J. - NWFSC SDM Applications · 2015. 5. 4. · river flows are reduced (primarily summer and fall)....
Transcript of J. - NWFSC SDM Applications · 2015. 5. 4. · river flows are reduced (primarily summer and fall)....
BENTHIC SAMPLING IN CATHLAMET BAY
OREGON -- 1984
by
Robert L Emmett George T McCabe Jr
Travis C Coley Robert J McConnell
and William D Muir
Report of Research
Financed by
U S Army Corps of Engineers (Contract DACW57-84-F-0348)
and
Coastal Zone and Estuarine Studies Northwest and Alaska Fisheries Center
National Marine Fisheries Service National Oceanic and Atmospheric Administration
2725 Montlake Boulevard East Seattle Washington 98112
October 1986
Table of Contents
Page
INTRODUCTION bullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbull 1
METHODS bullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbull 1
RESULTS bullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbull 7
DISCUSSION bullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbull 7
ACKNOWLEDGMENTS bullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbull 10
LITERATURE CITED bullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbull 10
APPENDIX A--Descriptive summary of benthic invertebrate data
collected in Cathlamet Bay Oregon during March through
September 1984
APPENDIX B--Sediment particle size and organic content of the
Cathlamet Bay benthic invertebrate sites during March
through September 1984
INTRODUCTION
Interest has been shown in the possibility of a deep draft navigational
channel from the mouth of the Col umbia River to either Astoria or Tongue
Point Oregon However deepening the channel may increase the amount and
the duration of saltwater intrusions into Cathlamet Bay Cathlamet Bay is
presently a freshwater embayment saline water only enters the bay when
river flows are reduced (primarily summer and fall)
Cathlamet Bay supports large populations of invertebrates including
the gammarid amphipod Corophium salmonis an important food for many fish
species in the estuary (McCabe et al 1983) Many fishes including
juvenile salmonids feed in Cathlamet Bay It is possible that alterations
of salinity regimes in Cathlamet Bay due to channel deepening would reduce
Corophium and other invertebrate populations subsequently adversely
affecting the use of the bay by feeding fishes
In 1984 the Portland District of the Us Army Corps of Engineers
contracted with the National Marine Fisheries Service in a cooperative
effort to provide additional biological information on the existing benthic
invertebrate and fish communities in Cathlamet Bay The research findings
pertaining to the benthic invertebrate data are being presented in this data
report the fish data are presented in a separate report
METHODS
Thirteen benthic sampling surveys were conducted at approximately 2shy
week interval s from 13 March through 14 September 1984 Initial benthic
invertebrate and sediment samples were collected at Stations 18 48 54 and
57 (Fig 1 Table 1) Due to extremely low benthic invertebrate densities
at Stations 48 54 and 57 these stations were replaced with nearby
1
58 amp
c ~
lt ~ 57 57 - +$ ampmiddotJ~EE~L
IS Yamp1 sf~18 l) bull bull t - amp ~ ~~
$+ ~BAYCATHLAMET
~~
OREGON
1N
5 o KM
~GRAYS BAY WASHINGTONcgt
~ ~
amp - Core sampler
$ - Purse seine +- Trawl
I ) o MI
N
Figure l--Locations and station numbers of fish and invertebrate sampling sites in
Cathlamet Bay
Table 1--Geographic locations of the benthic sampling stations in
Cathlamet Bay
Geographic location Station (Latitude and Longitude) Site Description
18 46 1234 N 123 4252 W Adjacent to Green Dolphin 3 at Wend of North Channel
45 46 1128 N 123 4414 W Center of old Marishytime Basin 600 m N of Corps of Enginshyeers dock
48a 46 1053 N 123 4409 W Adjacent to Can 7 off SW end of Lois Island in South Channel
46 1053 N 123 38 41 W Adj acent to Svensen Island piling jetty W of Red Dolphin 12A
55 46 11 17 N 123 3800 W Adjacent to Red Dolphin 14 at SW end of Minaker Island
46 1300 N 123 3809 W 50 m N of Seal Island in Woody Island Channel
58 46 1354 N 123 4010 W Adjacent to Can 5 in Woody Island Channel [after can was moved (18 July) approxshyimately 300 m Wof can]
a Stations which were replaced during Survey 3
3
stations known to have higher densities --45 55 and 58 respectively
after Survey 2 Higher benthic invertebrate densities would provide better
statistically identifiable relationships between densities and salinity As
a result of the changes in sampling stations only samples from Station 18
were analyzed for Survey 2 (5 April 1984)
Benthic samples were collected by SCUBA divers using a coring device
The sampler was constructed of 385-cm (inside diameter) PVC pipe which
penetrated 15 cm into the sediment thereby collecting a 924 cm3 sediment
sample (Fig 2) The coring device was operated as follows 1) the sampler
was filled with water on the boat to aid in diver descent 2) on the bottom
the diver removed the bottom cap and pushed the sampler into the sediment
until it stopped at the plexiglass plate (15 cm) and 3) the diver placed
his thumb on the top opening (forming a suction) removed the coring device
from the sediment and replaced the bottom cap All samples were taken
within the confines of a square meter aluminum irame
On the boat samples were washed through a 025-mm mesh screen placed
into labeled jars and fixed and preserved in a 4 formaldehyde solution
that contained rose bengal (a protein stain) At the laboratory samples
were washed of the formaldehyde sol ution and sorted with the aid of a 15X
dissecting microscope Invertebrates were identified to the lowest
practical taxon and counted
Initially 16 benthic cores were taken 15 to be used for benthic
invertebrate analysis and 1 for sediment analysis Subsequent statistical
analysis revealed 10 benthic invertebrate cores were sufficient to
adequately describe the benthic communities So after Survey 4
(1 August 1984) 11 benthic cores were collected per station
4
Opening
Top cap
Plexiglass disc c====tt====tt===J
PVC tubing
Bottom cap
1Scm String
Figure 2--Description of PVC benthic invertebrate sampling device
5
Station number date depth bottom salinity and temperature (taken
with a Beckman RS5-3 salinometer and probe1) sample size total numbers
frequency of occurrence and mean number 1m2 are presented in the Results
Besides the above H Shannon-Weaver diversity function (Shannon and Weaver
1963) SD Simpson diversity value (Simpson 1949) SR species richness
(Margalef 1958) and J species evenness value (Pielou 1966) were
calculated The following formulas were used s
1) H= - L Pi 10g2 Pii=1
where Pi= the proportion of individuals belonging to the ith
species
S = number of species s
2) SD= 1 - L Pi2 i=1
where Pi= the proporti on of individual s be longing to the i I th
species
3) SR= (S - l)loge N
where S= the number of species at the station
N= the total number of individuals at the station
4) J= H Ilog2 S
where H= the Shannon-Weaver diversity value
S = the number of species
Sediments were analyzed by seiving those particles lt 00625 mm were
considered the silt-clay fraction Organic content was determined by
burning at 550degC for 24 h
II Reference to trade names does not imply endorsement by National Marine Fisheries Service NOAA
6
RESULTS
Physical and biological data are presented by station in Appendix A A
list of the benthic invertebrate taxa identified during the survey are
presented in Table 1 Appendix B presents the sediment analysis
DISCUSSION
Although the purpose of this study was to obtain base line information
prior to modification of the ship navigational channel caution must be used
in interpreting the data First the MOBILOIL oil spill on 19 March 1984
may have affected the local benthic invertebrate biota Oil started to
occur in the benthic samples on the third survey (18 April 1984) and
continued until the end of the study (14 September 1984) Al though some
stations had more oil than others effects on the invertebrates were not
obvious Secondly year to year variations in benthic invertebrate species
and densities occur in the marine environment (Gray and Christie 1983)
Whether the benthic infauna in Cathlamet Bay varies cyclically is unknown
The long term stability or cycles need to be determined before changes of
the benthic infauna can be attributed to any habitat modification or
dredging proj ect
Salinity is considered to be the most important factor controlling the
distribution of estuarine animals (Kinne 1966) Since we performed our data
collections primarily at low tide the given salinity values must be
considered low values Chapman and Brinkhurst (1981) showed that seasonal
variations of benthic invertebrates in the Fraser River estuary were
correl ated with salini ty One common freshwater oligochaete species in
their study Limnodrilus hoffmeisteri also occurs in Cathlamet Bay Adult
hoffmeisteri can tolerate salinities up to 10 ppt and immatures 14 to
7
Table 1--List of invertebrate taxa found at benthic invertebrate sites
located in Cathlamet Bay Oregon March through September 1984
Coelenterata Hydra sp
Turbellaria Nemertea Nematoda Nematomorpha Oligochaeta
Vejdovskyella intermedia Limnodrilus hoffmeisteri Ilydrilus frantzi
Polychaeta Neanthes limnicola Hobsonia florida Manyunkia speciosa
Gastropoda Lithoglyphys (=Fluminicola)
Bivalvia virens
Corbicula manilensis Ostracoda
Limnocythera sp Mysidacea
Neomysis mercedis Cumacea Amphipoda
Eogammarus spp Eogammarus confervicolus Corophium salmonis Corophium spinicorne Pontoporeia hoyi Eohaustorius estuaris
Isopoda Saduria entomon
Harpacticoida Scottolana canadensis
Insecta Diptera adult Diptera pupae Heleidae larvae Chironomidae larvae Chironomidae pupae Trichoptera larvae Hymenoptera Collembola
Hydracarina
Occurrence not quantified
8
15 ppt (Chapman and Brinkhurst 1980) This species appears to be a useful
salinity indicator and future benthic work should identify and enumerate
this species Due to time and taxonomic expertise requirements only the
oligochaete species Vejdovskyella intermedia was enumerated Salinity
tolerances of this species are unknown
Since intersti tial salinities do not vary dielly as do salini ties in
the water column (Sanders et al 1965) interstitial salinities should have
been measured Al though many infauna species may be exposed to overlying
water because of activity andor tubes (exCorophium spp) many benthic
invertebrates are dependent on interstitial salinity levels Measurements
of interstitial salinities are necesssary to determine benthic infauna
sensitivity to salinity intrusion
Finally there appeared to be a large amount of within station
variability in the sediment texture particularly at Stations 55 and 58
The sediment at Station 55 ranged from a very fine sand to almost all clay
The sediment texture variability at Station 58 was a result of the uS
Coast Guard moving Can 5 to a new location forcing us to estimate the
previous location of our station
ACKNOWLEDGMENTS
We wish to thank Maurice Laird Nick Zorich Larry Davis Roy Pettit
Edward Koller and David Miller for their assistance in developing the
sampling device and collecting the samples We express special thanks to
Sandy Lipovsky Thomas Moylan and Susan Newhouse for helping sort and
identify the invertebrates
9
LITERATURE CITED
Chapman P M and R O Brinkhurst
1980 Salinity tolerance of some selected aquatic oligochaetes Internat
Rev der Gesamten Hydrobio1gie 65499-505
Chapman P M and R O Brinkhurst
1981 Seasonal changes in interstitial salinities and seasonal movements
of subtidal benthic invertebrates in the Fraser River estuary BC Est
Coast Shelf Sci 1249-66
Gray J S and H Christie
1983 Predicting long-term changes in marine benthic communities Mar
Ecol Prog Sere 1387-94
Kinne O
1966 Physiological aspects of animal life in estuaries with special
reference to salinity Neth J of Sea Res 3 227-244
Margalef R
1958 Information theory in ecology Gen Syst 336-71
McCabe G T Jr W D Muir R L Emmett and J T Durkin
1983 Interrelationships between juvenile sa1monids and nonsalmonid fish
in thl Columbia River estuary Fish Bu11U S 81(4)815-826
Pie10u E L
1966 The measurement of diversity in different types of biological
collections J Theor BioI 13131-144
Sanders H L P C Mange1sdorf and G R Hampson
1965 Salinity and faunal distribution in the Pocasset River
Massachusetts Limno Ocean 10216-229
Shannon L E and W Weaver
1963 The mathematical theory of communication Univ of Illinois Press
Urbana Ill
10
Simpson E H
1949 Measurement of diversity Nature 163688
11
APPENDIX A--Descriptive summary of benthic invertebrate data collected in
Cathlamet Bay Oregon during March through September 1984
STATION 18 Date 13 March 1984 Depth 46 m Salinity (bottom) 11 ppt Temperature (bottom) 67 C No of samples 15
Frequency Density (nom 2 ) Total occurrence
Taxa number (7) X SD
Nemertea 2 67 1145 4434 Nematoda 134 1000 76702 33169 Turbellaria 22 667 12593 15854 ~~n~b~~ imnpoundQ 31 Oligochaeta 486
933 17744 1468 1 100() 278186 138779
~QtQif~12 mnil~nsectisect 24 Ostracoda 39
933 13738 8462 800 22324 17715
~Q[QQbiYm ~lmQni~ 74 867 42358 38B70 EQntQIH~i2 Qyi 1 EQri gnQQn 1 Harpacticoida 7
67 572 2217 67 572 221 7
333 4007 7159 Insecta 2 67 1145 4434 Chironomid larvae 20 667 1144 B 10090 Collembola 95 867 54378 82588 Hydracarina 1 67 572 221 7
Mean number of organismssample 626 Standard deviation 19 1
M ean num b er 0 f 2organIsms III 537484 Standard deviation 163579
H= 237 so= 069 SR= 1 42 J= 061
A-l
STATION 48 Date 13 March 1984 Depth 107 m Salinity (bottom) 05 ppt Temperature (bottom) bB C No of sampl es 15
Frequency Densi ty (nom 2 ) Total occurrence
Taxa number (7) X SD
Nemertea 31 6b7 17744 1849 1 Nematoda 38 667 21751 22685 Oligochaeta 4 133 2290 6859 ~QQpound12 2nil~nsectisect 31 Ostracoda 1
667 17744 29648 67 572 221 7
~Q9~~[~ spp 1 ~Q[Q2l ~~lQnisect 1 ~Q2sectiQisect sectisect 4 Harpacticoida 1
67 572 2217 67 572 221 7
200 2290 5097 67 572 221 7
Insecta 2 133 1145 3021 Diptera adult 1 67 572 2217 Collembola 24 467 13738 30923
Mean number of organismssample 93 Standard deviation 59
Mean number of organismsm2 795b4 Standard deviation 50740
H= 255 SD= 079 SR= 1 55 J= 071
A-2
STATION 54 Date 14 March 1984 Depth 177 m Salinity (bottom) 00 ppt Temperature (bottom) 66 C No of samples 15
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nemertea 47 1000 26903 14096 Nematoda 7 267 4007 9102 Turbellaria 9 333 5152 1114B Oligochaeta 11 333 6296 10989 Gastropoda 1 67 572 2217 ~Q(Qi~Yl mnil~n2i~ Ostracoda
199 3
1000 200
11390B 171 7
97165 3555
gQ[Qehiy sectlmQnisect Harpacticoida
3 1
200 67
171 7 572
3555 221 7
Heleidae larvae 29 867 16600 10989 Chironomid larvae 2 133 1145 3021 Collembola 2 67 1145 4434
Mean number of organismssample 209 Standard deviation 103
2Mean number 0 f organIsms m 179734 Standard deviation 88247
H = 1 86 SD= 056 SR= 1 33 J= 052
A-3
STATION 57 Date 13 March 1984 Depth 91 m Salinity (bottom) 00 ppt Temperature (bottom) 63 C No of sampl es 15
Frequency Densi ty (no 81 2) Total occurrence
Taxa number (X) X SD
Nemertea 27 667 15455 13459 Nematoda 8 400 4579 6381 Turbellaria 4 200 2290 5097 Oligochaeta 8 400 4579 6381 ~g[gipound~l mnilui Ostracoda
1 1
67 67
572 572
2217 2217
~Qgml[a spp 1 67 572 2217 ~Q[Qeni~m lmQnisect Harpacticoida
2 1
133 67
1145 572
3021 221 7
Insecta 3 67 171 7 b651 Chironomid larvae 1 b7 572 221 7 Collembola 37 400 21179 65700 Hydracarina 1 67 572 221 7
Mean number of organismssample 63 Standard deviation 82
Mean number of organismsm2 54378 Standard deviation 70029
H= 253 SD= 075 SR= 1 83 J= 068
A-4
STATION 18 Date 5 April 1984 Depth 30 II
Salinity (bottoll) 00 ppt Temperature (bottom) 90 C No of samples 15
Frequency Densi ty (no1I 2) Total occurrence
Taxa number (i ) If S D
Nemertea 11 bOO 6296 6042 Nematomorpha 2 133 1145 3021 Nuatoda 119 1000 6811 6 50947 Turbellaria 20 600 11448 13640 ~~~nin~sect liIDni~Q12 Oligochaeta
33 481
1000 1000
18889 275324
10364 142326
~Q~Qi~Yl m2nil~ni2 23 600 13165 1371 7 Ostracoda 33 933 18889 10861 gQ(QQrriYID sect2mQnisectHarpacti coi da
38 7
933 133
21751 4007
13329 13328
Chironomid larvae 16 667 9158 8868 ColI embola 1 67 572 2217
Mean number of organismssample 523 Standard deviation 227
M b f 2ean num er 0 organIsms m 448762 Standard deviation 194508
H= 202 SD= 059 SR= 114 J= 0S6
A-5
STATION 45 Date 18 April 1984 Depth 64 III
Salinity (bottom) 00 ppt Temperature (bottom) 95 C No of samples 15
Total Frequency occurrence
Density (noI 2 )
Taxa number (X) X SD
Nematoda 171 1000 97890 92277 tyg~ sp Turbellaria
1 29
67 600
572 16600
221 7 23506
H~nng~ imDi~g tQQsectQl fg~ig Oligochaeta ~Q[Qi~Y2 m2niD~i Ostracodamiddot
9 41
367 42
100
400 1000 1000 800
1000
5152 23469
210071 24041 57240
781 5 13563
100542 19254 43134
~Q[Qeniym amQnisectHarpacticoida Heleidae larvae
37 2049
1
933 1000
67
21179 117284B
572
189B5 616612
221 7 Chironomid larvae 3 200 171 7 3555 Collembola 1 67 572 221 7 Insect parts 1 67 572 221 7
Mean number of organismssample 1901 Standard deviation 864
b f 2nean num er 0 organIsms m 1632485 Standard deviation 741931
H = 1 52 SD= 046 SR= 1 13 J= 040
A-6
STATION 18 Date 18 April 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom) No of samples 15
Frequency Density (nom2) Total occurrence
Taxa nueber (X) x s D
Nemertea 13 533 7441 9663 Nematomorpha 3 200 171 7 3555 Nematoda 195 1000 111618 63675 Turbell ari a 9 467 5152 6326 ~~ni~~ i~ni~Ql~ 30 867 17172 129B1 Oligochaeta 580 1000 331992 108880 ~QC~i~Ml~ m~nil~n~isectOstracoda
28 18
1000 667
16027 10303
11179 10364
~Q[Q~~iYm sect~Qni2 sect~ci~ gniQQnHarpacticoida
105 1
17
1000 67
400
60102 572
9731
25553 2217
19970 Chironollid larvae 16 667 9158 8B6B
Hean number of organismssample 677 Standard deviation 199
M ean num b I 2er 0 f organIsms AI 580986 Standard deviation 171095
w = 202 SD= 062 SR= 1 10 J= 056
95 C
A-7
STATION 58 Date 18 April 1984 Depth 67 m Salinity (bottom) 00 ppt Temperature (botto) No of samples 15
Frequency Density (nom2) Total occurrence
Taxa number (~) X SD
Nemertea 62 933 35489 26338 Nematoda 224 1000 128218 49903 Turbellaria 9 600 5152 4354 ~nt~sect imni~Q Oligochaeta
1 79
67 1000
572 45220
2217 23506
bnQgYRhY~ Yi~~nE ~Q(~i~Y nil~ni Ostracoda
2 10 19
67 533 600
1145 5724
10876
4434 6214
10989 ~Q[QeniY sectQOiHarpacticoida
30 2
B67 133
17172 1145
12142 3021
Heleidae larvae 6 333 3434 5430 Chironomid larvae 9 400 5152 7B1 5 Chironomid pupae 2 133 1145 3021
Mean number of organismssample 303 Standard deviation 94
I 11 ean num ber 0 f organlsms 2 260442 Standard deviation 81043
H= 233 SO= 070 SR= 1 36 J= 063
97 C
A-B
Frequency Density (nolm 2) Total occurrence -----------------
Taxa number (7) X SD
Nemertea 16 467 9158 10989 Nematoda 266 1000 152258 54541 Turbellaria 23 600 13165 15518 ~l~nH ~Q~iQH 2 133 1145 3021 Oligochaeta 181 1000 103604 56532 bi~hQg~Qn~~ ~it~l~ ~QtQifg mli~lsectisectOstracoda
3 59 15
200 1000 733
1717 33772 8586
3555 23054
7256 ~Q[QQhiY HmQtlsect ~Q[QehiYm sect21tlfQ[lg EQlQQQt~i hQ~i
466 3 1
1000 200 67
266738 171 7 572
75094 3555 221 7
Harpacticoida 30 400 17172 40402 Chironomid larvae 10 533 5724 6214
Mean number of organismssa_pIe 717 Standard deviation 143
I 2Mean number 0 f organlsms m 615330 Standard deviation 122532
H= 226 SO= 072 SR= 119 J= 061
STATION 55 Date 18 April 1984 Depth 30 1ft
Salinity (bottom) 00 ppt Temperature (bottom) 93 C No of SaIIples 15
A-9
STATION 45 Date 4 Hay 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 103 C No of samples 10
Frequency Density (noI2) Total occurrence ---------------- shy
Taxa number (Xl X SD
Neutoda 269 1000 230963 167296 Turbellaria 1 100 859 2715 ~u~yuti Q~iQ ~Ub imni~Q
1 2
100 100
859 171 7
2715 5430
j2~Qn flec Oligochaeta
28 169
BOO 1000
24041 145103
19326 74351
~igeYk~ll iulCIDai ~Q(Qi~Y uini Ostracoda
32 4 5
aoo 400
400
27475 3434 4293
22463 4434 6071
biQQ~~tbt sp ~e(QQbYm mQoi sectampQeD ~nQDisect Chironomid larvae
25 2
578 2
900 200
1000 200
21465 1717
496271 171 7
15279 3620
293820 3620
Mean number of organismssample 111 8 Standard deviation 522
11 b f I 2ean num er 0 organIsms m 95991 5 Standard deviation 447842
H= 193 SD= 065 SR= 118 J= 052
A-10
STATION 18 Date 4 Hay 1984 Depth 34 II
Salinity (bottom) 00 ppt Temperature (bottom) 104 C No of saMples 10
Frequency Density (noI 2 ) occurrence ----------------shy
Taxa (X) X SD
Nemertea 10 600 8SB6 10709 Nuatoda 153 1000 131366 47899 Turbellaria 8 600 6869 6773 ~n1b limnpoundQl Oligochaeta
11 147
700 1000
middot9445 126214
9449 6231 7
~i~g~kXl in1(m~i ~g(2iY OiOi Ostracoda
86 4 1
900 300 100
73840 3434 859
61543 6003 2715
bimoQpoundx1b( sp ~2(QQbiYm mgoiDi ptera adult
3 57
3
300 900 300
2576 48940
2576
4147 21815 4147
Chironomid larvae 4 300 3434 6003 Chironomid pupae 1 100 859 2715
Hean nUMber of orQanismssample 489 Standard deviation 160
b f 2nean nUll er 0 organIsms II 418997 Standard deviation 137721
H= 243 SD= 076 SR= 1 34 J= 066
A-l1
STATION 5B Date 4 Hay 1984 Depth 61 bull Salinity (botto~) 00 ppt Temperature (bottom) 110 C No of suples 10
Frequency Density (nom 2) Total occurrence ---------------- shy
Taxa number (X) X SD
Neertn 41 1000 35203 21206 Nematoda 211 1000 181165 53305 Turbellaria 4 200 3434 7240 Oligochaeta 89 1000 76415 32240 ~i~2~~~11~ iU1(~i~bi1begygny YitQ ~e(biYl ~OiDi OstracDda
4 3
20 1
400 200 BOO 100
3434 2576
17172 859
4434 5795
19829 2715
biue~1bt~ sp ~2(egniY Imeoi sectg11g1O OdD Helei dae larvae
5 32
1 1
400 900 100 100
4293 27475
859 859
6071 18010 2715 2715
Chironomid larvae 7 400 6010 9096
Mean number of organismssample 419 Standard deviation 93
b f 2ean nUll er 0 organIsms m 359753 Standard deviation 79875
H= 221 SD= 068 SR= 138 J= 060
A-12
Frequency Density (nolm 2) occurrence -----------------
Taxa (X) X SD
Nemertea 23 900 1974S 15171 Neutollorpha 1 100 859 271 5 Nellatoda 269 1000 230963 69923 Turbellaria 10 600 8586 991 4 ~~xYnki Q~ampiQ 4 300 3434 6003 ~nb limnipoundQl Oligochaeta
1 79
100 1000
859 67829
2715 40363
~i~Q~kXl io[~i biDe9XQDX ~i[~OBi valvi a
11 3 1
800 300 100
9445 2576 859
6335 4147 271 5
~Q[~poundY mnil~n bimoQampXD[ sp ~Q[QabiY lQO Harpacticoida
18 2
159 1
700 200
1000 100
15455 171 7
135659 859
13904 3620
54272 2715
Chironomid larvae 2 200 171 7 3620 Trichoptera larvae 1 100 859 2715
STATION 55 Date 4 May 1984 Depth 21 m Salinity (bottom) 00 ppt Temperature (bottom) 107 C No of suples 10
Mean number of organismssamples 594 Standard deviation 147
Mean number of organismsm2 501422 Standard deviation 126525
H= 219 aD= 069 SR= 1 63 J= 055
A-13
STATION 45 Date 17 May 1984 Depth 61 m Sal i ni ty (bottom) 01 ppt Temperature (bottom) 121 C No of sampl es 10
Frequency Total occurrence
Taxa nUlllber (7)
NelDertea 1 100 859 2715 Nematoda 163 1000 139952 127996 Polychaeta 1 100 859 2715 ~~~n~h~ imni~Qs Hobsonia florida
2 6
200 600
171 7 5152
3620 4434
Oligochaeta 329 1000 282479 13291 8 ~~lQQYsectk~~12 in~~rmQi 57 900 48940 33142 ~Qr~ipound~2 ffi2niDi 6 500 5152 6003 Ostracoda 5 200 4293 10898 bimDg~yth( SPa 13 600 11162 12176 ~Q(Qebi~m sectQDisect Harpacticaida
2 2
200 100
1717 1717
3620 5430
2poundQttQD poundDQDsectisectDiptera adult
296 1
1000 100
254146 859
172633 271 5
Mean number of organismssample 884 Standard deviation 326
b f I 2nean num er 0 organlss m 759002 Standard deviation 280131
H= 209 SD= 071 SR= 1 33 J= 055
A-14
STATION 18 Date 17 May 1984 Depth 30 m Salinity (bottom) 00 ppt Temperature (bottom) 122 C No of samples 12
Frequency Density (nom2) Total occurrence -----------------
Taxa number (X) X SD
Nematoda 50 833 35775 22815 ~ntb limnipoundQl 3 Oligochaeta 97
250 833
2147 69404
3883 48495
~igQ~~k~ intr~ 27 ~QrQipoundY mnin~i~ 5
667 333
19319 3S7S
19068 5740
Ostracoda 1 83 716 2479 bimnQpound~nr sp 5 ~Q(Q~bY ~mQni S4 ~Q(Q~niY ~QinipoundQ(n 3
333 833 250
3578 60102
2147
5740 43780 3883
fgnQ2Q(i bQ~i 1 sectpoundQtgO poundnQn~i 2 Chironomid larvae 4
83 167 250
716 1431 2862
2479 3342 5592
Mean number of organismssample 235 Standard deviation 116
nean nURl b er 0 f organlslls II 2 201771 Standard devi ati on 99221
H= 236 SD= 075 SR= 1 35 J= 066
A-15
STATION 58 Date 17 May 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) 123 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nemertea 2 100 171 7 5430 Nematoda 75 1000 64395 34404 ~~2Qih~a limQi~Q 2 200 171 7 3620 Oligochaeta 60 1000 51516 33376 ~~igQY~~~12 iQ~[~~gi 2 200 171 7 3620 bitQQ9~Bh~sect Yr~Qsect 3 200 2576 579~
gQ[Qi~Yl ID2Dil~nsectisect Ostracoda
6 6
500 400
5152 5152
6003 8295
binQ~~nr[ sp gg[QQOYm mQQsect sect~QttQn 5n2Q~nsectia Chironomid larvae
2 34
1 1
200 1000
100 100
171 7 29192
859 859
3620 12927 271 5 2715
Mean number of organismssample 194 Standard deviation
2Mean nurn ber 0 f organIsms fA 166568 Standard deviation 56259
H= 225 SD= 072 SR= 1 45 J= 063
A-16
66
STATION 55 Date 17 May 1984 Depth 24 II
Salinity (bottom) 00 ppt Telllperature (bottom) 126 C No of samples 10
Total Frequency occurrence
Taxa nUllber (X) X SD --------------------------------------------------------------~-----------
Nematollorpha 2 200 171 7 3620 Nematoda 63 1000 54092 35297 Oligochaeta 94 1000 80708 44004 ~~iQQY~k~~l iQt~(m~Qi bitnQg~Qh~~ Yi[~Q gQ[QipoundY~ mni~Q~i Ostracoda
10 9 4 2
600 800 300 100
8586 7727 3434 171 7
9050 4874 6003 5430
bimnQ~~ln~[e sp ~Q(QQbiYm mQD ~Q[QQbiYm 2inipoundQ[n~ Chironomid larvae
6 142
3 1
600 1000 200 100
5152 121921
2576 859
4434 50682 5795 2715
Mean number of organismssample 336 Standard deviation 62
2Mean num ber 0 f organisms m 288490 Standard deviation 53421
H= 214 SD= 071 SR= 119 J= 062
A-17
STATION 45 Date 1 June 1984 Depth 61 m Salinity (bottom) 01 ppt Temperature (bottom) 139 C No of samples 10
Total Frequency occurrence
Density (no2)
Taxa nUllber (1) X SD
Nematoda 174 900 149396 132347 Turbellaria 5 200 4293 10898 ~~~QiQ~sect tmQtpoundQ~ ~QQsectQ flQi~sect Oligochaeta ~~iQQysecttygl~ iQl~rm~~i2 ~Q[Qi~~l~ ~~DilgDsectisect Ostracoda
5 20
190 103
12 5
400 900
1000 900
60 (I 400
4293 17172
163134 88436 10303 4293
6071 8095
92563 51524 11304 6071
bimnQpoundytng[ sp ~gQmYsectisect IDg[pound~Qisect ~Q[QQhi~m sectlmQDisect sectpoundQtiQlsectQ pound~Qgsectisect ChironQmid larvae
33 1
10 375
2
900 100 700
1000 200
28334 859
8586 321975
171 7
17196 2715 7010
179201 3620
Mean number of organismssample 935 Standard deviation 254
nurn b 0 f 2lean er organlsms m 802791 Standard deviation 218423
H= 239 SD= 075 SR= 1 22 J= 065
A-18
STATION 18 Date 1 June 1984 Depth 30 AI
Salinity (bottom) 00 ppt Temperature (bottom) 134 C No of samples 11
Frequency Density (no 1m2)
Taxa Total number
occurrence (X)
---------------- shyX SD
Turbellaria 14 636 10928 1157 7 ~~~Qltlg~ ilipoundQ~ Oligochaeta
10 178
727 1000
7805 138937
601 6 67913
~~iQQy~tY~l~ ill~[m~Qi~ 122 636 95227 93619 ~Q[Qipound~ l~i~lsectisect Ostracoda
7 1
455 9 1
5464 78 1
6946 2589
billQylhg[ Spa 16 818 12489 10420 GQ[QQQil HQi~ 139 1000 108496 70934 gQ[Qebi secteiifQ[~ sectQiiQi2 ~Q~sectisect Diptera pupae
1 2 1
9 1 182
11 1
781 1561 781
2589 3473 2589
Chironomid larvae 2 182 1561 3473
Mean number of organismssample 714 Standard deviation 284
nean num b er 0 f organlsms m 2 612728 Standard deviation 244249
H= 232 SD= 075 SR= 1 25 J= 063
A-19
STATION 58 Date 1 June 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 138 C No of samples 10
Frequency Density (noI 2 ) Total occurrence
Taxa number (X) X SD
Nematoda 173 1000 148538 47383 Turbellaria 3 300 2576 4147 Oligochaeta 53 1000 45506 32139 ~giQgY2k~g~ ini~[m~Qi~ bQg91YehY2 Yi[~nsect ~Qr~i~Yl m~nl~n~i
26 1
10
600 100 500
22324 859
8586
3391 2 2715
13424 bimnQpound~Q~[ sp ~Q9~m[Y poundgnitYpoundQlysect ~QtQehiYm ~lQni
4 1
46
200 100
1000
3434 859
39496
8295 2715
22243 Chironomid larvae 1 100 859 271 5
Mean number of organismssample 318 standard deviation 103
M b f I 2ean num er 0 organlsms III 273035 Standard deviation 88842
H = 1 99 SD= 065 SR= 1 08 J= 060
A-20
STATION 55 Date 1 June 1984 Depth 27 m Salinity (bottom) 00 ppt Temp era t u r e (b 0 t tom) 140 C No of samples 10
Frequency Density (nom 2 ) Total occurrence
Taxa nueber (X) X SD
Nematoda 157 1000 134800 69524 Turbellaria 9 400 7727 13696 tlHl~lk ~2~~iQH 1 100 859 2715 Oligochaeta 49 1000 42071 32745 ~~iQQysect~gl~ S[l9sect bHbQghQb~~ Yirl~
10 1
400 100
8586 859
12799 2715
tQ[Qpoundls l2lilUsect bilQHSbg[ sp ~QrQQbil nllQisectHarpacticoida
4 7
134 1
400 500
1000 100
3434 6010
115052 859
4434 7069
44742 271 5
sectpoundQUQlls poundsQgn~sect Chironomid larvae
1 1
100 100
859 859
271 5 2715
Hydracarina 1 100 859 2715
Hean number of organismssample 376 Standard deviation 132
M b f 2ean num er 0 organIsms m 322834 Standard deviation 113127
H= 202 SD= 068 SR= 1 40 J= 055
A-21
STATION 45 Date 18 June 1984 Depth 67 m Salinity (bottom) 01 ppt Temperature (bottom) 149 C No of samples 10
Frequency Density (nom2)
Taxa Total nUllber
occurrence ex) i SD
Nematoda 109 1000 93587 3891 7 Turbell ari a 3 200 2576 5795 ~g~tbg limoipoundQl Q~Qni2 fQ(i~2 Oligochaeta ~gigQ~~Y inl[ggi ~Q[QiSY2 moilo Ostracoda
3 2
194 44
7 3
200 200
1000 1000 200 200
2576 171 7
16656B 37778 6010 2576
5795 3620
118364 36020 12831 5795
bimoQampl~n~[2 sp ~Q[QQbiYm lmgoi Harpacticoida sectpoundQQ1202 pound2022Osect Chironomid larvae
68 1 1
113 2
900 100 100
1000 200
58385 859 859
97022 171 7
97627 2715 2715
73976 3620
Mean number of organismssa_pie 550 Standard deviation 371
Mean nUll ber 0 f organIsms 2II 472230 Standard deviation 318519
H= 242 SD= 077 SR= 1 32 Ja 065
A-22
STATION 18 Date 18 June 1984 Depth 34 m Salinity (bottom) 00 ppt Temperature (bottom) 155 C No of samples 10
Frequency Density (nom 2) Total occurrence ----------------shy
Taxa nUlber (Z) X SD
Neutoda 291 1000 249853 138826 Turbellaria 1 100 859 2715 ~~n~~nki~ sectQ~~iQ~2 ~g~ntbg2 limni~Q9 Oligochaeta
1 3
123
100 300
1000
859 2576
105608
271 5 4147
48240 ~~igQY~~~~9 int~(mgii ~Q[~i~~~ mini~ni bimnQ~ylbg(~ Spa
67 6 5
1000 500 400
57526 5152 4293
40485 6003 6071
~Q(QebiYm ~imQnisect Harpacticoida
80 2
1000 200
68688 171 7
41276 3620
sect~QttQini ~2nig~n~i Chironomid larvae
2 4
200 300
171 7 3434
3620 6003
Mean number of organismssample 585 Standard deviation 194
I 2Mean urn b er 0 f organIsms m 502281 Standard deviation 166943
H= 203 SD= 068 SR= 1 20 J= 057
A-23
STATI ON 58 Date 18 June 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (noI 2) Total occurrence
TaKa number (X) X SD
Nellertea 2 100 1717 5430 Nematoda 160 1000 137376 6361 1 Turbellaria 4 400 3434 4434 Oligochaeta 36 1000 3091 0 14705 ~iQQYik~ Q1rQ 4 300 3434 6003 bitnQgl~ebysect YrDsect ~Q[QiY~ ~~nni biQQpoundY1h[ sp ~Q[Qeng ~ilQD Chironomid larvae
3 1 3
61 1
300 100 300
1000 100
2576 859
2576 52375
859
4147 2715 4147
1428 1 2715
Chironollid pupae 1 100 859 271 5
Mean number of organismssample 276 standard deviation 72
nean nurn b er 0 f organIsms I 2 236974 Standard deviation 61410
H = 1 78 SD= 060 SR= 1 23 J= 051
A-24
STATION 55 Date 18 June 1984 Depth 18 m Salinity (bottom)1 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (no 1m2) occurrence
Taxa (X) X SD
Nematoda 160 1000 137376 43967 Turbellaria 1 100 859 271 5 Oligochaeta 61 1000 52375 31985 ~~iQQY~kY~~ int~[mQi~ ~Q[Qipound~l~ m~nini~ biIDnQ~Ylb[s sp
3 3 3
300 300 300
2576 2576 2576
4147 4147 4147
~Q[Q~bi~ ~slIDQni~ Chironomid larvae
85 6
1000 600
72981 5152
34165 4434
Mean number of organismssample 322 Standard deviation 75
2Mean number 0 f organIsms m 276469 Standard deviation 64099
H= 178 5D= 065 SR= 0B4 J= 059
A-25
Frequency Density (no2) occurrence -----------------
Taxa (7) X SD
Nematoda 104 1000 89294 47409 Turbell ar i a 1 100 859 2715 ~~~nQ~sect imni~Q~ tjQQsectQlis flQig~ Oligochaeta
2 1
297
100 100
1000
171 7 859
255004
5430 271 5
146273 ~~i~QYsect~Y~lls ilr2is gQrQi~y~ IDDilDia
24 4
600 300
20606 3434
27212 6003
Ostracoda 2 200 171 7 3620 biDQSy~b~C~ sp M~QYsectisect m~r~~Qi ~QrQeniy QD Harpacticoida
157 1 1 1
900 100 100 100
134800 859 859 859
73197 2715 2715 2715
sectpoundQttQDs SsDQD 113 900 97022 61656
STATION 45 Date 2 July 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) No of samples 10
172 C
Mean number of organismssample 708 Standard deviation 339
M ean num b er f 20 organisms 607889 Standard deviation 290B22
H= 216 SD= 073 SR= 1 27 J= 058
1-26
STATION 18 Date 2 July 1984 Depth 24 WI
Sal inity (bottom) 00 ppt Temperature (bottom) 172 C No of samples 10
--------------------------------~-----------------------------------------Frequency Density (nom2)
Total occurrence Taxa number (7) X SD
Nematoda 202 1000 173437 113532 ~~~nih~sect mnpoundQ~ Oligochleta
4 102
400 1000
3434 87577
4434 54873
~~igQYsect~Y~12 inl~rmgi2 ~Q[~poundYl~ m~ni~nsectisect bimnQpoundylh~[~ Spa
115 4
15
900 300 900
98739 3434
12879
100720 6003 9274
~Q[QQniY~ sect~QDi~ 55 900 47223 40525 Harpacticoida 1 100 859 2715 sectpoundQiiQlD SDg~DEisect Chironomid larvae
2 6
200 400
1717 5152
3620 7240
Hymenoptera 1 100 859 2715 Hydracarina 1 100 859 2715
Mean number of organismssample 508 Standard deviation 253
2Mean num ber 0 f organIsms m 436169 Standard deviation 217580
H= 225 SD= 074 SR= 1 22 J= 063
A-27
STATION 58 Date 2 July 1984 Depth 58 1
Salinity (bottom) 00 ppt Temperature (bottom) IBO C No of samples 10
Frequency Density (no2) Total occurrence
Taxa number ltX) i SD
Nematoda 151 1000 129649 42729 Turbellaria 1 100 859 2715 01 i gochaeta 41 1000 35203 22698 ~~i~e~~~ int~~m~~ 3 200 2576 5795 btbQglYRhY~ Yir~n~ ~e~~ampy mni~niii bimQeamp~tb~ sp ~e~eQhiY ~mQni Chironomid larvae
1 4 2
68 1
100 300 200
1000 100
859 3434 171 7
58385 859
271 5 6003 3620
1557 1 2715
Mean number of organisassample 272 Standard deviation
I 2Mean num ber 0 f organIsms I 233539 Standard deviation 62546
H = 1 69 SD= 061 SR= 099 J= 053
A-28
73
STATION 55 Date 2 July 1984 Depth 15 III
Salinity (bottom) 00 ppt Temperature (bottom) 182 C No of samples 10
Frequency Density (nom2) occurrence
Taxa (X) X SD
Nematoda 184 1()00 157982 5264B Turbellaria 1 100 859 271 5 Oligochaeta ~~iQQ~sect~Y~ll~ n~[~~Qi~ bitnggYQDYsect Yi[~nsect ~QrQipoundM2 m2ni~nsectisect bimnQpoundYn~[2 sp ~QrQQhiM Qni Harpacticoida
91 2 1 B 2
96 2
1000 200 100 500 200
1000 200
78133 171 7 859
6869 171 7
82426 1111
26058 3620 271 5 1890 3620shy
25980 3620
ChirDnomid larvae 5 400 4293 6071 Chironolllid pupae 1 100 859 2715
Mean number of organismssample 393 Standard deviation 53
2t1ean nUllber Df organlsms III 337430 Standard deviatiDn 45080
H= 187 SD= 067 SR= 116 J= 054
A-29
STATION 45 Date 17 Jul y 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (X) X SD
Nematoda 215 1000 184599 45837 ~~n~b~~ imDipoundQ Qe~Qni fllHi2
3 1
300 100
2576 859
4147 2715
Oligochaeta 305 1000 261873 147955 ~~iQQY~k~ in~rm~2i ~Qr~ipoundYl IDniln~i~ Ostracoda
17 1 2
500 100 200
14590 859
171 7
22554 2715 3620
bmnQpound~ihr sp ~QCQQhiY ~lQD~
176 1
1000 100
151114 859
57125 2715
Harpacticoida 4 300 3434 6003 sectQ~~Qn poundnQnai~ Chironomid larvae
91 5
1000 400
78133 4293
61310 6071
Mean number of organismssample 821 Standard deviation 275
M b f 2ean num er 0 organlsms m 70491 1 Standard deviation 236369
H= 215 SD= 073 SR= 114 J= 060
A-30
STATION 18 Date 17 Jul y 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom 203 C No of samples 10
Frequency Density (001 2 Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 339 1000 291065 119140 Turbellaria 3 200 2576 5795 ~~2~b~~ limnipoundQ12Oligochaeta
4 18S
300 1000
3434 161417
6003 89393
~~iQQy~~~ls in~(ID~Qi bim~Qampy~bg(2 Spa
34 16
800 700
29192 1373B
22967 15252
~g(gebi~m ~21mQni2 Harpacticoida
52 3
1000 200
44647 2576
25212 5795
2ampQ11Q1202 ampS02Qg~2i2 Chironomid larvae
18 10
700 700
15455 8586
13904 701 0
Mean number of organi$mssample 667 Standard deviation IBB
H ean nurn b er 1 20 f organIsms m 572686 Standard deviation 161750
H = 1 99 SD= 065 SR= 090 J= 060
A-31
STATION 58 Date 17 July 1984 Depth 55 AI
Salinity (bottom) 00 ppt Temperature (bottom) 197 C No of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nellatoda 173 1000 14853B 66390 Turbellaria 1 100 859 271 5 ~~~n~hu ini~QA Oligochaeta
1 46
100 1000
859 39496
2715 26293
~gipoundQy~~ygl2 in~rJg~i~ b1nQglYRnY~ Yi( Bivalvia
6 2 1
400 200 100
5152 1717 859
8295 3620 271 5
ei~ IDnH~n~i~ 2 200 171 7 3620 Ostracoda 1 100 959 271 5 biIDQHlh~( Spa ~Q(QRbim ~21Qnisect Diptera pupae
1 94
1
100 1000 100
859 80708
859
2715 35332 2715
Heleidae 1arvae 5 500 4293 4525 Chironomid larvae 1 100 859 2715
Mean number of organismssample 335 Standard deviatiDn 113
Mean number of organismsRI2 287631 Standard deviation 97413
H= 1 86 SO= 064 SR= 155 J= 049
A-32
STATION 55 Date 17 July 1984 Depth 18 m Sali nity (bottom) 00 ppt TeAlperature (bottom) 199 C No of samples 10
Frequency Density (nom2 ) occurrence
Taxa (X) x S D
Nematoda 61 1000 52375 33972 Turbellaria 1 100 859 2715 Oligochaeta 24 900 20606 11590 ~~i2QY~k~~1 iOi[2 bimDQ~xlb~r sp ~Q[QQhi~ sectgni~ Chironomid larvae
3 1
38 3
200 100
1000 300
2576 859
32627 2576
5795 2715
19326 4147
Mean number of organismssample 131 standard deviation 54
M b f 2ean num er 0 organIsms 112477 Standard deviation 46757
H= 184 SD= 066 SR= 085 J= 065
bull
A-33
STATION 45 Date 1 August 1984 Depth 58 m Sal i nity (bottoll) 03 ppt Temperature (bottom) 203 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa nUllber (X) X SD
Nematoda 145 1000 124417 52344 Turbellaria 1 100 859 2715 Mmth~sect iHpoundQ~ Q~~Qi ilQ[i9Oligochaeta
5 3
196
500 300
1000
4293 2576
168286
4525 4147
91064 ~igQYsect~~li int9i Ostracoda
2 3
100 300
171 7 2576
5430 4147
bimnQpoundtl sp ~Q[Q2hiY sectlQni~
240 6
1000 600
206064 5152
73526 4434
sectpoundQtQl poundngnai~Helei dae larvae
1862 1
1000 100
1598713 859
966134 271 ~
Mean number of organismssample 2464 Standard deviation 1156
211 ean num ber 0 f organIsms II 2115590 Standard deviation 992518
H= 124 SD= 041 SR= 089 J= 036
A-34
STATION 1S Date 1 August 1984 Depth 24 II
Salinity (bottom) 00 ppt Temperature (bottom) 198 C No of samp I es 10
Frequency Density (nom2) occurrence ---------------- shy
Taxa (X) X S D
Nuertea 1 100 859 2715 Nellatolllorpha 1 100 859 2715 Nematoda 248 1000 212933 108288 Turbellaria 4 400 3434 4434 ~untb~la Hli~g Oligochaeta
4 206
400 1000
3434 176872
4434 75309
~~igQYli~dli i[t~(gi~ ~QtQpound l binQ~ybt2 sp ~2l~bi Q[i ~2tlgtQ(ila tirisect sectpoundQtel poundl9lla Chironomid larvae
10 1
20 205
1 574
9
500 100 800
1000 100
1000 400
8586 859
17172 176013
859 492836
7727
10709 271 5
14021 48104
271 5 150531
13696
Mean number of organismssample 1284 Standard deviation 290
M b f I 2ean nurn er 0 organIsms III 1102442 Standard deviation 2488B5
H= 211 SD= 071 SR= 1 16 J= 057
A-35
STATION 58 Date 1 August 1984 Depth 55 m Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samp 1es 10
Frequency Densi ty _ ltnom2 ) Total occurrence
Taxa number (7) X SD
Nemertea 1 100 859 2715 Nematoda 22 900 18889 15036 Turbellaria 1 100 859 2715 Oligochaeta 19 700 16313 17385 biiQQgl~QhY~ YiCg~~ 2 200 171 7 3620 ~Q[~i~~l~ m2nil~n2i2 ~Q[QehiYm ~lmQni2
4 164
300 1000
3434 140810
6003 103048
Heleidae larvae 8 500 6869 8868
Mean number of organismssample 221 Standard deviation 111
I 2Mean num ber 0 f organIsms m 189751 Standard deviation 95391
H = L 37 SD= 043 SR= 090 J= 046
A-36
STATION 55 Date 1 August 1984 Depth 15 m Salinity (bottoll) 01 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (i ) X SD
Nemertea 1 100 859 2715 Neutoda 122 1000 104749 7394B Turbellaria 4 300 3434 6003 ~~~~~nt~ secte~poundQa~ Oligochaeta
1 118
100 1000
859 101315
2715 61223
~giQgY~k~~l iot~[m~Qi btbQg~2b~ Y[O ~grQipound~ ~nl~ni b~ngpound~tb~[ Spa
3 1 5 1
200 100 500 100
2576 859
4293 859
5795 2715 4525 2715
~Q[QebiYm ~mQoi sect~QttQ~ ~OQOi Heleidae larvae
42 2 2
800 200 100
36061 171 7 171 7
21341 3620 5430
Chironomid larvae 4 400 3434 4434
Mean number of organismssapIe 306 Standard deviation 169
M b f I 2ean nurn er 0 organIsms m 262732 Standard deviation 145101
H = 198 SD= 067 SR= 1 45 J= 054
A-37
~-- --------------~~-------------
STATION 45 Date 17 August 1984 Depth 61 1
Salinity (bottom) 10 ppt Temperature (bottom) 210 C No of samp 1es 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nematoda 240 1000 206064 130213 ~~h~sect limQ tjQ~~Hi~ fQ[i~~ Oligochaeta
31 2
245
400 100
1000
26617 1717
210357
75228 5430
121374 babgglYQbl~ Yi[~sect 1 100 859 2715 Ostracoda 1 100 859 271 5 biQ~xtb~[ Spa ~~Q~~isect ~[pound~Qisect ~Qgebi HQOi
333 2
143
1000 200
1000
28591 4 171 7
1227BO
106553 3620
106860 sectpoundQUg~ poundg~nsectisect 1738 1000 1492247 68441 7
Mean number of organismssample 2736 Standard deviation 944
M b f I 2ean num er 0 organlslls m 2349130 Standard deviation 810600
H= 172 SD= 056 SR= 079 J= 052
A-38
STATION 18 Date 17 August 1984 Depth 27 III
Sal i ni ty (botto) 01 ppt Temperature (bottom) 214 C No of samples 10
Frequency Density (nom 2 ) occurrence
Taxa (X) X SD
Nematoda 186 1000 159700 62468 ~tgt SPa 2 100 171 7 5430 Turbellaria 8 400 6869 8868 ~~ntbg2 imnipoundQ 12 700 10303 11304 Oligochaeta 283 1000 242984 90509 ~~iQQY~~Y~lls inlgtmggisBivalvia
4 1
400 100
3434 859
4434 271 5
~Qt~i~Y nilnsectisectbimnQpoundttbg[s SPa ~QtQQbi~ islmQDi2
1 17
286
100 900
1000
859 14596
245560
271 5 10747 83461
sectpoundetteln poundDsggnsectisect Chironomid larvae
526 4
1000 3Q0
451624 3434
179610 6003
Mean number of organismssapIe 1330 Standard deviation 162
Mean nurn ber I 20 f organIsms m 1141938 Standard deviation 139389
H= 214 SD= 073 SR= 1 06 J= 060
A-39
STATION 58 Date 17 August 1984 Depth 55 II
Salinity (bottom) 01 ppt Temperature (bottom) 220 C ND of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (7) x S D
Nematoda 68 1000 58385 27689 Turbellar i a 4 200 3434 8295 Oligochaeta 19 800 16313 13084 ~~i~Q~k~~l~ in~~[m~i bitUQ9Y2bYa Yi[~na Bivalvia
3 3 4
300 300 300
2576 2576 3434
4147 4147 6003
gQ[QipoundYl~ mnilDa 1 100 859 2715 binQpoundY~[ sp gQ[Q2UY a~mgnia sect~Qtgl~n ~n~~ni
2 338
6
100 1000 400
171 7 290207
5152
5430 56636 7240
Mean number of organismssample 448 Standard deviation 72
W b f 2lean num er 0 organlsms II 384653 Standard deviation 61988
H = 1 27 SD= 041 SR= 1 02 J= 038
A-40
STATION 55 Date 17 August 1984 Depth 18 m Salinity (bottom) 00 ppt Temperature (bottol) 223 C No of samples 10
Frequency Density (nom 2 ) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 291 1000 249853 118104 Turbellaria 1 100 859 2715 M~ntb~ mni~Q Oligochaeta
1 47
100 1000
859 40354
2715 28347
~~iQQ~sectkY~ll int~[m~gi bitbQQ1YSDY Yi(gn Bivalvia
25 12
6
900 500 400
21465 10303 5152
1231 0 18459 7240
~Q~2ipoundY mnil~ni Ostracoda
11 8
400 600
9445 6869
12442 6773
bmnQpoundYb~r~ SPa 52 1000 44647 19746 ~QrQsbY lmgnisectsQiielo snQ~ni~ Chironomid larvae
43 5
15
1000 400 BOO
36920 4293
12879
21436 6071 8344
Mean number of organismssample 517 Standard deviation 174
M b f I 2ean num er 0 organlsms m 443896 Standard deviation 149431
W = 228 SD= 065 SR= 1 33 J= 062
A-41
STATION 45 Date 29 August 1984 Depth 55 III
Salinity (bottom) 07 ppt Temperature (bottom) 199 C No of samples 10
Frequency Density (noI 2) Total occurrence
Taxa number (X) X SD
Nematoda 192 1000 164851 98380 ~sntbsect limnipoundQlDligochaeta
2 198
200 1000
171 7 170003
3620 67339
~Q[eipoundYls msniln~isect Ostracoda
1 4
100 400
859 3434
2715 4434
bimnQpoundytb[s Spa gQ[Qeniy sect21QOi~ sectpoundQttQlsO poundsOsggOi
164 87
2468
1000 1000 1000
140810 74698
2119025
39283 39460
840890
Mean number of organismssample 311 6 Standard deviation 101 1
ill b f 2nean nUll er 0 organIsms 2675398 Standard deviation 8682B8
W= 116 SD= 036 SR= 060 J= 039
A-42
STATION 18 Date 29 August 1984 Depth 30 bull Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samples 10
Total Frequency occurrence
Densi ty 2
(nom )
Taxa number (~ ) x S D
Nematoda 150 1000 128790 28905 Turbellaria 7 400 6010 9096 ~nh imni~Qj Oligochaeta ~~i~2Y~k~~1 ini~CIDgii bih2g~Qb~ Yi(~U2 Bivalvi a
B 145
1 1 2
600 1000
100 100 200
6869 124497
859 859
171 7
677 3 84732
271S 2715 3620
~Q[Qi~yli miDllgni bimn2pound~ih~C sp ~QtQehiY imQUia Harpacticoida
7 7
265 1
500 300
1000 100
6010 601 0
227529 859
8145 10747
139462 2715
sect~QtiQDi ~Q~Q~i~ Chironomid larvae
2471 2
1000 200
2121601 171 7
1063112 3620
Mean number of organismssample 3067 Standard deviation 121 9
2Mean number 0 f organIsms m 2633326 standard deviation 1046718
H = 1 09 SD= 034 SR= 1 04 J= 029
A-43
STATION 58 Date 29 August 1984 Depth 55 111
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (noI 2 ) Total occurrence -----------------
Taxa nUllber (X) X SD
Nemertea 4 400 3434 4434 Nuatoda 64 1000 54950 25016 Turbellaria 9 400 7727 11047 ~Hl~b limli~Q19 Oligochaeta
1 37
100 1000
859 31769
2715 19006
i~Qyh il(~~ bHtlQSlheln Yl Bivalvia
4 4
20
200 300 400
3434 3434
17172
8215 6003
26541 ~e(ijY l bQ~dlH sp
26 1
700 100
22324 859
25662 2715
~Q[QQhil iQ sectjgUell HD Heleidae larvae
418 20
1
1000 800 100
358895 17172
859
129443 12799 271 5
Mean number of organismssample 609 Standard deviation 175
nean num b er 0 f organIsms 1 111 2 522887 Standard deviation 150164
H= 176 SD= 051 SR= 1 30 J= 047
A-44
I I
I
I
STATION SS
Date 29 August 1984 Depth 21 1
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (no2) Total occurrence
Taxa nUllber (X) x S D
Nematoda ISO 1000 128790 37969 Turbellaria 1 100 859 271 5 Oligochaeta 48 1000 41213 16088 ~i~g~sect~~l iQ~~mgi bi~QQg~gb~sect ~i~nsect
10 14
600 600
eSB6 12020
9050 14137
Bivalvia 4 200 3434 7240 ~Q[Q~Yl niQaa Ostracoda
15 7
700 SOO
12879 6010
15806 7069
bmQg~~~b~ SPa 14 800 12020 8295 ~g[gaby mgni sect~g~~Qn ~ngnai Chironomid larvae
IB4 25 9
1000 900 700
157982 21465
7727
35563 16810 6335shy
Mean number of organismssample 481 Standard deviation B6
2Mean number 0 f organlsms m 412987 Standard deviation 74131
H= 24S SD= 074 SR= 1 23 J= 068
A-45
STATION 45 Date 14 September 1984 Depth 61 11
Salinity (bottom) 03 ppt Temperature (bottom) IB4 C No of samples 10
---------------------------------~----------------------------------------
Taxa TotalnUlllDer
Frequency occ~~~ence
Density (no 2) -----X-------sect7B
Nematoda 189 1000 162275 85233 t1tQ SPa
Turbellaria 2 2
200 100
171 7 171 7
3620 5430
~~~nIng limoifQl t1QQQDi~ flQriQ Oligochaeta
5 19
142
400 800
1000
4293 1631 3
121921
6071 12442 30504
~QQifYl mDl~D bimoQpoundt1hgr Spa Cumacea
19 184
2
800 1000 200
1631 3 157982
171 7
130B4 69541 3620
~Q[QnniYm ~~lmQDi Harpacticoida
118 1
1000 100
10131 5 B59
43367 2715
sectfQIIQD fOQgO Chironomid larvae
1780 1
1000 100
1528308 859
673586 2715
Mean number of organismssample 2464 Standard deviation 874
M ean num b er f 20 organlsms 2115590 Standard deviation 750305
H= 151 SD= 046 SR= 1 07 J= 041
A-46
STATION 18 Date 14 September 1984 Depth 21 III
Salinity (bottom) 01 ppt Temperature (botto) 182 C No of samples 10
Frequency DenSity (nom 2 ) Total occurrence ---------------- shy
Taxa nUlDber (i) X SD
Nemertea 1 100 859 271 5 Nematoda 186 1000 159700 44925 Turbellaria 16 400 13738 20717 ~~Dth~~ limni~Ql Oligochaeta
13 55
700 900
11162 47223
9096 30085
~Q~ei~Yl nil~Qi~ 17 900 14596 7069 bimDg~lbg[ Spa b 500 5152 6003 ~Q[Q2niY ~lgQi~ Harpacti coi da
562 2
1000 200
482533 171 7
136766 3620
sectpoundQttQ~Q~ ~n~ni 791 1000 679153 324290
Mean number of organismssample 1649 Standard deviation 447
I 211ean nUll ber 0 f organIsms I 1415831 Standard deviation 384136
H= 179 SD= 064 SR= 084 J= 054
A-47
STATION 58 Date 14 September 1984 Depth 58 III
Salinity (bottom) 01 ppt Temperature (bottom) 191 C No of sampl es 10
-------------------------------------------~------------------------------Frequency Density (nom 2 )
Total occurrence Taxa number eX) X SD
Nemertea 1 100 859 2715 Nematoda 55 1000 47223 18658 Turbellaria 10 500 8586 11448
1 100 859 2715 Oligochaeta 41 1000 35203 17850 ~~iQQ~~gll iu1g[m~i ~Q[Q~Yl nilD bimnQ~Y~h[ Spa ~Q[Q~hiYm lmgui sectpoundQilg1D poundU2D Chironomid larvae
4 10
2 277
23 4
100 500 200
1000 700 300
3434 8586 171 7
237832 19748 3434
10861 11448 3620
50561 21051 6003
Mean number of organismssample 428 Standard deviation 51
M b f 2ean num er 0 organIsms III 367481 Standard deviation 43743
H= 179 SD= 055 SR= 114 J= 052
A-48
I I
STATION SS Date 14 September 1984 Depth 21 II
Salinity (bottom) 01 ppt Temperature (bottom) 190 C No of samples 10
--------------------------------------------------------------------~-----
Frequency Density (no1I2) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 102 1000 87577 39200 Oligochaeta 34 700 29192 31142 ~iQ2Y~y1 int(mgi~ bithQgl~en~ Yi(gDsect ~Q(~i~Y m~DilgDsecti~ bimDQamp~1h(sect sp ~2(QQhiY slmQD 2poundQiiQlsD ~sD~g~nsecti Chironomid larvae
36 18 16 17
100 16
3
1000 600 800 700
1000 800 300
30910 15455 13738 14596 85860 13738 2576
157BO 20953 10078 14621 32126 10861 4147
Mean number of organismssample 342 Standard deviation 97
2Mean nUllber 0 f organlsms m 293641 Standard deviation 83617
H= 262 SD= 079 SR= 095 J= 083
A-49
Appendix B--Sediment particle size and organic content of the Cathlamet Bay
benthic invertebrate sites 13 March through 14 September
1984
iii
1
Station 18a 48 54 57
Survey 1 1 1 1
Month March March March March
Day 13 13 13 13
Particle size (mm) Phib Percent by weight
gt 40 -2 000 000 000
20- 40 -1 000 000 000
10- 20 0 000 009 000
05- 10 1 018 1079 032
025- 050 2 545 7583 2468
0125- 025 3 8731 1225 6783
00625-0125 4 491 037 657
lt0625 (5-12) 216 067 060
Organic Content 160 116 128
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
b Phi= -log2(sediment particle diameter in mm)
B-1
Station 18a 48 54 57
Survey 2 2 2 2
Month April April April April
Day 5 5 5 5
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 003 093 000
05shy 10 1 005 31 75 023
025shy 050 2 087 5904 2368
0125- 025 3 6316 750 7155
00625-0125 4 3056 026 427
lt0625 (5-12) 533 052 028
Organic Content 081 077 065
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-2
Station 45 55 58
Survey 3 3 3 3
Month April April April April
Day 18 18 18 18
Particle size (mm)
gt 40
Phi
-2
Percent by weight
000 000 000
20shy 40 -1 000 000 000
10shy 20 0 005 009 004
05shy 10 1 010 027 013
025shy 050 2 015 095 225
0125- 025 3 097 536 6111
00625-0125 4 453 2821 2205
lt0625 (5-12) 9420 6511 1442
Organic Content 31 42 14
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-3
Station 18a 45 55 58
Survey 4 4 4 4
Month May May May May
Day 4 4 4 4
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 021
05shy 10 1 000 065 063
025shy 050 2 012 370 230
0125- 025 3 091 4099 4696
00625-0125 4 322 3650 3052
lt0625 (5-12) 9575 1810 1939
Organic Content 330 180 160
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-4
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
5
May
17
000
000
005
016
217
5862
2729
1170
100
45 55 58
5 5 5
May May May
17 17 17
Percent by weight
000 000
000 000
005 008
113 031
325 274
1903 5613
2784 2401
4870 1672
240 110
000
000
000
010
020
079
397
9494
390
B-5
Station 18al 45 55 58
Survey 6 6 6 6
Month June June June June
Day 6 6 6 6
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 020
05shy 10 1 005 051 027
025shy 050 2 005 301 1 79
0125- 025 3 074 3189 5404
00625-0125 4 599 4118 2885
lt0625 (5-12) 9317 2332 1485
Organic Content 340 240 150
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-6
Station
Survey
Month
Day
Particle size Cmm) Phi
gt 40 -2
20shy 40 -1
10shy 20 a
05shy 10 1
025shy 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
7
June
18
000
000
005
029
138
3917
4143
1768
180
45
7
June
18
55 58
7 7
June June
18 18
Percent by weight
000
000
000
010
020
080
427
9464
310
000 000
000 000
000 007
011 022
057 190
957 5286
3023 2642
5957 1853
1 70 110
B-7
Station 18al 45 55 58
Survey 8 8 8 8
Month July July July July
Day 2 2 2 2
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 006 002 006
05shy 10 1 006 0l3 023
025shy 050 2 017 088 171
0125- 025 3 074 2712 5365
00625-0125 4 552 3892 3081
lt0625 (5-12) 9345 3294 l354
Organic Content 410 210 160
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-8
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
9
July
17
000
000
003
013
130
4294
4434
1127
130
45
9
July
17
Percent
000
000
000
006
012
051
046
9885
290
55
9
July
17
by weight
000
000
019
048
091
628
3616
5597
030
58
9
July
17
000
000
004
022
158
5017
3148
1650
140
B-9
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18al
10
August
1
45
10
August
1
55
10
August
1
58
10
August
1
Percent by weight
000 000
000 004
001 004
009 018
018 088
098 306
049 2510
9824 7070
000
005
045
763
3604
4495
932
156
100 190 060
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-10
Station 18 45 55 58
Survey 11 11 11 11
Month August August August August
Day 17 17 17 17
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000 000
20- 40 -1 005 000 000 000
10- 20 0 021 003 000 210
05- 10 1 064 009 000 159
025- 050 2 226 027 045 2656
0125- 025 3 3259 131 712 3719
00625-0125 4 4327 195 1737 1159
lt0625 (5-12) 2098 9635 7506 2097
Organic Content 210 300 160 100
Ii I
B-11
Station
Survey
Month
Day
Particle size (mm) Phi
gt40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
12
August
29
000
000
012
046
186
3465
4498
17 93
241
45
12
August
29
55 58
12 12
August August
29 29
Percent by weight
000
000
002
009
026
118
189
9656
540
000 000
000 000
003 011
011 028
055 1013
859 5033
1596 1827
7476 2089
1 70 120
B-12
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
_-------------------- shy
B-13
Table of Contents
Page
INTRODUCTION bullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbull 1
METHODS bullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbull 1
RESULTS bullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbull 7
DISCUSSION bullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbull 7
ACKNOWLEDGMENTS bullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbull 10
LITERATURE CITED bullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbullbull 10
APPENDIX A--Descriptive summary of benthic invertebrate data
collected in Cathlamet Bay Oregon during March through
September 1984
APPENDIX B--Sediment particle size and organic content of the
Cathlamet Bay benthic invertebrate sites during March
through September 1984
INTRODUCTION
Interest has been shown in the possibility of a deep draft navigational
channel from the mouth of the Col umbia River to either Astoria or Tongue
Point Oregon However deepening the channel may increase the amount and
the duration of saltwater intrusions into Cathlamet Bay Cathlamet Bay is
presently a freshwater embayment saline water only enters the bay when
river flows are reduced (primarily summer and fall)
Cathlamet Bay supports large populations of invertebrates including
the gammarid amphipod Corophium salmonis an important food for many fish
species in the estuary (McCabe et al 1983) Many fishes including
juvenile salmonids feed in Cathlamet Bay It is possible that alterations
of salinity regimes in Cathlamet Bay due to channel deepening would reduce
Corophium and other invertebrate populations subsequently adversely
affecting the use of the bay by feeding fishes
In 1984 the Portland District of the Us Army Corps of Engineers
contracted with the National Marine Fisheries Service in a cooperative
effort to provide additional biological information on the existing benthic
invertebrate and fish communities in Cathlamet Bay The research findings
pertaining to the benthic invertebrate data are being presented in this data
report the fish data are presented in a separate report
METHODS
Thirteen benthic sampling surveys were conducted at approximately 2shy
week interval s from 13 March through 14 September 1984 Initial benthic
invertebrate and sediment samples were collected at Stations 18 48 54 and
57 (Fig 1 Table 1) Due to extremely low benthic invertebrate densities
at Stations 48 54 and 57 these stations were replaced with nearby
1
58 amp
c ~
lt ~ 57 57 - +$ ampmiddotJ~EE~L
IS Yamp1 sf~18 l) bull bull t - amp ~ ~~
$+ ~BAYCATHLAMET
~~
OREGON
1N
5 o KM
~GRAYS BAY WASHINGTONcgt
~ ~
amp - Core sampler
$ - Purse seine +- Trawl
I ) o MI
N
Figure l--Locations and station numbers of fish and invertebrate sampling sites in
Cathlamet Bay
Table 1--Geographic locations of the benthic sampling stations in
Cathlamet Bay
Geographic location Station (Latitude and Longitude) Site Description
18 46 1234 N 123 4252 W Adjacent to Green Dolphin 3 at Wend of North Channel
45 46 1128 N 123 4414 W Center of old Marishytime Basin 600 m N of Corps of Enginshyeers dock
48a 46 1053 N 123 4409 W Adjacent to Can 7 off SW end of Lois Island in South Channel
46 1053 N 123 38 41 W Adj acent to Svensen Island piling jetty W of Red Dolphin 12A
55 46 11 17 N 123 3800 W Adjacent to Red Dolphin 14 at SW end of Minaker Island
46 1300 N 123 3809 W 50 m N of Seal Island in Woody Island Channel
58 46 1354 N 123 4010 W Adjacent to Can 5 in Woody Island Channel [after can was moved (18 July) approxshyimately 300 m Wof can]
a Stations which were replaced during Survey 3
3
stations known to have higher densities --45 55 and 58 respectively
after Survey 2 Higher benthic invertebrate densities would provide better
statistically identifiable relationships between densities and salinity As
a result of the changes in sampling stations only samples from Station 18
were analyzed for Survey 2 (5 April 1984)
Benthic samples were collected by SCUBA divers using a coring device
The sampler was constructed of 385-cm (inside diameter) PVC pipe which
penetrated 15 cm into the sediment thereby collecting a 924 cm3 sediment
sample (Fig 2) The coring device was operated as follows 1) the sampler
was filled with water on the boat to aid in diver descent 2) on the bottom
the diver removed the bottom cap and pushed the sampler into the sediment
until it stopped at the plexiglass plate (15 cm) and 3) the diver placed
his thumb on the top opening (forming a suction) removed the coring device
from the sediment and replaced the bottom cap All samples were taken
within the confines of a square meter aluminum irame
On the boat samples were washed through a 025-mm mesh screen placed
into labeled jars and fixed and preserved in a 4 formaldehyde solution
that contained rose bengal (a protein stain) At the laboratory samples
were washed of the formaldehyde sol ution and sorted with the aid of a 15X
dissecting microscope Invertebrates were identified to the lowest
practical taxon and counted
Initially 16 benthic cores were taken 15 to be used for benthic
invertebrate analysis and 1 for sediment analysis Subsequent statistical
analysis revealed 10 benthic invertebrate cores were sufficient to
adequately describe the benthic communities So after Survey 4
(1 August 1984) 11 benthic cores were collected per station
4
Opening
Top cap
Plexiglass disc c====tt====tt===J
PVC tubing
Bottom cap
1Scm String
Figure 2--Description of PVC benthic invertebrate sampling device
5
Station number date depth bottom salinity and temperature (taken
with a Beckman RS5-3 salinometer and probe1) sample size total numbers
frequency of occurrence and mean number 1m2 are presented in the Results
Besides the above H Shannon-Weaver diversity function (Shannon and Weaver
1963) SD Simpson diversity value (Simpson 1949) SR species richness
(Margalef 1958) and J species evenness value (Pielou 1966) were
calculated The following formulas were used s
1) H= - L Pi 10g2 Pii=1
where Pi= the proportion of individuals belonging to the ith
species
S = number of species s
2) SD= 1 - L Pi2 i=1
where Pi= the proporti on of individual s be longing to the i I th
species
3) SR= (S - l)loge N
where S= the number of species at the station
N= the total number of individuals at the station
4) J= H Ilog2 S
where H= the Shannon-Weaver diversity value
S = the number of species
Sediments were analyzed by seiving those particles lt 00625 mm were
considered the silt-clay fraction Organic content was determined by
burning at 550degC for 24 h
II Reference to trade names does not imply endorsement by National Marine Fisheries Service NOAA
6
RESULTS
Physical and biological data are presented by station in Appendix A A
list of the benthic invertebrate taxa identified during the survey are
presented in Table 1 Appendix B presents the sediment analysis
DISCUSSION
Although the purpose of this study was to obtain base line information
prior to modification of the ship navigational channel caution must be used
in interpreting the data First the MOBILOIL oil spill on 19 March 1984
may have affected the local benthic invertebrate biota Oil started to
occur in the benthic samples on the third survey (18 April 1984) and
continued until the end of the study (14 September 1984) Al though some
stations had more oil than others effects on the invertebrates were not
obvious Secondly year to year variations in benthic invertebrate species
and densities occur in the marine environment (Gray and Christie 1983)
Whether the benthic infauna in Cathlamet Bay varies cyclically is unknown
The long term stability or cycles need to be determined before changes of
the benthic infauna can be attributed to any habitat modification or
dredging proj ect
Salinity is considered to be the most important factor controlling the
distribution of estuarine animals (Kinne 1966) Since we performed our data
collections primarily at low tide the given salinity values must be
considered low values Chapman and Brinkhurst (1981) showed that seasonal
variations of benthic invertebrates in the Fraser River estuary were
correl ated with salini ty One common freshwater oligochaete species in
their study Limnodrilus hoffmeisteri also occurs in Cathlamet Bay Adult
hoffmeisteri can tolerate salinities up to 10 ppt and immatures 14 to
7
Table 1--List of invertebrate taxa found at benthic invertebrate sites
located in Cathlamet Bay Oregon March through September 1984
Coelenterata Hydra sp
Turbellaria Nemertea Nematoda Nematomorpha Oligochaeta
Vejdovskyella intermedia Limnodrilus hoffmeisteri Ilydrilus frantzi
Polychaeta Neanthes limnicola Hobsonia florida Manyunkia speciosa
Gastropoda Lithoglyphys (=Fluminicola)
Bivalvia virens
Corbicula manilensis Ostracoda
Limnocythera sp Mysidacea
Neomysis mercedis Cumacea Amphipoda
Eogammarus spp Eogammarus confervicolus Corophium salmonis Corophium spinicorne Pontoporeia hoyi Eohaustorius estuaris
Isopoda Saduria entomon
Harpacticoida Scottolana canadensis
Insecta Diptera adult Diptera pupae Heleidae larvae Chironomidae larvae Chironomidae pupae Trichoptera larvae Hymenoptera Collembola
Hydracarina
Occurrence not quantified
8
15 ppt (Chapman and Brinkhurst 1980) This species appears to be a useful
salinity indicator and future benthic work should identify and enumerate
this species Due to time and taxonomic expertise requirements only the
oligochaete species Vejdovskyella intermedia was enumerated Salinity
tolerances of this species are unknown
Since intersti tial salinities do not vary dielly as do salini ties in
the water column (Sanders et al 1965) interstitial salinities should have
been measured Al though many infauna species may be exposed to overlying
water because of activity andor tubes (exCorophium spp) many benthic
invertebrates are dependent on interstitial salinity levels Measurements
of interstitial salinities are necesssary to determine benthic infauna
sensitivity to salinity intrusion
Finally there appeared to be a large amount of within station
variability in the sediment texture particularly at Stations 55 and 58
The sediment at Station 55 ranged from a very fine sand to almost all clay
The sediment texture variability at Station 58 was a result of the uS
Coast Guard moving Can 5 to a new location forcing us to estimate the
previous location of our station
ACKNOWLEDGMENTS
We wish to thank Maurice Laird Nick Zorich Larry Davis Roy Pettit
Edward Koller and David Miller for their assistance in developing the
sampling device and collecting the samples We express special thanks to
Sandy Lipovsky Thomas Moylan and Susan Newhouse for helping sort and
identify the invertebrates
9
LITERATURE CITED
Chapman P M and R O Brinkhurst
1980 Salinity tolerance of some selected aquatic oligochaetes Internat
Rev der Gesamten Hydrobio1gie 65499-505
Chapman P M and R O Brinkhurst
1981 Seasonal changes in interstitial salinities and seasonal movements
of subtidal benthic invertebrates in the Fraser River estuary BC Est
Coast Shelf Sci 1249-66
Gray J S and H Christie
1983 Predicting long-term changes in marine benthic communities Mar
Ecol Prog Sere 1387-94
Kinne O
1966 Physiological aspects of animal life in estuaries with special
reference to salinity Neth J of Sea Res 3 227-244
Margalef R
1958 Information theory in ecology Gen Syst 336-71
McCabe G T Jr W D Muir R L Emmett and J T Durkin
1983 Interrelationships between juvenile sa1monids and nonsalmonid fish
in thl Columbia River estuary Fish Bu11U S 81(4)815-826
Pie10u E L
1966 The measurement of diversity in different types of biological
collections J Theor BioI 13131-144
Sanders H L P C Mange1sdorf and G R Hampson
1965 Salinity and faunal distribution in the Pocasset River
Massachusetts Limno Ocean 10216-229
Shannon L E and W Weaver
1963 The mathematical theory of communication Univ of Illinois Press
Urbana Ill
10
Simpson E H
1949 Measurement of diversity Nature 163688
11
APPENDIX A--Descriptive summary of benthic invertebrate data collected in
Cathlamet Bay Oregon during March through September 1984
STATION 18 Date 13 March 1984 Depth 46 m Salinity (bottom) 11 ppt Temperature (bottom) 67 C No of samples 15
Frequency Density (nom 2 ) Total occurrence
Taxa number (7) X SD
Nemertea 2 67 1145 4434 Nematoda 134 1000 76702 33169 Turbellaria 22 667 12593 15854 ~~n~b~~ imnpoundQ 31 Oligochaeta 486
933 17744 1468 1 100() 278186 138779
~QtQif~12 mnil~nsectisect 24 Ostracoda 39
933 13738 8462 800 22324 17715
~Q[QQbiYm ~lmQni~ 74 867 42358 38B70 EQntQIH~i2 Qyi 1 EQri gnQQn 1 Harpacticoida 7
67 572 2217 67 572 221 7
333 4007 7159 Insecta 2 67 1145 4434 Chironomid larvae 20 667 1144 B 10090 Collembola 95 867 54378 82588 Hydracarina 1 67 572 221 7
Mean number of organismssample 626 Standard deviation 19 1
M ean num b er 0 f 2organIsms III 537484 Standard deviation 163579
H= 237 so= 069 SR= 1 42 J= 061
A-l
STATION 48 Date 13 March 1984 Depth 107 m Salinity (bottom) 05 ppt Temperature (bottom) bB C No of sampl es 15
Frequency Densi ty (nom 2 ) Total occurrence
Taxa number (7) X SD
Nemertea 31 6b7 17744 1849 1 Nematoda 38 667 21751 22685 Oligochaeta 4 133 2290 6859 ~QQpound12 2nil~nsectisect 31 Ostracoda 1
667 17744 29648 67 572 221 7
~Q9~~[~ spp 1 ~Q[Q2l ~~lQnisect 1 ~Q2sectiQisect sectisect 4 Harpacticoida 1
67 572 2217 67 572 221 7
200 2290 5097 67 572 221 7
Insecta 2 133 1145 3021 Diptera adult 1 67 572 2217 Collembola 24 467 13738 30923
Mean number of organismssample 93 Standard deviation 59
Mean number of organismsm2 795b4 Standard deviation 50740
H= 255 SD= 079 SR= 1 55 J= 071
A-2
STATION 54 Date 14 March 1984 Depth 177 m Salinity (bottom) 00 ppt Temperature (bottom) 66 C No of samples 15
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nemertea 47 1000 26903 14096 Nematoda 7 267 4007 9102 Turbellaria 9 333 5152 1114B Oligochaeta 11 333 6296 10989 Gastropoda 1 67 572 2217 ~Q(Qi~Yl mnil~n2i~ Ostracoda
199 3
1000 200
11390B 171 7
97165 3555
gQ[Qehiy sectlmQnisect Harpacticoida
3 1
200 67
171 7 572
3555 221 7
Heleidae larvae 29 867 16600 10989 Chironomid larvae 2 133 1145 3021 Collembola 2 67 1145 4434
Mean number of organismssample 209 Standard deviation 103
2Mean number 0 f organIsms m 179734 Standard deviation 88247
H = 1 86 SD= 056 SR= 1 33 J= 052
A-3
STATION 57 Date 13 March 1984 Depth 91 m Salinity (bottom) 00 ppt Temperature (bottom) 63 C No of sampl es 15
Frequency Densi ty (no 81 2) Total occurrence
Taxa number (X) X SD
Nemertea 27 667 15455 13459 Nematoda 8 400 4579 6381 Turbellaria 4 200 2290 5097 Oligochaeta 8 400 4579 6381 ~g[gipound~l mnilui Ostracoda
1 1
67 67
572 572
2217 2217
~Qgml[a spp 1 67 572 2217 ~Q[Qeni~m lmQnisect Harpacticoida
2 1
133 67
1145 572
3021 221 7
Insecta 3 67 171 7 b651 Chironomid larvae 1 b7 572 221 7 Collembola 37 400 21179 65700 Hydracarina 1 67 572 221 7
Mean number of organismssample 63 Standard deviation 82
Mean number of organismsm2 54378 Standard deviation 70029
H= 253 SD= 075 SR= 1 83 J= 068
A-4
STATION 18 Date 5 April 1984 Depth 30 II
Salinity (bottoll) 00 ppt Temperature (bottom) 90 C No of samples 15
Frequency Densi ty (no1I 2) Total occurrence
Taxa number (i ) If S D
Nemertea 11 bOO 6296 6042 Nematomorpha 2 133 1145 3021 Nuatoda 119 1000 6811 6 50947 Turbellaria 20 600 11448 13640 ~~~nin~sect liIDni~Q12 Oligochaeta
33 481
1000 1000
18889 275324
10364 142326
~Q~Qi~Yl m2nil~ni2 23 600 13165 1371 7 Ostracoda 33 933 18889 10861 gQ(QQrriYID sect2mQnisectHarpacti coi da
38 7
933 133
21751 4007
13329 13328
Chironomid larvae 16 667 9158 8868 ColI embola 1 67 572 2217
Mean number of organismssample 523 Standard deviation 227
M b f 2ean num er 0 organIsms m 448762 Standard deviation 194508
H= 202 SD= 059 SR= 114 J= 0S6
A-5
STATION 45 Date 18 April 1984 Depth 64 III
Salinity (bottom) 00 ppt Temperature (bottom) 95 C No of samples 15
Total Frequency occurrence
Density (noI 2 )
Taxa number (X) X SD
Nematoda 171 1000 97890 92277 tyg~ sp Turbellaria
1 29
67 600
572 16600
221 7 23506
H~nng~ imDi~g tQQsectQl fg~ig Oligochaeta ~Q[Qi~Y2 m2niD~i Ostracodamiddot
9 41
367 42
100
400 1000 1000 800
1000
5152 23469
210071 24041 57240
781 5 13563
100542 19254 43134
~Q[Qeniym amQnisectHarpacticoida Heleidae larvae
37 2049
1
933 1000
67
21179 117284B
572
189B5 616612
221 7 Chironomid larvae 3 200 171 7 3555 Collembola 1 67 572 221 7 Insect parts 1 67 572 221 7
Mean number of organismssample 1901 Standard deviation 864
b f 2nean num er 0 organIsms m 1632485 Standard deviation 741931
H = 1 52 SD= 046 SR= 1 13 J= 040
A-6
STATION 18 Date 18 April 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom) No of samples 15
Frequency Density (nom2) Total occurrence
Taxa nueber (X) x s D
Nemertea 13 533 7441 9663 Nematomorpha 3 200 171 7 3555 Nematoda 195 1000 111618 63675 Turbell ari a 9 467 5152 6326 ~~ni~~ i~ni~Ql~ 30 867 17172 129B1 Oligochaeta 580 1000 331992 108880 ~QC~i~Ml~ m~nil~n~isectOstracoda
28 18
1000 667
16027 10303
11179 10364
~Q[Q~~iYm sect~Qni2 sect~ci~ gniQQnHarpacticoida
105 1
17
1000 67
400
60102 572
9731
25553 2217
19970 Chironollid larvae 16 667 9158 8B6B
Hean number of organismssample 677 Standard deviation 199
M ean num b I 2er 0 f organIsms AI 580986 Standard deviation 171095
w = 202 SD= 062 SR= 1 10 J= 056
95 C
A-7
STATION 58 Date 18 April 1984 Depth 67 m Salinity (bottom) 00 ppt Temperature (botto) No of samples 15
Frequency Density (nom2) Total occurrence
Taxa number (~) X SD
Nemertea 62 933 35489 26338 Nematoda 224 1000 128218 49903 Turbellaria 9 600 5152 4354 ~nt~sect imni~Q Oligochaeta
1 79
67 1000
572 45220
2217 23506
bnQgYRhY~ Yi~~nE ~Q(~i~Y nil~ni Ostracoda
2 10 19
67 533 600
1145 5724
10876
4434 6214
10989 ~Q[QeniY sectQOiHarpacticoida
30 2
B67 133
17172 1145
12142 3021
Heleidae larvae 6 333 3434 5430 Chironomid larvae 9 400 5152 7B1 5 Chironomid pupae 2 133 1145 3021
Mean number of organismssample 303 Standard deviation 94
I 11 ean num ber 0 f organlsms 2 260442 Standard deviation 81043
H= 233 SO= 070 SR= 1 36 J= 063
97 C
A-B
Frequency Density (nolm 2) Total occurrence -----------------
Taxa number (7) X SD
Nemertea 16 467 9158 10989 Nematoda 266 1000 152258 54541 Turbellaria 23 600 13165 15518 ~l~nH ~Q~iQH 2 133 1145 3021 Oligochaeta 181 1000 103604 56532 bi~hQg~Qn~~ ~it~l~ ~QtQifg mli~lsectisectOstracoda
3 59 15
200 1000 733
1717 33772 8586
3555 23054
7256 ~Q[QQhiY HmQtlsect ~Q[QehiYm sect21tlfQ[lg EQlQQQt~i hQ~i
466 3 1
1000 200 67
266738 171 7 572
75094 3555 221 7
Harpacticoida 30 400 17172 40402 Chironomid larvae 10 533 5724 6214
Mean number of organismssa_pIe 717 Standard deviation 143
I 2Mean number 0 f organlsms m 615330 Standard deviation 122532
H= 226 SO= 072 SR= 119 J= 061
STATION 55 Date 18 April 1984 Depth 30 1ft
Salinity (bottom) 00 ppt Temperature (bottom) 93 C No of SaIIples 15
A-9
STATION 45 Date 4 Hay 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 103 C No of samples 10
Frequency Density (noI2) Total occurrence ---------------- shy
Taxa number (Xl X SD
Neutoda 269 1000 230963 167296 Turbellaria 1 100 859 2715 ~u~yuti Q~iQ ~Ub imni~Q
1 2
100 100
859 171 7
2715 5430
j2~Qn flec Oligochaeta
28 169
BOO 1000
24041 145103
19326 74351
~igeYk~ll iulCIDai ~Q(Qi~Y uini Ostracoda
32 4 5
aoo 400
400
27475 3434 4293
22463 4434 6071
biQQ~~tbt sp ~e(QQbYm mQoi sectampQeD ~nQDisect Chironomid larvae
25 2
578 2
900 200
1000 200
21465 1717
496271 171 7
15279 3620
293820 3620
Mean number of organismssample 111 8 Standard deviation 522
11 b f I 2ean num er 0 organIsms m 95991 5 Standard deviation 447842
H= 193 SD= 065 SR= 118 J= 052
A-10
STATION 18 Date 4 Hay 1984 Depth 34 II
Salinity (bottom) 00 ppt Temperature (bottom) 104 C No of saMples 10
Frequency Density (noI 2 ) occurrence ----------------shy
Taxa (X) X SD
Nemertea 10 600 8SB6 10709 Nuatoda 153 1000 131366 47899 Turbellaria 8 600 6869 6773 ~n1b limnpoundQl Oligochaeta
11 147
700 1000
middot9445 126214
9449 6231 7
~i~g~kXl in1(m~i ~g(2iY OiOi Ostracoda
86 4 1
900 300 100
73840 3434 859
61543 6003 2715
bimoQpoundx1b( sp ~2(QQbiYm mgoiDi ptera adult
3 57
3
300 900 300
2576 48940
2576
4147 21815 4147
Chironomid larvae 4 300 3434 6003 Chironomid pupae 1 100 859 2715
Hean nUMber of orQanismssample 489 Standard deviation 160
b f 2nean nUll er 0 organIsms II 418997 Standard deviation 137721
H= 243 SD= 076 SR= 1 34 J= 066
A-l1
STATION 5B Date 4 Hay 1984 Depth 61 bull Salinity (botto~) 00 ppt Temperature (bottom) 110 C No of suples 10
Frequency Density (nom 2) Total occurrence ---------------- shy
Taxa number (X) X SD
Neertn 41 1000 35203 21206 Nematoda 211 1000 181165 53305 Turbellaria 4 200 3434 7240 Oligochaeta 89 1000 76415 32240 ~i~2~~~11~ iU1(~i~bi1begygny YitQ ~e(biYl ~OiDi OstracDda
4 3
20 1
400 200 BOO 100
3434 2576
17172 859
4434 5795
19829 2715
biue~1bt~ sp ~2(egniY Imeoi sectg11g1O OdD Helei dae larvae
5 32
1 1
400 900 100 100
4293 27475
859 859
6071 18010 2715 2715
Chironomid larvae 7 400 6010 9096
Mean number of organismssample 419 Standard deviation 93
b f 2ean nUll er 0 organIsms m 359753 Standard deviation 79875
H= 221 SD= 068 SR= 138 J= 060
A-12
Frequency Density (nolm 2) occurrence -----------------
Taxa (X) X SD
Nemertea 23 900 1974S 15171 Neutollorpha 1 100 859 271 5 Nellatoda 269 1000 230963 69923 Turbellaria 10 600 8586 991 4 ~~xYnki Q~ampiQ 4 300 3434 6003 ~nb limnipoundQl Oligochaeta
1 79
100 1000
859 67829
2715 40363
~i~Q~kXl io[~i biDe9XQDX ~i[~OBi valvi a
11 3 1
800 300 100
9445 2576 859
6335 4147 271 5
~Q[~poundY mnil~n bimoQampXD[ sp ~Q[QabiY lQO Harpacticoida
18 2
159 1
700 200
1000 100
15455 171 7
135659 859
13904 3620
54272 2715
Chironomid larvae 2 200 171 7 3620 Trichoptera larvae 1 100 859 2715
STATION 55 Date 4 May 1984 Depth 21 m Salinity (bottom) 00 ppt Temperature (bottom) 107 C No of suples 10
Mean number of organismssamples 594 Standard deviation 147
Mean number of organismsm2 501422 Standard deviation 126525
H= 219 aD= 069 SR= 1 63 J= 055
A-13
STATION 45 Date 17 May 1984 Depth 61 m Sal i ni ty (bottom) 01 ppt Temperature (bottom) 121 C No of sampl es 10
Frequency Total occurrence
Taxa nUlllber (7)
NelDertea 1 100 859 2715 Nematoda 163 1000 139952 127996 Polychaeta 1 100 859 2715 ~~~n~h~ imni~Qs Hobsonia florida
2 6
200 600
171 7 5152
3620 4434
Oligochaeta 329 1000 282479 13291 8 ~~lQQYsectk~~12 in~~rmQi 57 900 48940 33142 ~Qr~ipound~2 ffi2niDi 6 500 5152 6003 Ostracoda 5 200 4293 10898 bimDg~yth( SPa 13 600 11162 12176 ~Q(Qebi~m sectQDisect Harpacticaida
2 2
200 100
1717 1717
3620 5430
2poundQttQD poundDQDsectisectDiptera adult
296 1
1000 100
254146 859
172633 271 5
Mean number of organismssample 884 Standard deviation 326
b f I 2nean num er 0 organlss m 759002 Standard deviation 280131
H= 209 SD= 071 SR= 1 33 J= 055
A-14
STATION 18 Date 17 May 1984 Depth 30 m Salinity (bottom) 00 ppt Temperature (bottom) 122 C No of samples 12
Frequency Density (nom2) Total occurrence -----------------
Taxa number (X) X SD
Nematoda 50 833 35775 22815 ~ntb limnipoundQl 3 Oligochaeta 97
250 833
2147 69404
3883 48495
~igQ~~k~ intr~ 27 ~QrQipoundY mnin~i~ 5
667 333
19319 3S7S
19068 5740
Ostracoda 1 83 716 2479 bimnQpound~nr sp 5 ~Q(Q~bY ~mQni S4 ~Q(Q~niY ~QinipoundQ(n 3
333 833 250
3578 60102
2147
5740 43780 3883
fgnQ2Q(i bQ~i 1 sectpoundQtgO poundnQn~i 2 Chironomid larvae 4
83 167 250
716 1431 2862
2479 3342 5592
Mean number of organismssample 235 Standard deviation 116
nean nURl b er 0 f organlslls II 2 201771 Standard devi ati on 99221
H= 236 SD= 075 SR= 1 35 J= 066
A-15
STATION 58 Date 17 May 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) 123 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nemertea 2 100 171 7 5430 Nematoda 75 1000 64395 34404 ~~2Qih~a limQi~Q 2 200 171 7 3620 Oligochaeta 60 1000 51516 33376 ~~igQY~~~12 iQ~[~~gi 2 200 171 7 3620 bitQQ9~Bh~sect Yr~Qsect 3 200 2576 579~
gQ[Qi~Yl ID2Dil~nsectisect Ostracoda
6 6
500 400
5152 5152
6003 8295
binQ~~nr[ sp gg[QQOYm mQQsect sect~QttQn 5n2Q~nsectia Chironomid larvae
2 34
1 1
200 1000
100 100
171 7 29192
859 859
3620 12927 271 5 2715
Mean number of organismssample 194 Standard deviation
2Mean nurn ber 0 f organIsms fA 166568 Standard deviation 56259
H= 225 SD= 072 SR= 1 45 J= 063
A-16
66
STATION 55 Date 17 May 1984 Depth 24 II
Salinity (bottom) 00 ppt Telllperature (bottom) 126 C No of samples 10
Total Frequency occurrence
Taxa nUllber (X) X SD --------------------------------------------------------------~-----------
Nematollorpha 2 200 171 7 3620 Nematoda 63 1000 54092 35297 Oligochaeta 94 1000 80708 44004 ~~iQQY~k~~l iQt~(m~Qi bitnQg~Qh~~ Yi[~Q gQ[QipoundY~ mni~Q~i Ostracoda
10 9 4 2
600 800 300 100
8586 7727 3434 171 7
9050 4874 6003 5430
bimnQ~~ln~[e sp ~Q(QQbiYm mQD ~Q[QQbiYm 2inipoundQ[n~ Chironomid larvae
6 142
3 1
600 1000 200 100
5152 121921
2576 859
4434 50682 5795 2715
Mean number of organismssample 336 Standard deviation 62
2Mean num ber 0 f organisms m 288490 Standard deviation 53421
H= 214 SD= 071 SR= 119 J= 062
A-17
STATION 45 Date 1 June 1984 Depth 61 m Salinity (bottom) 01 ppt Temperature (bottom) 139 C No of samples 10
Total Frequency occurrence
Density (no2)
Taxa nUllber (1) X SD
Nematoda 174 900 149396 132347 Turbellaria 5 200 4293 10898 ~~~QiQ~sect tmQtpoundQ~ ~QQsectQ flQi~sect Oligochaeta ~~iQQysecttygl~ iQl~rm~~i2 ~Q[Qi~~l~ ~~DilgDsectisect Ostracoda
5 20
190 103
12 5
400 900
1000 900
60 (I 400
4293 17172
163134 88436 10303 4293
6071 8095
92563 51524 11304 6071
bimnQpoundytng[ sp ~gQmYsectisect IDg[pound~Qisect ~Q[QQhi~m sectlmQDisect sectpoundQtiQlsectQ pound~Qgsectisect ChironQmid larvae
33 1
10 375
2
900 100 700
1000 200
28334 859
8586 321975
171 7
17196 2715 7010
179201 3620
Mean number of organismssample 935 Standard deviation 254
nurn b 0 f 2lean er organlsms m 802791 Standard deviation 218423
H= 239 SD= 075 SR= 1 22 J= 065
A-18
STATION 18 Date 1 June 1984 Depth 30 AI
Salinity (bottom) 00 ppt Temperature (bottom) 134 C No of samples 11
Frequency Density (no 1m2)
Taxa Total number
occurrence (X)
---------------- shyX SD
Turbellaria 14 636 10928 1157 7 ~~~Qltlg~ ilipoundQ~ Oligochaeta
10 178
727 1000
7805 138937
601 6 67913
~~iQQy~tY~l~ ill~[m~Qi~ 122 636 95227 93619 ~Q[Qipound~ l~i~lsectisect Ostracoda
7 1
455 9 1
5464 78 1
6946 2589
billQylhg[ Spa 16 818 12489 10420 GQ[QQQil HQi~ 139 1000 108496 70934 gQ[Qebi secteiifQ[~ sectQiiQi2 ~Q~sectisect Diptera pupae
1 2 1
9 1 182
11 1
781 1561 781
2589 3473 2589
Chironomid larvae 2 182 1561 3473
Mean number of organismssample 714 Standard deviation 284
nean num b er 0 f organlsms m 2 612728 Standard deviation 244249
H= 232 SD= 075 SR= 1 25 J= 063
A-19
STATION 58 Date 1 June 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 138 C No of samples 10
Frequency Density (noI 2 ) Total occurrence
Taxa number (X) X SD
Nematoda 173 1000 148538 47383 Turbellaria 3 300 2576 4147 Oligochaeta 53 1000 45506 32139 ~giQgY2k~g~ ini~[m~Qi~ bQg91YehY2 Yi[~nsect ~Qr~i~Yl m~nl~n~i
26 1
10
600 100 500
22324 859
8586
3391 2 2715
13424 bimnQpound~Q~[ sp ~Q9~m[Y poundgnitYpoundQlysect ~QtQehiYm ~lQni
4 1
46
200 100
1000
3434 859
39496
8295 2715
22243 Chironomid larvae 1 100 859 271 5
Mean number of organismssample 318 standard deviation 103
M b f I 2ean num er 0 organlsms III 273035 Standard deviation 88842
H = 1 99 SD= 065 SR= 1 08 J= 060
A-20
STATION 55 Date 1 June 1984 Depth 27 m Salinity (bottom) 00 ppt Temp era t u r e (b 0 t tom) 140 C No of samples 10
Frequency Density (nom 2 ) Total occurrence
Taxa nueber (X) X SD
Nematoda 157 1000 134800 69524 Turbellaria 9 400 7727 13696 tlHl~lk ~2~~iQH 1 100 859 2715 Oligochaeta 49 1000 42071 32745 ~~iQQysect~gl~ S[l9sect bHbQghQb~~ Yirl~
10 1
400 100
8586 859
12799 2715
tQ[Qpoundls l2lilUsect bilQHSbg[ sp ~QrQQbil nllQisectHarpacticoida
4 7
134 1
400 500
1000 100
3434 6010
115052 859
4434 7069
44742 271 5
sectpoundQUQlls poundsQgn~sect Chironomid larvae
1 1
100 100
859 859
271 5 2715
Hydracarina 1 100 859 2715
Hean number of organismssample 376 Standard deviation 132
M b f 2ean num er 0 organIsms m 322834 Standard deviation 113127
H= 202 SD= 068 SR= 1 40 J= 055
A-21
STATION 45 Date 18 June 1984 Depth 67 m Salinity (bottom) 01 ppt Temperature (bottom) 149 C No of samples 10
Frequency Density (nom2)
Taxa Total nUllber
occurrence ex) i SD
Nematoda 109 1000 93587 3891 7 Turbell ari a 3 200 2576 5795 ~g~tbg limoipoundQl Q~Qni2 fQ(i~2 Oligochaeta ~gigQ~~Y inl[ggi ~Q[QiSY2 moilo Ostracoda
3 2
194 44
7 3
200 200
1000 1000 200 200
2576 171 7
16656B 37778 6010 2576
5795 3620
118364 36020 12831 5795
bimoQampl~n~[2 sp ~Q[QQbiYm lmgoi Harpacticoida sectpoundQQ1202 pound2022Osect Chironomid larvae
68 1 1
113 2
900 100 100
1000 200
58385 859 859
97022 171 7
97627 2715 2715
73976 3620
Mean number of organismssa_pie 550 Standard deviation 371
Mean nUll ber 0 f organIsms 2II 472230 Standard deviation 318519
H= 242 SD= 077 SR= 1 32 Ja 065
A-22
STATION 18 Date 18 June 1984 Depth 34 m Salinity (bottom) 00 ppt Temperature (bottom) 155 C No of samples 10
Frequency Density (nom 2) Total occurrence ----------------shy
Taxa nUlber (Z) X SD
Neutoda 291 1000 249853 138826 Turbellaria 1 100 859 2715 ~~n~~nki~ sectQ~~iQ~2 ~g~ntbg2 limni~Q9 Oligochaeta
1 3
123
100 300
1000
859 2576
105608
271 5 4147
48240 ~~igQY~~~~9 int~(mgii ~Q[~i~~~ mini~ni bimnQ~ylbg(~ Spa
67 6 5
1000 500 400
57526 5152 4293
40485 6003 6071
~Q(QebiYm ~imQnisect Harpacticoida
80 2
1000 200
68688 171 7
41276 3620
sect~QttQini ~2nig~n~i Chironomid larvae
2 4
200 300
171 7 3434
3620 6003
Mean number of organismssample 585 Standard deviation 194
I 2Mean urn b er 0 f organIsms m 502281 Standard deviation 166943
H= 203 SD= 068 SR= 1 20 J= 057
A-23
STATI ON 58 Date 18 June 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (noI 2) Total occurrence
TaKa number (X) X SD
Nellertea 2 100 1717 5430 Nematoda 160 1000 137376 6361 1 Turbellaria 4 400 3434 4434 Oligochaeta 36 1000 3091 0 14705 ~iQQYik~ Q1rQ 4 300 3434 6003 bitnQgl~ebysect YrDsect ~Q[QiY~ ~~nni biQQpoundY1h[ sp ~Q[Qeng ~ilQD Chironomid larvae
3 1 3
61 1
300 100 300
1000 100
2576 859
2576 52375
859
4147 2715 4147
1428 1 2715
Chironollid pupae 1 100 859 271 5
Mean number of organismssample 276 standard deviation 72
nean nurn b er 0 f organIsms I 2 236974 Standard deviation 61410
H = 1 78 SD= 060 SR= 1 23 J= 051
A-24
STATION 55 Date 18 June 1984 Depth 18 m Salinity (bottom)1 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (no 1m2) occurrence
Taxa (X) X SD
Nematoda 160 1000 137376 43967 Turbellaria 1 100 859 271 5 Oligochaeta 61 1000 52375 31985 ~~iQQY~kY~~ int~[mQi~ ~Q[Qipound~l~ m~nini~ biIDnQ~Ylb[s sp
3 3 3
300 300 300
2576 2576 2576
4147 4147 4147
~Q[Q~bi~ ~slIDQni~ Chironomid larvae
85 6
1000 600
72981 5152
34165 4434
Mean number of organismssample 322 Standard deviation 75
2Mean number 0 f organIsms m 276469 Standard deviation 64099
H= 178 5D= 065 SR= 0B4 J= 059
A-25
Frequency Density (no2) occurrence -----------------
Taxa (7) X SD
Nematoda 104 1000 89294 47409 Turbell ar i a 1 100 859 2715 ~~~nQ~sect imni~Q~ tjQQsectQlis flQig~ Oligochaeta
2 1
297
100 100
1000
171 7 859
255004
5430 271 5
146273 ~~i~QYsect~Y~lls ilr2is gQrQi~y~ IDDilDia
24 4
600 300
20606 3434
27212 6003
Ostracoda 2 200 171 7 3620 biDQSy~b~C~ sp M~QYsectisect m~r~~Qi ~QrQeniy QD Harpacticoida
157 1 1 1
900 100 100 100
134800 859 859 859
73197 2715 2715 2715
sectpoundQttQDs SsDQD 113 900 97022 61656
STATION 45 Date 2 July 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) No of samples 10
172 C
Mean number of organismssample 708 Standard deviation 339
M ean num b er f 20 organisms 607889 Standard deviation 290B22
H= 216 SD= 073 SR= 1 27 J= 058
1-26
STATION 18 Date 2 July 1984 Depth 24 WI
Sal inity (bottom) 00 ppt Temperature (bottom) 172 C No of samples 10
--------------------------------~-----------------------------------------Frequency Density (nom2)
Total occurrence Taxa number (7) X SD
Nematoda 202 1000 173437 113532 ~~~nih~sect mnpoundQ~ Oligochleta
4 102
400 1000
3434 87577
4434 54873
~~igQYsect~Y~12 inl~rmgi2 ~Q[~poundYl~ m~ni~nsectisect bimnQpoundylh~[~ Spa
115 4
15
900 300 900
98739 3434
12879
100720 6003 9274
~Q[QQniY~ sect~QDi~ 55 900 47223 40525 Harpacticoida 1 100 859 2715 sectpoundQiiQlD SDg~DEisect Chironomid larvae
2 6
200 400
1717 5152
3620 7240
Hymenoptera 1 100 859 2715 Hydracarina 1 100 859 2715
Mean number of organismssample 508 Standard deviation 253
2Mean num ber 0 f organIsms m 436169 Standard deviation 217580
H= 225 SD= 074 SR= 1 22 J= 063
A-27
STATION 58 Date 2 July 1984 Depth 58 1
Salinity (bottom) 00 ppt Temperature (bottom) IBO C No of samples 10
Frequency Density (no2) Total occurrence
Taxa number ltX) i SD
Nematoda 151 1000 129649 42729 Turbellaria 1 100 859 2715 01 i gochaeta 41 1000 35203 22698 ~~i~e~~~ int~~m~~ 3 200 2576 5795 btbQglYRhY~ Yir~n~ ~e~~ampy mni~niii bimQeamp~tb~ sp ~e~eQhiY ~mQni Chironomid larvae
1 4 2
68 1
100 300 200
1000 100
859 3434 171 7
58385 859
271 5 6003 3620
1557 1 2715
Mean number of organisassample 272 Standard deviation
I 2Mean num ber 0 f organIsms I 233539 Standard deviation 62546
H = 1 69 SD= 061 SR= 099 J= 053
A-28
73
STATION 55 Date 2 July 1984 Depth 15 III
Salinity (bottom) 00 ppt Temperature (bottom) 182 C No of samples 10
Frequency Density (nom2) occurrence
Taxa (X) X SD
Nematoda 184 1()00 157982 5264B Turbellaria 1 100 859 271 5 Oligochaeta ~~iQQ~sect~Y~ll~ n~[~~Qi~ bitnggYQDYsect Yi[~nsect ~QrQipoundM2 m2ni~nsectisect bimnQpoundYn~[2 sp ~QrQQhiM Qni Harpacticoida
91 2 1 B 2
96 2
1000 200 100 500 200
1000 200
78133 171 7 859
6869 171 7
82426 1111
26058 3620 271 5 1890 3620shy
25980 3620
ChirDnomid larvae 5 400 4293 6071 Chironolllid pupae 1 100 859 2715
Mean number of organismssample 393 Standard deviation 53
2t1ean nUllber Df organlsms III 337430 Standard deviatiDn 45080
H= 187 SD= 067 SR= 116 J= 054
A-29
STATION 45 Date 17 Jul y 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (X) X SD
Nematoda 215 1000 184599 45837 ~~n~b~~ imDipoundQ Qe~Qni fllHi2
3 1
300 100
2576 859
4147 2715
Oligochaeta 305 1000 261873 147955 ~~iQQY~k~ in~rm~2i ~Qr~ipoundYl IDniln~i~ Ostracoda
17 1 2
500 100 200
14590 859
171 7
22554 2715 3620
bmnQpound~ihr sp ~QCQQhiY ~lQD~
176 1
1000 100
151114 859
57125 2715
Harpacticoida 4 300 3434 6003 sectQ~~Qn poundnQnai~ Chironomid larvae
91 5
1000 400
78133 4293
61310 6071
Mean number of organismssample 821 Standard deviation 275
M b f 2ean num er 0 organlsms m 70491 1 Standard deviation 236369
H= 215 SD= 073 SR= 114 J= 060
A-30
STATION 18 Date 17 Jul y 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom 203 C No of samples 10
Frequency Density (001 2 Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 339 1000 291065 119140 Turbellaria 3 200 2576 5795 ~~2~b~~ limnipoundQ12Oligochaeta
4 18S
300 1000
3434 161417
6003 89393
~~iQQy~~~ls in~(ID~Qi bim~Qampy~bg(2 Spa
34 16
800 700
29192 1373B
22967 15252
~g(gebi~m ~21mQni2 Harpacticoida
52 3
1000 200
44647 2576
25212 5795
2ampQ11Q1202 ampS02Qg~2i2 Chironomid larvae
18 10
700 700
15455 8586
13904 701 0
Mean number of organi$mssample 667 Standard deviation IBB
H ean nurn b er 1 20 f organIsms m 572686 Standard deviation 161750
H = 1 99 SD= 065 SR= 090 J= 060
A-31
STATION 58 Date 17 July 1984 Depth 55 AI
Salinity (bottom) 00 ppt Temperature (bottom) 197 C No of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nellatoda 173 1000 14853B 66390 Turbellaria 1 100 859 271 5 ~~~n~hu ini~QA Oligochaeta
1 46
100 1000
859 39496
2715 26293
~gipoundQy~~ygl2 in~rJg~i~ b1nQglYRnY~ Yi( Bivalvia
6 2 1
400 200 100
5152 1717 859
8295 3620 271 5
ei~ IDnH~n~i~ 2 200 171 7 3620 Ostracoda 1 100 959 271 5 biIDQHlh~( Spa ~Q(QRbim ~21Qnisect Diptera pupae
1 94
1
100 1000 100
859 80708
859
2715 35332 2715
Heleidae 1arvae 5 500 4293 4525 Chironomid larvae 1 100 859 2715
Mean number of organismssample 335 Standard deviatiDn 113
Mean number of organismsRI2 287631 Standard deviation 97413
H= 1 86 SO= 064 SR= 155 J= 049
A-32
STATION 55 Date 17 July 1984 Depth 18 m Sali nity (bottom) 00 ppt TeAlperature (bottom) 199 C No of samples 10
Frequency Density (nom2 ) occurrence
Taxa (X) x S D
Nematoda 61 1000 52375 33972 Turbellaria 1 100 859 2715 Oligochaeta 24 900 20606 11590 ~~i2QY~k~~1 iOi[2 bimDQ~xlb~r sp ~Q[QQhi~ sectgni~ Chironomid larvae
3 1
38 3
200 100
1000 300
2576 859
32627 2576
5795 2715
19326 4147
Mean number of organismssample 131 standard deviation 54
M b f 2ean num er 0 organIsms 112477 Standard deviation 46757
H= 184 SD= 066 SR= 085 J= 065
bull
A-33
STATION 45 Date 1 August 1984 Depth 58 m Sal i nity (bottoll) 03 ppt Temperature (bottom) 203 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa nUllber (X) X SD
Nematoda 145 1000 124417 52344 Turbellaria 1 100 859 2715 Mmth~sect iHpoundQ~ Q~~Qi ilQ[i9Oligochaeta
5 3
196
500 300
1000
4293 2576
168286
4525 4147
91064 ~igQYsect~~li int9i Ostracoda
2 3
100 300
171 7 2576
5430 4147
bimnQpoundtl sp ~Q[Q2hiY sectlQni~
240 6
1000 600
206064 5152
73526 4434
sectpoundQtQl poundngnai~Helei dae larvae
1862 1
1000 100
1598713 859
966134 271 ~
Mean number of organismssample 2464 Standard deviation 1156
211 ean num ber 0 f organIsms II 2115590 Standard deviation 992518
H= 124 SD= 041 SR= 089 J= 036
A-34
STATION 1S Date 1 August 1984 Depth 24 II
Salinity (bottom) 00 ppt Temperature (bottom) 198 C No of samp I es 10
Frequency Density (nom2) occurrence ---------------- shy
Taxa (X) X S D
Nuertea 1 100 859 2715 Nellatolllorpha 1 100 859 2715 Nematoda 248 1000 212933 108288 Turbellaria 4 400 3434 4434 ~untb~la Hli~g Oligochaeta
4 206
400 1000
3434 176872
4434 75309
~~igQYli~dli i[t~(gi~ ~QtQpound l binQ~ybt2 sp ~2l~bi Q[i ~2tlgtQ(ila tirisect sectpoundQtel poundl9lla Chironomid larvae
10 1
20 205
1 574
9
500 100 800
1000 100
1000 400
8586 859
17172 176013
859 492836
7727
10709 271 5
14021 48104
271 5 150531
13696
Mean number of organismssample 1284 Standard deviation 290
M b f I 2ean nurn er 0 organIsms III 1102442 Standard deviation 2488B5
H= 211 SD= 071 SR= 1 16 J= 057
A-35
STATION 58 Date 1 August 1984 Depth 55 m Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samp 1es 10
Frequency Densi ty _ ltnom2 ) Total occurrence
Taxa number (7) X SD
Nemertea 1 100 859 2715 Nematoda 22 900 18889 15036 Turbellaria 1 100 859 2715 Oligochaeta 19 700 16313 17385 biiQQgl~QhY~ YiCg~~ 2 200 171 7 3620 ~Q[~i~~l~ m2nil~n2i2 ~Q[QehiYm ~lmQni2
4 164
300 1000
3434 140810
6003 103048
Heleidae larvae 8 500 6869 8868
Mean number of organismssample 221 Standard deviation 111
I 2Mean num ber 0 f organIsms m 189751 Standard deviation 95391
H = L 37 SD= 043 SR= 090 J= 046
A-36
STATION 55 Date 1 August 1984 Depth 15 m Salinity (bottoll) 01 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (i ) X SD
Nemertea 1 100 859 2715 Neutoda 122 1000 104749 7394B Turbellaria 4 300 3434 6003 ~~~~~nt~ secte~poundQa~ Oligochaeta
1 118
100 1000
859 101315
2715 61223
~giQgY~k~~l iot~[m~Qi btbQg~2b~ Y[O ~grQipound~ ~nl~ni b~ngpound~tb~[ Spa
3 1 5 1
200 100 500 100
2576 859
4293 859
5795 2715 4525 2715
~Q[QebiYm ~mQoi sect~QttQ~ ~OQOi Heleidae larvae
42 2 2
800 200 100
36061 171 7 171 7
21341 3620 5430
Chironomid larvae 4 400 3434 4434
Mean number of organismssapIe 306 Standard deviation 169
M b f I 2ean nurn er 0 organIsms m 262732 Standard deviation 145101
H = 198 SD= 067 SR= 1 45 J= 054
A-37
~-- --------------~~-------------
STATION 45 Date 17 August 1984 Depth 61 1
Salinity (bottom) 10 ppt Temperature (bottom) 210 C No of samp 1es 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nematoda 240 1000 206064 130213 ~~h~sect limQ tjQ~~Hi~ fQ[i~~ Oligochaeta
31 2
245
400 100
1000
26617 1717
210357
75228 5430
121374 babgglYQbl~ Yi[~sect 1 100 859 2715 Ostracoda 1 100 859 271 5 biQ~xtb~[ Spa ~~Q~~isect ~[pound~Qisect ~Qgebi HQOi
333 2
143
1000 200
1000
28591 4 171 7
1227BO
106553 3620
106860 sectpoundQUg~ poundg~nsectisect 1738 1000 1492247 68441 7
Mean number of organismssample 2736 Standard deviation 944
M b f I 2ean num er 0 organlslls m 2349130 Standard deviation 810600
H= 172 SD= 056 SR= 079 J= 052
A-38
STATION 18 Date 17 August 1984 Depth 27 III
Sal i ni ty (botto) 01 ppt Temperature (bottom) 214 C No of samples 10
Frequency Density (nom 2 ) occurrence
Taxa (X) X SD
Nematoda 186 1000 159700 62468 ~tgt SPa 2 100 171 7 5430 Turbellaria 8 400 6869 8868 ~~ntbg2 imnipoundQ 12 700 10303 11304 Oligochaeta 283 1000 242984 90509 ~~iQQY~~Y~lls inlgtmggisBivalvia
4 1
400 100
3434 859
4434 271 5
~Qt~i~Y nilnsectisectbimnQpoundttbg[s SPa ~QtQQbi~ islmQDi2
1 17
286
100 900
1000
859 14596
245560
271 5 10747 83461
sectpoundetteln poundDsggnsectisect Chironomid larvae
526 4
1000 3Q0
451624 3434
179610 6003
Mean number of organismssapIe 1330 Standard deviation 162
Mean nurn ber I 20 f organIsms m 1141938 Standard deviation 139389
H= 214 SD= 073 SR= 1 06 J= 060
A-39
STATION 58 Date 17 August 1984 Depth 55 II
Salinity (bottom) 01 ppt Temperature (bottom) 220 C ND of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (7) x S D
Nematoda 68 1000 58385 27689 Turbellar i a 4 200 3434 8295 Oligochaeta 19 800 16313 13084 ~~i~Q~k~~l~ in~~[m~i bitUQ9Y2bYa Yi[~na Bivalvia
3 3 4
300 300 300
2576 2576 3434
4147 4147 6003
gQ[QipoundYl~ mnilDa 1 100 859 2715 binQpoundY~[ sp gQ[Q2UY a~mgnia sect~Qtgl~n ~n~~ni
2 338
6
100 1000 400
171 7 290207
5152
5430 56636 7240
Mean number of organismssample 448 Standard deviation 72
W b f 2lean num er 0 organlsms II 384653 Standard deviation 61988
H = 1 27 SD= 041 SR= 1 02 J= 038
A-40
STATION 55 Date 17 August 1984 Depth 18 m Salinity (bottom) 00 ppt Temperature (bottol) 223 C No of samples 10
Frequency Density (nom 2 ) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 291 1000 249853 118104 Turbellaria 1 100 859 2715 M~ntb~ mni~Q Oligochaeta
1 47
100 1000
859 40354
2715 28347
~~iQQ~sectkY~ll int~[m~gi bitbQQ1YSDY Yi(gn Bivalvia
25 12
6
900 500 400
21465 10303 5152
1231 0 18459 7240
~Q~2ipoundY mnil~ni Ostracoda
11 8
400 600
9445 6869
12442 6773
bmnQpoundYb~r~ SPa 52 1000 44647 19746 ~QrQsbY lmgnisectsQiielo snQ~ni~ Chironomid larvae
43 5
15
1000 400 BOO
36920 4293
12879
21436 6071 8344
Mean number of organismssample 517 Standard deviation 174
M b f I 2ean num er 0 organlsms m 443896 Standard deviation 149431
W = 228 SD= 065 SR= 1 33 J= 062
A-41
STATION 45 Date 29 August 1984 Depth 55 III
Salinity (bottom) 07 ppt Temperature (bottom) 199 C No of samples 10
Frequency Density (noI 2) Total occurrence
Taxa number (X) X SD
Nematoda 192 1000 164851 98380 ~sntbsect limnipoundQlDligochaeta
2 198
200 1000
171 7 170003
3620 67339
~Q[eipoundYls msniln~isect Ostracoda
1 4
100 400
859 3434
2715 4434
bimnQpoundytb[s Spa gQ[Qeniy sect21QOi~ sectpoundQttQlsO poundsOsggOi
164 87
2468
1000 1000 1000
140810 74698
2119025
39283 39460
840890
Mean number of organismssample 311 6 Standard deviation 101 1
ill b f 2nean nUll er 0 organIsms 2675398 Standard deviation 8682B8
W= 116 SD= 036 SR= 060 J= 039
A-42
STATION 18 Date 29 August 1984 Depth 30 bull Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samples 10
Total Frequency occurrence
Densi ty 2
(nom )
Taxa number (~ ) x S D
Nematoda 150 1000 128790 28905 Turbellaria 7 400 6010 9096 ~nh imni~Qj Oligochaeta ~~i~2Y~k~~1 ini~CIDgii bih2g~Qb~ Yi(~U2 Bivalvi a
B 145
1 1 2
600 1000
100 100 200
6869 124497
859 859
171 7
677 3 84732
271S 2715 3620
~Q[Qi~yli miDllgni bimn2pound~ih~C sp ~QtQehiY imQUia Harpacticoida
7 7
265 1
500 300
1000 100
6010 601 0
227529 859
8145 10747
139462 2715
sect~QtiQDi ~Q~Q~i~ Chironomid larvae
2471 2
1000 200
2121601 171 7
1063112 3620
Mean number of organismssample 3067 Standard deviation 121 9
2Mean number 0 f organIsms m 2633326 standard deviation 1046718
H = 1 09 SD= 034 SR= 1 04 J= 029
A-43
STATION 58 Date 29 August 1984 Depth 55 111
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (noI 2 ) Total occurrence -----------------
Taxa nUllber (X) X SD
Nemertea 4 400 3434 4434 Nuatoda 64 1000 54950 25016 Turbellaria 9 400 7727 11047 ~Hl~b limli~Q19 Oligochaeta
1 37
100 1000
859 31769
2715 19006
i~Qyh il(~~ bHtlQSlheln Yl Bivalvia
4 4
20
200 300 400
3434 3434
17172
8215 6003
26541 ~e(ijY l bQ~dlH sp
26 1
700 100
22324 859
25662 2715
~Q[QQhil iQ sectjgUell HD Heleidae larvae
418 20
1
1000 800 100
358895 17172
859
129443 12799 271 5
Mean number of organismssample 609 Standard deviation 175
nean num b er 0 f organIsms 1 111 2 522887 Standard deviation 150164
H= 176 SD= 051 SR= 1 30 J= 047
A-44
I I
I
I
STATION SS
Date 29 August 1984 Depth 21 1
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (no2) Total occurrence
Taxa nUllber (X) x S D
Nematoda ISO 1000 128790 37969 Turbellaria 1 100 859 271 5 Oligochaeta 48 1000 41213 16088 ~i~g~sect~~l iQ~~mgi bi~QQg~gb~sect ~i~nsect
10 14
600 600
eSB6 12020
9050 14137
Bivalvia 4 200 3434 7240 ~Q[Q~Yl niQaa Ostracoda
15 7
700 SOO
12879 6010
15806 7069
bmQg~~~b~ SPa 14 800 12020 8295 ~g[gaby mgni sect~g~~Qn ~ngnai Chironomid larvae
IB4 25 9
1000 900 700
157982 21465
7727
35563 16810 6335shy
Mean number of organismssample 481 Standard deviation B6
2Mean number 0 f organlsms m 412987 Standard deviation 74131
H= 24S SD= 074 SR= 1 23 J= 068
A-45
STATION 45 Date 14 September 1984 Depth 61 11
Salinity (bottom) 03 ppt Temperature (bottom) IB4 C No of samples 10
---------------------------------~----------------------------------------
Taxa TotalnUlllDer
Frequency occ~~~ence
Density (no 2) -----X-------sect7B
Nematoda 189 1000 162275 85233 t1tQ SPa
Turbellaria 2 2
200 100
171 7 171 7
3620 5430
~~~nIng limoifQl t1QQQDi~ flQriQ Oligochaeta
5 19
142
400 800
1000
4293 1631 3
121921
6071 12442 30504
~QQifYl mDl~D bimoQpoundt1hgr Spa Cumacea
19 184
2
800 1000 200
1631 3 157982
171 7
130B4 69541 3620
~Q[QnniYm ~~lmQDi Harpacticoida
118 1
1000 100
10131 5 B59
43367 2715
sectfQIIQD fOQgO Chironomid larvae
1780 1
1000 100
1528308 859
673586 2715
Mean number of organismssample 2464 Standard deviation 874
M ean num b er f 20 organlsms 2115590 Standard deviation 750305
H= 151 SD= 046 SR= 1 07 J= 041
A-46
STATION 18 Date 14 September 1984 Depth 21 III
Salinity (bottom) 01 ppt Temperature (botto) 182 C No of samples 10
Frequency DenSity (nom 2 ) Total occurrence ---------------- shy
Taxa nUlDber (i) X SD
Nemertea 1 100 859 271 5 Nematoda 186 1000 159700 44925 Turbellaria 16 400 13738 20717 ~~Dth~~ limni~Ql Oligochaeta
13 55
700 900
11162 47223
9096 30085
~Q~ei~Yl nil~Qi~ 17 900 14596 7069 bimDg~lbg[ Spa b 500 5152 6003 ~Q[Q2niY ~lgQi~ Harpacti coi da
562 2
1000 200
482533 171 7
136766 3620
sectpoundQttQ~Q~ ~n~ni 791 1000 679153 324290
Mean number of organismssample 1649 Standard deviation 447
I 211ean nUll ber 0 f organIsms I 1415831 Standard deviation 384136
H= 179 SD= 064 SR= 084 J= 054
A-47
STATION 58 Date 14 September 1984 Depth 58 III
Salinity (bottom) 01 ppt Temperature (bottom) 191 C No of sampl es 10
-------------------------------------------~------------------------------Frequency Density (nom 2 )
Total occurrence Taxa number eX) X SD
Nemertea 1 100 859 2715 Nematoda 55 1000 47223 18658 Turbellaria 10 500 8586 11448
1 100 859 2715 Oligochaeta 41 1000 35203 17850 ~~iQQ~~gll iu1g[m~i ~Q[Q~Yl nilD bimnQ~Y~h[ Spa ~Q[Q~hiYm lmgui sectpoundQilg1D poundU2D Chironomid larvae
4 10
2 277
23 4
100 500 200
1000 700 300
3434 8586 171 7
237832 19748 3434
10861 11448 3620
50561 21051 6003
Mean number of organismssample 428 Standard deviation 51
M b f 2ean num er 0 organIsms III 367481 Standard deviation 43743
H= 179 SD= 055 SR= 114 J= 052
A-48
I I
STATION SS Date 14 September 1984 Depth 21 II
Salinity (bottom) 01 ppt Temperature (bottom) 190 C No of samples 10
--------------------------------------------------------------------~-----
Frequency Density (no1I2) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 102 1000 87577 39200 Oligochaeta 34 700 29192 31142 ~iQ2Y~y1 int(mgi~ bithQgl~en~ Yi(gDsect ~Q(~i~Y m~DilgDsecti~ bimDQamp~1h(sect sp ~2(QQhiY slmQD 2poundQiiQlsD ~sD~g~nsecti Chironomid larvae
36 18 16 17
100 16
3
1000 600 800 700
1000 800 300
30910 15455 13738 14596 85860 13738 2576
157BO 20953 10078 14621 32126 10861 4147
Mean number of organismssample 342 Standard deviation 97
2Mean nUllber 0 f organlsms m 293641 Standard deviation 83617
H= 262 SD= 079 SR= 095 J= 083
A-49
Appendix B--Sediment particle size and organic content of the Cathlamet Bay
benthic invertebrate sites 13 March through 14 September
1984
iii
1
Station 18a 48 54 57
Survey 1 1 1 1
Month March March March March
Day 13 13 13 13
Particle size (mm) Phib Percent by weight
gt 40 -2 000 000 000
20- 40 -1 000 000 000
10- 20 0 000 009 000
05- 10 1 018 1079 032
025- 050 2 545 7583 2468
0125- 025 3 8731 1225 6783
00625-0125 4 491 037 657
lt0625 (5-12) 216 067 060
Organic Content 160 116 128
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
b Phi= -log2(sediment particle diameter in mm)
B-1
Station 18a 48 54 57
Survey 2 2 2 2
Month April April April April
Day 5 5 5 5
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 003 093 000
05shy 10 1 005 31 75 023
025shy 050 2 087 5904 2368
0125- 025 3 6316 750 7155
00625-0125 4 3056 026 427
lt0625 (5-12) 533 052 028
Organic Content 081 077 065
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-2
Station 45 55 58
Survey 3 3 3 3
Month April April April April
Day 18 18 18 18
Particle size (mm)
gt 40
Phi
-2
Percent by weight
000 000 000
20shy 40 -1 000 000 000
10shy 20 0 005 009 004
05shy 10 1 010 027 013
025shy 050 2 015 095 225
0125- 025 3 097 536 6111
00625-0125 4 453 2821 2205
lt0625 (5-12) 9420 6511 1442
Organic Content 31 42 14
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-3
Station 18a 45 55 58
Survey 4 4 4 4
Month May May May May
Day 4 4 4 4
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 021
05shy 10 1 000 065 063
025shy 050 2 012 370 230
0125- 025 3 091 4099 4696
00625-0125 4 322 3650 3052
lt0625 (5-12) 9575 1810 1939
Organic Content 330 180 160
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-4
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
5
May
17
000
000
005
016
217
5862
2729
1170
100
45 55 58
5 5 5
May May May
17 17 17
Percent by weight
000 000
000 000
005 008
113 031
325 274
1903 5613
2784 2401
4870 1672
240 110
000
000
000
010
020
079
397
9494
390
B-5
Station 18al 45 55 58
Survey 6 6 6 6
Month June June June June
Day 6 6 6 6
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 020
05shy 10 1 005 051 027
025shy 050 2 005 301 1 79
0125- 025 3 074 3189 5404
00625-0125 4 599 4118 2885
lt0625 (5-12) 9317 2332 1485
Organic Content 340 240 150
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-6
Station
Survey
Month
Day
Particle size Cmm) Phi
gt 40 -2
20shy 40 -1
10shy 20 a
05shy 10 1
025shy 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
7
June
18
000
000
005
029
138
3917
4143
1768
180
45
7
June
18
55 58
7 7
June June
18 18
Percent by weight
000
000
000
010
020
080
427
9464
310
000 000
000 000
000 007
011 022
057 190
957 5286
3023 2642
5957 1853
1 70 110
B-7
Station 18al 45 55 58
Survey 8 8 8 8
Month July July July July
Day 2 2 2 2
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 006 002 006
05shy 10 1 006 0l3 023
025shy 050 2 017 088 171
0125- 025 3 074 2712 5365
00625-0125 4 552 3892 3081
lt0625 (5-12) 9345 3294 l354
Organic Content 410 210 160
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-8
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
9
July
17
000
000
003
013
130
4294
4434
1127
130
45
9
July
17
Percent
000
000
000
006
012
051
046
9885
290
55
9
July
17
by weight
000
000
019
048
091
628
3616
5597
030
58
9
July
17
000
000
004
022
158
5017
3148
1650
140
B-9
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18al
10
August
1
45
10
August
1
55
10
August
1
58
10
August
1
Percent by weight
000 000
000 004
001 004
009 018
018 088
098 306
049 2510
9824 7070
000
005
045
763
3604
4495
932
156
100 190 060
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-10
Station 18 45 55 58
Survey 11 11 11 11
Month August August August August
Day 17 17 17 17
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000 000
20- 40 -1 005 000 000 000
10- 20 0 021 003 000 210
05- 10 1 064 009 000 159
025- 050 2 226 027 045 2656
0125- 025 3 3259 131 712 3719
00625-0125 4 4327 195 1737 1159
lt0625 (5-12) 2098 9635 7506 2097
Organic Content 210 300 160 100
Ii I
B-11
Station
Survey
Month
Day
Particle size (mm) Phi
gt40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
12
August
29
000
000
012
046
186
3465
4498
17 93
241
45
12
August
29
55 58
12 12
August August
29 29
Percent by weight
000
000
002
009
026
118
189
9656
540
000 000
000 000
003 011
011 028
055 1013
859 5033
1596 1827
7476 2089
1 70 120
B-12
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
_-------------------- shy
B-13
INTRODUCTION
Interest has been shown in the possibility of a deep draft navigational
channel from the mouth of the Col umbia River to either Astoria or Tongue
Point Oregon However deepening the channel may increase the amount and
the duration of saltwater intrusions into Cathlamet Bay Cathlamet Bay is
presently a freshwater embayment saline water only enters the bay when
river flows are reduced (primarily summer and fall)
Cathlamet Bay supports large populations of invertebrates including
the gammarid amphipod Corophium salmonis an important food for many fish
species in the estuary (McCabe et al 1983) Many fishes including
juvenile salmonids feed in Cathlamet Bay It is possible that alterations
of salinity regimes in Cathlamet Bay due to channel deepening would reduce
Corophium and other invertebrate populations subsequently adversely
affecting the use of the bay by feeding fishes
In 1984 the Portland District of the Us Army Corps of Engineers
contracted with the National Marine Fisheries Service in a cooperative
effort to provide additional biological information on the existing benthic
invertebrate and fish communities in Cathlamet Bay The research findings
pertaining to the benthic invertebrate data are being presented in this data
report the fish data are presented in a separate report
METHODS
Thirteen benthic sampling surveys were conducted at approximately 2shy
week interval s from 13 March through 14 September 1984 Initial benthic
invertebrate and sediment samples were collected at Stations 18 48 54 and
57 (Fig 1 Table 1) Due to extremely low benthic invertebrate densities
at Stations 48 54 and 57 these stations were replaced with nearby
1
58 amp
c ~
lt ~ 57 57 - +$ ampmiddotJ~EE~L
IS Yamp1 sf~18 l) bull bull t - amp ~ ~~
$+ ~BAYCATHLAMET
~~
OREGON
1N
5 o KM
~GRAYS BAY WASHINGTONcgt
~ ~
amp - Core sampler
$ - Purse seine +- Trawl
I ) o MI
N
Figure l--Locations and station numbers of fish and invertebrate sampling sites in
Cathlamet Bay
Table 1--Geographic locations of the benthic sampling stations in
Cathlamet Bay
Geographic location Station (Latitude and Longitude) Site Description
18 46 1234 N 123 4252 W Adjacent to Green Dolphin 3 at Wend of North Channel
45 46 1128 N 123 4414 W Center of old Marishytime Basin 600 m N of Corps of Enginshyeers dock
48a 46 1053 N 123 4409 W Adjacent to Can 7 off SW end of Lois Island in South Channel
46 1053 N 123 38 41 W Adj acent to Svensen Island piling jetty W of Red Dolphin 12A
55 46 11 17 N 123 3800 W Adjacent to Red Dolphin 14 at SW end of Minaker Island
46 1300 N 123 3809 W 50 m N of Seal Island in Woody Island Channel
58 46 1354 N 123 4010 W Adjacent to Can 5 in Woody Island Channel [after can was moved (18 July) approxshyimately 300 m Wof can]
a Stations which were replaced during Survey 3
3
stations known to have higher densities --45 55 and 58 respectively
after Survey 2 Higher benthic invertebrate densities would provide better
statistically identifiable relationships between densities and salinity As
a result of the changes in sampling stations only samples from Station 18
were analyzed for Survey 2 (5 April 1984)
Benthic samples were collected by SCUBA divers using a coring device
The sampler was constructed of 385-cm (inside diameter) PVC pipe which
penetrated 15 cm into the sediment thereby collecting a 924 cm3 sediment
sample (Fig 2) The coring device was operated as follows 1) the sampler
was filled with water on the boat to aid in diver descent 2) on the bottom
the diver removed the bottom cap and pushed the sampler into the sediment
until it stopped at the plexiglass plate (15 cm) and 3) the diver placed
his thumb on the top opening (forming a suction) removed the coring device
from the sediment and replaced the bottom cap All samples were taken
within the confines of a square meter aluminum irame
On the boat samples were washed through a 025-mm mesh screen placed
into labeled jars and fixed and preserved in a 4 formaldehyde solution
that contained rose bengal (a protein stain) At the laboratory samples
were washed of the formaldehyde sol ution and sorted with the aid of a 15X
dissecting microscope Invertebrates were identified to the lowest
practical taxon and counted
Initially 16 benthic cores were taken 15 to be used for benthic
invertebrate analysis and 1 for sediment analysis Subsequent statistical
analysis revealed 10 benthic invertebrate cores were sufficient to
adequately describe the benthic communities So after Survey 4
(1 August 1984) 11 benthic cores were collected per station
4
Opening
Top cap
Plexiglass disc c====tt====tt===J
PVC tubing
Bottom cap
1Scm String
Figure 2--Description of PVC benthic invertebrate sampling device
5
Station number date depth bottom salinity and temperature (taken
with a Beckman RS5-3 salinometer and probe1) sample size total numbers
frequency of occurrence and mean number 1m2 are presented in the Results
Besides the above H Shannon-Weaver diversity function (Shannon and Weaver
1963) SD Simpson diversity value (Simpson 1949) SR species richness
(Margalef 1958) and J species evenness value (Pielou 1966) were
calculated The following formulas were used s
1) H= - L Pi 10g2 Pii=1
where Pi= the proportion of individuals belonging to the ith
species
S = number of species s
2) SD= 1 - L Pi2 i=1
where Pi= the proporti on of individual s be longing to the i I th
species
3) SR= (S - l)loge N
where S= the number of species at the station
N= the total number of individuals at the station
4) J= H Ilog2 S
where H= the Shannon-Weaver diversity value
S = the number of species
Sediments were analyzed by seiving those particles lt 00625 mm were
considered the silt-clay fraction Organic content was determined by
burning at 550degC for 24 h
II Reference to trade names does not imply endorsement by National Marine Fisheries Service NOAA
6
RESULTS
Physical and biological data are presented by station in Appendix A A
list of the benthic invertebrate taxa identified during the survey are
presented in Table 1 Appendix B presents the sediment analysis
DISCUSSION
Although the purpose of this study was to obtain base line information
prior to modification of the ship navigational channel caution must be used
in interpreting the data First the MOBILOIL oil spill on 19 March 1984
may have affected the local benthic invertebrate biota Oil started to
occur in the benthic samples on the third survey (18 April 1984) and
continued until the end of the study (14 September 1984) Al though some
stations had more oil than others effects on the invertebrates were not
obvious Secondly year to year variations in benthic invertebrate species
and densities occur in the marine environment (Gray and Christie 1983)
Whether the benthic infauna in Cathlamet Bay varies cyclically is unknown
The long term stability or cycles need to be determined before changes of
the benthic infauna can be attributed to any habitat modification or
dredging proj ect
Salinity is considered to be the most important factor controlling the
distribution of estuarine animals (Kinne 1966) Since we performed our data
collections primarily at low tide the given salinity values must be
considered low values Chapman and Brinkhurst (1981) showed that seasonal
variations of benthic invertebrates in the Fraser River estuary were
correl ated with salini ty One common freshwater oligochaete species in
their study Limnodrilus hoffmeisteri also occurs in Cathlamet Bay Adult
hoffmeisteri can tolerate salinities up to 10 ppt and immatures 14 to
7
Table 1--List of invertebrate taxa found at benthic invertebrate sites
located in Cathlamet Bay Oregon March through September 1984
Coelenterata Hydra sp
Turbellaria Nemertea Nematoda Nematomorpha Oligochaeta
Vejdovskyella intermedia Limnodrilus hoffmeisteri Ilydrilus frantzi
Polychaeta Neanthes limnicola Hobsonia florida Manyunkia speciosa
Gastropoda Lithoglyphys (=Fluminicola)
Bivalvia virens
Corbicula manilensis Ostracoda
Limnocythera sp Mysidacea
Neomysis mercedis Cumacea Amphipoda
Eogammarus spp Eogammarus confervicolus Corophium salmonis Corophium spinicorne Pontoporeia hoyi Eohaustorius estuaris
Isopoda Saduria entomon
Harpacticoida Scottolana canadensis
Insecta Diptera adult Diptera pupae Heleidae larvae Chironomidae larvae Chironomidae pupae Trichoptera larvae Hymenoptera Collembola
Hydracarina
Occurrence not quantified
8
15 ppt (Chapman and Brinkhurst 1980) This species appears to be a useful
salinity indicator and future benthic work should identify and enumerate
this species Due to time and taxonomic expertise requirements only the
oligochaete species Vejdovskyella intermedia was enumerated Salinity
tolerances of this species are unknown
Since intersti tial salinities do not vary dielly as do salini ties in
the water column (Sanders et al 1965) interstitial salinities should have
been measured Al though many infauna species may be exposed to overlying
water because of activity andor tubes (exCorophium spp) many benthic
invertebrates are dependent on interstitial salinity levels Measurements
of interstitial salinities are necesssary to determine benthic infauna
sensitivity to salinity intrusion
Finally there appeared to be a large amount of within station
variability in the sediment texture particularly at Stations 55 and 58
The sediment at Station 55 ranged from a very fine sand to almost all clay
The sediment texture variability at Station 58 was a result of the uS
Coast Guard moving Can 5 to a new location forcing us to estimate the
previous location of our station
ACKNOWLEDGMENTS
We wish to thank Maurice Laird Nick Zorich Larry Davis Roy Pettit
Edward Koller and David Miller for their assistance in developing the
sampling device and collecting the samples We express special thanks to
Sandy Lipovsky Thomas Moylan and Susan Newhouse for helping sort and
identify the invertebrates
9
LITERATURE CITED
Chapman P M and R O Brinkhurst
1980 Salinity tolerance of some selected aquatic oligochaetes Internat
Rev der Gesamten Hydrobio1gie 65499-505
Chapman P M and R O Brinkhurst
1981 Seasonal changes in interstitial salinities and seasonal movements
of subtidal benthic invertebrates in the Fraser River estuary BC Est
Coast Shelf Sci 1249-66
Gray J S and H Christie
1983 Predicting long-term changes in marine benthic communities Mar
Ecol Prog Sere 1387-94
Kinne O
1966 Physiological aspects of animal life in estuaries with special
reference to salinity Neth J of Sea Res 3 227-244
Margalef R
1958 Information theory in ecology Gen Syst 336-71
McCabe G T Jr W D Muir R L Emmett and J T Durkin
1983 Interrelationships between juvenile sa1monids and nonsalmonid fish
in thl Columbia River estuary Fish Bu11U S 81(4)815-826
Pie10u E L
1966 The measurement of diversity in different types of biological
collections J Theor BioI 13131-144
Sanders H L P C Mange1sdorf and G R Hampson
1965 Salinity and faunal distribution in the Pocasset River
Massachusetts Limno Ocean 10216-229
Shannon L E and W Weaver
1963 The mathematical theory of communication Univ of Illinois Press
Urbana Ill
10
Simpson E H
1949 Measurement of diversity Nature 163688
11
APPENDIX A--Descriptive summary of benthic invertebrate data collected in
Cathlamet Bay Oregon during March through September 1984
STATION 18 Date 13 March 1984 Depth 46 m Salinity (bottom) 11 ppt Temperature (bottom) 67 C No of samples 15
Frequency Density (nom 2 ) Total occurrence
Taxa number (7) X SD
Nemertea 2 67 1145 4434 Nematoda 134 1000 76702 33169 Turbellaria 22 667 12593 15854 ~~n~b~~ imnpoundQ 31 Oligochaeta 486
933 17744 1468 1 100() 278186 138779
~QtQif~12 mnil~nsectisect 24 Ostracoda 39
933 13738 8462 800 22324 17715
~Q[QQbiYm ~lmQni~ 74 867 42358 38B70 EQntQIH~i2 Qyi 1 EQri gnQQn 1 Harpacticoida 7
67 572 2217 67 572 221 7
333 4007 7159 Insecta 2 67 1145 4434 Chironomid larvae 20 667 1144 B 10090 Collembola 95 867 54378 82588 Hydracarina 1 67 572 221 7
Mean number of organismssample 626 Standard deviation 19 1
M ean num b er 0 f 2organIsms III 537484 Standard deviation 163579
H= 237 so= 069 SR= 1 42 J= 061
A-l
STATION 48 Date 13 March 1984 Depth 107 m Salinity (bottom) 05 ppt Temperature (bottom) bB C No of sampl es 15
Frequency Densi ty (nom 2 ) Total occurrence
Taxa number (7) X SD
Nemertea 31 6b7 17744 1849 1 Nematoda 38 667 21751 22685 Oligochaeta 4 133 2290 6859 ~QQpound12 2nil~nsectisect 31 Ostracoda 1
667 17744 29648 67 572 221 7
~Q9~~[~ spp 1 ~Q[Q2l ~~lQnisect 1 ~Q2sectiQisect sectisect 4 Harpacticoida 1
67 572 2217 67 572 221 7
200 2290 5097 67 572 221 7
Insecta 2 133 1145 3021 Diptera adult 1 67 572 2217 Collembola 24 467 13738 30923
Mean number of organismssample 93 Standard deviation 59
Mean number of organismsm2 795b4 Standard deviation 50740
H= 255 SD= 079 SR= 1 55 J= 071
A-2
STATION 54 Date 14 March 1984 Depth 177 m Salinity (bottom) 00 ppt Temperature (bottom) 66 C No of samples 15
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nemertea 47 1000 26903 14096 Nematoda 7 267 4007 9102 Turbellaria 9 333 5152 1114B Oligochaeta 11 333 6296 10989 Gastropoda 1 67 572 2217 ~Q(Qi~Yl mnil~n2i~ Ostracoda
199 3
1000 200
11390B 171 7
97165 3555
gQ[Qehiy sectlmQnisect Harpacticoida
3 1
200 67
171 7 572
3555 221 7
Heleidae larvae 29 867 16600 10989 Chironomid larvae 2 133 1145 3021 Collembola 2 67 1145 4434
Mean number of organismssample 209 Standard deviation 103
2Mean number 0 f organIsms m 179734 Standard deviation 88247
H = 1 86 SD= 056 SR= 1 33 J= 052
A-3
STATION 57 Date 13 March 1984 Depth 91 m Salinity (bottom) 00 ppt Temperature (bottom) 63 C No of sampl es 15
Frequency Densi ty (no 81 2) Total occurrence
Taxa number (X) X SD
Nemertea 27 667 15455 13459 Nematoda 8 400 4579 6381 Turbellaria 4 200 2290 5097 Oligochaeta 8 400 4579 6381 ~g[gipound~l mnilui Ostracoda
1 1
67 67
572 572
2217 2217
~Qgml[a spp 1 67 572 2217 ~Q[Qeni~m lmQnisect Harpacticoida
2 1
133 67
1145 572
3021 221 7
Insecta 3 67 171 7 b651 Chironomid larvae 1 b7 572 221 7 Collembola 37 400 21179 65700 Hydracarina 1 67 572 221 7
Mean number of organismssample 63 Standard deviation 82
Mean number of organismsm2 54378 Standard deviation 70029
H= 253 SD= 075 SR= 1 83 J= 068
A-4
STATION 18 Date 5 April 1984 Depth 30 II
Salinity (bottoll) 00 ppt Temperature (bottom) 90 C No of samples 15
Frequency Densi ty (no1I 2) Total occurrence
Taxa number (i ) If S D
Nemertea 11 bOO 6296 6042 Nematomorpha 2 133 1145 3021 Nuatoda 119 1000 6811 6 50947 Turbellaria 20 600 11448 13640 ~~~nin~sect liIDni~Q12 Oligochaeta
33 481
1000 1000
18889 275324
10364 142326
~Q~Qi~Yl m2nil~ni2 23 600 13165 1371 7 Ostracoda 33 933 18889 10861 gQ(QQrriYID sect2mQnisectHarpacti coi da
38 7
933 133
21751 4007
13329 13328
Chironomid larvae 16 667 9158 8868 ColI embola 1 67 572 2217
Mean number of organismssample 523 Standard deviation 227
M b f 2ean num er 0 organIsms m 448762 Standard deviation 194508
H= 202 SD= 059 SR= 114 J= 0S6
A-5
STATION 45 Date 18 April 1984 Depth 64 III
Salinity (bottom) 00 ppt Temperature (bottom) 95 C No of samples 15
Total Frequency occurrence
Density (noI 2 )
Taxa number (X) X SD
Nematoda 171 1000 97890 92277 tyg~ sp Turbellaria
1 29
67 600
572 16600
221 7 23506
H~nng~ imDi~g tQQsectQl fg~ig Oligochaeta ~Q[Qi~Y2 m2niD~i Ostracodamiddot
9 41
367 42
100
400 1000 1000 800
1000
5152 23469
210071 24041 57240
781 5 13563
100542 19254 43134
~Q[Qeniym amQnisectHarpacticoida Heleidae larvae
37 2049
1
933 1000
67
21179 117284B
572
189B5 616612
221 7 Chironomid larvae 3 200 171 7 3555 Collembola 1 67 572 221 7 Insect parts 1 67 572 221 7
Mean number of organismssample 1901 Standard deviation 864
b f 2nean num er 0 organIsms m 1632485 Standard deviation 741931
H = 1 52 SD= 046 SR= 1 13 J= 040
A-6
STATION 18 Date 18 April 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom) No of samples 15
Frequency Density (nom2) Total occurrence
Taxa nueber (X) x s D
Nemertea 13 533 7441 9663 Nematomorpha 3 200 171 7 3555 Nematoda 195 1000 111618 63675 Turbell ari a 9 467 5152 6326 ~~ni~~ i~ni~Ql~ 30 867 17172 129B1 Oligochaeta 580 1000 331992 108880 ~QC~i~Ml~ m~nil~n~isectOstracoda
28 18
1000 667
16027 10303
11179 10364
~Q[Q~~iYm sect~Qni2 sect~ci~ gniQQnHarpacticoida
105 1
17
1000 67
400
60102 572
9731
25553 2217
19970 Chironollid larvae 16 667 9158 8B6B
Hean number of organismssample 677 Standard deviation 199
M ean num b I 2er 0 f organIsms AI 580986 Standard deviation 171095
w = 202 SD= 062 SR= 1 10 J= 056
95 C
A-7
STATION 58 Date 18 April 1984 Depth 67 m Salinity (bottom) 00 ppt Temperature (botto) No of samples 15
Frequency Density (nom2) Total occurrence
Taxa number (~) X SD
Nemertea 62 933 35489 26338 Nematoda 224 1000 128218 49903 Turbellaria 9 600 5152 4354 ~nt~sect imni~Q Oligochaeta
1 79
67 1000
572 45220
2217 23506
bnQgYRhY~ Yi~~nE ~Q(~i~Y nil~ni Ostracoda
2 10 19
67 533 600
1145 5724
10876
4434 6214
10989 ~Q[QeniY sectQOiHarpacticoida
30 2
B67 133
17172 1145
12142 3021
Heleidae larvae 6 333 3434 5430 Chironomid larvae 9 400 5152 7B1 5 Chironomid pupae 2 133 1145 3021
Mean number of organismssample 303 Standard deviation 94
I 11 ean num ber 0 f organlsms 2 260442 Standard deviation 81043
H= 233 SO= 070 SR= 1 36 J= 063
97 C
A-B
Frequency Density (nolm 2) Total occurrence -----------------
Taxa number (7) X SD
Nemertea 16 467 9158 10989 Nematoda 266 1000 152258 54541 Turbellaria 23 600 13165 15518 ~l~nH ~Q~iQH 2 133 1145 3021 Oligochaeta 181 1000 103604 56532 bi~hQg~Qn~~ ~it~l~ ~QtQifg mli~lsectisectOstracoda
3 59 15
200 1000 733
1717 33772 8586
3555 23054
7256 ~Q[QQhiY HmQtlsect ~Q[QehiYm sect21tlfQ[lg EQlQQQt~i hQ~i
466 3 1
1000 200 67
266738 171 7 572
75094 3555 221 7
Harpacticoida 30 400 17172 40402 Chironomid larvae 10 533 5724 6214
Mean number of organismssa_pIe 717 Standard deviation 143
I 2Mean number 0 f organlsms m 615330 Standard deviation 122532
H= 226 SO= 072 SR= 119 J= 061
STATION 55 Date 18 April 1984 Depth 30 1ft
Salinity (bottom) 00 ppt Temperature (bottom) 93 C No of SaIIples 15
A-9
STATION 45 Date 4 Hay 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 103 C No of samples 10
Frequency Density (noI2) Total occurrence ---------------- shy
Taxa number (Xl X SD
Neutoda 269 1000 230963 167296 Turbellaria 1 100 859 2715 ~u~yuti Q~iQ ~Ub imni~Q
1 2
100 100
859 171 7
2715 5430
j2~Qn flec Oligochaeta
28 169
BOO 1000
24041 145103
19326 74351
~igeYk~ll iulCIDai ~Q(Qi~Y uini Ostracoda
32 4 5
aoo 400
400
27475 3434 4293
22463 4434 6071
biQQ~~tbt sp ~e(QQbYm mQoi sectampQeD ~nQDisect Chironomid larvae
25 2
578 2
900 200
1000 200
21465 1717
496271 171 7
15279 3620
293820 3620
Mean number of organismssample 111 8 Standard deviation 522
11 b f I 2ean num er 0 organIsms m 95991 5 Standard deviation 447842
H= 193 SD= 065 SR= 118 J= 052
A-10
STATION 18 Date 4 Hay 1984 Depth 34 II
Salinity (bottom) 00 ppt Temperature (bottom) 104 C No of saMples 10
Frequency Density (noI 2 ) occurrence ----------------shy
Taxa (X) X SD
Nemertea 10 600 8SB6 10709 Nuatoda 153 1000 131366 47899 Turbellaria 8 600 6869 6773 ~n1b limnpoundQl Oligochaeta
11 147
700 1000
middot9445 126214
9449 6231 7
~i~g~kXl in1(m~i ~g(2iY OiOi Ostracoda
86 4 1
900 300 100
73840 3434 859
61543 6003 2715
bimoQpoundx1b( sp ~2(QQbiYm mgoiDi ptera adult
3 57
3
300 900 300
2576 48940
2576
4147 21815 4147
Chironomid larvae 4 300 3434 6003 Chironomid pupae 1 100 859 2715
Hean nUMber of orQanismssample 489 Standard deviation 160
b f 2nean nUll er 0 organIsms II 418997 Standard deviation 137721
H= 243 SD= 076 SR= 1 34 J= 066
A-l1
STATION 5B Date 4 Hay 1984 Depth 61 bull Salinity (botto~) 00 ppt Temperature (bottom) 110 C No of suples 10
Frequency Density (nom 2) Total occurrence ---------------- shy
Taxa number (X) X SD
Neertn 41 1000 35203 21206 Nematoda 211 1000 181165 53305 Turbellaria 4 200 3434 7240 Oligochaeta 89 1000 76415 32240 ~i~2~~~11~ iU1(~i~bi1begygny YitQ ~e(biYl ~OiDi OstracDda
4 3
20 1
400 200 BOO 100
3434 2576
17172 859
4434 5795
19829 2715
biue~1bt~ sp ~2(egniY Imeoi sectg11g1O OdD Helei dae larvae
5 32
1 1
400 900 100 100
4293 27475
859 859
6071 18010 2715 2715
Chironomid larvae 7 400 6010 9096
Mean number of organismssample 419 Standard deviation 93
b f 2ean nUll er 0 organIsms m 359753 Standard deviation 79875
H= 221 SD= 068 SR= 138 J= 060
A-12
Frequency Density (nolm 2) occurrence -----------------
Taxa (X) X SD
Nemertea 23 900 1974S 15171 Neutollorpha 1 100 859 271 5 Nellatoda 269 1000 230963 69923 Turbellaria 10 600 8586 991 4 ~~xYnki Q~ampiQ 4 300 3434 6003 ~nb limnipoundQl Oligochaeta
1 79
100 1000
859 67829
2715 40363
~i~Q~kXl io[~i biDe9XQDX ~i[~OBi valvi a
11 3 1
800 300 100
9445 2576 859
6335 4147 271 5
~Q[~poundY mnil~n bimoQampXD[ sp ~Q[QabiY lQO Harpacticoida
18 2
159 1
700 200
1000 100
15455 171 7
135659 859
13904 3620
54272 2715
Chironomid larvae 2 200 171 7 3620 Trichoptera larvae 1 100 859 2715
STATION 55 Date 4 May 1984 Depth 21 m Salinity (bottom) 00 ppt Temperature (bottom) 107 C No of suples 10
Mean number of organismssamples 594 Standard deviation 147
Mean number of organismsm2 501422 Standard deviation 126525
H= 219 aD= 069 SR= 1 63 J= 055
A-13
STATION 45 Date 17 May 1984 Depth 61 m Sal i ni ty (bottom) 01 ppt Temperature (bottom) 121 C No of sampl es 10
Frequency Total occurrence
Taxa nUlllber (7)
NelDertea 1 100 859 2715 Nematoda 163 1000 139952 127996 Polychaeta 1 100 859 2715 ~~~n~h~ imni~Qs Hobsonia florida
2 6
200 600
171 7 5152
3620 4434
Oligochaeta 329 1000 282479 13291 8 ~~lQQYsectk~~12 in~~rmQi 57 900 48940 33142 ~Qr~ipound~2 ffi2niDi 6 500 5152 6003 Ostracoda 5 200 4293 10898 bimDg~yth( SPa 13 600 11162 12176 ~Q(Qebi~m sectQDisect Harpacticaida
2 2
200 100
1717 1717
3620 5430
2poundQttQD poundDQDsectisectDiptera adult
296 1
1000 100
254146 859
172633 271 5
Mean number of organismssample 884 Standard deviation 326
b f I 2nean num er 0 organlss m 759002 Standard deviation 280131
H= 209 SD= 071 SR= 1 33 J= 055
A-14
STATION 18 Date 17 May 1984 Depth 30 m Salinity (bottom) 00 ppt Temperature (bottom) 122 C No of samples 12
Frequency Density (nom2) Total occurrence -----------------
Taxa number (X) X SD
Nematoda 50 833 35775 22815 ~ntb limnipoundQl 3 Oligochaeta 97
250 833
2147 69404
3883 48495
~igQ~~k~ intr~ 27 ~QrQipoundY mnin~i~ 5
667 333
19319 3S7S
19068 5740
Ostracoda 1 83 716 2479 bimnQpound~nr sp 5 ~Q(Q~bY ~mQni S4 ~Q(Q~niY ~QinipoundQ(n 3
333 833 250
3578 60102
2147
5740 43780 3883
fgnQ2Q(i bQ~i 1 sectpoundQtgO poundnQn~i 2 Chironomid larvae 4
83 167 250
716 1431 2862
2479 3342 5592
Mean number of organismssample 235 Standard deviation 116
nean nURl b er 0 f organlslls II 2 201771 Standard devi ati on 99221
H= 236 SD= 075 SR= 1 35 J= 066
A-15
STATION 58 Date 17 May 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) 123 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nemertea 2 100 171 7 5430 Nematoda 75 1000 64395 34404 ~~2Qih~a limQi~Q 2 200 171 7 3620 Oligochaeta 60 1000 51516 33376 ~~igQY~~~12 iQ~[~~gi 2 200 171 7 3620 bitQQ9~Bh~sect Yr~Qsect 3 200 2576 579~
gQ[Qi~Yl ID2Dil~nsectisect Ostracoda
6 6
500 400
5152 5152
6003 8295
binQ~~nr[ sp gg[QQOYm mQQsect sect~QttQn 5n2Q~nsectia Chironomid larvae
2 34
1 1
200 1000
100 100
171 7 29192
859 859
3620 12927 271 5 2715
Mean number of organismssample 194 Standard deviation
2Mean nurn ber 0 f organIsms fA 166568 Standard deviation 56259
H= 225 SD= 072 SR= 1 45 J= 063
A-16
66
STATION 55 Date 17 May 1984 Depth 24 II
Salinity (bottom) 00 ppt Telllperature (bottom) 126 C No of samples 10
Total Frequency occurrence
Taxa nUllber (X) X SD --------------------------------------------------------------~-----------
Nematollorpha 2 200 171 7 3620 Nematoda 63 1000 54092 35297 Oligochaeta 94 1000 80708 44004 ~~iQQY~k~~l iQt~(m~Qi bitnQg~Qh~~ Yi[~Q gQ[QipoundY~ mni~Q~i Ostracoda
10 9 4 2
600 800 300 100
8586 7727 3434 171 7
9050 4874 6003 5430
bimnQ~~ln~[e sp ~Q(QQbiYm mQD ~Q[QQbiYm 2inipoundQ[n~ Chironomid larvae
6 142
3 1
600 1000 200 100
5152 121921
2576 859
4434 50682 5795 2715
Mean number of organismssample 336 Standard deviation 62
2Mean num ber 0 f organisms m 288490 Standard deviation 53421
H= 214 SD= 071 SR= 119 J= 062
A-17
STATION 45 Date 1 June 1984 Depth 61 m Salinity (bottom) 01 ppt Temperature (bottom) 139 C No of samples 10
Total Frequency occurrence
Density (no2)
Taxa nUllber (1) X SD
Nematoda 174 900 149396 132347 Turbellaria 5 200 4293 10898 ~~~QiQ~sect tmQtpoundQ~ ~QQsectQ flQi~sect Oligochaeta ~~iQQysecttygl~ iQl~rm~~i2 ~Q[Qi~~l~ ~~DilgDsectisect Ostracoda
5 20
190 103
12 5
400 900
1000 900
60 (I 400
4293 17172
163134 88436 10303 4293
6071 8095
92563 51524 11304 6071
bimnQpoundytng[ sp ~gQmYsectisect IDg[pound~Qisect ~Q[QQhi~m sectlmQDisect sectpoundQtiQlsectQ pound~Qgsectisect ChironQmid larvae
33 1
10 375
2
900 100 700
1000 200
28334 859
8586 321975
171 7
17196 2715 7010
179201 3620
Mean number of organismssample 935 Standard deviation 254
nurn b 0 f 2lean er organlsms m 802791 Standard deviation 218423
H= 239 SD= 075 SR= 1 22 J= 065
A-18
STATION 18 Date 1 June 1984 Depth 30 AI
Salinity (bottom) 00 ppt Temperature (bottom) 134 C No of samples 11
Frequency Density (no 1m2)
Taxa Total number
occurrence (X)
---------------- shyX SD
Turbellaria 14 636 10928 1157 7 ~~~Qltlg~ ilipoundQ~ Oligochaeta
10 178
727 1000
7805 138937
601 6 67913
~~iQQy~tY~l~ ill~[m~Qi~ 122 636 95227 93619 ~Q[Qipound~ l~i~lsectisect Ostracoda
7 1
455 9 1
5464 78 1
6946 2589
billQylhg[ Spa 16 818 12489 10420 GQ[QQQil HQi~ 139 1000 108496 70934 gQ[Qebi secteiifQ[~ sectQiiQi2 ~Q~sectisect Diptera pupae
1 2 1
9 1 182
11 1
781 1561 781
2589 3473 2589
Chironomid larvae 2 182 1561 3473
Mean number of organismssample 714 Standard deviation 284
nean num b er 0 f organlsms m 2 612728 Standard deviation 244249
H= 232 SD= 075 SR= 1 25 J= 063
A-19
STATION 58 Date 1 June 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 138 C No of samples 10
Frequency Density (noI 2 ) Total occurrence
Taxa number (X) X SD
Nematoda 173 1000 148538 47383 Turbellaria 3 300 2576 4147 Oligochaeta 53 1000 45506 32139 ~giQgY2k~g~ ini~[m~Qi~ bQg91YehY2 Yi[~nsect ~Qr~i~Yl m~nl~n~i
26 1
10
600 100 500
22324 859
8586
3391 2 2715
13424 bimnQpound~Q~[ sp ~Q9~m[Y poundgnitYpoundQlysect ~QtQehiYm ~lQni
4 1
46
200 100
1000
3434 859
39496
8295 2715
22243 Chironomid larvae 1 100 859 271 5
Mean number of organismssample 318 standard deviation 103
M b f I 2ean num er 0 organlsms III 273035 Standard deviation 88842
H = 1 99 SD= 065 SR= 1 08 J= 060
A-20
STATION 55 Date 1 June 1984 Depth 27 m Salinity (bottom) 00 ppt Temp era t u r e (b 0 t tom) 140 C No of samples 10
Frequency Density (nom 2 ) Total occurrence
Taxa nueber (X) X SD
Nematoda 157 1000 134800 69524 Turbellaria 9 400 7727 13696 tlHl~lk ~2~~iQH 1 100 859 2715 Oligochaeta 49 1000 42071 32745 ~~iQQysect~gl~ S[l9sect bHbQghQb~~ Yirl~
10 1
400 100
8586 859
12799 2715
tQ[Qpoundls l2lilUsect bilQHSbg[ sp ~QrQQbil nllQisectHarpacticoida
4 7
134 1
400 500
1000 100
3434 6010
115052 859
4434 7069
44742 271 5
sectpoundQUQlls poundsQgn~sect Chironomid larvae
1 1
100 100
859 859
271 5 2715
Hydracarina 1 100 859 2715
Hean number of organismssample 376 Standard deviation 132
M b f 2ean num er 0 organIsms m 322834 Standard deviation 113127
H= 202 SD= 068 SR= 1 40 J= 055
A-21
STATION 45 Date 18 June 1984 Depth 67 m Salinity (bottom) 01 ppt Temperature (bottom) 149 C No of samples 10
Frequency Density (nom2)
Taxa Total nUllber
occurrence ex) i SD
Nematoda 109 1000 93587 3891 7 Turbell ari a 3 200 2576 5795 ~g~tbg limoipoundQl Q~Qni2 fQ(i~2 Oligochaeta ~gigQ~~Y inl[ggi ~Q[QiSY2 moilo Ostracoda
3 2
194 44
7 3
200 200
1000 1000 200 200
2576 171 7
16656B 37778 6010 2576
5795 3620
118364 36020 12831 5795
bimoQampl~n~[2 sp ~Q[QQbiYm lmgoi Harpacticoida sectpoundQQ1202 pound2022Osect Chironomid larvae
68 1 1
113 2
900 100 100
1000 200
58385 859 859
97022 171 7
97627 2715 2715
73976 3620
Mean number of organismssa_pie 550 Standard deviation 371
Mean nUll ber 0 f organIsms 2II 472230 Standard deviation 318519
H= 242 SD= 077 SR= 1 32 Ja 065
A-22
STATION 18 Date 18 June 1984 Depth 34 m Salinity (bottom) 00 ppt Temperature (bottom) 155 C No of samples 10
Frequency Density (nom 2) Total occurrence ----------------shy
Taxa nUlber (Z) X SD
Neutoda 291 1000 249853 138826 Turbellaria 1 100 859 2715 ~~n~~nki~ sectQ~~iQ~2 ~g~ntbg2 limni~Q9 Oligochaeta
1 3
123
100 300
1000
859 2576
105608
271 5 4147
48240 ~~igQY~~~~9 int~(mgii ~Q[~i~~~ mini~ni bimnQ~ylbg(~ Spa
67 6 5
1000 500 400
57526 5152 4293
40485 6003 6071
~Q(QebiYm ~imQnisect Harpacticoida
80 2
1000 200
68688 171 7
41276 3620
sect~QttQini ~2nig~n~i Chironomid larvae
2 4
200 300
171 7 3434
3620 6003
Mean number of organismssample 585 Standard deviation 194
I 2Mean urn b er 0 f organIsms m 502281 Standard deviation 166943
H= 203 SD= 068 SR= 1 20 J= 057
A-23
STATI ON 58 Date 18 June 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (noI 2) Total occurrence
TaKa number (X) X SD
Nellertea 2 100 1717 5430 Nematoda 160 1000 137376 6361 1 Turbellaria 4 400 3434 4434 Oligochaeta 36 1000 3091 0 14705 ~iQQYik~ Q1rQ 4 300 3434 6003 bitnQgl~ebysect YrDsect ~Q[QiY~ ~~nni biQQpoundY1h[ sp ~Q[Qeng ~ilQD Chironomid larvae
3 1 3
61 1
300 100 300
1000 100
2576 859
2576 52375
859
4147 2715 4147
1428 1 2715
Chironollid pupae 1 100 859 271 5
Mean number of organismssample 276 standard deviation 72
nean nurn b er 0 f organIsms I 2 236974 Standard deviation 61410
H = 1 78 SD= 060 SR= 1 23 J= 051
A-24
STATION 55 Date 18 June 1984 Depth 18 m Salinity (bottom)1 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (no 1m2) occurrence
Taxa (X) X SD
Nematoda 160 1000 137376 43967 Turbellaria 1 100 859 271 5 Oligochaeta 61 1000 52375 31985 ~~iQQY~kY~~ int~[mQi~ ~Q[Qipound~l~ m~nini~ biIDnQ~Ylb[s sp
3 3 3
300 300 300
2576 2576 2576
4147 4147 4147
~Q[Q~bi~ ~slIDQni~ Chironomid larvae
85 6
1000 600
72981 5152
34165 4434
Mean number of organismssample 322 Standard deviation 75
2Mean number 0 f organIsms m 276469 Standard deviation 64099
H= 178 5D= 065 SR= 0B4 J= 059
A-25
Frequency Density (no2) occurrence -----------------
Taxa (7) X SD
Nematoda 104 1000 89294 47409 Turbell ar i a 1 100 859 2715 ~~~nQ~sect imni~Q~ tjQQsectQlis flQig~ Oligochaeta
2 1
297
100 100
1000
171 7 859
255004
5430 271 5
146273 ~~i~QYsect~Y~lls ilr2is gQrQi~y~ IDDilDia
24 4
600 300
20606 3434
27212 6003
Ostracoda 2 200 171 7 3620 biDQSy~b~C~ sp M~QYsectisect m~r~~Qi ~QrQeniy QD Harpacticoida
157 1 1 1
900 100 100 100
134800 859 859 859
73197 2715 2715 2715
sectpoundQttQDs SsDQD 113 900 97022 61656
STATION 45 Date 2 July 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) No of samples 10
172 C
Mean number of organismssample 708 Standard deviation 339
M ean num b er f 20 organisms 607889 Standard deviation 290B22
H= 216 SD= 073 SR= 1 27 J= 058
1-26
STATION 18 Date 2 July 1984 Depth 24 WI
Sal inity (bottom) 00 ppt Temperature (bottom) 172 C No of samples 10
--------------------------------~-----------------------------------------Frequency Density (nom2)
Total occurrence Taxa number (7) X SD
Nematoda 202 1000 173437 113532 ~~~nih~sect mnpoundQ~ Oligochleta
4 102
400 1000
3434 87577
4434 54873
~~igQYsect~Y~12 inl~rmgi2 ~Q[~poundYl~ m~ni~nsectisect bimnQpoundylh~[~ Spa
115 4
15
900 300 900
98739 3434
12879
100720 6003 9274
~Q[QQniY~ sect~QDi~ 55 900 47223 40525 Harpacticoida 1 100 859 2715 sectpoundQiiQlD SDg~DEisect Chironomid larvae
2 6
200 400
1717 5152
3620 7240
Hymenoptera 1 100 859 2715 Hydracarina 1 100 859 2715
Mean number of organismssample 508 Standard deviation 253
2Mean num ber 0 f organIsms m 436169 Standard deviation 217580
H= 225 SD= 074 SR= 1 22 J= 063
A-27
STATION 58 Date 2 July 1984 Depth 58 1
Salinity (bottom) 00 ppt Temperature (bottom) IBO C No of samples 10
Frequency Density (no2) Total occurrence
Taxa number ltX) i SD
Nematoda 151 1000 129649 42729 Turbellaria 1 100 859 2715 01 i gochaeta 41 1000 35203 22698 ~~i~e~~~ int~~m~~ 3 200 2576 5795 btbQglYRhY~ Yir~n~ ~e~~ampy mni~niii bimQeamp~tb~ sp ~e~eQhiY ~mQni Chironomid larvae
1 4 2
68 1
100 300 200
1000 100
859 3434 171 7
58385 859
271 5 6003 3620
1557 1 2715
Mean number of organisassample 272 Standard deviation
I 2Mean num ber 0 f organIsms I 233539 Standard deviation 62546
H = 1 69 SD= 061 SR= 099 J= 053
A-28
73
STATION 55 Date 2 July 1984 Depth 15 III
Salinity (bottom) 00 ppt Temperature (bottom) 182 C No of samples 10
Frequency Density (nom2) occurrence
Taxa (X) X SD
Nematoda 184 1()00 157982 5264B Turbellaria 1 100 859 271 5 Oligochaeta ~~iQQ~sect~Y~ll~ n~[~~Qi~ bitnggYQDYsect Yi[~nsect ~QrQipoundM2 m2ni~nsectisect bimnQpoundYn~[2 sp ~QrQQhiM Qni Harpacticoida
91 2 1 B 2
96 2
1000 200 100 500 200
1000 200
78133 171 7 859
6869 171 7
82426 1111
26058 3620 271 5 1890 3620shy
25980 3620
ChirDnomid larvae 5 400 4293 6071 Chironolllid pupae 1 100 859 2715
Mean number of organismssample 393 Standard deviation 53
2t1ean nUllber Df organlsms III 337430 Standard deviatiDn 45080
H= 187 SD= 067 SR= 116 J= 054
A-29
STATION 45 Date 17 Jul y 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (X) X SD
Nematoda 215 1000 184599 45837 ~~n~b~~ imDipoundQ Qe~Qni fllHi2
3 1
300 100
2576 859
4147 2715
Oligochaeta 305 1000 261873 147955 ~~iQQY~k~ in~rm~2i ~Qr~ipoundYl IDniln~i~ Ostracoda
17 1 2
500 100 200
14590 859
171 7
22554 2715 3620
bmnQpound~ihr sp ~QCQQhiY ~lQD~
176 1
1000 100
151114 859
57125 2715
Harpacticoida 4 300 3434 6003 sectQ~~Qn poundnQnai~ Chironomid larvae
91 5
1000 400
78133 4293
61310 6071
Mean number of organismssample 821 Standard deviation 275
M b f 2ean num er 0 organlsms m 70491 1 Standard deviation 236369
H= 215 SD= 073 SR= 114 J= 060
A-30
STATION 18 Date 17 Jul y 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom 203 C No of samples 10
Frequency Density (001 2 Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 339 1000 291065 119140 Turbellaria 3 200 2576 5795 ~~2~b~~ limnipoundQ12Oligochaeta
4 18S
300 1000
3434 161417
6003 89393
~~iQQy~~~ls in~(ID~Qi bim~Qampy~bg(2 Spa
34 16
800 700
29192 1373B
22967 15252
~g(gebi~m ~21mQni2 Harpacticoida
52 3
1000 200
44647 2576
25212 5795
2ampQ11Q1202 ampS02Qg~2i2 Chironomid larvae
18 10
700 700
15455 8586
13904 701 0
Mean number of organi$mssample 667 Standard deviation IBB
H ean nurn b er 1 20 f organIsms m 572686 Standard deviation 161750
H = 1 99 SD= 065 SR= 090 J= 060
A-31
STATION 58 Date 17 July 1984 Depth 55 AI
Salinity (bottom) 00 ppt Temperature (bottom) 197 C No of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nellatoda 173 1000 14853B 66390 Turbellaria 1 100 859 271 5 ~~~n~hu ini~QA Oligochaeta
1 46
100 1000
859 39496
2715 26293
~gipoundQy~~ygl2 in~rJg~i~ b1nQglYRnY~ Yi( Bivalvia
6 2 1
400 200 100
5152 1717 859
8295 3620 271 5
ei~ IDnH~n~i~ 2 200 171 7 3620 Ostracoda 1 100 959 271 5 biIDQHlh~( Spa ~Q(QRbim ~21Qnisect Diptera pupae
1 94
1
100 1000 100
859 80708
859
2715 35332 2715
Heleidae 1arvae 5 500 4293 4525 Chironomid larvae 1 100 859 2715
Mean number of organismssample 335 Standard deviatiDn 113
Mean number of organismsRI2 287631 Standard deviation 97413
H= 1 86 SO= 064 SR= 155 J= 049
A-32
STATION 55 Date 17 July 1984 Depth 18 m Sali nity (bottom) 00 ppt TeAlperature (bottom) 199 C No of samples 10
Frequency Density (nom2 ) occurrence
Taxa (X) x S D
Nematoda 61 1000 52375 33972 Turbellaria 1 100 859 2715 Oligochaeta 24 900 20606 11590 ~~i2QY~k~~1 iOi[2 bimDQ~xlb~r sp ~Q[QQhi~ sectgni~ Chironomid larvae
3 1
38 3
200 100
1000 300
2576 859
32627 2576
5795 2715
19326 4147
Mean number of organismssample 131 standard deviation 54
M b f 2ean num er 0 organIsms 112477 Standard deviation 46757
H= 184 SD= 066 SR= 085 J= 065
bull
A-33
STATION 45 Date 1 August 1984 Depth 58 m Sal i nity (bottoll) 03 ppt Temperature (bottom) 203 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa nUllber (X) X SD
Nematoda 145 1000 124417 52344 Turbellaria 1 100 859 2715 Mmth~sect iHpoundQ~ Q~~Qi ilQ[i9Oligochaeta
5 3
196
500 300
1000
4293 2576
168286
4525 4147
91064 ~igQYsect~~li int9i Ostracoda
2 3
100 300
171 7 2576
5430 4147
bimnQpoundtl sp ~Q[Q2hiY sectlQni~
240 6
1000 600
206064 5152
73526 4434
sectpoundQtQl poundngnai~Helei dae larvae
1862 1
1000 100
1598713 859
966134 271 ~
Mean number of organismssample 2464 Standard deviation 1156
211 ean num ber 0 f organIsms II 2115590 Standard deviation 992518
H= 124 SD= 041 SR= 089 J= 036
A-34
STATION 1S Date 1 August 1984 Depth 24 II
Salinity (bottom) 00 ppt Temperature (bottom) 198 C No of samp I es 10
Frequency Density (nom2) occurrence ---------------- shy
Taxa (X) X S D
Nuertea 1 100 859 2715 Nellatolllorpha 1 100 859 2715 Nematoda 248 1000 212933 108288 Turbellaria 4 400 3434 4434 ~untb~la Hli~g Oligochaeta
4 206
400 1000
3434 176872
4434 75309
~~igQYli~dli i[t~(gi~ ~QtQpound l binQ~ybt2 sp ~2l~bi Q[i ~2tlgtQ(ila tirisect sectpoundQtel poundl9lla Chironomid larvae
10 1
20 205
1 574
9
500 100 800
1000 100
1000 400
8586 859
17172 176013
859 492836
7727
10709 271 5
14021 48104
271 5 150531
13696
Mean number of organismssample 1284 Standard deviation 290
M b f I 2ean nurn er 0 organIsms III 1102442 Standard deviation 2488B5
H= 211 SD= 071 SR= 1 16 J= 057
A-35
STATION 58 Date 1 August 1984 Depth 55 m Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samp 1es 10
Frequency Densi ty _ ltnom2 ) Total occurrence
Taxa number (7) X SD
Nemertea 1 100 859 2715 Nematoda 22 900 18889 15036 Turbellaria 1 100 859 2715 Oligochaeta 19 700 16313 17385 biiQQgl~QhY~ YiCg~~ 2 200 171 7 3620 ~Q[~i~~l~ m2nil~n2i2 ~Q[QehiYm ~lmQni2
4 164
300 1000
3434 140810
6003 103048
Heleidae larvae 8 500 6869 8868
Mean number of organismssample 221 Standard deviation 111
I 2Mean num ber 0 f organIsms m 189751 Standard deviation 95391
H = L 37 SD= 043 SR= 090 J= 046
A-36
STATION 55 Date 1 August 1984 Depth 15 m Salinity (bottoll) 01 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (i ) X SD
Nemertea 1 100 859 2715 Neutoda 122 1000 104749 7394B Turbellaria 4 300 3434 6003 ~~~~~nt~ secte~poundQa~ Oligochaeta
1 118
100 1000
859 101315
2715 61223
~giQgY~k~~l iot~[m~Qi btbQg~2b~ Y[O ~grQipound~ ~nl~ni b~ngpound~tb~[ Spa
3 1 5 1
200 100 500 100
2576 859
4293 859
5795 2715 4525 2715
~Q[QebiYm ~mQoi sect~QttQ~ ~OQOi Heleidae larvae
42 2 2
800 200 100
36061 171 7 171 7
21341 3620 5430
Chironomid larvae 4 400 3434 4434
Mean number of organismssapIe 306 Standard deviation 169
M b f I 2ean nurn er 0 organIsms m 262732 Standard deviation 145101
H = 198 SD= 067 SR= 1 45 J= 054
A-37
~-- --------------~~-------------
STATION 45 Date 17 August 1984 Depth 61 1
Salinity (bottom) 10 ppt Temperature (bottom) 210 C No of samp 1es 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nematoda 240 1000 206064 130213 ~~h~sect limQ tjQ~~Hi~ fQ[i~~ Oligochaeta
31 2
245
400 100
1000
26617 1717
210357
75228 5430
121374 babgglYQbl~ Yi[~sect 1 100 859 2715 Ostracoda 1 100 859 271 5 biQ~xtb~[ Spa ~~Q~~isect ~[pound~Qisect ~Qgebi HQOi
333 2
143
1000 200
1000
28591 4 171 7
1227BO
106553 3620
106860 sectpoundQUg~ poundg~nsectisect 1738 1000 1492247 68441 7
Mean number of organismssample 2736 Standard deviation 944
M b f I 2ean num er 0 organlslls m 2349130 Standard deviation 810600
H= 172 SD= 056 SR= 079 J= 052
A-38
STATION 18 Date 17 August 1984 Depth 27 III
Sal i ni ty (botto) 01 ppt Temperature (bottom) 214 C No of samples 10
Frequency Density (nom 2 ) occurrence
Taxa (X) X SD
Nematoda 186 1000 159700 62468 ~tgt SPa 2 100 171 7 5430 Turbellaria 8 400 6869 8868 ~~ntbg2 imnipoundQ 12 700 10303 11304 Oligochaeta 283 1000 242984 90509 ~~iQQY~~Y~lls inlgtmggisBivalvia
4 1
400 100
3434 859
4434 271 5
~Qt~i~Y nilnsectisectbimnQpoundttbg[s SPa ~QtQQbi~ islmQDi2
1 17
286
100 900
1000
859 14596
245560
271 5 10747 83461
sectpoundetteln poundDsggnsectisect Chironomid larvae
526 4
1000 3Q0
451624 3434
179610 6003
Mean number of organismssapIe 1330 Standard deviation 162
Mean nurn ber I 20 f organIsms m 1141938 Standard deviation 139389
H= 214 SD= 073 SR= 1 06 J= 060
A-39
STATION 58 Date 17 August 1984 Depth 55 II
Salinity (bottom) 01 ppt Temperature (bottom) 220 C ND of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (7) x S D
Nematoda 68 1000 58385 27689 Turbellar i a 4 200 3434 8295 Oligochaeta 19 800 16313 13084 ~~i~Q~k~~l~ in~~[m~i bitUQ9Y2bYa Yi[~na Bivalvia
3 3 4
300 300 300
2576 2576 3434
4147 4147 6003
gQ[QipoundYl~ mnilDa 1 100 859 2715 binQpoundY~[ sp gQ[Q2UY a~mgnia sect~Qtgl~n ~n~~ni
2 338
6
100 1000 400
171 7 290207
5152
5430 56636 7240
Mean number of organismssample 448 Standard deviation 72
W b f 2lean num er 0 organlsms II 384653 Standard deviation 61988
H = 1 27 SD= 041 SR= 1 02 J= 038
A-40
STATION 55 Date 17 August 1984 Depth 18 m Salinity (bottom) 00 ppt Temperature (bottol) 223 C No of samples 10
Frequency Density (nom 2 ) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 291 1000 249853 118104 Turbellaria 1 100 859 2715 M~ntb~ mni~Q Oligochaeta
1 47
100 1000
859 40354
2715 28347
~~iQQ~sectkY~ll int~[m~gi bitbQQ1YSDY Yi(gn Bivalvia
25 12
6
900 500 400
21465 10303 5152
1231 0 18459 7240
~Q~2ipoundY mnil~ni Ostracoda
11 8
400 600
9445 6869
12442 6773
bmnQpoundYb~r~ SPa 52 1000 44647 19746 ~QrQsbY lmgnisectsQiielo snQ~ni~ Chironomid larvae
43 5
15
1000 400 BOO
36920 4293
12879
21436 6071 8344
Mean number of organismssample 517 Standard deviation 174
M b f I 2ean num er 0 organlsms m 443896 Standard deviation 149431
W = 228 SD= 065 SR= 1 33 J= 062
A-41
STATION 45 Date 29 August 1984 Depth 55 III
Salinity (bottom) 07 ppt Temperature (bottom) 199 C No of samples 10
Frequency Density (noI 2) Total occurrence
Taxa number (X) X SD
Nematoda 192 1000 164851 98380 ~sntbsect limnipoundQlDligochaeta
2 198
200 1000
171 7 170003
3620 67339
~Q[eipoundYls msniln~isect Ostracoda
1 4
100 400
859 3434
2715 4434
bimnQpoundytb[s Spa gQ[Qeniy sect21QOi~ sectpoundQttQlsO poundsOsggOi
164 87
2468
1000 1000 1000
140810 74698
2119025
39283 39460
840890
Mean number of organismssample 311 6 Standard deviation 101 1
ill b f 2nean nUll er 0 organIsms 2675398 Standard deviation 8682B8
W= 116 SD= 036 SR= 060 J= 039
A-42
STATION 18 Date 29 August 1984 Depth 30 bull Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samples 10
Total Frequency occurrence
Densi ty 2
(nom )
Taxa number (~ ) x S D
Nematoda 150 1000 128790 28905 Turbellaria 7 400 6010 9096 ~nh imni~Qj Oligochaeta ~~i~2Y~k~~1 ini~CIDgii bih2g~Qb~ Yi(~U2 Bivalvi a
B 145
1 1 2
600 1000
100 100 200
6869 124497
859 859
171 7
677 3 84732
271S 2715 3620
~Q[Qi~yli miDllgni bimn2pound~ih~C sp ~QtQehiY imQUia Harpacticoida
7 7
265 1
500 300
1000 100
6010 601 0
227529 859
8145 10747
139462 2715
sect~QtiQDi ~Q~Q~i~ Chironomid larvae
2471 2
1000 200
2121601 171 7
1063112 3620
Mean number of organismssample 3067 Standard deviation 121 9
2Mean number 0 f organIsms m 2633326 standard deviation 1046718
H = 1 09 SD= 034 SR= 1 04 J= 029
A-43
STATION 58 Date 29 August 1984 Depth 55 111
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (noI 2 ) Total occurrence -----------------
Taxa nUllber (X) X SD
Nemertea 4 400 3434 4434 Nuatoda 64 1000 54950 25016 Turbellaria 9 400 7727 11047 ~Hl~b limli~Q19 Oligochaeta
1 37
100 1000
859 31769
2715 19006
i~Qyh il(~~ bHtlQSlheln Yl Bivalvia
4 4
20
200 300 400
3434 3434
17172
8215 6003
26541 ~e(ijY l bQ~dlH sp
26 1
700 100
22324 859
25662 2715
~Q[QQhil iQ sectjgUell HD Heleidae larvae
418 20
1
1000 800 100
358895 17172
859
129443 12799 271 5
Mean number of organismssample 609 Standard deviation 175
nean num b er 0 f organIsms 1 111 2 522887 Standard deviation 150164
H= 176 SD= 051 SR= 1 30 J= 047
A-44
I I
I
I
STATION SS
Date 29 August 1984 Depth 21 1
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (no2) Total occurrence
Taxa nUllber (X) x S D
Nematoda ISO 1000 128790 37969 Turbellaria 1 100 859 271 5 Oligochaeta 48 1000 41213 16088 ~i~g~sect~~l iQ~~mgi bi~QQg~gb~sect ~i~nsect
10 14
600 600
eSB6 12020
9050 14137
Bivalvia 4 200 3434 7240 ~Q[Q~Yl niQaa Ostracoda
15 7
700 SOO
12879 6010
15806 7069
bmQg~~~b~ SPa 14 800 12020 8295 ~g[gaby mgni sect~g~~Qn ~ngnai Chironomid larvae
IB4 25 9
1000 900 700
157982 21465
7727
35563 16810 6335shy
Mean number of organismssample 481 Standard deviation B6
2Mean number 0 f organlsms m 412987 Standard deviation 74131
H= 24S SD= 074 SR= 1 23 J= 068
A-45
STATION 45 Date 14 September 1984 Depth 61 11
Salinity (bottom) 03 ppt Temperature (bottom) IB4 C No of samples 10
---------------------------------~----------------------------------------
Taxa TotalnUlllDer
Frequency occ~~~ence
Density (no 2) -----X-------sect7B
Nematoda 189 1000 162275 85233 t1tQ SPa
Turbellaria 2 2
200 100
171 7 171 7
3620 5430
~~~nIng limoifQl t1QQQDi~ flQriQ Oligochaeta
5 19
142
400 800
1000
4293 1631 3
121921
6071 12442 30504
~QQifYl mDl~D bimoQpoundt1hgr Spa Cumacea
19 184
2
800 1000 200
1631 3 157982
171 7
130B4 69541 3620
~Q[QnniYm ~~lmQDi Harpacticoida
118 1
1000 100
10131 5 B59
43367 2715
sectfQIIQD fOQgO Chironomid larvae
1780 1
1000 100
1528308 859
673586 2715
Mean number of organismssample 2464 Standard deviation 874
M ean num b er f 20 organlsms 2115590 Standard deviation 750305
H= 151 SD= 046 SR= 1 07 J= 041
A-46
STATION 18 Date 14 September 1984 Depth 21 III
Salinity (bottom) 01 ppt Temperature (botto) 182 C No of samples 10
Frequency DenSity (nom 2 ) Total occurrence ---------------- shy
Taxa nUlDber (i) X SD
Nemertea 1 100 859 271 5 Nematoda 186 1000 159700 44925 Turbellaria 16 400 13738 20717 ~~Dth~~ limni~Ql Oligochaeta
13 55
700 900
11162 47223
9096 30085
~Q~ei~Yl nil~Qi~ 17 900 14596 7069 bimDg~lbg[ Spa b 500 5152 6003 ~Q[Q2niY ~lgQi~ Harpacti coi da
562 2
1000 200
482533 171 7
136766 3620
sectpoundQttQ~Q~ ~n~ni 791 1000 679153 324290
Mean number of organismssample 1649 Standard deviation 447
I 211ean nUll ber 0 f organIsms I 1415831 Standard deviation 384136
H= 179 SD= 064 SR= 084 J= 054
A-47
STATION 58 Date 14 September 1984 Depth 58 III
Salinity (bottom) 01 ppt Temperature (bottom) 191 C No of sampl es 10
-------------------------------------------~------------------------------Frequency Density (nom 2 )
Total occurrence Taxa number eX) X SD
Nemertea 1 100 859 2715 Nematoda 55 1000 47223 18658 Turbellaria 10 500 8586 11448
1 100 859 2715 Oligochaeta 41 1000 35203 17850 ~~iQQ~~gll iu1g[m~i ~Q[Q~Yl nilD bimnQ~Y~h[ Spa ~Q[Q~hiYm lmgui sectpoundQilg1D poundU2D Chironomid larvae
4 10
2 277
23 4
100 500 200
1000 700 300
3434 8586 171 7
237832 19748 3434
10861 11448 3620
50561 21051 6003
Mean number of organismssample 428 Standard deviation 51
M b f 2ean num er 0 organIsms III 367481 Standard deviation 43743
H= 179 SD= 055 SR= 114 J= 052
A-48
I I
STATION SS Date 14 September 1984 Depth 21 II
Salinity (bottom) 01 ppt Temperature (bottom) 190 C No of samples 10
--------------------------------------------------------------------~-----
Frequency Density (no1I2) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 102 1000 87577 39200 Oligochaeta 34 700 29192 31142 ~iQ2Y~y1 int(mgi~ bithQgl~en~ Yi(gDsect ~Q(~i~Y m~DilgDsecti~ bimDQamp~1h(sect sp ~2(QQhiY slmQD 2poundQiiQlsD ~sD~g~nsecti Chironomid larvae
36 18 16 17
100 16
3
1000 600 800 700
1000 800 300
30910 15455 13738 14596 85860 13738 2576
157BO 20953 10078 14621 32126 10861 4147
Mean number of organismssample 342 Standard deviation 97
2Mean nUllber 0 f organlsms m 293641 Standard deviation 83617
H= 262 SD= 079 SR= 095 J= 083
A-49
Appendix B--Sediment particle size and organic content of the Cathlamet Bay
benthic invertebrate sites 13 March through 14 September
1984
iii
1
Station 18a 48 54 57
Survey 1 1 1 1
Month March March March March
Day 13 13 13 13
Particle size (mm) Phib Percent by weight
gt 40 -2 000 000 000
20- 40 -1 000 000 000
10- 20 0 000 009 000
05- 10 1 018 1079 032
025- 050 2 545 7583 2468
0125- 025 3 8731 1225 6783
00625-0125 4 491 037 657
lt0625 (5-12) 216 067 060
Organic Content 160 116 128
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
b Phi= -log2(sediment particle diameter in mm)
B-1
Station 18a 48 54 57
Survey 2 2 2 2
Month April April April April
Day 5 5 5 5
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 003 093 000
05shy 10 1 005 31 75 023
025shy 050 2 087 5904 2368
0125- 025 3 6316 750 7155
00625-0125 4 3056 026 427
lt0625 (5-12) 533 052 028
Organic Content 081 077 065
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-2
Station 45 55 58
Survey 3 3 3 3
Month April April April April
Day 18 18 18 18
Particle size (mm)
gt 40
Phi
-2
Percent by weight
000 000 000
20shy 40 -1 000 000 000
10shy 20 0 005 009 004
05shy 10 1 010 027 013
025shy 050 2 015 095 225
0125- 025 3 097 536 6111
00625-0125 4 453 2821 2205
lt0625 (5-12) 9420 6511 1442
Organic Content 31 42 14
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-3
Station 18a 45 55 58
Survey 4 4 4 4
Month May May May May
Day 4 4 4 4
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 021
05shy 10 1 000 065 063
025shy 050 2 012 370 230
0125- 025 3 091 4099 4696
00625-0125 4 322 3650 3052
lt0625 (5-12) 9575 1810 1939
Organic Content 330 180 160
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-4
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
5
May
17
000
000
005
016
217
5862
2729
1170
100
45 55 58
5 5 5
May May May
17 17 17
Percent by weight
000 000
000 000
005 008
113 031
325 274
1903 5613
2784 2401
4870 1672
240 110
000
000
000
010
020
079
397
9494
390
B-5
Station 18al 45 55 58
Survey 6 6 6 6
Month June June June June
Day 6 6 6 6
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 020
05shy 10 1 005 051 027
025shy 050 2 005 301 1 79
0125- 025 3 074 3189 5404
00625-0125 4 599 4118 2885
lt0625 (5-12) 9317 2332 1485
Organic Content 340 240 150
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-6
Station
Survey
Month
Day
Particle size Cmm) Phi
gt 40 -2
20shy 40 -1
10shy 20 a
05shy 10 1
025shy 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
7
June
18
000
000
005
029
138
3917
4143
1768
180
45
7
June
18
55 58
7 7
June June
18 18
Percent by weight
000
000
000
010
020
080
427
9464
310
000 000
000 000
000 007
011 022
057 190
957 5286
3023 2642
5957 1853
1 70 110
B-7
Station 18al 45 55 58
Survey 8 8 8 8
Month July July July July
Day 2 2 2 2
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 006 002 006
05shy 10 1 006 0l3 023
025shy 050 2 017 088 171
0125- 025 3 074 2712 5365
00625-0125 4 552 3892 3081
lt0625 (5-12) 9345 3294 l354
Organic Content 410 210 160
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-8
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
9
July
17
000
000
003
013
130
4294
4434
1127
130
45
9
July
17
Percent
000
000
000
006
012
051
046
9885
290
55
9
July
17
by weight
000
000
019
048
091
628
3616
5597
030
58
9
July
17
000
000
004
022
158
5017
3148
1650
140
B-9
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18al
10
August
1
45
10
August
1
55
10
August
1
58
10
August
1
Percent by weight
000 000
000 004
001 004
009 018
018 088
098 306
049 2510
9824 7070
000
005
045
763
3604
4495
932
156
100 190 060
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-10
Station 18 45 55 58
Survey 11 11 11 11
Month August August August August
Day 17 17 17 17
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000 000
20- 40 -1 005 000 000 000
10- 20 0 021 003 000 210
05- 10 1 064 009 000 159
025- 050 2 226 027 045 2656
0125- 025 3 3259 131 712 3719
00625-0125 4 4327 195 1737 1159
lt0625 (5-12) 2098 9635 7506 2097
Organic Content 210 300 160 100
Ii I
B-11
Station
Survey
Month
Day
Particle size (mm) Phi
gt40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
12
August
29
000
000
012
046
186
3465
4498
17 93
241
45
12
August
29
55 58
12 12
August August
29 29
Percent by weight
000
000
002
009
026
118
189
9656
540
000 000
000 000
003 011
011 028
055 1013
859 5033
1596 1827
7476 2089
1 70 120
B-12
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
_-------------------- shy
B-13
58 amp
c ~
lt ~ 57 57 - +$ ampmiddotJ~EE~L
IS Yamp1 sf~18 l) bull bull t - amp ~ ~~
$+ ~BAYCATHLAMET
~~
OREGON
1N
5 o KM
~GRAYS BAY WASHINGTONcgt
~ ~
amp - Core sampler
$ - Purse seine +- Trawl
I ) o MI
N
Figure l--Locations and station numbers of fish and invertebrate sampling sites in
Cathlamet Bay
Table 1--Geographic locations of the benthic sampling stations in
Cathlamet Bay
Geographic location Station (Latitude and Longitude) Site Description
18 46 1234 N 123 4252 W Adjacent to Green Dolphin 3 at Wend of North Channel
45 46 1128 N 123 4414 W Center of old Marishytime Basin 600 m N of Corps of Enginshyeers dock
48a 46 1053 N 123 4409 W Adjacent to Can 7 off SW end of Lois Island in South Channel
46 1053 N 123 38 41 W Adj acent to Svensen Island piling jetty W of Red Dolphin 12A
55 46 11 17 N 123 3800 W Adjacent to Red Dolphin 14 at SW end of Minaker Island
46 1300 N 123 3809 W 50 m N of Seal Island in Woody Island Channel
58 46 1354 N 123 4010 W Adjacent to Can 5 in Woody Island Channel [after can was moved (18 July) approxshyimately 300 m Wof can]
a Stations which were replaced during Survey 3
3
stations known to have higher densities --45 55 and 58 respectively
after Survey 2 Higher benthic invertebrate densities would provide better
statistically identifiable relationships between densities and salinity As
a result of the changes in sampling stations only samples from Station 18
were analyzed for Survey 2 (5 April 1984)
Benthic samples were collected by SCUBA divers using a coring device
The sampler was constructed of 385-cm (inside diameter) PVC pipe which
penetrated 15 cm into the sediment thereby collecting a 924 cm3 sediment
sample (Fig 2) The coring device was operated as follows 1) the sampler
was filled with water on the boat to aid in diver descent 2) on the bottom
the diver removed the bottom cap and pushed the sampler into the sediment
until it stopped at the plexiglass plate (15 cm) and 3) the diver placed
his thumb on the top opening (forming a suction) removed the coring device
from the sediment and replaced the bottom cap All samples were taken
within the confines of a square meter aluminum irame
On the boat samples were washed through a 025-mm mesh screen placed
into labeled jars and fixed and preserved in a 4 formaldehyde solution
that contained rose bengal (a protein stain) At the laboratory samples
were washed of the formaldehyde sol ution and sorted with the aid of a 15X
dissecting microscope Invertebrates were identified to the lowest
practical taxon and counted
Initially 16 benthic cores were taken 15 to be used for benthic
invertebrate analysis and 1 for sediment analysis Subsequent statistical
analysis revealed 10 benthic invertebrate cores were sufficient to
adequately describe the benthic communities So after Survey 4
(1 August 1984) 11 benthic cores were collected per station
4
Opening
Top cap
Plexiglass disc c====tt====tt===J
PVC tubing
Bottom cap
1Scm String
Figure 2--Description of PVC benthic invertebrate sampling device
5
Station number date depth bottom salinity and temperature (taken
with a Beckman RS5-3 salinometer and probe1) sample size total numbers
frequency of occurrence and mean number 1m2 are presented in the Results
Besides the above H Shannon-Weaver diversity function (Shannon and Weaver
1963) SD Simpson diversity value (Simpson 1949) SR species richness
(Margalef 1958) and J species evenness value (Pielou 1966) were
calculated The following formulas were used s
1) H= - L Pi 10g2 Pii=1
where Pi= the proportion of individuals belonging to the ith
species
S = number of species s
2) SD= 1 - L Pi2 i=1
where Pi= the proporti on of individual s be longing to the i I th
species
3) SR= (S - l)loge N
where S= the number of species at the station
N= the total number of individuals at the station
4) J= H Ilog2 S
where H= the Shannon-Weaver diversity value
S = the number of species
Sediments were analyzed by seiving those particles lt 00625 mm were
considered the silt-clay fraction Organic content was determined by
burning at 550degC for 24 h
II Reference to trade names does not imply endorsement by National Marine Fisheries Service NOAA
6
RESULTS
Physical and biological data are presented by station in Appendix A A
list of the benthic invertebrate taxa identified during the survey are
presented in Table 1 Appendix B presents the sediment analysis
DISCUSSION
Although the purpose of this study was to obtain base line information
prior to modification of the ship navigational channel caution must be used
in interpreting the data First the MOBILOIL oil spill on 19 March 1984
may have affected the local benthic invertebrate biota Oil started to
occur in the benthic samples on the third survey (18 April 1984) and
continued until the end of the study (14 September 1984) Al though some
stations had more oil than others effects on the invertebrates were not
obvious Secondly year to year variations in benthic invertebrate species
and densities occur in the marine environment (Gray and Christie 1983)
Whether the benthic infauna in Cathlamet Bay varies cyclically is unknown
The long term stability or cycles need to be determined before changes of
the benthic infauna can be attributed to any habitat modification or
dredging proj ect
Salinity is considered to be the most important factor controlling the
distribution of estuarine animals (Kinne 1966) Since we performed our data
collections primarily at low tide the given salinity values must be
considered low values Chapman and Brinkhurst (1981) showed that seasonal
variations of benthic invertebrates in the Fraser River estuary were
correl ated with salini ty One common freshwater oligochaete species in
their study Limnodrilus hoffmeisteri also occurs in Cathlamet Bay Adult
hoffmeisteri can tolerate salinities up to 10 ppt and immatures 14 to
7
Table 1--List of invertebrate taxa found at benthic invertebrate sites
located in Cathlamet Bay Oregon March through September 1984
Coelenterata Hydra sp
Turbellaria Nemertea Nematoda Nematomorpha Oligochaeta
Vejdovskyella intermedia Limnodrilus hoffmeisteri Ilydrilus frantzi
Polychaeta Neanthes limnicola Hobsonia florida Manyunkia speciosa
Gastropoda Lithoglyphys (=Fluminicola)
Bivalvia virens
Corbicula manilensis Ostracoda
Limnocythera sp Mysidacea
Neomysis mercedis Cumacea Amphipoda
Eogammarus spp Eogammarus confervicolus Corophium salmonis Corophium spinicorne Pontoporeia hoyi Eohaustorius estuaris
Isopoda Saduria entomon
Harpacticoida Scottolana canadensis
Insecta Diptera adult Diptera pupae Heleidae larvae Chironomidae larvae Chironomidae pupae Trichoptera larvae Hymenoptera Collembola
Hydracarina
Occurrence not quantified
8
15 ppt (Chapman and Brinkhurst 1980) This species appears to be a useful
salinity indicator and future benthic work should identify and enumerate
this species Due to time and taxonomic expertise requirements only the
oligochaete species Vejdovskyella intermedia was enumerated Salinity
tolerances of this species are unknown
Since intersti tial salinities do not vary dielly as do salini ties in
the water column (Sanders et al 1965) interstitial salinities should have
been measured Al though many infauna species may be exposed to overlying
water because of activity andor tubes (exCorophium spp) many benthic
invertebrates are dependent on interstitial salinity levels Measurements
of interstitial salinities are necesssary to determine benthic infauna
sensitivity to salinity intrusion
Finally there appeared to be a large amount of within station
variability in the sediment texture particularly at Stations 55 and 58
The sediment at Station 55 ranged from a very fine sand to almost all clay
The sediment texture variability at Station 58 was a result of the uS
Coast Guard moving Can 5 to a new location forcing us to estimate the
previous location of our station
ACKNOWLEDGMENTS
We wish to thank Maurice Laird Nick Zorich Larry Davis Roy Pettit
Edward Koller and David Miller for their assistance in developing the
sampling device and collecting the samples We express special thanks to
Sandy Lipovsky Thomas Moylan and Susan Newhouse for helping sort and
identify the invertebrates
9
LITERATURE CITED
Chapman P M and R O Brinkhurst
1980 Salinity tolerance of some selected aquatic oligochaetes Internat
Rev der Gesamten Hydrobio1gie 65499-505
Chapman P M and R O Brinkhurst
1981 Seasonal changes in interstitial salinities and seasonal movements
of subtidal benthic invertebrates in the Fraser River estuary BC Est
Coast Shelf Sci 1249-66
Gray J S and H Christie
1983 Predicting long-term changes in marine benthic communities Mar
Ecol Prog Sere 1387-94
Kinne O
1966 Physiological aspects of animal life in estuaries with special
reference to salinity Neth J of Sea Res 3 227-244
Margalef R
1958 Information theory in ecology Gen Syst 336-71
McCabe G T Jr W D Muir R L Emmett and J T Durkin
1983 Interrelationships between juvenile sa1monids and nonsalmonid fish
in thl Columbia River estuary Fish Bu11U S 81(4)815-826
Pie10u E L
1966 The measurement of diversity in different types of biological
collections J Theor BioI 13131-144
Sanders H L P C Mange1sdorf and G R Hampson
1965 Salinity and faunal distribution in the Pocasset River
Massachusetts Limno Ocean 10216-229
Shannon L E and W Weaver
1963 The mathematical theory of communication Univ of Illinois Press
Urbana Ill
10
Simpson E H
1949 Measurement of diversity Nature 163688
11
APPENDIX A--Descriptive summary of benthic invertebrate data collected in
Cathlamet Bay Oregon during March through September 1984
STATION 18 Date 13 March 1984 Depth 46 m Salinity (bottom) 11 ppt Temperature (bottom) 67 C No of samples 15
Frequency Density (nom 2 ) Total occurrence
Taxa number (7) X SD
Nemertea 2 67 1145 4434 Nematoda 134 1000 76702 33169 Turbellaria 22 667 12593 15854 ~~n~b~~ imnpoundQ 31 Oligochaeta 486
933 17744 1468 1 100() 278186 138779
~QtQif~12 mnil~nsectisect 24 Ostracoda 39
933 13738 8462 800 22324 17715
~Q[QQbiYm ~lmQni~ 74 867 42358 38B70 EQntQIH~i2 Qyi 1 EQri gnQQn 1 Harpacticoida 7
67 572 2217 67 572 221 7
333 4007 7159 Insecta 2 67 1145 4434 Chironomid larvae 20 667 1144 B 10090 Collembola 95 867 54378 82588 Hydracarina 1 67 572 221 7
Mean number of organismssample 626 Standard deviation 19 1
M ean num b er 0 f 2organIsms III 537484 Standard deviation 163579
H= 237 so= 069 SR= 1 42 J= 061
A-l
STATION 48 Date 13 March 1984 Depth 107 m Salinity (bottom) 05 ppt Temperature (bottom) bB C No of sampl es 15
Frequency Densi ty (nom 2 ) Total occurrence
Taxa number (7) X SD
Nemertea 31 6b7 17744 1849 1 Nematoda 38 667 21751 22685 Oligochaeta 4 133 2290 6859 ~QQpound12 2nil~nsectisect 31 Ostracoda 1
667 17744 29648 67 572 221 7
~Q9~~[~ spp 1 ~Q[Q2l ~~lQnisect 1 ~Q2sectiQisect sectisect 4 Harpacticoida 1
67 572 2217 67 572 221 7
200 2290 5097 67 572 221 7
Insecta 2 133 1145 3021 Diptera adult 1 67 572 2217 Collembola 24 467 13738 30923
Mean number of organismssample 93 Standard deviation 59
Mean number of organismsm2 795b4 Standard deviation 50740
H= 255 SD= 079 SR= 1 55 J= 071
A-2
STATION 54 Date 14 March 1984 Depth 177 m Salinity (bottom) 00 ppt Temperature (bottom) 66 C No of samples 15
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nemertea 47 1000 26903 14096 Nematoda 7 267 4007 9102 Turbellaria 9 333 5152 1114B Oligochaeta 11 333 6296 10989 Gastropoda 1 67 572 2217 ~Q(Qi~Yl mnil~n2i~ Ostracoda
199 3
1000 200
11390B 171 7
97165 3555
gQ[Qehiy sectlmQnisect Harpacticoida
3 1
200 67
171 7 572
3555 221 7
Heleidae larvae 29 867 16600 10989 Chironomid larvae 2 133 1145 3021 Collembola 2 67 1145 4434
Mean number of organismssample 209 Standard deviation 103
2Mean number 0 f organIsms m 179734 Standard deviation 88247
H = 1 86 SD= 056 SR= 1 33 J= 052
A-3
STATION 57 Date 13 March 1984 Depth 91 m Salinity (bottom) 00 ppt Temperature (bottom) 63 C No of sampl es 15
Frequency Densi ty (no 81 2) Total occurrence
Taxa number (X) X SD
Nemertea 27 667 15455 13459 Nematoda 8 400 4579 6381 Turbellaria 4 200 2290 5097 Oligochaeta 8 400 4579 6381 ~g[gipound~l mnilui Ostracoda
1 1
67 67
572 572
2217 2217
~Qgml[a spp 1 67 572 2217 ~Q[Qeni~m lmQnisect Harpacticoida
2 1
133 67
1145 572
3021 221 7
Insecta 3 67 171 7 b651 Chironomid larvae 1 b7 572 221 7 Collembola 37 400 21179 65700 Hydracarina 1 67 572 221 7
Mean number of organismssample 63 Standard deviation 82
Mean number of organismsm2 54378 Standard deviation 70029
H= 253 SD= 075 SR= 1 83 J= 068
A-4
STATION 18 Date 5 April 1984 Depth 30 II
Salinity (bottoll) 00 ppt Temperature (bottom) 90 C No of samples 15
Frequency Densi ty (no1I 2) Total occurrence
Taxa number (i ) If S D
Nemertea 11 bOO 6296 6042 Nematomorpha 2 133 1145 3021 Nuatoda 119 1000 6811 6 50947 Turbellaria 20 600 11448 13640 ~~~nin~sect liIDni~Q12 Oligochaeta
33 481
1000 1000
18889 275324
10364 142326
~Q~Qi~Yl m2nil~ni2 23 600 13165 1371 7 Ostracoda 33 933 18889 10861 gQ(QQrriYID sect2mQnisectHarpacti coi da
38 7
933 133
21751 4007
13329 13328
Chironomid larvae 16 667 9158 8868 ColI embola 1 67 572 2217
Mean number of organismssample 523 Standard deviation 227
M b f 2ean num er 0 organIsms m 448762 Standard deviation 194508
H= 202 SD= 059 SR= 114 J= 0S6
A-5
STATION 45 Date 18 April 1984 Depth 64 III
Salinity (bottom) 00 ppt Temperature (bottom) 95 C No of samples 15
Total Frequency occurrence
Density (noI 2 )
Taxa number (X) X SD
Nematoda 171 1000 97890 92277 tyg~ sp Turbellaria
1 29
67 600
572 16600
221 7 23506
H~nng~ imDi~g tQQsectQl fg~ig Oligochaeta ~Q[Qi~Y2 m2niD~i Ostracodamiddot
9 41
367 42
100
400 1000 1000 800
1000
5152 23469
210071 24041 57240
781 5 13563
100542 19254 43134
~Q[Qeniym amQnisectHarpacticoida Heleidae larvae
37 2049
1
933 1000
67
21179 117284B
572
189B5 616612
221 7 Chironomid larvae 3 200 171 7 3555 Collembola 1 67 572 221 7 Insect parts 1 67 572 221 7
Mean number of organismssample 1901 Standard deviation 864
b f 2nean num er 0 organIsms m 1632485 Standard deviation 741931
H = 1 52 SD= 046 SR= 1 13 J= 040
A-6
STATION 18 Date 18 April 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom) No of samples 15
Frequency Density (nom2) Total occurrence
Taxa nueber (X) x s D
Nemertea 13 533 7441 9663 Nematomorpha 3 200 171 7 3555 Nematoda 195 1000 111618 63675 Turbell ari a 9 467 5152 6326 ~~ni~~ i~ni~Ql~ 30 867 17172 129B1 Oligochaeta 580 1000 331992 108880 ~QC~i~Ml~ m~nil~n~isectOstracoda
28 18
1000 667
16027 10303
11179 10364
~Q[Q~~iYm sect~Qni2 sect~ci~ gniQQnHarpacticoida
105 1
17
1000 67
400
60102 572
9731
25553 2217
19970 Chironollid larvae 16 667 9158 8B6B
Hean number of organismssample 677 Standard deviation 199
M ean num b I 2er 0 f organIsms AI 580986 Standard deviation 171095
w = 202 SD= 062 SR= 1 10 J= 056
95 C
A-7
STATION 58 Date 18 April 1984 Depth 67 m Salinity (bottom) 00 ppt Temperature (botto) No of samples 15
Frequency Density (nom2) Total occurrence
Taxa number (~) X SD
Nemertea 62 933 35489 26338 Nematoda 224 1000 128218 49903 Turbellaria 9 600 5152 4354 ~nt~sect imni~Q Oligochaeta
1 79
67 1000
572 45220
2217 23506
bnQgYRhY~ Yi~~nE ~Q(~i~Y nil~ni Ostracoda
2 10 19
67 533 600
1145 5724
10876
4434 6214
10989 ~Q[QeniY sectQOiHarpacticoida
30 2
B67 133
17172 1145
12142 3021
Heleidae larvae 6 333 3434 5430 Chironomid larvae 9 400 5152 7B1 5 Chironomid pupae 2 133 1145 3021
Mean number of organismssample 303 Standard deviation 94
I 11 ean num ber 0 f organlsms 2 260442 Standard deviation 81043
H= 233 SO= 070 SR= 1 36 J= 063
97 C
A-B
Frequency Density (nolm 2) Total occurrence -----------------
Taxa number (7) X SD
Nemertea 16 467 9158 10989 Nematoda 266 1000 152258 54541 Turbellaria 23 600 13165 15518 ~l~nH ~Q~iQH 2 133 1145 3021 Oligochaeta 181 1000 103604 56532 bi~hQg~Qn~~ ~it~l~ ~QtQifg mli~lsectisectOstracoda
3 59 15
200 1000 733
1717 33772 8586
3555 23054
7256 ~Q[QQhiY HmQtlsect ~Q[QehiYm sect21tlfQ[lg EQlQQQt~i hQ~i
466 3 1
1000 200 67
266738 171 7 572
75094 3555 221 7
Harpacticoida 30 400 17172 40402 Chironomid larvae 10 533 5724 6214
Mean number of organismssa_pIe 717 Standard deviation 143
I 2Mean number 0 f organlsms m 615330 Standard deviation 122532
H= 226 SO= 072 SR= 119 J= 061
STATION 55 Date 18 April 1984 Depth 30 1ft
Salinity (bottom) 00 ppt Temperature (bottom) 93 C No of SaIIples 15
A-9
STATION 45 Date 4 Hay 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 103 C No of samples 10
Frequency Density (noI2) Total occurrence ---------------- shy
Taxa number (Xl X SD
Neutoda 269 1000 230963 167296 Turbellaria 1 100 859 2715 ~u~yuti Q~iQ ~Ub imni~Q
1 2
100 100
859 171 7
2715 5430
j2~Qn flec Oligochaeta
28 169
BOO 1000
24041 145103
19326 74351
~igeYk~ll iulCIDai ~Q(Qi~Y uini Ostracoda
32 4 5
aoo 400
400
27475 3434 4293
22463 4434 6071
biQQ~~tbt sp ~e(QQbYm mQoi sectampQeD ~nQDisect Chironomid larvae
25 2
578 2
900 200
1000 200
21465 1717
496271 171 7
15279 3620
293820 3620
Mean number of organismssample 111 8 Standard deviation 522
11 b f I 2ean num er 0 organIsms m 95991 5 Standard deviation 447842
H= 193 SD= 065 SR= 118 J= 052
A-10
STATION 18 Date 4 Hay 1984 Depth 34 II
Salinity (bottom) 00 ppt Temperature (bottom) 104 C No of saMples 10
Frequency Density (noI 2 ) occurrence ----------------shy
Taxa (X) X SD
Nemertea 10 600 8SB6 10709 Nuatoda 153 1000 131366 47899 Turbellaria 8 600 6869 6773 ~n1b limnpoundQl Oligochaeta
11 147
700 1000
middot9445 126214
9449 6231 7
~i~g~kXl in1(m~i ~g(2iY OiOi Ostracoda
86 4 1
900 300 100
73840 3434 859
61543 6003 2715
bimoQpoundx1b( sp ~2(QQbiYm mgoiDi ptera adult
3 57
3
300 900 300
2576 48940
2576
4147 21815 4147
Chironomid larvae 4 300 3434 6003 Chironomid pupae 1 100 859 2715
Hean nUMber of orQanismssample 489 Standard deviation 160
b f 2nean nUll er 0 organIsms II 418997 Standard deviation 137721
H= 243 SD= 076 SR= 1 34 J= 066
A-l1
STATION 5B Date 4 Hay 1984 Depth 61 bull Salinity (botto~) 00 ppt Temperature (bottom) 110 C No of suples 10
Frequency Density (nom 2) Total occurrence ---------------- shy
Taxa number (X) X SD
Neertn 41 1000 35203 21206 Nematoda 211 1000 181165 53305 Turbellaria 4 200 3434 7240 Oligochaeta 89 1000 76415 32240 ~i~2~~~11~ iU1(~i~bi1begygny YitQ ~e(biYl ~OiDi OstracDda
4 3
20 1
400 200 BOO 100
3434 2576
17172 859
4434 5795
19829 2715
biue~1bt~ sp ~2(egniY Imeoi sectg11g1O OdD Helei dae larvae
5 32
1 1
400 900 100 100
4293 27475
859 859
6071 18010 2715 2715
Chironomid larvae 7 400 6010 9096
Mean number of organismssample 419 Standard deviation 93
b f 2ean nUll er 0 organIsms m 359753 Standard deviation 79875
H= 221 SD= 068 SR= 138 J= 060
A-12
Frequency Density (nolm 2) occurrence -----------------
Taxa (X) X SD
Nemertea 23 900 1974S 15171 Neutollorpha 1 100 859 271 5 Nellatoda 269 1000 230963 69923 Turbellaria 10 600 8586 991 4 ~~xYnki Q~ampiQ 4 300 3434 6003 ~nb limnipoundQl Oligochaeta
1 79
100 1000
859 67829
2715 40363
~i~Q~kXl io[~i biDe9XQDX ~i[~OBi valvi a
11 3 1
800 300 100
9445 2576 859
6335 4147 271 5
~Q[~poundY mnil~n bimoQampXD[ sp ~Q[QabiY lQO Harpacticoida
18 2
159 1
700 200
1000 100
15455 171 7
135659 859
13904 3620
54272 2715
Chironomid larvae 2 200 171 7 3620 Trichoptera larvae 1 100 859 2715
STATION 55 Date 4 May 1984 Depth 21 m Salinity (bottom) 00 ppt Temperature (bottom) 107 C No of suples 10
Mean number of organismssamples 594 Standard deviation 147
Mean number of organismsm2 501422 Standard deviation 126525
H= 219 aD= 069 SR= 1 63 J= 055
A-13
STATION 45 Date 17 May 1984 Depth 61 m Sal i ni ty (bottom) 01 ppt Temperature (bottom) 121 C No of sampl es 10
Frequency Total occurrence
Taxa nUlllber (7)
NelDertea 1 100 859 2715 Nematoda 163 1000 139952 127996 Polychaeta 1 100 859 2715 ~~~n~h~ imni~Qs Hobsonia florida
2 6
200 600
171 7 5152
3620 4434
Oligochaeta 329 1000 282479 13291 8 ~~lQQYsectk~~12 in~~rmQi 57 900 48940 33142 ~Qr~ipound~2 ffi2niDi 6 500 5152 6003 Ostracoda 5 200 4293 10898 bimDg~yth( SPa 13 600 11162 12176 ~Q(Qebi~m sectQDisect Harpacticaida
2 2
200 100
1717 1717
3620 5430
2poundQttQD poundDQDsectisectDiptera adult
296 1
1000 100
254146 859
172633 271 5
Mean number of organismssample 884 Standard deviation 326
b f I 2nean num er 0 organlss m 759002 Standard deviation 280131
H= 209 SD= 071 SR= 1 33 J= 055
A-14
STATION 18 Date 17 May 1984 Depth 30 m Salinity (bottom) 00 ppt Temperature (bottom) 122 C No of samples 12
Frequency Density (nom2) Total occurrence -----------------
Taxa number (X) X SD
Nematoda 50 833 35775 22815 ~ntb limnipoundQl 3 Oligochaeta 97
250 833
2147 69404
3883 48495
~igQ~~k~ intr~ 27 ~QrQipoundY mnin~i~ 5
667 333
19319 3S7S
19068 5740
Ostracoda 1 83 716 2479 bimnQpound~nr sp 5 ~Q(Q~bY ~mQni S4 ~Q(Q~niY ~QinipoundQ(n 3
333 833 250
3578 60102
2147
5740 43780 3883
fgnQ2Q(i bQ~i 1 sectpoundQtgO poundnQn~i 2 Chironomid larvae 4
83 167 250
716 1431 2862
2479 3342 5592
Mean number of organismssample 235 Standard deviation 116
nean nURl b er 0 f organlslls II 2 201771 Standard devi ati on 99221
H= 236 SD= 075 SR= 1 35 J= 066
A-15
STATION 58 Date 17 May 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) 123 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nemertea 2 100 171 7 5430 Nematoda 75 1000 64395 34404 ~~2Qih~a limQi~Q 2 200 171 7 3620 Oligochaeta 60 1000 51516 33376 ~~igQY~~~12 iQ~[~~gi 2 200 171 7 3620 bitQQ9~Bh~sect Yr~Qsect 3 200 2576 579~
gQ[Qi~Yl ID2Dil~nsectisect Ostracoda
6 6
500 400
5152 5152
6003 8295
binQ~~nr[ sp gg[QQOYm mQQsect sect~QttQn 5n2Q~nsectia Chironomid larvae
2 34
1 1
200 1000
100 100
171 7 29192
859 859
3620 12927 271 5 2715
Mean number of organismssample 194 Standard deviation
2Mean nurn ber 0 f organIsms fA 166568 Standard deviation 56259
H= 225 SD= 072 SR= 1 45 J= 063
A-16
66
STATION 55 Date 17 May 1984 Depth 24 II
Salinity (bottom) 00 ppt Telllperature (bottom) 126 C No of samples 10
Total Frequency occurrence
Taxa nUllber (X) X SD --------------------------------------------------------------~-----------
Nematollorpha 2 200 171 7 3620 Nematoda 63 1000 54092 35297 Oligochaeta 94 1000 80708 44004 ~~iQQY~k~~l iQt~(m~Qi bitnQg~Qh~~ Yi[~Q gQ[QipoundY~ mni~Q~i Ostracoda
10 9 4 2
600 800 300 100
8586 7727 3434 171 7
9050 4874 6003 5430
bimnQ~~ln~[e sp ~Q(QQbiYm mQD ~Q[QQbiYm 2inipoundQ[n~ Chironomid larvae
6 142
3 1
600 1000 200 100
5152 121921
2576 859
4434 50682 5795 2715
Mean number of organismssample 336 Standard deviation 62
2Mean num ber 0 f organisms m 288490 Standard deviation 53421
H= 214 SD= 071 SR= 119 J= 062
A-17
STATION 45 Date 1 June 1984 Depth 61 m Salinity (bottom) 01 ppt Temperature (bottom) 139 C No of samples 10
Total Frequency occurrence
Density (no2)
Taxa nUllber (1) X SD
Nematoda 174 900 149396 132347 Turbellaria 5 200 4293 10898 ~~~QiQ~sect tmQtpoundQ~ ~QQsectQ flQi~sect Oligochaeta ~~iQQysecttygl~ iQl~rm~~i2 ~Q[Qi~~l~ ~~DilgDsectisect Ostracoda
5 20
190 103
12 5
400 900
1000 900
60 (I 400
4293 17172
163134 88436 10303 4293
6071 8095
92563 51524 11304 6071
bimnQpoundytng[ sp ~gQmYsectisect IDg[pound~Qisect ~Q[QQhi~m sectlmQDisect sectpoundQtiQlsectQ pound~Qgsectisect ChironQmid larvae
33 1
10 375
2
900 100 700
1000 200
28334 859
8586 321975
171 7
17196 2715 7010
179201 3620
Mean number of organismssample 935 Standard deviation 254
nurn b 0 f 2lean er organlsms m 802791 Standard deviation 218423
H= 239 SD= 075 SR= 1 22 J= 065
A-18
STATION 18 Date 1 June 1984 Depth 30 AI
Salinity (bottom) 00 ppt Temperature (bottom) 134 C No of samples 11
Frequency Density (no 1m2)
Taxa Total number
occurrence (X)
---------------- shyX SD
Turbellaria 14 636 10928 1157 7 ~~~Qltlg~ ilipoundQ~ Oligochaeta
10 178
727 1000
7805 138937
601 6 67913
~~iQQy~tY~l~ ill~[m~Qi~ 122 636 95227 93619 ~Q[Qipound~ l~i~lsectisect Ostracoda
7 1
455 9 1
5464 78 1
6946 2589
billQylhg[ Spa 16 818 12489 10420 GQ[QQQil HQi~ 139 1000 108496 70934 gQ[Qebi secteiifQ[~ sectQiiQi2 ~Q~sectisect Diptera pupae
1 2 1
9 1 182
11 1
781 1561 781
2589 3473 2589
Chironomid larvae 2 182 1561 3473
Mean number of organismssample 714 Standard deviation 284
nean num b er 0 f organlsms m 2 612728 Standard deviation 244249
H= 232 SD= 075 SR= 1 25 J= 063
A-19
STATION 58 Date 1 June 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 138 C No of samples 10
Frequency Density (noI 2 ) Total occurrence
Taxa number (X) X SD
Nematoda 173 1000 148538 47383 Turbellaria 3 300 2576 4147 Oligochaeta 53 1000 45506 32139 ~giQgY2k~g~ ini~[m~Qi~ bQg91YehY2 Yi[~nsect ~Qr~i~Yl m~nl~n~i
26 1
10
600 100 500
22324 859
8586
3391 2 2715
13424 bimnQpound~Q~[ sp ~Q9~m[Y poundgnitYpoundQlysect ~QtQehiYm ~lQni
4 1
46
200 100
1000
3434 859
39496
8295 2715
22243 Chironomid larvae 1 100 859 271 5
Mean number of organismssample 318 standard deviation 103
M b f I 2ean num er 0 organlsms III 273035 Standard deviation 88842
H = 1 99 SD= 065 SR= 1 08 J= 060
A-20
STATION 55 Date 1 June 1984 Depth 27 m Salinity (bottom) 00 ppt Temp era t u r e (b 0 t tom) 140 C No of samples 10
Frequency Density (nom 2 ) Total occurrence
Taxa nueber (X) X SD
Nematoda 157 1000 134800 69524 Turbellaria 9 400 7727 13696 tlHl~lk ~2~~iQH 1 100 859 2715 Oligochaeta 49 1000 42071 32745 ~~iQQysect~gl~ S[l9sect bHbQghQb~~ Yirl~
10 1
400 100
8586 859
12799 2715
tQ[Qpoundls l2lilUsect bilQHSbg[ sp ~QrQQbil nllQisectHarpacticoida
4 7
134 1
400 500
1000 100
3434 6010
115052 859
4434 7069
44742 271 5
sectpoundQUQlls poundsQgn~sect Chironomid larvae
1 1
100 100
859 859
271 5 2715
Hydracarina 1 100 859 2715
Hean number of organismssample 376 Standard deviation 132
M b f 2ean num er 0 organIsms m 322834 Standard deviation 113127
H= 202 SD= 068 SR= 1 40 J= 055
A-21
STATION 45 Date 18 June 1984 Depth 67 m Salinity (bottom) 01 ppt Temperature (bottom) 149 C No of samples 10
Frequency Density (nom2)
Taxa Total nUllber
occurrence ex) i SD
Nematoda 109 1000 93587 3891 7 Turbell ari a 3 200 2576 5795 ~g~tbg limoipoundQl Q~Qni2 fQ(i~2 Oligochaeta ~gigQ~~Y inl[ggi ~Q[QiSY2 moilo Ostracoda
3 2
194 44
7 3
200 200
1000 1000 200 200
2576 171 7
16656B 37778 6010 2576
5795 3620
118364 36020 12831 5795
bimoQampl~n~[2 sp ~Q[QQbiYm lmgoi Harpacticoida sectpoundQQ1202 pound2022Osect Chironomid larvae
68 1 1
113 2
900 100 100
1000 200
58385 859 859
97022 171 7
97627 2715 2715
73976 3620
Mean number of organismssa_pie 550 Standard deviation 371
Mean nUll ber 0 f organIsms 2II 472230 Standard deviation 318519
H= 242 SD= 077 SR= 1 32 Ja 065
A-22
STATION 18 Date 18 June 1984 Depth 34 m Salinity (bottom) 00 ppt Temperature (bottom) 155 C No of samples 10
Frequency Density (nom 2) Total occurrence ----------------shy
Taxa nUlber (Z) X SD
Neutoda 291 1000 249853 138826 Turbellaria 1 100 859 2715 ~~n~~nki~ sectQ~~iQ~2 ~g~ntbg2 limni~Q9 Oligochaeta
1 3
123
100 300
1000
859 2576
105608
271 5 4147
48240 ~~igQY~~~~9 int~(mgii ~Q[~i~~~ mini~ni bimnQ~ylbg(~ Spa
67 6 5
1000 500 400
57526 5152 4293
40485 6003 6071
~Q(QebiYm ~imQnisect Harpacticoida
80 2
1000 200
68688 171 7
41276 3620
sect~QttQini ~2nig~n~i Chironomid larvae
2 4
200 300
171 7 3434
3620 6003
Mean number of organismssample 585 Standard deviation 194
I 2Mean urn b er 0 f organIsms m 502281 Standard deviation 166943
H= 203 SD= 068 SR= 1 20 J= 057
A-23
STATI ON 58 Date 18 June 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (noI 2) Total occurrence
TaKa number (X) X SD
Nellertea 2 100 1717 5430 Nematoda 160 1000 137376 6361 1 Turbellaria 4 400 3434 4434 Oligochaeta 36 1000 3091 0 14705 ~iQQYik~ Q1rQ 4 300 3434 6003 bitnQgl~ebysect YrDsect ~Q[QiY~ ~~nni biQQpoundY1h[ sp ~Q[Qeng ~ilQD Chironomid larvae
3 1 3
61 1
300 100 300
1000 100
2576 859
2576 52375
859
4147 2715 4147
1428 1 2715
Chironollid pupae 1 100 859 271 5
Mean number of organismssample 276 standard deviation 72
nean nurn b er 0 f organIsms I 2 236974 Standard deviation 61410
H = 1 78 SD= 060 SR= 1 23 J= 051
A-24
STATION 55 Date 18 June 1984 Depth 18 m Salinity (bottom)1 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (no 1m2) occurrence
Taxa (X) X SD
Nematoda 160 1000 137376 43967 Turbellaria 1 100 859 271 5 Oligochaeta 61 1000 52375 31985 ~~iQQY~kY~~ int~[mQi~ ~Q[Qipound~l~ m~nini~ biIDnQ~Ylb[s sp
3 3 3
300 300 300
2576 2576 2576
4147 4147 4147
~Q[Q~bi~ ~slIDQni~ Chironomid larvae
85 6
1000 600
72981 5152
34165 4434
Mean number of organismssample 322 Standard deviation 75
2Mean number 0 f organIsms m 276469 Standard deviation 64099
H= 178 5D= 065 SR= 0B4 J= 059
A-25
Frequency Density (no2) occurrence -----------------
Taxa (7) X SD
Nematoda 104 1000 89294 47409 Turbell ar i a 1 100 859 2715 ~~~nQ~sect imni~Q~ tjQQsectQlis flQig~ Oligochaeta
2 1
297
100 100
1000
171 7 859
255004
5430 271 5
146273 ~~i~QYsect~Y~lls ilr2is gQrQi~y~ IDDilDia
24 4
600 300
20606 3434
27212 6003
Ostracoda 2 200 171 7 3620 biDQSy~b~C~ sp M~QYsectisect m~r~~Qi ~QrQeniy QD Harpacticoida
157 1 1 1
900 100 100 100
134800 859 859 859
73197 2715 2715 2715
sectpoundQttQDs SsDQD 113 900 97022 61656
STATION 45 Date 2 July 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) No of samples 10
172 C
Mean number of organismssample 708 Standard deviation 339
M ean num b er f 20 organisms 607889 Standard deviation 290B22
H= 216 SD= 073 SR= 1 27 J= 058
1-26
STATION 18 Date 2 July 1984 Depth 24 WI
Sal inity (bottom) 00 ppt Temperature (bottom) 172 C No of samples 10
--------------------------------~-----------------------------------------Frequency Density (nom2)
Total occurrence Taxa number (7) X SD
Nematoda 202 1000 173437 113532 ~~~nih~sect mnpoundQ~ Oligochleta
4 102
400 1000
3434 87577
4434 54873
~~igQYsect~Y~12 inl~rmgi2 ~Q[~poundYl~ m~ni~nsectisect bimnQpoundylh~[~ Spa
115 4
15
900 300 900
98739 3434
12879
100720 6003 9274
~Q[QQniY~ sect~QDi~ 55 900 47223 40525 Harpacticoida 1 100 859 2715 sectpoundQiiQlD SDg~DEisect Chironomid larvae
2 6
200 400
1717 5152
3620 7240
Hymenoptera 1 100 859 2715 Hydracarina 1 100 859 2715
Mean number of organismssample 508 Standard deviation 253
2Mean num ber 0 f organIsms m 436169 Standard deviation 217580
H= 225 SD= 074 SR= 1 22 J= 063
A-27
STATION 58 Date 2 July 1984 Depth 58 1
Salinity (bottom) 00 ppt Temperature (bottom) IBO C No of samples 10
Frequency Density (no2) Total occurrence
Taxa number ltX) i SD
Nematoda 151 1000 129649 42729 Turbellaria 1 100 859 2715 01 i gochaeta 41 1000 35203 22698 ~~i~e~~~ int~~m~~ 3 200 2576 5795 btbQglYRhY~ Yir~n~ ~e~~ampy mni~niii bimQeamp~tb~ sp ~e~eQhiY ~mQni Chironomid larvae
1 4 2
68 1
100 300 200
1000 100
859 3434 171 7
58385 859
271 5 6003 3620
1557 1 2715
Mean number of organisassample 272 Standard deviation
I 2Mean num ber 0 f organIsms I 233539 Standard deviation 62546
H = 1 69 SD= 061 SR= 099 J= 053
A-28
73
STATION 55 Date 2 July 1984 Depth 15 III
Salinity (bottom) 00 ppt Temperature (bottom) 182 C No of samples 10
Frequency Density (nom2) occurrence
Taxa (X) X SD
Nematoda 184 1()00 157982 5264B Turbellaria 1 100 859 271 5 Oligochaeta ~~iQQ~sect~Y~ll~ n~[~~Qi~ bitnggYQDYsect Yi[~nsect ~QrQipoundM2 m2ni~nsectisect bimnQpoundYn~[2 sp ~QrQQhiM Qni Harpacticoida
91 2 1 B 2
96 2
1000 200 100 500 200
1000 200
78133 171 7 859
6869 171 7
82426 1111
26058 3620 271 5 1890 3620shy
25980 3620
ChirDnomid larvae 5 400 4293 6071 Chironolllid pupae 1 100 859 2715
Mean number of organismssample 393 Standard deviation 53
2t1ean nUllber Df organlsms III 337430 Standard deviatiDn 45080
H= 187 SD= 067 SR= 116 J= 054
A-29
STATION 45 Date 17 Jul y 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (X) X SD
Nematoda 215 1000 184599 45837 ~~n~b~~ imDipoundQ Qe~Qni fllHi2
3 1
300 100
2576 859
4147 2715
Oligochaeta 305 1000 261873 147955 ~~iQQY~k~ in~rm~2i ~Qr~ipoundYl IDniln~i~ Ostracoda
17 1 2
500 100 200
14590 859
171 7
22554 2715 3620
bmnQpound~ihr sp ~QCQQhiY ~lQD~
176 1
1000 100
151114 859
57125 2715
Harpacticoida 4 300 3434 6003 sectQ~~Qn poundnQnai~ Chironomid larvae
91 5
1000 400
78133 4293
61310 6071
Mean number of organismssample 821 Standard deviation 275
M b f 2ean num er 0 organlsms m 70491 1 Standard deviation 236369
H= 215 SD= 073 SR= 114 J= 060
A-30
STATION 18 Date 17 Jul y 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom 203 C No of samples 10
Frequency Density (001 2 Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 339 1000 291065 119140 Turbellaria 3 200 2576 5795 ~~2~b~~ limnipoundQ12Oligochaeta
4 18S
300 1000
3434 161417
6003 89393
~~iQQy~~~ls in~(ID~Qi bim~Qampy~bg(2 Spa
34 16
800 700
29192 1373B
22967 15252
~g(gebi~m ~21mQni2 Harpacticoida
52 3
1000 200
44647 2576
25212 5795
2ampQ11Q1202 ampS02Qg~2i2 Chironomid larvae
18 10
700 700
15455 8586
13904 701 0
Mean number of organi$mssample 667 Standard deviation IBB
H ean nurn b er 1 20 f organIsms m 572686 Standard deviation 161750
H = 1 99 SD= 065 SR= 090 J= 060
A-31
STATION 58 Date 17 July 1984 Depth 55 AI
Salinity (bottom) 00 ppt Temperature (bottom) 197 C No of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nellatoda 173 1000 14853B 66390 Turbellaria 1 100 859 271 5 ~~~n~hu ini~QA Oligochaeta
1 46
100 1000
859 39496
2715 26293
~gipoundQy~~ygl2 in~rJg~i~ b1nQglYRnY~ Yi( Bivalvia
6 2 1
400 200 100
5152 1717 859
8295 3620 271 5
ei~ IDnH~n~i~ 2 200 171 7 3620 Ostracoda 1 100 959 271 5 biIDQHlh~( Spa ~Q(QRbim ~21Qnisect Diptera pupae
1 94
1
100 1000 100
859 80708
859
2715 35332 2715
Heleidae 1arvae 5 500 4293 4525 Chironomid larvae 1 100 859 2715
Mean number of organismssample 335 Standard deviatiDn 113
Mean number of organismsRI2 287631 Standard deviation 97413
H= 1 86 SO= 064 SR= 155 J= 049
A-32
STATION 55 Date 17 July 1984 Depth 18 m Sali nity (bottom) 00 ppt TeAlperature (bottom) 199 C No of samples 10
Frequency Density (nom2 ) occurrence
Taxa (X) x S D
Nematoda 61 1000 52375 33972 Turbellaria 1 100 859 2715 Oligochaeta 24 900 20606 11590 ~~i2QY~k~~1 iOi[2 bimDQ~xlb~r sp ~Q[QQhi~ sectgni~ Chironomid larvae
3 1
38 3
200 100
1000 300
2576 859
32627 2576
5795 2715
19326 4147
Mean number of organismssample 131 standard deviation 54
M b f 2ean num er 0 organIsms 112477 Standard deviation 46757
H= 184 SD= 066 SR= 085 J= 065
bull
A-33
STATION 45 Date 1 August 1984 Depth 58 m Sal i nity (bottoll) 03 ppt Temperature (bottom) 203 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa nUllber (X) X SD
Nematoda 145 1000 124417 52344 Turbellaria 1 100 859 2715 Mmth~sect iHpoundQ~ Q~~Qi ilQ[i9Oligochaeta
5 3
196
500 300
1000
4293 2576
168286
4525 4147
91064 ~igQYsect~~li int9i Ostracoda
2 3
100 300
171 7 2576
5430 4147
bimnQpoundtl sp ~Q[Q2hiY sectlQni~
240 6
1000 600
206064 5152
73526 4434
sectpoundQtQl poundngnai~Helei dae larvae
1862 1
1000 100
1598713 859
966134 271 ~
Mean number of organismssample 2464 Standard deviation 1156
211 ean num ber 0 f organIsms II 2115590 Standard deviation 992518
H= 124 SD= 041 SR= 089 J= 036
A-34
STATION 1S Date 1 August 1984 Depth 24 II
Salinity (bottom) 00 ppt Temperature (bottom) 198 C No of samp I es 10
Frequency Density (nom2) occurrence ---------------- shy
Taxa (X) X S D
Nuertea 1 100 859 2715 Nellatolllorpha 1 100 859 2715 Nematoda 248 1000 212933 108288 Turbellaria 4 400 3434 4434 ~untb~la Hli~g Oligochaeta
4 206
400 1000
3434 176872
4434 75309
~~igQYli~dli i[t~(gi~ ~QtQpound l binQ~ybt2 sp ~2l~bi Q[i ~2tlgtQ(ila tirisect sectpoundQtel poundl9lla Chironomid larvae
10 1
20 205
1 574
9
500 100 800
1000 100
1000 400
8586 859
17172 176013
859 492836
7727
10709 271 5
14021 48104
271 5 150531
13696
Mean number of organismssample 1284 Standard deviation 290
M b f I 2ean nurn er 0 organIsms III 1102442 Standard deviation 2488B5
H= 211 SD= 071 SR= 1 16 J= 057
A-35
STATION 58 Date 1 August 1984 Depth 55 m Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samp 1es 10
Frequency Densi ty _ ltnom2 ) Total occurrence
Taxa number (7) X SD
Nemertea 1 100 859 2715 Nematoda 22 900 18889 15036 Turbellaria 1 100 859 2715 Oligochaeta 19 700 16313 17385 biiQQgl~QhY~ YiCg~~ 2 200 171 7 3620 ~Q[~i~~l~ m2nil~n2i2 ~Q[QehiYm ~lmQni2
4 164
300 1000
3434 140810
6003 103048
Heleidae larvae 8 500 6869 8868
Mean number of organismssample 221 Standard deviation 111
I 2Mean num ber 0 f organIsms m 189751 Standard deviation 95391
H = L 37 SD= 043 SR= 090 J= 046
A-36
STATION 55 Date 1 August 1984 Depth 15 m Salinity (bottoll) 01 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (i ) X SD
Nemertea 1 100 859 2715 Neutoda 122 1000 104749 7394B Turbellaria 4 300 3434 6003 ~~~~~nt~ secte~poundQa~ Oligochaeta
1 118
100 1000
859 101315
2715 61223
~giQgY~k~~l iot~[m~Qi btbQg~2b~ Y[O ~grQipound~ ~nl~ni b~ngpound~tb~[ Spa
3 1 5 1
200 100 500 100
2576 859
4293 859
5795 2715 4525 2715
~Q[QebiYm ~mQoi sect~QttQ~ ~OQOi Heleidae larvae
42 2 2
800 200 100
36061 171 7 171 7
21341 3620 5430
Chironomid larvae 4 400 3434 4434
Mean number of organismssapIe 306 Standard deviation 169
M b f I 2ean nurn er 0 organIsms m 262732 Standard deviation 145101
H = 198 SD= 067 SR= 1 45 J= 054
A-37
~-- --------------~~-------------
STATION 45 Date 17 August 1984 Depth 61 1
Salinity (bottom) 10 ppt Temperature (bottom) 210 C No of samp 1es 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nematoda 240 1000 206064 130213 ~~h~sect limQ tjQ~~Hi~ fQ[i~~ Oligochaeta
31 2
245
400 100
1000
26617 1717
210357
75228 5430
121374 babgglYQbl~ Yi[~sect 1 100 859 2715 Ostracoda 1 100 859 271 5 biQ~xtb~[ Spa ~~Q~~isect ~[pound~Qisect ~Qgebi HQOi
333 2
143
1000 200
1000
28591 4 171 7
1227BO
106553 3620
106860 sectpoundQUg~ poundg~nsectisect 1738 1000 1492247 68441 7
Mean number of organismssample 2736 Standard deviation 944
M b f I 2ean num er 0 organlslls m 2349130 Standard deviation 810600
H= 172 SD= 056 SR= 079 J= 052
A-38
STATION 18 Date 17 August 1984 Depth 27 III
Sal i ni ty (botto) 01 ppt Temperature (bottom) 214 C No of samples 10
Frequency Density (nom 2 ) occurrence
Taxa (X) X SD
Nematoda 186 1000 159700 62468 ~tgt SPa 2 100 171 7 5430 Turbellaria 8 400 6869 8868 ~~ntbg2 imnipoundQ 12 700 10303 11304 Oligochaeta 283 1000 242984 90509 ~~iQQY~~Y~lls inlgtmggisBivalvia
4 1
400 100
3434 859
4434 271 5
~Qt~i~Y nilnsectisectbimnQpoundttbg[s SPa ~QtQQbi~ islmQDi2
1 17
286
100 900
1000
859 14596
245560
271 5 10747 83461
sectpoundetteln poundDsggnsectisect Chironomid larvae
526 4
1000 3Q0
451624 3434
179610 6003
Mean number of organismssapIe 1330 Standard deviation 162
Mean nurn ber I 20 f organIsms m 1141938 Standard deviation 139389
H= 214 SD= 073 SR= 1 06 J= 060
A-39
STATION 58 Date 17 August 1984 Depth 55 II
Salinity (bottom) 01 ppt Temperature (bottom) 220 C ND of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (7) x S D
Nematoda 68 1000 58385 27689 Turbellar i a 4 200 3434 8295 Oligochaeta 19 800 16313 13084 ~~i~Q~k~~l~ in~~[m~i bitUQ9Y2bYa Yi[~na Bivalvia
3 3 4
300 300 300
2576 2576 3434
4147 4147 6003
gQ[QipoundYl~ mnilDa 1 100 859 2715 binQpoundY~[ sp gQ[Q2UY a~mgnia sect~Qtgl~n ~n~~ni
2 338
6
100 1000 400
171 7 290207
5152
5430 56636 7240
Mean number of organismssample 448 Standard deviation 72
W b f 2lean num er 0 organlsms II 384653 Standard deviation 61988
H = 1 27 SD= 041 SR= 1 02 J= 038
A-40
STATION 55 Date 17 August 1984 Depth 18 m Salinity (bottom) 00 ppt Temperature (bottol) 223 C No of samples 10
Frequency Density (nom 2 ) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 291 1000 249853 118104 Turbellaria 1 100 859 2715 M~ntb~ mni~Q Oligochaeta
1 47
100 1000
859 40354
2715 28347
~~iQQ~sectkY~ll int~[m~gi bitbQQ1YSDY Yi(gn Bivalvia
25 12
6
900 500 400
21465 10303 5152
1231 0 18459 7240
~Q~2ipoundY mnil~ni Ostracoda
11 8
400 600
9445 6869
12442 6773
bmnQpoundYb~r~ SPa 52 1000 44647 19746 ~QrQsbY lmgnisectsQiielo snQ~ni~ Chironomid larvae
43 5
15
1000 400 BOO
36920 4293
12879
21436 6071 8344
Mean number of organismssample 517 Standard deviation 174
M b f I 2ean num er 0 organlsms m 443896 Standard deviation 149431
W = 228 SD= 065 SR= 1 33 J= 062
A-41
STATION 45 Date 29 August 1984 Depth 55 III
Salinity (bottom) 07 ppt Temperature (bottom) 199 C No of samples 10
Frequency Density (noI 2) Total occurrence
Taxa number (X) X SD
Nematoda 192 1000 164851 98380 ~sntbsect limnipoundQlDligochaeta
2 198
200 1000
171 7 170003
3620 67339
~Q[eipoundYls msniln~isect Ostracoda
1 4
100 400
859 3434
2715 4434
bimnQpoundytb[s Spa gQ[Qeniy sect21QOi~ sectpoundQttQlsO poundsOsggOi
164 87
2468
1000 1000 1000
140810 74698
2119025
39283 39460
840890
Mean number of organismssample 311 6 Standard deviation 101 1
ill b f 2nean nUll er 0 organIsms 2675398 Standard deviation 8682B8
W= 116 SD= 036 SR= 060 J= 039
A-42
STATION 18 Date 29 August 1984 Depth 30 bull Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samples 10
Total Frequency occurrence
Densi ty 2
(nom )
Taxa number (~ ) x S D
Nematoda 150 1000 128790 28905 Turbellaria 7 400 6010 9096 ~nh imni~Qj Oligochaeta ~~i~2Y~k~~1 ini~CIDgii bih2g~Qb~ Yi(~U2 Bivalvi a
B 145
1 1 2
600 1000
100 100 200
6869 124497
859 859
171 7
677 3 84732
271S 2715 3620
~Q[Qi~yli miDllgni bimn2pound~ih~C sp ~QtQehiY imQUia Harpacticoida
7 7
265 1
500 300
1000 100
6010 601 0
227529 859
8145 10747
139462 2715
sect~QtiQDi ~Q~Q~i~ Chironomid larvae
2471 2
1000 200
2121601 171 7
1063112 3620
Mean number of organismssample 3067 Standard deviation 121 9
2Mean number 0 f organIsms m 2633326 standard deviation 1046718
H = 1 09 SD= 034 SR= 1 04 J= 029
A-43
STATION 58 Date 29 August 1984 Depth 55 111
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (noI 2 ) Total occurrence -----------------
Taxa nUllber (X) X SD
Nemertea 4 400 3434 4434 Nuatoda 64 1000 54950 25016 Turbellaria 9 400 7727 11047 ~Hl~b limli~Q19 Oligochaeta
1 37
100 1000
859 31769
2715 19006
i~Qyh il(~~ bHtlQSlheln Yl Bivalvia
4 4
20
200 300 400
3434 3434
17172
8215 6003
26541 ~e(ijY l bQ~dlH sp
26 1
700 100
22324 859
25662 2715
~Q[QQhil iQ sectjgUell HD Heleidae larvae
418 20
1
1000 800 100
358895 17172
859
129443 12799 271 5
Mean number of organismssample 609 Standard deviation 175
nean num b er 0 f organIsms 1 111 2 522887 Standard deviation 150164
H= 176 SD= 051 SR= 1 30 J= 047
A-44
I I
I
I
STATION SS
Date 29 August 1984 Depth 21 1
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (no2) Total occurrence
Taxa nUllber (X) x S D
Nematoda ISO 1000 128790 37969 Turbellaria 1 100 859 271 5 Oligochaeta 48 1000 41213 16088 ~i~g~sect~~l iQ~~mgi bi~QQg~gb~sect ~i~nsect
10 14
600 600
eSB6 12020
9050 14137
Bivalvia 4 200 3434 7240 ~Q[Q~Yl niQaa Ostracoda
15 7
700 SOO
12879 6010
15806 7069
bmQg~~~b~ SPa 14 800 12020 8295 ~g[gaby mgni sect~g~~Qn ~ngnai Chironomid larvae
IB4 25 9
1000 900 700
157982 21465
7727
35563 16810 6335shy
Mean number of organismssample 481 Standard deviation B6
2Mean number 0 f organlsms m 412987 Standard deviation 74131
H= 24S SD= 074 SR= 1 23 J= 068
A-45
STATION 45 Date 14 September 1984 Depth 61 11
Salinity (bottom) 03 ppt Temperature (bottom) IB4 C No of samples 10
---------------------------------~----------------------------------------
Taxa TotalnUlllDer
Frequency occ~~~ence
Density (no 2) -----X-------sect7B
Nematoda 189 1000 162275 85233 t1tQ SPa
Turbellaria 2 2
200 100
171 7 171 7
3620 5430
~~~nIng limoifQl t1QQQDi~ flQriQ Oligochaeta
5 19
142
400 800
1000
4293 1631 3
121921
6071 12442 30504
~QQifYl mDl~D bimoQpoundt1hgr Spa Cumacea
19 184
2
800 1000 200
1631 3 157982
171 7
130B4 69541 3620
~Q[QnniYm ~~lmQDi Harpacticoida
118 1
1000 100
10131 5 B59
43367 2715
sectfQIIQD fOQgO Chironomid larvae
1780 1
1000 100
1528308 859
673586 2715
Mean number of organismssample 2464 Standard deviation 874
M ean num b er f 20 organlsms 2115590 Standard deviation 750305
H= 151 SD= 046 SR= 1 07 J= 041
A-46
STATION 18 Date 14 September 1984 Depth 21 III
Salinity (bottom) 01 ppt Temperature (botto) 182 C No of samples 10
Frequency DenSity (nom 2 ) Total occurrence ---------------- shy
Taxa nUlDber (i) X SD
Nemertea 1 100 859 271 5 Nematoda 186 1000 159700 44925 Turbellaria 16 400 13738 20717 ~~Dth~~ limni~Ql Oligochaeta
13 55
700 900
11162 47223
9096 30085
~Q~ei~Yl nil~Qi~ 17 900 14596 7069 bimDg~lbg[ Spa b 500 5152 6003 ~Q[Q2niY ~lgQi~ Harpacti coi da
562 2
1000 200
482533 171 7
136766 3620
sectpoundQttQ~Q~ ~n~ni 791 1000 679153 324290
Mean number of organismssample 1649 Standard deviation 447
I 211ean nUll ber 0 f organIsms I 1415831 Standard deviation 384136
H= 179 SD= 064 SR= 084 J= 054
A-47
STATION 58 Date 14 September 1984 Depth 58 III
Salinity (bottom) 01 ppt Temperature (bottom) 191 C No of sampl es 10
-------------------------------------------~------------------------------Frequency Density (nom 2 )
Total occurrence Taxa number eX) X SD
Nemertea 1 100 859 2715 Nematoda 55 1000 47223 18658 Turbellaria 10 500 8586 11448
1 100 859 2715 Oligochaeta 41 1000 35203 17850 ~~iQQ~~gll iu1g[m~i ~Q[Q~Yl nilD bimnQ~Y~h[ Spa ~Q[Q~hiYm lmgui sectpoundQilg1D poundU2D Chironomid larvae
4 10
2 277
23 4
100 500 200
1000 700 300
3434 8586 171 7
237832 19748 3434
10861 11448 3620
50561 21051 6003
Mean number of organismssample 428 Standard deviation 51
M b f 2ean num er 0 organIsms III 367481 Standard deviation 43743
H= 179 SD= 055 SR= 114 J= 052
A-48
I I
STATION SS Date 14 September 1984 Depth 21 II
Salinity (bottom) 01 ppt Temperature (bottom) 190 C No of samples 10
--------------------------------------------------------------------~-----
Frequency Density (no1I2) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 102 1000 87577 39200 Oligochaeta 34 700 29192 31142 ~iQ2Y~y1 int(mgi~ bithQgl~en~ Yi(gDsect ~Q(~i~Y m~DilgDsecti~ bimDQamp~1h(sect sp ~2(QQhiY slmQD 2poundQiiQlsD ~sD~g~nsecti Chironomid larvae
36 18 16 17
100 16
3
1000 600 800 700
1000 800 300
30910 15455 13738 14596 85860 13738 2576
157BO 20953 10078 14621 32126 10861 4147
Mean number of organismssample 342 Standard deviation 97
2Mean nUllber 0 f organlsms m 293641 Standard deviation 83617
H= 262 SD= 079 SR= 095 J= 083
A-49
Appendix B--Sediment particle size and organic content of the Cathlamet Bay
benthic invertebrate sites 13 March through 14 September
1984
iii
1
Station 18a 48 54 57
Survey 1 1 1 1
Month March March March March
Day 13 13 13 13
Particle size (mm) Phib Percent by weight
gt 40 -2 000 000 000
20- 40 -1 000 000 000
10- 20 0 000 009 000
05- 10 1 018 1079 032
025- 050 2 545 7583 2468
0125- 025 3 8731 1225 6783
00625-0125 4 491 037 657
lt0625 (5-12) 216 067 060
Organic Content 160 116 128
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
b Phi= -log2(sediment particle diameter in mm)
B-1
Station 18a 48 54 57
Survey 2 2 2 2
Month April April April April
Day 5 5 5 5
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 003 093 000
05shy 10 1 005 31 75 023
025shy 050 2 087 5904 2368
0125- 025 3 6316 750 7155
00625-0125 4 3056 026 427
lt0625 (5-12) 533 052 028
Organic Content 081 077 065
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-2
Station 45 55 58
Survey 3 3 3 3
Month April April April April
Day 18 18 18 18
Particle size (mm)
gt 40
Phi
-2
Percent by weight
000 000 000
20shy 40 -1 000 000 000
10shy 20 0 005 009 004
05shy 10 1 010 027 013
025shy 050 2 015 095 225
0125- 025 3 097 536 6111
00625-0125 4 453 2821 2205
lt0625 (5-12) 9420 6511 1442
Organic Content 31 42 14
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-3
Station 18a 45 55 58
Survey 4 4 4 4
Month May May May May
Day 4 4 4 4
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 021
05shy 10 1 000 065 063
025shy 050 2 012 370 230
0125- 025 3 091 4099 4696
00625-0125 4 322 3650 3052
lt0625 (5-12) 9575 1810 1939
Organic Content 330 180 160
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-4
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
5
May
17
000
000
005
016
217
5862
2729
1170
100
45 55 58
5 5 5
May May May
17 17 17
Percent by weight
000 000
000 000
005 008
113 031
325 274
1903 5613
2784 2401
4870 1672
240 110
000
000
000
010
020
079
397
9494
390
B-5
Station 18al 45 55 58
Survey 6 6 6 6
Month June June June June
Day 6 6 6 6
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 020
05shy 10 1 005 051 027
025shy 050 2 005 301 1 79
0125- 025 3 074 3189 5404
00625-0125 4 599 4118 2885
lt0625 (5-12) 9317 2332 1485
Organic Content 340 240 150
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-6
Station
Survey
Month
Day
Particle size Cmm) Phi
gt 40 -2
20shy 40 -1
10shy 20 a
05shy 10 1
025shy 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
7
June
18
000
000
005
029
138
3917
4143
1768
180
45
7
June
18
55 58
7 7
June June
18 18
Percent by weight
000
000
000
010
020
080
427
9464
310
000 000
000 000
000 007
011 022
057 190
957 5286
3023 2642
5957 1853
1 70 110
B-7
Station 18al 45 55 58
Survey 8 8 8 8
Month July July July July
Day 2 2 2 2
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 006 002 006
05shy 10 1 006 0l3 023
025shy 050 2 017 088 171
0125- 025 3 074 2712 5365
00625-0125 4 552 3892 3081
lt0625 (5-12) 9345 3294 l354
Organic Content 410 210 160
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-8
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
9
July
17
000
000
003
013
130
4294
4434
1127
130
45
9
July
17
Percent
000
000
000
006
012
051
046
9885
290
55
9
July
17
by weight
000
000
019
048
091
628
3616
5597
030
58
9
July
17
000
000
004
022
158
5017
3148
1650
140
B-9
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18al
10
August
1
45
10
August
1
55
10
August
1
58
10
August
1
Percent by weight
000 000
000 004
001 004
009 018
018 088
098 306
049 2510
9824 7070
000
005
045
763
3604
4495
932
156
100 190 060
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-10
Station 18 45 55 58
Survey 11 11 11 11
Month August August August August
Day 17 17 17 17
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000 000
20- 40 -1 005 000 000 000
10- 20 0 021 003 000 210
05- 10 1 064 009 000 159
025- 050 2 226 027 045 2656
0125- 025 3 3259 131 712 3719
00625-0125 4 4327 195 1737 1159
lt0625 (5-12) 2098 9635 7506 2097
Organic Content 210 300 160 100
Ii I
B-11
Station
Survey
Month
Day
Particle size (mm) Phi
gt40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
12
August
29
000
000
012
046
186
3465
4498
17 93
241
45
12
August
29
55 58
12 12
August August
29 29
Percent by weight
000
000
002
009
026
118
189
9656
540
000 000
000 000
003 011
011 028
055 1013
859 5033
1596 1827
7476 2089
1 70 120
B-12
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
_-------------------- shy
B-13
Table 1--Geographic locations of the benthic sampling stations in
Cathlamet Bay
Geographic location Station (Latitude and Longitude) Site Description
18 46 1234 N 123 4252 W Adjacent to Green Dolphin 3 at Wend of North Channel
45 46 1128 N 123 4414 W Center of old Marishytime Basin 600 m N of Corps of Enginshyeers dock
48a 46 1053 N 123 4409 W Adjacent to Can 7 off SW end of Lois Island in South Channel
46 1053 N 123 38 41 W Adj acent to Svensen Island piling jetty W of Red Dolphin 12A
55 46 11 17 N 123 3800 W Adjacent to Red Dolphin 14 at SW end of Minaker Island
46 1300 N 123 3809 W 50 m N of Seal Island in Woody Island Channel
58 46 1354 N 123 4010 W Adjacent to Can 5 in Woody Island Channel [after can was moved (18 July) approxshyimately 300 m Wof can]
a Stations which were replaced during Survey 3
3
stations known to have higher densities --45 55 and 58 respectively
after Survey 2 Higher benthic invertebrate densities would provide better
statistically identifiable relationships between densities and salinity As
a result of the changes in sampling stations only samples from Station 18
were analyzed for Survey 2 (5 April 1984)
Benthic samples were collected by SCUBA divers using a coring device
The sampler was constructed of 385-cm (inside diameter) PVC pipe which
penetrated 15 cm into the sediment thereby collecting a 924 cm3 sediment
sample (Fig 2) The coring device was operated as follows 1) the sampler
was filled with water on the boat to aid in diver descent 2) on the bottom
the diver removed the bottom cap and pushed the sampler into the sediment
until it stopped at the plexiglass plate (15 cm) and 3) the diver placed
his thumb on the top opening (forming a suction) removed the coring device
from the sediment and replaced the bottom cap All samples were taken
within the confines of a square meter aluminum irame
On the boat samples were washed through a 025-mm mesh screen placed
into labeled jars and fixed and preserved in a 4 formaldehyde solution
that contained rose bengal (a protein stain) At the laboratory samples
were washed of the formaldehyde sol ution and sorted with the aid of a 15X
dissecting microscope Invertebrates were identified to the lowest
practical taxon and counted
Initially 16 benthic cores were taken 15 to be used for benthic
invertebrate analysis and 1 for sediment analysis Subsequent statistical
analysis revealed 10 benthic invertebrate cores were sufficient to
adequately describe the benthic communities So after Survey 4
(1 August 1984) 11 benthic cores were collected per station
4
Opening
Top cap
Plexiglass disc c====tt====tt===J
PVC tubing
Bottom cap
1Scm String
Figure 2--Description of PVC benthic invertebrate sampling device
5
Station number date depth bottom salinity and temperature (taken
with a Beckman RS5-3 salinometer and probe1) sample size total numbers
frequency of occurrence and mean number 1m2 are presented in the Results
Besides the above H Shannon-Weaver diversity function (Shannon and Weaver
1963) SD Simpson diversity value (Simpson 1949) SR species richness
(Margalef 1958) and J species evenness value (Pielou 1966) were
calculated The following formulas were used s
1) H= - L Pi 10g2 Pii=1
where Pi= the proportion of individuals belonging to the ith
species
S = number of species s
2) SD= 1 - L Pi2 i=1
where Pi= the proporti on of individual s be longing to the i I th
species
3) SR= (S - l)loge N
where S= the number of species at the station
N= the total number of individuals at the station
4) J= H Ilog2 S
where H= the Shannon-Weaver diversity value
S = the number of species
Sediments were analyzed by seiving those particles lt 00625 mm were
considered the silt-clay fraction Organic content was determined by
burning at 550degC for 24 h
II Reference to trade names does not imply endorsement by National Marine Fisheries Service NOAA
6
RESULTS
Physical and biological data are presented by station in Appendix A A
list of the benthic invertebrate taxa identified during the survey are
presented in Table 1 Appendix B presents the sediment analysis
DISCUSSION
Although the purpose of this study was to obtain base line information
prior to modification of the ship navigational channel caution must be used
in interpreting the data First the MOBILOIL oil spill on 19 March 1984
may have affected the local benthic invertebrate biota Oil started to
occur in the benthic samples on the third survey (18 April 1984) and
continued until the end of the study (14 September 1984) Al though some
stations had more oil than others effects on the invertebrates were not
obvious Secondly year to year variations in benthic invertebrate species
and densities occur in the marine environment (Gray and Christie 1983)
Whether the benthic infauna in Cathlamet Bay varies cyclically is unknown
The long term stability or cycles need to be determined before changes of
the benthic infauna can be attributed to any habitat modification or
dredging proj ect
Salinity is considered to be the most important factor controlling the
distribution of estuarine animals (Kinne 1966) Since we performed our data
collections primarily at low tide the given salinity values must be
considered low values Chapman and Brinkhurst (1981) showed that seasonal
variations of benthic invertebrates in the Fraser River estuary were
correl ated with salini ty One common freshwater oligochaete species in
their study Limnodrilus hoffmeisteri also occurs in Cathlamet Bay Adult
hoffmeisteri can tolerate salinities up to 10 ppt and immatures 14 to
7
Table 1--List of invertebrate taxa found at benthic invertebrate sites
located in Cathlamet Bay Oregon March through September 1984
Coelenterata Hydra sp
Turbellaria Nemertea Nematoda Nematomorpha Oligochaeta
Vejdovskyella intermedia Limnodrilus hoffmeisteri Ilydrilus frantzi
Polychaeta Neanthes limnicola Hobsonia florida Manyunkia speciosa
Gastropoda Lithoglyphys (=Fluminicola)
Bivalvia virens
Corbicula manilensis Ostracoda
Limnocythera sp Mysidacea
Neomysis mercedis Cumacea Amphipoda
Eogammarus spp Eogammarus confervicolus Corophium salmonis Corophium spinicorne Pontoporeia hoyi Eohaustorius estuaris
Isopoda Saduria entomon
Harpacticoida Scottolana canadensis
Insecta Diptera adult Diptera pupae Heleidae larvae Chironomidae larvae Chironomidae pupae Trichoptera larvae Hymenoptera Collembola
Hydracarina
Occurrence not quantified
8
15 ppt (Chapman and Brinkhurst 1980) This species appears to be a useful
salinity indicator and future benthic work should identify and enumerate
this species Due to time and taxonomic expertise requirements only the
oligochaete species Vejdovskyella intermedia was enumerated Salinity
tolerances of this species are unknown
Since intersti tial salinities do not vary dielly as do salini ties in
the water column (Sanders et al 1965) interstitial salinities should have
been measured Al though many infauna species may be exposed to overlying
water because of activity andor tubes (exCorophium spp) many benthic
invertebrates are dependent on interstitial salinity levels Measurements
of interstitial salinities are necesssary to determine benthic infauna
sensitivity to salinity intrusion
Finally there appeared to be a large amount of within station
variability in the sediment texture particularly at Stations 55 and 58
The sediment at Station 55 ranged from a very fine sand to almost all clay
The sediment texture variability at Station 58 was a result of the uS
Coast Guard moving Can 5 to a new location forcing us to estimate the
previous location of our station
ACKNOWLEDGMENTS
We wish to thank Maurice Laird Nick Zorich Larry Davis Roy Pettit
Edward Koller and David Miller for their assistance in developing the
sampling device and collecting the samples We express special thanks to
Sandy Lipovsky Thomas Moylan and Susan Newhouse for helping sort and
identify the invertebrates
9
LITERATURE CITED
Chapman P M and R O Brinkhurst
1980 Salinity tolerance of some selected aquatic oligochaetes Internat
Rev der Gesamten Hydrobio1gie 65499-505
Chapman P M and R O Brinkhurst
1981 Seasonal changes in interstitial salinities and seasonal movements
of subtidal benthic invertebrates in the Fraser River estuary BC Est
Coast Shelf Sci 1249-66
Gray J S and H Christie
1983 Predicting long-term changes in marine benthic communities Mar
Ecol Prog Sere 1387-94
Kinne O
1966 Physiological aspects of animal life in estuaries with special
reference to salinity Neth J of Sea Res 3 227-244
Margalef R
1958 Information theory in ecology Gen Syst 336-71
McCabe G T Jr W D Muir R L Emmett and J T Durkin
1983 Interrelationships between juvenile sa1monids and nonsalmonid fish
in thl Columbia River estuary Fish Bu11U S 81(4)815-826
Pie10u E L
1966 The measurement of diversity in different types of biological
collections J Theor BioI 13131-144
Sanders H L P C Mange1sdorf and G R Hampson
1965 Salinity and faunal distribution in the Pocasset River
Massachusetts Limno Ocean 10216-229
Shannon L E and W Weaver
1963 The mathematical theory of communication Univ of Illinois Press
Urbana Ill
10
Simpson E H
1949 Measurement of diversity Nature 163688
11
APPENDIX A--Descriptive summary of benthic invertebrate data collected in
Cathlamet Bay Oregon during March through September 1984
STATION 18 Date 13 March 1984 Depth 46 m Salinity (bottom) 11 ppt Temperature (bottom) 67 C No of samples 15
Frequency Density (nom 2 ) Total occurrence
Taxa number (7) X SD
Nemertea 2 67 1145 4434 Nematoda 134 1000 76702 33169 Turbellaria 22 667 12593 15854 ~~n~b~~ imnpoundQ 31 Oligochaeta 486
933 17744 1468 1 100() 278186 138779
~QtQif~12 mnil~nsectisect 24 Ostracoda 39
933 13738 8462 800 22324 17715
~Q[QQbiYm ~lmQni~ 74 867 42358 38B70 EQntQIH~i2 Qyi 1 EQri gnQQn 1 Harpacticoida 7
67 572 2217 67 572 221 7
333 4007 7159 Insecta 2 67 1145 4434 Chironomid larvae 20 667 1144 B 10090 Collembola 95 867 54378 82588 Hydracarina 1 67 572 221 7
Mean number of organismssample 626 Standard deviation 19 1
M ean num b er 0 f 2organIsms III 537484 Standard deviation 163579
H= 237 so= 069 SR= 1 42 J= 061
A-l
STATION 48 Date 13 March 1984 Depth 107 m Salinity (bottom) 05 ppt Temperature (bottom) bB C No of sampl es 15
Frequency Densi ty (nom 2 ) Total occurrence
Taxa number (7) X SD
Nemertea 31 6b7 17744 1849 1 Nematoda 38 667 21751 22685 Oligochaeta 4 133 2290 6859 ~QQpound12 2nil~nsectisect 31 Ostracoda 1
667 17744 29648 67 572 221 7
~Q9~~[~ spp 1 ~Q[Q2l ~~lQnisect 1 ~Q2sectiQisect sectisect 4 Harpacticoida 1
67 572 2217 67 572 221 7
200 2290 5097 67 572 221 7
Insecta 2 133 1145 3021 Diptera adult 1 67 572 2217 Collembola 24 467 13738 30923
Mean number of organismssample 93 Standard deviation 59
Mean number of organismsm2 795b4 Standard deviation 50740
H= 255 SD= 079 SR= 1 55 J= 071
A-2
STATION 54 Date 14 March 1984 Depth 177 m Salinity (bottom) 00 ppt Temperature (bottom) 66 C No of samples 15
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nemertea 47 1000 26903 14096 Nematoda 7 267 4007 9102 Turbellaria 9 333 5152 1114B Oligochaeta 11 333 6296 10989 Gastropoda 1 67 572 2217 ~Q(Qi~Yl mnil~n2i~ Ostracoda
199 3
1000 200
11390B 171 7
97165 3555
gQ[Qehiy sectlmQnisect Harpacticoida
3 1
200 67
171 7 572
3555 221 7
Heleidae larvae 29 867 16600 10989 Chironomid larvae 2 133 1145 3021 Collembola 2 67 1145 4434
Mean number of organismssample 209 Standard deviation 103
2Mean number 0 f organIsms m 179734 Standard deviation 88247
H = 1 86 SD= 056 SR= 1 33 J= 052
A-3
STATION 57 Date 13 March 1984 Depth 91 m Salinity (bottom) 00 ppt Temperature (bottom) 63 C No of sampl es 15
Frequency Densi ty (no 81 2) Total occurrence
Taxa number (X) X SD
Nemertea 27 667 15455 13459 Nematoda 8 400 4579 6381 Turbellaria 4 200 2290 5097 Oligochaeta 8 400 4579 6381 ~g[gipound~l mnilui Ostracoda
1 1
67 67
572 572
2217 2217
~Qgml[a spp 1 67 572 2217 ~Q[Qeni~m lmQnisect Harpacticoida
2 1
133 67
1145 572
3021 221 7
Insecta 3 67 171 7 b651 Chironomid larvae 1 b7 572 221 7 Collembola 37 400 21179 65700 Hydracarina 1 67 572 221 7
Mean number of organismssample 63 Standard deviation 82
Mean number of organismsm2 54378 Standard deviation 70029
H= 253 SD= 075 SR= 1 83 J= 068
A-4
STATION 18 Date 5 April 1984 Depth 30 II
Salinity (bottoll) 00 ppt Temperature (bottom) 90 C No of samples 15
Frequency Densi ty (no1I 2) Total occurrence
Taxa number (i ) If S D
Nemertea 11 bOO 6296 6042 Nematomorpha 2 133 1145 3021 Nuatoda 119 1000 6811 6 50947 Turbellaria 20 600 11448 13640 ~~~nin~sect liIDni~Q12 Oligochaeta
33 481
1000 1000
18889 275324
10364 142326
~Q~Qi~Yl m2nil~ni2 23 600 13165 1371 7 Ostracoda 33 933 18889 10861 gQ(QQrriYID sect2mQnisectHarpacti coi da
38 7
933 133
21751 4007
13329 13328
Chironomid larvae 16 667 9158 8868 ColI embola 1 67 572 2217
Mean number of organismssample 523 Standard deviation 227
M b f 2ean num er 0 organIsms m 448762 Standard deviation 194508
H= 202 SD= 059 SR= 114 J= 0S6
A-5
STATION 45 Date 18 April 1984 Depth 64 III
Salinity (bottom) 00 ppt Temperature (bottom) 95 C No of samples 15
Total Frequency occurrence
Density (noI 2 )
Taxa number (X) X SD
Nematoda 171 1000 97890 92277 tyg~ sp Turbellaria
1 29
67 600
572 16600
221 7 23506
H~nng~ imDi~g tQQsectQl fg~ig Oligochaeta ~Q[Qi~Y2 m2niD~i Ostracodamiddot
9 41
367 42
100
400 1000 1000 800
1000
5152 23469
210071 24041 57240
781 5 13563
100542 19254 43134
~Q[Qeniym amQnisectHarpacticoida Heleidae larvae
37 2049
1
933 1000
67
21179 117284B
572
189B5 616612
221 7 Chironomid larvae 3 200 171 7 3555 Collembola 1 67 572 221 7 Insect parts 1 67 572 221 7
Mean number of organismssample 1901 Standard deviation 864
b f 2nean num er 0 organIsms m 1632485 Standard deviation 741931
H = 1 52 SD= 046 SR= 1 13 J= 040
A-6
STATION 18 Date 18 April 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom) No of samples 15
Frequency Density (nom2) Total occurrence
Taxa nueber (X) x s D
Nemertea 13 533 7441 9663 Nematomorpha 3 200 171 7 3555 Nematoda 195 1000 111618 63675 Turbell ari a 9 467 5152 6326 ~~ni~~ i~ni~Ql~ 30 867 17172 129B1 Oligochaeta 580 1000 331992 108880 ~QC~i~Ml~ m~nil~n~isectOstracoda
28 18
1000 667
16027 10303
11179 10364
~Q[Q~~iYm sect~Qni2 sect~ci~ gniQQnHarpacticoida
105 1
17
1000 67
400
60102 572
9731
25553 2217
19970 Chironollid larvae 16 667 9158 8B6B
Hean number of organismssample 677 Standard deviation 199
M ean num b I 2er 0 f organIsms AI 580986 Standard deviation 171095
w = 202 SD= 062 SR= 1 10 J= 056
95 C
A-7
STATION 58 Date 18 April 1984 Depth 67 m Salinity (bottom) 00 ppt Temperature (botto) No of samples 15
Frequency Density (nom2) Total occurrence
Taxa number (~) X SD
Nemertea 62 933 35489 26338 Nematoda 224 1000 128218 49903 Turbellaria 9 600 5152 4354 ~nt~sect imni~Q Oligochaeta
1 79
67 1000
572 45220
2217 23506
bnQgYRhY~ Yi~~nE ~Q(~i~Y nil~ni Ostracoda
2 10 19
67 533 600
1145 5724
10876
4434 6214
10989 ~Q[QeniY sectQOiHarpacticoida
30 2
B67 133
17172 1145
12142 3021
Heleidae larvae 6 333 3434 5430 Chironomid larvae 9 400 5152 7B1 5 Chironomid pupae 2 133 1145 3021
Mean number of organismssample 303 Standard deviation 94
I 11 ean num ber 0 f organlsms 2 260442 Standard deviation 81043
H= 233 SO= 070 SR= 1 36 J= 063
97 C
A-B
Frequency Density (nolm 2) Total occurrence -----------------
Taxa number (7) X SD
Nemertea 16 467 9158 10989 Nematoda 266 1000 152258 54541 Turbellaria 23 600 13165 15518 ~l~nH ~Q~iQH 2 133 1145 3021 Oligochaeta 181 1000 103604 56532 bi~hQg~Qn~~ ~it~l~ ~QtQifg mli~lsectisectOstracoda
3 59 15
200 1000 733
1717 33772 8586
3555 23054
7256 ~Q[QQhiY HmQtlsect ~Q[QehiYm sect21tlfQ[lg EQlQQQt~i hQ~i
466 3 1
1000 200 67
266738 171 7 572
75094 3555 221 7
Harpacticoida 30 400 17172 40402 Chironomid larvae 10 533 5724 6214
Mean number of organismssa_pIe 717 Standard deviation 143
I 2Mean number 0 f organlsms m 615330 Standard deviation 122532
H= 226 SO= 072 SR= 119 J= 061
STATION 55 Date 18 April 1984 Depth 30 1ft
Salinity (bottom) 00 ppt Temperature (bottom) 93 C No of SaIIples 15
A-9
STATION 45 Date 4 Hay 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 103 C No of samples 10
Frequency Density (noI2) Total occurrence ---------------- shy
Taxa number (Xl X SD
Neutoda 269 1000 230963 167296 Turbellaria 1 100 859 2715 ~u~yuti Q~iQ ~Ub imni~Q
1 2
100 100
859 171 7
2715 5430
j2~Qn flec Oligochaeta
28 169
BOO 1000
24041 145103
19326 74351
~igeYk~ll iulCIDai ~Q(Qi~Y uini Ostracoda
32 4 5
aoo 400
400
27475 3434 4293
22463 4434 6071
biQQ~~tbt sp ~e(QQbYm mQoi sectampQeD ~nQDisect Chironomid larvae
25 2
578 2
900 200
1000 200
21465 1717
496271 171 7
15279 3620
293820 3620
Mean number of organismssample 111 8 Standard deviation 522
11 b f I 2ean num er 0 organIsms m 95991 5 Standard deviation 447842
H= 193 SD= 065 SR= 118 J= 052
A-10
STATION 18 Date 4 Hay 1984 Depth 34 II
Salinity (bottom) 00 ppt Temperature (bottom) 104 C No of saMples 10
Frequency Density (noI 2 ) occurrence ----------------shy
Taxa (X) X SD
Nemertea 10 600 8SB6 10709 Nuatoda 153 1000 131366 47899 Turbellaria 8 600 6869 6773 ~n1b limnpoundQl Oligochaeta
11 147
700 1000
middot9445 126214
9449 6231 7
~i~g~kXl in1(m~i ~g(2iY OiOi Ostracoda
86 4 1
900 300 100
73840 3434 859
61543 6003 2715
bimoQpoundx1b( sp ~2(QQbiYm mgoiDi ptera adult
3 57
3
300 900 300
2576 48940
2576
4147 21815 4147
Chironomid larvae 4 300 3434 6003 Chironomid pupae 1 100 859 2715
Hean nUMber of orQanismssample 489 Standard deviation 160
b f 2nean nUll er 0 organIsms II 418997 Standard deviation 137721
H= 243 SD= 076 SR= 1 34 J= 066
A-l1
STATION 5B Date 4 Hay 1984 Depth 61 bull Salinity (botto~) 00 ppt Temperature (bottom) 110 C No of suples 10
Frequency Density (nom 2) Total occurrence ---------------- shy
Taxa number (X) X SD
Neertn 41 1000 35203 21206 Nematoda 211 1000 181165 53305 Turbellaria 4 200 3434 7240 Oligochaeta 89 1000 76415 32240 ~i~2~~~11~ iU1(~i~bi1begygny YitQ ~e(biYl ~OiDi OstracDda
4 3
20 1
400 200 BOO 100
3434 2576
17172 859
4434 5795
19829 2715
biue~1bt~ sp ~2(egniY Imeoi sectg11g1O OdD Helei dae larvae
5 32
1 1
400 900 100 100
4293 27475
859 859
6071 18010 2715 2715
Chironomid larvae 7 400 6010 9096
Mean number of organismssample 419 Standard deviation 93
b f 2ean nUll er 0 organIsms m 359753 Standard deviation 79875
H= 221 SD= 068 SR= 138 J= 060
A-12
Frequency Density (nolm 2) occurrence -----------------
Taxa (X) X SD
Nemertea 23 900 1974S 15171 Neutollorpha 1 100 859 271 5 Nellatoda 269 1000 230963 69923 Turbellaria 10 600 8586 991 4 ~~xYnki Q~ampiQ 4 300 3434 6003 ~nb limnipoundQl Oligochaeta
1 79
100 1000
859 67829
2715 40363
~i~Q~kXl io[~i biDe9XQDX ~i[~OBi valvi a
11 3 1
800 300 100
9445 2576 859
6335 4147 271 5
~Q[~poundY mnil~n bimoQampXD[ sp ~Q[QabiY lQO Harpacticoida
18 2
159 1
700 200
1000 100
15455 171 7
135659 859
13904 3620
54272 2715
Chironomid larvae 2 200 171 7 3620 Trichoptera larvae 1 100 859 2715
STATION 55 Date 4 May 1984 Depth 21 m Salinity (bottom) 00 ppt Temperature (bottom) 107 C No of suples 10
Mean number of organismssamples 594 Standard deviation 147
Mean number of organismsm2 501422 Standard deviation 126525
H= 219 aD= 069 SR= 1 63 J= 055
A-13
STATION 45 Date 17 May 1984 Depth 61 m Sal i ni ty (bottom) 01 ppt Temperature (bottom) 121 C No of sampl es 10
Frequency Total occurrence
Taxa nUlllber (7)
NelDertea 1 100 859 2715 Nematoda 163 1000 139952 127996 Polychaeta 1 100 859 2715 ~~~n~h~ imni~Qs Hobsonia florida
2 6
200 600
171 7 5152
3620 4434
Oligochaeta 329 1000 282479 13291 8 ~~lQQYsectk~~12 in~~rmQi 57 900 48940 33142 ~Qr~ipound~2 ffi2niDi 6 500 5152 6003 Ostracoda 5 200 4293 10898 bimDg~yth( SPa 13 600 11162 12176 ~Q(Qebi~m sectQDisect Harpacticaida
2 2
200 100
1717 1717
3620 5430
2poundQttQD poundDQDsectisectDiptera adult
296 1
1000 100
254146 859
172633 271 5
Mean number of organismssample 884 Standard deviation 326
b f I 2nean num er 0 organlss m 759002 Standard deviation 280131
H= 209 SD= 071 SR= 1 33 J= 055
A-14
STATION 18 Date 17 May 1984 Depth 30 m Salinity (bottom) 00 ppt Temperature (bottom) 122 C No of samples 12
Frequency Density (nom2) Total occurrence -----------------
Taxa number (X) X SD
Nematoda 50 833 35775 22815 ~ntb limnipoundQl 3 Oligochaeta 97
250 833
2147 69404
3883 48495
~igQ~~k~ intr~ 27 ~QrQipoundY mnin~i~ 5
667 333
19319 3S7S
19068 5740
Ostracoda 1 83 716 2479 bimnQpound~nr sp 5 ~Q(Q~bY ~mQni S4 ~Q(Q~niY ~QinipoundQ(n 3
333 833 250
3578 60102
2147
5740 43780 3883
fgnQ2Q(i bQ~i 1 sectpoundQtgO poundnQn~i 2 Chironomid larvae 4
83 167 250
716 1431 2862
2479 3342 5592
Mean number of organismssample 235 Standard deviation 116
nean nURl b er 0 f organlslls II 2 201771 Standard devi ati on 99221
H= 236 SD= 075 SR= 1 35 J= 066
A-15
STATION 58 Date 17 May 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) 123 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nemertea 2 100 171 7 5430 Nematoda 75 1000 64395 34404 ~~2Qih~a limQi~Q 2 200 171 7 3620 Oligochaeta 60 1000 51516 33376 ~~igQY~~~12 iQ~[~~gi 2 200 171 7 3620 bitQQ9~Bh~sect Yr~Qsect 3 200 2576 579~
gQ[Qi~Yl ID2Dil~nsectisect Ostracoda
6 6
500 400
5152 5152
6003 8295
binQ~~nr[ sp gg[QQOYm mQQsect sect~QttQn 5n2Q~nsectia Chironomid larvae
2 34
1 1
200 1000
100 100
171 7 29192
859 859
3620 12927 271 5 2715
Mean number of organismssample 194 Standard deviation
2Mean nurn ber 0 f organIsms fA 166568 Standard deviation 56259
H= 225 SD= 072 SR= 1 45 J= 063
A-16
66
STATION 55 Date 17 May 1984 Depth 24 II
Salinity (bottom) 00 ppt Telllperature (bottom) 126 C No of samples 10
Total Frequency occurrence
Taxa nUllber (X) X SD --------------------------------------------------------------~-----------
Nematollorpha 2 200 171 7 3620 Nematoda 63 1000 54092 35297 Oligochaeta 94 1000 80708 44004 ~~iQQY~k~~l iQt~(m~Qi bitnQg~Qh~~ Yi[~Q gQ[QipoundY~ mni~Q~i Ostracoda
10 9 4 2
600 800 300 100
8586 7727 3434 171 7
9050 4874 6003 5430
bimnQ~~ln~[e sp ~Q(QQbiYm mQD ~Q[QQbiYm 2inipoundQ[n~ Chironomid larvae
6 142
3 1
600 1000 200 100
5152 121921
2576 859
4434 50682 5795 2715
Mean number of organismssample 336 Standard deviation 62
2Mean num ber 0 f organisms m 288490 Standard deviation 53421
H= 214 SD= 071 SR= 119 J= 062
A-17
STATION 45 Date 1 June 1984 Depth 61 m Salinity (bottom) 01 ppt Temperature (bottom) 139 C No of samples 10
Total Frequency occurrence
Density (no2)
Taxa nUllber (1) X SD
Nematoda 174 900 149396 132347 Turbellaria 5 200 4293 10898 ~~~QiQ~sect tmQtpoundQ~ ~QQsectQ flQi~sect Oligochaeta ~~iQQysecttygl~ iQl~rm~~i2 ~Q[Qi~~l~ ~~DilgDsectisect Ostracoda
5 20
190 103
12 5
400 900
1000 900
60 (I 400
4293 17172
163134 88436 10303 4293
6071 8095
92563 51524 11304 6071
bimnQpoundytng[ sp ~gQmYsectisect IDg[pound~Qisect ~Q[QQhi~m sectlmQDisect sectpoundQtiQlsectQ pound~Qgsectisect ChironQmid larvae
33 1
10 375
2
900 100 700
1000 200
28334 859
8586 321975
171 7
17196 2715 7010
179201 3620
Mean number of organismssample 935 Standard deviation 254
nurn b 0 f 2lean er organlsms m 802791 Standard deviation 218423
H= 239 SD= 075 SR= 1 22 J= 065
A-18
STATION 18 Date 1 June 1984 Depth 30 AI
Salinity (bottom) 00 ppt Temperature (bottom) 134 C No of samples 11
Frequency Density (no 1m2)
Taxa Total number
occurrence (X)
---------------- shyX SD
Turbellaria 14 636 10928 1157 7 ~~~Qltlg~ ilipoundQ~ Oligochaeta
10 178
727 1000
7805 138937
601 6 67913
~~iQQy~tY~l~ ill~[m~Qi~ 122 636 95227 93619 ~Q[Qipound~ l~i~lsectisect Ostracoda
7 1
455 9 1
5464 78 1
6946 2589
billQylhg[ Spa 16 818 12489 10420 GQ[QQQil HQi~ 139 1000 108496 70934 gQ[Qebi secteiifQ[~ sectQiiQi2 ~Q~sectisect Diptera pupae
1 2 1
9 1 182
11 1
781 1561 781
2589 3473 2589
Chironomid larvae 2 182 1561 3473
Mean number of organismssample 714 Standard deviation 284
nean num b er 0 f organlsms m 2 612728 Standard deviation 244249
H= 232 SD= 075 SR= 1 25 J= 063
A-19
STATION 58 Date 1 June 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 138 C No of samples 10
Frequency Density (noI 2 ) Total occurrence
Taxa number (X) X SD
Nematoda 173 1000 148538 47383 Turbellaria 3 300 2576 4147 Oligochaeta 53 1000 45506 32139 ~giQgY2k~g~ ini~[m~Qi~ bQg91YehY2 Yi[~nsect ~Qr~i~Yl m~nl~n~i
26 1
10
600 100 500
22324 859
8586
3391 2 2715
13424 bimnQpound~Q~[ sp ~Q9~m[Y poundgnitYpoundQlysect ~QtQehiYm ~lQni
4 1
46
200 100
1000
3434 859
39496
8295 2715
22243 Chironomid larvae 1 100 859 271 5
Mean number of organismssample 318 standard deviation 103
M b f I 2ean num er 0 organlsms III 273035 Standard deviation 88842
H = 1 99 SD= 065 SR= 1 08 J= 060
A-20
STATION 55 Date 1 June 1984 Depth 27 m Salinity (bottom) 00 ppt Temp era t u r e (b 0 t tom) 140 C No of samples 10
Frequency Density (nom 2 ) Total occurrence
Taxa nueber (X) X SD
Nematoda 157 1000 134800 69524 Turbellaria 9 400 7727 13696 tlHl~lk ~2~~iQH 1 100 859 2715 Oligochaeta 49 1000 42071 32745 ~~iQQysect~gl~ S[l9sect bHbQghQb~~ Yirl~
10 1
400 100
8586 859
12799 2715
tQ[Qpoundls l2lilUsect bilQHSbg[ sp ~QrQQbil nllQisectHarpacticoida
4 7
134 1
400 500
1000 100
3434 6010
115052 859
4434 7069
44742 271 5
sectpoundQUQlls poundsQgn~sect Chironomid larvae
1 1
100 100
859 859
271 5 2715
Hydracarina 1 100 859 2715
Hean number of organismssample 376 Standard deviation 132
M b f 2ean num er 0 organIsms m 322834 Standard deviation 113127
H= 202 SD= 068 SR= 1 40 J= 055
A-21
STATION 45 Date 18 June 1984 Depth 67 m Salinity (bottom) 01 ppt Temperature (bottom) 149 C No of samples 10
Frequency Density (nom2)
Taxa Total nUllber
occurrence ex) i SD
Nematoda 109 1000 93587 3891 7 Turbell ari a 3 200 2576 5795 ~g~tbg limoipoundQl Q~Qni2 fQ(i~2 Oligochaeta ~gigQ~~Y inl[ggi ~Q[QiSY2 moilo Ostracoda
3 2
194 44
7 3
200 200
1000 1000 200 200
2576 171 7
16656B 37778 6010 2576
5795 3620
118364 36020 12831 5795
bimoQampl~n~[2 sp ~Q[QQbiYm lmgoi Harpacticoida sectpoundQQ1202 pound2022Osect Chironomid larvae
68 1 1
113 2
900 100 100
1000 200
58385 859 859
97022 171 7
97627 2715 2715
73976 3620
Mean number of organismssa_pie 550 Standard deviation 371
Mean nUll ber 0 f organIsms 2II 472230 Standard deviation 318519
H= 242 SD= 077 SR= 1 32 Ja 065
A-22
STATION 18 Date 18 June 1984 Depth 34 m Salinity (bottom) 00 ppt Temperature (bottom) 155 C No of samples 10
Frequency Density (nom 2) Total occurrence ----------------shy
Taxa nUlber (Z) X SD
Neutoda 291 1000 249853 138826 Turbellaria 1 100 859 2715 ~~n~~nki~ sectQ~~iQ~2 ~g~ntbg2 limni~Q9 Oligochaeta
1 3
123
100 300
1000
859 2576
105608
271 5 4147
48240 ~~igQY~~~~9 int~(mgii ~Q[~i~~~ mini~ni bimnQ~ylbg(~ Spa
67 6 5
1000 500 400
57526 5152 4293
40485 6003 6071
~Q(QebiYm ~imQnisect Harpacticoida
80 2
1000 200
68688 171 7
41276 3620
sect~QttQini ~2nig~n~i Chironomid larvae
2 4
200 300
171 7 3434
3620 6003
Mean number of organismssample 585 Standard deviation 194
I 2Mean urn b er 0 f organIsms m 502281 Standard deviation 166943
H= 203 SD= 068 SR= 1 20 J= 057
A-23
STATI ON 58 Date 18 June 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (noI 2) Total occurrence
TaKa number (X) X SD
Nellertea 2 100 1717 5430 Nematoda 160 1000 137376 6361 1 Turbellaria 4 400 3434 4434 Oligochaeta 36 1000 3091 0 14705 ~iQQYik~ Q1rQ 4 300 3434 6003 bitnQgl~ebysect YrDsect ~Q[QiY~ ~~nni biQQpoundY1h[ sp ~Q[Qeng ~ilQD Chironomid larvae
3 1 3
61 1
300 100 300
1000 100
2576 859
2576 52375
859
4147 2715 4147
1428 1 2715
Chironollid pupae 1 100 859 271 5
Mean number of organismssample 276 standard deviation 72
nean nurn b er 0 f organIsms I 2 236974 Standard deviation 61410
H = 1 78 SD= 060 SR= 1 23 J= 051
A-24
STATION 55 Date 18 June 1984 Depth 18 m Salinity (bottom)1 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (no 1m2) occurrence
Taxa (X) X SD
Nematoda 160 1000 137376 43967 Turbellaria 1 100 859 271 5 Oligochaeta 61 1000 52375 31985 ~~iQQY~kY~~ int~[mQi~ ~Q[Qipound~l~ m~nini~ biIDnQ~Ylb[s sp
3 3 3
300 300 300
2576 2576 2576
4147 4147 4147
~Q[Q~bi~ ~slIDQni~ Chironomid larvae
85 6
1000 600
72981 5152
34165 4434
Mean number of organismssample 322 Standard deviation 75
2Mean number 0 f organIsms m 276469 Standard deviation 64099
H= 178 5D= 065 SR= 0B4 J= 059
A-25
Frequency Density (no2) occurrence -----------------
Taxa (7) X SD
Nematoda 104 1000 89294 47409 Turbell ar i a 1 100 859 2715 ~~~nQ~sect imni~Q~ tjQQsectQlis flQig~ Oligochaeta
2 1
297
100 100
1000
171 7 859
255004
5430 271 5
146273 ~~i~QYsect~Y~lls ilr2is gQrQi~y~ IDDilDia
24 4
600 300
20606 3434
27212 6003
Ostracoda 2 200 171 7 3620 biDQSy~b~C~ sp M~QYsectisect m~r~~Qi ~QrQeniy QD Harpacticoida
157 1 1 1
900 100 100 100
134800 859 859 859
73197 2715 2715 2715
sectpoundQttQDs SsDQD 113 900 97022 61656
STATION 45 Date 2 July 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) No of samples 10
172 C
Mean number of organismssample 708 Standard deviation 339
M ean num b er f 20 organisms 607889 Standard deviation 290B22
H= 216 SD= 073 SR= 1 27 J= 058
1-26
STATION 18 Date 2 July 1984 Depth 24 WI
Sal inity (bottom) 00 ppt Temperature (bottom) 172 C No of samples 10
--------------------------------~-----------------------------------------Frequency Density (nom2)
Total occurrence Taxa number (7) X SD
Nematoda 202 1000 173437 113532 ~~~nih~sect mnpoundQ~ Oligochleta
4 102
400 1000
3434 87577
4434 54873
~~igQYsect~Y~12 inl~rmgi2 ~Q[~poundYl~ m~ni~nsectisect bimnQpoundylh~[~ Spa
115 4
15
900 300 900
98739 3434
12879
100720 6003 9274
~Q[QQniY~ sect~QDi~ 55 900 47223 40525 Harpacticoida 1 100 859 2715 sectpoundQiiQlD SDg~DEisect Chironomid larvae
2 6
200 400
1717 5152
3620 7240
Hymenoptera 1 100 859 2715 Hydracarina 1 100 859 2715
Mean number of organismssample 508 Standard deviation 253
2Mean num ber 0 f organIsms m 436169 Standard deviation 217580
H= 225 SD= 074 SR= 1 22 J= 063
A-27
STATION 58 Date 2 July 1984 Depth 58 1
Salinity (bottom) 00 ppt Temperature (bottom) IBO C No of samples 10
Frequency Density (no2) Total occurrence
Taxa number ltX) i SD
Nematoda 151 1000 129649 42729 Turbellaria 1 100 859 2715 01 i gochaeta 41 1000 35203 22698 ~~i~e~~~ int~~m~~ 3 200 2576 5795 btbQglYRhY~ Yir~n~ ~e~~ampy mni~niii bimQeamp~tb~ sp ~e~eQhiY ~mQni Chironomid larvae
1 4 2
68 1
100 300 200
1000 100
859 3434 171 7
58385 859
271 5 6003 3620
1557 1 2715
Mean number of organisassample 272 Standard deviation
I 2Mean num ber 0 f organIsms I 233539 Standard deviation 62546
H = 1 69 SD= 061 SR= 099 J= 053
A-28
73
STATION 55 Date 2 July 1984 Depth 15 III
Salinity (bottom) 00 ppt Temperature (bottom) 182 C No of samples 10
Frequency Density (nom2) occurrence
Taxa (X) X SD
Nematoda 184 1()00 157982 5264B Turbellaria 1 100 859 271 5 Oligochaeta ~~iQQ~sect~Y~ll~ n~[~~Qi~ bitnggYQDYsect Yi[~nsect ~QrQipoundM2 m2ni~nsectisect bimnQpoundYn~[2 sp ~QrQQhiM Qni Harpacticoida
91 2 1 B 2
96 2
1000 200 100 500 200
1000 200
78133 171 7 859
6869 171 7
82426 1111
26058 3620 271 5 1890 3620shy
25980 3620
ChirDnomid larvae 5 400 4293 6071 Chironolllid pupae 1 100 859 2715
Mean number of organismssample 393 Standard deviation 53
2t1ean nUllber Df organlsms III 337430 Standard deviatiDn 45080
H= 187 SD= 067 SR= 116 J= 054
A-29
STATION 45 Date 17 Jul y 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (X) X SD
Nematoda 215 1000 184599 45837 ~~n~b~~ imDipoundQ Qe~Qni fllHi2
3 1
300 100
2576 859
4147 2715
Oligochaeta 305 1000 261873 147955 ~~iQQY~k~ in~rm~2i ~Qr~ipoundYl IDniln~i~ Ostracoda
17 1 2
500 100 200
14590 859
171 7
22554 2715 3620
bmnQpound~ihr sp ~QCQQhiY ~lQD~
176 1
1000 100
151114 859
57125 2715
Harpacticoida 4 300 3434 6003 sectQ~~Qn poundnQnai~ Chironomid larvae
91 5
1000 400
78133 4293
61310 6071
Mean number of organismssample 821 Standard deviation 275
M b f 2ean num er 0 organlsms m 70491 1 Standard deviation 236369
H= 215 SD= 073 SR= 114 J= 060
A-30
STATION 18 Date 17 Jul y 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom 203 C No of samples 10
Frequency Density (001 2 Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 339 1000 291065 119140 Turbellaria 3 200 2576 5795 ~~2~b~~ limnipoundQ12Oligochaeta
4 18S
300 1000
3434 161417
6003 89393
~~iQQy~~~ls in~(ID~Qi bim~Qampy~bg(2 Spa
34 16
800 700
29192 1373B
22967 15252
~g(gebi~m ~21mQni2 Harpacticoida
52 3
1000 200
44647 2576
25212 5795
2ampQ11Q1202 ampS02Qg~2i2 Chironomid larvae
18 10
700 700
15455 8586
13904 701 0
Mean number of organi$mssample 667 Standard deviation IBB
H ean nurn b er 1 20 f organIsms m 572686 Standard deviation 161750
H = 1 99 SD= 065 SR= 090 J= 060
A-31
STATION 58 Date 17 July 1984 Depth 55 AI
Salinity (bottom) 00 ppt Temperature (bottom) 197 C No of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nellatoda 173 1000 14853B 66390 Turbellaria 1 100 859 271 5 ~~~n~hu ini~QA Oligochaeta
1 46
100 1000
859 39496
2715 26293
~gipoundQy~~ygl2 in~rJg~i~ b1nQglYRnY~ Yi( Bivalvia
6 2 1
400 200 100
5152 1717 859
8295 3620 271 5
ei~ IDnH~n~i~ 2 200 171 7 3620 Ostracoda 1 100 959 271 5 biIDQHlh~( Spa ~Q(QRbim ~21Qnisect Diptera pupae
1 94
1
100 1000 100
859 80708
859
2715 35332 2715
Heleidae 1arvae 5 500 4293 4525 Chironomid larvae 1 100 859 2715
Mean number of organismssample 335 Standard deviatiDn 113
Mean number of organismsRI2 287631 Standard deviation 97413
H= 1 86 SO= 064 SR= 155 J= 049
A-32
STATION 55 Date 17 July 1984 Depth 18 m Sali nity (bottom) 00 ppt TeAlperature (bottom) 199 C No of samples 10
Frequency Density (nom2 ) occurrence
Taxa (X) x S D
Nematoda 61 1000 52375 33972 Turbellaria 1 100 859 2715 Oligochaeta 24 900 20606 11590 ~~i2QY~k~~1 iOi[2 bimDQ~xlb~r sp ~Q[QQhi~ sectgni~ Chironomid larvae
3 1
38 3
200 100
1000 300
2576 859
32627 2576
5795 2715
19326 4147
Mean number of organismssample 131 standard deviation 54
M b f 2ean num er 0 organIsms 112477 Standard deviation 46757
H= 184 SD= 066 SR= 085 J= 065
bull
A-33
STATION 45 Date 1 August 1984 Depth 58 m Sal i nity (bottoll) 03 ppt Temperature (bottom) 203 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa nUllber (X) X SD
Nematoda 145 1000 124417 52344 Turbellaria 1 100 859 2715 Mmth~sect iHpoundQ~ Q~~Qi ilQ[i9Oligochaeta
5 3
196
500 300
1000
4293 2576
168286
4525 4147
91064 ~igQYsect~~li int9i Ostracoda
2 3
100 300
171 7 2576
5430 4147
bimnQpoundtl sp ~Q[Q2hiY sectlQni~
240 6
1000 600
206064 5152
73526 4434
sectpoundQtQl poundngnai~Helei dae larvae
1862 1
1000 100
1598713 859
966134 271 ~
Mean number of organismssample 2464 Standard deviation 1156
211 ean num ber 0 f organIsms II 2115590 Standard deviation 992518
H= 124 SD= 041 SR= 089 J= 036
A-34
STATION 1S Date 1 August 1984 Depth 24 II
Salinity (bottom) 00 ppt Temperature (bottom) 198 C No of samp I es 10
Frequency Density (nom2) occurrence ---------------- shy
Taxa (X) X S D
Nuertea 1 100 859 2715 Nellatolllorpha 1 100 859 2715 Nematoda 248 1000 212933 108288 Turbellaria 4 400 3434 4434 ~untb~la Hli~g Oligochaeta
4 206
400 1000
3434 176872
4434 75309
~~igQYli~dli i[t~(gi~ ~QtQpound l binQ~ybt2 sp ~2l~bi Q[i ~2tlgtQ(ila tirisect sectpoundQtel poundl9lla Chironomid larvae
10 1
20 205
1 574
9
500 100 800
1000 100
1000 400
8586 859
17172 176013
859 492836
7727
10709 271 5
14021 48104
271 5 150531
13696
Mean number of organismssample 1284 Standard deviation 290
M b f I 2ean nurn er 0 organIsms III 1102442 Standard deviation 2488B5
H= 211 SD= 071 SR= 1 16 J= 057
A-35
STATION 58 Date 1 August 1984 Depth 55 m Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samp 1es 10
Frequency Densi ty _ ltnom2 ) Total occurrence
Taxa number (7) X SD
Nemertea 1 100 859 2715 Nematoda 22 900 18889 15036 Turbellaria 1 100 859 2715 Oligochaeta 19 700 16313 17385 biiQQgl~QhY~ YiCg~~ 2 200 171 7 3620 ~Q[~i~~l~ m2nil~n2i2 ~Q[QehiYm ~lmQni2
4 164
300 1000
3434 140810
6003 103048
Heleidae larvae 8 500 6869 8868
Mean number of organismssample 221 Standard deviation 111
I 2Mean num ber 0 f organIsms m 189751 Standard deviation 95391
H = L 37 SD= 043 SR= 090 J= 046
A-36
STATION 55 Date 1 August 1984 Depth 15 m Salinity (bottoll) 01 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (i ) X SD
Nemertea 1 100 859 2715 Neutoda 122 1000 104749 7394B Turbellaria 4 300 3434 6003 ~~~~~nt~ secte~poundQa~ Oligochaeta
1 118
100 1000
859 101315
2715 61223
~giQgY~k~~l iot~[m~Qi btbQg~2b~ Y[O ~grQipound~ ~nl~ni b~ngpound~tb~[ Spa
3 1 5 1
200 100 500 100
2576 859
4293 859
5795 2715 4525 2715
~Q[QebiYm ~mQoi sect~QttQ~ ~OQOi Heleidae larvae
42 2 2
800 200 100
36061 171 7 171 7
21341 3620 5430
Chironomid larvae 4 400 3434 4434
Mean number of organismssapIe 306 Standard deviation 169
M b f I 2ean nurn er 0 organIsms m 262732 Standard deviation 145101
H = 198 SD= 067 SR= 1 45 J= 054
A-37
~-- --------------~~-------------
STATION 45 Date 17 August 1984 Depth 61 1
Salinity (bottom) 10 ppt Temperature (bottom) 210 C No of samp 1es 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nematoda 240 1000 206064 130213 ~~h~sect limQ tjQ~~Hi~ fQ[i~~ Oligochaeta
31 2
245
400 100
1000
26617 1717
210357
75228 5430
121374 babgglYQbl~ Yi[~sect 1 100 859 2715 Ostracoda 1 100 859 271 5 biQ~xtb~[ Spa ~~Q~~isect ~[pound~Qisect ~Qgebi HQOi
333 2
143
1000 200
1000
28591 4 171 7
1227BO
106553 3620
106860 sectpoundQUg~ poundg~nsectisect 1738 1000 1492247 68441 7
Mean number of organismssample 2736 Standard deviation 944
M b f I 2ean num er 0 organlslls m 2349130 Standard deviation 810600
H= 172 SD= 056 SR= 079 J= 052
A-38
STATION 18 Date 17 August 1984 Depth 27 III
Sal i ni ty (botto) 01 ppt Temperature (bottom) 214 C No of samples 10
Frequency Density (nom 2 ) occurrence
Taxa (X) X SD
Nematoda 186 1000 159700 62468 ~tgt SPa 2 100 171 7 5430 Turbellaria 8 400 6869 8868 ~~ntbg2 imnipoundQ 12 700 10303 11304 Oligochaeta 283 1000 242984 90509 ~~iQQY~~Y~lls inlgtmggisBivalvia
4 1
400 100
3434 859
4434 271 5
~Qt~i~Y nilnsectisectbimnQpoundttbg[s SPa ~QtQQbi~ islmQDi2
1 17
286
100 900
1000
859 14596
245560
271 5 10747 83461
sectpoundetteln poundDsggnsectisect Chironomid larvae
526 4
1000 3Q0
451624 3434
179610 6003
Mean number of organismssapIe 1330 Standard deviation 162
Mean nurn ber I 20 f organIsms m 1141938 Standard deviation 139389
H= 214 SD= 073 SR= 1 06 J= 060
A-39
STATION 58 Date 17 August 1984 Depth 55 II
Salinity (bottom) 01 ppt Temperature (bottom) 220 C ND of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (7) x S D
Nematoda 68 1000 58385 27689 Turbellar i a 4 200 3434 8295 Oligochaeta 19 800 16313 13084 ~~i~Q~k~~l~ in~~[m~i bitUQ9Y2bYa Yi[~na Bivalvia
3 3 4
300 300 300
2576 2576 3434
4147 4147 6003
gQ[QipoundYl~ mnilDa 1 100 859 2715 binQpoundY~[ sp gQ[Q2UY a~mgnia sect~Qtgl~n ~n~~ni
2 338
6
100 1000 400
171 7 290207
5152
5430 56636 7240
Mean number of organismssample 448 Standard deviation 72
W b f 2lean num er 0 organlsms II 384653 Standard deviation 61988
H = 1 27 SD= 041 SR= 1 02 J= 038
A-40
STATION 55 Date 17 August 1984 Depth 18 m Salinity (bottom) 00 ppt Temperature (bottol) 223 C No of samples 10
Frequency Density (nom 2 ) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 291 1000 249853 118104 Turbellaria 1 100 859 2715 M~ntb~ mni~Q Oligochaeta
1 47
100 1000
859 40354
2715 28347
~~iQQ~sectkY~ll int~[m~gi bitbQQ1YSDY Yi(gn Bivalvia
25 12
6
900 500 400
21465 10303 5152
1231 0 18459 7240
~Q~2ipoundY mnil~ni Ostracoda
11 8
400 600
9445 6869
12442 6773
bmnQpoundYb~r~ SPa 52 1000 44647 19746 ~QrQsbY lmgnisectsQiielo snQ~ni~ Chironomid larvae
43 5
15
1000 400 BOO
36920 4293
12879
21436 6071 8344
Mean number of organismssample 517 Standard deviation 174
M b f I 2ean num er 0 organlsms m 443896 Standard deviation 149431
W = 228 SD= 065 SR= 1 33 J= 062
A-41
STATION 45 Date 29 August 1984 Depth 55 III
Salinity (bottom) 07 ppt Temperature (bottom) 199 C No of samples 10
Frequency Density (noI 2) Total occurrence
Taxa number (X) X SD
Nematoda 192 1000 164851 98380 ~sntbsect limnipoundQlDligochaeta
2 198
200 1000
171 7 170003
3620 67339
~Q[eipoundYls msniln~isect Ostracoda
1 4
100 400
859 3434
2715 4434
bimnQpoundytb[s Spa gQ[Qeniy sect21QOi~ sectpoundQttQlsO poundsOsggOi
164 87
2468
1000 1000 1000
140810 74698
2119025
39283 39460
840890
Mean number of organismssample 311 6 Standard deviation 101 1
ill b f 2nean nUll er 0 organIsms 2675398 Standard deviation 8682B8
W= 116 SD= 036 SR= 060 J= 039
A-42
STATION 18 Date 29 August 1984 Depth 30 bull Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samples 10
Total Frequency occurrence
Densi ty 2
(nom )
Taxa number (~ ) x S D
Nematoda 150 1000 128790 28905 Turbellaria 7 400 6010 9096 ~nh imni~Qj Oligochaeta ~~i~2Y~k~~1 ini~CIDgii bih2g~Qb~ Yi(~U2 Bivalvi a
B 145
1 1 2
600 1000
100 100 200
6869 124497
859 859
171 7
677 3 84732
271S 2715 3620
~Q[Qi~yli miDllgni bimn2pound~ih~C sp ~QtQehiY imQUia Harpacticoida
7 7
265 1
500 300
1000 100
6010 601 0
227529 859
8145 10747
139462 2715
sect~QtiQDi ~Q~Q~i~ Chironomid larvae
2471 2
1000 200
2121601 171 7
1063112 3620
Mean number of organismssample 3067 Standard deviation 121 9
2Mean number 0 f organIsms m 2633326 standard deviation 1046718
H = 1 09 SD= 034 SR= 1 04 J= 029
A-43
STATION 58 Date 29 August 1984 Depth 55 111
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (noI 2 ) Total occurrence -----------------
Taxa nUllber (X) X SD
Nemertea 4 400 3434 4434 Nuatoda 64 1000 54950 25016 Turbellaria 9 400 7727 11047 ~Hl~b limli~Q19 Oligochaeta
1 37
100 1000
859 31769
2715 19006
i~Qyh il(~~ bHtlQSlheln Yl Bivalvia
4 4
20
200 300 400
3434 3434
17172
8215 6003
26541 ~e(ijY l bQ~dlH sp
26 1
700 100
22324 859
25662 2715
~Q[QQhil iQ sectjgUell HD Heleidae larvae
418 20
1
1000 800 100
358895 17172
859
129443 12799 271 5
Mean number of organismssample 609 Standard deviation 175
nean num b er 0 f organIsms 1 111 2 522887 Standard deviation 150164
H= 176 SD= 051 SR= 1 30 J= 047
A-44
I I
I
I
STATION SS
Date 29 August 1984 Depth 21 1
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (no2) Total occurrence
Taxa nUllber (X) x S D
Nematoda ISO 1000 128790 37969 Turbellaria 1 100 859 271 5 Oligochaeta 48 1000 41213 16088 ~i~g~sect~~l iQ~~mgi bi~QQg~gb~sect ~i~nsect
10 14
600 600
eSB6 12020
9050 14137
Bivalvia 4 200 3434 7240 ~Q[Q~Yl niQaa Ostracoda
15 7
700 SOO
12879 6010
15806 7069
bmQg~~~b~ SPa 14 800 12020 8295 ~g[gaby mgni sect~g~~Qn ~ngnai Chironomid larvae
IB4 25 9
1000 900 700
157982 21465
7727
35563 16810 6335shy
Mean number of organismssample 481 Standard deviation B6
2Mean number 0 f organlsms m 412987 Standard deviation 74131
H= 24S SD= 074 SR= 1 23 J= 068
A-45
STATION 45 Date 14 September 1984 Depth 61 11
Salinity (bottom) 03 ppt Temperature (bottom) IB4 C No of samples 10
---------------------------------~----------------------------------------
Taxa TotalnUlllDer
Frequency occ~~~ence
Density (no 2) -----X-------sect7B
Nematoda 189 1000 162275 85233 t1tQ SPa
Turbellaria 2 2
200 100
171 7 171 7
3620 5430
~~~nIng limoifQl t1QQQDi~ flQriQ Oligochaeta
5 19
142
400 800
1000
4293 1631 3
121921
6071 12442 30504
~QQifYl mDl~D bimoQpoundt1hgr Spa Cumacea
19 184
2
800 1000 200
1631 3 157982
171 7
130B4 69541 3620
~Q[QnniYm ~~lmQDi Harpacticoida
118 1
1000 100
10131 5 B59
43367 2715
sectfQIIQD fOQgO Chironomid larvae
1780 1
1000 100
1528308 859
673586 2715
Mean number of organismssample 2464 Standard deviation 874
M ean num b er f 20 organlsms 2115590 Standard deviation 750305
H= 151 SD= 046 SR= 1 07 J= 041
A-46
STATION 18 Date 14 September 1984 Depth 21 III
Salinity (bottom) 01 ppt Temperature (botto) 182 C No of samples 10
Frequency DenSity (nom 2 ) Total occurrence ---------------- shy
Taxa nUlDber (i) X SD
Nemertea 1 100 859 271 5 Nematoda 186 1000 159700 44925 Turbellaria 16 400 13738 20717 ~~Dth~~ limni~Ql Oligochaeta
13 55
700 900
11162 47223
9096 30085
~Q~ei~Yl nil~Qi~ 17 900 14596 7069 bimDg~lbg[ Spa b 500 5152 6003 ~Q[Q2niY ~lgQi~ Harpacti coi da
562 2
1000 200
482533 171 7
136766 3620
sectpoundQttQ~Q~ ~n~ni 791 1000 679153 324290
Mean number of organismssample 1649 Standard deviation 447
I 211ean nUll ber 0 f organIsms I 1415831 Standard deviation 384136
H= 179 SD= 064 SR= 084 J= 054
A-47
STATION 58 Date 14 September 1984 Depth 58 III
Salinity (bottom) 01 ppt Temperature (bottom) 191 C No of sampl es 10
-------------------------------------------~------------------------------Frequency Density (nom 2 )
Total occurrence Taxa number eX) X SD
Nemertea 1 100 859 2715 Nematoda 55 1000 47223 18658 Turbellaria 10 500 8586 11448
1 100 859 2715 Oligochaeta 41 1000 35203 17850 ~~iQQ~~gll iu1g[m~i ~Q[Q~Yl nilD bimnQ~Y~h[ Spa ~Q[Q~hiYm lmgui sectpoundQilg1D poundU2D Chironomid larvae
4 10
2 277
23 4
100 500 200
1000 700 300
3434 8586 171 7
237832 19748 3434
10861 11448 3620
50561 21051 6003
Mean number of organismssample 428 Standard deviation 51
M b f 2ean num er 0 organIsms III 367481 Standard deviation 43743
H= 179 SD= 055 SR= 114 J= 052
A-48
I I
STATION SS Date 14 September 1984 Depth 21 II
Salinity (bottom) 01 ppt Temperature (bottom) 190 C No of samples 10
--------------------------------------------------------------------~-----
Frequency Density (no1I2) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 102 1000 87577 39200 Oligochaeta 34 700 29192 31142 ~iQ2Y~y1 int(mgi~ bithQgl~en~ Yi(gDsect ~Q(~i~Y m~DilgDsecti~ bimDQamp~1h(sect sp ~2(QQhiY slmQD 2poundQiiQlsD ~sD~g~nsecti Chironomid larvae
36 18 16 17
100 16
3
1000 600 800 700
1000 800 300
30910 15455 13738 14596 85860 13738 2576
157BO 20953 10078 14621 32126 10861 4147
Mean number of organismssample 342 Standard deviation 97
2Mean nUllber 0 f organlsms m 293641 Standard deviation 83617
H= 262 SD= 079 SR= 095 J= 083
A-49
Appendix B--Sediment particle size and organic content of the Cathlamet Bay
benthic invertebrate sites 13 March through 14 September
1984
iii
1
Station 18a 48 54 57
Survey 1 1 1 1
Month March March March March
Day 13 13 13 13
Particle size (mm) Phib Percent by weight
gt 40 -2 000 000 000
20- 40 -1 000 000 000
10- 20 0 000 009 000
05- 10 1 018 1079 032
025- 050 2 545 7583 2468
0125- 025 3 8731 1225 6783
00625-0125 4 491 037 657
lt0625 (5-12) 216 067 060
Organic Content 160 116 128
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
b Phi= -log2(sediment particle diameter in mm)
B-1
Station 18a 48 54 57
Survey 2 2 2 2
Month April April April April
Day 5 5 5 5
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 003 093 000
05shy 10 1 005 31 75 023
025shy 050 2 087 5904 2368
0125- 025 3 6316 750 7155
00625-0125 4 3056 026 427
lt0625 (5-12) 533 052 028
Organic Content 081 077 065
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-2
Station 45 55 58
Survey 3 3 3 3
Month April April April April
Day 18 18 18 18
Particle size (mm)
gt 40
Phi
-2
Percent by weight
000 000 000
20shy 40 -1 000 000 000
10shy 20 0 005 009 004
05shy 10 1 010 027 013
025shy 050 2 015 095 225
0125- 025 3 097 536 6111
00625-0125 4 453 2821 2205
lt0625 (5-12) 9420 6511 1442
Organic Content 31 42 14
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-3
Station 18a 45 55 58
Survey 4 4 4 4
Month May May May May
Day 4 4 4 4
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 021
05shy 10 1 000 065 063
025shy 050 2 012 370 230
0125- 025 3 091 4099 4696
00625-0125 4 322 3650 3052
lt0625 (5-12) 9575 1810 1939
Organic Content 330 180 160
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-4
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
5
May
17
000
000
005
016
217
5862
2729
1170
100
45 55 58
5 5 5
May May May
17 17 17
Percent by weight
000 000
000 000
005 008
113 031
325 274
1903 5613
2784 2401
4870 1672
240 110
000
000
000
010
020
079
397
9494
390
B-5
Station 18al 45 55 58
Survey 6 6 6 6
Month June June June June
Day 6 6 6 6
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 020
05shy 10 1 005 051 027
025shy 050 2 005 301 1 79
0125- 025 3 074 3189 5404
00625-0125 4 599 4118 2885
lt0625 (5-12) 9317 2332 1485
Organic Content 340 240 150
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-6
Station
Survey
Month
Day
Particle size Cmm) Phi
gt 40 -2
20shy 40 -1
10shy 20 a
05shy 10 1
025shy 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
7
June
18
000
000
005
029
138
3917
4143
1768
180
45
7
June
18
55 58
7 7
June June
18 18
Percent by weight
000
000
000
010
020
080
427
9464
310
000 000
000 000
000 007
011 022
057 190
957 5286
3023 2642
5957 1853
1 70 110
B-7
Station 18al 45 55 58
Survey 8 8 8 8
Month July July July July
Day 2 2 2 2
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 006 002 006
05shy 10 1 006 0l3 023
025shy 050 2 017 088 171
0125- 025 3 074 2712 5365
00625-0125 4 552 3892 3081
lt0625 (5-12) 9345 3294 l354
Organic Content 410 210 160
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-8
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
9
July
17
000
000
003
013
130
4294
4434
1127
130
45
9
July
17
Percent
000
000
000
006
012
051
046
9885
290
55
9
July
17
by weight
000
000
019
048
091
628
3616
5597
030
58
9
July
17
000
000
004
022
158
5017
3148
1650
140
B-9
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18al
10
August
1
45
10
August
1
55
10
August
1
58
10
August
1
Percent by weight
000 000
000 004
001 004
009 018
018 088
098 306
049 2510
9824 7070
000
005
045
763
3604
4495
932
156
100 190 060
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-10
Station 18 45 55 58
Survey 11 11 11 11
Month August August August August
Day 17 17 17 17
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000 000
20- 40 -1 005 000 000 000
10- 20 0 021 003 000 210
05- 10 1 064 009 000 159
025- 050 2 226 027 045 2656
0125- 025 3 3259 131 712 3719
00625-0125 4 4327 195 1737 1159
lt0625 (5-12) 2098 9635 7506 2097
Organic Content 210 300 160 100
Ii I
B-11
Station
Survey
Month
Day
Particle size (mm) Phi
gt40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
12
August
29
000
000
012
046
186
3465
4498
17 93
241
45
12
August
29
55 58
12 12
August August
29 29
Percent by weight
000
000
002
009
026
118
189
9656
540
000 000
000 000
003 011
011 028
055 1013
859 5033
1596 1827
7476 2089
1 70 120
B-12
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
_-------------------- shy
B-13
stations known to have higher densities --45 55 and 58 respectively
after Survey 2 Higher benthic invertebrate densities would provide better
statistically identifiable relationships between densities and salinity As
a result of the changes in sampling stations only samples from Station 18
were analyzed for Survey 2 (5 April 1984)
Benthic samples were collected by SCUBA divers using a coring device
The sampler was constructed of 385-cm (inside diameter) PVC pipe which
penetrated 15 cm into the sediment thereby collecting a 924 cm3 sediment
sample (Fig 2) The coring device was operated as follows 1) the sampler
was filled with water on the boat to aid in diver descent 2) on the bottom
the diver removed the bottom cap and pushed the sampler into the sediment
until it stopped at the plexiglass plate (15 cm) and 3) the diver placed
his thumb on the top opening (forming a suction) removed the coring device
from the sediment and replaced the bottom cap All samples were taken
within the confines of a square meter aluminum irame
On the boat samples were washed through a 025-mm mesh screen placed
into labeled jars and fixed and preserved in a 4 formaldehyde solution
that contained rose bengal (a protein stain) At the laboratory samples
were washed of the formaldehyde sol ution and sorted with the aid of a 15X
dissecting microscope Invertebrates were identified to the lowest
practical taxon and counted
Initially 16 benthic cores were taken 15 to be used for benthic
invertebrate analysis and 1 for sediment analysis Subsequent statistical
analysis revealed 10 benthic invertebrate cores were sufficient to
adequately describe the benthic communities So after Survey 4
(1 August 1984) 11 benthic cores were collected per station
4
Opening
Top cap
Plexiglass disc c====tt====tt===J
PVC tubing
Bottom cap
1Scm String
Figure 2--Description of PVC benthic invertebrate sampling device
5
Station number date depth bottom salinity and temperature (taken
with a Beckman RS5-3 salinometer and probe1) sample size total numbers
frequency of occurrence and mean number 1m2 are presented in the Results
Besides the above H Shannon-Weaver diversity function (Shannon and Weaver
1963) SD Simpson diversity value (Simpson 1949) SR species richness
(Margalef 1958) and J species evenness value (Pielou 1966) were
calculated The following formulas were used s
1) H= - L Pi 10g2 Pii=1
where Pi= the proportion of individuals belonging to the ith
species
S = number of species s
2) SD= 1 - L Pi2 i=1
where Pi= the proporti on of individual s be longing to the i I th
species
3) SR= (S - l)loge N
where S= the number of species at the station
N= the total number of individuals at the station
4) J= H Ilog2 S
where H= the Shannon-Weaver diversity value
S = the number of species
Sediments were analyzed by seiving those particles lt 00625 mm were
considered the silt-clay fraction Organic content was determined by
burning at 550degC for 24 h
II Reference to trade names does not imply endorsement by National Marine Fisheries Service NOAA
6
RESULTS
Physical and biological data are presented by station in Appendix A A
list of the benthic invertebrate taxa identified during the survey are
presented in Table 1 Appendix B presents the sediment analysis
DISCUSSION
Although the purpose of this study was to obtain base line information
prior to modification of the ship navigational channel caution must be used
in interpreting the data First the MOBILOIL oil spill on 19 March 1984
may have affected the local benthic invertebrate biota Oil started to
occur in the benthic samples on the third survey (18 April 1984) and
continued until the end of the study (14 September 1984) Al though some
stations had more oil than others effects on the invertebrates were not
obvious Secondly year to year variations in benthic invertebrate species
and densities occur in the marine environment (Gray and Christie 1983)
Whether the benthic infauna in Cathlamet Bay varies cyclically is unknown
The long term stability or cycles need to be determined before changes of
the benthic infauna can be attributed to any habitat modification or
dredging proj ect
Salinity is considered to be the most important factor controlling the
distribution of estuarine animals (Kinne 1966) Since we performed our data
collections primarily at low tide the given salinity values must be
considered low values Chapman and Brinkhurst (1981) showed that seasonal
variations of benthic invertebrates in the Fraser River estuary were
correl ated with salini ty One common freshwater oligochaete species in
their study Limnodrilus hoffmeisteri also occurs in Cathlamet Bay Adult
hoffmeisteri can tolerate salinities up to 10 ppt and immatures 14 to
7
Table 1--List of invertebrate taxa found at benthic invertebrate sites
located in Cathlamet Bay Oregon March through September 1984
Coelenterata Hydra sp
Turbellaria Nemertea Nematoda Nematomorpha Oligochaeta
Vejdovskyella intermedia Limnodrilus hoffmeisteri Ilydrilus frantzi
Polychaeta Neanthes limnicola Hobsonia florida Manyunkia speciosa
Gastropoda Lithoglyphys (=Fluminicola)
Bivalvia virens
Corbicula manilensis Ostracoda
Limnocythera sp Mysidacea
Neomysis mercedis Cumacea Amphipoda
Eogammarus spp Eogammarus confervicolus Corophium salmonis Corophium spinicorne Pontoporeia hoyi Eohaustorius estuaris
Isopoda Saduria entomon
Harpacticoida Scottolana canadensis
Insecta Diptera adult Diptera pupae Heleidae larvae Chironomidae larvae Chironomidae pupae Trichoptera larvae Hymenoptera Collembola
Hydracarina
Occurrence not quantified
8
15 ppt (Chapman and Brinkhurst 1980) This species appears to be a useful
salinity indicator and future benthic work should identify and enumerate
this species Due to time and taxonomic expertise requirements only the
oligochaete species Vejdovskyella intermedia was enumerated Salinity
tolerances of this species are unknown
Since intersti tial salinities do not vary dielly as do salini ties in
the water column (Sanders et al 1965) interstitial salinities should have
been measured Al though many infauna species may be exposed to overlying
water because of activity andor tubes (exCorophium spp) many benthic
invertebrates are dependent on interstitial salinity levels Measurements
of interstitial salinities are necesssary to determine benthic infauna
sensitivity to salinity intrusion
Finally there appeared to be a large amount of within station
variability in the sediment texture particularly at Stations 55 and 58
The sediment at Station 55 ranged from a very fine sand to almost all clay
The sediment texture variability at Station 58 was a result of the uS
Coast Guard moving Can 5 to a new location forcing us to estimate the
previous location of our station
ACKNOWLEDGMENTS
We wish to thank Maurice Laird Nick Zorich Larry Davis Roy Pettit
Edward Koller and David Miller for their assistance in developing the
sampling device and collecting the samples We express special thanks to
Sandy Lipovsky Thomas Moylan and Susan Newhouse for helping sort and
identify the invertebrates
9
LITERATURE CITED
Chapman P M and R O Brinkhurst
1980 Salinity tolerance of some selected aquatic oligochaetes Internat
Rev der Gesamten Hydrobio1gie 65499-505
Chapman P M and R O Brinkhurst
1981 Seasonal changes in interstitial salinities and seasonal movements
of subtidal benthic invertebrates in the Fraser River estuary BC Est
Coast Shelf Sci 1249-66
Gray J S and H Christie
1983 Predicting long-term changes in marine benthic communities Mar
Ecol Prog Sere 1387-94
Kinne O
1966 Physiological aspects of animal life in estuaries with special
reference to salinity Neth J of Sea Res 3 227-244
Margalef R
1958 Information theory in ecology Gen Syst 336-71
McCabe G T Jr W D Muir R L Emmett and J T Durkin
1983 Interrelationships between juvenile sa1monids and nonsalmonid fish
in thl Columbia River estuary Fish Bu11U S 81(4)815-826
Pie10u E L
1966 The measurement of diversity in different types of biological
collections J Theor BioI 13131-144
Sanders H L P C Mange1sdorf and G R Hampson
1965 Salinity and faunal distribution in the Pocasset River
Massachusetts Limno Ocean 10216-229
Shannon L E and W Weaver
1963 The mathematical theory of communication Univ of Illinois Press
Urbana Ill
10
Simpson E H
1949 Measurement of diversity Nature 163688
11
APPENDIX A--Descriptive summary of benthic invertebrate data collected in
Cathlamet Bay Oregon during March through September 1984
STATION 18 Date 13 March 1984 Depth 46 m Salinity (bottom) 11 ppt Temperature (bottom) 67 C No of samples 15
Frequency Density (nom 2 ) Total occurrence
Taxa number (7) X SD
Nemertea 2 67 1145 4434 Nematoda 134 1000 76702 33169 Turbellaria 22 667 12593 15854 ~~n~b~~ imnpoundQ 31 Oligochaeta 486
933 17744 1468 1 100() 278186 138779
~QtQif~12 mnil~nsectisect 24 Ostracoda 39
933 13738 8462 800 22324 17715
~Q[QQbiYm ~lmQni~ 74 867 42358 38B70 EQntQIH~i2 Qyi 1 EQri gnQQn 1 Harpacticoida 7
67 572 2217 67 572 221 7
333 4007 7159 Insecta 2 67 1145 4434 Chironomid larvae 20 667 1144 B 10090 Collembola 95 867 54378 82588 Hydracarina 1 67 572 221 7
Mean number of organismssample 626 Standard deviation 19 1
M ean num b er 0 f 2organIsms III 537484 Standard deviation 163579
H= 237 so= 069 SR= 1 42 J= 061
A-l
STATION 48 Date 13 March 1984 Depth 107 m Salinity (bottom) 05 ppt Temperature (bottom) bB C No of sampl es 15
Frequency Densi ty (nom 2 ) Total occurrence
Taxa number (7) X SD
Nemertea 31 6b7 17744 1849 1 Nematoda 38 667 21751 22685 Oligochaeta 4 133 2290 6859 ~QQpound12 2nil~nsectisect 31 Ostracoda 1
667 17744 29648 67 572 221 7
~Q9~~[~ spp 1 ~Q[Q2l ~~lQnisect 1 ~Q2sectiQisect sectisect 4 Harpacticoida 1
67 572 2217 67 572 221 7
200 2290 5097 67 572 221 7
Insecta 2 133 1145 3021 Diptera adult 1 67 572 2217 Collembola 24 467 13738 30923
Mean number of organismssample 93 Standard deviation 59
Mean number of organismsm2 795b4 Standard deviation 50740
H= 255 SD= 079 SR= 1 55 J= 071
A-2
STATION 54 Date 14 March 1984 Depth 177 m Salinity (bottom) 00 ppt Temperature (bottom) 66 C No of samples 15
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nemertea 47 1000 26903 14096 Nematoda 7 267 4007 9102 Turbellaria 9 333 5152 1114B Oligochaeta 11 333 6296 10989 Gastropoda 1 67 572 2217 ~Q(Qi~Yl mnil~n2i~ Ostracoda
199 3
1000 200
11390B 171 7
97165 3555
gQ[Qehiy sectlmQnisect Harpacticoida
3 1
200 67
171 7 572
3555 221 7
Heleidae larvae 29 867 16600 10989 Chironomid larvae 2 133 1145 3021 Collembola 2 67 1145 4434
Mean number of organismssample 209 Standard deviation 103
2Mean number 0 f organIsms m 179734 Standard deviation 88247
H = 1 86 SD= 056 SR= 1 33 J= 052
A-3
STATION 57 Date 13 March 1984 Depth 91 m Salinity (bottom) 00 ppt Temperature (bottom) 63 C No of sampl es 15
Frequency Densi ty (no 81 2) Total occurrence
Taxa number (X) X SD
Nemertea 27 667 15455 13459 Nematoda 8 400 4579 6381 Turbellaria 4 200 2290 5097 Oligochaeta 8 400 4579 6381 ~g[gipound~l mnilui Ostracoda
1 1
67 67
572 572
2217 2217
~Qgml[a spp 1 67 572 2217 ~Q[Qeni~m lmQnisect Harpacticoida
2 1
133 67
1145 572
3021 221 7
Insecta 3 67 171 7 b651 Chironomid larvae 1 b7 572 221 7 Collembola 37 400 21179 65700 Hydracarina 1 67 572 221 7
Mean number of organismssample 63 Standard deviation 82
Mean number of organismsm2 54378 Standard deviation 70029
H= 253 SD= 075 SR= 1 83 J= 068
A-4
STATION 18 Date 5 April 1984 Depth 30 II
Salinity (bottoll) 00 ppt Temperature (bottom) 90 C No of samples 15
Frequency Densi ty (no1I 2) Total occurrence
Taxa number (i ) If S D
Nemertea 11 bOO 6296 6042 Nematomorpha 2 133 1145 3021 Nuatoda 119 1000 6811 6 50947 Turbellaria 20 600 11448 13640 ~~~nin~sect liIDni~Q12 Oligochaeta
33 481
1000 1000
18889 275324
10364 142326
~Q~Qi~Yl m2nil~ni2 23 600 13165 1371 7 Ostracoda 33 933 18889 10861 gQ(QQrriYID sect2mQnisectHarpacti coi da
38 7
933 133
21751 4007
13329 13328
Chironomid larvae 16 667 9158 8868 ColI embola 1 67 572 2217
Mean number of organismssample 523 Standard deviation 227
M b f 2ean num er 0 organIsms m 448762 Standard deviation 194508
H= 202 SD= 059 SR= 114 J= 0S6
A-5
STATION 45 Date 18 April 1984 Depth 64 III
Salinity (bottom) 00 ppt Temperature (bottom) 95 C No of samples 15
Total Frequency occurrence
Density (noI 2 )
Taxa number (X) X SD
Nematoda 171 1000 97890 92277 tyg~ sp Turbellaria
1 29
67 600
572 16600
221 7 23506
H~nng~ imDi~g tQQsectQl fg~ig Oligochaeta ~Q[Qi~Y2 m2niD~i Ostracodamiddot
9 41
367 42
100
400 1000 1000 800
1000
5152 23469
210071 24041 57240
781 5 13563
100542 19254 43134
~Q[Qeniym amQnisectHarpacticoida Heleidae larvae
37 2049
1
933 1000
67
21179 117284B
572
189B5 616612
221 7 Chironomid larvae 3 200 171 7 3555 Collembola 1 67 572 221 7 Insect parts 1 67 572 221 7
Mean number of organismssample 1901 Standard deviation 864
b f 2nean num er 0 organIsms m 1632485 Standard deviation 741931
H = 1 52 SD= 046 SR= 1 13 J= 040
A-6
STATION 18 Date 18 April 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom) No of samples 15
Frequency Density (nom2) Total occurrence
Taxa nueber (X) x s D
Nemertea 13 533 7441 9663 Nematomorpha 3 200 171 7 3555 Nematoda 195 1000 111618 63675 Turbell ari a 9 467 5152 6326 ~~ni~~ i~ni~Ql~ 30 867 17172 129B1 Oligochaeta 580 1000 331992 108880 ~QC~i~Ml~ m~nil~n~isectOstracoda
28 18
1000 667
16027 10303
11179 10364
~Q[Q~~iYm sect~Qni2 sect~ci~ gniQQnHarpacticoida
105 1
17
1000 67
400
60102 572
9731
25553 2217
19970 Chironollid larvae 16 667 9158 8B6B
Hean number of organismssample 677 Standard deviation 199
M ean num b I 2er 0 f organIsms AI 580986 Standard deviation 171095
w = 202 SD= 062 SR= 1 10 J= 056
95 C
A-7
STATION 58 Date 18 April 1984 Depth 67 m Salinity (bottom) 00 ppt Temperature (botto) No of samples 15
Frequency Density (nom2) Total occurrence
Taxa number (~) X SD
Nemertea 62 933 35489 26338 Nematoda 224 1000 128218 49903 Turbellaria 9 600 5152 4354 ~nt~sect imni~Q Oligochaeta
1 79
67 1000
572 45220
2217 23506
bnQgYRhY~ Yi~~nE ~Q(~i~Y nil~ni Ostracoda
2 10 19
67 533 600
1145 5724
10876
4434 6214
10989 ~Q[QeniY sectQOiHarpacticoida
30 2
B67 133
17172 1145
12142 3021
Heleidae larvae 6 333 3434 5430 Chironomid larvae 9 400 5152 7B1 5 Chironomid pupae 2 133 1145 3021
Mean number of organismssample 303 Standard deviation 94
I 11 ean num ber 0 f organlsms 2 260442 Standard deviation 81043
H= 233 SO= 070 SR= 1 36 J= 063
97 C
A-B
Frequency Density (nolm 2) Total occurrence -----------------
Taxa number (7) X SD
Nemertea 16 467 9158 10989 Nematoda 266 1000 152258 54541 Turbellaria 23 600 13165 15518 ~l~nH ~Q~iQH 2 133 1145 3021 Oligochaeta 181 1000 103604 56532 bi~hQg~Qn~~ ~it~l~ ~QtQifg mli~lsectisectOstracoda
3 59 15
200 1000 733
1717 33772 8586
3555 23054
7256 ~Q[QQhiY HmQtlsect ~Q[QehiYm sect21tlfQ[lg EQlQQQt~i hQ~i
466 3 1
1000 200 67
266738 171 7 572
75094 3555 221 7
Harpacticoida 30 400 17172 40402 Chironomid larvae 10 533 5724 6214
Mean number of organismssa_pIe 717 Standard deviation 143
I 2Mean number 0 f organlsms m 615330 Standard deviation 122532
H= 226 SO= 072 SR= 119 J= 061
STATION 55 Date 18 April 1984 Depth 30 1ft
Salinity (bottom) 00 ppt Temperature (bottom) 93 C No of SaIIples 15
A-9
STATION 45 Date 4 Hay 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 103 C No of samples 10
Frequency Density (noI2) Total occurrence ---------------- shy
Taxa number (Xl X SD
Neutoda 269 1000 230963 167296 Turbellaria 1 100 859 2715 ~u~yuti Q~iQ ~Ub imni~Q
1 2
100 100
859 171 7
2715 5430
j2~Qn flec Oligochaeta
28 169
BOO 1000
24041 145103
19326 74351
~igeYk~ll iulCIDai ~Q(Qi~Y uini Ostracoda
32 4 5
aoo 400
400
27475 3434 4293
22463 4434 6071
biQQ~~tbt sp ~e(QQbYm mQoi sectampQeD ~nQDisect Chironomid larvae
25 2
578 2
900 200
1000 200
21465 1717
496271 171 7
15279 3620
293820 3620
Mean number of organismssample 111 8 Standard deviation 522
11 b f I 2ean num er 0 organIsms m 95991 5 Standard deviation 447842
H= 193 SD= 065 SR= 118 J= 052
A-10
STATION 18 Date 4 Hay 1984 Depth 34 II
Salinity (bottom) 00 ppt Temperature (bottom) 104 C No of saMples 10
Frequency Density (noI 2 ) occurrence ----------------shy
Taxa (X) X SD
Nemertea 10 600 8SB6 10709 Nuatoda 153 1000 131366 47899 Turbellaria 8 600 6869 6773 ~n1b limnpoundQl Oligochaeta
11 147
700 1000
middot9445 126214
9449 6231 7
~i~g~kXl in1(m~i ~g(2iY OiOi Ostracoda
86 4 1
900 300 100
73840 3434 859
61543 6003 2715
bimoQpoundx1b( sp ~2(QQbiYm mgoiDi ptera adult
3 57
3
300 900 300
2576 48940
2576
4147 21815 4147
Chironomid larvae 4 300 3434 6003 Chironomid pupae 1 100 859 2715
Hean nUMber of orQanismssample 489 Standard deviation 160
b f 2nean nUll er 0 organIsms II 418997 Standard deviation 137721
H= 243 SD= 076 SR= 1 34 J= 066
A-l1
STATION 5B Date 4 Hay 1984 Depth 61 bull Salinity (botto~) 00 ppt Temperature (bottom) 110 C No of suples 10
Frequency Density (nom 2) Total occurrence ---------------- shy
Taxa number (X) X SD
Neertn 41 1000 35203 21206 Nematoda 211 1000 181165 53305 Turbellaria 4 200 3434 7240 Oligochaeta 89 1000 76415 32240 ~i~2~~~11~ iU1(~i~bi1begygny YitQ ~e(biYl ~OiDi OstracDda
4 3
20 1
400 200 BOO 100
3434 2576
17172 859
4434 5795
19829 2715
biue~1bt~ sp ~2(egniY Imeoi sectg11g1O OdD Helei dae larvae
5 32
1 1
400 900 100 100
4293 27475
859 859
6071 18010 2715 2715
Chironomid larvae 7 400 6010 9096
Mean number of organismssample 419 Standard deviation 93
b f 2ean nUll er 0 organIsms m 359753 Standard deviation 79875
H= 221 SD= 068 SR= 138 J= 060
A-12
Frequency Density (nolm 2) occurrence -----------------
Taxa (X) X SD
Nemertea 23 900 1974S 15171 Neutollorpha 1 100 859 271 5 Nellatoda 269 1000 230963 69923 Turbellaria 10 600 8586 991 4 ~~xYnki Q~ampiQ 4 300 3434 6003 ~nb limnipoundQl Oligochaeta
1 79
100 1000
859 67829
2715 40363
~i~Q~kXl io[~i biDe9XQDX ~i[~OBi valvi a
11 3 1
800 300 100
9445 2576 859
6335 4147 271 5
~Q[~poundY mnil~n bimoQampXD[ sp ~Q[QabiY lQO Harpacticoida
18 2
159 1
700 200
1000 100
15455 171 7
135659 859
13904 3620
54272 2715
Chironomid larvae 2 200 171 7 3620 Trichoptera larvae 1 100 859 2715
STATION 55 Date 4 May 1984 Depth 21 m Salinity (bottom) 00 ppt Temperature (bottom) 107 C No of suples 10
Mean number of organismssamples 594 Standard deviation 147
Mean number of organismsm2 501422 Standard deviation 126525
H= 219 aD= 069 SR= 1 63 J= 055
A-13
STATION 45 Date 17 May 1984 Depth 61 m Sal i ni ty (bottom) 01 ppt Temperature (bottom) 121 C No of sampl es 10
Frequency Total occurrence
Taxa nUlllber (7)
NelDertea 1 100 859 2715 Nematoda 163 1000 139952 127996 Polychaeta 1 100 859 2715 ~~~n~h~ imni~Qs Hobsonia florida
2 6
200 600
171 7 5152
3620 4434
Oligochaeta 329 1000 282479 13291 8 ~~lQQYsectk~~12 in~~rmQi 57 900 48940 33142 ~Qr~ipound~2 ffi2niDi 6 500 5152 6003 Ostracoda 5 200 4293 10898 bimDg~yth( SPa 13 600 11162 12176 ~Q(Qebi~m sectQDisect Harpacticaida
2 2
200 100
1717 1717
3620 5430
2poundQttQD poundDQDsectisectDiptera adult
296 1
1000 100
254146 859
172633 271 5
Mean number of organismssample 884 Standard deviation 326
b f I 2nean num er 0 organlss m 759002 Standard deviation 280131
H= 209 SD= 071 SR= 1 33 J= 055
A-14
STATION 18 Date 17 May 1984 Depth 30 m Salinity (bottom) 00 ppt Temperature (bottom) 122 C No of samples 12
Frequency Density (nom2) Total occurrence -----------------
Taxa number (X) X SD
Nematoda 50 833 35775 22815 ~ntb limnipoundQl 3 Oligochaeta 97
250 833
2147 69404
3883 48495
~igQ~~k~ intr~ 27 ~QrQipoundY mnin~i~ 5
667 333
19319 3S7S
19068 5740
Ostracoda 1 83 716 2479 bimnQpound~nr sp 5 ~Q(Q~bY ~mQni S4 ~Q(Q~niY ~QinipoundQ(n 3
333 833 250
3578 60102
2147
5740 43780 3883
fgnQ2Q(i bQ~i 1 sectpoundQtgO poundnQn~i 2 Chironomid larvae 4
83 167 250
716 1431 2862
2479 3342 5592
Mean number of organismssample 235 Standard deviation 116
nean nURl b er 0 f organlslls II 2 201771 Standard devi ati on 99221
H= 236 SD= 075 SR= 1 35 J= 066
A-15
STATION 58 Date 17 May 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) 123 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nemertea 2 100 171 7 5430 Nematoda 75 1000 64395 34404 ~~2Qih~a limQi~Q 2 200 171 7 3620 Oligochaeta 60 1000 51516 33376 ~~igQY~~~12 iQ~[~~gi 2 200 171 7 3620 bitQQ9~Bh~sect Yr~Qsect 3 200 2576 579~
gQ[Qi~Yl ID2Dil~nsectisect Ostracoda
6 6
500 400
5152 5152
6003 8295
binQ~~nr[ sp gg[QQOYm mQQsect sect~QttQn 5n2Q~nsectia Chironomid larvae
2 34
1 1
200 1000
100 100
171 7 29192
859 859
3620 12927 271 5 2715
Mean number of organismssample 194 Standard deviation
2Mean nurn ber 0 f organIsms fA 166568 Standard deviation 56259
H= 225 SD= 072 SR= 1 45 J= 063
A-16
66
STATION 55 Date 17 May 1984 Depth 24 II
Salinity (bottom) 00 ppt Telllperature (bottom) 126 C No of samples 10
Total Frequency occurrence
Taxa nUllber (X) X SD --------------------------------------------------------------~-----------
Nematollorpha 2 200 171 7 3620 Nematoda 63 1000 54092 35297 Oligochaeta 94 1000 80708 44004 ~~iQQY~k~~l iQt~(m~Qi bitnQg~Qh~~ Yi[~Q gQ[QipoundY~ mni~Q~i Ostracoda
10 9 4 2
600 800 300 100
8586 7727 3434 171 7
9050 4874 6003 5430
bimnQ~~ln~[e sp ~Q(QQbiYm mQD ~Q[QQbiYm 2inipoundQ[n~ Chironomid larvae
6 142
3 1
600 1000 200 100
5152 121921
2576 859
4434 50682 5795 2715
Mean number of organismssample 336 Standard deviation 62
2Mean num ber 0 f organisms m 288490 Standard deviation 53421
H= 214 SD= 071 SR= 119 J= 062
A-17
STATION 45 Date 1 June 1984 Depth 61 m Salinity (bottom) 01 ppt Temperature (bottom) 139 C No of samples 10
Total Frequency occurrence
Density (no2)
Taxa nUllber (1) X SD
Nematoda 174 900 149396 132347 Turbellaria 5 200 4293 10898 ~~~QiQ~sect tmQtpoundQ~ ~QQsectQ flQi~sect Oligochaeta ~~iQQysecttygl~ iQl~rm~~i2 ~Q[Qi~~l~ ~~DilgDsectisect Ostracoda
5 20
190 103
12 5
400 900
1000 900
60 (I 400
4293 17172
163134 88436 10303 4293
6071 8095
92563 51524 11304 6071
bimnQpoundytng[ sp ~gQmYsectisect IDg[pound~Qisect ~Q[QQhi~m sectlmQDisect sectpoundQtiQlsectQ pound~Qgsectisect ChironQmid larvae
33 1
10 375
2
900 100 700
1000 200
28334 859
8586 321975
171 7
17196 2715 7010
179201 3620
Mean number of organismssample 935 Standard deviation 254
nurn b 0 f 2lean er organlsms m 802791 Standard deviation 218423
H= 239 SD= 075 SR= 1 22 J= 065
A-18
STATION 18 Date 1 June 1984 Depth 30 AI
Salinity (bottom) 00 ppt Temperature (bottom) 134 C No of samples 11
Frequency Density (no 1m2)
Taxa Total number
occurrence (X)
---------------- shyX SD
Turbellaria 14 636 10928 1157 7 ~~~Qltlg~ ilipoundQ~ Oligochaeta
10 178
727 1000
7805 138937
601 6 67913
~~iQQy~tY~l~ ill~[m~Qi~ 122 636 95227 93619 ~Q[Qipound~ l~i~lsectisect Ostracoda
7 1
455 9 1
5464 78 1
6946 2589
billQylhg[ Spa 16 818 12489 10420 GQ[QQQil HQi~ 139 1000 108496 70934 gQ[Qebi secteiifQ[~ sectQiiQi2 ~Q~sectisect Diptera pupae
1 2 1
9 1 182
11 1
781 1561 781
2589 3473 2589
Chironomid larvae 2 182 1561 3473
Mean number of organismssample 714 Standard deviation 284
nean num b er 0 f organlsms m 2 612728 Standard deviation 244249
H= 232 SD= 075 SR= 1 25 J= 063
A-19
STATION 58 Date 1 June 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 138 C No of samples 10
Frequency Density (noI 2 ) Total occurrence
Taxa number (X) X SD
Nematoda 173 1000 148538 47383 Turbellaria 3 300 2576 4147 Oligochaeta 53 1000 45506 32139 ~giQgY2k~g~ ini~[m~Qi~ bQg91YehY2 Yi[~nsect ~Qr~i~Yl m~nl~n~i
26 1
10
600 100 500
22324 859
8586
3391 2 2715
13424 bimnQpound~Q~[ sp ~Q9~m[Y poundgnitYpoundQlysect ~QtQehiYm ~lQni
4 1
46
200 100
1000
3434 859
39496
8295 2715
22243 Chironomid larvae 1 100 859 271 5
Mean number of organismssample 318 standard deviation 103
M b f I 2ean num er 0 organlsms III 273035 Standard deviation 88842
H = 1 99 SD= 065 SR= 1 08 J= 060
A-20
STATION 55 Date 1 June 1984 Depth 27 m Salinity (bottom) 00 ppt Temp era t u r e (b 0 t tom) 140 C No of samples 10
Frequency Density (nom 2 ) Total occurrence
Taxa nueber (X) X SD
Nematoda 157 1000 134800 69524 Turbellaria 9 400 7727 13696 tlHl~lk ~2~~iQH 1 100 859 2715 Oligochaeta 49 1000 42071 32745 ~~iQQysect~gl~ S[l9sect bHbQghQb~~ Yirl~
10 1
400 100
8586 859
12799 2715
tQ[Qpoundls l2lilUsect bilQHSbg[ sp ~QrQQbil nllQisectHarpacticoida
4 7
134 1
400 500
1000 100
3434 6010
115052 859
4434 7069
44742 271 5
sectpoundQUQlls poundsQgn~sect Chironomid larvae
1 1
100 100
859 859
271 5 2715
Hydracarina 1 100 859 2715
Hean number of organismssample 376 Standard deviation 132
M b f 2ean num er 0 organIsms m 322834 Standard deviation 113127
H= 202 SD= 068 SR= 1 40 J= 055
A-21
STATION 45 Date 18 June 1984 Depth 67 m Salinity (bottom) 01 ppt Temperature (bottom) 149 C No of samples 10
Frequency Density (nom2)
Taxa Total nUllber
occurrence ex) i SD
Nematoda 109 1000 93587 3891 7 Turbell ari a 3 200 2576 5795 ~g~tbg limoipoundQl Q~Qni2 fQ(i~2 Oligochaeta ~gigQ~~Y inl[ggi ~Q[QiSY2 moilo Ostracoda
3 2
194 44
7 3
200 200
1000 1000 200 200
2576 171 7
16656B 37778 6010 2576
5795 3620
118364 36020 12831 5795
bimoQampl~n~[2 sp ~Q[QQbiYm lmgoi Harpacticoida sectpoundQQ1202 pound2022Osect Chironomid larvae
68 1 1
113 2
900 100 100
1000 200
58385 859 859
97022 171 7
97627 2715 2715
73976 3620
Mean number of organismssa_pie 550 Standard deviation 371
Mean nUll ber 0 f organIsms 2II 472230 Standard deviation 318519
H= 242 SD= 077 SR= 1 32 Ja 065
A-22
STATION 18 Date 18 June 1984 Depth 34 m Salinity (bottom) 00 ppt Temperature (bottom) 155 C No of samples 10
Frequency Density (nom 2) Total occurrence ----------------shy
Taxa nUlber (Z) X SD
Neutoda 291 1000 249853 138826 Turbellaria 1 100 859 2715 ~~n~~nki~ sectQ~~iQ~2 ~g~ntbg2 limni~Q9 Oligochaeta
1 3
123
100 300
1000
859 2576
105608
271 5 4147
48240 ~~igQY~~~~9 int~(mgii ~Q[~i~~~ mini~ni bimnQ~ylbg(~ Spa
67 6 5
1000 500 400
57526 5152 4293
40485 6003 6071
~Q(QebiYm ~imQnisect Harpacticoida
80 2
1000 200
68688 171 7
41276 3620
sect~QttQini ~2nig~n~i Chironomid larvae
2 4
200 300
171 7 3434
3620 6003
Mean number of organismssample 585 Standard deviation 194
I 2Mean urn b er 0 f organIsms m 502281 Standard deviation 166943
H= 203 SD= 068 SR= 1 20 J= 057
A-23
STATI ON 58 Date 18 June 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (noI 2) Total occurrence
TaKa number (X) X SD
Nellertea 2 100 1717 5430 Nematoda 160 1000 137376 6361 1 Turbellaria 4 400 3434 4434 Oligochaeta 36 1000 3091 0 14705 ~iQQYik~ Q1rQ 4 300 3434 6003 bitnQgl~ebysect YrDsect ~Q[QiY~ ~~nni biQQpoundY1h[ sp ~Q[Qeng ~ilQD Chironomid larvae
3 1 3
61 1
300 100 300
1000 100
2576 859
2576 52375
859
4147 2715 4147
1428 1 2715
Chironollid pupae 1 100 859 271 5
Mean number of organismssample 276 standard deviation 72
nean nurn b er 0 f organIsms I 2 236974 Standard deviation 61410
H = 1 78 SD= 060 SR= 1 23 J= 051
A-24
STATION 55 Date 18 June 1984 Depth 18 m Salinity (bottom)1 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (no 1m2) occurrence
Taxa (X) X SD
Nematoda 160 1000 137376 43967 Turbellaria 1 100 859 271 5 Oligochaeta 61 1000 52375 31985 ~~iQQY~kY~~ int~[mQi~ ~Q[Qipound~l~ m~nini~ biIDnQ~Ylb[s sp
3 3 3
300 300 300
2576 2576 2576
4147 4147 4147
~Q[Q~bi~ ~slIDQni~ Chironomid larvae
85 6
1000 600
72981 5152
34165 4434
Mean number of organismssample 322 Standard deviation 75
2Mean number 0 f organIsms m 276469 Standard deviation 64099
H= 178 5D= 065 SR= 0B4 J= 059
A-25
Frequency Density (no2) occurrence -----------------
Taxa (7) X SD
Nematoda 104 1000 89294 47409 Turbell ar i a 1 100 859 2715 ~~~nQ~sect imni~Q~ tjQQsectQlis flQig~ Oligochaeta
2 1
297
100 100
1000
171 7 859
255004
5430 271 5
146273 ~~i~QYsect~Y~lls ilr2is gQrQi~y~ IDDilDia
24 4
600 300
20606 3434
27212 6003
Ostracoda 2 200 171 7 3620 biDQSy~b~C~ sp M~QYsectisect m~r~~Qi ~QrQeniy QD Harpacticoida
157 1 1 1
900 100 100 100
134800 859 859 859
73197 2715 2715 2715
sectpoundQttQDs SsDQD 113 900 97022 61656
STATION 45 Date 2 July 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) No of samples 10
172 C
Mean number of organismssample 708 Standard deviation 339
M ean num b er f 20 organisms 607889 Standard deviation 290B22
H= 216 SD= 073 SR= 1 27 J= 058
1-26
STATION 18 Date 2 July 1984 Depth 24 WI
Sal inity (bottom) 00 ppt Temperature (bottom) 172 C No of samples 10
--------------------------------~-----------------------------------------Frequency Density (nom2)
Total occurrence Taxa number (7) X SD
Nematoda 202 1000 173437 113532 ~~~nih~sect mnpoundQ~ Oligochleta
4 102
400 1000
3434 87577
4434 54873
~~igQYsect~Y~12 inl~rmgi2 ~Q[~poundYl~ m~ni~nsectisect bimnQpoundylh~[~ Spa
115 4
15
900 300 900
98739 3434
12879
100720 6003 9274
~Q[QQniY~ sect~QDi~ 55 900 47223 40525 Harpacticoida 1 100 859 2715 sectpoundQiiQlD SDg~DEisect Chironomid larvae
2 6
200 400
1717 5152
3620 7240
Hymenoptera 1 100 859 2715 Hydracarina 1 100 859 2715
Mean number of organismssample 508 Standard deviation 253
2Mean num ber 0 f organIsms m 436169 Standard deviation 217580
H= 225 SD= 074 SR= 1 22 J= 063
A-27
STATION 58 Date 2 July 1984 Depth 58 1
Salinity (bottom) 00 ppt Temperature (bottom) IBO C No of samples 10
Frequency Density (no2) Total occurrence
Taxa number ltX) i SD
Nematoda 151 1000 129649 42729 Turbellaria 1 100 859 2715 01 i gochaeta 41 1000 35203 22698 ~~i~e~~~ int~~m~~ 3 200 2576 5795 btbQglYRhY~ Yir~n~ ~e~~ampy mni~niii bimQeamp~tb~ sp ~e~eQhiY ~mQni Chironomid larvae
1 4 2
68 1
100 300 200
1000 100
859 3434 171 7
58385 859
271 5 6003 3620
1557 1 2715
Mean number of organisassample 272 Standard deviation
I 2Mean num ber 0 f organIsms I 233539 Standard deviation 62546
H = 1 69 SD= 061 SR= 099 J= 053
A-28
73
STATION 55 Date 2 July 1984 Depth 15 III
Salinity (bottom) 00 ppt Temperature (bottom) 182 C No of samples 10
Frequency Density (nom2) occurrence
Taxa (X) X SD
Nematoda 184 1()00 157982 5264B Turbellaria 1 100 859 271 5 Oligochaeta ~~iQQ~sect~Y~ll~ n~[~~Qi~ bitnggYQDYsect Yi[~nsect ~QrQipoundM2 m2ni~nsectisect bimnQpoundYn~[2 sp ~QrQQhiM Qni Harpacticoida
91 2 1 B 2
96 2
1000 200 100 500 200
1000 200
78133 171 7 859
6869 171 7
82426 1111
26058 3620 271 5 1890 3620shy
25980 3620
ChirDnomid larvae 5 400 4293 6071 Chironolllid pupae 1 100 859 2715
Mean number of organismssample 393 Standard deviation 53
2t1ean nUllber Df organlsms III 337430 Standard deviatiDn 45080
H= 187 SD= 067 SR= 116 J= 054
A-29
STATION 45 Date 17 Jul y 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (X) X SD
Nematoda 215 1000 184599 45837 ~~n~b~~ imDipoundQ Qe~Qni fllHi2
3 1
300 100
2576 859
4147 2715
Oligochaeta 305 1000 261873 147955 ~~iQQY~k~ in~rm~2i ~Qr~ipoundYl IDniln~i~ Ostracoda
17 1 2
500 100 200
14590 859
171 7
22554 2715 3620
bmnQpound~ihr sp ~QCQQhiY ~lQD~
176 1
1000 100
151114 859
57125 2715
Harpacticoida 4 300 3434 6003 sectQ~~Qn poundnQnai~ Chironomid larvae
91 5
1000 400
78133 4293
61310 6071
Mean number of organismssample 821 Standard deviation 275
M b f 2ean num er 0 organlsms m 70491 1 Standard deviation 236369
H= 215 SD= 073 SR= 114 J= 060
A-30
STATION 18 Date 17 Jul y 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom 203 C No of samples 10
Frequency Density (001 2 Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 339 1000 291065 119140 Turbellaria 3 200 2576 5795 ~~2~b~~ limnipoundQ12Oligochaeta
4 18S
300 1000
3434 161417
6003 89393
~~iQQy~~~ls in~(ID~Qi bim~Qampy~bg(2 Spa
34 16
800 700
29192 1373B
22967 15252
~g(gebi~m ~21mQni2 Harpacticoida
52 3
1000 200
44647 2576
25212 5795
2ampQ11Q1202 ampS02Qg~2i2 Chironomid larvae
18 10
700 700
15455 8586
13904 701 0
Mean number of organi$mssample 667 Standard deviation IBB
H ean nurn b er 1 20 f organIsms m 572686 Standard deviation 161750
H = 1 99 SD= 065 SR= 090 J= 060
A-31
STATION 58 Date 17 July 1984 Depth 55 AI
Salinity (bottom) 00 ppt Temperature (bottom) 197 C No of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nellatoda 173 1000 14853B 66390 Turbellaria 1 100 859 271 5 ~~~n~hu ini~QA Oligochaeta
1 46
100 1000
859 39496
2715 26293
~gipoundQy~~ygl2 in~rJg~i~ b1nQglYRnY~ Yi( Bivalvia
6 2 1
400 200 100
5152 1717 859
8295 3620 271 5
ei~ IDnH~n~i~ 2 200 171 7 3620 Ostracoda 1 100 959 271 5 biIDQHlh~( Spa ~Q(QRbim ~21Qnisect Diptera pupae
1 94
1
100 1000 100
859 80708
859
2715 35332 2715
Heleidae 1arvae 5 500 4293 4525 Chironomid larvae 1 100 859 2715
Mean number of organismssample 335 Standard deviatiDn 113
Mean number of organismsRI2 287631 Standard deviation 97413
H= 1 86 SO= 064 SR= 155 J= 049
A-32
STATION 55 Date 17 July 1984 Depth 18 m Sali nity (bottom) 00 ppt TeAlperature (bottom) 199 C No of samples 10
Frequency Density (nom2 ) occurrence
Taxa (X) x S D
Nematoda 61 1000 52375 33972 Turbellaria 1 100 859 2715 Oligochaeta 24 900 20606 11590 ~~i2QY~k~~1 iOi[2 bimDQ~xlb~r sp ~Q[QQhi~ sectgni~ Chironomid larvae
3 1
38 3
200 100
1000 300
2576 859
32627 2576
5795 2715
19326 4147
Mean number of organismssample 131 standard deviation 54
M b f 2ean num er 0 organIsms 112477 Standard deviation 46757
H= 184 SD= 066 SR= 085 J= 065
bull
A-33
STATION 45 Date 1 August 1984 Depth 58 m Sal i nity (bottoll) 03 ppt Temperature (bottom) 203 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa nUllber (X) X SD
Nematoda 145 1000 124417 52344 Turbellaria 1 100 859 2715 Mmth~sect iHpoundQ~ Q~~Qi ilQ[i9Oligochaeta
5 3
196
500 300
1000
4293 2576
168286
4525 4147
91064 ~igQYsect~~li int9i Ostracoda
2 3
100 300
171 7 2576
5430 4147
bimnQpoundtl sp ~Q[Q2hiY sectlQni~
240 6
1000 600
206064 5152
73526 4434
sectpoundQtQl poundngnai~Helei dae larvae
1862 1
1000 100
1598713 859
966134 271 ~
Mean number of organismssample 2464 Standard deviation 1156
211 ean num ber 0 f organIsms II 2115590 Standard deviation 992518
H= 124 SD= 041 SR= 089 J= 036
A-34
STATION 1S Date 1 August 1984 Depth 24 II
Salinity (bottom) 00 ppt Temperature (bottom) 198 C No of samp I es 10
Frequency Density (nom2) occurrence ---------------- shy
Taxa (X) X S D
Nuertea 1 100 859 2715 Nellatolllorpha 1 100 859 2715 Nematoda 248 1000 212933 108288 Turbellaria 4 400 3434 4434 ~untb~la Hli~g Oligochaeta
4 206
400 1000
3434 176872
4434 75309
~~igQYli~dli i[t~(gi~ ~QtQpound l binQ~ybt2 sp ~2l~bi Q[i ~2tlgtQ(ila tirisect sectpoundQtel poundl9lla Chironomid larvae
10 1
20 205
1 574
9
500 100 800
1000 100
1000 400
8586 859
17172 176013
859 492836
7727
10709 271 5
14021 48104
271 5 150531
13696
Mean number of organismssample 1284 Standard deviation 290
M b f I 2ean nurn er 0 organIsms III 1102442 Standard deviation 2488B5
H= 211 SD= 071 SR= 1 16 J= 057
A-35
STATION 58 Date 1 August 1984 Depth 55 m Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samp 1es 10
Frequency Densi ty _ ltnom2 ) Total occurrence
Taxa number (7) X SD
Nemertea 1 100 859 2715 Nematoda 22 900 18889 15036 Turbellaria 1 100 859 2715 Oligochaeta 19 700 16313 17385 biiQQgl~QhY~ YiCg~~ 2 200 171 7 3620 ~Q[~i~~l~ m2nil~n2i2 ~Q[QehiYm ~lmQni2
4 164
300 1000
3434 140810
6003 103048
Heleidae larvae 8 500 6869 8868
Mean number of organismssample 221 Standard deviation 111
I 2Mean num ber 0 f organIsms m 189751 Standard deviation 95391
H = L 37 SD= 043 SR= 090 J= 046
A-36
STATION 55 Date 1 August 1984 Depth 15 m Salinity (bottoll) 01 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (i ) X SD
Nemertea 1 100 859 2715 Neutoda 122 1000 104749 7394B Turbellaria 4 300 3434 6003 ~~~~~nt~ secte~poundQa~ Oligochaeta
1 118
100 1000
859 101315
2715 61223
~giQgY~k~~l iot~[m~Qi btbQg~2b~ Y[O ~grQipound~ ~nl~ni b~ngpound~tb~[ Spa
3 1 5 1
200 100 500 100
2576 859
4293 859
5795 2715 4525 2715
~Q[QebiYm ~mQoi sect~QttQ~ ~OQOi Heleidae larvae
42 2 2
800 200 100
36061 171 7 171 7
21341 3620 5430
Chironomid larvae 4 400 3434 4434
Mean number of organismssapIe 306 Standard deviation 169
M b f I 2ean nurn er 0 organIsms m 262732 Standard deviation 145101
H = 198 SD= 067 SR= 1 45 J= 054
A-37
~-- --------------~~-------------
STATION 45 Date 17 August 1984 Depth 61 1
Salinity (bottom) 10 ppt Temperature (bottom) 210 C No of samp 1es 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nematoda 240 1000 206064 130213 ~~h~sect limQ tjQ~~Hi~ fQ[i~~ Oligochaeta
31 2
245
400 100
1000
26617 1717
210357
75228 5430
121374 babgglYQbl~ Yi[~sect 1 100 859 2715 Ostracoda 1 100 859 271 5 biQ~xtb~[ Spa ~~Q~~isect ~[pound~Qisect ~Qgebi HQOi
333 2
143
1000 200
1000
28591 4 171 7
1227BO
106553 3620
106860 sectpoundQUg~ poundg~nsectisect 1738 1000 1492247 68441 7
Mean number of organismssample 2736 Standard deviation 944
M b f I 2ean num er 0 organlslls m 2349130 Standard deviation 810600
H= 172 SD= 056 SR= 079 J= 052
A-38
STATION 18 Date 17 August 1984 Depth 27 III
Sal i ni ty (botto) 01 ppt Temperature (bottom) 214 C No of samples 10
Frequency Density (nom 2 ) occurrence
Taxa (X) X SD
Nematoda 186 1000 159700 62468 ~tgt SPa 2 100 171 7 5430 Turbellaria 8 400 6869 8868 ~~ntbg2 imnipoundQ 12 700 10303 11304 Oligochaeta 283 1000 242984 90509 ~~iQQY~~Y~lls inlgtmggisBivalvia
4 1
400 100
3434 859
4434 271 5
~Qt~i~Y nilnsectisectbimnQpoundttbg[s SPa ~QtQQbi~ islmQDi2
1 17
286
100 900
1000
859 14596
245560
271 5 10747 83461
sectpoundetteln poundDsggnsectisect Chironomid larvae
526 4
1000 3Q0
451624 3434
179610 6003
Mean number of organismssapIe 1330 Standard deviation 162
Mean nurn ber I 20 f organIsms m 1141938 Standard deviation 139389
H= 214 SD= 073 SR= 1 06 J= 060
A-39
STATION 58 Date 17 August 1984 Depth 55 II
Salinity (bottom) 01 ppt Temperature (bottom) 220 C ND of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (7) x S D
Nematoda 68 1000 58385 27689 Turbellar i a 4 200 3434 8295 Oligochaeta 19 800 16313 13084 ~~i~Q~k~~l~ in~~[m~i bitUQ9Y2bYa Yi[~na Bivalvia
3 3 4
300 300 300
2576 2576 3434
4147 4147 6003
gQ[QipoundYl~ mnilDa 1 100 859 2715 binQpoundY~[ sp gQ[Q2UY a~mgnia sect~Qtgl~n ~n~~ni
2 338
6
100 1000 400
171 7 290207
5152
5430 56636 7240
Mean number of organismssample 448 Standard deviation 72
W b f 2lean num er 0 organlsms II 384653 Standard deviation 61988
H = 1 27 SD= 041 SR= 1 02 J= 038
A-40
STATION 55 Date 17 August 1984 Depth 18 m Salinity (bottom) 00 ppt Temperature (bottol) 223 C No of samples 10
Frequency Density (nom 2 ) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 291 1000 249853 118104 Turbellaria 1 100 859 2715 M~ntb~ mni~Q Oligochaeta
1 47
100 1000
859 40354
2715 28347
~~iQQ~sectkY~ll int~[m~gi bitbQQ1YSDY Yi(gn Bivalvia
25 12
6
900 500 400
21465 10303 5152
1231 0 18459 7240
~Q~2ipoundY mnil~ni Ostracoda
11 8
400 600
9445 6869
12442 6773
bmnQpoundYb~r~ SPa 52 1000 44647 19746 ~QrQsbY lmgnisectsQiielo snQ~ni~ Chironomid larvae
43 5
15
1000 400 BOO
36920 4293
12879
21436 6071 8344
Mean number of organismssample 517 Standard deviation 174
M b f I 2ean num er 0 organlsms m 443896 Standard deviation 149431
W = 228 SD= 065 SR= 1 33 J= 062
A-41
STATION 45 Date 29 August 1984 Depth 55 III
Salinity (bottom) 07 ppt Temperature (bottom) 199 C No of samples 10
Frequency Density (noI 2) Total occurrence
Taxa number (X) X SD
Nematoda 192 1000 164851 98380 ~sntbsect limnipoundQlDligochaeta
2 198
200 1000
171 7 170003
3620 67339
~Q[eipoundYls msniln~isect Ostracoda
1 4
100 400
859 3434
2715 4434
bimnQpoundytb[s Spa gQ[Qeniy sect21QOi~ sectpoundQttQlsO poundsOsggOi
164 87
2468
1000 1000 1000
140810 74698
2119025
39283 39460
840890
Mean number of organismssample 311 6 Standard deviation 101 1
ill b f 2nean nUll er 0 organIsms 2675398 Standard deviation 8682B8
W= 116 SD= 036 SR= 060 J= 039
A-42
STATION 18 Date 29 August 1984 Depth 30 bull Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samples 10
Total Frequency occurrence
Densi ty 2
(nom )
Taxa number (~ ) x S D
Nematoda 150 1000 128790 28905 Turbellaria 7 400 6010 9096 ~nh imni~Qj Oligochaeta ~~i~2Y~k~~1 ini~CIDgii bih2g~Qb~ Yi(~U2 Bivalvi a
B 145
1 1 2
600 1000
100 100 200
6869 124497
859 859
171 7
677 3 84732
271S 2715 3620
~Q[Qi~yli miDllgni bimn2pound~ih~C sp ~QtQehiY imQUia Harpacticoida
7 7
265 1
500 300
1000 100
6010 601 0
227529 859
8145 10747
139462 2715
sect~QtiQDi ~Q~Q~i~ Chironomid larvae
2471 2
1000 200
2121601 171 7
1063112 3620
Mean number of organismssample 3067 Standard deviation 121 9
2Mean number 0 f organIsms m 2633326 standard deviation 1046718
H = 1 09 SD= 034 SR= 1 04 J= 029
A-43
STATION 58 Date 29 August 1984 Depth 55 111
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (noI 2 ) Total occurrence -----------------
Taxa nUllber (X) X SD
Nemertea 4 400 3434 4434 Nuatoda 64 1000 54950 25016 Turbellaria 9 400 7727 11047 ~Hl~b limli~Q19 Oligochaeta
1 37
100 1000
859 31769
2715 19006
i~Qyh il(~~ bHtlQSlheln Yl Bivalvia
4 4
20
200 300 400
3434 3434
17172
8215 6003
26541 ~e(ijY l bQ~dlH sp
26 1
700 100
22324 859
25662 2715
~Q[QQhil iQ sectjgUell HD Heleidae larvae
418 20
1
1000 800 100
358895 17172
859
129443 12799 271 5
Mean number of organismssample 609 Standard deviation 175
nean num b er 0 f organIsms 1 111 2 522887 Standard deviation 150164
H= 176 SD= 051 SR= 1 30 J= 047
A-44
I I
I
I
STATION SS
Date 29 August 1984 Depth 21 1
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (no2) Total occurrence
Taxa nUllber (X) x S D
Nematoda ISO 1000 128790 37969 Turbellaria 1 100 859 271 5 Oligochaeta 48 1000 41213 16088 ~i~g~sect~~l iQ~~mgi bi~QQg~gb~sect ~i~nsect
10 14
600 600
eSB6 12020
9050 14137
Bivalvia 4 200 3434 7240 ~Q[Q~Yl niQaa Ostracoda
15 7
700 SOO
12879 6010
15806 7069
bmQg~~~b~ SPa 14 800 12020 8295 ~g[gaby mgni sect~g~~Qn ~ngnai Chironomid larvae
IB4 25 9
1000 900 700
157982 21465
7727
35563 16810 6335shy
Mean number of organismssample 481 Standard deviation B6
2Mean number 0 f organlsms m 412987 Standard deviation 74131
H= 24S SD= 074 SR= 1 23 J= 068
A-45
STATION 45 Date 14 September 1984 Depth 61 11
Salinity (bottom) 03 ppt Temperature (bottom) IB4 C No of samples 10
---------------------------------~----------------------------------------
Taxa TotalnUlllDer
Frequency occ~~~ence
Density (no 2) -----X-------sect7B
Nematoda 189 1000 162275 85233 t1tQ SPa
Turbellaria 2 2
200 100
171 7 171 7
3620 5430
~~~nIng limoifQl t1QQQDi~ flQriQ Oligochaeta
5 19
142
400 800
1000
4293 1631 3
121921
6071 12442 30504
~QQifYl mDl~D bimoQpoundt1hgr Spa Cumacea
19 184
2
800 1000 200
1631 3 157982
171 7
130B4 69541 3620
~Q[QnniYm ~~lmQDi Harpacticoida
118 1
1000 100
10131 5 B59
43367 2715
sectfQIIQD fOQgO Chironomid larvae
1780 1
1000 100
1528308 859
673586 2715
Mean number of organismssample 2464 Standard deviation 874
M ean num b er f 20 organlsms 2115590 Standard deviation 750305
H= 151 SD= 046 SR= 1 07 J= 041
A-46
STATION 18 Date 14 September 1984 Depth 21 III
Salinity (bottom) 01 ppt Temperature (botto) 182 C No of samples 10
Frequency DenSity (nom 2 ) Total occurrence ---------------- shy
Taxa nUlDber (i) X SD
Nemertea 1 100 859 271 5 Nematoda 186 1000 159700 44925 Turbellaria 16 400 13738 20717 ~~Dth~~ limni~Ql Oligochaeta
13 55
700 900
11162 47223
9096 30085
~Q~ei~Yl nil~Qi~ 17 900 14596 7069 bimDg~lbg[ Spa b 500 5152 6003 ~Q[Q2niY ~lgQi~ Harpacti coi da
562 2
1000 200
482533 171 7
136766 3620
sectpoundQttQ~Q~ ~n~ni 791 1000 679153 324290
Mean number of organismssample 1649 Standard deviation 447
I 211ean nUll ber 0 f organIsms I 1415831 Standard deviation 384136
H= 179 SD= 064 SR= 084 J= 054
A-47
STATION 58 Date 14 September 1984 Depth 58 III
Salinity (bottom) 01 ppt Temperature (bottom) 191 C No of sampl es 10
-------------------------------------------~------------------------------Frequency Density (nom 2 )
Total occurrence Taxa number eX) X SD
Nemertea 1 100 859 2715 Nematoda 55 1000 47223 18658 Turbellaria 10 500 8586 11448
1 100 859 2715 Oligochaeta 41 1000 35203 17850 ~~iQQ~~gll iu1g[m~i ~Q[Q~Yl nilD bimnQ~Y~h[ Spa ~Q[Q~hiYm lmgui sectpoundQilg1D poundU2D Chironomid larvae
4 10
2 277
23 4
100 500 200
1000 700 300
3434 8586 171 7
237832 19748 3434
10861 11448 3620
50561 21051 6003
Mean number of organismssample 428 Standard deviation 51
M b f 2ean num er 0 organIsms III 367481 Standard deviation 43743
H= 179 SD= 055 SR= 114 J= 052
A-48
I I
STATION SS Date 14 September 1984 Depth 21 II
Salinity (bottom) 01 ppt Temperature (bottom) 190 C No of samples 10
--------------------------------------------------------------------~-----
Frequency Density (no1I2) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 102 1000 87577 39200 Oligochaeta 34 700 29192 31142 ~iQ2Y~y1 int(mgi~ bithQgl~en~ Yi(gDsect ~Q(~i~Y m~DilgDsecti~ bimDQamp~1h(sect sp ~2(QQhiY slmQD 2poundQiiQlsD ~sD~g~nsecti Chironomid larvae
36 18 16 17
100 16
3
1000 600 800 700
1000 800 300
30910 15455 13738 14596 85860 13738 2576
157BO 20953 10078 14621 32126 10861 4147
Mean number of organismssample 342 Standard deviation 97
2Mean nUllber 0 f organlsms m 293641 Standard deviation 83617
H= 262 SD= 079 SR= 095 J= 083
A-49
Appendix B--Sediment particle size and organic content of the Cathlamet Bay
benthic invertebrate sites 13 March through 14 September
1984
iii
1
Station 18a 48 54 57
Survey 1 1 1 1
Month March March March March
Day 13 13 13 13
Particle size (mm) Phib Percent by weight
gt 40 -2 000 000 000
20- 40 -1 000 000 000
10- 20 0 000 009 000
05- 10 1 018 1079 032
025- 050 2 545 7583 2468
0125- 025 3 8731 1225 6783
00625-0125 4 491 037 657
lt0625 (5-12) 216 067 060
Organic Content 160 116 128
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
b Phi= -log2(sediment particle diameter in mm)
B-1
Station 18a 48 54 57
Survey 2 2 2 2
Month April April April April
Day 5 5 5 5
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 003 093 000
05shy 10 1 005 31 75 023
025shy 050 2 087 5904 2368
0125- 025 3 6316 750 7155
00625-0125 4 3056 026 427
lt0625 (5-12) 533 052 028
Organic Content 081 077 065
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-2
Station 45 55 58
Survey 3 3 3 3
Month April April April April
Day 18 18 18 18
Particle size (mm)
gt 40
Phi
-2
Percent by weight
000 000 000
20shy 40 -1 000 000 000
10shy 20 0 005 009 004
05shy 10 1 010 027 013
025shy 050 2 015 095 225
0125- 025 3 097 536 6111
00625-0125 4 453 2821 2205
lt0625 (5-12) 9420 6511 1442
Organic Content 31 42 14
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-3
Station 18a 45 55 58
Survey 4 4 4 4
Month May May May May
Day 4 4 4 4
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 021
05shy 10 1 000 065 063
025shy 050 2 012 370 230
0125- 025 3 091 4099 4696
00625-0125 4 322 3650 3052
lt0625 (5-12) 9575 1810 1939
Organic Content 330 180 160
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-4
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
5
May
17
000
000
005
016
217
5862
2729
1170
100
45 55 58
5 5 5
May May May
17 17 17
Percent by weight
000 000
000 000
005 008
113 031
325 274
1903 5613
2784 2401
4870 1672
240 110
000
000
000
010
020
079
397
9494
390
B-5
Station 18al 45 55 58
Survey 6 6 6 6
Month June June June June
Day 6 6 6 6
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 020
05shy 10 1 005 051 027
025shy 050 2 005 301 1 79
0125- 025 3 074 3189 5404
00625-0125 4 599 4118 2885
lt0625 (5-12) 9317 2332 1485
Organic Content 340 240 150
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-6
Station
Survey
Month
Day
Particle size Cmm) Phi
gt 40 -2
20shy 40 -1
10shy 20 a
05shy 10 1
025shy 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
7
June
18
000
000
005
029
138
3917
4143
1768
180
45
7
June
18
55 58
7 7
June June
18 18
Percent by weight
000
000
000
010
020
080
427
9464
310
000 000
000 000
000 007
011 022
057 190
957 5286
3023 2642
5957 1853
1 70 110
B-7
Station 18al 45 55 58
Survey 8 8 8 8
Month July July July July
Day 2 2 2 2
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 006 002 006
05shy 10 1 006 0l3 023
025shy 050 2 017 088 171
0125- 025 3 074 2712 5365
00625-0125 4 552 3892 3081
lt0625 (5-12) 9345 3294 l354
Organic Content 410 210 160
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-8
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
9
July
17
000
000
003
013
130
4294
4434
1127
130
45
9
July
17
Percent
000
000
000
006
012
051
046
9885
290
55
9
July
17
by weight
000
000
019
048
091
628
3616
5597
030
58
9
July
17
000
000
004
022
158
5017
3148
1650
140
B-9
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18al
10
August
1
45
10
August
1
55
10
August
1
58
10
August
1
Percent by weight
000 000
000 004
001 004
009 018
018 088
098 306
049 2510
9824 7070
000
005
045
763
3604
4495
932
156
100 190 060
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-10
Station 18 45 55 58
Survey 11 11 11 11
Month August August August August
Day 17 17 17 17
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000 000
20- 40 -1 005 000 000 000
10- 20 0 021 003 000 210
05- 10 1 064 009 000 159
025- 050 2 226 027 045 2656
0125- 025 3 3259 131 712 3719
00625-0125 4 4327 195 1737 1159
lt0625 (5-12) 2098 9635 7506 2097
Organic Content 210 300 160 100
Ii I
B-11
Station
Survey
Month
Day
Particle size (mm) Phi
gt40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
12
August
29
000
000
012
046
186
3465
4498
17 93
241
45
12
August
29
55 58
12 12
August August
29 29
Percent by weight
000
000
002
009
026
118
189
9656
540
000 000
000 000
003 011
011 028
055 1013
859 5033
1596 1827
7476 2089
1 70 120
B-12
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
_-------------------- shy
B-13
Opening
Top cap
Plexiglass disc c====tt====tt===J
PVC tubing
Bottom cap
1Scm String
Figure 2--Description of PVC benthic invertebrate sampling device
5
Station number date depth bottom salinity and temperature (taken
with a Beckman RS5-3 salinometer and probe1) sample size total numbers
frequency of occurrence and mean number 1m2 are presented in the Results
Besides the above H Shannon-Weaver diversity function (Shannon and Weaver
1963) SD Simpson diversity value (Simpson 1949) SR species richness
(Margalef 1958) and J species evenness value (Pielou 1966) were
calculated The following formulas were used s
1) H= - L Pi 10g2 Pii=1
where Pi= the proportion of individuals belonging to the ith
species
S = number of species s
2) SD= 1 - L Pi2 i=1
where Pi= the proporti on of individual s be longing to the i I th
species
3) SR= (S - l)loge N
where S= the number of species at the station
N= the total number of individuals at the station
4) J= H Ilog2 S
where H= the Shannon-Weaver diversity value
S = the number of species
Sediments were analyzed by seiving those particles lt 00625 mm were
considered the silt-clay fraction Organic content was determined by
burning at 550degC for 24 h
II Reference to trade names does not imply endorsement by National Marine Fisheries Service NOAA
6
RESULTS
Physical and biological data are presented by station in Appendix A A
list of the benthic invertebrate taxa identified during the survey are
presented in Table 1 Appendix B presents the sediment analysis
DISCUSSION
Although the purpose of this study was to obtain base line information
prior to modification of the ship navigational channel caution must be used
in interpreting the data First the MOBILOIL oil spill on 19 March 1984
may have affected the local benthic invertebrate biota Oil started to
occur in the benthic samples on the third survey (18 April 1984) and
continued until the end of the study (14 September 1984) Al though some
stations had more oil than others effects on the invertebrates were not
obvious Secondly year to year variations in benthic invertebrate species
and densities occur in the marine environment (Gray and Christie 1983)
Whether the benthic infauna in Cathlamet Bay varies cyclically is unknown
The long term stability or cycles need to be determined before changes of
the benthic infauna can be attributed to any habitat modification or
dredging proj ect
Salinity is considered to be the most important factor controlling the
distribution of estuarine animals (Kinne 1966) Since we performed our data
collections primarily at low tide the given salinity values must be
considered low values Chapman and Brinkhurst (1981) showed that seasonal
variations of benthic invertebrates in the Fraser River estuary were
correl ated with salini ty One common freshwater oligochaete species in
their study Limnodrilus hoffmeisteri also occurs in Cathlamet Bay Adult
hoffmeisteri can tolerate salinities up to 10 ppt and immatures 14 to
7
Table 1--List of invertebrate taxa found at benthic invertebrate sites
located in Cathlamet Bay Oregon March through September 1984
Coelenterata Hydra sp
Turbellaria Nemertea Nematoda Nematomorpha Oligochaeta
Vejdovskyella intermedia Limnodrilus hoffmeisteri Ilydrilus frantzi
Polychaeta Neanthes limnicola Hobsonia florida Manyunkia speciosa
Gastropoda Lithoglyphys (=Fluminicola)
Bivalvia virens
Corbicula manilensis Ostracoda
Limnocythera sp Mysidacea
Neomysis mercedis Cumacea Amphipoda
Eogammarus spp Eogammarus confervicolus Corophium salmonis Corophium spinicorne Pontoporeia hoyi Eohaustorius estuaris
Isopoda Saduria entomon
Harpacticoida Scottolana canadensis
Insecta Diptera adult Diptera pupae Heleidae larvae Chironomidae larvae Chironomidae pupae Trichoptera larvae Hymenoptera Collembola
Hydracarina
Occurrence not quantified
8
15 ppt (Chapman and Brinkhurst 1980) This species appears to be a useful
salinity indicator and future benthic work should identify and enumerate
this species Due to time and taxonomic expertise requirements only the
oligochaete species Vejdovskyella intermedia was enumerated Salinity
tolerances of this species are unknown
Since intersti tial salinities do not vary dielly as do salini ties in
the water column (Sanders et al 1965) interstitial salinities should have
been measured Al though many infauna species may be exposed to overlying
water because of activity andor tubes (exCorophium spp) many benthic
invertebrates are dependent on interstitial salinity levels Measurements
of interstitial salinities are necesssary to determine benthic infauna
sensitivity to salinity intrusion
Finally there appeared to be a large amount of within station
variability in the sediment texture particularly at Stations 55 and 58
The sediment at Station 55 ranged from a very fine sand to almost all clay
The sediment texture variability at Station 58 was a result of the uS
Coast Guard moving Can 5 to a new location forcing us to estimate the
previous location of our station
ACKNOWLEDGMENTS
We wish to thank Maurice Laird Nick Zorich Larry Davis Roy Pettit
Edward Koller and David Miller for their assistance in developing the
sampling device and collecting the samples We express special thanks to
Sandy Lipovsky Thomas Moylan and Susan Newhouse for helping sort and
identify the invertebrates
9
LITERATURE CITED
Chapman P M and R O Brinkhurst
1980 Salinity tolerance of some selected aquatic oligochaetes Internat
Rev der Gesamten Hydrobio1gie 65499-505
Chapman P M and R O Brinkhurst
1981 Seasonal changes in interstitial salinities and seasonal movements
of subtidal benthic invertebrates in the Fraser River estuary BC Est
Coast Shelf Sci 1249-66
Gray J S and H Christie
1983 Predicting long-term changes in marine benthic communities Mar
Ecol Prog Sere 1387-94
Kinne O
1966 Physiological aspects of animal life in estuaries with special
reference to salinity Neth J of Sea Res 3 227-244
Margalef R
1958 Information theory in ecology Gen Syst 336-71
McCabe G T Jr W D Muir R L Emmett and J T Durkin
1983 Interrelationships between juvenile sa1monids and nonsalmonid fish
in thl Columbia River estuary Fish Bu11U S 81(4)815-826
Pie10u E L
1966 The measurement of diversity in different types of biological
collections J Theor BioI 13131-144
Sanders H L P C Mange1sdorf and G R Hampson
1965 Salinity and faunal distribution in the Pocasset River
Massachusetts Limno Ocean 10216-229
Shannon L E and W Weaver
1963 The mathematical theory of communication Univ of Illinois Press
Urbana Ill
10
Simpson E H
1949 Measurement of diversity Nature 163688
11
APPENDIX A--Descriptive summary of benthic invertebrate data collected in
Cathlamet Bay Oregon during March through September 1984
STATION 18 Date 13 March 1984 Depth 46 m Salinity (bottom) 11 ppt Temperature (bottom) 67 C No of samples 15
Frequency Density (nom 2 ) Total occurrence
Taxa number (7) X SD
Nemertea 2 67 1145 4434 Nematoda 134 1000 76702 33169 Turbellaria 22 667 12593 15854 ~~n~b~~ imnpoundQ 31 Oligochaeta 486
933 17744 1468 1 100() 278186 138779
~QtQif~12 mnil~nsectisect 24 Ostracoda 39
933 13738 8462 800 22324 17715
~Q[QQbiYm ~lmQni~ 74 867 42358 38B70 EQntQIH~i2 Qyi 1 EQri gnQQn 1 Harpacticoida 7
67 572 2217 67 572 221 7
333 4007 7159 Insecta 2 67 1145 4434 Chironomid larvae 20 667 1144 B 10090 Collembola 95 867 54378 82588 Hydracarina 1 67 572 221 7
Mean number of organismssample 626 Standard deviation 19 1
M ean num b er 0 f 2organIsms III 537484 Standard deviation 163579
H= 237 so= 069 SR= 1 42 J= 061
A-l
STATION 48 Date 13 March 1984 Depth 107 m Salinity (bottom) 05 ppt Temperature (bottom) bB C No of sampl es 15
Frequency Densi ty (nom 2 ) Total occurrence
Taxa number (7) X SD
Nemertea 31 6b7 17744 1849 1 Nematoda 38 667 21751 22685 Oligochaeta 4 133 2290 6859 ~QQpound12 2nil~nsectisect 31 Ostracoda 1
667 17744 29648 67 572 221 7
~Q9~~[~ spp 1 ~Q[Q2l ~~lQnisect 1 ~Q2sectiQisect sectisect 4 Harpacticoida 1
67 572 2217 67 572 221 7
200 2290 5097 67 572 221 7
Insecta 2 133 1145 3021 Diptera adult 1 67 572 2217 Collembola 24 467 13738 30923
Mean number of organismssample 93 Standard deviation 59
Mean number of organismsm2 795b4 Standard deviation 50740
H= 255 SD= 079 SR= 1 55 J= 071
A-2
STATION 54 Date 14 March 1984 Depth 177 m Salinity (bottom) 00 ppt Temperature (bottom) 66 C No of samples 15
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nemertea 47 1000 26903 14096 Nematoda 7 267 4007 9102 Turbellaria 9 333 5152 1114B Oligochaeta 11 333 6296 10989 Gastropoda 1 67 572 2217 ~Q(Qi~Yl mnil~n2i~ Ostracoda
199 3
1000 200
11390B 171 7
97165 3555
gQ[Qehiy sectlmQnisect Harpacticoida
3 1
200 67
171 7 572
3555 221 7
Heleidae larvae 29 867 16600 10989 Chironomid larvae 2 133 1145 3021 Collembola 2 67 1145 4434
Mean number of organismssample 209 Standard deviation 103
2Mean number 0 f organIsms m 179734 Standard deviation 88247
H = 1 86 SD= 056 SR= 1 33 J= 052
A-3
STATION 57 Date 13 March 1984 Depth 91 m Salinity (bottom) 00 ppt Temperature (bottom) 63 C No of sampl es 15
Frequency Densi ty (no 81 2) Total occurrence
Taxa number (X) X SD
Nemertea 27 667 15455 13459 Nematoda 8 400 4579 6381 Turbellaria 4 200 2290 5097 Oligochaeta 8 400 4579 6381 ~g[gipound~l mnilui Ostracoda
1 1
67 67
572 572
2217 2217
~Qgml[a spp 1 67 572 2217 ~Q[Qeni~m lmQnisect Harpacticoida
2 1
133 67
1145 572
3021 221 7
Insecta 3 67 171 7 b651 Chironomid larvae 1 b7 572 221 7 Collembola 37 400 21179 65700 Hydracarina 1 67 572 221 7
Mean number of organismssample 63 Standard deviation 82
Mean number of organismsm2 54378 Standard deviation 70029
H= 253 SD= 075 SR= 1 83 J= 068
A-4
STATION 18 Date 5 April 1984 Depth 30 II
Salinity (bottoll) 00 ppt Temperature (bottom) 90 C No of samples 15
Frequency Densi ty (no1I 2) Total occurrence
Taxa number (i ) If S D
Nemertea 11 bOO 6296 6042 Nematomorpha 2 133 1145 3021 Nuatoda 119 1000 6811 6 50947 Turbellaria 20 600 11448 13640 ~~~nin~sect liIDni~Q12 Oligochaeta
33 481
1000 1000
18889 275324
10364 142326
~Q~Qi~Yl m2nil~ni2 23 600 13165 1371 7 Ostracoda 33 933 18889 10861 gQ(QQrriYID sect2mQnisectHarpacti coi da
38 7
933 133
21751 4007
13329 13328
Chironomid larvae 16 667 9158 8868 ColI embola 1 67 572 2217
Mean number of organismssample 523 Standard deviation 227
M b f 2ean num er 0 organIsms m 448762 Standard deviation 194508
H= 202 SD= 059 SR= 114 J= 0S6
A-5
STATION 45 Date 18 April 1984 Depth 64 III
Salinity (bottom) 00 ppt Temperature (bottom) 95 C No of samples 15
Total Frequency occurrence
Density (noI 2 )
Taxa number (X) X SD
Nematoda 171 1000 97890 92277 tyg~ sp Turbellaria
1 29
67 600
572 16600
221 7 23506
H~nng~ imDi~g tQQsectQl fg~ig Oligochaeta ~Q[Qi~Y2 m2niD~i Ostracodamiddot
9 41
367 42
100
400 1000 1000 800
1000
5152 23469
210071 24041 57240
781 5 13563
100542 19254 43134
~Q[Qeniym amQnisectHarpacticoida Heleidae larvae
37 2049
1
933 1000
67
21179 117284B
572
189B5 616612
221 7 Chironomid larvae 3 200 171 7 3555 Collembola 1 67 572 221 7 Insect parts 1 67 572 221 7
Mean number of organismssample 1901 Standard deviation 864
b f 2nean num er 0 organIsms m 1632485 Standard deviation 741931
H = 1 52 SD= 046 SR= 1 13 J= 040
A-6
STATION 18 Date 18 April 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom) No of samples 15
Frequency Density (nom2) Total occurrence
Taxa nueber (X) x s D
Nemertea 13 533 7441 9663 Nematomorpha 3 200 171 7 3555 Nematoda 195 1000 111618 63675 Turbell ari a 9 467 5152 6326 ~~ni~~ i~ni~Ql~ 30 867 17172 129B1 Oligochaeta 580 1000 331992 108880 ~QC~i~Ml~ m~nil~n~isectOstracoda
28 18
1000 667
16027 10303
11179 10364
~Q[Q~~iYm sect~Qni2 sect~ci~ gniQQnHarpacticoida
105 1
17
1000 67
400
60102 572
9731
25553 2217
19970 Chironollid larvae 16 667 9158 8B6B
Hean number of organismssample 677 Standard deviation 199
M ean num b I 2er 0 f organIsms AI 580986 Standard deviation 171095
w = 202 SD= 062 SR= 1 10 J= 056
95 C
A-7
STATION 58 Date 18 April 1984 Depth 67 m Salinity (bottom) 00 ppt Temperature (botto) No of samples 15
Frequency Density (nom2) Total occurrence
Taxa number (~) X SD
Nemertea 62 933 35489 26338 Nematoda 224 1000 128218 49903 Turbellaria 9 600 5152 4354 ~nt~sect imni~Q Oligochaeta
1 79
67 1000
572 45220
2217 23506
bnQgYRhY~ Yi~~nE ~Q(~i~Y nil~ni Ostracoda
2 10 19
67 533 600
1145 5724
10876
4434 6214
10989 ~Q[QeniY sectQOiHarpacticoida
30 2
B67 133
17172 1145
12142 3021
Heleidae larvae 6 333 3434 5430 Chironomid larvae 9 400 5152 7B1 5 Chironomid pupae 2 133 1145 3021
Mean number of organismssample 303 Standard deviation 94
I 11 ean num ber 0 f organlsms 2 260442 Standard deviation 81043
H= 233 SO= 070 SR= 1 36 J= 063
97 C
A-B
Frequency Density (nolm 2) Total occurrence -----------------
Taxa number (7) X SD
Nemertea 16 467 9158 10989 Nematoda 266 1000 152258 54541 Turbellaria 23 600 13165 15518 ~l~nH ~Q~iQH 2 133 1145 3021 Oligochaeta 181 1000 103604 56532 bi~hQg~Qn~~ ~it~l~ ~QtQifg mli~lsectisectOstracoda
3 59 15
200 1000 733
1717 33772 8586
3555 23054
7256 ~Q[QQhiY HmQtlsect ~Q[QehiYm sect21tlfQ[lg EQlQQQt~i hQ~i
466 3 1
1000 200 67
266738 171 7 572
75094 3555 221 7
Harpacticoida 30 400 17172 40402 Chironomid larvae 10 533 5724 6214
Mean number of organismssa_pIe 717 Standard deviation 143
I 2Mean number 0 f organlsms m 615330 Standard deviation 122532
H= 226 SO= 072 SR= 119 J= 061
STATION 55 Date 18 April 1984 Depth 30 1ft
Salinity (bottom) 00 ppt Temperature (bottom) 93 C No of SaIIples 15
A-9
STATION 45 Date 4 Hay 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 103 C No of samples 10
Frequency Density (noI2) Total occurrence ---------------- shy
Taxa number (Xl X SD
Neutoda 269 1000 230963 167296 Turbellaria 1 100 859 2715 ~u~yuti Q~iQ ~Ub imni~Q
1 2
100 100
859 171 7
2715 5430
j2~Qn flec Oligochaeta
28 169
BOO 1000
24041 145103
19326 74351
~igeYk~ll iulCIDai ~Q(Qi~Y uini Ostracoda
32 4 5
aoo 400
400
27475 3434 4293
22463 4434 6071
biQQ~~tbt sp ~e(QQbYm mQoi sectampQeD ~nQDisect Chironomid larvae
25 2
578 2
900 200
1000 200
21465 1717
496271 171 7
15279 3620
293820 3620
Mean number of organismssample 111 8 Standard deviation 522
11 b f I 2ean num er 0 organIsms m 95991 5 Standard deviation 447842
H= 193 SD= 065 SR= 118 J= 052
A-10
STATION 18 Date 4 Hay 1984 Depth 34 II
Salinity (bottom) 00 ppt Temperature (bottom) 104 C No of saMples 10
Frequency Density (noI 2 ) occurrence ----------------shy
Taxa (X) X SD
Nemertea 10 600 8SB6 10709 Nuatoda 153 1000 131366 47899 Turbellaria 8 600 6869 6773 ~n1b limnpoundQl Oligochaeta
11 147
700 1000
middot9445 126214
9449 6231 7
~i~g~kXl in1(m~i ~g(2iY OiOi Ostracoda
86 4 1
900 300 100
73840 3434 859
61543 6003 2715
bimoQpoundx1b( sp ~2(QQbiYm mgoiDi ptera adult
3 57
3
300 900 300
2576 48940
2576
4147 21815 4147
Chironomid larvae 4 300 3434 6003 Chironomid pupae 1 100 859 2715
Hean nUMber of orQanismssample 489 Standard deviation 160
b f 2nean nUll er 0 organIsms II 418997 Standard deviation 137721
H= 243 SD= 076 SR= 1 34 J= 066
A-l1
STATION 5B Date 4 Hay 1984 Depth 61 bull Salinity (botto~) 00 ppt Temperature (bottom) 110 C No of suples 10
Frequency Density (nom 2) Total occurrence ---------------- shy
Taxa number (X) X SD
Neertn 41 1000 35203 21206 Nematoda 211 1000 181165 53305 Turbellaria 4 200 3434 7240 Oligochaeta 89 1000 76415 32240 ~i~2~~~11~ iU1(~i~bi1begygny YitQ ~e(biYl ~OiDi OstracDda
4 3
20 1
400 200 BOO 100
3434 2576
17172 859
4434 5795
19829 2715
biue~1bt~ sp ~2(egniY Imeoi sectg11g1O OdD Helei dae larvae
5 32
1 1
400 900 100 100
4293 27475
859 859
6071 18010 2715 2715
Chironomid larvae 7 400 6010 9096
Mean number of organismssample 419 Standard deviation 93
b f 2ean nUll er 0 organIsms m 359753 Standard deviation 79875
H= 221 SD= 068 SR= 138 J= 060
A-12
Frequency Density (nolm 2) occurrence -----------------
Taxa (X) X SD
Nemertea 23 900 1974S 15171 Neutollorpha 1 100 859 271 5 Nellatoda 269 1000 230963 69923 Turbellaria 10 600 8586 991 4 ~~xYnki Q~ampiQ 4 300 3434 6003 ~nb limnipoundQl Oligochaeta
1 79
100 1000
859 67829
2715 40363
~i~Q~kXl io[~i biDe9XQDX ~i[~OBi valvi a
11 3 1
800 300 100
9445 2576 859
6335 4147 271 5
~Q[~poundY mnil~n bimoQampXD[ sp ~Q[QabiY lQO Harpacticoida
18 2
159 1
700 200
1000 100
15455 171 7
135659 859
13904 3620
54272 2715
Chironomid larvae 2 200 171 7 3620 Trichoptera larvae 1 100 859 2715
STATION 55 Date 4 May 1984 Depth 21 m Salinity (bottom) 00 ppt Temperature (bottom) 107 C No of suples 10
Mean number of organismssamples 594 Standard deviation 147
Mean number of organismsm2 501422 Standard deviation 126525
H= 219 aD= 069 SR= 1 63 J= 055
A-13
STATION 45 Date 17 May 1984 Depth 61 m Sal i ni ty (bottom) 01 ppt Temperature (bottom) 121 C No of sampl es 10
Frequency Total occurrence
Taxa nUlllber (7)
NelDertea 1 100 859 2715 Nematoda 163 1000 139952 127996 Polychaeta 1 100 859 2715 ~~~n~h~ imni~Qs Hobsonia florida
2 6
200 600
171 7 5152
3620 4434
Oligochaeta 329 1000 282479 13291 8 ~~lQQYsectk~~12 in~~rmQi 57 900 48940 33142 ~Qr~ipound~2 ffi2niDi 6 500 5152 6003 Ostracoda 5 200 4293 10898 bimDg~yth( SPa 13 600 11162 12176 ~Q(Qebi~m sectQDisect Harpacticaida
2 2
200 100
1717 1717
3620 5430
2poundQttQD poundDQDsectisectDiptera adult
296 1
1000 100
254146 859
172633 271 5
Mean number of organismssample 884 Standard deviation 326
b f I 2nean num er 0 organlss m 759002 Standard deviation 280131
H= 209 SD= 071 SR= 1 33 J= 055
A-14
STATION 18 Date 17 May 1984 Depth 30 m Salinity (bottom) 00 ppt Temperature (bottom) 122 C No of samples 12
Frequency Density (nom2) Total occurrence -----------------
Taxa number (X) X SD
Nematoda 50 833 35775 22815 ~ntb limnipoundQl 3 Oligochaeta 97
250 833
2147 69404
3883 48495
~igQ~~k~ intr~ 27 ~QrQipoundY mnin~i~ 5
667 333
19319 3S7S
19068 5740
Ostracoda 1 83 716 2479 bimnQpound~nr sp 5 ~Q(Q~bY ~mQni S4 ~Q(Q~niY ~QinipoundQ(n 3
333 833 250
3578 60102
2147
5740 43780 3883
fgnQ2Q(i bQ~i 1 sectpoundQtgO poundnQn~i 2 Chironomid larvae 4
83 167 250
716 1431 2862
2479 3342 5592
Mean number of organismssample 235 Standard deviation 116
nean nURl b er 0 f organlslls II 2 201771 Standard devi ati on 99221
H= 236 SD= 075 SR= 1 35 J= 066
A-15
STATION 58 Date 17 May 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) 123 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nemertea 2 100 171 7 5430 Nematoda 75 1000 64395 34404 ~~2Qih~a limQi~Q 2 200 171 7 3620 Oligochaeta 60 1000 51516 33376 ~~igQY~~~12 iQ~[~~gi 2 200 171 7 3620 bitQQ9~Bh~sect Yr~Qsect 3 200 2576 579~
gQ[Qi~Yl ID2Dil~nsectisect Ostracoda
6 6
500 400
5152 5152
6003 8295
binQ~~nr[ sp gg[QQOYm mQQsect sect~QttQn 5n2Q~nsectia Chironomid larvae
2 34
1 1
200 1000
100 100
171 7 29192
859 859
3620 12927 271 5 2715
Mean number of organismssample 194 Standard deviation
2Mean nurn ber 0 f organIsms fA 166568 Standard deviation 56259
H= 225 SD= 072 SR= 1 45 J= 063
A-16
66
STATION 55 Date 17 May 1984 Depth 24 II
Salinity (bottom) 00 ppt Telllperature (bottom) 126 C No of samples 10
Total Frequency occurrence
Taxa nUllber (X) X SD --------------------------------------------------------------~-----------
Nematollorpha 2 200 171 7 3620 Nematoda 63 1000 54092 35297 Oligochaeta 94 1000 80708 44004 ~~iQQY~k~~l iQt~(m~Qi bitnQg~Qh~~ Yi[~Q gQ[QipoundY~ mni~Q~i Ostracoda
10 9 4 2
600 800 300 100
8586 7727 3434 171 7
9050 4874 6003 5430
bimnQ~~ln~[e sp ~Q(QQbiYm mQD ~Q[QQbiYm 2inipoundQ[n~ Chironomid larvae
6 142
3 1
600 1000 200 100
5152 121921
2576 859
4434 50682 5795 2715
Mean number of organismssample 336 Standard deviation 62
2Mean num ber 0 f organisms m 288490 Standard deviation 53421
H= 214 SD= 071 SR= 119 J= 062
A-17
STATION 45 Date 1 June 1984 Depth 61 m Salinity (bottom) 01 ppt Temperature (bottom) 139 C No of samples 10
Total Frequency occurrence
Density (no2)
Taxa nUllber (1) X SD
Nematoda 174 900 149396 132347 Turbellaria 5 200 4293 10898 ~~~QiQ~sect tmQtpoundQ~ ~QQsectQ flQi~sect Oligochaeta ~~iQQysecttygl~ iQl~rm~~i2 ~Q[Qi~~l~ ~~DilgDsectisect Ostracoda
5 20
190 103
12 5
400 900
1000 900
60 (I 400
4293 17172
163134 88436 10303 4293
6071 8095
92563 51524 11304 6071
bimnQpoundytng[ sp ~gQmYsectisect IDg[pound~Qisect ~Q[QQhi~m sectlmQDisect sectpoundQtiQlsectQ pound~Qgsectisect ChironQmid larvae
33 1
10 375
2
900 100 700
1000 200
28334 859
8586 321975
171 7
17196 2715 7010
179201 3620
Mean number of organismssample 935 Standard deviation 254
nurn b 0 f 2lean er organlsms m 802791 Standard deviation 218423
H= 239 SD= 075 SR= 1 22 J= 065
A-18
STATION 18 Date 1 June 1984 Depth 30 AI
Salinity (bottom) 00 ppt Temperature (bottom) 134 C No of samples 11
Frequency Density (no 1m2)
Taxa Total number
occurrence (X)
---------------- shyX SD
Turbellaria 14 636 10928 1157 7 ~~~Qltlg~ ilipoundQ~ Oligochaeta
10 178
727 1000
7805 138937
601 6 67913
~~iQQy~tY~l~ ill~[m~Qi~ 122 636 95227 93619 ~Q[Qipound~ l~i~lsectisect Ostracoda
7 1
455 9 1
5464 78 1
6946 2589
billQylhg[ Spa 16 818 12489 10420 GQ[QQQil HQi~ 139 1000 108496 70934 gQ[Qebi secteiifQ[~ sectQiiQi2 ~Q~sectisect Diptera pupae
1 2 1
9 1 182
11 1
781 1561 781
2589 3473 2589
Chironomid larvae 2 182 1561 3473
Mean number of organismssample 714 Standard deviation 284
nean num b er 0 f organlsms m 2 612728 Standard deviation 244249
H= 232 SD= 075 SR= 1 25 J= 063
A-19
STATION 58 Date 1 June 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 138 C No of samples 10
Frequency Density (noI 2 ) Total occurrence
Taxa number (X) X SD
Nematoda 173 1000 148538 47383 Turbellaria 3 300 2576 4147 Oligochaeta 53 1000 45506 32139 ~giQgY2k~g~ ini~[m~Qi~ bQg91YehY2 Yi[~nsect ~Qr~i~Yl m~nl~n~i
26 1
10
600 100 500
22324 859
8586
3391 2 2715
13424 bimnQpound~Q~[ sp ~Q9~m[Y poundgnitYpoundQlysect ~QtQehiYm ~lQni
4 1
46
200 100
1000
3434 859
39496
8295 2715
22243 Chironomid larvae 1 100 859 271 5
Mean number of organismssample 318 standard deviation 103
M b f I 2ean num er 0 organlsms III 273035 Standard deviation 88842
H = 1 99 SD= 065 SR= 1 08 J= 060
A-20
STATION 55 Date 1 June 1984 Depth 27 m Salinity (bottom) 00 ppt Temp era t u r e (b 0 t tom) 140 C No of samples 10
Frequency Density (nom 2 ) Total occurrence
Taxa nueber (X) X SD
Nematoda 157 1000 134800 69524 Turbellaria 9 400 7727 13696 tlHl~lk ~2~~iQH 1 100 859 2715 Oligochaeta 49 1000 42071 32745 ~~iQQysect~gl~ S[l9sect bHbQghQb~~ Yirl~
10 1
400 100
8586 859
12799 2715
tQ[Qpoundls l2lilUsect bilQHSbg[ sp ~QrQQbil nllQisectHarpacticoida
4 7
134 1
400 500
1000 100
3434 6010
115052 859
4434 7069
44742 271 5
sectpoundQUQlls poundsQgn~sect Chironomid larvae
1 1
100 100
859 859
271 5 2715
Hydracarina 1 100 859 2715
Hean number of organismssample 376 Standard deviation 132
M b f 2ean num er 0 organIsms m 322834 Standard deviation 113127
H= 202 SD= 068 SR= 1 40 J= 055
A-21
STATION 45 Date 18 June 1984 Depth 67 m Salinity (bottom) 01 ppt Temperature (bottom) 149 C No of samples 10
Frequency Density (nom2)
Taxa Total nUllber
occurrence ex) i SD
Nematoda 109 1000 93587 3891 7 Turbell ari a 3 200 2576 5795 ~g~tbg limoipoundQl Q~Qni2 fQ(i~2 Oligochaeta ~gigQ~~Y inl[ggi ~Q[QiSY2 moilo Ostracoda
3 2
194 44
7 3
200 200
1000 1000 200 200
2576 171 7
16656B 37778 6010 2576
5795 3620
118364 36020 12831 5795
bimoQampl~n~[2 sp ~Q[QQbiYm lmgoi Harpacticoida sectpoundQQ1202 pound2022Osect Chironomid larvae
68 1 1
113 2
900 100 100
1000 200
58385 859 859
97022 171 7
97627 2715 2715
73976 3620
Mean number of organismssa_pie 550 Standard deviation 371
Mean nUll ber 0 f organIsms 2II 472230 Standard deviation 318519
H= 242 SD= 077 SR= 1 32 Ja 065
A-22
STATION 18 Date 18 June 1984 Depth 34 m Salinity (bottom) 00 ppt Temperature (bottom) 155 C No of samples 10
Frequency Density (nom 2) Total occurrence ----------------shy
Taxa nUlber (Z) X SD
Neutoda 291 1000 249853 138826 Turbellaria 1 100 859 2715 ~~n~~nki~ sectQ~~iQ~2 ~g~ntbg2 limni~Q9 Oligochaeta
1 3
123
100 300
1000
859 2576
105608
271 5 4147
48240 ~~igQY~~~~9 int~(mgii ~Q[~i~~~ mini~ni bimnQ~ylbg(~ Spa
67 6 5
1000 500 400
57526 5152 4293
40485 6003 6071
~Q(QebiYm ~imQnisect Harpacticoida
80 2
1000 200
68688 171 7
41276 3620
sect~QttQini ~2nig~n~i Chironomid larvae
2 4
200 300
171 7 3434
3620 6003
Mean number of organismssample 585 Standard deviation 194
I 2Mean urn b er 0 f organIsms m 502281 Standard deviation 166943
H= 203 SD= 068 SR= 1 20 J= 057
A-23
STATI ON 58 Date 18 June 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (noI 2) Total occurrence
TaKa number (X) X SD
Nellertea 2 100 1717 5430 Nematoda 160 1000 137376 6361 1 Turbellaria 4 400 3434 4434 Oligochaeta 36 1000 3091 0 14705 ~iQQYik~ Q1rQ 4 300 3434 6003 bitnQgl~ebysect YrDsect ~Q[QiY~ ~~nni biQQpoundY1h[ sp ~Q[Qeng ~ilQD Chironomid larvae
3 1 3
61 1
300 100 300
1000 100
2576 859
2576 52375
859
4147 2715 4147
1428 1 2715
Chironollid pupae 1 100 859 271 5
Mean number of organismssample 276 standard deviation 72
nean nurn b er 0 f organIsms I 2 236974 Standard deviation 61410
H = 1 78 SD= 060 SR= 1 23 J= 051
A-24
STATION 55 Date 18 June 1984 Depth 18 m Salinity (bottom)1 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (no 1m2) occurrence
Taxa (X) X SD
Nematoda 160 1000 137376 43967 Turbellaria 1 100 859 271 5 Oligochaeta 61 1000 52375 31985 ~~iQQY~kY~~ int~[mQi~ ~Q[Qipound~l~ m~nini~ biIDnQ~Ylb[s sp
3 3 3
300 300 300
2576 2576 2576
4147 4147 4147
~Q[Q~bi~ ~slIDQni~ Chironomid larvae
85 6
1000 600
72981 5152
34165 4434
Mean number of organismssample 322 Standard deviation 75
2Mean number 0 f organIsms m 276469 Standard deviation 64099
H= 178 5D= 065 SR= 0B4 J= 059
A-25
Frequency Density (no2) occurrence -----------------
Taxa (7) X SD
Nematoda 104 1000 89294 47409 Turbell ar i a 1 100 859 2715 ~~~nQ~sect imni~Q~ tjQQsectQlis flQig~ Oligochaeta
2 1
297
100 100
1000
171 7 859
255004
5430 271 5
146273 ~~i~QYsect~Y~lls ilr2is gQrQi~y~ IDDilDia
24 4
600 300
20606 3434
27212 6003
Ostracoda 2 200 171 7 3620 biDQSy~b~C~ sp M~QYsectisect m~r~~Qi ~QrQeniy QD Harpacticoida
157 1 1 1
900 100 100 100
134800 859 859 859
73197 2715 2715 2715
sectpoundQttQDs SsDQD 113 900 97022 61656
STATION 45 Date 2 July 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) No of samples 10
172 C
Mean number of organismssample 708 Standard deviation 339
M ean num b er f 20 organisms 607889 Standard deviation 290B22
H= 216 SD= 073 SR= 1 27 J= 058
1-26
STATION 18 Date 2 July 1984 Depth 24 WI
Sal inity (bottom) 00 ppt Temperature (bottom) 172 C No of samples 10
--------------------------------~-----------------------------------------Frequency Density (nom2)
Total occurrence Taxa number (7) X SD
Nematoda 202 1000 173437 113532 ~~~nih~sect mnpoundQ~ Oligochleta
4 102
400 1000
3434 87577
4434 54873
~~igQYsect~Y~12 inl~rmgi2 ~Q[~poundYl~ m~ni~nsectisect bimnQpoundylh~[~ Spa
115 4
15
900 300 900
98739 3434
12879
100720 6003 9274
~Q[QQniY~ sect~QDi~ 55 900 47223 40525 Harpacticoida 1 100 859 2715 sectpoundQiiQlD SDg~DEisect Chironomid larvae
2 6
200 400
1717 5152
3620 7240
Hymenoptera 1 100 859 2715 Hydracarina 1 100 859 2715
Mean number of organismssample 508 Standard deviation 253
2Mean num ber 0 f organIsms m 436169 Standard deviation 217580
H= 225 SD= 074 SR= 1 22 J= 063
A-27
STATION 58 Date 2 July 1984 Depth 58 1
Salinity (bottom) 00 ppt Temperature (bottom) IBO C No of samples 10
Frequency Density (no2) Total occurrence
Taxa number ltX) i SD
Nematoda 151 1000 129649 42729 Turbellaria 1 100 859 2715 01 i gochaeta 41 1000 35203 22698 ~~i~e~~~ int~~m~~ 3 200 2576 5795 btbQglYRhY~ Yir~n~ ~e~~ampy mni~niii bimQeamp~tb~ sp ~e~eQhiY ~mQni Chironomid larvae
1 4 2
68 1
100 300 200
1000 100
859 3434 171 7
58385 859
271 5 6003 3620
1557 1 2715
Mean number of organisassample 272 Standard deviation
I 2Mean num ber 0 f organIsms I 233539 Standard deviation 62546
H = 1 69 SD= 061 SR= 099 J= 053
A-28
73
STATION 55 Date 2 July 1984 Depth 15 III
Salinity (bottom) 00 ppt Temperature (bottom) 182 C No of samples 10
Frequency Density (nom2) occurrence
Taxa (X) X SD
Nematoda 184 1()00 157982 5264B Turbellaria 1 100 859 271 5 Oligochaeta ~~iQQ~sect~Y~ll~ n~[~~Qi~ bitnggYQDYsect Yi[~nsect ~QrQipoundM2 m2ni~nsectisect bimnQpoundYn~[2 sp ~QrQQhiM Qni Harpacticoida
91 2 1 B 2
96 2
1000 200 100 500 200
1000 200
78133 171 7 859
6869 171 7
82426 1111
26058 3620 271 5 1890 3620shy
25980 3620
ChirDnomid larvae 5 400 4293 6071 Chironolllid pupae 1 100 859 2715
Mean number of organismssample 393 Standard deviation 53
2t1ean nUllber Df organlsms III 337430 Standard deviatiDn 45080
H= 187 SD= 067 SR= 116 J= 054
A-29
STATION 45 Date 17 Jul y 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (X) X SD
Nematoda 215 1000 184599 45837 ~~n~b~~ imDipoundQ Qe~Qni fllHi2
3 1
300 100
2576 859
4147 2715
Oligochaeta 305 1000 261873 147955 ~~iQQY~k~ in~rm~2i ~Qr~ipoundYl IDniln~i~ Ostracoda
17 1 2
500 100 200
14590 859
171 7
22554 2715 3620
bmnQpound~ihr sp ~QCQQhiY ~lQD~
176 1
1000 100
151114 859
57125 2715
Harpacticoida 4 300 3434 6003 sectQ~~Qn poundnQnai~ Chironomid larvae
91 5
1000 400
78133 4293
61310 6071
Mean number of organismssample 821 Standard deviation 275
M b f 2ean num er 0 organlsms m 70491 1 Standard deviation 236369
H= 215 SD= 073 SR= 114 J= 060
A-30
STATION 18 Date 17 Jul y 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom 203 C No of samples 10
Frequency Density (001 2 Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 339 1000 291065 119140 Turbellaria 3 200 2576 5795 ~~2~b~~ limnipoundQ12Oligochaeta
4 18S
300 1000
3434 161417
6003 89393
~~iQQy~~~ls in~(ID~Qi bim~Qampy~bg(2 Spa
34 16
800 700
29192 1373B
22967 15252
~g(gebi~m ~21mQni2 Harpacticoida
52 3
1000 200
44647 2576
25212 5795
2ampQ11Q1202 ampS02Qg~2i2 Chironomid larvae
18 10
700 700
15455 8586
13904 701 0
Mean number of organi$mssample 667 Standard deviation IBB
H ean nurn b er 1 20 f organIsms m 572686 Standard deviation 161750
H = 1 99 SD= 065 SR= 090 J= 060
A-31
STATION 58 Date 17 July 1984 Depth 55 AI
Salinity (bottom) 00 ppt Temperature (bottom) 197 C No of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nellatoda 173 1000 14853B 66390 Turbellaria 1 100 859 271 5 ~~~n~hu ini~QA Oligochaeta
1 46
100 1000
859 39496
2715 26293
~gipoundQy~~ygl2 in~rJg~i~ b1nQglYRnY~ Yi( Bivalvia
6 2 1
400 200 100
5152 1717 859
8295 3620 271 5
ei~ IDnH~n~i~ 2 200 171 7 3620 Ostracoda 1 100 959 271 5 biIDQHlh~( Spa ~Q(QRbim ~21Qnisect Diptera pupae
1 94
1
100 1000 100
859 80708
859
2715 35332 2715
Heleidae 1arvae 5 500 4293 4525 Chironomid larvae 1 100 859 2715
Mean number of organismssample 335 Standard deviatiDn 113
Mean number of organismsRI2 287631 Standard deviation 97413
H= 1 86 SO= 064 SR= 155 J= 049
A-32
STATION 55 Date 17 July 1984 Depth 18 m Sali nity (bottom) 00 ppt TeAlperature (bottom) 199 C No of samples 10
Frequency Density (nom2 ) occurrence
Taxa (X) x S D
Nematoda 61 1000 52375 33972 Turbellaria 1 100 859 2715 Oligochaeta 24 900 20606 11590 ~~i2QY~k~~1 iOi[2 bimDQ~xlb~r sp ~Q[QQhi~ sectgni~ Chironomid larvae
3 1
38 3
200 100
1000 300
2576 859
32627 2576
5795 2715
19326 4147
Mean number of organismssample 131 standard deviation 54
M b f 2ean num er 0 organIsms 112477 Standard deviation 46757
H= 184 SD= 066 SR= 085 J= 065
bull
A-33
STATION 45 Date 1 August 1984 Depth 58 m Sal i nity (bottoll) 03 ppt Temperature (bottom) 203 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa nUllber (X) X SD
Nematoda 145 1000 124417 52344 Turbellaria 1 100 859 2715 Mmth~sect iHpoundQ~ Q~~Qi ilQ[i9Oligochaeta
5 3
196
500 300
1000
4293 2576
168286
4525 4147
91064 ~igQYsect~~li int9i Ostracoda
2 3
100 300
171 7 2576
5430 4147
bimnQpoundtl sp ~Q[Q2hiY sectlQni~
240 6
1000 600
206064 5152
73526 4434
sectpoundQtQl poundngnai~Helei dae larvae
1862 1
1000 100
1598713 859
966134 271 ~
Mean number of organismssample 2464 Standard deviation 1156
211 ean num ber 0 f organIsms II 2115590 Standard deviation 992518
H= 124 SD= 041 SR= 089 J= 036
A-34
STATION 1S Date 1 August 1984 Depth 24 II
Salinity (bottom) 00 ppt Temperature (bottom) 198 C No of samp I es 10
Frequency Density (nom2) occurrence ---------------- shy
Taxa (X) X S D
Nuertea 1 100 859 2715 Nellatolllorpha 1 100 859 2715 Nematoda 248 1000 212933 108288 Turbellaria 4 400 3434 4434 ~untb~la Hli~g Oligochaeta
4 206
400 1000
3434 176872
4434 75309
~~igQYli~dli i[t~(gi~ ~QtQpound l binQ~ybt2 sp ~2l~bi Q[i ~2tlgtQ(ila tirisect sectpoundQtel poundl9lla Chironomid larvae
10 1
20 205
1 574
9
500 100 800
1000 100
1000 400
8586 859
17172 176013
859 492836
7727
10709 271 5
14021 48104
271 5 150531
13696
Mean number of organismssample 1284 Standard deviation 290
M b f I 2ean nurn er 0 organIsms III 1102442 Standard deviation 2488B5
H= 211 SD= 071 SR= 1 16 J= 057
A-35
STATION 58 Date 1 August 1984 Depth 55 m Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samp 1es 10
Frequency Densi ty _ ltnom2 ) Total occurrence
Taxa number (7) X SD
Nemertea 1 100 859 2715 Nematoda 22 900 18889 15036 Turbellaria 1 100 859 2715 Oligochaeta 19 700 16313 17385 biiQQgl~QhY~ YiCg~~ 2 200 171 7 3620 ~Q[~i~~l~ m2nil~n2i2 ~Q[QehiYm ~lmQni2
4 164
300 1000
3434 140810
6003 103048
Heleidae larvae 8 500 6869 8868
Mean number of organismssample 221 Standard deviation 111
I 2Mean num ber 0 f organIsms m 189751 Standard deviation 95391
H = L 37 SD= 043 SR= 090 J= 046
A-36
STATION 55 Date 1 August 1984 Depth 15 m Salinity (bottoll) 01 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (i ) X SD
Nemertea 1 100 859 2715 Neutoda 122 1000 104749 7394B Turbellaria 4 300 3434 6003 ~~~~~nt~ secte~poundQa~ Oligochaeta
1 118
100 1000
859 101315
2715 61223
~giQgY~k~~l iot~[m~Qi btbQg~2b~ Y[O ~grQipound~ ~nl~ni b~ngpound~tb~[ Spa
3 1 5 1
200 100 500 100
2576 859
4293 859
5795 2715 4525 2715
~Q[QebiYm ~mQoi sect~QttQ~ ~OQOi Heleidae larvae
42 2 2
800 200 100
36061 171 7 171 7
21341 3620 5430
Chironomid larvae 4 400 3434 4434
Mean number of organismssapIe 306 Standard deviation 169
M b f I 2ean nurn er 0 organIsms m 262732 Standard deviation 145101
H = 198 SD= 067 SR= 1 45 J= 054
A-37
~-- --------------~~-------------
STATION 45 Date 17 August 1984 Depth 61 1
Salinity (bottom) 10 ppt Temperature (bottom) 210 C No of samp 1es 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nematoda 240 1000 206064 130213 ~~h~sect limQ tjQ~~Hi~ fQ[i~~ Oligochaeta
31 2
245
400 100
1000
26617 1717
210357
75228 5430
121374 babgglYQbl~ Yi[~sect 1 100 859 2715 Ostracoda 1 100 859 271 5 biQ~xtb~[ Spa ~~Q~~isect ~[pound~Qisect ~Qgebi HQOi
333 2
143
1000 200
1000
28591 4 171 7
1227BO
106553 3620
106860 sectpoundQUg~ poundg~nsectisect 1738 1000 1492247 68441 7
Mean number of organismssample 2736 Standard deviation 944
M b f I 2ean num er 0 organlslls m 2349130 Standard deviation 810600
H= 172 SD= 056 SR= 079 J= 052
A-38
STATION 18 Date 17 August 1984 Depth 27 III
Sal i ni ty (botto) 01 ppt Temperature (bottom) 214 C No of samples 10
Frequency Density (nom 2 ) occurrence
Taxa (X) X SD
Nematoda 186 1000 159700 62468 ~tgt SPa 2 100 171 7 5430 Turbellaria 8 400 6869 8868 ~~ntbg2 imnipoundQ 12 700 10303 11304 Oligochaeta 283 1000 242984 90509 ~~iQQY~~Y~lls inlgtmggisBivalvia
4 1
400 100
3434 859
4434 271 5
~Qt~i~Y nilnsectisectbimnQpoundttbg[s SPa ~QtQQbi~ islmQDi2
1 17
286
100 900
1000
859 14596
245560
271 5 10747 83461
sectpoundetteln poundDsggnsectisect Chironomid larvae
526 4
1000 3Q0
451624 3434
179610 6003
Mean number of organismssapIe 1330 Standard deviation 162
Mean nurn ber I 20 f organIsms m 1141938 Standard deviation 139389
H= 214 SD= 073 SR= 1 06 J= 060
A-39
STATION 58 Date 17 August 1984 Depth 55 II
Salinity (bottom) 01 ppt Temperature (bottom) 220 C ND of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (7) x S D
Nematoda 68 1000 58385 27689 Turbellar i a 4 200 3434 8295 Oligochaeta 19 800 16313 13084 ~~i~Q~k~~l~ in~~[m~i bitUQ9Y2bYa Yi[~na Bivalvia
3 3 4
300 300 300
2576 2576 3434
4147 4147 6003
gQ[QipoundYl~ mnilDa 1 100 859 2715 binQpoundY~[ sp gQ[Q2UY a~mgnia sect~Qtgl~n ~n~~ni
2 338
6
100 1000 400
171 7 290207
5152
5430 56636 7240
Mean number of organismssample 448 Standard deviation 72
W b f 2lean num er 0 organlsms II 384653 Standard deviation 61988
H = 1 27 SD= 041 SR= 1 02 J= 038
A-40
STATION 55 Date 17 August 1984 Depth 18 m Salinity (bottom) 00 ppt Temperature (bottol) 223 C No of samples 10
Frequency Density (nom 2 ) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 291 1000 249853 118104 Turbellaria 1 100 859 2715 M~ntb~ mni~Q Oligochaeta
1 47
100 1000
859 40354
2715 28347
~~iQQ~sectkY~ll int~[m~gi bitbQQ1YSDY Yi(gn Bivalvia
25 12
6
900 500 400
21465 10303 5152
1231 0 18459 7240
~Q~2ipoundY mnil~ni Ostracoda
11 8
400 600
9445 6869
12442 6773
bmnQpoundYb~r~ SPa 52 1000 44647 19746 ~QrQsbY lmgnisectsQiielo snQ~ni~ Chironomid larvae
43 5
15
1000 400 BOO
36920 4293
12879
21436 6071 8344
Mean number of organismssample 517 Standard deviation 174
M b f I 2ean num er 0 organlsms m 443896 Standard deviation 149431
W = 228 SD= 065 SR= 1 33 J= 062
A-41
STATION 45 Date 29 August 1984 Depth 55 III
Salinity (bottom) 07 ppt Temperature (bottom) 199 C No of samples 10
Frequency Density (noI 2) Total occurrence
Taxa number (X) X SD
Nematoda 192 1000 164851 98380 ~sntbsect limnipoundQlDligochaeta
2 198
200 1000
171 7 170003
3620 67339
~Q[eipoundYls msniln~isect Ostracoda
1 4
100 400
859 3434
2715 4434
bimnQpoundytb[s Spa gQ[Qeniy sect21QOi~ sectpoundQttQlsO poundsOsggOi
164 87
2468
1000 1000 1000
140810 74698
2119025
39283 39460
840890
Mean number of organismssample 311 6 Standard deviation 101 1
ill b f 2nean nUll er 0 organIsms 2675398 Standard deviation 8682B8
W= 116 SD= 036 SR= 060 J= 039
A-42
STATION 18 Date 29 August 1984 Depth 30 bull Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samples 10
Total Frequency occurrence
Densi ty 2
(nom )
Taxa number (~ ) x S D
Nematoda 150 1000 128790 28905 Turbellaria 7 400 6010 9096 ~nh imni~Qj Oligochaeta ~~i~2Y~k~~1 ini~CIDgii bih2g~Qb~ Yi(~U2 Bivalvi a
B 145
1 1 2
600 1000
100 100 200
6869 124497
859 859
171 7
677 3 84732
271S 2715 3620
~Q[Qi~yli miDllgni bimn2pound~ih~C sp ~QtQehiY imQUia Harpacticoida
7 7
265 1
500 300
1000 100
6010 601 0
227529 859
8145 10747
139462 2715
sect~QtiQDi ~Q~Q~i~ Chironomid larvae
2471 2
1000 200
2121601 171 7
1063112 3620
Mean number of organismssample 3067 Standard deviation 121 9
2Mean number 0 f organIsms m 2633326 standard deviation 1046718
H = 1 09 SD= 034 SR= 1 04 J= 029
A-43
STATION 58 Date 29 August 1984 Depth 55 111
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (noI 2 ) Total occurrence -----------------
Taxa nUllber (X) X SD
Nemertea 4 400 3434 4434 Nuatoda 64 1000 54950 25016 Turbellaria 9 400 7727 11047 ~Hl~b limli~Q19 Oligochaeta
1 37
100 1000
859 31769
2715 19006
i~Qyh il(~~ bHtlQSlheln Yl Bivalvia
4 4
20
200 300 400
3434 3434
17172
8215 6003
26541 ~e(ijY l bQ~dlH sp
26 1
700 100
22324 859
25662 2715
~Q[QQhil iQ sectjgUell HD Heleidae larvae
418 20
1
1000 800 100
358895 17172
859
129443 12799 271 5
Mean number of organismssample 609 Standard deviation 175
nean num b er 0 f organIsms 1 111 2 522887 Standard deviation 150164
H= 176 SD= 051 SR= 1 30 J= 047
A-44
I I
I
I
STATION SS
Date 29 August 1984 Depth 21 1
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (no2) Total occurrence
Taxa nUllber (X) x S D
Nematoda ISO 1000 128790 37969 Turbellaria 1 100 859 271 5 Oligochaeta 48 1000 41213 16088 ~i~g~sect~~l iQ~~mgi bi~QQg~gb~sect ~i~nsect
10 14
600 600
eSB6 12020
9050 14137
Bivalvia 4 200 3434 7240 ~Q[Q~Yl niQaa Ostracoda
15 7
700 SOO
12879 6010
15806 7069
bmQg~~~b~ SPa 14 800 12020 8295 ~g[gaby mgni sect~g~~Qn ~ngnai Chironomid larvae
IB4 25 9
1000 900 700
157982 21465
7727
35563 16810 6335shy
Mean number of organismssample 481 Standard deviation B6
2Mean number 0 f organlsms m 412987 Standard deviation 74131
H= 24S SD= 074 SR= 1 23 J= 068
A-45
STATION 45 Date 14 September 1984 Depth 61 11
Salinity (bottom) 03 ppt Temperature (bottom) IB4 C No of samples 10
---------------------------------~----------------------------------------
Taxa TotalnUlllDer
Frequency occ~~~ence
Density (no 2) -----X-------sect7B
Nematoda 189 1000 162275 85233 t1tQ SPa
Turbellaria 2 2
200 100
171 7 171 7
3620 5430
~~~nIng limoifQl t1QQQDi~ flQriQ Oligochaeta
5 19
142
400 800
1000
4293 1631 3
121921
6071 12442 30504
~QQifYl mDl~D bimoQpoundt1hgr Spa Cumacea
19 184
2
800 1000 200
1631 3 157982
171 7
130B4 69541 3620
~Q[QnniYm ~~lmQDi Harpacticoida
118 1
1000 100
10131 5 B59
43367 2715
sectfQIIQD fOQgO Chironomid larvae
1780 1
1000 100
1528308 859
673586 2715
Mean number of organismssample 2464 Standard deviation 874
M ean num b er f 20 organlsms 2115590 Standard deviation 750305
H= 151 SD= 046 SR= 1 07 J= 041
A-46
STATION 18 Date 14 September 1984 Depth 21 III
Salinity (bottom) 01 ppt Temperature (botto) 182 C No of samples 10
Frequency DenSity (nom 2 ) Total occurrence ---------------- shy
Taxa nUlDber (i) X SD
Nemertea 1 100 859 271 5 Nematoda 186 1000 159700 44925 Turbellaria 16 400 13738 20717 ~~Dth~~ limni~Ql Oligochaeta
13 55
700 900
11162 47223
9096 30085
~Q~ei~Yl nil~Qi~ 17 900 14596 7069 bimDg~lbg[ Spa b 500 5152 6003 ~Q[Q2niY ~lgQi~ Harpacti coi da
562 2
1000 200
482533 171 7
136766 3620
sectpoundQttQ~Q~ ~n~ni 791 1000 679153 324290
Mean number of organismssample 1649 Standard deviation 447
I 211ean nUll ber 0 f organIsms I 1415831 Standard deviation 384136
H= 179 SD= 064 SR= 084 J= 054
A-47
STATION 58 Date 14 September 1984 Depth 58 III
Salinity (bottom) 01 ppt Temperature (bottom) 191 C No of sampl es 10
-------------------------------------------~------------------------------Frequency Density (nom 2 )
Total occurrence Taxa number eX) X SD
Nemertea 1 100 859 2715 Nematoda 55 1000 47223 18658 Turbellaria 10 500 8586 11448
1 100 859 2715 Oligochaeta 41 1000 35203 17850 ~~iQQ~~gll iu1g[m~i ~Q[Q~Yl nilD bimnQ~Y~h[ Spa ~Q[Q~hiYm lmgui sectpoundQilg1D poundU2D Chironomid larvae
4 10
2 277
23 4
100 500 200
1000 700 300
3434 8586 171 7
237832 19748 3434
10861 11448 3620
50561 21051 6003
Mean number of organismssample 428 Standard deviation 51
M b f 2ean num er 0 organIsms III 367481 Standard deviation 43743
H= 179 SD= 055 SR= 114 J= 052
A-48
I I
STATION SS Date 14 September 1984 Depth 21 II
Salinity (bottom) 01 ppt Temperature (bottom) 190 C No of samples 10
--------------------------------------------------------------------~-----
Frequency Density (no1I2) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 102 1000 87577 39200 Oligochaeta 34 700 29192 31142 ~iQ2Y~y1 int(mgi~ bithQgl~en~ Yi(gDsect ~Q(~i~Y m~DilgDsecti~ bimDQamp~1h(sect sp ~2(QQhiY slmQD 2poundQiiQlsD ~sD~g~nsecti Chironomid larvae
36 18 16 17
100 16
3
1000 600 800 700
1000 800 300
30910 15455 13738 14596 85860 13738 2576
157BO 20953 10078 14621 32126 10861 4147
Mean number of organismssample 342 Standard deviation 97
2Mean nUllber 0 f organlsms m 293641 Standard deviation 83617
H= 262 SD= 079 SR= 095 J= 083
A-49
Appendix B--Sediment particle size and organic content of the Cathlamet Bay
benthic invertebrate sites 13 March through 14 September
1984
iii
1
Station 18a 48 54 57
Survey 1 1 1 1
Month March March March March
Day 13 13 13 13
Particle size (mm) Phib Percent by weight
gt 40 -2 000 000 000
20- 40 -1 000 000 000
10- 20 0 000 009 000
05- 10 1 018 1079 032
025- 050 2 545 7583 2468
0125- 025 3 8731 1225 6783
00625-0125 4 491 037 657
lt0625 (5-12) 216 067 060
Organic Content 160 116 128
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
b Phi= -log2(sediment particle diameter in mm)
B-1
Station 18a 48 54 57
Survey 2 2 2 2
Month April April April April
Day 5 5 5 5
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 003 093 000
05shy 10 1 005 31 75 023
025shy 050 2 087 5904 2368
0125- 025 3 6316 750 7155
00625-0125 4 3056 026 427
lt0625 (5-12) 533 052 028
Organic Content 081 077 065
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-2
Station 45 55 58
Survey 3 3 3 3
Month April April April April
Day 18 18 18 18
Particle size (mm)
gt 40
Phi
-2
Percent by weight
000 000 000
20shy 40 -1 000 000 000
10shy 20 0 005 009 004
05shy 10 1 010 027 013
025shy 050 2 015 095 225
0125- 025 3 097 536 6111
00625-0125 4 453 2821 2205
lt0625 (5-12) 9420 6511 1442
Organic Content 31 42 14
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-3
Station 18a 45 55 58
Survey 4 4 4 4
Month May May May May
Day 4 4 4 4
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 021
05shy 10 1 000 065 063
025shy 050 2 012 370 230
0125- 025 3 091 4099 4696
00625-0125 4 322 3650 3052
lt0625 (5-12) 9575 1810 1939
Organic Content 330 180 160
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-4
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
5
May
17
000
000
005
016
217
5862
2729
1170
100
45 55 58
5 5 5
May May May
17 17 17
Percent by weight
000 000
000 000
005 008
113 031
325 274
1903 5613
2784 2401
4870 1672
240 110
000
000
000
010
020
079
397
9494
390
B-5
Station 18al 45 55 58
Survey 6 6 6 6
Month June June June June
Day 6 6 6 6
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 020
05shy 10 1 005 051 027
025shy 050 2 005 301 1 79
0125- 025 3 074 3189 5404
00625-0125 4 599 4118 2885
lt0625 (5-12) 9317 2332 1485
Organic Content 340 240 150
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-6
Station
Survey
Month
Day
Particle size Cmm) Phi
gt 40 -2
20shy 40 -1
10shy 20 a
05shy 10 1
025shy 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
7
June
18
000
000
005
029
138
3917
4143
1768
180
45
7
June
18
55 58
7 7
June June
18 18
Percent by weight
000
000
000
010
020
080
427
9464
310
000 000
000 000
000 007
011 022
057 190
957 5286
3023 2642
5957 1853
1 70 110
B-7
Station 18al 45 55 58
Survey 8 8 8 8
Month July July July July
Day 2 2 2 2
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 006 002 006
05shy 10 1 006 0l3 023
025shy 050 2 017 088 171
0125- 025 3 074 2712 5365
00625-0125 4 552 3892 3081
lt0625 (5-12) 9345 3294 l354
Organic Content 410 210 160
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-8
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
9
July
17
000
000
003
013
130
4294
4434
1127
130
45
9
July
17
Percent
000
000
000
006
012
051
046
9885
290
55
9
July
17
by weight
000
000
019
048
091
628
3616
5597
030
58
9
July
17
000
000
004
022
158
5017
3148
1650
140
B-9
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18al
10
August
1
45
10
August
1
55
10
August
1
58
10
August
1
Percent by weight
000 000
000 004
001 004
009 018
018 088
098 306
049 2510
9824 7070
000
005
045
763
3604
4495
932
156
100 190 060
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-10
Station 18 45 55 58
Survey 11 11 11 11
Month August August August August
Day 17 17 17 17
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000 000
20- 40 -1 005 000 000 000
10- 20 0 021 003 000 210
05- 10 1 064 009 000 159
025- 050 2 226 027 045 2656
0125- 025 3 3259 131 712 3719
00625-0125 4 4327 195 1737 1159
lt0625 (5-12) 2098 9635 7506 2097
Organic Content 210 300 160 100
Ii I
B-11
Station
Survey
Month
Day
Particle size (mm) Phi
gt40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
12
August
29
000
000
012
046
186
3465
4498
17 93
241
45
12
August
29
55 58
12 12
August August
29 29
Percent by weight
000
000
002
009
026
118
189
9656
540
000 000
000 000
003 011
011 028
055 1013
859 5033
1596 1827
7476 2089
1 70 120
B-12
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
_-------------------- shy
B-13
Station number date depth bottom salinity and temperature (taken
with a Beckman RS5-3 salinometer and probe1) sample size total numbers
frequency of occurrence and mean number 1m2 are presented in the Results
Besides the above H Shannon-Weaver diversity function (Shannon and Weaver
1963) SD Simpson diversity value (Simpson 1949) SR species richness
(Margalef 1958) and J species evenness value (Pielou 1966) were
calculated The following formulas were used s
1) H= - L Pi 10g2 Pii=1
where Pi= the proportion of individuals belonging to the ith
species
S = number of species s
2) SD= 1 - L Pi2 i=1
where Pi= the proporti on of individual s be longing to the i I th
species
3) SR= (S - l)loge N
where S= the number of species at the station
N= the total number of individuals at the station
4) J= H Ilog2 S
where H= the Shannon-Weaver diversity value
S = the number of species
Sediments were analyzed by seiving those particles lt 00625 mm were
considered the silt-clay fraction Organic content was determined by
burning at 550degC for 24 h
II Reference to trade names does not imply endorsement by National Marine Fisheries Service NOAA
6
RESULTS
Physical and biological data are presented by station in Appendix A A
list of the benthic invertebrate taxa identified during the survey are
presented in Table 1 Appendix B presents the sediment analysis
DISCUSSION
Although the purpose of this study was to obtain base line information
prior to modification of the ship navigational channel caution must be used
in interpreting the data First the MOBILOIL oil spill on 19 March 1984
may have affected the local benthic invertebrate biota Oil started to
occur in the benthic samples on the third survey (18 April 1984) and
continued until the end of the study (14 September 1984) Al though some
stations had more oil than others effects on the invertebrates were not
obvious Secondly year to year variations in benthic invertebrate species
and densities occur in the marine environment (Gray and Christie 1983)
Whether the benthic infauna in Cathlamet Bay varies cyclically is unknown
The long term stability or cycles need to be determined before changes of
the benthic infauna can be attributed to any habitat modification or
dredging proj ect
Salinity is considered to be the most important factor controlling the
distribution of estuarine animals (Kinne 1966) Since we performed our data
collections primarily at low tide the given salinity values must be
considered low values Chapman and Brinkhurst (1981) showed that seasonal
variations of benthic invertebrates in the Fraser River estuary were
correl ated with salini ty One common freshwater oligochaete species in
their study Limnodrilus hoffmeisteri also occurs in Cathlamet Bay Adult
hoffmeisteri can tolerate salinities up to 10 ppt and immatures 14 to
7
Table 1--List of invertebrate taxa found at benthic invertebrate sites
located in Cathlamet Bay Oregon March through September 1984
Coelenterata Hydra sp
Turbellaria Nemertea Nematoda Nematomorpha Oligochaeta
Vejdovskyella intermedia Limnodrilus hoffmeisteri Ilydrilus frantzi
Polychaeta Neanthes limnicola Hobsonia florida Manyunkia speciosa
Gastropoda Lithoglyphys (=Fluminicola)
Bivalvia virens
Corbicula manilensis Ostracoda
Limnocythera sp Mysidacea
Neomysis mercedis Cumacea Amphipoda
Eogammarus spp Eogammarus confervicolus Corophium salmonis Corophium spinicorne Pontoporeia hoyi Eohaustorius estuaris
Isopoda Saduria entomon
Harpacticoida Scottolana canadensis
Insecta Diptera adult Diptera pupae Heleidae larvae Chironomidae larvae Chironomidae pupae Trichoptera larvae Hymenoptera Collembola
Hydracarina
Occurrence not quantified
8
15 ppt (Chapman and Brinkhurst 1980) This species appears to be a useful
salinity indicator and future benthic work should identify and enumerate
this species Due to time and taxonomic expertise requirements only the
oligochaete species Vejdovskyella intermedia was enumerated Salinity
tolerances of this species are unknown
Since intersti tial salinities do not vary dielly as do salini ties in
the water column (Sanders et al 1965) interstitial salinities should have
been measured Al though many infauna species may be exposed to overlying
water because of activity andor tubes (exCorophium spp) many benthic
invertebrates are dependent on interstitial salinity levels Measurements
of interstitial salinities are necesssary to determine benthic infauna
sensitivity to salinity intrusion
Finally there appeared to be a large amount of within station
variability in the sediment texture particularly at Stations 55 and 58
The sediment at Station 55 ranged from a very fine sand to almost all clay
The sediment texture variability at Station 58 was a result of the uS
Coast Guard moving Can 5 to a new location forcing us to estimate the
previous location of our station
ACKNOWLEDGMENTS
We wish to thank Maurice Laird Nick Zorich Larry Davis Roy Pettit
Edward Koller and David Miller for their assistance in developing the
sampling device and collecting the samples We express special thanks to
Sandy Lipovsky Thomas Moylan and Susan Newhouse for helping sort and
identify the invertebrates
9
LITERATURE CITED
Chapman P M and R O Brinkhurst
1980 Salinity tolerance of some selected aquatic oligochaetes Internat
Rev der Gesamten Hydrobio1gie 65499-505
Chapman P M and R O Brinkhurst
1981 Seasonal changes in interstitial salinities and seasonal movements
of subtidal benthic invertebrates in the Fraser River estuary BC Est
Coast Shelf Sci 1249-66
Gray J S and H Christie
1983 Predicting long-term changes in marine benthic communities Mar
Ecol Prog Sere 1387-94
Kinne O
1966 Physiological aspects of animal life in estuaries with special
reference to salinity Neth J of Sea Res 3 227-244
Margalef R
1958 Information theory in ecology Gen Syst 336-71
McCabe G T Jr W D Muir R L Emmett and J T Durkin
1983 Interrelationships between juvenile sa1monids and nonsalmonid fish
in thl Columbia River estuary Fish Bu11U S 81(4)815-826
Pie10u E L
1966 The measurement of diversity in different types of biological
collections J Theor BioI 13131-144
Sanders H L P C Mange1sdorf and G R Hampson
1965 Salinity and faunal distribution in the Pocasset River
Massachusetts Limno Ocean 10216-229
Shannon L E and W Weaver
1963 The mathematical theory of communication Univ of Illinois Press
Urbana Ill
10
Simpson E H
1949 Measurement of diversity Nature 163688
11
APPENDIX A--Descriptive summary of benthic invertebrate data collected in
Cathlamet Bay Oregon during March through September 1984
STATION 18 Date 13 March 1984 Depth 46 m Salinity (bottom) 11 ppt Temperature (bottom) 67 C No of samples 15
Frequency Density (nom 2 ) Total occurrence
Taxa number (7) X SD
Nemertea 2 67 1145 4434 Nematoda 134 1000 76702 33169 Turbellaria 22 667 12593 15854 ~~n~b~~ imnpoundQ 31 Oligochaeta 486
933 17744 1468 1 100() 278186 138779
~QtQif~12 mnil~nsectisect 24 Ostracoda 39
933 13738 8462 800 22324 17715
~Q[QQbiYm ~lmQni~ 74 867 42358 38B70 EQntQIH~i2 Qyi 1 EQri gnQQn 1 Harpacticoida 7
67 572 2217 67 572 221 7
333 4007 7159 Insecta 2 67 1145 4434 Chironomid larvae 20 667 1144 B 10090 Collembola 95 867 54378 82588 Hydracarina 1 67 572 221 7
Mean number of organismssample 626 Standard deviation 19 1
M ean num b er 0 f 2organIsms III 537484 Standard deviation 163579
H= 237 so= 069 SR= 1 42 J= 061
A-l
STATION 48 Date 13 March 1984 Depth 107 m Salinity (bottom) 05 ppt Temperature (bottom) bB C No of sampl es 15
Frequency Densi ty (nom 2 ) Total occurrence
Taxa number (7) X SD
Nemertea 31 6b7 17744 1849 1 Nematoda 38 667 21751 22685 Oligochaeta 4 133 2290 6859 ~QQpound12 2nil~nsectisect 31 Ostracoda 1
667 17744 29648 67 572 221 7
~Q9~~[~ spp 1 ~Q[Q2l ~~lQnisect 1 ~Q2sectiQisect sectisect 4 Harpacticoida 1
67 572 2217 67 572 221 7
200 2290 5097 67 572 221 7
Insecta 2 133 1145 3021 Diptera adult 1 67 572 2217 Collembola 24 467 13738 30923
Mean number of organismssample 93 Standard deviation 59
Mean number of organismsm2 795b4 Standard deviation 50740
H= 255 SD= 079 SR= 1 55 J= 071
A-2
STATION 54 Date 14 March 1984 Depth 177 m Salinity (bottom) 00 ppt Temperature (bottom) 66 C No of samples 15
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nemertea 47 1000 26903 14096 Nematoda 7 267 4007 9102 Turbellaria 9 333 5152 1114B Oligochaeta 11 333 6296 10989 Gastropoda 1 67 572 2217 ~Q(Qi~Yl mnil~n2i~ Ostracoda
199 3
1000 200
11390B 171 7
97165 3555
gQ[Qehiy sectlmQnisect Harpacticoida
3 1
200 67
171 7 572
3555 221 7
Heleidae larvae 29 867 16600 10989 Chironomid larvae 2 133 1145 3021 Collembola 2 67 1145 4434
Mean number of organismssample 209 Standard deviation 103
2Mean number 0 f organIsms m 179734 Standard deviation 88247
H = 1 86 SD= 056 SR= 1 33 J= 052
A-3
STATION 57 Date 13 March 1984 Depth 91 m Salinity (bottom) 00 ppt Temperature (bottom) 63 C No of sampl es 15
Frequency Densi ty (no 81 2) Total occurrence
Taxa number (X) X SD
Nemertea 27 667 15455 13459 Nematoda 8 400 4579 6381 Turbellaria 4 200 2290 5097 Oligochaeta 8 400 4579 6381 ~g[gipound~l mnilui Ostracoda
1 1
67 67
572 572
2217 2217
~Qgml[a spp 1 67 572 2217 ~Q[Qeni~m lmQnisect Harpacticoida
2 1
133 67
1145 572
3021 221 7
Insecta 3 67 171 7 b651 Chironomid larvae 1 b7 572 221 7 Collembola 37 400 21179 65700 Hydracarina 1 67 572 221 7
Mean number of organismssample 63 Standard deviation 82
Mean number of organismsm2 54378 Standard deviation 70029
H= 253 SD= 075 SR= 1 83 J= 068
A-4
STATION 18 Date 5 April 1984 Depth 30 II
Salinity (bottoll) 00 ppt Temperature (bottom) 90 C No of samples 15
Frequency Densi ty (no1I 2) Total occurrence
Taxa number (i ) If S D
Nemertea 11 bOO 6296 6042 Nematomorpha 2 133 1145 3021 Nuatoda 119 1000 6811 6 50947 Turbellaria 20 600 11448 13640 ~~~nin~sect liIDni~Q12 Oligochaeta
33 481
1000 1000
18889 275324
10364 142326
~Q~Qi~Yl m2nil~ni2 23 600 13165 1371 7 Ostracoda 33 933 18889 10861 gQ(QQrriYID sect2mQnisectHarpacti coi da
38 7
933 133
21751 4007
13329 13328
Chironomid larvae 16 667 9158 8868 ColI embola 1 67 572 2217
Mean number of organismssample 523 Standard deviation 227
M b f 2ean num er 0 organIsms m 448762 Standard deviation 194508
H= 202 SD= 059 SR= 114 J= 0S6
A-5
STATION 45 Date 18 April 1984 Depth 64 III
Salinity (bottom) 00 ppt Temperature (bottom) 95 C No of samples 15
Total Frequency occurrence
Density (noI 2 )
Taxa number (X) X SD
Nematoda 171 1000 97890 92277 tyg~ sp Turbellaria
1 29
67 600
572 16600
221 7 23506
H~nng~ imDi~g tQQsectQl fg~ig Oligochaeta ~Q[Qi~Y2 m2niD~i Ostracodamiddot
9 41
367 42
100
400 1000 1000 800
1000
5152 23469
210071 24041 57240
781 5 13563
100542 19254 43134
~Q[Qeniym amQnisectHarpacticoida Heleidae larvae
37 2049
1
933 1000
67
21179 117284B
572
189B5 616612
221 7 Chironomid larvae 3 200 171 7 3555 Collembola 1 67 572 221 7 Insect parts 1 67 572 221 7
Mean number of organismssample 1901 Standard deviation 864
b f 2nean num er 0 organIsms m 1632485 Standard deviation 741931
H = 1 52 SD= 046 SR= 1 13 J= 040
A-6
STATION 18 Date 18 April 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom) No of samples 15
Frequency Density (nom2) Total occurrence
Taxa nueber (X) x s D
Nemertea 13 533 7441 9663 Nematomorpha 3 200 171 7 3555 Nematoda 195 1000 111618 63675 Turbell ari a 9 467 5152 6326 ~~ni~~ i~ni~Ql~ 30 867 17172 129B1 Oligochaeta 580 1000 331992 108880 ~QC~i~Ml~ m~nil~n~isectOstracoda
28 18
1000 667
16027 10303
11179 10364
~Q[Q~~iYm sect~Qni2 sect~ci~ gniQQnHarpacticoida
105 1
17
1000 67
400
60102 572
9731
25553 2217
19970 Chironollid larvae 16 667 9158 8B6B
Hean number of organismssample 677 Standard deviation 199
M ean num b I 2er 0 f organIsms AI 580986 Standard deviation 171095
w = 202 SD= 062 SR= 1 10 J= 056
95 C
A-7
STATION 58 Date 18 April 1984 Depth 67 m Salinity (bottom) 00 ppt Temperature (botto) No of samples 15
Frequency Density (nom2) Total occurrence
Taxa number (~) X SD
Nemertea 62 933 35489 26338 Nematoda 224 1000 128218 49903 Turbellaria 9 600 5152 4354 ~nt~sect imni~Q Oligochaeta
1 79
67 1000
572 45220
2217 23506
bnQgYRhY~ Yi~~nE ~Q(~i~Y nil~ni Ostracoda
2 10 19
67 533 600
1145 5724
10876
4434 6214
10989 ~Q[QeniY sectQOiHarpacticoida
30 2
B67 133
17172 1145
12142 3021
Heleidae larvae 6 333 3434 5430 Chironomid larvae 9 400 5152 7B1 5 Chironomid pupae 2 133 1145 3021
Mean number of organismssample 303 Standard deviation 94
I 11 ean num ber 0 f organlsms 2 260442 Standard deviation 81043
H= 233 SO= 070 SR= 1 36 J= 063
97 C
A-B
Frequency Density (nolm 2) Total occurrence -----------------
Taxa number (7) X SD
Nemertea 16 467 9158 10989 Nematoda 266 1000 152258 54541 Turbellaria 23 600 13165 15518 ~l~nH ~Q~iQH 2 133 1145 3021 Oligochaeta 181 1000 103604 56532 bi~hQg~Qn~~ ~it~l~ ~QtQifg mli~lsectisectOstracoda
3 59 15
200 1000 733
1717 33772 8586
3555 23054
7256 ~Q[QQhiY HmQtlsect ~Q[QehiYm sect21tlfQ[lg EQlQQQt~i hQ~i
466 3 1
1000 200 67
266738 171 7 572
75094 3555 221 7
Harpacticoida 30 400 17172 40402 Chironomid larvae 10 533 5724 6214
Mean number of organismssa_pIe 717 Standard deviation 143
I 2Mean number 0 f organlsms m 615330 Standard deviation 122532
H= 226 SO= 072 SR= 119 J= 061
STATION 55 Date 18 April 1984 Depth 30 1ft
Salinity (bottom) 00 ppt Temperature (bottom) 93 C No of SaIIples 15
A-9
STATION 45 Date 4 Hay 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 103 C No of samples 10
Frequency Density (noI2) Total occurrence ---------------- shy
Taxa number (Xl X SD
Neutoda 269 1000 230963 167296 Turbellaria 1 100 859 2715 ~u~yuti Q~iQ ~Ub imni~Q
1 2
100 100
859 171 7
2715 5430
j2~Qn flec Oligochaeta
28 169
BOO 1000
24041 145103
19326 74351
~igeYk~ll iulCIDai ~Q(Qi~Y uini Ostracoda
32 4 5
aoo 400
400
27475 3434 4293
22463 4434 6071
biQQ~~tbt sp ~e(QQbYm mQoi sectampQeD ~nQDisect Chironomid larvae
25 2
578 2
900 200
1000 200
21465 1717
496271 171 7
15279 3620
293820 3620
Mean number of organismssample 111 8 Standard deviation 522
11 b f I 2ean num er 0 organIsms m 95991 5 Standard deviation 447842
H= 193 SD= 065 SR= 118 J= 052
A-10
STATION 18 Date 4 Hay 1984 Depth 34 II
Salinity (bottom) 00 ppt Temperature (bottom) 104 C No of saMples 10
Frequency Density (noI 2 ) occurrence ----------------shy
Taxa (X) X SD
Nemertea 10 600 8SB6 10709 Nuatoda 153 1000 131366 47899 Turbellaria 8 600 6869 6773 ~n1b limnpoundQl Oligochaeta
11 147
700 1000
middot9445 126214
9449 6231 7
~i~g~kXl in1(m~i ~g(2iY OiOi Ostracoda
86 4 1
900 300 100
73840 3434 859
61543 6003 2715
bimoQpoundx1b( sp ~2(QQbiYm mgoiDi ptera adult
3 57
3
300 900 300
2576 48940
2576
4147 21815 4147
Chironomid larvae 4 300 3434 6003 Chironomid pupae 1 100 859 2715
Hean nUMber of orQanismssample 489 Standard deviation 160
b f 2nean nUll er 0 organIsms II 418997 Standard deviation 137721
H= 243 SD= 076 SR= 1 34 J= 066
A-l1
STATION 5B Date 4 Hay 1984 Depth 61 bull Salinity (botto~) 00 ppt Temperature (bottom) 110 C No of suples 10
Frequency Density (nom 2) Total occurrence ---------------- shy
Taxa number (X) X SD
Neertn 41 1000 35203 21206 Nematoda 211 1000 181165 53305 Turbellaria 4 200 3434 7240 Oligochaeta 89 1000 76415 32240 ~i~2~~~11~ iU1(~i~bi1begygny YitQ ~e(biYl ~OiDi OstracDda
4 3
20 1
400 200 BOO 100
3434 2576
17172 859
4434 5795
19829 2715
biue~1bt~ sp ~2(egniY Imeoi sectg11g1O OdD Helei dae larvae
5 32
1 1
400 900 100 100
4293 27475
859 859
6071 18010 2715 2715
Chironomid larvae 7 400 6010 9096
Mean number of organismssample 419 Standard deviation 93
b f 2ean nUll er 0 organIsms m 359753 Standard deviation 79875
H= 221 SD= 068 SR= 138 J= 060
A-12
Frequency Density (nolm 2) occurrence -----------------
Taxa (X) X SD
Nemertea 23 900 1974S 15171 Neutollorpha 1 100 859 271 5 Nellatoda 269 1000 230963 69923 Turbellaria 10 600 8586 991 4 ~~xYnki Q~ampiQ 4 300 3434 6003 ~nb limnipoundQl Oligochaeta
1 79
100 1000
859 67829
2715 40363
~i~Q~kXl io[~i biDe9XQDX ~i[~OBi valvi a
11 3 1
800 300 100
9445 2576 859
6335 4147 271 5
~Q[~poundY mnil~n bimoQampXD[ sp ~Q[QabiY lQO Harpacticoida
18 2
159 1
700 200
1000 100
15455 171 7
135659 859
13904 3620
54272 2715
Chironomid larvae 2 200 171 7 3620 Trichoptera larvae 1 100 859 2715
STATION 55 Date 4 May 1984 Depth 21 m Salinity (bottom) 00 ppt Temperature (bottom) 107 C No of suples 10
Mean number of organismssamples 594 Standard deviation 147
Mean number of organismsm2 501422 Standard deviation 126525
H= 219 aD= 069 SR= 1 63 J= 055
A-13
STATION 45 Date 17 May 1984 Depth 61 m Sal i ni ty (bottom) 01 ppt Temperature (bottom) 121 C No of sampl es 10
Frequency Total occurrence
Taxa nUlllber (7)
NelDertea 1 100 859 2715 Nematoda 163 1000 139952 127996 Polychaeta 1 100 859 2715 ~~~n~h~ imni~Qs Hobsonia florida
2 6
200 600
171 7 5152
3620 4434
Oligochaeta 329 1000 282479 13291 8 ~~lQQYsectk~~12 in~~rmQi 57 900 48940 33142 ~Qr~ipound~2 ffi2niDi 6 500 5152 6003 Ostracoda 5 200 4293 10898 bimDg~yth( SPa 13 600 11162 12176 ~Q(Qebi~m sectQDisect Harpacticaida
2 2
200 100
1717 1717
3620 5430
2poundQttQD poundDQDsectisectDiptera adult
296 1
1000 100
254146 859
172633 271 5
Mean number of organismssample 884 Standard deviation 326
b f I 2nean num er 0 organlss m 759002 Standard deviation 280131
H= 209 SD= 071 SR= 1 33 J= 055
A-14
STATION 18 Date 17 May 1984 Depth 30 m Salinity (bottom) 00 ppt Temperature (bottom) 122 C No of samples 12
Frequency Density (nom2) Total occurrence -----------------
Taxa number (X) X SD
Nematoda 50 833 35775 22815 ~ntb limnipoundQl 3 Oligochaeta 97
250 833
2147 69404
3883 48495
~igQ~~k~ intr~ 27 ~QrQipoundY mnin~i~ 5
667 333
19319 3S7S
19068 5740
Ostracoda 1 83 716 2479 bimnQpound~nr sp 5 ~Q(Q~bY ~mQni S4 ~Q(Q~niY ~QinipoundQ(n 3
333 833 250
3578 60102
2147
5740 43780 3883
fgnQ2Q(i bQ~i 1 sectpoundQtgO poundnQn~i 2 Chironomid larvae 4
83 167 250
716 1431 2862
2479 3342 5592
Mean number of organismssample 235 Standard deviation 116
nean nURl b er 0 f organlslls II 2 201771 Standard devi ati on 99221
H= 236 SD= 075 SR= 1 35 J= 066
A-15
STATION 58 Date 17 May 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) 123 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nemertea 2 100 171 7 5430 Nematoda 75 1000 64395 34404 ~~2Qih~a limQi~Q 2 200 171 7 3620 Oligochaeta 60 1000 51516 33376 ~~igQY~~~12 iQ~[~~gi 2 200 171 7 3620 bitQQ9~Bh~sect Yr~Qsect 3 200 2576 579~
gQ[Qi~Yl ID2Dil~nsectisect Ostracoda
6 6
500 400
5152 5152
6003 8295
binQ~~nr[ sp gg[QQOYm mQQsect sect~QttQn 5n2Q~nsectia Chironomid larvae
2 34
1 1
200 1000
100 100
171 7 29192
859 859
3620 12927 271 5 2715
Mean number of organismssample 194 Standard deviation
2Mean nurn ber 0 f organIsms fA 166568 Standard deviation 56259
H= 225 SD= 072 SR= 1 45 J= 063
A-16
66
STATION 55 Date 17 May 1984 Depth 24 II
Salinity (bottom) 00 ppt Telllperature (bottom) 126 C No of samples 10
Total Frequency occurrence
Taxa nUllber (X) X SD --------------------------------------------------------------~-----------
Nematollorpha 2 200 171 7 3620 Nematoda 63 1000 54092 35297 Oligochaeta 94 1000 80708 44004 ~~iQQY~k~~l iQt~(m~Qi bitnQg~Qh~~ Yi[~Q gQ[QipoundY~ mni~Q~i Ostracoda
10 9 4 2
600 800 300 100
8586 7727 3434 171 7
9050 4874 6003 5430
bimnQ~~ln~[e sp ~Q(QQbiYm mQD ~Q[QQbiYm 2inipoundQ[n~ Chironomid larvae
6 142
3 1
600 1000 200 100
5152 121921
2576 859
4434 50682 5795 2715
Mean number of organismssample 336 Standard deviation 62
2Mean num ber 0 f organisms m 288490 Standard deviation 53421
H= 214 SD= 071 SR= 119 J= 062
A-17
STATION 45 Date 1 June 1984 Depth 61 m Salinity (bottom) 01 ppt Temperature (bottom) 139 C No of samples 10
Total Frequency occurrence
Density (no2)
Taxa nUllber (1) X SD
Nematoda 174 900 149396 132347 Turbellaria 5 200 4293 10898 ~~~QiQ~sect tmQtpoundQ~ ~QQsectQ flQi~sect Oligochaeta ~~iQQysecttygl~ iQl~rm~~i2 ~Q[Qi~~l~ ~~DilgDsectisect Ostracoda
5 20
190 103
12 5
400 900
1000 900
60 (I 400
4293 17172
163134 88436 10303 4293
6071 8095
92563 51524 11304 6071
bimnQpoundytng[ sp ~gQmYsectisect IDg[pound~Qisect ~Q[QQhi~m sectlmQDisect sectpoundQtiQlsectQ pound~Qgsectisect ChironQmid larvae
33 1
10 375
2
900 100 700
1000 200
28334 859
8586 321975
171 7
17196 2715 7010
179201 3620
Mean number of organismssample 935 Standard deviation 254
nurn b 0 f 2lean er organlsms m 802791 Standard deviation 218423
H= 239 SD= 075 SR= 1 22 J= 065
A-18
STATION 18 Date 1 June 1984 Depth 30 AI
Salinity (bottom) 00 ppt Temperature (bottom) 134 C No of samples 11
Frequency Density (no 1m2)
Taxa Total number
occurrence (X)
---------------- shyX SD
Turbellaria 14 636 10928 1157 7 ~~~Qltlg~ ilipoundQ~ Oligochaeta
10 178
727 1000
7805 138937
601 6 67913
~~iQQy~tY~l~ ill~[m~Qi~ 122 636 95227 93619 ~Q[Qipound~ l~i~lsectisect Ostracoda
7 1
455 9 1
5464 78 1
6946 2589
billQylhg[ Spa 16 818 12489 10420 GQ[QQQil HQi~ 139 1000 108496 70934 gQ[Qebi secteiifQ[~ sectQiiQi2 ~Q~sectisect Diptera pupae
1 2 1
9 1 182
11 1
781 1561 781
2589 3473 2589
Chironomid larvae 2 182 1561 3473
Mean number of organismssample 714 Standard deviation 284
nean num b er 0 f organlsms m 2 612728 Standard deviation 244249
H= 232 SD= 075 SR= 1 25 J= 063
A-19
STATION 58 Date 1 June 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 138 C No of samples 10
Frequency Density (noI 2 ) Total occurrence
Taxa number (X) X SD
Nematoda 173 1000 148538 47383 Turbellaria 3 300 2576 4147 Oligochaeta 53 1000 45506 32139 ~giQgY2k~g~ ini~[m~Qi~ bQg91YehY2 Yi[~nsect ~Qr~i~Yl m~nl~n~i
26 1
10
600 100 500
22324 859
8586
3391 2 2715
13424 bimnQpound~Q~[ sp ~Q9~m[Y poundgnitYpoundQlysect ~QtQehiYm ~lQni
4 1
46
200 100
1000
3434 859
39496
8295 2715
22243 Chironomid larvae 1 100 859 271 5
Mean number of organismssample 318 standard deviation 103
M b f I 2ean num er 0 organlsms III 273035 Standard deviation 88842
H = 1 99 SD= 065 SR= 1 08 J= 060
A-20
STATION 55 Date 1 June 1984 Depth 27 m Salinity (bottom) 00 ppt Temp era t u r e (b 0 t tom) 140 C No of samples 10
Frequency Density (nom 2 ) Total occurrence
Taxa nueber (X) X SD
Nematoda 157 1000 134800 69524 Turbellaria 9 400 7727 13696 tlHl~lk ~2~~iQH 1 100 859 2715 Oligochaeta 49 1000 42071 32745 ~~iQQysect~gl~ S[l9sect bHbQghQb~~ Yirl~
10 1
400 100
8586 859
12799 2715
tQ[Qpoundls l2lilUsect bilQHSbg[ sp ~QrQQbil nllQisectHarpacticoida
4 7
134 1
400 500
1000 100
3434 6010
115052 859
4434 7069
44742 271 5
sectpoundQUQlls poundsQgn~sect Chironomid larvae
1 1
100 100
859 859
271 5 2715
Hydracarina 1 100 859 2715
Hean number of organismssample 376 Standard deviation 132
M b f 2ean num er 0 organIsms m 322834 Standard deviation 113127
H= 202 SD= 068 SR= 1 40 J= 055
A-21
STATION 45 Date 18 June 1984 Depth 67 m Salinity (bottom) 01 ppt Temperature (bottom) 149 C No of samples 10
Frequency Density (nom2)
Taxa Total nUllber
occurrence ex) i SD
Nematoda 109 1000 93587 3891 7 Turbell ari a 3 200 2576 5795 ~g~tbg limoipoundQl Q~Qni2 fQ(i~2 Oligochaeta ~gigQ~~Y inl[ggi ~Q[QiSY2 moilo Ostracoda
3 2
194 44
7 3
200 200
1000 1000 200 200
2576 171 7
16656B 37778 6010 2576
5795 3620
118364 36020 12831 5795
bimoQampl~n~[2 sp ~Q[QQbiYm lmgoi Harpacticoida sectpoundQQ1202 pound2022Osect Chironomid larvae
68 1 1
113 2
900 100 100
1000 200
58385 859 859
97022 171 7
97627 2715 2715
73976 3620
Mean number of organismssa_pie 550 Standard deviation 371
Mean nUll ber 0 f organIsms 2II 472230 Standard deviation 318519
H= 242 SD= 077 SR= 1 32 Ja 065
A-22
STATION 18 Date 18 June 1984 Depth 34 m Salinity (bottom) 00 ppt Temperature (bottom) 155 C No of samples 10
Frequency Density (nom 2) Total occurrence ----------------shy
Taxa nUlber (Z) X SD
Neutoda 291 1000 249853 138826 Turbellaria 1 100 859 2715 ~~n~~nki~ sectQ~~iQ~2 ~g~ntbg2 limni~Q9 Oligochaeta
1 3
123
100 300
1000
859 2576
105608
271 5 4147
48240 ~~igQY~~~~9 int~(mgii ~Q[~i~~~ mini~ni bimnQ~ylbg(~ Spa
67 6 5
1000 500 400
57526 5152 4293
40485 6003 6071
~Q(QebiYm ~imQnisect Harpacticoida
80 2
1000 200
68688 171 7
41276 3620
sect~QttQini ~2nig~n~i Chironomid larvae
2 4
200 300
171 7 3434
3620 6003
Mean number of organismssample 585 Standard deviation 194
I 2Mean urn b er 0 f organIsms m 502281 Standard deviation 166943
H= 203 SD= 068 SR= 1 20 J= 057
A-23
STATI ON 58 Date 18 June 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (noI 2) Total occurrence
TaKa number (X) X SD
Nellertea 2 100 1717 5430 Nematoda 160 1000 137376 6361 1 Turbellaria 4 400 3434 4434 Oligochaeta 36 1000 3091 0 14705 ~iQQYik~ Q1rQ 4 300 3434 6003 bitnQgl~ebysect YrDsect ~Q[QiY~ ~~nni biQQpoundY1h[ sp ~Q[Qeng ~ilQD Chironomid larvae
3 1 3
61 1
300 100 300
1000 100
2576 859
2576 52375
859
4147 2715 4147
1428 1 2715
Chironollid pupae 1 100 859 271 5
Mean number of organismssample 276 standard deviation 72
nean nurn b er 0 f organIsms I 2 236974 Standard deviation 61410
H = 1 78 SD= 060 SR= 1 23 J= 051
A-24
STATION 55 Date 18 June 1984 Depth 18 m Salinity (bottom)1 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (no 1m2) occurrence
Taxa (X) X SD
Nematoda 160 1000 137376 43967 Turbellaria 1 100 859 271 5 Oligochaeta 61 1000 52375 31985 ~~iQQY~kY~~ int~[mQi~ ~Q[Qipound~l~ m~nini~ biIDnQ~Ylb[s sp
3 3 3
300 300 300
2576 2576 2576
4147 4147 4147
~Q[Q~bi~ ~slIDQni~ Chironomid larvae
85 6
1000 600
72981 5152
34165 4434
Mean number of organismssample 322 Standard deviation 75
2Mean number 0 f organIsms m 276469 Standard deviation 64099
H= 178 5D= 065 SR= 0B4 J= 059
A-25
Frequency Density (no2) occurrence -----------------
Taxa (7) X SD
Nematoda 104 1000 89294 47409 Turbell ar i a 1 100 859 2715 ~~~nQ~sect imni~Q~ tjQQsectQlis flQig~ Oligochaeta
2 1
297
100 100
1000
171 7 859
255004
5430 271 5
146273 ~~i~QYsect~Y~lls ilr2is gQrQi~y~ IDDilDia
24 4
600 300
20606 3434
27212 6003
Ostracoda 2 200 171 7 3620 biDQSy~b~C~ sp M~QYsectisect m~r~~Qi ~QrQeniy QD Harpacticoida
157 1 1 1
900 100 100 100
134800 859 859 859
73197 2715 2715 2715
sectpoundQttQDs SsDQD 113 900 97022 61656
STATION 45 Date 2 July 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) No of samples 10
172 C
Mean number of organismssample 708 Standard deviation 339
M ean num b er f 20 organisms 607889 Standard deviation 290B22
H= 216 SD= 073 SR= 1 27 J= 058
1-26
STATION 18 Date 2 July 1984 Depth 24 WI
Sal inity (bottom) 00 ppt Temperature (bottom) 172 C No of samples 10
--------------------------------~-----------------------------------------Frequency Density (nom2)
Total occurrence Taxa number (7) X SD
Nematoda 202 1000 173437 113532 ~~~nih~sect mnpoundQ~ Oligochleta
4 102
400 1000
3434 87577
4434 54873
~~igQYsect~Y~12 inl~rmgi2 ~Q[~poundYl~ m~ni~nsectisect bimnQpoundylh~[~ Spa
115 4
15
900 300 900
98739 3434
12879
100720 6003 9274
~Q[QQniY~ sect~QDi~ 55 900 47223 40525 Harpacticoida 1 100 859 2715 sectpoundQiiQlD SDg~DEisect Chironomid larvae
2 6
200 400
1717 5152
3620 7240
Hymenoptera 1 100 859 2715 Hydracarina 1 100 859 2715
Mean number of organismssample 508 Standard deviation 253
2Mean num ber 0 f organIsms m 436169 Standard deviation 217580
H= 225 SD= 074 SR= 1 22 J= 063
A-27
STATION 58 Date 2 July 1984 Depth 58 1
Salinity (bottom) 00 ppt Temperature (bottom) IBO C No of samples 10
Frequency Density (no2) Total occurrence
Taxa number ltX) i SD
Nematoda 151 1000 129649 42729 Turbellaria 1 100 859 2715 01 i gochaeta 41 1000 35203 22698 ~~i~e~~~ int~~m~~ 3 200 2576 5795 btbQglYRhY~ Yir~n~ ~e~~ampy mni~niii bimQeamp~tb~ sp ~e~eQhiY ~mQni Chironomid larvae
1 4 2
68 1
100 300 200
1000 100
859 3434 171 7
58385 859
271 5 6003 3620
1557 1 2715
Mean number of organisassample 272 Standard deviation
I 2Mean num ber 0 f organIsms I 233539 Standard deviation 62546
H = 1 69 SD= 061 SR= 099 J= 053
A-28
73
STATION 55 Date 2 July 1984 Depth 15 III
Salinity (bottom) 00 ppt Temperature (bottom) 182 C No of samples 10
Frequency Density (nom2) occurrence
Taxa (X) X SD
Nematoda 184 1()00 157982 5264B Turbellaria 1 100 859 271 5 Oligochaeta ~~iQQ~sect~Y~ll~ n~[~~Qi~ bitnggYQDYsect Yi[~nsect ~QrQipoundM2 m2ni~nsectisect bimnQpoundYn~[2 sp ~QrQQhiM Qni Harpacticoida
91 2 1 B 2
96 2
1000 200 100 500 200
1000 200
78133 171 7 859
6869 171 7
82426 1111
26058 3620 271 5 1890 3620shy
25980 3620
ChirDnomid larvae 5 400 4293 6071 Chironolllid pupae 1 100 859 2715
Mean number of organismssample 393 Standard deviation 53
2t1ean nUllber Df organlsms III 337430 Standard deviatiDn 45080
H= 187 SD= 067 SR= 116 J= 054
A-29
STATION 45 Date 17 Jul y 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (X) X SD
Nematoda 215 1000 184599 45837 ~~n~b~~ imDipoundQ Qe~Qni fllHi2
3 1
300 100
2576 859
4147 2715
Oligochaeta 305 1000 261873 147955 ~~iQQY~k~ in~rm~2i ~Qr~ipoundYl IDniln~i~ Ostracoda
17 1 2
500 100 200
14590 859
171 7
22554 2715 3620
bmnQpound~ihr sp ~QCQQhiY ~lQD~
176 1
1000 100
151114 859
57125 2715
Harpacticoida 4 300 3434 6003 sectQ~~Qn poundnQnai~ Chironomid larvae
91 5
1000 400
78133 4293
61310 6071
Mean number of organismssample 821 Standard deviation 275
M b f 2ean num er 0 organlsms m 70491 1 Standard deviation 236369
H= 215 SD= 073 SR= 114 J= 060
A-30
STATION 18 Date 17 Jul y 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom 203 C No of samples 10
Frequency Density (001 2 Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 339 1000 291065 119140 Turbellaria 3 200 2576 5795 ~~2~b~~ limnipoundQ12Oligochaeta
4 18S
300 1000
3434 161417
6003 89393
~~iQQy~~~ls in~(ID~Qi bim~Qampy~bg(2 Spa
34 16
800 700
29192 1373B
22967 15252
~g(gebi~m ~21mQni2 Harpacticoida
52 3
1000 200
44647 2576
25212 5795
2ampQ11Q1202 ampS02Qg~2i2 Chironomid larvae
18 10
700 700
15455 8586
13904 701 0
Mean number of organi$mssample 667 Standard deviation IBB
H ean nurn b er 1 20 f organIsms m 572686 Standard deviation 161750
H = 1 99 SD= 065 SR= 090 J= 060
A-31
STATION 58 Date 17 July 1984 Depth 55 AI
Salinity (bottom) 00 ppt Temperature (bottom) 197 C No of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nellatoda 173 1000 14853B 66390 Turbellaria 1 100 859 271 5 ~~~n~hu ini~QA Oligochaeta
1 46
100 1000
859 39496
2715 26293
~gipoundQy~~ygl2 in~rJg~i~ b1nQglYRnY~ Yi( Bivalvia
6 2 1
400 200 100
5152 1717 859
8295 3620 271 5
ei~ IDnH~n~i~ 2 200 171 7 3620 Ostracoda 1 100 959 271 5 biIDQHlh~( Spa ~Q(QRbim ~21Qnisect Diptera pupae
1 94
1
100 1000 100
859 80708
859
2715 35332 2715
Heleidae 1arvae 5 500 4293 4525 Chironomid larvae 1 100 859 2715
Mean number of organismssample 335 Standard deviatiDn 113
Mean number of organismsRI2 287631 Standard deviation 97413
H= 1 86 SO= 064 SR= 155 J= 049
A-32
STATION 55 Date 17 July 1984 Depth 18 m Sali nity (bottom) 00 ppt TeAlperature (bottom) 199 C No of samples 10
Frequency Density (nom2 ) occurrence
Taxa (X) x S D
Nematoda 61 1000 52375 33972 Turbellaria 1 100 859 2715 Oligochaeta 24 900 20606 11590 ~~i2QY~k~~1 iOi[2 bimDQ~xlb~r sp ~Q[QQhi~ sectgni~ Chironomid larvae
3 1
38 3
200 100
1000 300
2576 859
32627 2576
5795 2715
19326 4147
Mean number of organismssample 131 standard deviation 54
M b f 2ean num er 0 organIsms 112477 Standard deviation 46757
H= 184 SD= 066 SR= 085 J= 065
bull
A-33
STATION 45 Date 1 August 1984 Depth 58 m Sal i nity (bottoll) 03 ppt Temperature (bottom) 203 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa nUllber (X) X SD
Nematoda 145 1000 124417 52344 Turbellaria 1 100 859 2715 Mmth~sect iHpoundQ~ Q~~Qi ilQ[i9Oligochaeta
5 3
196
500 300
1000
4293 2576
168286
4525 4147
91064 ~igQYsect~~li int9i Ostracoda
2 3
100 300
171 7 2576
5430 4147
bimnQpoundtl sp ~Q[Q2hiY sectlQni~
240 6
1000 600
206064 5152
73526 4434
sectpoundQtQl poundngnai~Helei dae larvae
1862 1
1000 100
1598713 859
966134 271 ~
Mean number of organismssample 2464 Standard deviation 1156
211 ean num ber 0 f organIsms II 2115590 Standard deviation 992518
H= 124 SD= 041 SR= 089 J= 036
A-34
STATION 1S Date 1 August 1984 Depth 24 II
Salinity (bottom) 00 ppt Temperature (bottom) 198 C No of samp I es 10
Frequency Density (nom2) occurrence ---------------- shy
Taxa (X) X S D
Nuertea 1 100 859 2715 Nellatolllorpha 1 100 859 2715 Nematoda 248 1000 212933 108288 Turbellaria 4 400 3434 4434 ~untb~la Hli~g Oligochaeta
4 206
400 1000
3434 176872
4434 75309
~~igQYli~dli i[t~(gi~ ~QtQpound l binQ~ybt2 sp ~2l~bi Q[i ~2tlgtQ(ila tirisect sectpoundQtel poundl9lla Chironomid larvae
10 1
20 205
1 574
9
500 100 800
1000 100
1000 400
8586 859
17172 176013
859 492836
7727
10709 271 5
14021 48104
271 5 150531
13696
Mean number of organismssample 1284 Standard deviation 290
M b f I 2ean nurn er 0 organIsms III 1102442 Standard deviation 2488B5
H= 211 SD= 071 SR= 1 16 J= 057
A-35
STATION 58 Date 1 August 1984 Depth 55 m Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samp 1es 10
Frequency Densi ty _ ltnom2 ) Total occurrence
Taxa number (7) X SD
Nemertea 1 100 859 2715 Nematoda 22 900 18889 15036 Turbellaria 1 100 859 2715 Oligochaeta 19 700 16313 17385 biiQQgl~QhY~ YiCg~~ 2 200 171 7 3620 ~Q[~i~~l~ m2nil~n2i2 ~Q[QehiYm ~lmQni2
4 164
300 1000
3434 140810
6003 103048
Heleidae larvae 8 500 6869 8868
Mean number of organismssample 221 Standard deviation 111
I 2Mean num ber 0 f organIsms m 189751 Standard deviation 95391
H = L 37 SD= 043 SR= 090 J= 046
A-36
STATION 55 Date 1 August 1984 Depth 15 m Salinity (bottoll) 01 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (i ) X SD
Nemertea 1 100 859 2715 Neutoda 122 1000 104749 7394B Turbellaria 4 300 3434 6003 ~~~~~nt~ secte~poundQa~ Oligochaeta
1 118
100 1000
859 101315
2715 61223
~giQgY~k~~l iot~[m~Qi btbQg~2b~ Y[O ~grQipound~ ~nl~ni b~ngpound~tb~[ Spa
3 1 5 1
200 100 500 100
2576 859
4293 859
5795 2715 4525 2715
~Q[QebiYm ~mQoi sect~QttQ~ ~OQOi Heleidae larvae
42 2 2
800 200 100
36061 171 7 171 7
21341 3620 5430
Chironomid larvae 4 400 3434 4434
Mean number of organismssapIe 306 Standard deviation 169
M b f I 2ean nurn er 0 organIsms m 262732 Standard deviation 145101
H = 198 SD= 067 SR= 1 45 J= 054
A-37
~-- --------------~~-------------
STATION 45 Date 17 August 1984 Depth 61 1
Salinity (bottom) 10 ppt Temperature (bottom) 210 C No of samp 1es 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nematoda 240 1000 206064 130213 ~~h~sect limQ tjQ~~Hi~ fQ[i~~ Oligochaeta
31 2
245
400 100
1000
26617 1717
210357
75228 5430
121374 babgglYQbl~ Yi[~sect 1 100 859 2715 Ostracoda 1 100 859 271 5 biQ~xtb~[ Spa ~~Q~~isect ~[pound~Qisect ~Qgebi HQOi
333 2
143
1000 200
1000
28591 4 171 7
1227BO
106553 3620
106860 sectpoundQUg~ poundg~nsectisect 1738 1000 1492247 68441 7
Mean number of organismssample 2736 Standard deviation 944
M b f I 2ean num er 0 organlslls m 2349130 Standard deviation 810600
H= 172 SD= 056 SR= 079 J= 052
A-38
STATION 18 Date 17 August 1984 Depth 27 III
Sal i ni ty (botto) 01 ppt Temperature (bottom) 214 C No of samples 10
Frequency Density (nom 2 ) occurrence
Taxa (X) X SD
Nematoda 186 1000 159700 62468 ~tgt SPa 2 100 171 7 5430 Turbellaria 8 400 6869 8868 ~~ntbg2 imnipoundQ 12 700 10303 11304 Oligochaeta 283 1000 242984 90509 ~~iQQY~~Y~lls inlgtmggisBivalvia
4 1
400 100
3434 859
4434 271 5
~Qt~i~Y nilnsectisectbimnQpoundttbg[s SPa ~QtQQbi~ islmQDi2
1 17
286
100 900
1000
859 14596
245560
271 5 10747 83461
sectpoundetteln poundDsggnsectisect Chironomid larvae
526 4
1000 3Q0
451624 3434
179610 6003
Mean number of organismssapIe 1330 Standard deviation 162
Mean nurn ber I 20 f organIsms m 1141938 Standard deviation 139389
H= 214 SD= 073 SR= 1 06 J= 060
A-39
STATION 58 Date 17 August 1984 Depth 55 II
Salinity (bottom) 01 ppt Temperature (bottom) 220 C ND of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (7) x S D
Nematoda 68 1000 58385 27689 Turbellar i a 4 200 3434 8295 Oligochaeta 19 800 16313 13084 ~~i~Q~k~~l~ in~~[m~i bitUQ9Y2bYa Yi[~na Bivalvia
3 3 4
300 300 300
2576 2576 3434
4147 4147 6003
gQ[QipoundYl~ mnilDa 1 100 859 2715 binQpoundY~[ sp gQ[Q2UY a~mgnia sect~Qtgl~n ~n~~ni
2 338
6
100 1000 400
171 7 290207
5152
5430 56636 7240
Mean number of organismssample 448 Standard deviation 72
W b f 2lean num er 0 organlsms II 384653 Standard deviation 61988
H = 1 27 SD= 041 SR= 1 02 J= 038
A-40
STATION 55 Date 17 August 1984 Depth 18 m Salinity (bottom) 00 ppt Temperature (bottol) 223 C No of samples 10
Frequency Density (nom 2 ) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 291 1000 249853 118104 Turbellaria 1 100 859 2715 M~ntb~ mni~Q Oligochaeta
1 47
100 1000
859 40354
2715 28347
~~iQQ~sectkY~ll int~[m~gi bitbQQ1YSDY Yi(gn Bivalvia
25 12
6
900 500 400
21465 10303 5152
1231 0 18459 7240
~Q~2ipoundY mnil~ni Ostracoda
11 8
400 600
9445 6869
12442 6773
bmnQpoundYb~r~ SPa 52 1000 44647 19746 ~QrQsbY lmgnisectsQiielo snQ~ni~ Chironomid larvae
43 5
15
1000 400 BOO
36920 4293
12879
21436 6071 8344
Mean number of organismssample 517 Standard deviation 174
M b f I 2ean num er 0 organlsms m 443896 Standard deviation 149431
W = 228 SD= 065 SR= 1 33 J= 062
A-41
STATION 45 Date 29 August 1984 Depth 55 III
Salinity (bottom) 07 ppt Temperature (bottom) 199 C No of samples 10
Frequency Density (noI 2) Total occurrence
Taxa number (X) X SD
Nematoda 192 1000 164851 98380 ~sntbsect limnipoundQlDligochaeta
2 198
200 1000
171 7 170003
3620 67339
~Q[eipoundYls msniln~isect Ostracoda
1 4
100 400
859 3434
2715 4434
bimnQpoundytb[s Spa gQ[Qeniy sect21QOi~ sectpoundQttQlsO poundsOsggOi
164 87
2468
1000 1000 1000
140810 74698
2119025
39283 39460
840890
Mean number of organismssample 311 6 Standard deviation 101 1
ill b f 2nean nUll er 0 organIsms 2675398 Standard deviation 8682B8
W= 116 SD= 036 SR= 060 J= 039
A-42
STATION 18 Date 29 August 1984 Depth 30 bull Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samples 10
Total Frequency occurrence
Densi ty 2
(nom )
Taxa number (~ ) x S D
Nematoda 150 1000 128790 28905 Turbellaria 7 400 6010 9096 ~nh imni~Qj Oligochaeta ~~i~2Y~k~~1 ini~CIDgii bih2g~Qb~ Yi(~U2 Bivalvi a
B 145
1 1 2
600 1000
100 100 200
6869 124497
859 859
171 7
677 3 84732
271S 2715 3620
~Q[Qi~yli miDllgni bimn2pound~ih~C sp ~QtQehiY imQUia Harpacticoida
7 7
265 1
500 300
1000 100
6010 601 0
227529 859
8145 10747
139462 2715
sect~QtiQDi ~Q~Q~i~ Chironomid larvae
2471 2
1000 200
2121601 171 7
1063112 3620
Mean number of organismssample 3067 Standard deviation 121 9
2Mean number 0 f organIsms m 2633326 standard deviation 1046718
H = 1 09 SD= 034 SR= 1 04 J= 029
A-43
STATION 58 Date 29 August 1984 Depth 55 111
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (noI 2 ) Total occurrence -----------------
Taxa nUllber (X) X SD
Nemertea 4 400 3434 4434 Nuatoda 64 1000 54950 25016 Turbellaria 9 400 7727 11047 ~Hl~b limli~Q19 Oligochaeta
1 37
100 1000
859 31769
2715 19006
i~Qyh il(~~ bHtlQSlheln Yl Bivalvia
4 4
20
200 300 400
3434 3434
17172
8215 6003
26541 ~e(ijY l bQ~dlH sp
26 1
700 100
22324 859
25662 2715
~Q[QQhil iQ sectjgUell HD Heleidae larvae
418 20
1
1000 800 100
358895 17172
859
129443 12799 271 5
Mean number of organismssample 609 Standard deviation 175
nean num b er 0 f organIsms 1 111 2 522887 Standard deviation 150164
H= 176 SD= 051 SR= 1 30 J= 047
A-44
I I
I
I
STATION SS
Date 29 August 1984 Depth 21 1
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (no2) Total occurrence
Taxa nUllber (X) x S D
Nematoda ISO 1000 128790 37969 Turbellaria 1 100 859 271 5 Oligochaeta 48 1000 41213 16088 ~i~g~sect~~l iQ~~mgi bi~QQg~gb~sect ~i~nsect
10 14
600 600
eSB6 12020
9050 14137
Bivalvia 4 200 3434 7240 ~Q[Q~Yl niQaa Ostracoda
15 7
700 SOO
12879 6010
15806 7069
bmQg~~~b~ SPa 14 800 12020 8295 ~g[gaby mgni sect~g~~Qn ~ngnai Chironomid larvae
IB4 25 9
1000 900 700
157982 21465
7727
35563 16810 6335shy
Mean number of organismssample 481 Standard deviation B6
2Mean number 0 f organlsms m 412987 Standard deviation 74131
H= 24S SD= 074 SR= 1 23 J= 068
A-45
STATION 45 Date 14 September 1984 Depth 61 11
Salinity (bottom) 03 ppt Temperature (bottom) IB4 C No of samples 10
---------------------------------~----------------------------------------
Taxa TotalnUlllDer
Frequency occ~~~ence
Density (no 2) -----X-------sect7B
Nematoda 189 1000 162275 85233 t1tQ SPa
Turbellaria 2 2
200 100
171 7 171 7
3620 5430
~~~nIng limoifQl t1QQQDi~ flQriQ Oligochaeta
5 19
142
400 800
1000
4293 1631 3
121921
6071 12442 30504
~QQifYl mDl~D bimoQpoundt1hgr Spa Cumacea
19 184
2
800 1000 200
1631 3 157982
171 7
130B4 69541 3620
~Q[QnniYm ~~lmQDi Harpacticoida
118 1
1000 100
10131 5 B59
43367 2715
sectfQIIQD fOQgO Chironomid larvae
1780 1
1000 100
1528308 859
673586 2715
Mean number of organismssample 2464 Standard deviation 874
M ean num b er f 20 organlsms 2115590 Standard deviation 750305
H= 151 SD= 046 SR= 1 07 J= 041
A-46
STATION 18 Date 14 September 1984 Depth 21 III
Salinity (bottom) 01 ppt Temperature (botto) 182 C No of samples 10
Frequency DenSity (nom 2 ) Total occurrence ---------------- shy
Taxa nUlDber (i) X SD
Nemertea 1 100 859 271 5 Nematoda 186 1000 159700 44925 Turbellaria 16 400 13738 20717 ~~Dth~~ limni~Ql Oligochaeta
13 55
700 900
11162 47223
9096 30085
~Q~ei~Yl nil~Qi~ 17 900 14596 7069 bimDg~lbg[ Spa b 500 5152 6003 ~Q[Q2niY ~lgQi~ Harpacti coi da
562 2
1000 200
482533 171 7
136766 3620
sectpoundQttQ~Q~ ~n~ni 791 1000 679153 324290
Mean number of organismssample 1649 Standard deviation 447
I 211ean nUll ber 0 f organIsms I 1415831 Standard deviation 384136
H= 179 SD= 064 SR= 084 J= 054
A-47
STATION 58 Date 14 September 1984 Depth 58 III
Salinity (bottom) 01 ppt Temperature (bottom) 191 C No of sampl es 10
-------------------------------------------~------------------------------Frequency Density (nom 2 )
Total occurrence Taxa number eX) X SD
Nemertea 1 100 859 2715 Nematoda 55 1000 47223 18658 Turbellaria 10 500 8586 11448
1 100 859 2715 Oligochaeta 41 1000 35203 17850 ~~iQQ~~gll iu1g[m~i ~Q[Q~Yl nilD bimnQ~Y~h[ Spa ~Q[Q~hiYm lmgui sectpoundQilg1D poundU2D Chironomid larvae
4 10
2 277
23 4
100 500 200
1000 700 300
3434 8586 171 7
237832 19748 3434
10861 11448 3620
50561 21051 6003
Mean number of organismssample 428 Standard deviation 51
M b f 2ean num er 0 organIsms III 367481 Standard deviation 43743
H= 179 SD= 055 SR= 114 J= 052
A-48
I I
STATION SS Date 14 September 1984 Depth 21 II
Salinity (bottom) 01 ppt Temperature (bottom) 190 C No of samples 10
--------------------------------------------------------------------~-----
Frequency Density (no1I2) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 102 1000 87577 39200 Oligochaeta 34 700 29192 31142 ~iQ2Y~y1 int(mgi~ bithQgl~en~ Yi(gDsect ~Q(~i~Y m~DilgDsecti~ bimDQamp~1h(sect sp ~2(QQhiY slmQD 2poundQiiQlsD ~sD~g~nsecti Chironomid larvae
36 18 16 17
100 16
3
1000 600 800 700
1000 800 300
30910 15455 13738 14596 85860 13738 2576
157BO 20953 10078 14621 32126 10861 4147
Mean number of organismssample 342 Standard deviation 97
2Mean nUllber 0 f organlsms m 293641 Standard deviation 83617
H= 262 SD= 079 SR= 095 J= 083
A-49
Appendix B--Sediment particle size and organic content of the Cathlamet Bay
benthic invertebrate sites 13 March through 14 September
1984
iii
1
Station 18a 48 54 57
Survey 1 1 1 1
Month March March March March
Day 13 13 13 13
Particle size (mm) Phib Percent by weight
gt 40 -2 000 000 000
20- 40 -1 000 000 000
10- 20 0 000 009 000
05- 10 1 018 1079 032
025- 050 2 545 7583 2468
0125- 025 3 8731 1225 6783
00625-0125 4 491 037 657
lt0625 (5-12) 216 067 060
Organic Content 160 116 128
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
b Phi= -log2(sediment particle diameter in mm)
B-1
Station 18a 48 54 57
Survey 2 2 2 2
Month April April April April
Day 5 5 5 5
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 003 093 000
05shy 10 1 005 31 75 023
025shy 050 2 087 5904 2368
0125- 025 3 6316 750 7155
00625-0125 4 3056 026 427
lt0625 (5-12) 533 052 028
Organic Content 081 077 065
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-2
Station 45 55 58
Survey 3 3 3 3
Month April April April April
Day 18 18 18 18
Particle size (mm)
gt 40
Phi
-2
Percent by weight
000 000 000
20shy 40 -1 000 000 000
10shy 20 0 005 009 004
05shy 10 1 010 027 013
025shy 050 2 015 095 225
0125- 025 3 097 536 6111
00625-0125 4 453 2821 2205
lt0625 (5-12) 9420 6511 1442
Organic Content 31 42 14
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-3
Station 18a 45 55 58
Survey 4 4 4 4
Month May May May May
Day 4 4 4 4
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 021
05shy 10 1 000 065 063
025shy 050 2 012 370 230
0125- 025 3 091 4099 4696
00625-0125 4 322 3650 3052
lt0625 (5-12) 9575 1810 1939
Organic Content 330 180 160
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-4
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
5
May
17
000
000
005
016
217
5862
2729
1170
100
45 55 58
5 5 5
May May May
17 17 17
Percent by weight
000 000
000 000
005 008
113 031
325 274
1903 5613
2784 2401
4870 1672
240 110
000
000
000
010
020
079
397
9494
390
B-5
Station 18al 45 55 58
Survey 6 6 6 6
Month June June June June
Day 6 6 6 6
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 020
05shy 10 1 005 051 027
025shy 050 2 005 301 1 79
0125- 025 3 074 3189 5404
00625-0125 4 599 4118 2885
lt0625 (5-12) 9317 2332 1485
Organic Content 340 240 150
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-6
Station
Survey
Month
Day
Particle size Cmm) Phi
gt 40 -2
20shy 40 -1
10shy 20 a
05shy 10 1
025shy 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
7
June
18
000
000
005
029
138
3917
4143
1768
180
45
7
June
18
55 58
7 7
June June
18 18
Percent by weight
000
000
000
010
020
080
427
9464
310
000 000
000 000
000 007
011 022
057 190
957 5286
3023 2642
5957 1853
1 70 110
B-7
Station 18al 45 55 58
Survey 8 8 8 8
Month July July July July
Day 2 2 2 2
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 006 002 006
05shy 10 1 006 0l3 023
025shy 050 2 017 088 171
0125- 025 3 074 2712 5365
00625-0125 4 552 3892 3081
lt0625 (5-12) 9345 3294 l354
Organic Content 410 210 160
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-8
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
9
July
17
000
000
003
013
130
4294
4434
1127
130
45
9
July
17
Percent
000
000
000
006
012
051
046
9885
290
55
9
July
17
by weight
000
000
019
048
091
628
3616
5597
030
58
9
July
17
000
000
004
022
158
5017
3148
1650
140
B-9
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18al
10
August
1
45
10
August
1
55
10
August
1
58
10
August
1
Percent by weight
000 000
000 004
001 004
009 018
018 088
098 306
049 2510
9824 7070
000
005
045
763
3604
4495
932
156
100 190 060
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-10
Station 18 45 55 58
Survey 11 11 11 11
Month August August August August
Day 17 17 17 17
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000 000
20- 40 -1 005 000 000 000
10- 20 0 021 003 000 210
05- 10 1 064 009 000 159
025- 050 2 226 027 045 2656
0125- 025 3 3259 131 712 3719
00625-0125 4 4327 195 1737 1159
lt0625 (5-12) 2098 9635 7506 2097
Organic Content 210 300 160 100
Ii I
B-11
Station
Survey
Month
Day
Particle size (mm) Phi
gt40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
12
August
29
000
000
012
046
186
3465
4498
17 93
241
45
12
August
29
55 58
12 12
August August
29 29
Percent by weight
000
000
002
009
026
118
189
9656
540
000 000
000 000
003 011
011 028
055 1013
859 5033
1596 1827
7476 2089
1 70 120
B-12
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
_-------------------- shy
B-13
RESULTS
Physical and biological data are presented by station in Appendix A A
list of the benthic invertebrate taxa identified during the survey are
presented in Table 1 Appendix B presents the sediment analysis
DISCUSSION
Although the purpose of this study was to obtain base line information
prior to modification of the ship navigational channel caution must be used
in interpreting the data First the MOBILOIL oil spill on 19 March 1984
may have affected the local benthic invertebrate biota Oil started to
occur in the benthic samples on the third survey (18 April 1984) and
continued until the end of the study (14 September 1984) Al though some
stations had more oil than others effects on the invertebrates were not
obvious Secondly year to year variations in benthic invertebrate species
and densities occur in the marine environment (Gray and Christie 1983)
Whether the benthic infauna in Cathlamet Bay varies cyclically is unknown
The long term stability or cycles need to be determined before changes of
the benthic infauna can be attributed to any habitat modification or
dredging proj ect
Salinity is considered to be the most important factor controlling the
distribution of estuarine animals (Kinne 1966) Since we performed our data
collections primarily at low tide the given salinity values must be
considered low values Chapman and Brinkhurst (1981) showed that seasonal
variations of benthic invertebrates in the Fraser River estuary were
correl ated with salini ty One common freshwater oligochaete species in
their study Limnodrilus hoffmeisteri also occurs in Cathlamet Bay Adult
hoffmeisteri can tolerate salinities up to 10 ppt and immatures 14 to
7
Table 1--List of invertebrate taxa found at benthic invertebrate sites
located in Cathlamet Bay Oregon March through September 1984
Coelenterata Hydra sp
Turbellaria Nemertea Nematoda Nematomorpha Oligochaeta
Vejdovskyella intermedia Limnodrilus hoffmeisteri Ilydrilus frantzi
Polychaeta Neanthes limnicola Hobsonia florida Manyunkia speciosa
Gastropoda Lithoglyphys (=Fluminicola)
Bivalvia virens
Corbicula manilensis Ostracoda
Limnocythera sp Mysidacea
Neomysis mercedis Cumacea Amphipoda
Eogammarus spp Eogammarus confervicolus Corophium salmonis Corophium spinicorne Pontoporeia hoyi Eohaustorius estuaris
Isopoda Saduria entomon
Harpacticoida Scottolana canadensis
Insecta Diptera adult Diptera pupae Heleidae larvae Chironomidae larvae Chironomidae pupae Trichoptera larvae Hymenoptera Collembola
Hydracarina
Occurrence not quantified
8
15 ppt (Chapman and Brinkhurst 1980) This species appears to be a useful
salinity indicator and future benthic work should identify and enumerate
this species Due to time and taxonomic expertise requirements only the
oligochaete species Vejdovskyella intermedia was enumerated Salinity
tolerances of this species are unknown
Since intersti tial salinities do not vary dielly as do salini ties in
the water column (Sanders et al 1965) interstitial salinities should have
been measured Al though many infauna species may be exposed to overlying
water because of activity andor tubes (exCorophium spp) many benthic
invertebrates are dependent on interstitial salinity levels Measurements
of interstitial salinities are necesssary to determine benthic infauna
sensitivity to salinity intrusion
Finally there appeared to be a large amount of within station
variability in the sediment texture particularly at Stations 55 and 58
The sediment at Station 55 ranged from a very fine sand to almost all clay
The sediment texture variability at Station 58 was a result of the uS
Coast Guard moving Can 5 to a new location forcing us to estimate the
previous location of our station
ACKNOWLEDGMENTS
We wish to thank Maurice Laird Nick Zorich Larry Davis Roy Pettit
Edward Koller and David Miller for their assistance in developing the
sampling device and collecting the samples We express special thanks to
Sandy Lipovsky Thomas Moylan and Susan Newhouse for helping sort and
identify the invertebrates
9
LITERATURE CITED
Chapman P M and R O Brinkhurst
1980 Salinity tolerance of some selected aquatic oligochaetes Internat
Rev der Gesamten Hydrobio1gie 65499-505
Chapman P M and R O Brinkhurst
1981 Seasonal changes in interstitial salinities and seasonal movements
of subtidal benthic invertebrates in the Fraser River estuary BC Est
Coast Shelf Sci 1249-66
Gray J S and H Christie
1983 Predicting long-term changes in marine benthic communities Mar
Ecol Prog Sere 1387-94
Kinne O
1966 Physiological aspects of animal life in estuaries with special
reference to salinity Neth J of Sea Res 3 227-244
Margalef R
1958 Information theory in ecology Gen Syst 336-71
McCabe G T Jr W D Muir R L Emmett and J T Durkin
1983 Interrelationships between juvenile sa1monids and nonsalmonid fish
in thl Columbia River estuary Fish Bu11U S 81(4)815-826
Pie10u E L
1966 The measurement of diversity in different types of biological
collections J Theor BioI 13131-144
Sanders H L P C Mange1sdorf and G R Hampson
1965 Salinity and faunal distribution in the Pocasset River
Massachusetts Limno Ocean 10216-229
Shannon L E and W Weaver
1963 The mathematical theory of communication Univ of Illinois Press
Urbana Ill
10
Simpson E H
1949 Measurement of diversity Nature 163688
11
APPENDIX A--Descriptive summary of benthic invertebrate data collected in
Cathlamet Bay Oregon during March through September 1984
STATION 18 Date 13 March 1984 Depth 46 m Salinity (bottom) 11 ppt Temperature (bottom) 67 C No of samples 15
Frequency Density (nom 2 ) Total occurrence
Taxa number (7) X SD
Nemertea 2 67 1145 4434 Nematoda 134 1000 76702 33169 Turbellaria 22 667 12593 15854 ~~n~b~~ imnpoundQ 31 Oligochaeta 486
933 17744 1468 1 100() 278186 138779
~QtQif~12 mnil~nsectisect 24 Ostracoda 39
933 13738 8462 800 22324 17715
~Q[QQbiYm ~lmQni~ 74 867 42358 38B70 EQntQIH~i2 Qyi 1 EQri gnQQn 1 Harpacticoida 7
67 572 2217 67 572 221 7
333 4007 7159 Insecta 2 67 1145 4434 Chironomid larvae 20 667 1144 B 10090 Collembola 95 867 54378 82588 Hydracarina 1 67 572 221 7
Mean number of organismssample 626 Standard deviation 19 1
M ean num b er 0 f 2organIsms III 537484 Standard deviation 163579
H= 237 so= 069 SR= 1 42 J= 061
A-l
STATION 48 Date 13 March 1984 Depth 107 m Salinity (bottom) 05 ppt Temperature (bottom) bB C No of sampl es 15
Frequency Densi ty (nom 2 ) Total occurrence
Taxa number (7) X SD
Nemertea 31 6b7 17744 1849 1 Nematoda 38 667 21751 22685 Oligochaeta 4 133 2290 6859 ~QQpound12 2nil~nsectisect 31 Ostracoda 1
667 17744 29648 67 572 221 7
~Q9~~[~ spp 1 ~Q[Q2l ~~lQnisect 1 ~Q2sectiQisect sectisect 4 Harpacticoida 1
67 572 2217 67 572 221 7
200 2290 5097 67 572 221 7
Insecta 2 133 1145 3021 Diptera adult 1 67 572 2217 Collembola 24 467 13738 30923
Mean number of organismssample 93 Standard deviation 59
Mean number of organismsm2 795b4 Standard deviation 50740
H= 255 SD= 079 SR= 1 55 J= 071
A-2
STATION 54 Date 14 March 1984 Depth 177 m Salinity (bottom) 00 ppt Temperature (bottom) 66 C No of samples 15
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nemertea 47 1000 26903 14096 Nematoda 7 267 4007 9102 Turbellaria 9 333 5152 1114B Oligochaeta 11 333 6296 10989 Gastropoda 1 67 572 2217 ~Q(Qi~Yl mnil~n2i~ Ostracoda
199 3
1000 200
11390B 171 7
97165 3555
gQ[Qehiy sectlmQnisect Harpacticoida
3 1
200 67
171 7 572
3555 221 7
Heleidae larvae 29 867 16600 10989 Chironomid larvae 2 133 1145 3021 Collembola 2 67 1145 4434
Mean number of organismssample 209 Standard deviation 103
2Mean number 0 f organIsms m 179734 Standard deviation 88247
H = 1 86 SD= 056 SR= 1 33 J= 052
A-3
STATION 57 Date 13 March 1984 Depth 91 m Salinity (bottom) 00 ppt Temperature (bottom) 63 C No of sampl es 15
Frequency Densi ty (no 81 2) Total occurrence
Taxa number (X) X SD
Nemertea 27 667 15455 13459 Nematoda 8 400 4579 6381 Turbellaria 4 200 2290 5097 Oligochaeta 8 400 4579 6381 ~g[gipound~l mnilui Ostracoda
1 1
67 67
572 572
2217 2217
~Qgml[a spp 1 67 572 2217 ~Q[Qeni~m lmQnisect Harpacticoida
2 1
133 67
1145 572
3021 221 7
Insecta 3 67 171 7 b651 Chironomid larvae 1 b7 572 221 7 Collembola 37 400 21179 65700 Hydracarina 1 67 572 221 7
Mean number of organismssample 63 Standard deviation 82
Mean number of organismsm2 54378 Standard deviation 70029
H= 253 SD= 075 SR= 1 83 J= 068
A-4
STATION 18 Date 5 April 1984 Depth 30 II
Salinity (bottoll) 00 ppt Temperature (bottom) 90 C No of samples 15
Frequency Densi ty (no1I 2) Total occurrence
Taxa number (i ) If S D
Nemertea 11 bOO 6296 6042 Nematomorpha 2 133 1145 3021 Nuatoda 119 1000 6811 6 50947 Turbellaria 20 600 11448 13640 ~~~nin~sect liIDni~Q12 Oligochaeta
33 481
1000 1000
18889 275324
10364 142326
~Q~Qi~Yl m2nil~ni2 23 600 13165 1371 7 Ostracoda 33 933 18889 10861 gQ(QQrriYID sect2mQnisectHarpacti coi da
38 7
933 133
21751 4007
13329 13328
Chironomid larvae 16 667 9158 8868 ColI embola 1 67 572 2217
Mean number of organismssample 523 Standard deviation 227
M b f 2ean num er 0 organIsms m 448762 Standard deviation 194508
H= 202 SD= 059 SR= 114 J= 0S6
A-5
STATION 45 Date 18 April 1984 Depth 64 III
Salinity (bottom) 00 ppt Temperature (bottom) 95 C No of samples 15
Total Frequency occurrence
Density (noI 2 )
Taxa number (X) X SD
Nematoda 171 1000 97890 92277 tyg~ sp Turbellaria
1 29
67 600
572 16600
221 7 23506
H~nng~ imDi~g tQQsectQl fg~ig Oligochaeta ~Q[Qi~Y2 m2niD~i Ostracodamiddot
9 41
367 42
100
400 1000 1000 800
1000
5152 23469
210071 24041 57240
781 5 13563
100542 19254 43134
~Q[Qeniym amQnisectHarpacticoida Heleidae larvae
37 2049
1
933 1000
67
21179 117284B
572
189B5 616612
221 7 Chironomid larvae 3 200 171 7 3555 Collembola 1 67 572 221 7 Insect parts 1 67 572 221 7
Mean number of organismssample 1901 Standard deviation 864
b f 2nean num er 0 organIsms m 1632485 Standard deviation 741931
H = 1 52 SD= 046 SR= 1 13 J= 040
A-6
STATION 18 Date 18 April 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom) No of samples 15
Frequency Density (nom2) Total occurrence
Taxa nueber (X) x s D
Nemertea 13 533 7441 9663 Nematomorpha 3 200 171 7 3555 Nematoda 195 1000 111618 63675 Turbell ari a 9 467 5152 6326 ~~ni~~ i~ni~Ql~ 30 867 17172 129B1 Oligochaeta 580 1000 331992 108880 ~QC~i~Ml~ m~nil~n~isectOstracoda
28 18
1000 667
16027 10303
11179 10364
~Q[Q~~iYm sect~Qni2 sect~ci~ gniQQnHarpacticoida
105 1
17
1000 67
400
60102 572
9731
25553 2217
19970 Chironollid larvae 16 667 9158 8B6B
Hean number of organismssample 677 Standard deviation 199
M ean num b I 2er 0 f organIsms AI 580986 Standard deviation 171095
w = 202 SD= 062 SR= 1 10 J= 056
95 C
A-7
STATION 58 Date 18 April 1984 Depth 67 m Salinity (bottom) 00 ppt Temperature (botto) No of samples 15
Frequency Density (nom2) Total occurrence
Taxa number (~) X SD
Nemertea 62 933 35489 26338 Nematoda 224 1000 128218 49903 Turbellaria 9 600 5152 4354 ~nt~sect imni~Q Oligochaeta
1 79
67 1000
572 45220
2217 23506
bnQgYRhY~ Yi~~nE ~Q(~i~Y nil~ni Ostracoda
2 10 19
67 533 600
1145 5724
10876
4434 6214
10989 ~Q[QeniY sectQOiHarpacticoida
30 2
B67 133
17172 1145
12142 3021
Heleidae larvae 6 333 3434 5430 Chironomid larvae 9 400 5152 7B1 5 Chironomid pupae 2 133 1145 3021
Mean number of organismssample 303 Standard deviation 94
I 11 ean num ber 0 f organlsms 2 260442 Standard deviation 81043
H= 233 SO= 070 SR= 1 36 J= 063
97 C
A-B
Frequency Density (nolm 2) Total occurrence -----------------
Taxa number (7) X SD
Nemertea 16 467 9158 10989 Nematoda 266 1000 152258 54541 Turbellaria 23 600 13165 15518 ~l~nH ~Q~iQH 2 133 1145 3021 Oligochaeta 181 1000 103604 56532 bi~hQg~Qn~~ ~it~l~ ~QtQifg mli~lsectisectOstracoda
3 59 15
200 1000 733
1717 33772 8586
3555 23054
7256 ~Q[QQhiY HmQtlsect ~Q[QehiYm sect21tlfQ[lg EQlQQQt~i hQ~i
466 3 1
1000 200 67
266738 171 7 572
75094 3555 221 7
Harpacticoida 30 400 17172 40402 Chironomid larvae 10 533 5724 6214
Mean number of organismssa_pIe 717 Standard deviation 143
I 2Mean number 0 f organlsms m 615330 Standard deviation 122532
H= 226 SO= 072 SR= 119 J= 061
STATION 55 Date 18 April 1984 Depth 30 1ft
Salinity (bottom) 00 ppt Temperature (bottom) 93 C No of SaIIples 15
A-9
STATION 45 Date 4 Hay 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 103 C No of samples 10
Frequency Density (noI2) Total occurrence ---------------- shy
Taxa number (Xl X SD
Neutoda 269 1000 230963 167296 Turbellaria 1 100 859 2715 ~u~yuti Q~iQ ~Ub imni~Q
1 2
100 100
859 171 7
2715 5430
j2~Qn flec Oligochaeta
28 169
BOO 1000
24041 145103
19326 74351
~igeYk~ll iulCIDai ~Q(Qi~Y uini Ostracoda
32 4 5
aoo 400
400
27475 3434 4293
22463 4434 6071
biQQ~~tbt sp ~e(QQbYm mQoi sectampQeD ~nQDisect Chironomid larvae
25 2
578 2
900 200
1000 200
21465 1717
496271 171 7
15279 3620
293820 3620
Mean number of organismssample 111 8 Standard deviation 522
11 b f I 2ean num er 0 organIsms m 95991 5 Standard deviation 447842
H= 193 SD= 065 SR= 118 J= 052
A-10
STATION 18 Date 4 Hay 1984 Depth 34 II
Salinity (bottom) 00 ppt Temperature (bottom) 104 C No of saMples 10
Frequency Density (noI 2 ) occurrence ----------------shy
Taxa (X) X SD
Nemertea 10 600 8SB6 10709 Nuatoda 153 1000 131366 47899 Turbellaria 8 600 6869 6773 ~n1b limnpoundQl Oligochaeta
11 147
700 1000
middot9445 126214
9449 6231 7
~i~g~kXl in1(m~i ~g(2iY OiOi Ostracoda
86 4 1
900 300 100
73840 3434 859
61543 6003 2715
bimoQpoundx1b( sp ~2(QQbiYm mgoiDi ptera adult
3 57
3
300 900 300
2576 48940
2576
4147 21815 4147
Chironomid larvae 4 300 3434 6003 Chironomid pupae 1 100 859 2715
Hean nUMber of orQanismssample 489 Standard deviation 160
b f 2nean nUll er 0 organIsms II 418997 Standard deviation 137721
H= 243 SD= 076 SR= 1 34 J= 066
A-l1
STATION 5B Date 4 Hay 1984 Depth 61 bull Salinity (botto~) 00 ppt Temperature (bottom) 110 C No of suples 10
Frequency Density (nom 2) Total occurrence ---------------- shy
Taxa number (X) X SD
Neertn 41 1000 35203 21206 Nematoda 211 1000 181165 53305 Turbellaria 4 200 3434 7240 Oligochaeta 89 1000 76415 32240 ~i~2~~~11~ iU1(~i~bi1begygny YitQ ~e(biYl ~OiDi OstracDda
4 3
20 1
400 200 BOO 100
3434 2576
17172 859
4434 5795
19829 2715
biue~1bt~ sp ~2(egniY Imeoi sectg11g1O OdD Helei dae larvae
5 32
1 1
400 900 100 100
4293 27475
859 859
6071 18010 2715 2715
Chironomid larvae 7 400 6010 9096
Mean number of organismssample 419 Standard deviation 93
b f 2ean nUll er 0 organIsms m 359753 Standard deviation 79875
H= 221 SD= 068 SR= 138 J= 060
A-12
Frequency Density (nolm 2) occurrence -----------------
Taxa (X) X SD
Nemertea 23 900 1974S 15171 Neutollorpha 1 100 859 271 5 Nellatoda 269 1000 230963 69923 Turbellaria 10 600 8586 991 4 ~~xYnki Q~ampiQ 4 300 3434 6003 ~nb limnipoundQl Oligochaeta
1 79
100 1000
859 67829
2715 40363
~i~Q~kXl io[~i biDe9XQDX ~i[~OBi valvi a
11 3 1
800 300 100
9445 2576 859
6335 4147 271 5
~Q[~poundY mnil~n bimoQampXD[ sp ~Q[QabiY lQO Harpacticoida
18 2
159 1
700 200
1000 100
15455 171 7
135659 859
13904 3620
54272 2715
Chironomid larvae 2 200 171 7 3620 Trichoptera larvae 1 100 859 2715
STATION 55 Date 4 May 1984 Depth 21 m Salinity (bottom) 00 ppt Temperature (bottom) 107 C No of suples 10
Mean number of organismssamples 594 Standard deviation 147
Mean number of organismsm2 501422 Standard deviation 126525
H= 219 aD= 069 SR= 1 63 J= 055
A-13
STATION 45 Date 17 May 1984 Depth 61 m Sal i ni ty (bottom) 01 ppt Temperature (bottom) 121 C No of sampl es 10
Frequency Total occurrence
Taxa nUlllber (7)
NelDertea 1 100 859 2715 Nematoda 163 1000 139952 127996 Polychaeta 1 100 859 2715 ~~~n~h~ imni~Qs Hobsonia florida
2 6
200 600
171 7 5152
3620 4434
Oligochaeta 329 1000 282479 13291 8 ~~lQQYsectk~~12 in~~rmQi 57 900 48940 33142 ~Qr~ipound~2 ffi2niDi 6 500 5152 6003 Ostracoda 5 200 4293 10898 bimDg~yth( SPa 13 600 11162 12176 ~Q(Qebi~m sectQDisect Harpacticaida
2 2
200 100
1717 1717
3620 5430
2poundQttQD poundDQDsectisectDiptera adult
296 1
1000 100
254146 859
172633 271 5
Mean number of organismssample 884 Standard deviation 326
b f I 2nean num er 0 organlss m 759002 Standard deviation 280131
H= 209 SD= 071 SR= 1 33 J= 055
A-14
STATION 18 Date 17 May 1984 Depth 30 m Salinity (bottom) 00 ppt Temperature (bottom) 122 C No of samples 12
Frequency Density (nom2) Total occurrence -----------------
Taxa number (X) X SD
Nematoda 50 833 35775 22815 ~ntb limnipoundQl 3 Oligochaeta 97
250 833
2147 69404
3883 48495
~igQ~~k~ intr~ 27 ~QrQipoundY mnin~i~ 5
667 333
19319 3S7S
19068 5740
Ostracoda 1 83 716 2479 bimnQpound~nr sp 5 ~Q(Q~bY ~mQni S4 ~Q(Q~niY ~QinipoundQ(n 3
333 833 250
3578 60102
2147
5740 43780 3883
fgnQ2Q(i bQ~i 1 sectpoundQtgO poundnQn~i 2 Chironomid larvae 4
83 167 250
716 1431 2862
2479 3342 5592
Mean number of organismssample 235 Standard deviation 116
nean nURl b er 0 f organlslls II 2 201771 Standard devi ati on 99221
H= 236 SD= 075 SR= 1 35 J= 066
A-15
STATION 58 Date 17 May 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) 123 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nemertea 2 100 171 7 5430 Nematoda 75 1000 64395 34404 ~~2Qih~a limQi~Q 2 200 171 7 3620 Oligochaeta 60 1000 51516 33376 ~~igQY~~~12 iQ~[~~gi 2 200 171 7 3620 bitQQ9~Bh~sect Yr~Qsect 3 200 2576 579~
gQ[Qi~Yl ID2Dil~nsectisect Ostracoda
6 6
500 400
5152 5152
6003 8295
binQ~~nr[ sp gg[QQOYm mQQsect sect~QttQn 5n2Q~nsectia Chironomid larvae
2 34
1 1
200 1000
100 100
171 7 29192
859 859
3620 12927 271 5 2715
Mean number of organismssample 194 Standard deviation
2Mean nurn ber 0 f organIsms fA 166568 Standard deviation 56259
H= 225 SD= 072 SR= 1 45 J= 063
A-16
66
STATION 55 Date 17 May 1984 Depth 24 II
Salinity (bottom) 00 ppt Telllperature (bottom) 126 C No of samples 10
Total Frequency occurrence
Taxa nUllber (X) X SD --------------------------------------------------------------~-----------
Nematollorpha 2 200 171 7 3620 Nematoda 63 1000 54092 35297 Oligochaeta 94 1000 80708 44004 ~~iQQY~k~~l iQt~(m~Qi bitnQg~Qh~~ Yi[~Q gQ[QipoundY~ mni~Q~i Ostracoda
10 9 4 2
600 800 300 100
8586 7727 3434 171 7
9050 4874 6003 5430
bimnQ~~ln~[e sp ~Q(QQbiYm mQD ~Q[QQbiYm 2inipoundQ[n~ Chironomid larvae
6 142
3 1
600 1000 200 100
5152 121921
2576 859
4434 50682 5795 2715
Mean number of organismssample 336 Standard deviation 62
2Mean num ber 0 f organisms m 288490 Standard deviation 53421
H= 214 SD= 071 SR= 119 J= 062
A-17
STATION 45 Date 1 June 1984 Depth 61 m Salinity (bottom) 01 ppt Temperature (bottom) 139 C No of samples 10
Total Frequency occurrence
Density (no2)
Taxa nUllber (1) X SD
Nematoda 174 900 149396 132347 Turbellaria 5 200 4293 10898 ~~~QiQ~sect tmQtpoundQ~ ~QQsectQ flQi~sect Oligochaeta ~~iQQysecttygl~ iQl~rm~~i2 ~Q[Qi~~l~ ~~DilgDsectisect Ostracoda
5 20
190 103
12 5
400 900
1000 900
60 (I 400
4293 17172
163134 88436 10303 4293
6071 8095
92563 51524 11304 6071
bimnQpoundytng[ sp ~gQmYsectisect IDg[pound~Qisect ~Q[QQhi~m sectlmQDisect sectpoundQtiQlsectQ pound~Qgsectisect ChironQmid larvae
33 1
10 375
2
900 100 700
1000 200
28334 859
8586 321975
171 7
17196 2715 7010
179201 3620
Mean number of organismssample 935 Standard deviation 254
nurn b 0 f 2lean er organlsms m 802791 Standard deviation 218423
H= 239 SD= 075 SR= 1 22 J= 065
A-18
STATION 18 Date 1 June 1984 Depth 30 AI
Salinity (bottom) 00 ppt Temperature (bottom) 134 C No of samples 11
Frequency Density (no 1m2)
Taxa Total number
occurrence (X)
---------------- shyX SD
Turbellaria 14 636 10928 1157 7 ~~~Qltlg~ ilipoundQ~ Oligochaeta
10 178
727 1000
7805 138937
601 6 67913
~~iQQy~tY~l~ ill~[m~Qi~ 122 636 95227 93619 ~Q[Qipound~ l~i~lsectisect Ostracoda
7 1
455 9 1
5464 78 1
6946 2589
billQylhg[ Spa 16 818 12489 10420 GQ[QQQil HQi~ 139 1000 108496 70934 gQ[Qebi secteiifQ[~ sectQiiQi2 ~Q~sectisect Diptera pupae
1 2 1
9 1 182
11 1
781 1561 781
2589 3473 2589
Chironomid larvae 2 182 1561 3473
Mean number of organismssample 714 Standard deviation 284
nean num b er 0 f organlsms m 2 612728 Standard deviation 244249
H= 232 SD= 075 SR= 1 25 J= 063
A-19
STATION 58 Date 1 June 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 138 C No of samples 10
Frequency Density (noI 2 ) Total occurrence
Taxa number (X) X SD
Nematoda 173 1000 148538 47383 Turbellaria 3 300 2576 4147 Oligochaeta 53 1000 45506 32139 ~giQgY2k~g~ ini~[m~Qi~ bQg91YehY2 Yi[~nsect ~Qr~i~Yl m~nl~n~i
26 1
10
600 100 500
22324 859
8586
3391 2 2715
13424 bimnQpound~Q~[ sp ~Q9~m[Y poundgnitYpoundQlysect ~QtQehiYm ~lQni
4 1
46
200 100
1000
3434 859
39496
8295 2715
22243 Chironomid larvae 1 100 859 271 5
Mean number of organismssample 318 standard deviation 103
M b f I 2ean num er 0 organlsms III 273035 Standard deviation 88842
H = 1 99 SD= 065 SR= 1 08 J= 060
A-20
STATION 55 Date 1 June 1984 Depth 27 m Salinity (bottom) 00 ppt Temp era t u r e (b 0 t tom) 140 C No of samples 10
Frequency Density (nom 2 ) Total occurrence
Taxa nueber (X) X SD
Nematoda 157 1000 134800 69524 Turbellaria 9 400 7727 13696 tlHl~lk ~2~~iQH 1 100 859 2715 Oligochaeta 49 1000 42071 32745 ~~iQQysect~gl~ S[l9sect bHbQghQb~~ Yirl~
10 1
400 100
8586 859
12799 2715
tQ[Qpoundls l2lilUsect bilQHSbg[ sp ~QrQQbil nllQisectHarpacticoida
4 7
134 1
400 500
1000 100
3434 6010
115052 859
4434 7069
44742 271 5
sectpoundQUQlls poundsQgn~sect Chironomid larvae
1 1
100 100
859 859
271 5 2715
Hydracarina 1 100 859 2715
Hean number of organismssample 376 Standard deviation 132
M b f 2ean num er 0 organIsms m 322834 Standard deviation 113127
H= 202 SD= 068 SR= 1 40 J= 055
A-21
STATION 45 Date 18 June 1984 Depth 67 m Salinity (bottom) 01 ppt Temperature (bottom) 149 C No of samples 10
Frequency Density (nom2)
Taxa Total nUllber
occurrence ex) i SD
Nematoda 109 1000 93587 3891 7 Turbell ari a 3 200 2576 5795 ~g~tbg limoipoundQl Q~Qni2 fQ(i~2 Oligochaeta ~gigQ~~Y inl[ggi ~Q[QiSY2 moilo Ostracoda
3 2
194 44
7 3
200 200
1000 1000 200 200
2576 171 7
16656B 37778 6010 2576
5795 3620
118364 36020 12831 5795
bimoQampl~n~[2 sp ~Q[QQbiYm lmgoi Harpacticoida sectpoundQQ1202 pound2022Osect Chironomid larvae
68 1 1
113 2
900 100 100
1000 200
58385 859 859
97022 171 7
97627 2715 2715
73976 3620
Mean number of organismssa_pie 550 Standard deviation 371
Mean nUll ber 0 f organIsms 2II 472230 Standard deviation 318519
H= 242 SD= 077 SR= 1 32 Ja 065
A-22
STATION 18 Date 18 June 1984 Depth 34 m Salinity (bottom) 00 ppt Temperature (bottom) 155 C No of samples 10
Frequency Density (nom 2) Total occurrence ----------------shy
Taxa nUlber (Z) X SD
Neutoda 291 1000 249853 138826 Turbellaria 1 100 859 2715 ~~n~~nki~ sectQ~~iQ~2 ~g~ntbg2 limni~Q9 Oligochaeta
1 3
123
100 300
1000
859 2576
105608
271 5 4147
48240 ~~igQY~~~~9 int~(mgii ~Q[~i~~~ mini~ni bimnQ~ylbg(~ Spa
67 6 5
1000 500 400
57526 5152 4293
40485 6003 6071
~Q(QebiYm ~imQnisect Harpacticoida
80 2
1000 200
68688 171 7
41276 3620
sect~QttQini ~2nig~n~i Chironomid larvae
2 4
200 300
171 7 3434
3620 6003
Mean number of organismssample 585 Standard deviation 194
I 2Mean urn b er 0 f organIsms m 502281 Standard deviation 166943
H= 203 SD= 068 SR= 1 20 J= 057
A-23
STATI ON 58 Date 18 June 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (noI 2) Total occurrence
TaKa number (X) X SD
Nellertea 2 100 1717 5430 Nematoda 160 1000 137376 6361 1 Turbellaria 4 400 3434 4434 Oligochaeta 36 1000 3091 0 14705 ~iQQYik~ Q1rQ 4 300 3434 6003 bitnQgl~ebysect YrDsect ~Q[QiY~ ~~nni biQQpoundY1h[ sp ~Q[Qeng ~ilQD Chironomid larvae
3 1 3
61 1
300 100 300
1000 100
2576 859
2576 52375
859
4147 2715 4147
1428 1 2715
Chironollid pupae 1 100 859 271 5
Mean number of organismssample 276 standard deviation 72
nean nurn b er 0 f organIsms I 2 236974 Standard deviation 61410
H = 1 78 SD= 060 SR= 1 23 J= 051
A-24
STATION 55 Date 18 June 1984 Depth 18 m Salinity (bottom)1 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (no 1m2) occurrence
Taxa (X) X SD
Nematoda 160 1000 137376 43967 Turbellaria 1 100 859 271 5 Oligochaeta 61 1000 52375 31985 ~~iQQY~kY~~ int~[mQi~ ~Q[Qipound~l~ m~nini~ biIDnQ~Ylb[s sp
3 3 3
300 300 300
2576 2576 2576
4147 4147 4147
~Q[Q~bi~ ~slIDQni~ Chironomid larvae
85 6
1000 600
72981 5152
34165 4434
Mean number of organismssample 322 Standard deviation 75
2Mean number 0 f organIsms m 276469 Standard deviation 64099
H= 178 5D= 065 SR= 0B4 J= 059
A-25
Frequency Density (no2) occurrence -----------------
Taxa (7) X SD
Nematoda 104 1000 89294 47409 Turbell ar i a 1 100 859 2715 ~~~nQ~sect imni~Q~ tjQQsectQlis flQig~ Oligochaeta
2 1
297
100 100
1000
171 7 859
255004
5430 271 5
146273 ~~i~QYsect~Y~lls ilr2is gQrQi~y~ IDDilDia
24 4
600 300
20606 3434
27212 6003
Ostracoda 2 200 171 7 3620 biDQSy~b~C~ sp M~QYsectisect m~r~~Qi ~QrQeniy QD Harpacticoida
157 1 1 1
900 100 100 100
134800 859 859 859
73197 2715 2715 2715
sectpoundQttQDs SsDQD 113 900 97022 61656
STATION 45 Date 2 July 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) No of samples 10
172 C
Mean number of organismssample 708 Standard deviation 339
M ean num b er f 20 organisms 607889 Standard deviation 290B22
H= 216 SD= 073 SR= 1 27 J= 058
1-26
STATION 18 Date 2 July 1984 Depth 24 WI
Sal inity (bottom) 00 ppt Temperature (bottom) 172 C No of samples 10
--------------------------------~-----------------------------------------Frequency Density (nom2)
Total occurrence Taxa number (7) X SD
Nematoda 202 1000 173437 113532 ~~~nih~sect mnpoundQ~ Oligochleta
4 102
400 1000
3434 87577
4434 54873
~~igQYsect~Y~12 inl~rmgi2 ~Q[~poundYl~ m~ni~nsectisect bimnQpoundylh~[~ Spa
115 4
15
900 300 900
98739 3434
12879
100720 6003 9274
~Q[QQniY~ sect~QDi~ 55 900 47223 40525 Harpacticoida 1 100 859 2715 sectpoundQiiQlD SDg~DEisect Chironomid larvae
2 6
200 400
1717 5152
3620 7240
Hymenoptera 1 100 859 2715 Hydracarina 1 100 859 2715
Mean number of organismssample 508 Standard deviation 253
2Mean num ber 0 f organIsms m 436169 Standard deviation 217580
H= 225 SD= 074 SR= 1 22 J= 063
A-27
STATION 58 Date 2 July 1984 Depth 58 1
Salinity (bottom) 00 ppt Temperature (bottom) IBO C No of samples 10
Frequency Density (no2) Total occurrence
Taxa number ltX) i SD
Nematoda 151 1000 129649 42729 Turbellaria 1 100 859 2715 01 i gochaeta 41 1000 35203 22698 ~~i~e~~~ int~~m~~ 3 200 2576 5795 btbQglYRhY~ Yir~n~ ~e~~ampy mni~niii bimQeamp~tb~ sp ~e~eQhiY ~mQni Chironomid larvae
1 4 2
68 1
100 300 200
1000 100
859 3434 171 7
58385 859
271 5 6003 3620
1557 1 2715
Mean number of organisassample 272 Standard deviation
I 2Mean num ber 0 f organIsms I 233539 Standard deviation 62546
H = 1 69 SD= 061 SR= 099 J= 053
A-28
73
STATION 55 Date 2 July 1984 Depth 15 III
Salinity (bottom) 00 ppt Temperature (bottom) 182 C No of samples 10
Frequency Density (nom2) occurrence
Taxa (X) X SD
Nematoda 184 1()00 157982 5264B Turbellaria 1 100 859 271 5 Oligochaeta ~~iQQ~sect~Y~ll~ n~[~~Qi~ bitnggYQDYsect Yi[~nsect ~QrQipoundM2 m2ni~nsectisect bimnQpoundYn~[2 sp ~QrQQhiM Qni Harpacticoida
91 2 1 B 2
96 2
1000 200 100 500 200
1000 200
78133 171 7 859
6869 171 7
82426 1111
26058 3620 271 5 1890 3620shy
25980 3620
ChirDnomid larvae 5 400 4293 6071 Chironolllid pupae 1 100 859 2715
Mean number of organismssample 393 Standard deviation 53
2t1ean nUllber Df organlsms III 337430 Standard deviatiDn 45080
H= 187 SD= 067 SR= 116 J= 054
A-29
STATION 45 Date 17 Jul y 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (X) X SD
Nematoda 215 1000 184599 45837 ~~n~b~~ imDipoundQ Qe~Qni fllHi2
3 1
300 100
2576 859
4147 2715
Oligochaeta 305 1000 261873 147955 ~~iQQY~k~ in~rm~2i ~Qr~ipoundYl IDniln~i~ Ostracoda
17 1 2
500 100 200
14590 859
171 7
22554 2715 3620
bmnQpound~ihr sp ~QCQQhiY ~lQD~
176 1
1000 100
151114 859
57125 2715
Harpacticoida 4 300 3434 6003 sectQ~~Qn poundnQnai~ Chironomid larvae
91 5
1000 400
78133 4293
61310 6071
Mean number of organismssample 821 Standard deviation 275
M b f 2ean num er 0 organlsms m 70491 1 Standard deviation 236369
H= 215 SD= 073 SR= 114 J= 060
A-30
STATION 18 Date 17 Jul y 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom 203 C No of samples 10
Frequency Density (001 2 Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 339 1000 291065 119140 Turbellaria 3 200 2576 5795 ~~2~b~~ limnipoundQ12Oligochaeta
4 18S
300 1000
3434 161417
6003 89393
~~iQQy~~~ls in~(ID~Qi bim~Qampy~bg(2 Spa
34 16
800 700
29192 1373B
22967 15252
~g(gebi~m ~21mQni2 Harpacticoida
52 3
1000 200
44647 2576
25212 5795
2ampQ11Q1202 ampS02Qg~2i2 Chironomid larvae
18 10
700 700
15455 8586
13904 701 0
Mean number of organi$mssample 667 Standard deviation IBB
H ean nurn b er 1 20 f organIsms m 572686 Standard deviation 161750
H = 1 99 SD= 065 SR= 090 J= 060
A-31
STATION 58 Date 17 July 1984 Depth 55 AI
Salinity (bottom) 00 ppt Temperature (bottom) 197 C No of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nellatoda 173 1000 14853B 66390 Turbellaria 1 100 859 271 5 ~~~n~hu ini~QA Oligochaeta
1 46
100 1000
859 39496
2715 26293
~gipoundQy~~ygl2 in~rJg~i~ b1nQglYRnY~ Yi( Bivalvia
6 2 1
400 200 100
5152 1717 859
8295 3620 271 5
ei~ IDnH~n~i~ 2 200 171 7 3620 Ostracoda 1 100 959 271 5 biIDQHlh~( Spa ~Q(QRbim ~21Qnisect Diptera pupae
1 94
1
100 1000 100
859 80708
859
2715 35332 2715
Heleidae 1arvae 5 500 4293 4525 Chironomid larvae 1 100 859 2715
Mean number of organismssample 335 Standard deviatiDn 113
Mean number of organismsRI2 287631 Standard deviation 97413
H= 1 86 SO= 064 SR= 155 J= 049
A-32
STATION 55 Date 17 July 1984 Depth 18 m Sali nity (bottom) 00 ppt TeAlperature (bottom) 199 C No of samples 10
Frequency Density (nom2 ) occurrence
Taxa (X) x S D
Nematoda 61 1000 52375 33972 Turbellaria 1 100 859 2715 Oligochaeta 24 900 20606 11590 ~~i2QY~k~~1 iOi[2 bimDQ~xlb~r sp ~Q[QQhi~ sectgni~ Chironomid larvae
3 1
38 3
200 100
1000 300
2576 859
32627 2576
5795 2715
19326 4147
Mean number of organismssample 131 standard deviation 54
M b f 2ean num er 0 organIsms 112477 Standard deviation 46757
H= 184 SD= 066 SR= 085 J= 065
bull
A-33
STATION 45 Date 1 August 1984 Depth 58 m Sal i nity (bottoll) 03 ppt Temperature (bottom) 203 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa nUllber (X) X SD
Nematoda 145 1000 124417 52344 Turbellaria 1 100 859 2715 Mmth~sect iHpoundQ~ Q~~Qi ilQ[i9Oligochaeta
5 3
196
500 300
1000
4293 2576
168286
4525 4147
91064 ~igQYsect~~li int9i Ostracoda
2 3
100 300
171 7 2576
5430 4147
bimnQpoundtl sp ~Q[Q2hiY sectlQni~
240 6
1000 600
206064 5152
73526 4434
sectpoundQtQl poundngnai~Helei dae larvae
1862 1
1000 100
1598713 859
966134 271 ~
Mean number of organismssample 2464 Standard deviation 1156
211 ean num ber 0 f organIsms II 2115590 Standard deviation 992518
H= 124 SD= 041 SR= 089 J= 036
A-34
STATION 1S Date 1 August 1984 Depth 24 II
Salinity (bottom) 00 ppt Temperature (bottom) 198 C No of samp I es 10
Frequency Density (nom2) occurrence ---------------- shy
Taxa (X) X S D
Nuertea 1 100 859 2715 Nellatolllorpha 1 100 859 2715 Nematoda 248 1000 212933 108288 Turbellaria 4 400 3434 4434 ~untb~la Hli~g Oligochaeta
4 206
400 1000
3434 176872
4434 75309
~~igQYli~dli i[t~(gi~ ~QtQpound l binQ~ybt2 sp ~2l~bi Q[i ~2tlgtQ(ila tirisect sectpoundQtel poundl9lla Chironomid larvae
10 1
20 205
1 574
9
500 100 800
1000 100
1000 400
8586 859
17172 176013
859 492836
7727
10709 271 5
14021 48104
271 5 150531
13696
Mean number of organismssample 1284 Standard deviation 290
M b f I 2ean nurn er 0 organIsms III 1102442 Standard deviation 2488B5
H= 211 SD= 071 SR= 1 16 J= 057
A-35
STATION 58 Date 1 August 1984 Depth 55 m Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samp 1es 10
Frequency Densi ty _ ltnom2 ) Total occurrence
Taxa number (7) X SD
Nemertea 1 100 859 2715 Nematoda 22 900 18889 15036 Turbellaria 1 100 859 2715 Oligochaeta 19 700 16313 17385 biiQQgl~QhY~ YiCg~~ 2 200 171 7 3620 ~Q[~i~~l~ m2nil~n2i2 ~Q[QehiYm ~lmQni2
4 164
300 1000
3434 140810
6003 103048
Heleidae larvae 8 500 6869 8868
Mean number of organismssample 221 Standard deviation 111
I 2Mean num ber 0 f organIsms m 189751 Standard deviation 95391
H = L 37 SD= 043 SR= 090 J= 046
A-36
STATION 55 Date 1 August 1984 Depth 15 m Salinity (bottoll) 01 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (i ) X SD
Nemertea 1 100 859 2715 Neutoda 122 1000 104749 7394B Turbellaria 4 300 3434 6003 ~~~~~nt~ secte~poundQa~ Oligochaeta
1 118
100 1000
859 101315
2715 61223
~giQgY~k~~l iot~[m~Qi btbQg~2b~ Y[O ~grQipound~ ~nl~ni b~ngpound~tb~[ Spa
3 1 5 1
200 100 500 100
2576 859
4293 859
5795 2715 4525 2715
~Q[QebiYm ~mQoi sect~QttQ~ ~OQOi Heleidae larvae
42 2 2
800 200 100
36061 171 7 171 7
21341 3620 5430
Chironomid larvae 4 400 3434 4434
Mean number of organismssapIe 306 Standard deviation 169
M b f I 2ean nurn er 0 organIsms m 262732 Standard deviation 145101
H = 198 SD= 067 SR= 1 45 J= 054
A-37
~-- --------------~~-------------
STATION 45 Date 17 August 1984 Depth 61 1
Salinity (bottom) 10 ppt Temperature (bottom) 210 C No of samp 1es 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nematoda 240 1000 206064 130213 ~~h~sect limQ tjQ~~Hi~ fQ[i~~ Oligochaeta
31 2
245
400 100
1000
26617 1717
210357
75228 5430
121374 babgglYQbl~ Yi[~sect 1 100 859 2715 Ostracoda 1 100 859 271 5 biQ~xtb~[ Spa ~~Q~~isect ~[pound~Qisect ~Qgebi HQOi
333 2
143
1000 200
1000
28591 4 171 7
1227BO
106553 3620
106860 sectpoundQUg~ poundg~nsectisect 1738 1000 1492247 68441 7
Mean number of organismssample 2736 Standard deviation 944
M b f I 2ean num er 0 organlslls m 2349130 Standard deviation 810600
H= 172 SD= 056 SR= 079 J= 052
A-38
STATION 18 Date 17 August 1984 Depth 27 III
Sal i ni ty (botto) 01 ppt Temperature (bottom) 214 C No of samples 10
Frequency Density (nom 2 ) occurrence
Taxa (X) X SD
Nematoda 186 1000 159700 62468 ~tgt SPa 2 100 171 7 5430 Turbellaria 8 400 6869 8868 ~~ntbg2 imnipoundQ 12 700 10303 11304 Oligochaeta 283 1000 242984 90509 ~~iQQY~~Y~lls inlgtmggisBivalvia
4 1
400 100
3434 859
4434 271 5
~Qt~i~Y nilnsectisectbimnQpoundttbg[s SPa ~QtQQbi~ islmQDi2
1 17
286
100 900
1000
859 14596
245560
271 5 10747 83461
sectpoundetteln poundDsggnsectisect Chironomid larvae
526 4
1000 3Q0
451624 3434
179610 6003
Mean number of organismssapIe 1330 Standard deviation 162
Mean nurn ber I 20 f organIsms m 1141938 Standard deviation 139389
H= 214 SD= 073 SR= 1 06 J= 060
A-39
STATION 58 Date 17 August 1984 Depth 55 II
Salinity (bottom) 01 ppt Temperature (bottom) 220 C ND of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (7) x S D
Nematoda 68 1000 58385 27689 Turbellar i a 4 200 3434 8295 Oligochaeta 19 800 16313 13084 ~~i~Q~k~~l~ in~~[m~i bitUQ9Y2bYa Yi[~na Bivalvia
3 3 4
300 300 300
2576 2576 3434
4147 4147 6003
gQ[QipoundYl~ mnilDa 1 100 859 2715 binQpoundY~[ sp gQ[Q2UY a~mgnia sect~Qtgl~n ~n~~ni
2 338
6
100 1000 400
171 7 290207
5152
5430 56636 7240
Mean number of organismssample 448 Standard deviation 72
W b f 2lean num er 0 organlsms II 384653 Standard deviation 61988
H = 1 27 SD= 041 SR= 1 02 J= 038
A-40
STATION 55 Date 17 August 1984 Depth 18 m Salinity (bottom) 00 ppt Temperature (bottol) 223 C No of samples 10
Frequency Density (nom 2 ) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 291 1000 249853 118104 Turbellaria 1 100 859 2715 M~ntb~ mni~Q Oligochaeta
1 47
100 1000
859 40354
2715 28347
~~iQQ~sectkY~ll int~[m~gi bitbQQ1YSDY Yi(gn Bivalvia
25 12
6
900 500 400
21465 10303 5152
1231 0 18459 7240
~Q~2ipoundY mnil~ni Ostracoda
11 8
400 600
9445 6869
12442 6773
bmnQpoundYb~r~ SPa 52 1000 44647 19746 ~QrQsbY lmgnisectsQiielo snQ~ni~ Chironomid larvae
43 5
15
1000 400 BOO
36920 4293
12879
21436 6071 8344
Mean number of organismssample 517 Standard deviation 174
M b f I 2ean num er 0 organlsms m 443896 Standard deviation 149431
W = 228 SD= 065 SR= 1 33 J= 062
A-41
STATION 45 Date 29 August 1984 Depth 55 III
Salinity (bottom) 07 ppt Temperature (bottom) 199 C No of samples 10
Frequency Density (noI 2) Total occurrence
Taxa number (X) X SD
Nematoda 192 1000 164851 98380 ~sntbsect limnipoundQlDligochaeta
2 198
200 1000
171 7 170003
3620 67339
~Q[eipoundYls msniln~isect Ostracoda
1 4
100 400
859 3434
2715 4434
bimnQpoundytb[s Spa gQ[Qeniy sect21QOi~ sectpoundQttQlsO poundsOsggOi
164 87
2468
1000 1000 1000
140810 74698
2119025
39283 39460
840890
Mean number of organismssample 311 6 Standard deviation 101 1
ill b f 2nean nUll er 0 organIsms 2675398 Standard deviation 8682B8
W= 116 SD= 036 SR= 060 J= 039
A-42
STATION 18 Date 29 August 1984 Depth 30 bull Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samples 10
Total Frequency occurrence
Densi ty 2
(nom )
Taxa number (~ ) x S D
Nematoda 150 1000 128790 28905 Turbellaria 7 400 6010 9096 ~nh imni~Qj Oligochaeta ~~i~2Y~k~~1 ini~CIDgii bih2g~Qb~ Yi(~U2 Bivalvi a
B 145
1 1 2
600 1000
100 100 200
6869 124497
859 859
171 7
677 3 84732
271S 2715 3620
~Q[Qi~yli miDllgni bimn2pound~ih~C sp ~QtQehiY imQUia Harpacticoida
7 7
265 1
500 300
1000 100
6010 601 0
227529 859
8145 10747
139462 2715
sect~QtiQDi ~Q~Q~i~ Chironomid larvae
2471 2
1000 200
2121601 171 7
1063112 3620
Mean number of organismssample 3067 Standard deviation 121 9
2Mean number 0 f organIsms m 2633326 standard deviation 1046718
H = 1 09 SD= 034 SR= 1 04 J= 029
A-43
STATION 58 Date 29 August 1984 Depth 55 111
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (noI 2 ) Total occurrence -----------------
Taxa nUllber (X) X SD
Nemertea 4 400 3434 4434 Nuatoda 64 1000 54950 25016 Turbellaria 9 400 7727 11047 ~Hl~b limli~Q19 Oligochaeta
1 37
100 1000
859 31769
2715 19006
i~Qyh il(~~ bHtlQSlheln Yl Bivalvia
4 4
20
200 300 400
3434 3434
17172
8215 6003
26541 ~e(ijY l bQ~dlH sp
26 1
700 100
22324 859
25662 2715
~Q[QQhil iQ sectjgUell HD Heleidae larvae
418 20
1
1000 800 100
358895 17172
859
129443 12799 271 5
Mean number of organismssample 609 Standard deviation 175
nean num b er 0 f organIsms 1 111 2 522887 Standard deviation 150164
H= 176 SD= 051 SR= 1 30 J= 047
A-44
I I
I
I
STATION SS
Date 29 August 1984 Depth 21 1
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (no2) Total occurrence
Taxa nUllber (X) x S D
Nematoda ISO 1000 128790 37969 Turbellaria 1 100 859 271 5 Oligochaeta 48 1000 41213 16088 ~i~g~sect~~l iQ~~mgi bi~QQg~gb~sect ~i~nsect
10 14
600 600
eSB6 12020
9050 14137
Bivalvia 4 200 3434 7240 ~Q[Q~Yl niQaa Ostracoda
15 7
700 SOO
12879 6010
15806 7069
bmQg~~~b~ SPa 14 800 12020 8295 ~g[gaby mgni sect~g~~Qn ~ngnai Chironomid larvae
IB4 25 9
1000 900 700
157982 21465
7727
35563 16810 6335shy
Mean number of organismssample 481 Standard deviation B6
2Mean number 0 f organlsms m 412987 Standard deviation 74131
H= 24S SD= 074 SR= 1 23 J= 068
A-45
STATION 45 Date 14 September 1984 Depth 61 11
Salinity (bottom) 03 ppt Temperature (bottom) IB4 C No of samples 10
---------------------------------~----------------------------------------
Taxa TotalnUlllDer
Frequency occ~~~ence
Density (no 2) -----X-------sect7B
Nematoda 189 1000 162275 85233 t1tQ SPa
Turbellaria 2 2
200 100
171 7 171 7
3620 5430
~~~nIng limoifQl t1QQQDi~ flQriQ Oligochaeta
5 19
142
400 800
1000
4293 1631 3
121921
6071 12442 30504
~QQifYl mDl~D bimoQpoundt1hgr Spa Cumacea
19 184
2
800 1000 200
1631 3 157982
171 7
130B4 69541 3620
~Q[QnniYm ~~lmQDi Harpacticoida
118 1
1000 100
10131 5 B59
43367 2715
sectfQIIQD fOQgO Chironomid larvae
1780 1
1000 100
1528308 859
673586 2715
Mean number of organismssample 2464 Standard deviation 874
M ean num b er f 20 organlsms 2115590 Standard deviation 750305
H= 151 SD= 046 SR= 1 07 J= 041
A-46
STATION 18 Date 14 September 1984 Depth 21 III
Salinity (bottom) 01 ppt Temperature (botto) 182 C No of samples 10
Frequency DenSity (nom 2 ) Total occurrence ---------------- shy
Taxa nUlDber (i) X SD
Nemertea 1 100 859 271 5 Nematoda 186 1000 159700 44925 Turbellaria 16 400 13738 20717 ~~Dth~~ limni~Ql Oligochaeta
13 55
700 900
11162 47223
9096 30085
~Q~ei~Yl nil~Qi~ 17 900 14596 7069 bimDg~lbg[ Spa b 500 5152 6003 ~Q[Q2niY ~lgQi~ Harpacti coi da
562 2
1000 200
482533 171 7
136766 3620
sectpoundQttQ~Q~ ~n~ni 791 1000 679153 324290
Mean number of organismssample 1649 Standard deviation 447
I 211ean nUll ber 0 f organIsms I 1415831 Standard deviation 384136
H= 179 SD= 064 SR= 084 J= 054
A-47
STATION 58 Date 14 September 1984 Depth 58 III
Salinity (bottom) 01 ppt Temperature (bottom) 191 C No of sampl es 10
-------------------------------------------~------------------------------Frequency Density (nom 2 )
Total occurrence Taxa number eX) X SD
Nemertea 1 100 859 2715 Nematoda 55 1000 47223 18658 Turbellaria 10 500 8586 11448
1 100 859 2715 Oligochaeta 41 1000 35203 17850 ~~iQQ~~gll iu1g[m~i ~Q[Q~Yl nilD bimnQ~Y~h[ Spa ~Q[Q~hiYm lmgui sectpoundQilg1D poundU2D Chironomid larvae
4 10
2 277
23 4
100 500 200
1000 700 300
3434 8586 171 7
237832 19748 3434
10861 11448 3620
50561 21051 6003
Mean number of organismssample 428 Standard deviation 51
M b f 2ean num er 0 organIsms III 367481 Standard deviation 43743
H= 179 SD= 055 SR= 114 J= 052
A-48
I I
STATION SS Date 14 September 1984 Depth 21 II
Salinity (bottom) 01 ppt Temperature (bottom) 190 C No of samples 10
--------------------------------------------------------------------~-----
Frequency Density (no1I2) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 102 1000 87577 39200 Oligochaeta 34 700 29192 31142 ~iQ2Y~y1 int(mgi~ bithQgl~en~ Yi(gDsect ~Q(~i~Y m~DilgDsecti~ bimDQamp~1h(sect sp ~2(QQhiY slmQD 2poundQiiQlsD ~sD~g~nsecti Chironomid larvae
36 18 16 17
100 16
3
1000 600 800 700
1000 800 300
30910 15455 13738 14596 85860 13738 2576
157BO 20953 10078 14621 32126 10861 4147
Mean number of organismssample 342 Standard deviation 97
2Mean nUllber 0 f organlsms m 293641 Standard deviation 83617
H= 262 SD= 079 SR= 095 J= 083
A-49
Appendix B--Sediment particle size and organic content of the Cathlamet Bay
benthic invertebrate sites 13 March through 14 September
1984
iii
1
Station 18a 48 54 57
Survey 1 1 1 1
Month March March March March
Day 13 13 13 13
Particle size (mm) Phib Percent by weight
gt 40 -2 000 000 000
20- 40 -1 000 000 000
10- 20 0 000 009 000
05- 10 1 018 1079 032
025- 050 2 545 7583 2468
0125- 025 3 8731 1225 6783
00625-0125 4 491 037 657
lt0625 (5-12) 216 067 060
Organic Content 160 116 128
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
b Phi= -log2(sediment particle diameter in mm)
B-1
Station 18a 48 54 57
Survey 2 2 2 2
Month April April April April
Day 5 5 5 5
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 003 093 000
05shy 10 1 005 31 75 023
025shy 050 2 087 5904 2368
0125- 025 3 6316 750 7155
00625-0125 4 3056 026 427
lt0625 (5-12) 533 052 028
Organic Content 081 077 065
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-2
Station 45 55 58
Survey 3 3 3 3
Month April April April April
Day 18 18 18 18
Particle size (mm)
gt 40
Phi
-2
Percent by weight
000 000 000
20shy 40 -1 000 000 000
10shy 20 0 005 009 004
05shy 10 1 010 027 013
025shy 050 2 015 095 225
0125- 025 3 097 536 6111
00625-0125 4 453 2821 2205
lt0625 (5-12) 9420 6511 1442
Organic Content 31 42 14
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-3
Station 18a 45 55 58
Survey 4 4 4 4
Month May May May May
Day 4 4 4 4
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 021
05shy 10 1 000 065 063
025shy 050 2 012 370 230
0125- 025 3 091 4099 4696
00625-0125 4 322 3650 3052
lt0625 (5-12) 9575 1810 1939
Organic Content 330 180 160
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-4
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
5
May
17
000
000
005
016
217
5862
2729
1170
100
45 55 58
5 5 5
May May May
17 17 17
Percent by weight
000 000
000 000
005 008
113 031
325 274
1903 5613
2784 2401
4870 1672
240 110
000
000
000
010
020
079
397
9494
390
B-5
Station 18al 45 55 58
Survey 6 6 6 6
Month June June June June
Day 6 6 6 6
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 020
05shy 10 1 005 051 027
025shy 050 2 005 301 1 79
0125- 025 3 074 3189 5404
00625-0125 4 599 4118 2885
lt0625 (5-12) 9317 2332 1485
Organic Content 340 240 150
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-6
Station
Survey
Month
Day
Particle size Cmm) Phi
gt 40 -2
20shy 40 -1
10shy 20 a
05shy 10 1
025shy 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
7
June
18
000
000
005
029
138
3917
4143
1768
180
45
7
June
18
55 58
7 7
June June
18 18
Percent by weight
000
000
000
010
020
080
427
9464
310
000 000
000 000
000 007
011 022
057 190
957 5286
3023 2642
5957 1853
1 70 110
B-7
Station 18al 45 55 58
Survey 8 8 8 8
Month July July July July
Day 2 2 2 2
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 006 002 006
05shy 10 1 006 0l3 023
025shy 050 2 017 088 171
0125- 025 3 074 2712 5365
00625-0125 4 552 3892 3081
lt0625 (5-12) 9345 3294 l354
Organic Content 410 210 160
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-8
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
9
July
17
000
000
003
013
130
4294
4434
1127
130
45
9
July
17
Percent
000
000
000
006
012
051
046
9885
290
55
9
July
17
by weight
000
000
019
048
091
628
3616
5597
030
58
9
July
17
000
000
004
022
158
5017
3148
1650
140
B-9
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18al
10
August
1
45
10
August
1
55
10
August
1
58
10
August
1
Percent by weight
000 000
000 004
001 004
009 018
018 088
098 306
049 2510
9824 7070
000
005
045
763
3604
4495
932
156
100 190 060
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-10
Station 18 45 55 58
Survey 11 11 11 11
Month August August August August
Day 17 17 17 17
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000 000
20- 40 -1 005 000 000 000
10- 20 0 021 003 000 210
05- 10 1 064 009 000 159
025- 050 2 226 027 045 2656
0125- 025 3 3259 131 712 3719
00625-0125 4 4327 195 1737 1159
lt0625 (5-12) 2098 9635 7506 2097
Organic Content 210 300 160 100
Ii I
B-11
Station
Survey
Month
Day
Particle size (mm) Phi
gt40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
12
August
29
000
000
012
046
186
3465
4498
17 93
241
45
12
August
29
55 58
12 12
August August
29 29
Percent by weight
000
000
002
009
026
118
189
9656
540
000 000
000 000
003 011
011 028
055 1013
859 5033
1596 1827
7476 2089
1 70 120
B-12
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
_-------------------- shy
B-13
Table 1--List of invertebrate taxa found at benthic invertebrate sites
located in Cathlamet Bay Oregon March through September 1984
Coelenterata Hydra sp
Turbellaria Nemertea Nematoda Nematomorpha Oligochaeta
Vejdovskyella intermedia Limnodrilus hoffmeisteri Ilydrilus frantzi
Polychaeta Neanthes limnicola Hobsonia florida Manyunkia speciosa
Gastropoda Lithoglyphys (=Fluminicola)
Bivalvia virens
Corbicula manilensis Ostracoda
Limnocythera sp Mysidacea
Neomysis mercedis Cumacea Amphipoda
Eogammarus spp Eogammarus confervicolus Corophium salmonis Corophium spinicorne Pontoporeia hoyi Eohaustorius estuaris
Isopoda Saduria entomon
Harpacticoida Scottolana canadensis
Insecta Diptera adult Diptera pupae Heleidae larvae Chironomidae larvae Chironomidae pupae Trichoptera larvae Hymenoptera Collembola
Hydracarina
Occurrence not quantified
8
15 ppt (Chapman and Brinkhurst 1980) This species appears to be a useful
salinity indicator and future benthic work should identify and enumerate
this species Due to time and taxonomic expertise requirements only the
oligochaete species Vejdovskyella intermedia was enumerated Salinity
tolerances of this species are unknown
Since intersti tial salinities do not vary dielly as do salini ties in
the water column (Sanders et al 1965) interstitial salinities should have
been measured Al though many infauna species may be exposed to overlying
water because of activity andor tubes (exCorophium spp) many benthic
invertebrates are dependent on interstitial salinity levels Measurements
of interstitial salinities are necesssary to determine benthic infauna
sensitivity to salinity intrusion
Finally there appeared to be a large amount of within station
variability in the sediment texture particularly at Stations 55 and 58
The sediment at Station 55 ranged from a very fine sand to almost all clay
The sediment texture variability at Station 58 was a result of the uS
Coast Guard moving Can 5 to a new location forcing us to estimate the
previous location of our station
ACKNOWLEDGMENTS
We wish to thank Maurice Laird Nick Zorich Larry Davis Roy Pettit
Edward Koller and David Miller for their assistance in developing the
sampling device and collecting the samples We express special thanks to
Sandy Lipovsky Thomas Moylan and Susan Newhouse for helping sort and
identify the invertebrates
9
LITERATURE CITED
Chapman P M and R O Brinkhurst
1980 Salinity tolerance of some selected aquatic oligochaetes Internat
Rev der Gesamten Hydrobio1gie 65499-505
Chapman P M and R O Brinkhurst
1981 Seasonal changes in interstitial salinities and seasonal movements
of subtidal benthic invertebrates in the Fraser River estuary BC Est
Coast Shelf Sci 1249-66
Gray J S and H Christie
1983 Predicting long-term changes in marine benthic communities Mar
Ecol Prog Sere 1387-94
Kinne O
1966 Physiological aspects of animal life in estuaries with special
reference to salinity Neth J of Sea Res 3 227-244
Margalef R
1958 Information theory in ecology Gen Syst 336-71
McCabe G T Jr W D Muir R L Emmett and J T Durkin
1983 Interrelationships between juvenile sa1monids and nonsalmonid fish
in thl Columbia River estuary Fish Bu11U S 81(4)815-826
Pie10u E L
1966 The measurement of diversity in different types of biological
collections J Theor BioI 13131-144
Sanders H L P C Mange1sdorf and G R Hampson
1965 Salinity and faunal distribution in the Pocasset River
Massachusetts Limno Ocean 10216-229
Shannon L E and W Weaver
1963 The mathematical theory of communication Univ of Illinois Press
Urbana Ill
10
Simpson E H
1949 Measurement of diversity Nature 163688
11
APPENDIX A--Descriptive summary of benthic invertebrate data collected in
Cathlamet Bay Oregon during March through September 1984
STATION 18 Date 13 March 1984 Depth 46 m Salinity (bottom) 11 ppt Temperature (bottom) 67 C No of samples 15
Frequency Density (nom 2 ) Total occurrence
Taxa number (7) X SD
Nemertea 2 67 1145 4434 Nematoda 134 1000 76702 33169 Turbellaria 22 667 12593 15854 ~~n~b~~ imnpoundQ 31 Oligochaeta 486
933 17744 1468 1 100() 278186 138779
~QtQif~12 mnil~nsectisect 24 Ostracoda 39
933 13738 8462 800 22324 17715
~Q[QQbiYm ~lmQni~ 74 867 42358 38B70 EQntQIH~i2 Qyi 1 EQri gnQQn 1 Harpacticoida 7
67 572 2217 67 572 221 7
333 4007 7159 Insecta 2 67 1145 4434 Chironomid larvae 20 667 1144 B 10090 Collembola 95 867 54378 82588 Hydracarina 1 67 572 221 7
Mean number of organismssample 626 Standard deviation 19 1
M ean num b er 0 f 2organIsms III 537484 Standard deviation 163579
H= 237 so= 069 SR= 1 42 J= 061
A-l
STATION 48 Date 13 March 1984 Depth 107 m Salinity (bottom) 05 ppt Temperature (bottom) bB C No of sampl es 15
Frequency Densi ty (nom 2 ) Total occurrence
Taxa number (7) X SD
Nemertea 31 6b7 17744 1849 1 Nematoda 38 667 21751 22685 Oligochaeta 4 133 2290 6859 ~QQpound12 2nil~nsectisect 31 Ostracoda 1
667 17744 29648 67 572 221 7
~Q9~~[~ spp 1 ~Q[Q2l ~~lQnisect 1 ~Q2sectiQisect sectisect 4 Harpacticoida 1
67 572 2217 67 572 221 7
200 2290 5097 67 572 221 7
Insecta 2 133 1145 3021 Diptera adult 1 67 572 2217 Collembola 24 467 13738 30923
Mean number of organismssample 93 Standard deviation 59
Mean number of organismsm2 795b4 Standard deviation 50740
H= 255 SD= 079 SR= 1 55 J= 071
A-2
STATION 54 Date 14 March 1984 Depth 177 m Salinity (bottom) 00 ppt Temperature (bottom) 66 C No of samples 15
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nemertea 47 1000 26903 14096 Nematoda 7 267 4007 9102 Turbellaria 9 333 5152 1114B Oligochaeta 11 333 6296 10989 Gastropoda 1 67 572 2217 ~Q(Qi~Yl mnil~n2i~ Ostracoda
199 3
1000 200
11390B 171 7
97165 3555
gQ[Qehiy sectlmQnisect Harpacticoida
3 1
200 67
171 7 572
3555 221 7
Heleidae larvae 29 867 16600 10989 Chironomid larvae 2 133 1145 3021 Collembola 2 67 1145 4434
Mean number of organismssample 209 Standard deviation 103
2Mean number 0 f organIsms m 179734 Standard deviation 88247
H = 1 86 SD= 056 SR= 1 33 J= 052
A-3
STATION 57 Date 13 March 1984 Depth 91 m Salinity (bottom) 00 ppt Temperature (bottom) 63 C No of sampl es 15
Frequency Densi ty (no 81 2) Total occurrence
Taxa number (X) X SD
Nemertea 27 667 15455 13459 Nematoda 8 400 4579 6381 Turbellaria 4 200 2290 5097 Oligochaeta 8 400 4579 6381 ~g[gipound~l mnilui Ostracoda
1 1
67 67
572 572
2217 2217
~Qgml[a spp 1 67 572 2217 ~Q[Qeni~m lmQnisect Harpacticoida
2 1
133 67
1145 572
3021 221 7
Insecta 3 67 171 7 b651 Chironomid larvae 1 b7 572 221 7 Collembola 37 400 21179 65700 Hydracarina 1 67 572 221 7
Mean number of organismssample 63 Standard deviation 82
Mean number of organismsm2 54378 Standard deviation 70029
H= 253 SD= 075 SR= 1 83 J= 068
A-4
STATION 18 Date 5 April 1984 Depth 30 II
Salinity (bottoll) 00 ppt Temperature (bottom) 90 C No of samples 15
Frequency Densi ty (no1I 2) Total occurrence
Taxa number (i ) If S D
Nemertea 11 bOO 6296 6042 Nematomorpha 2 133 1145 3021 Nuatoda 119 1000 6811 6 50947 Turbellaria 20 600 11448 13640 ~~~nin~sect liIDni~Q12 Oligochaeta
33 481
1000 1000
18889 275324
10364 142326
~Q~Qi~Yl m2nil~ni2 23 600 13165 1371 7 Ostracoda 33 933 18889 10861 gQ(QQrriYID sect2mQnisectHarpacti coi da
38 7
933 133
21751 4007
13329 13328
Chironomid larvae 16 667 9158 8868 ColI embola 1 67 572 2217
Mean number of organismssample 523 Standard deviation 227
M b f 2ean num er 0 organIsms m 448762 Standard deviation 194508
H= 202 SD= 059 SR= 114 J= 0S6
A-5
STATION 45 Date 18 April 1984 Depth 64 III
Salinity (bottom) 00 ppt Temperature (bottom) 95 C No of samples 15
Total Frequency occurrence
Density (noI 2 )
Taxa number (X) X SD
Nematoda 171 1000 97890 92277 tyg~ sp Turbellaria
1 29
67 600
572 16600
221 7 23506
H~nng~ imDi~g tQQsectQl fg~ig Oligochaeta ~Q[Qi~Y2 m2niD~i Ostracodamiddot
9 41
367 42
100
400 1000 1000 800
1000
5152 23469
210071 24041 57240
781 5 13563
100542 19254 43134
~Q[Qeniym amQnisectHarpacticoida Heleidae larvae
37 2049
1
933 1000
67
21179 117284B
572
189B5 616612
221 7 Chironomid larvae 3 200 171 7 3555 Collembola 1 67 572 221 7 Insect parts 1 67 572 221 7
Mean number of organismssample 1901 Standard deviation 864
b f 2nean num er 0 organIsms m 1632485 Standard deviation 741931
H = 1 52 SD= 046 SR= 1 13 J= 040
A-6
STATION 18 Date 18 April 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom) No of samples 15
Frequency Density (nom2) Total occurrence
Taxa nueber (X) x s D
Nemertea 13 533 7441 9663 Nematomorpha 3 200 171 7 3555 Nematoda 195 1000 111618 63675 Turbell ari a 9 467 5152 6326 ~~ni~~ i~ni~Ql~ 30 867 17172 129B1 Oligochaeta 580 1000 331992 108880 ~QC~i~Ml~ m~nil~n~isectOstracoda
28 18
1000 667
16027 10303
11179 10364
~Q[Q~~iYm sect~Qni2 sect~ci~ gniQQnHarpacticoida
105 1
17
1000 67
400
60102 572
9731
25553 2217
19970 Chironollid larvae 16 667 9158 8B6B
Hean number of organismssample 677 Standard deviation 199
M ean num b I 2er 0 f organIsms AI 580986 Standard deviation 171095
w = 202 SD= 062 SR= 1 10 J= 056
95 C
A-7
STATION 58 Date 18 April 1984 Depth 67 m Salinity (bottom) 00 ppt Temperature (botto) No of samples 15
Frequency Density (nom2) Total occurrence
Taxa number (~) X SD
Nemertea 62 933 35489 26338 Nematoda 224 1000 128218 49903 Turbellaria 9 600 5152 4354 ~nt~sect imni~Q Oligochaeta
1 79
67 1000
572 45220
2217 23506
bnQgYRhY~ Yi~~nE ~Q(~i~Y nil~ni Ostracoda
2 10 19
67 533 600
1145 5724
10876
4434 6214
10989 ~Q[QeniY sectQOiHarpacticoida
30 2
B67 133
17172 1145
12142 3021
Heleidae larvae 6 333 3434 5430 Chironomid larvae 9 400 5152 7B1 5 Chironomid pupae 2 133 1145 3021
Mean number of organismssample 303 Standard deviation 94
I 11 ean num ber 0 f organlsms 2 260442 Standard deviation 81043
H= 233 SO= 070 SR= 1 36 J= 063
97 C
A-B
Frequency Density (nolm 2) Total occurrence -----------------
Taxa number (7) X SD
Nemertea 16 467 9158 10989 Nematoda 266 1000 152258 54541 Turbellaria 23 600 13165 15518 ~l~nH ~Q~iQH 2 133 1145 3021 Oligochaeta 181 1000 103604 56532 bi~hQg~Qn~~ ~it~l~ ~QtQifg mli~lsectisectOstracoda
3 59 15
200 1000 733
1717 33772 8586
3555 23054
7256 ~Q[QQhiY HmQtlsect ~Q[QehiYm sect21tlfQ[lg EQlQQQt~i hQ~i
466 3 1
1000 200 67
266738 171 7 572
75094 3555 221 7
Harpacticoida 30 400 17172 40402 Chironomid larvae 10 533 5724 6214
Mean number of organismssa_pIe 717 Standard deviation 143
I 2Mean number 0 f organlsms m 615330 Standard deviation 122532
H= 226 SO= 072 SR= 119 J= 061
STATION 55 Date 18 April 1984 Depth 30 1ft
Salinity (bottom) 00 ppt Temperature (bottom) 93 C No of SaIIples 15
A-9
STATION 45 Date 4 Hay 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 103 C No of samples 10
Frequency Density (noI2) Total occurrence ---------------- shy
Taxa number (Xl X SD
Neutoda 269 1000 230963 167296 Turbellaria 1 100 859 2715 ~u~yuti Q~iQ ~Ub imni~Q
1 2
100 100
859 171 7
2715 5430
j2~Qn flec Oligochaeta
28 169
BOO 1000
24041 145103
19326 74351
~igeYk~ll iulCIDai ~Q(Qi~Y uini Ostracoda
32 4 5
aoo 400
400
27475 3434 4293
22463 4434 6071
biQQ~~tbt sp ~e(QQbYm mQoi sectampQeD ~nQDisect Chironomid larvae
25 2
578 2
900 200
1000 200
21465 1717
496271 171 7
15279 3620
293820 3620
Mean number of organismssample 111 8 Standard deviation 522
11 b f I 2ean num er 0 organIsms m 95991 5 Standard deviation 447842
H= 193 SD= 065 SR= 118 J= 052
A-10
STATION 18 Date 4 Hay 1984 Depth 34 II
Salinity (bottom) 00 ppt Temperature (bottom) 104 C No of saMples 10
Frequency Density (noI 2 ) occurrence ----------------shy
Taxa (X) X SD
Nemertea 10 600 8SB6 10709 Nuatoda 153 1000 131366 47899 Turbellaria 8 600 6869 6773 ~n1b limnpoundQl Oligochaeta
11 147
700 1000
middot9445 126214
9449 6231 7
~i~g~kXl in1(m~i ~g(2iY OiOi Ostracoda
86 4 1
900 300 100
73840 3434 859
61543 6003 2715
bimoQpoundx1b( sp ~2(QQbiYm mgoiDi ptera adult
3 57
3
300 900 300
2576 48940
2576
4147 21815 4147
Chironomid larvae 4 300 3434 6003 Chironomid pupae 1 100 859 2715
Hean nUMber of orQanismssample 489 Standard deviation 160
b f 2nean nUll er 0 organIsms II 418997 Standard deviation 137721
H= 243 SD= 076 SR= 1 34 J= 066
A-l1
STATION 5B Date 4 Hay 1984 Depth 61 bull Salinity (botto~) 00 ppt Temperature (bottom) 110 C No of suples 10
Frequency Density (nom 2) Total occurrence ---------------- shy
Taxa number (X) X SD
Neertn 41 1000 35203 21206 Nematoda 211 1000 181165 53305 Turbellaria 4 200 3434 7240 Oligochaeta 89 1000 76415 32240 ~i~2~~~11~ iU1(~i~bi1begygny YitQ ~e(biYl ~OiDi OstracDda
4 3
20 1
400 200 BOO 100
3434 2576
17172 859
4434 5795
19829 2715
biue~1bt~ sp ~2(egniY Imeoi sectg11g1O OdD Helei dae larvae
5 32
1 1
400 900 100 100
4293 27475
859 859
6071 18010 2715 2715
Chironomid larvae 7 400 6010 9096
Mean number of organismssample 419 Standard deviation 93
b f 2ean nUll er 0 organIsms m 359753 Standard deviation 79875
H= 221 SD= 068 SR= 138 J= 060
A-12
Frequency Density (nolm 2) occurrence -----------------
Taxa (X) X SD
Nemertea 23 900 1974S 15171 Neutollorpha 1 100 859 271 5 Nellatoda 269 1000 230963 69923 Turbellaria 10 600 8586 991 4 ~~xYnki Q~ampiQ 4 300 3434 6003 ~nb limnipoundQl Oligochaeta
1 79
100 1000
859 67829
2715 40363
~i~Q~kXl io[~i biDe9XQDX ~i[~OBi valvi a
11 3 1
800 300 100
9445 2576 859
6335 4147 271 5
~Q[~poundY mnil~n bimoQampXD[ sp ~Q[QabiY lQO Harpacticoida
18 2
159 1
700 200
1000 100
15455 171 7
135659 859
13904 3620
54272 2715
Chironomid larvae 2 200 171 7 3620 Trichoptera larvae 1 100 859 2715
STATION 55 Date 4 May 1984 Depth 21 m Salinity (bottom) 00 ppt Temperature (bottom) 107 C No of suples 10
Mean number of organismssamples 594 Standard deviation 147
Mean number of organismsm2 501422 Standard deviation 126525
H= 219 aD= 069 SR= 1 63 J= 055
A-13
STATION 45 Date 17 May 1984 Depth 61 m Sal i ni ty (bottom) 01 ppt Temperature (bottom) 121 C No of sampl es 10
Frequency Total occurrence
Taxa nUlllber (7)
NelDertea 1 100 859 2715 Nematoda 163 1000 139952 127996 Polychaeta 1 100 859 2715 ~~~n~h~ imni~Qs Hobsonia florida
2 6
200 600
171 7 5152
3620 4434
Oligochaeta 329 1000 282479 13291 8 ~~lQQYsectk~~12 in~~rmQi 57 900 48940 33142 ~Qr~ipound~2 ffi2niDi 6 500 5152 6003 Ostracoda 5 200 4293 10898 bimDg~yth( SPa 13 600 11162 12176 ~Q(Qebi~m sectQDisect Harpacticaida
2 2
200 100
1717 1717
3620 5430
2poundQttQD poundDQDsectisectDiptera adult
296 1
1000 100
254146 859
172633 271 5
Mean number of organismssample 884 Standard deviation 326
b f I 2nean num er 0 organlss m 759002 Standard deviation 280131
H= 209 SD= 071 SR= 1 33 J= 055
A-14
STATION 18 Date 17 May 1984 Depth 30 m Salinity (bottom) 00 ppt Temperature (bottom) 122 C No of samples 12
Frequency Density (nom2) Total occurrence -----------------
Taxa number (X) X SD
Nematoda 50 833 35775 22815 ~ntb limnipoundQl 3 Oligochaeta 97
250 833
2147 69404
3883 48495
~igQ~~k~ intr~ 27 ~QrQipoundY mnin~i~ 5
667 333
19319 3S7S
19068 5740
Ostracoda 1 83 716 2479 bimnQpound~nr sp 5 ~Q(Q~bY ~mQni S4 ~Q(Q~niY ~QinipoundQ(n 3
333 833 250
3578 60102
2147
5740 43780 3883
fgnQ2Q(i bQ~i 1 sectpoundQtgO poundnQn~i 2 Chironomid larvae 4
83 167 250
716 1431 2862
2479 3342 5592
Mean number of organismssample 235 Standard deviation 116
nean nURl b er 0 f organlslls II 2 201771 Standard devi ati on 99221
H= 236 SD= 075 SR= 1 35 J= 066
A-15
STATION 58 Date 17 May 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) 123 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nemertea 2 100 171 7 5430 Nematoda 75 1000 64395 34404 ~~2Qih~a limQi~Q 2 200 171 7 3620 Oligochaeta 60 1000 51516 33376 ~~igQY~~~12 iQ~[~~gi 2 200 171 7 3620 bitQQ9~Bh~sect Yr~Qsect 3 200 2576 579~
gQ[Qi~Yl ID2Dil~nsectisect Ostracoda
6 6
500 400
5152 5152
6003 8295
binQ~~nr[ sp gg[QQOYm mQQsect sect~QttQn 5n2Q~nsectia Chironomid larvae
2 34
1 1
200 1000
100 100
171 7 29192
859 859
3620 12927 271 5 2715
Mean number of organismssample 194 Standard deviation
2Mean nurn ber 0 f organIsms fA 166568 Standard deviation 56259
H= 225 SD= 072 SR= 1 45 J= 063
A-16
66
STATION 55 Date 17 May 1984 Depth 24 II
Salinity (bottom) 00 ppt Telllperature (bottom) 126 C No of samples 10
Total Frequency occurrence
Taxa nUllber (X) X SD --------------------------------------------------------------~-----------
Nematollorpha 2 200 171 7 3620 Nematoda 63 1000 54092 35297 Oligochaeta 94 1000 80708 44004 ~~iQQY~k~~l iQt~(m~Qi bitnQg~Qh~~ Yi[~Q gQ[QipoundY~ mni~Q~i Ostracoda
10 9 4 2
600 800 300 100
8586 7727 3434 171 7
9050 4874 6003 5430
bimnQ~~ln~[e sp ~Q(QQbiYm mQD ~Q[QQbiYm 2inipoundQ[n~ Chironomid larvae
6 142
3 1
600 1000 200 100
5152 121921
2576 859
4434 50682 5795 2715
Mean number of organismssample 336 Standard deviation 62
2Mean num ber 0 f organisms m 288490 Standard deviation 53421
H= 214 SD= 071 SR= 119 J= 062
A-17
STATION 45 Date 1 June 1984 Depth 61 m Salinity (bottom) 01 ppt Temperature (bottom) 139 C No of samples 10
Total Frequency occurrence
Density (no2)
Taxa nUllber (1) X SD
Nematoda 174 900 149396 132347 Turbellaria 5 200 4293 10898 ~~~QiQ~sect tmQtpoundQ~ ~QQsectQ flQi~sect Oligochaeta ~~iQQysecttygl~ iQl~rm~~i2 ~Q[Qi~~l~ ~~DilgDsectisect Ostracoda
5 20
190 103
12 5
400 900
1000 900
60 (I 400
4293 17172
163134 88436 10303 4293
6071 8095
92563 51524 11304 6071
bimnQpoundytng[ sp ~gQmYsectisect IDg[pound~Qisect ~Q[QQhi~m sectlmQDisect sectpoundQtiQlsectQ pound~Qgsectisect ChironQmid larvae
33 1
10 375
2
900 100 700
1000 200
28334 859
8586 321975
171 7
17196 2715 7010
179201 3620
Mean number of organismssample 935 Standard deviation 254
nurn b 0 f 2lean er organlsms m 802791 Standard deviation 218423
H= 239 SD= 075 SR= 1 22 J= 065
A-18
STATION 18 Date 1 June 1984 Depth 30 AI
Salinity (bottom) 00 ppt Temperature (bottom) 134 C No of samples 11
Frequency Density (no 1m2)
Taxa Total number
occurrence (X)
---------------- shyX SD
Turbellaria 14 636 10928 1157 7 ~~~Qltlg~ ilipoundQ~ Oligochaeta
10 178
727 1000
7805 138937
601 6 67913
~~iQQy~tY~l~ ill~[m~Qi~ 122 636 95227 93619 ~Q[Qipound~ l~i~lsectisect Ostracoda
7 1
455 9 1
5464 78 1
6946 2589
billQylhg[ Spa 16 818 12489 10420 GQ[QQQil HQi~ 139 1000 108496 70934 gQ[Qebi secteiifQ[~ sectQiiQi2 ~Q~sectisect Diptera pupae
1 2 1
9 1 182
11 1
781 1561 781
2589 3473 2589
Chironomid larvae 2 182 1561 3473
Mean number of organismssample 714 Standard deviation 284
nean num b er 0 f organlsms m 2 612728 Standard deviation 244249
H= 232 SD= 075 SR= 1 25 J= 063
A-19
STATION 58 Date 1 June 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 138 C No of samples 10
Frequency Density (noI 2 ) Total occurrence
Taxa number (X) X SD
Nematoda 173 1000 148538 47383 Turbellaria 3 300 2576 4147 Oligochaeta 53 1000 45506 32139 ~giQgY2k~g~ ini~[m~Qi~ bQg91YehY2 Yi[~nsect ~Qr~i~Yl m~nl~n~i
26 1
10
600 100 500
22324 859
8586
3391 2 2715
13424 bimnQpound~Q~[ sp ~Q9~m[Y poundgnitYpoundQlysect ~QtQehiYm ~lQni
4 1
46
200 100
1000
3434 859
39496
8295 2715
22243 Chironomid larvae 1 100 859 271 5
Mean number of organismssample 318 standard deviation 103
M b f I 2ean num er 0 organlsms III 273035 Standard deviation 88842
H = 1 99 SD= 065 SR= 1 08 J= 060
A-20
STATION 55 Date 1 June 1984 Depth 27 m Salinity (bottom) 00 ppt Temp era t u r e (b 0 t tom) 140 C No of samples 10
Frequency Density (nom 2 ) Total occurrence
Taxa nueber (X) X SD
Nematoda 157 1000 134800 69524 Turbellaria 9 400 7727 13696 tlHl~lk ~2~~iQH 1 100 859 2715 Oligochaeta 49 1000 42071 32745 ~~iQQysect~gl~ S[l9sect bHbQghQb~~ Yirl~
10 1
400 100
8586 859
12799 2715
tQ[Qpoundls l2lilUsect bilQHSbg[ sp ~QrQQbil nllQisectHarpacticoida
4 7
134 1
400 500
1000 100
3434 6010
115052 859
4434 7069
44742 271 5
sectpoundQUQlls poundsQgn~sect Chironomid larvae
1 1
100 100
859 859
271 5 2715
Hydracarina 1 100 859 2715
Hean number of organismssample 376 Standard deviation 132
M b f 2ean num er 0 organIsms m 322834 Standard deviation 113127
H= 202 SD= 068 SR= 1 40 J= 055
A-21
STATION 45 Date 18 June 1984 Depth 67 m Salinity (bottom) 01 ppt Temperature (bottom) 149 C No of samples 10
Frequency Density (nom2)
Taxa Total nUllber
occurrence ex) i SD
Nematoda 109 1000 93587 3891 7 Turbell ari a 3 200 2576 5795 ~g~tbg limoipoundQl Q~Qni2 fQ(i~2 Oligochaeta ~gigQ~~Y inl[ggi ~Q[QiSY2 moilo Ostracoda
3 2
194 44
7 3
200 200
1000 1000 200 200
2576 171 7
16656B 37778 6010 2576
5795 3620
118364 36020 12831 5795
bimoQampl~n~[2 sp ~Q[QQbiYm lmgoi Harpacticoida sectpoundQQ1202 pound2022Osect Chironomid larvae
68 1 1
113 2
900 100 100
1000 200
58385 859 859
97022 171 7
97627 2715 2715
73976 3620
Mean number of organismssa_pie 550 Standard deviation 371
Mean nUll ber 0 f organIsms 2II 472230 Standard deviation 318519
H= 242 SD= 077 SR= 1 32 Ja 065
A-22
STATION 18 Date 18 June 1984 Depth 34 m Salinity (bottom) 00 ppt Temperature (bottom) 155 C No of samples 10
Frequency Density (nom 2) Total occurrence ----------------shy
Taxa nUlber (Z) X SD
Neutoda 291 1000 249853 138826 Turbellaria 1 100 859 2715 ~~n~~nki~ sectQ~~iQ~2 ~g~ntbg2 limni~Q9 Oligochaeta
1 3
123
100 300
1000
859 2576
105608
271 5 4147
48240 ~~igQY~~~~9 int~(mgii ~Q[~i~~~ mini~ni bimnQ~ylbg(~ Spa
67 6 5
1000 500 400
57526 5152 4293
40485 6003 6071
~Q(QebiYm ~imQnisect Harpacticoida
80 2
1000 200
68688 171 7
41276 3620
sect~QttQini ~2nig~n~i Chironomid larvae
2 4
200 300
171 7 3434
3620 6003
Mean number of organismssample 585 Standard deviation 194
I 2Mean urn b er 0 f organIsms m 502281 Standard deviation 166943
H= 203 SD= 068 SR= 1 20 J= 057
A-23
STATI ON 58 Date 18 June 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (noI 2) Total occurrence
TaKa number (X) X SD
Nellertea 2 100 1717 5430 Nematoda 160 1000 137376 6361 1 Turbellaria 4 400 3434 4434 Oligochaeta 36 1000 3091 0 14705 ~iQQYik~ Q1rQ 4 300 3434 6003 bitnQgl~ebysect YrDsect ~Q[QiY~ ~~nni biQQpoundY1h[ sp ~Q[Qeng ~ilQD Chironomid larvae
3 1 3
61 1
300 100 300
1000 100
2576 859
2576 52375
859
4147 2715 4147
1428 1 2715
Chironollid pupae 1 100 859 271 5
Mean number of organismssample 276 standard deviation 72
nean nurn b er 0 f organIsms I 2 236974 Standard deviation 61410
H = 1 78 SD= 060 SR= 1 23 J= 051
A-24
STATION 55 Date 18 June 1984 Depth 18 m Salinity (bottom)1 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (no 1m2) occurrence
Taxa (X) X SD
Nematoda 160 1000 137376 43967 Turbellaria 1 100 859 271 5 Oligochaeta 61 1000 52375 31985 ~~iQQY~kY~~ int~[mQi~ ~Q[Qipound~l~ m~nini~ biIDnQ~Ylb[s sp
3 3 3
300 300 300
2576 2576 2576
4147 4147 4147
~Q[Q~bi~ ~slIDQni~ Chironomid larvae
85 6
1000 600
72981 5152
34165 4434
Mean number of organismssample 322 Standard deviation 75
2Mean number 0 f organIsms m 276469 Standard deviation 64099
H= 178 5D= 065 SR= 0B4 J= 059
A-25
Frequency Density (no2) occurrence -----------------
Taxa (7) X SD
Nematoda 104 1000 89294 47409 Turbell ar i a 1 100 859 2715 ~~~nQ~sect imni~Q~ tjQQsectQlis flQig~ Oligochaeta
2 1
297
100 100
1000
171 7 859
255004
5430 271 5
146273 ~~i~QYsect~Y~lls ilr2is gQrQi~y~ IDDilDia
24 4
600 300
20606 3434
27212 6003
Ostracoda 2 200 171 7 3620 biDQSy~b~C~ sp M~QYsectisect m~r~~Qi ~QrQeniy QD Harpacticoida
157 1 1 1
900 100 100 100
134800 859 859 859
73197 2715 2715 2715
sectpoundQttQDs SsDQD 113 900 97022 61656
STATION 45 Date 2 July 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) No of samples 10
172 C
Mean number of organismssample 708 Standard deviation 339
M ean num b er f 20 organisms 607889 Standard deviation 290B22
H= 216 SD= 073 SR= 1 27 J= 058
1-26
STATION 18 Date 2 July 1984 Depth 24 WI
Sal inity (bottom) 00 ppt Temperature (bottom) 172 C No of samples 10
--------------------------------~-----------------------------------------Frequency Density (nom2)
Total occurrence Taxa number (7) X SD
Nematoda 202 1000 173437 113532 ~~~nih~sect mnpoundQ~ Oligochleta
4 102
400 1000
3434 87577
4434 54873
~~igQYsect~Y~12 inl~rmgi2 ~Q[~poundYl~ m~ni~nsectisect bimnQpoundylh~[~ Spa
115 4
15
900 300 900
98739 3434
12879
100720 6003 9274
~Q[QQniY~ sect~QDi~ 55 900 47223 40525 Harpacticoida 1 100 859 2715 sectpoundQiiQlD SDg~DEisect Chironomid larvae
2 6
200 400
1717 5152
3620 7240
Hymenoptera 1 100 859 2715 Hydracarina 1 100 859 2715
Mean number of organismssample 508 Standard deviation 253
2Mean num ber 0 f organIsms m 436169 Standard deviation 217580
H= 225 SD= 074 SR= 1 22 J= 063
A-27
STATION 58 Date 2 July 1984 Depth 58 1
Salinity (bottom) 00 ppt Temperature (bottom) IBO C No of samples 10
Frequency Density (no2) Total occurrence
Taxa number ltX) i SD
Nematoda 151 1000 129649 42729 Turbellaria 1 100 859 2715 01 i gochaeta 41 1000 35203 22698 ~~i~e~~~ int~~m~~ 3 200 2576 5795 btbQglYRhY~ Yir~n~ ~e~~ampy mni~niii bimQeamp~tb~ sp ~e~eQhiY ~mQni Chironomid larvae
1 4 2
68 1
100 300 200
1000 100
859 3434 171 7
58385 859
271 5 6003 3620
1557 1 2715
Mean number of organisassample 272 Standard deviation
I 2Mean num ber 0 f organIsms I 233539 Standard deviation 62546
H = 1 69 SD= 061 SR= 099 J= 053
A-28
73
STATION 55 Date 2 July 1984 Depth 15 III
Salinity (bottom) 00 ppt Temperature (bottom) 182 C No of samples 10
Frequency Density (nom2) occurrence
Taxa (X) X SD
Nematoda 184 1()00 157982 5264B Turbellaria 1 100 859 271 5 Oligochaeta ~~iQQ~sect~Y~ll~ n~[~~Qi~ bitnggYQDYsect Yi[~nsect ~QrQipoundM2 m2ni~nsectisect bimnQpoundYn~[2 sp ~QrQQhiM Qni Harpacticoida
91 2 1 B 2
96 2
1000 200 100 500 200
1000 200
78133 171 7 859
6869 171 7
82426 1111
26058 3620 271 5 1890 3620shy
25980 3620
ChirDnomid larvae 5 400 4293 6071 Chironolllid pupae 1 100 859 2715
Mean number of organismssample 393 Standard deviation 53
2t1ean nUllber Df organlsms III 337430 Standard deviatiDn 45080
H= 187 SD= 067 SR= 116 J= 054
A-29
STATION 45 Date 17 Jul y 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (X) X SD
Nematoda 215 1000 184599 45837 ~~n~b~~ imDipoundQ Qe~Qni fllHi2
3 1
300 100
2576 859
4147 2715
Oligochaeta 305 1000 261873 147955 ~~iQQY~k~ in~rm~2i ~Qr~ipoundYl IDniln~i~ Ostracoda
17 1 2
500 100 200
14590 859
171 7
22554 2715 3620
bmnQpound~ihr sp ~QCQQhiY ~lQD~
176 1
1000 100
151114 859
57125 2715
Harpacticoida 4 300 3434 6003 sectQ~~Qn poundnQnai~ Chironomid larvae
91 5
1000 400
78133 4293
61310 6071
Mean number of organismssample 821 Standard deviation 275
M b f 2ean num er 0 organlsms m 70491 1 Standard deviation 236369
H= 215 SD= 073 SR= 114 J= 060
A-30
STATION 18 Date 17 Jul y 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom 203 C No of samples 10
Frequency Density (001 2 Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 339 1000 291065 119140 Turbellaria 3 200 2576 5795 ~~2~b~~ limnipoundQ12Oligochaeta
4 18S
300 1000
3434 161417
6003 89393
~~iQQy~~~ls in~(ID~Qi bim~Qampy~bg(2 Spa
34 16
800 700
29192 1373B
22967 15252
~g(gebi~m ~21mQni2 Harpacticoida
52 3
1000 200
44647 2576
25212 5795
2ampQ11Q1202 ampS02Qg~2i2 Chironomid larvae
18 10
700 700
15455 8586
13904 701 0
Mean number of organi$mssample 667 Standard deviation IBB
H ean nurn b er 1 20 f organIsms m 572686 Standard deviation 161750
H = 1 99 SD= 065 SR= 090 J= 060
A-31
STATION 58 Date 17 July 1984 Depth 55 AI
Salinity (bottom) 00 ppt Temperature (bottom) 197 C No of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nellatoda 173 1000 14853B 66390 Turbellaria 1 100 859 271 5 ~~~n~hu ini~QA Oligochaeta
1 46
100 1000
859 39496
2715 26293
~gipoundQy~~ygl2 in~rJg~i~ b1nQglYRnY~ Yi( Bivalvia
6 2 1
400 200 100
5152 1717 859
8295 3620 271 5
ei~ IDnH~n~i~ 2 200 171 7 3620 Ostracoda 1 100 959 271 5 biIDQHlh~( Spa ~Q(QRbim ~21Qnisect Diptera pupae
1 94
1
100 1000 100
859 80708
859
2715 35332 2715
Heleidae 1arvae 5 500 4293 4525 Chironomid larvae 1 100 859 2715
Mean number of organismssample 335 Standard deviatiDn 113
Mean number of organismsRI2 287631 Standard deviation 97413
H= 1 86 SO= 064 SR= 155 J= 049
A-32
STATION 55 Date 17 July 1984 Depth 18 m Sali nity (bottom) 00 ppt TeAlperature (bottom) 199 C No of samples 10
Frequency Density (nom2 ) occurrence
Taxa (X) x S D
Nematoda 61 1000 52375 33972 Turbellaria 1 100 859 2715 Oligochaeta 24 900 20606 11590 ~~i2QY~k~~1 iOi[2 bimDQ~xlb~r sp ~Q[QQhi~ sectgni~ Chironomid larvae
3 1
38 3
200 100
1000 300
2576 859
32627 2576
5795 2715
19326 4147
Mean number of organismssample 131 standard deviation 54
M b f 2ean num er 0 organIsms 112477 Standard deviation 46757
H= 184 SD= 066 SR= 085 J= 065
bull
A-33
STATION 45 Date 1 August 1984 Depth 58 m Sal i nity (bottoll) 03 ppt Temperature (bottom) 203 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa nUllber (X) X SD
Nematoda 145 1000 124417 52344 Turbellaria 1 100 859 2715 Mmth~sect iHpoundQ~ Q~~Qi ilQ[i9Oligochaeta
5 3
196
500 300
1000
4293 2576
168286
4525 4147
91064 ~igQYsect~~li int9i Ostracoda
2 3
100 300
171 7 2576
5430 4147
bimnQpoundtl sp ~Q[Q2hiY sectlQni~
240 6
1000 600
206064 5152
73526 4434
sectpoundQtQl poundngnai~Helei dae larvae
1862 1
1000 100
1598713 859
966134 271 ~
Mean number of organismssample 2464 Standard deviation 1156
211 ean num ber 0 f organIsms II 2115590 Standard deviation 992518
H= 124 SD= 041 SR= 089 J= 036
A-34
STATION 1S Date 1 August 1984 Depth 24 II
Salinity (bottom) 00 ppt Temperature (bottom) 198 C No of samp I es 10
Frequency Density (nom2) occurrence ---------------- shy
Taxa (X) X S D
Nuertea 1 100 859 2715 Nellatolllorpha 1 100 859 2715 Nematoda 248 1000 212933 108288 Turbellaria 4 400 3434 4434 ~untb~la Hli~g Oligochaeta
4 206
400 1000
3434 176872
4434 75309
~~igQYli~dli i[t~(gi~ ~QtQpound l binQ~ybt2 sp ~2l~bi Q[i ~2tlgtQ(ila tirisect sectpoundQtel poundl9lla Chironomid larvae
10 1
20 205
1 574
9
500 100 800
1000 100
1000 400
8586 859
17172 176013
859 492836
7727
10709 271 5
14021 48104
271 5 150531
13696
Mean number of organismssample 1284 Standard deviation 290
M b f I 2ean nurn er 0 organIsms III 1102442 Standard deviation 2488B5
H= 211 SD= 071 SR= 1 16 J= 057
A-35
STATION 58 Date 1 August 1984 Depth 55 m Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samp 1es 10
Frequency Densi ty _ ltnom2 ) Total occurrence
Taxa number (7) X SD
Nemertea 1 100 859 2715 Nematoda 22 900 18889 15036 Turbellaria 1 100 859 2715 Oligochaeta 19 700 16313 17385 biiQQgl~QhY~ YiCg~~ 2 200 171 7 3620 ~Q[~i~~l~ m2nil~n2i2 ~Q[QehiYm ~lmQni2
4 164
300 1000
3434 140810
6003 103048
Heleidae larvae 8 500 6869 8868
Mean number of organismssample 221 Standard deviation 111
I 2Mean num ber 0 f organIsms m 189751 Standard deviation 95391
H = L 37 SD= 043 SR= 090 J= 046
A-36
STATION 55 Date 1 August 1984 Depth 15 m Salinity (bottoll) 01 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (i ) X SD
Nemertea 1 100 859 2715 Neutoda 122 1000 104749 7394B Turbellaria 4 300 3434 6003 ~~~~~nt~ secte~poundQa~ Oligochaeta
1 118
100 1000
859 101315
2715 61223
~giQgY~k~~l iot~[m~Qi btbQg~2b~ Y[O ~grQipound~ ~nl~ni b~ngpound~tb~[ Spa
3 1 5 1
200 100 500 100
2576 859
4293 859
5795 2715 4525 2715
~Q[QebiYm ~mQoi sect~QttQ~ ~OQOi Heleidae larvae
42 2 2
800 200 100
36061 171 7 171 7
21341 3620 5430
Chironomid larvae 4 400 3434 4434
Mean number of organismssapIe 306 Standard deviation 169
M b f I 2ean nurn er 0 organIsms m 262732 Standard deviation 145101
H = 198 SD= 067 SR= 1 45 J= 054
A-37
~-- --------------~~-------------
STATION 45 Date 17 August 1984 Depth 61 1
Salinity (bottom) 10 ppt Temperature (bottom) 210 C No of samp 1es 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nematoda 240 1000 206064 130213 ~~h~sect limQ tjQ~~Hi~ fQ[i~~ Oligochaeta
31 2
245
400 100
1000
26617 1717
210357
75228 5430
121374 babgglYQbl~ Yi[~sect 1 100 859 2715 Ostracoda 1 100 859 271 5 biQ~xtb~[ Spa ~~Q~~isect ~[pound~Qisect ~Qgebi HQOi
333 2
143
1000 200
1000
28591 4 171 7
1227BO
106553 3620
106860 sectpoundQUg~ poundg~nsectisect 1738 1000 1492247 68441 7
Mean number of organismssample 2736 Standard deviation 944
M b f I 2ean num er 0 organlslls m 2349130 Standard deviation 810600
H= 172 SD= 056 SR= 079 J= 052
A-38
STATION 18 Date 17 August 1984 Depth 27 III
Sal i ni ty (botto) 01 ppt Temperature (bottom) 214 C No of samples 10
Frequency Density (nom 2 ) occurrence
Taxa (X) X SD
Nematoda 186 1000 159700 62468 ~tgt SPa 2 100 171 7 5430 Turbellaria 8 400 6869 8868 ~~ntbg2 imnipoundQ 12 700 10303 11304 Oligochaeta 283 1000 242984 90509 ~~iQQY~~Y~lls inlgtmggisBivalvia
4 1
400 100
3434 859
4434 271 5
~Qt~i~Y nilnsectisectbimnQpoundttbg[s SPa ~QtQQbi~ islmQDi2
1 17
286
100 900
1000
859 14596
245560
271 5 10747 83461
sectpoundetteln poundDsggnsectisect Chironomid larvae
526 4
1000 3Q0
451624 3434
179610 6003
Mean number of organismssapIe 1330 Standard deviation 162
Mean nurn ber I 20 f organIsms m 1141938 Standard deviation 139389
H= 214 SD= 073 SR= 1 06 J= 060
A-39
STATION 58 Date 17 August 1984 Depth 55 II
Salinity (bottom) 01 ppt Temperature (bottom) 220 C ND of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (7) x S D
Nematoda 68 1000 58385 27689 Turbellar i a 4 200 3434 8295 Oligochaeta 19 800 16313 13084 ~~i~Q~k~~l~ in~~[m~i bitUQ9Y2bYa Yi[~na Bivalvia
3 3 4
300 300 300
2576 2576 3434
4147 4147 6003
gQ[QipoundYl~ mnilDa 1 100 859 2715 binQpoundY~[ sp gQ[Q2UY a~mgnia sect~Qtgl~n ~n~~ni
2 338
6
100 1000 400
171 7 290207
5152
5430 56636 7240
Mean number of organismssample 448 Standard deviation 72
W b f 2lean num er 0 organlsms II 384653 Standard deviation 61988
H = 1 27 SD= 041 SR= 1 02 J= 038
A-40
STATION 55 Date 17 August 1984 Depth 18 m Salinity (bottom) 00 ppt Temperature (bottol) 223 C No of samples 10
Frequency Density (nom 2 ) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 291 1000 249853 118104 Turbellaria 1 100 859 2715 M~ntb~ mni~Q Oligochaeta
1 47
100 1000
859 40354
2715 28347
~~iQQ~sectkY~ll int~[m~gi bitbQQ1YSDY Yi(gn Bivalvia
25 12
6
900 500 400
21465 10303 5152
1231 0 18459 7240
~Q~2ipoundY mnil~ni Ostracoda
11 8
400 600
9445 6869
12442 6773
bmnQpoundYb~r~ SPa 52 1000 44647 19746 ~QrQsbY lmgnisectsQiielo snQ~ni~ Chironomid larvae
43 5
15
1000 400 BOO
36920 4293
12879
21436 6071 8344
Mean number of organismssample 517 Standard deviation 174
M b f I 2ean num er 0 organlsms m 443896 Standard deviation 149431
W = 228 SD= 065 SR= 1 33 J= 062
A-41
STATION 45 Date 29 August 1984 Depth 55 III
Salinity (bottom) 07 ppt Temperature (bottom) 199 C No of samples 10
Frequency Density (noI 2) Total occurrence
Taxa number (X) X SD
Nematoda 192 1000 164851 98380 ~sntbsect limnipoundQlDligochaeta
2 198
200 1000
171 7 170003
3620 67339
~Q[eipoundYls msniln~isect Ostracoda
1 4
100 400
859 3434
2715 4434
bimnQpoundytb[s Spa gQ[Qeniy sect21QOi~ sectpoundQttQlsO poundsOsggOi
164 87
2468
1000 1000 1000
140810 74698
2119025
39283 39460
840890
Mean number of organismssample 311 6 Standard deviation 101 1
ill b f 2nean nUll er 0 organIsms 2675398 Standard deviation 8682B8
W= 116 SD= 036 SR= 060 J= 039
A-42
STATION 18 Date 29 August 1984 Depth 30 bull Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samples 10
Total Frequency occurrence
Densi ty 2
(nom )
Taxa number (~ ) x S D
Nematoda 150 1000 128790 28905 Turbellaria 7 400 6010 9096 ~nh imni~Qj Oligochaeta ~~i~2Y~k~~1 ini~CIDgii bih2g~Qb~ Yi(~U2 Bivalvi a
B 145
1 1 2
600 1000
100 100 200
6869 124497
859 859
171 7
677 3 84732
271S 2715 3620
~Q[Qi~yli miDllgni bimn2pound~ih~C sp ~QtQehiY imQUia Harpacticoida
7 7
265 1
500 300
1000 100
6010 601 0
227529 859
8145 10747
139462 2715
sect~QtiQDi ~Q~Q~i~ Chironomid larvae
2471 2
1000 200
2121601 171 7
1063112 3620
Mean number of organismssample 3067 Standard deviation 121 9
2Mean number 0 f organIsms m 2633326 standard deviation 1046718
H = 1 09 SD= 034 SR= 1 04 J= 029
A-43
STATION 58 Date 29 August 1984 Depth 55 111
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (noI 2 ) Total occurrence -----------------
Taxa nUllber (X) X SD
Nemertea 4 400 3434 4434 Nuatoda 64 1000 54950 25016 Turbellaria 9 400 7727 11047 ~Hl~b limli~Q19 Oligochaeta
1 37
100 1000
859 31769
2715 19006
i~Qyh il(~~ bHtlQSlheln Yl Bivalvia
4 4
20
200 300 400
3434 3434
17172
8215 6003
26541 ~e(ijY l bQ~dlH sp
26 1
700 100
22324 859
25662 2715
~Q[QQhil iQ sectjgUell HD Heleidae larvae
418 20
1
1000 800 100
358895 17172
859
129443 12799 271 5
Mean number of organismssample 609 Standard deviation 175
nean num b er 0 f organIsms 1 111 2 522887 Standard deviation 150164
H= 176 SD= 051 SR= 1 30 J= 047
A-44
I I
I
I
STATION SS
Date 29 August 1984 Depth 21 1
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (no2) Total occurrence
Taxa nUllber (X) x S D
Nematoda ISO 1000 128790 37969 Turbellaria 1 100 859 271 5 Oligochaeta 48 1000 41213 16088 ~i~g~sect~~l iQ~~mgi bi~QQg~gb~sect ~i~nsect
10 14
600 600
eSB6 12020
9050 14137
Bivalvia 4 200 3434 7240 ~Q[Q~Yl niQaa Ostracoda
15 7
700 SOO
12879 6010
15806 7069
bmQg~~~b~ SPa 14 800 12020 8295 ~g[gaby mgni sect~g~~Qn ~ngnai Chironomid larvae
IB4 25 9
1000 900 700
157982 21465
7727
35563 16810 6335shy
Mean number of organismssample 481 Standard deviation B6
2Mean number 0 f organlsms m 412987 Standard deviation 74131
H= 24S SD= 074 SR= 1 23 J= 068
A-45
STATION 45 Date 14 September 1984 Depth 61 11
Salinity (bottom) 03 ppt Temperature (bottom) IB4 C No of samples 10
---------------------------------~----------------------------------------
Taxa TotalnUlllDer
Frequency occ~~~ence
Density (no 2) -----X-------sect7B
Nematoda 189 1000 162275 85233 t1tQ SPa
Turbellaria 2 2
200 100
171 7 171 7
3620 5430
~~~nIng limoifQl t1QQQDi~ flQriQ Oligochaeta
5 19
142
400 800
1000
4293 1631 3
121921
6071 12442 30504
~QQifYl mDl~D bimoQpoundt1hgr Spa Cumacea
19 184
2
800 1000 200
1631 3 157982
171 7
130B4 69541 3620
~Q[QnniYm ~~lmQDi Harpacticoida
118 1
1000 100
10131 5 B59
43367 2715
sectfQIIQD fOQgO Chironomid larvae
1780 1
1000 100
1528308 859
673586 2715
Mean number of organismssample 2464 Standard deviation 874
M ean num b er f 20 organlsms 2115590 Standard deviation 750305
H= 151 SD= 046 SR= 1 07 J= 041
A-46
STATION 18 Date 14 September 1984 Depth 21 III
Salinity (bottom) 01 ppt Temperature (botto) 182 C No of samples 10
Frequency DenSity (nom 2 ) Total occurrence ---------------- shy
Taxa nUlDber (i) X SD
Nemertea 1 100 859 271 5 Nematoda 186 1000 159700 44925 Turbellaria 16 400 13738 20717 ~~Dth~~ limni~Ql Oligochaeta
13 55
700 900
11162 47223
9096 30085
~Q~ei~Yl nil~Qi~ 17 900 14596 7069 bimDg~lbg[ Spa b 500 5152 6003 ~Q[Q2niY ~lgQi~ Harpacti coi da
562 2
1000 200
482533 171 7
136766 3620
sectpoundQttQ~Q~ ~n~ni 791 1000 679153 324290
Mean number of organismssample 1649 Standard deviation 447
I 211ean nUll ber 0 f organIsms I 1415831 Standard deviation 384136
H= 179 SD= 064 SR= 084 J= 054
A-47
STATION 58 Date 14 September 1984 Depth 58 III
Salinity (bottom) 01 ppt Temperature (bottom) 191 C No of sampl es 10
-------------------------------------------~------------------------------Frequency Density (nom 2 )
Total occurrence Taxa number eX) X SD
Nemertea 1 100 859 2715 Nematoda 55 1000 47223 18658 Turbellaria 10 500 8586 11448
1 100 859 2715 Oligochaeta 41 1000 35203 17850 ~~iQQ~~gll iu1g[m~i ~Q[Q~Yl nilD bimnQ~Y~h[ Spa ~Q[Q~hiYm lmgui sectpoundQilg1D poundU2D Chironomid larvae
4 10
2 277
23 4
100 500 200
1000 700 300
3434 8586 171 7
237832 19748 3434
10861 11448 3620
50561 21051 6003
Mean number of organismssample 428 Standard deviation 51
M b f 2ean num er 0 organIsms III 367481 Standard deviation 43743
H= 179 SD= 055 SR= 114 J= 052
A-48
I I
STATION SS Date 14 September 1984 Depth 21 II
Salinity (bottom) 01 ppt Temperature (bottom) 190 C No of samples 10
--------------------------------------------------------------------~-----
Frequency Density (no1I2) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 102 1000 87577 39200 Oligochaeta 34 700 29192 31142 ~iQ2Y~y1 int(mgi~ bithQgl~en~ Yi(gDsect ~Q(~i~Y m~DilgDsecti~ bimDQamp~1h(sect sp ~2(QQhiY slmQD 2poundQiiQlsD ~sD~g~nsecti Chironomid larvae
36 18 16 17
100 16
3
1000 600 800 700
1000 800 300
30910 15455 13738 14596 85860 13738 2576
157BO 20953 10078 14621 32126 10861 4147
Mean number of organismssample 342 Standard deviation 97
2Mean nUllber 0 f organlsms m 293641 Standard deviation 83617
H= 262 SD= 079 SR= 095 J= 083
A-49
Appendix B--Sediment particle size and organic content of the Cathlamet Bay
benthic invertebrate sites 13 March through 14 September
1984
iii
1
Station 18a 48 54 57
Survey 1 1 1 1
Month March March March March
Day 13 13 13 13
Particle size (mm) Phib Percent by weight
gt 40 -2 000 000 000
20- 40 -1 000 000 000
10- 20 0 000 009 000
05- 10 1 018 1079 032
025- 050 2 545 7583 2468
0125- 025 3 8731 1225 6783
00625-0125 4 491 037 657
lt0625 (5-12) 216 067 060
Organic Content 160 116 128
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
b Phi= -log2(sediment particle diameter in mm)
B-1
Station 18a 48 54 57
Survey 2 2 2 2
Month April April April April
Day 5 5 5 5
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 003 093 000
05shy 10 1 005 31 75 023
025shy 050 2 087 5904 2368
0125- 025 3 6316 750 7155
00625-0125 4 3056 026 427
lt0625 (5-12) 533 052 028
Organic Content 081 077 065
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-2
Station 45 55 58
Survey 3 3 3 3
Month April April April April
Day 18 18 18 18
Particle size (mm)
gt 40
Phi
-2
Percent by weight
000 000 000
20shy 40 -1 000 000 000
10shy 20 0 005 009 004
05shy 10 1 010 027 013
025shy 050 2 015 095 225
0125- 025 3 097 536 6111
00625-0125 4 453 2821 2205
lt0625 (5-12) 9420 6511 1442
Organic Content 31 42 14
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-3
Station 18a 45 55 58
Survey 4 4 4 4
Month May May May May
Day 4 4 4 4
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 021
05shy 10 1 000 065 063
025shy 050 2 012 370 230
0125- 025 3 091 4099 4696
00625-0125 4 322 3650 3052
lt0625 (5-12) 9575 1810 1939
Organic Content 330 180 160
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-4
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
5
May
17
000
000
005
016
217
5862
2729
1170
100
45 55 58
5 5 5
May May May
17 17 17
Percent by weight
000 000
000 000
005 008
113 031
325 274
1903 5613
2784 2401
4870 1672
240 110
000
000
000
010
020
079
397
9494
390
B-5
Station 18al 45 55 58
Survey 6 6 6 6
Month June June June June
Day 6 6 6 6
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 020
05shy 10 1 005 051 027
025shy 050 2 005 301 1 79
0125- 025 3 074 3189 5404
00625-0125 4 599 4118 2885
lt0625 (5-12) 9317 2332 1485
Organic Content 340 240 150
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-6
Station
Survey
Month
Day
Particle size Cmm) Phi
gt 40 -2
20shy 40 -1
10shy 20 a
05shy 10 1
025shy 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
7
June
18
000
000
005
029
138
3917
4143
1768
180
45
7
June
18
55 58
7 7
June June
18 18
Percent by weight
000
000
000
010
020
080
427
9464
310
000 000
000 000
000 007
011 022
057 190
957 5286
3023 2642
5957 1853
1 70 110
B-7
Station 18al 45 55 58
Survey 8 8 8 8
Month July July July July
Day 2 2 2 2
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 006 002 006
05shy 10 1 006 0l3 023
025shy 050 2 017 088 171
0125- 025 3 074 2712 5365
00625-0125 4 552 3892 3081
lt0625 (5-12) 9345 3294 l354
Organic Content 410 210 160
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-8
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
9
July
17
000
000
003
013
130
4294
4434
1127
130
45
9
July
17
Percent
000
000
000
006
012
051
046
9885
290
55
9
July
17
by weight
000
000
019
048
091
628
3616
5597
030
58
9
July
17
000
000
004
022
158
5017
3148
1650
140
B-9
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18al
10
August
1
45
10
August
1
55
10
August
1
58
10
August
1
Percent by weight
000 000
000 004
001 004
009 018
018 088
098 306
049 2510
9824 7070
000
005
045
763
3604
4495
932
156
100 190 060
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-10
Station 18 45 55 58
Survey 11 11 11 11
Month August August August August
Day 17 17 17 17
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000 000
20- 40 -1 005 000 000 000
10- 20 0 021 003 000 210
05- 10 1 064 009 000 159
025- 050 2 226 027 045 2656
0125- 025 3 3259 131 712 3719
00625-0125 4 4327 195 1737 1159
lt0625 (5-12) 2098 9635 7506 2097
Organic Content 210 300 160 100
Ii I
B-11
Station
Survey
Month
Day
Particle size (mm) Phi
gt40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
12
August
29
000
000
012
046
186
3465
4498
17 93
241
45
12
August
29
55 58
12 12
August August
29 29
Percent by weight
000
000
002
009
026
118
189
9656
540
000 000
000 000
003 011
011 028
055 1013
859 5033
1596 1827
7476 2089
1 70 120
B-12
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
_-------------------- shy
B-13
15 ppt (Chapman and Brinkhurst 1980) This species appears to be a useful
salinity indicator and future benthic work should identify and enumerate
this species Due to time and taxonomic expertise requirements only the
oligochaete species Vejdovskyella intermedia was enumerated Salinity
tolerances of this species are unknown
Since intersti tial salinities do not vary dielly as do salini ties in
the water column (Sanders et al 1965) interstitial salinities should have
been measured Al though many infauna species may be exposed to overlying
water because of activity andor tubes (exCorophium spp) many benthic
invertebrates are dependent on interstitial salinity levels Measurements
of interstitial salinities are necesssary to determine benthic infauna
sensitivity to salinity intrusion
Finally there appeared to be a large amount of within station
variability in the sediment texture particularly at Stations 55 and 58
The sediment at Station 55 ranged from a very fine sand to almost all clay
The sediment texture variability at Station 58 was a result of the uS
Coast Guard moving Can 5 to a new location forcing us to estimate the
previous location of our station
ACKNOWLEDGMENTS
We wish to thank Maurice Laird Nick Zorich Larry Davis Roy Pettit
Edward Koller and David Miller for their assistance in developing the
sampling device and collecting the samples We express special thanks to
Sandy Lipovsky Thomas Moylan and Susan Newhouse for helping sort and
identify the invertebrates
9
LITERATURE CITED
Chapman P M and R O Brinkhurst
1980 Salinity tolerance of some selected aquatic oligochaetes Internat
Rev der Gesamten Hydrobio1gie 65499-505
Chapman P M and R O Brinkhurst
1981 Seasonal changes in interstitial salinities and seasonal movements
of subtidal benthic invertebrates in the Fraser River estuary BC Est
Coast Shelf Sci 1249-66
Gray J S and H Christie
1983 Predicting long-term changes in marine benthic communities Mar
Ecol Prog Sere 1387-94
Kinne O
1966 Physiological aspects of animal life in estuaries with special
reference to salinity Neth J of Sea Res 3 227-244
Margalef R
1958 Information theory in ecology Gen Syst 336-71
McCabe G T Jr W D Muir R L Emmett and J T Durkin
1983 Interrelationships between juvenile sa1monids and nonsalmonid fish
in thl Columbia River estuary Fish Bu11U S 81(4)815-826
Pie10u E L
1966 The measurement of diversity in different types of biological
collections J Theor BioI 13131-144
Sanders H L P C Mange1sdorf and G R Hampson
1965 Salinity and faunal distribution in the Pocasset River
Massachusetts Limno Ocean 10216-229
Shannon L E and W Weaver
1963 The mathematical theory of communication Univ of Illinois Press
Urbana Ill
10
Simpson E H
1949 Measurement of diversity Nature 163688
11
APPENDIX A--Descriptive summary of benthic invertebrate data collected in
Cathlamet Bay Oregon during March through September 1984
STATION 18 Date 13 March 1984 Depth 46 m Salinity (bottom) 11 ppt Temperature (bottom) 67 C No of samples 15
Frequency Density (nom 2 ) Total occurrence
Taxa number (7) X SD
Nemertea 2 67 1145 4434 Nematoda 134 1000 76702 33169 Turbellaria 22 667 12593 15854 ~~n~b~~ imnpoundQ 31 Oligochaeta 486
933 17744 1468 1 100() 278186 138779
~QtQif~12 mnil~nsectisect 24 Ostracoda 39
933 13738 8462 800 22324 17715
~Q[QQbiYm ~lmQni~ 74 867 42358 38B70 EQntQIH~i2 Qyi 1 EQri gnQQn 1 Harpacticoida 7
67 572 2217 67 572 221 7
333 4007 7159 Insecta 2 67 1145 4434 Chironomid larvae 20 667 1144 B 10090 Collembola 95 867 54378 82588 Hydracarina 1 67 572 221 7
Mean number of organismssample 626 Standard deviation 19 1
M ean num b er 0 f 2organIsms III 537484 Standard deviation 163579
H= 237 so= 069 SR= 1 42 J= 061
A-l
STATION 48 Date 13 March 1984 Depth 107 m Salinity (bottom) 05 ppt Temperature (bottom) bB C No of sampl es 15
Frequency Densi ty (nom 2 ) Total occurrence
Taxa number (7) X SD
Nemertea 31 6b7 17744 1849 1 Nematoda 38 667 21751 22685 Oligochaeta 4 133 2290 6859 ~QQpound12 2nil~nsectisect 31 Ostracoda 1
667 17744 29648 67 572 221 7
~Q9~~[~ spp 1 ~Q[Q2l ~~lQnisect 1 ~Q2sectiQisect sectisect 4 Harpacticoida 1
67 572 2217 67 572 221 7
200 2290 5097 67 572 221 7
Insecta 2 133 1145 3021 Diptera adult 1 67 572 2217 Collembola 24 467 13738 30923
Mean number of organismssample 93 Standard deviation 59
Mean number of organismsm2 795b4 Standard deviation 50740
H= 255 SD= 079 SR= 1 55 J= 071
A-2
STATION 54 Date 14 March 1984 Depth 177 m Salinity (bottom) 00 ppt Temperature (bottom) 66 C No of samples 15
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nemertea 47 1000 26903 14096 Nematoda 7 267 4007 9102 Turbellaria 9 333 5152 1114B Oligochaeta 11 333 6296 10989 Gastropoda 1 67 572 2217 ~Q(Qi~Yl mnil~n2i~ Ostracoda
199 3
1000 200
11390B 171 7
97165 3555
gQ[Qehiy sectlmQnisect Harpacticoida
3 1
200 67
171 7 572
3555 221 7
Heleidae larvae 29 867 16600 10989 Chironomid larvae 2 133 1145 3021 Collembola 2 67 1145 4434
Mean number of organismssample 209 Standard deviation 103
2Mean number 0 f organIsms m 179734 Standard deviation 88247
H = 1 86 SD= 056 SR= 1 33 J= 052
A-3
STATION 57 Date 13 March 1984 Depth 91 m Salinity (bottom) 00 ppt Temperature (bottom) 63 C No of sampl es 15
Frequency Densi ty (no 81 2) Total occurrence
Taxa number (X) X SD
Nemertea 27 667 15455 13459 Nematoda 8 400 4579 6381 Turbellaria 4 200 2290 5097 Oligochaeta 8 400 4579 6381 ~g[gipound~l mnilui Ostracoda
1 1
67 67
572 572
2217 2217
~Qgml[a spp 1 67 572 2217 ~Q[Qeni~m lmQnisect Harpacticoida
2 1
133 67
1145 572
3021 221 7
Insecta 3 67 171 7 b651 Chironomid larvae 1 b7 572 221 7 Collembola 37 400 21179 65700 Hydracarina 1 67 572 221 7
Mean number of organismssample 63 Standard deviation 82
Mean number of organismsm2 54378 Standard deviation 70029
H= 253 SD= 075 SR= 1 83 J= 068
A-4
STATION 18 Date 5 April 1984 Depth 30 II
Salinity (bottoll) 00 ppt Temperature (bottom) 90 C No of samples 15
Frequency Densi ty (no1I 2) Total occurrence
Taxa number (i ) If S D
Nemertea 11 bOO 6296 6042 Nematomorpha 2 133 1145 3021 Nuatoda 119 1000 6811 6 50947 Turbellaria 20 600 11448 13640 ~~~nin~sect liIDni~Q12 Oligochaeta
33 481
1000 1000
18889 275324
10364 142326
~Q~Qi~Yl m2nil~ni2 23 600 13165 1371 7 Ostracoda 33 933 18889 10861 gQ(QQrriYID sect2mQnisectHarpacti coi da
38 7
933 133
21751 4007
13329 13328
Chironomid larvae 16 667 9158 8868 ColI embola 1 67 572 2217
Mean number of organismssample 523 Standard deviation 227
M b f 2ean num er 0 organIsms m 448762 Standard deviation 194508
H= 202 SD= 059 SR= 114 J= 0S6
A-5
STATION 45 Date 18 April 1984 Depth 64 III
Salinity (bottom) 00 ppt Temperature (bottom) 95 C No of samples 15
Total Frequency occurrence
Density (noI 2 )
Taxa number (X) X SD
Nematoda 171 1000 97890 92277 tyg~ sp Turbellaria
1 29
67 600
572 16600
221 7 23506
H~nng~ imDi~g tQQsectQl fg~ig Oligochaeta ~Q[Qi~Y2 m2niD~i Ostracodamiddot
9 41
367 42
100
400 1000 1000 800
1000
5152 23469
210071 24041 57240
781 5 13563
100542 19254 43134
~Q[Qeniym amQnisectHarpacticoida Heleidae larvae
37 2049
1
933 1000
67
21179 117284B
572
189B5 616612
221 7 Chironomid larvae 3 200 171 7 3555 Collembola 1 67 572 221 7 Insect parts 1 67 572 221 7
Mean number of organismssample 1901 Standard deviation 864
b f 2nean num er 0 organIsms m 1632485 Standard deviation 741931
H = 1 52 SD= 046 SR= 1 13 J= 040
A-6
STATION 18 Date 18 April 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom) No of samples 15
Frequency Density (nom2) Total occurrence
Taxa nueber (X) x s D
Nemertea 13 533 7441 9663 Nematomorpha 3 200 171 7 3555 Nematoda 195 1000 111618 63675 Turbell ari a 9 467 5152 6326 ~~ni~~ i~ni~Ql~ 30 867 17172 129B1 Oligochaeta 580 1000 331992 108880 ~QC~i~Ml~ m~nil~n~isectOstracoda
28 18
1000 667
16027 10303
11179 10364
~Q[Q~~iYm sect~Qni2 sect~ci~ gniQQnHarpacticoida
105 1
17
1000 67
400
60102 572
9731
25553 2217
19970 Chironollid larvae 16 667 9158 8B6B
Hean number of organismssample 677 Standard deviation 199
M ean num b I 2er 0 f organIsms AI 580986 Standard deviation 171095
w = 202 SD= 062 SR= 1 10 J= 056
95 C
A-7
STATION 58 Date 18 April 1984 Depth 67 m Salinity (bottom) 00 ppt Temperature (botto) No of samples 15
Frequency Density (nom2) Total occurrence
Taxa number (~) X SD
Nemertea 62 933 35489 26338 Nematoda 224 1000 128218 49903 Turbellaria 9 600 5152 4354 ~nt~sect imni~Q Oligochaeta
1 79
67 1000
572 45220
2217 23506
bnQgYRhY~ Yi~~nE ~Q(~i~Y nil~ni Ostracoda
2 10 19
67 533 600
1145 5724
10876
4434 6214
10989 ~Q[QeniY sectQOiHarpacticoida
30 2
B67 133
17172 1145
12142 3021
Heleidae larvae 6 333 3434 5430 Chironomid larvae 9 400 5152 7B1 5 Chironomid pupae 2 133 1145 3021
Mean number of organismssample 303 Standard deviation 94
I 11 ean num ber 0 f organlsms 2 260442 Standard deviation 81043
H= 233 SO= 070 SR= 1 36 J= 063
97 C
A-B
Frequency Density (nolm 2) Total occurrence -----------------
Taxa number (7) X SD
Nemertea 16 467 9158 10989 Nematoda 266 1000 152258 54541 Turbellaria 23 600 13165 15518 ~l~nH ~Q~iQH 2 133 1145 3021 Oligochaeta 181 1000 103604 56532 bi~hQg~Qn~~ ~it~l~ ~QtQifg mli~lsectisectOstracoda
3 59 15
200 1000 733
1717 33772 8586
3555 23054
7256 ~Q[QQhiY HmQtlsect ~Q[QehiYm sect21tlfQ[lg EQlQQQt~i hQ~i
466 3 1
1000 200 67
266738 171 7 572
75094 3555 221 7
Harpacticoida 30 400 17172 40402 Chironomid larvae 10 533 5724 6214
Mean number of organismssa_pIe 717 Standard deviation 143
I 2Mean number 0 f organlsms m 615330 Standard deviation 122532
H= 226 SO= 072 SR= 119 J= 061
STATION 55 Date 18 April 1984 Depth 30 1ft
Salinity (bottom) 00 ppt Temperature (bottom) 93 C No of SaIIples 15
A-9
STATION 45 Date 4 Hay 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 103 C No of samples 10
Frequency Density (noI2) Total occurrence ---------------- shy
Taxa number (Xl X SD
Neutoda 269 1000 230963 167296 Turbellaria 1 100 859 2715 ~u~yuti Q~iQ ~Ub imni~Q
1 2
100 100
859 171 7
2715 5430
j2~Qn flec Oligochaeta
28 169
BOO 1000
24041 145103
19326 74351
~igeYk~ll iulCIDai ~Q(Qi~Y uini Ostracoda
32 4 5
aoo 400
400
27475 3434 4293
22463 4434 6071
biQQ~~tbt sp ~e(QQbYm mQoi sectampQeD ~nQDisect Chironomid larvae
25 2
578 2
900 200
1000 200
21465 1717
496271 171 7
15279 3620
293820 3620
Mean number of organismssample 111 8 Standard deviation 522
11 b f I 2ean num er 0 organIsms m 95991 5 Standard deviation 447842
H= 193 SD= 065 SR= 118 J= 052
A-10
STATION 18 Date 4 Hay 1984 Depth 34 II
Salinity (bottom) 00 ppt Temperature (bottom) 104 C No of saMples 10
Frequency Density (noI 2 ) occurrence ----------------shy
Taxa (X) X SD
Nemertea 10 600 8SB6 10709 Nuatoda 153 1000 131366 47899 Turbellaria 8 600 6869 6773 ~n1b limnpoundQl Oligochaeta
11 147
700 1000
middot9445 126214
9449 6231 7
~i~g~kXl in1(m~i ~g(2iY OiOi Ostracoda
86 4 1
900 300 100
73840 3434 859
61543 6003 2715
bimoQpoundx1b( sp ~2(QQbiYm mgoiDi ptera adult
3 57
3
300 900 300
2576 48940
2576
4147 21815 4147
Chironomid larvae 4 300 3434 6003 Chironomid pupae 1 100 859 2715
Hean nUMber of orQanismssample 489 Standard deviation 160
b f 2nean nUll er 0 organIsms II 418997 Standard deviation 137721
H= 243 SD= 076 SR= 1 34 J= 066
A-l1
STATION 5B Date 4 Hay 1984 Depth 61 bull Salinity (botto~) 00 ppt Temperature (bottom) 110 C No of suples 10
Frequency Density (nom 2) Total occurrence ---------------- shy
Taxa number (X) X SD
Neertn 41 1000 35203 21206 Nematoda 211 1000 181165 53305 Turbellaria 4 200 3434 7240 Oligochaeta 89 1000 76415 32240 ~i~2~~~11~ iU1(~i~bi1begygny YitQ ~e(biYl ~OiDi OstracDda
4 3
20 1
400 200 BOO 100
3434 2576
17172 859
4434 5795
19829 2715
biue~1bt~ sp ~2(egniY Imeoi sectg11g1O OdD Helei dae larvae
5 32
1 1
400 900 100 100
4293 27475
859 859
6071 18010 2715 2715
Chironomid larvae 7 400 6010 9096
Mean number of organismssample 419 Standard deviation 93
b f 2ean nUll er 0 organIsms m 359753 Standard deviation 79875
H= 221 SD= 068 SR= 138 J= 060
A-12
Frequency Density (nolm 2) occurrence -----------------
Taxa (X) X SD
Nemertea 23 900 1974S 15171 Neutollorpha 1 100 859 271 5 Nellatoda 269 1000 230963 69923 Turbellaria 10 600 8586 991 4 ~~xYnki Q~ampiQ 4 300 3434 6003 ~nb limnipoundQl Oligochaeta
1 79
100 1000
859 67829
2715 40363
~i~Q~kXl io[~i biDe9XQDX ~i[~OBi valvi a
11 3 1
800 300 100
9445 2576 859
6335 4147 271 5
~Q[~poundY mnil~n bimoQampXD[ sp ~Q[QabiY lQO Harpacticoida
18 2
159 1
700 200
1000 100
15455 171 7
135659 859
13904 3620
54272 2715
Chironomid larvae 2 200 171 7 3620 Trichoptera larvae 1 100 859 2715
STATION 55 Date 4 May 1984 Depth 21 m Salinity (bottom) 00 ppt Temperature (bottom) 107 C No of suples 10
Mean number of organismssamples 594 Standard deviation 147
Mean number of organismsm2 501422 Standard deviation 126525
H= 219 aD= 069 SR= 1 63 J= 055
A-13
STATION 45 Date 17 May 1984 Depth 61 m Sal i ni ty (bottom) 01 ppt Temperature (bottom) 121 C No of sampl es 10
Frequency Total occurrence
Taxa nUlllber (7)
NelDertea 1 100 859 2715 Nematoda 163 1000 139952 127996 Polychaeta 1 100 859 2715 ~~~n~h~ imni~Qs Hobsonia florida
2 6
200 600
171 7 5152
3620 4434
Oligochaeta 329 1000 282479 13291 8 ~~lQQYsectk~~12 in~~rmQi 57 900 48940 33142 ~Qr~ipound~2 ffi2niDi 6 500 5152 6003 Ostracoda 5 200 4293 10898 bimDg~yth( SPa 13 600 11162 12176 ~Q(Qebi~m sectQDisect Harpacticaida
2 2
200 100
1717 1717
3620 5430
2poundQttQD poundDQDsectisectDiptera adult
296 1
1000 100
254146 859
172633 271 5
Mean number of organismssample 884 Standard deviation 326
b f I 2nean num er 0 organlss m 759002 Standard deviation 280131
H= 209 SD= 071 SR= 1 33 J= 055
A-14
STATION 18 Date 17 May 1984 Depth 30 m Salinity (bottom) 00 ppt Temperature (bottom) 122 C No of samples 12
Frequency Density (nom2) Total occurrence -----------------
Taxa number (X) X SD
Nematoda 50 833 35775 22815 ~ntb limnipoundQl 3 Oligochaeta 97
250 833
2147 69404
3883 48495
~igQ~~k~ intr~ 27 ~QrQipoundY mnin~i~ 5
667 333
19319 3S7S
19068 5740
Ostracoda 1 83 716 2479 bimnQpound~nr sp 5 ~Q(Q~bY ~mQni S4 ~Q(Q~niY ~QinipoundQ(n 3
333 833 250
3578 60102
2147
5740 43780 3883
fgnQ2Q(i bQ~i 1 sectpoundQtgO poundnQn~i 2 Chironomid larvae 4
83 167 250
716 1431 2862
2479 3342 5592
Mean number of organismssample 235 Standard deviation 116
nean nURl b er 0 f organlslls II 2 201771 Standard devi ati on 99221
H= 236 SD= 075 SR= 1 35 J= 066
A-15
STATION 58 Date 17 May 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) 123 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nemertea 2 100 171 7 5430 Nematoda 75 1000 64395 34404 ~~2Qih~a limQi~Q 2 200 171 7 3620 Oligochaeta 60 1000 51516 33376 ~~igQY~~~12 iQ~[~~gi 2 200 171 7 3620 bitQQ9~Bh~sect Yr~Qsect 3 200 2576 579~
gQ[Qi~Yl ID2Dil~nsectisect Ostracoda
6 6
500 400
5152 5152
6003 8295
binQ~~nr[ sp gg[QQOYm mQQsect sect~QttQn 5n2Q~nsectia Chironomid larvae
2 34
1 1
200 1000
100 100
171 7 29192
859 859
3620 12927 271 5 2715
Mean number of organismssample 194 Standard deviation
2Mean nurn ber 0 f organIsms fA 166568 Standard deviation 56259
H= 225 SD= 072 SR= 1 45 J= 063
A-16
66
STATION 55 Date 17 May 1984 Depth 24 II
Salinity (bottom) 00 ppt Telllperature (bottom) 126 C No of samples 10
Total Frequency occurrence
Taxa nUllber (X) X SD --------------------------------------------------------------~-----------
Nematollorpha 2 200 171 7 3620 Nematoda 63 1000 54092 35297 Oligochaeta 94 1000 80708 44004 ~~iQQY~k~~l iQt~(m~Qi bitnQg~Qh~~ Yi[~Q gQ[QipoundY~ mni~Q~i Ostracoda
10 9 4 2
600 800 300 100
8586 7727 3434 171 7
9050 4874 6003 5430
bimnQ~~ln~[e sp ~Q(QQbiYm mQD ~Q[QQbiYm 2inipoundQ[n~ Chironomid larvae
6 142
3 1
600 1000 200 100
5152 121921
2576 859
4434 50682 5795 2715
Mean number of organismssample 336 Standard deviation 62
2Mean num ber 0 f organisms m 288490 Standard deviation 53421
H= 214 SD= 071 SR= 119 J= 062
A-17
STATION 45 Date 1 June 1984 Depth 61 m Salinity (bottom) 01 ppt Temperature (bottom) 139 C No of samples 10
Total Frequency occurrence
Density (no2)
Taxa nUllber (1) X SD
Nematoda 174 900 149396 132347 Turbellaria 5 200 4293 10898 ~~~QiQ~sect tmQtpoundQ~ ~QQsectQ flQi~sect Oligochaeta ~~iQQysecttygl~ iQl~rm~~i2 ~Q[Qi~~l~ ~~DilgDsectisect Ostracoda
5 20
190 103
12 5
400 900
1000 900
60 (I 400
4293 17172
163134 88436 10303 4293
6071 8095
92563 51524 11304 6071
bimnQpoundytng[ sp ~gQmYsectisect IDg[pound~Qisect ~Q[QQhi~m sectlmQDisect sectpoundQtiQlsectQ pound~Qgsectisect ChironQmid larvae
33 1
10 375
2
900 100 700
1000 200
28334 859
8586 321975
171 7
17196 2715 7010
179201 3620
Mean number of organismssample 935 Standard deviation 254
nurn b 0 f 2lean er organlsms m 802791 Standard deviation 218423
H= 239 SD= 075 SR= 1 22 J= 065
A-18
STATION 18 Date 1 June 1984 Depth 30 AI
Salinity (bottom) 00 ppt Temperature (bottom) 134 C No of samples 11
Frequency Density (no 1m2)
Taxa Total number
occurrence (X)
---------------- shyX SD
Turbellaria 14 636 10928 1157 7 ~~~Qltlg~ ilipoundQ~ Oligochaeta
10 178
727 1000
7805 138937
601 6 67913
~~iQQy~tY~l~ ill~[m~Qi~ 122 636 95227 93619 ~Q[Qipound~ l~i~lsectisect Ostracoda
7 1
455 9 1
5464 78 1
6946 2589
billQylhg[ Spa 16 818 12489 10420 GQ[QQQil HQi~ 139 1000 108496 70934 gQ[Qebi secteiifQ[~ sectQiiQi2 ~Q~sectisect Diptera pupae
1 2 1
9 1 182
11 1
781 1561 781
2589 3473 2589
Chironomid larvae 2 182 1561 3473
Mean number of organismssample 714 Standard deviation 284
nean num b er 0 f organlsms m 2 612728 Standard deviation 244249
H= 232 SD= 075 SR= 1 25 J= 063
A-19
STATION 58 Date 1 June 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 138 C No of samples 10
Frequency Density (noI 2 ) Total occurrence
Taxa number (X) X SD
Nematoda 173 1000 148538 47383 Turbellaria 3 300 2576 4147 Oligochaeta 53 1000 45506 32139 ~giQgY2k~g~ ini~[m~Qi~ bQg91YehY2 Yi[~nsect ~Qr~i~Yl m~nl~n~i
26 1
10
600 100 500
22324 859
8586
3391 2 2715
13424 bimnQpound~Q~[ sp ~Q9~m[Y poundgnitYpoundQlysect ~QtQehiYm ~lQni
4 1
46
200 100
1000
3434 859
39496
8295 2715
22243 Chironomid larvae 1 100 859 271 5
Mean number of organismssample 318 standard deviation 103
M b f I 2ean num er 0 organlsms III 273035 Standard deviation 88842
H = 1 99 SD= 065 SR= 1 08 J= 060
A-20
STATION 55 Date 1 June 1984 Depth 27 m Salinity (bottom) 00 ppt Temp era t u r e (b 0 t tom) 140 C No of samples 10
Frequency Density (nom 2 ) Total occurrence
Taxa nueber (X) X SD
Nematoda 157 1000 134800 69524 Turbellaria 9 400 7727 13696 tlHl~lk ~2~~iQH 1 100 859 2715 Oligochaeta 49 1000 42071 32745 ~~iQQysect~gl~ S[l9sect bHbQghQb~~ Yirl~
10 1
400 100
8586 859
12799 2715
tQ[Qpoundls l2lilUsect bilQHSbg[ sp ~QrQQbil nllQisectHarpacticoida
4 7
134 1
400 500
1000 100
3434 6010
115052 859
4434 7069
44742 271 5
sectpoundQUQlls poundsQgn~sect Chironomid larvae
1 1
100 100
859 859
271 5 2715
Hydracarina 1 100 859 2715
Hean number of organismssample 376 Standard deviation 132
M b f 2ean num er 0 organIsms m 322834 Standard deviation 113127
H= 202 SD= 068 SR= 1 40 J= 055
A-21
STATION 45 Date 18 June 1984 Depth 67 m Salinity (bottom) 01 ppt Temperature (bottom) 149 C No of samples 10
Frequency Density (nom2)
Taxa Total nUllber
occurrence ex) i SD
Nematoda 109 1000 93587 3891 7 Turbell ari a 3 200 2576 5795 ~g~tbg limoipoundQl Q~Qni2 fQ(i~2 Oligochaeta ~gigQ~~Y inl[ggi ~Q[QiSY2 moilo Ostracoda
3 2
194 44
7 3
200 200
1000 1000 200 200
2576 171 7
16656B 37778 6010 2576
5795 3620
118364 36020 12831 5795
bimoQampl~n~[2 sp ~Q[QQbiYm lmgoi Harpacticoida sectpoundQQ1202 pound2022Osect Chironomid larvae
68 1 1
113 2
900 100 100
1000 200
58385 859 859
97022 171 7
97627 2715 2715
73976 3620
Mean number of organismssa_pie 550 Standard deviation 371
Mean nUll ber 0 f organIsms 2II 472230 Standard deviation 318519
H= 242 SD= 077 SR= 1 32 Ja 065
A-22
STATION 18 Date 18 June 1984 Depth 34 m Salinity (bottom) 00 ppt Temperature (bottom) 155 C No of samples 10
Frequency Density (nom 2) Total occurrence ----------------shy
Taxa nUlber (Z) X SD
Neutoda 291 1000 249853 138826 Turbellaria 1 100 859 2715 ~~n~~nki~ sectQ~~iQ~2 ~g~ntbg2 limni~Q9 Oligochaeta
1 3
123
100 300
1000
859 2576
105608
271 5 4147
48240 ~~igQY~~~~9 int~(mgii ~Q[~i~~~ mini~ni bimnQ~ylbg(~ Spa
67 6 5
1000 500 400
57526 5152 4293
40485 6003 6071
~Q(QebiYm ~imQnisect Harpacticoida
80 2
1000 200
68688 171 7
41276 3620
sect~QttQini ~2nig~n~i Chironomid larvae
2 4
200 300
171 7 3434
3620 6003
Mean number of organismssample 585 Standard deviation 194
I 2Mean urn b er 0 f organIsms m 502281 Standard deviation 166943
H= 203 SD= 068 SR= 1 20 J= 057
A-23
STATI ON 58 Date 18 June 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (noI 2) Total occurrence
TaKa number (X) X SD
Nellertea 2 100 1717 5430 Nematoda 160 1000 137376 6361 1 Turbellaria 4 400 3434 4434 Oligochaeta 36 1000 3091 0 14705 ~iQQYik~ Q1rQ 4 300 3434 6003 bitnQgl~ebysect YrDsect ~Q[QiY~ ~~nni biQQpoundY1h[ sp ~Q[Qeng ~ilQD Chironomid larvae
3 1 3
61 1
300 100 300
1000 100
2576 859
2576 52375
859
4147 2715 4147
1428 1 2715
Chironollid pupae 1 100 859 271 5
Mean number of organismssample 276 standard deviation 72
nean nurn b er 0 f organIsms I 2 236974 Standard deviation 61410
H = 1 78 SD= 060 SR= 1 23 J= 051
A-24
STATION 55 Date 18 June 1984 Depth 18 m Salinity (bottom)1 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (no 1m2) occurrence
Taxa (X) X SD
Nematoda 160 1000 137376 43967 Turbellaria 1 100 859 271 5 Oligochaeta 61 1000 52375 31985 ~~iQQY~kY~~ int~[mQi~ ~Q[Qipound~l~ m~nini~ biIDnQ~Ylb[s sp
3 3 3
300 300 300
2576 2576 2576
4147 4147 4147
~Q[Q~bi~ ~slIDQni~ Chironomid larvae
85 6
1000 600
72981 5152
34165 4434
Mean number of organismssample 322 Standard deviation 75
2Mean number 0 f organIsms m 276469 Standard deviation 64099
H= 178 5D= 065 SR= 0B4 J= 059
A-25
Frequency Density (no2) occurrence -----------------
Taxa (7) X SD
Nematoda 104 1000 89294 47409 Turbell ar i a 1 100 859 2715 ~~~nQ~sect imni~Q~ tjQQsectQlis flQig~ Oligochaeta
2 1
297
100 100
1000
171 7 859
255004
5430 271 5
146273 ~~i~QYsect~Y~lls ilr2is gQrQi~y~ IDDilDia
24 4
600 300
20606 3434
27212 6003
Ostracoda 2 200 171 7 3620 biDQSy~b~C~ sp M~QYsectisect m~r~~Qi ~QrQeniy QD Harpacticoida
157 1 1 1
900 100 100 100
134800 859 859 859
73197 2715 2715 2715
sectpoundQttQDs SsDQD 113 900 97022 61656
STATION 45 Date 2 July 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) No of samples 10
172 C
Mean number of organismssample 708 Standard deviation 339
M ean num b er f 20 organisms 607889 Standard deviation 290B22
H= 216 SD= 073 SR= 1 27 J= 058
1-26
STATION 18 Date 2 July 1984 Depth 24 WI
Sal inity (bottom) 00 ppt Temperature (bottom) 172 C No of samples 10
--------------------------------~-----------------------------------------Frequency Density (nom2)
Total occurrence Taxa number (7) X SD
Nematoda 202 1000 173437 113532 ~~~nih~sect mnpoundQ~ Oligochleta
4 102
400 1000
3434 87577
4434 54873
~~igQYsect~Y~12 inl~rmgi2 ~Q[~poundYl~ m~ni~nsectisect bimnQpoundylh~[~ Spa
115 4
15
900 300 900
98739 3434
12879
100720 6003 9274
~Q[QQniY~ sect~QDi~ 55 900 47223 40525 Harpacticoida 1 100 859 2715 sectpoundQiiQlD SDg~DEisect Chironomid larvae
2 6
200 400
1717 5152
3620 7240
Hymenoptera 1 100 859 2715 Hydracarina 1 100 859 2715
Mean number of organismssample 508 Standard deviation 253
2Mean num ber 0 f organIsms m 436169 Standard deviation 217580
H= 225 SD= 074 SR= 1 22 J= 063
A-27
STATION 58 Date 2 July 1984 Depth 58 1
Salinity (bottom) 00 ppt Temperature (bottom) IBO C No of samples 10
Frequency Density (no2) Total occurrence
Taxa number ltX) i SD
Nematoda 151 1000 129649 42729 Turbellaria 1 100 859 2715 01 i gochaeta 41 1000 35203 22698 ~~i~e~~~ int~~m~~ 3 200 2576 5795 btbQglYRhY~ Yir~n~ ~e~~ampy mni~niii bimQeamp~tb~ sp ~e~eQhiY ~mQni Chironomid larvae
1 4 2
68 1
100 300 200
1000 100
859 3434 171 7
58385 859
271 5 6003 3620
1557 1 2715
Mean number of organisassample 272 Standard deviation
I 2Mean num ber 0 f organIsms I 233539 Standard deviation 62546
H = 1 69 SD= 061 SR= 099 J= 053
A-28
73
STATION 55 Date 2 July 1984 Depth 15 III
Salinity (bottom) 00 ppt Temperature (bottom) 182 C No of samples 10
Frequency Density (nom2) occurrence
Taxa (X) X SD
Nematoda 184 1()00 157982 5264B Turbellaria 1 100 859 271 5 Oligochaeta ~~iQQ~sect~Y~ll~ n~[~~Qi~ bitnggYQDYsect Yi[~nsect ~QrQipoundM2 m2ni~nsectisect bimnQpoundYn~[2 sp ~QrQQhiM Qni Harpacticoida
91 2 1 B 2
96 2
1000 200 100 500 200
1000 200
78133 171 7 859
6869 171 7
82426 1111
26058 3620 271 5 1890 3620shy
25980 3620
ChirDnomid larvae 5 400 4293 6071 Chironolllid pupae 1 100 859 2715
Mean number of organismssample 393 Standard deviation 53
2t1ean nUllber Df organlsms III 337430 Standard deviatiDn 45080
H= 187 SD= 067 SR= 116 J= 054
A-29
STATION 45 Date 17 Jul y 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (X) X SD
Nematoda 215 1000 184599 45837 ~~n~b~~ imDipoundQ Qe~Qni fllHi2
3 1
300 100
2576 859
4147 2715
Oligochaeta 305 1000 261873 147955 ~~iQQY~k~ in~rm~2i ~Qr~ipoundYl IDniln~i~ Ostracoda
17 1 2
500 100 200
14590 859
171 7
22554 2715 3620
bmnQpound~ihr sp ~QCQQhiY ~lQD~
176 1
1000 100
151114 859
57125 2715
Harpacticoida 4 300 3434 6003 sectQ~~Qn poundnQnai~ Chironomid larvae
91 5
1000 400
78133 4293
61310 6071
Mean number of organismssample 821 Standard deviation 275
M b f 2ean num er 0 organlsms m 70491 1 Standard deviation 236369
H= 215 SD= 073 SR= 114 J= 060
A-30
STATION 18 Date 17 Jul y 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom 203 C No of samples 10
Frequency Density (001 2 Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 339 1000 291065 119140 Turbellaria 3 200 2576 5795 ~~2~b~~ limnipoundQ12Oligochaeta
4 18S
300 1000
3434 161417
6003 89393
~~iQQy~~~ls in~(ID~Qi bim~Qampy~bg(2 Spa
34 16
800 700
29192 1373B
22967 15252
~g(gebi~m ~21mQni2 Harpacticoida
52 3
1000 200
44647 2576
25212 5795
2ampQ11Q1202 ampS02Qg~2i2 Chironomid larvae
18 10
700 700
15455 8586
13904 701 0
Mean number of organi$mssample 667 Standard deviation IBB
H ean nurn b er 1 20 f organIsms m 572686 Standard deviation 161750
H = 1 99 SD= 065 SR= 090 J= 060
A-31
STATION 58 Date 17 July 1984 Depth 55 AI
Salinity (bottom) 00 ppt Temperature (bottom) 197 C No of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nellatoda 173 1000 14853B 66390 Turbellaria 1 100 859 271 5 ~~~n~hu ini~QA Oligochaeta
1 46
100 1000
859 39496
2715 26293
~gipoundQy~~ygl2 in~rJg~i~ b1nQglYRnY~ Yi( Bivalvia
6 2 1
400 200 100
5152 1717 859
8295 3620 271 5
ei~ IDnH~n~i~ 2 200 171 7 3620 Ostracoda 1 100 959 271 5 biIDQHlh~( Spa ~Q(QRbim ~21Qnisect Diptera pupae
1 94
1
100 1000 100
859 80708
859
2715 35332 2715
Heleidae 1arvae 5 500 4293 4525 Chironomid larvae 1 100 859 2715
Mean number of organismssample 335 Standard deviatiDn 113
Mean number of organismsRI2 287631 Standard deviation 97413
H= 1 86 SO= 064 SR= 155 J= 049
A-32
STATION 55 Date 17 July 1984 Depth 18 m Sali nity (bottom) 00 ppt TeAlperature (bottom) 199 C No of samples 10
Frequency Density (nom2 ) occurrence
Taxa (X) x S D
Nematoda 61 1000 52375 33972 Turbellaria 1 100 859 2715 Oligochaeta 24 900 20606 11590 ~~i2QY~k~~1 iOi[2 bimDQ~xlb~r sp ~Q[QQhi~ sectgni~ Chironomid larvae
3 1
38 3
200 100
1000 300
2576 859
32627 2576
5795 2715
19326 4147
Mean number of organismssample 131 standard deviation 54
M b f 2ean num er 0 organIsms 112477 Standard deviation 46757
H= 184 SD= 066 SR= 085 J= 065
bull
A-33
STATION 45 Date 1 August 1984 Depth 58 m Sal i nity (bottoll) 03 ppt Temperature (bottom) 203 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa nUllber (X) X SD
Nematoda 145 1000 124417 52344 Turbellaria 1 100 859 2715 Mmth~sect iHpoundQ~ Q~~Qi ilQ[i9Oligochaeta
5 3
196
500 300
1000
4293 2576
168286
4525 4147
91064 ~igQYsect~~li int9i Ostracoda
2 3
100 300
171 7 2576
5430 4147
bimnQpoundtl sp ~Q[Q2hiY sectlQni~
240 6
1000 600
206064 5152
73526 4434
sectpoundQtQl poundngnai~Helei dae larvae
1862 1
1000 100
1598713 859
966134 271 ~
Mean number of organismssample 2464 Standard deviation 1156
211 ean num ber 0 f organIsms II 2115590 Standard deviation 992518
H= 124 SD= 041 SR= 089 J= 036
A-34
STATION 1S Date 1 August 1984 Depth 24 II
Salinity (bottom) 00 ppt Temperature (bottom) 198 C No of samp I es 10
Frequency Density (nom2) occurrence ---------------- shy
Taxa (X) X S D
Nuertea 1 100 859 2715 Nellatolllorpha 1 100 859 2715 Nematoda 248 1000 212933 108288 Turbellaria 4 400 3434 4434 ~untb~la Hli~g Oligochaeta
4 206
400 1000
3434 176872
4434 75309
~~igQYli~dli i[t~(gi~ ~QtQpound l binQ~ybt2 sp ~2l~bi Q[i ~2tlgtQ(ila tirisect sectpoundQtel poundl9lla Chironomid larvae
10 1
20 205
1 574
9
500 100 800
1000 100
1000 400
8586 859
17172 176013
859 492836
7727
10709 271 5
14021 48104
271 5 150531
13696
Mean number of organismssample 1284 Standard deviation 290
M b f I 2ean nurn er 0 organIsms III 1102442 Standard deviation 2488B5
H= 211 SD= 071 SR= 1 16 J= 057
A-35
STATION 58 Date 1 August 1984 Depth 55 m Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samp 1es 10
Frequency Densi ty _ ltnom2 ) Total occurrence
Taxa number (7) X SD
Nemertea 1 100 859 2715 Nematoda 22 900 18889 15036 Turbellaria 1 100 859 2715 Oligochaeta 19 700 16313 17385 biiQQgl~QhY~ YiCg~~ 2 200 171 7 3620 ~Q[~i~~l~ m2nil~n2i2 ~Q[QehiYm ~lmQni2
4 164
300 1000
3434 140810
6003 103048
Heleidae larvae 8 500 6869 8868
Mean number of organismssample 221 Standard deviation 111
I 2Mean num ber 0 f organIsms m 189751 Standard deviation 95391
H = L 37 SD= 043 SR= 090 J= 046
A-36
STATION 55 Date 1 August 1984 Depth 15 m Salinity (bottoll) 01 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (i ) X SD
Nemertea 1 100 859 2715 Neutoda 122 1000 104749 7394B Turbellaria 4 300 3434 6003 ~~~~~nt~ secte~poundQa~ Oligochaeta
1 118
100 1000
859 101315
2715 61223
~giQgY~k~~l iot~[m~Qi btbQg~2b~ Y[O ~grQipound~ ~nl~ni b~ngpound~tb~[ Spa
3 1 5 1
200 100 500 100
2576 859
4293 859
5795 2715 4525 2715
~Q[QebiYm ~mQoi sect~QttQ~ ~OQOi Heleidae larvae
42 2 2
800 200 100
36061 171 7 171 7
21341 3620 5430
Chironomid larvae 4 400 3434 4434
Mean number of organismssapIe 306 Standard deviation 169
M b f I 2ean nurn er 0 organIsms m 262732 Standard deviation 145101
H = 198 SD= 067 SR= 1 45 J= 054
A-37
~-- --------------~~-------------
STATION 45 Date 17 August 1984 Depth 61 1
Salinity (bottom) 10 ppt Temperature (bottom) 210 C No of samp 1es 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nematoda 240 1000 206064 130213 ~~h~sect limQ tjQ~~Hi~ fQ[i~~ Oligochaeta
31 2
245
400 100
1000
26617 1717
210357
75228 5430
121374 babgglYQbl~ Yi[~sect 1 100 859 2715 Ostracoda 1 100 859 271 5 biQ~xtb~[ Spa ~~Q~~isect ~[pound~Qisect ~Qgebi HQOi
333 2
143
1000 200
1000
28591 4 171 7
1227BO
106553 3620
106860 sectpoundQUg~ poundg~nsectisect 1738 1000 1492247 68441 7
Mean number of organismssample 2736 Standard deviation 944
M b f I 2ean num er 0 organlslls m 2349130 Standard deviation 810600
H= 172 SD= 056 SR= 079 J= 052
A-38
STATION 18 Date 17 August 1984 Depth 27 III
Sal i ni ty (botto) 01 ppt Temperature (bottom) 214 C No of samples 10
Frequency Density (nom 2 ) occurrence
Taxa (X) X SD
Nematoda 186 1000 159700 62468 ~tgt SPa 2 100 171 7 5430 Turbellaria 8 400 6869 8868 ~~ntbg2 imnipoundQ 12 700 10303 11304 Oligochaeta 283 1000 242984 90509 ~~iQQY~~Y~lls inlgtmggisBivalvia
4 1
400 100
3434 859
4434 271 5
~Qt~i~Y nilnsectisectbimnQpoundttbg[s SPa ~QtQQbi~ islmQDi2
1 17
286
100 900
1000
859 14596
245560
271 5 10747 83461
sectpoundetteln poundDsggnsectisect Chironomid larvae
526 4
1000 3Q0
451624 3434
179610 6003
Mean number of organismssapIe 1330 Standard deviation 162
Mean nurn ber I 20 f organIsms m 1141938 Standard deviation 139389
H= 214 SD= 073 SR= 1 06 J= 060
A-39
STATION 58 Date 17 August 1984 Depth 55 II
Salinity (bottom) 01 ppt Temperature (bottom) 220 C ND of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (7) x S D
Nematoda 68 1000 58385 27689 Turbellar i a 4 200 3434 8295 Oligochaeta 19 800 16313 13084 ~~i~Q~k~~l~ in~~[m~i bitUQ9Y2bYa Yi[~na Bivalvia
3 3 4
300 300 300
2576 2576 3434
4147 4147 6003
gQ[QipoundYl~ mnilDa 1 100 859 2715 binQpoundY~[ sp gQ[Q2UY a~mgnia sect~Qtgl~n ~n~~ni
2 338
6
100 1000 400
171 7 290207
5152
5430 56636 7240
Mean number of organismssample 448 Standard deviation 72
W b f 2lean num er 0 organlsms II 384653 Standard deviation 61988
H = 1 27 SD= 041 SR= 1 02 J= 038
A-40
STATION 55 Date 17 August 1984 Depth 18 m Salinity (bottom) 00 ppt Temperature (bottol) 223 C No of samples 10
Frequency Density (nom 2 ) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 291 1000 249853 118104 Turbellaria 1 100 859 2715 M~ntb~ mni~Q Oligochaeta
1 47
100 1000
859 40354
2715 28347
~~iQQ~sectkY~ll int~[m~gi bitbQQ1YSDY Yi(gn Bivalvia
25 12
6
900 500 400
21465 10303 5152
1231 0 18459 7240
~Q~2ipoundY mnil~ni Ostracoda
11 8
400 600
9445 6869
12442 6773
bmnQpoundYb~r~ SPa 52 1000 44647 19746 ~QrQsbY lmgnisectsQiielo snQ~ni~ Chironomid larvae
43 5
15
1000 400 BOO
36920 4293
12879
21436 6071 8344
Mean number of organismssample 517 Standard deviation 174
M b f I 2ean num er 0 organlsms m 443896 Standard deviation 149431
W = 228 SD= 065 SR= 1 33 J= 062
A-41
STATION 45 Date 29 August 1984 Depth 55 III
Salinity (bottom) 07 ppt Temperature (bottom) 199 C No of samples 10
Frequency Density (noI 2) Total occurrence
Taxa number (X) X SD
Nematoda 192 1000 164851 98380 ~sntbsect limnipoundQlDligochaeta
2 198
200 1000
171 7 170003
3620 67339
~Q[eipoundYls msniln~isect Ostracoda
1 4
100 400
859 3434
2715 4434
bimnQpoundytb[s Spa gQ[Qeniy sect21QOi~ sectpoundQttQlsO poundsOsggOi
164 87
2468
1000 1000 1000
140810 74698
2119025
39283 39460
840890
Mean number of organismssample 311 6 Standard deviation 101 1
ill b f 2nean nUll er 0 organIsms 2675398 Standard deviation 8682B8
W= 116 SD= 036 SR= 060 J= 039
A-42
STATION 18 Date 29 August 1984 Depth 30 bull Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samples 10
Total Frequency occurrence
Densi ty 2
(nom )
Taxa number (~ ) x S D
Nematoda 150 1000 128790 28905 Turbellaria 7 400 6010 9096 ~nh imni~Qj Oligochaeta ~~i~2Y~k~~1 ini~CIDgii bih2g~Qb~ Yi(~U2 Bivalvi a
B 145
1 1 2
600 1000
100 100 200
6869 124497
859 859
171 7
677 3 84732
271S 2715 3620
~Q[Qi~yli miDllgni bimn2pound~ih~C sp ~QtQehiY imQUia Harpacticoida
7 7
265 1
500 300
1000 100
6010 601 0
227529 859
8145 10747
139462 2715
sect~QtiQDi ~Q~Q~i~ Chironomid larvae
2471 2
1000 200
2121601 171 7
1063112 3620
Mean number of organismssample 3067 Standard deviation 121 9
2Mean number 0 f organIsms m 2633326 standard deviation 1046718
H = 1 09 SD= 034 SR= 1 04 J= 029
A-43
STATION 58 Date 29 August 1984 Depth 55 111
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (noI 2 ) Total occurrence -----------------
Taxa nUllber (X) X SD
Nemertea 4 400 3434 4434 Nuatoda 64 1000 54950 25016 Turbellaria 9 400 7727 11047 ~Hl~b limli~Q19 Oligochaeta
1 37
100 1000
859 31769
2715 19006
i~Qyh il(~~ bHtlQSlheln Yl Bivalvia
4 4
20
200 300 400
3434 3434
17172
8215 6003
26541 ~e(ijY l bQ~dlH sp
26 1
700 100
22324 859
25662 2715
~Q[QQhil iQ sectjgUell HD Heleidae larvae
418 20
1
1000 800 100
358895 17172
859
129443 12799 271 5
Mean number of organismssample 609 Standard deviation 175
nean num b er 0 f organIsms 1 111 2 522887 Standard deviation 150164
H= 176 SD= 051 SR= 1 30 J= 047
A-44
I I
I
I
STATION SS
Date 29 August 1984 Depth 21 1
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (no2) Total occurrence
Taxa nUllber (X) x S D
Nematoda ISO 1000 128790 37969 Turbellaria 1 100 859 271 5 Oligochaeta 48 1000 41213 16088 ~i~g~sect~~l iQ~~mgi bi~QQg~gb~sect ~i~nsect
10 14
600 600
eSB6 12020
9050 14137
Bivalvia 4 200 3434 7240 ~Q[Q~Yl niQaa Ostracoda
15 7
700 SOO
12879 6010
15806 7069
bmQg~~~b~ SPa 14 800 12020 8295 ~g[gaby mgni sect~g~~Qn ~ngnai Chironomid larvae
IB4 25 9
1000 900 700
157982 21465
7727
35563 16810 6335shy
Mean number of organismssample 481 Standard deviation B6
2Mean number 0 f organlsms m 412987 Standard deviation 74131
H= 24S SD= 074 SR= 1 23 J= 068
A-45
STATION 45 Date 14 September 1984 Depth 61 11
Salinity (bottom) 03 ppt Temperature (bottom) IB4 C No of samples 10
---------------------------------~----------------------------------------
Taxa TotalnUlllDer
Frequency occ~~~ence
Density (no 2) -----X-------sect7B
Nematoda 189 1000 162275 85233 t1tQ SPa
Turbellaria 2 2
200 100
171 7 171 7
3620 5430
~~~nIng limoifQl t1QQQDi~ flQriQ Oligochaeta
5 19
142
400 800
1000
4293 1631 3
121921
6071 12442 30504
~QQifYl mDl~D bimoQpoundt1hgr Spa Cumacea
19 184
2
800 1000 200
1631 3 157982
171 7
130B4 69541 3620
~Q[QnniYm ~~lmQDi Harpacticoida
118 1
1000 100
10131 5 B59
43367 2715
sectfQIIQD fOQgO Chironomid larvae
1780 1
1000 100
1528308 859
673586 2715
Mean number of organismssample 2464 Standard deviation 874
M ean num b er f 20 organlsms 2115590 Standard deviation 750305
H= 151 SD= 046 SR= 1 07 J= 041
A-46
STATION 18 Date 14 September 1984 Depth 21 III
Salinity (bottom) 01 ppt Temperature (botto) 182 C No of samples 10
Frequency DenSity (nom 2 ) Total occurrence ---------------- shy
Taxa nUlDber (i) X SD
Nemertea 1 100 859 271 5 Nematoda 186 1000 159700 44925 Turbellaria 16 400 13738 20717 ~~Dth~~ limni~Ql Oligochaeta
13 55
700 900
11162 47223
9096 30085
~Q~ei~Yl nil~Qi~ 17 900 14596 7069 bimDg~lbg[ Spa b 500 5152 6003 ~Q[Q2niY ~lgQi~ Harpacti coi da
562 2
1000 200
482533 171 7
136766 3620
sectpoundQttQ~Q~ ~n~ni 791 1000 679153 324290
Mean number of organismssample 1649 Standard deviation 447
I 211ean nUll ber 0 f organIsms I 1415831 Standard deviation 384136
H= 179 SD= 064 SR= 084 J= 054
A-47
STATION 58 Date 14 September 1984 Depth 58 III
Salinity (bottom) 01 ppt Temperature (bottom) 191 C No of sampl es 10
-------------------------------------------~------------------------------Frequency Density (nom 2 )
Total occurrence Taxa number eX) X SD
Nemertea 1 100 859 2715 Nematoda 55 1000 47223 18658 Turbellaria 10 500 8586 11448
1 100 859 2715 Oligochaeta 41 1000 35203 17850 ~~iQQ~~gll iu1g[m~i ~Q[Q~Yl nilD bimnQ~Y~h[ Spa ~Q[Q~hiYm lmgui sectpoundQilg1D poundU2D Chironomid larvae
4 10
2 277
23 4
100 500 200
1000 700 300
3434 8586 171 7
237832 19748 3434
10861 11448 3620
50561 21051 6003
Mean number of organismssample 428 Standard deviation 51
M b f 2ean num er 0 organIsms III 367481 Standard deviation 43743
H= 179 SD= 055 SR= 114 J= 052
A-48
I I
STATION SS Date 14 September 1984 Depth 21 II
Salinity (bottom) 01 ppt Temperature (bottom) 190 C No of samples 10
--------------------------------------------------------------------~-----
Frequency Density (no1I2) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 102 1000 87577 39200 Oligochaeta 34 700 29192 31142 ~iQ2Y~y1 int(mgi~ bithQgl~en~ Yi(gDsect ~Q(~i~Y m~DilgDsecti~ bimDQamp~1h(sect sp ~2(QQhiY slmQD 2poundQiiQlsD ~sD~g~nsecti Chironomid larvae
36 18 16 17
100 16
3
1000 600 800 700
1000 800 300
30910 15455 13738 14596 85860 13738 2576
157BO 20953 10078 14621 32126 10861 4147
Mean number of organismssample 342 Standard deviation 97
2Mean nUllber 0 f organlsms m 293641 Standard deviation 83617
H= 262 SD= 079 SR= 095 J= 083
A-49
Appendix B--Sediment particle size and organic content of the Cathlamet Bay
benthic invertebrate sites 13 March through 14 September
1984
iii
1
Station 18a 48 54 57
Survey 1 1 1 1
Month March March March March
Day 13 13 13 13
Particle size (mm) Phib Percent by weight
gt 40 -2 000 000 000
20- 40 -1 000 000 000
10- 20 0 000 009 000
05- 10 1 018 1079 032
025- 050 2 545 7583 2468
0125- 025 3 8731 1225 6783
00625-0125 4 491 037 657
lt0625 (5-12) 216 067 060
Organic Content 160 116 128
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
b Phi= -log2(sediment particle diameter in mm)
B-1
Station 18a 48 54 57
Survey 2 2 2 2
Month April April April April
Day 5 5 5 5
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 003 093 000
05shy 10 1 005 31 75 023
025shy 050 2 087 5904 2368
0125- 025 3 6316 750 7155
00625-0125 4 3056 026 427
lt0625 (5-12) 533 052 028
Organic Content 081 077 065
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-2
Station 45 55 58
Survey 3 3 3 3
Month April April April April
Day 18 18 18 18
Particle size (mm)
gt 40
Phi
-2
Percent by weight
000 000 000
20shy 40 -1 000 000 000
10shy 20 0 005 009 004
05shy 10 1 010 027 013
025shy 050 2 015 095 225
0125- 025 3 097 536 6111
00625-0125 4 453 2821 2205
lt0625 (5-12) 9420 6511 1442
Organic Content 31 42 14
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-3
Station 18a 45 55 58
Survey 4 4 4 4
Month May May May May
Day 4 4 4 4
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 021
05shy 10 1 000 065 063
025shy 050 2 012 370 230
0125- 025 3 091 4099 4696
00625-0125 4 322 3650 3052
lt0625 (5-12) 9575 1810 1939
Organic Content 330 180 160
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-4
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
5
May
17
000
000
005
016
217
5862
2729
1170
100
45 55 58
5 5 5
May May May
17 17 17
Percent by weight
000 000
000 000
005 008
113 031
325 274
1903 5613
2784 2401
4870 1672
240 110
000
000
000
010
020
079
397
9494
390
B-5
Station 18al 45 55 58
Survey 6 6 6 6
Month June June June June
Day 6 6 6 6
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 020
05shy 10 1 005 051 027
025shy 050 2 005 301 1 79
0125- 025 3 074 3189 5404
00625-0125 4 599 4118 2885
lt0625 (5-12) 9317 2332 1485
Organic Content 340 240 150
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-6
Station
Survey
Month
Day
Particle size Cmm) Phi
gt 40 -2
20shy 40 -1
10shy 20 a
05shy 10 1
025shy 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
7
June
18
000
000
005
029
138
3917
4143
1768
180
45
7
June
18
55 58
7 7
June June
18 18
Percent by weight
000
000
000
010
020
080
427
9464
310
000 000
000 000
000 007
011 022
057 190
957 5286
3023 2642
5957 1853
1 70 110
B-7
Station 18al 45 55 58
Survey 8 8 8 8
Month July July July July
Day 2 2 2 2
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 006 002 006
05shy 10 1 006 0l3 023
025shy 050 2 017 088 171
0125- 025 3 074 2712 5365
00625-0125 4 552 3892 3081
lt0625 (5-12) 9345 3294 l354
Organic Content 410 210 160
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-8
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
9
July
17
000
000
003
013
130
4294
4434
1127
130
45
9
July
17
Percent
000
000
000
006
012
051
046
9885
290
55
9
July
17
by weight
000
000
019
048
091
628
3616
5597
030
58
9
July
17
000
000
004
022
158
5017
3148
1650
140
B-9
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18al
10
August
1
45
10
August
1
55
10
August
1
58
10
August
1
Percent by weight
000 000
000 004
001 004
009 018
018 088
098 306
049 2510
9824 7070
000
005
045
763
3604
4495
932
156
100 190 060
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-10
Station 18 45 55 58
Survey 11 11 11 11
Month August August August August
Day 17 17 17 17
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000 000
20- 40 -1 005 000 000 000
10- 20 0 021 003 000 210
05- 10 1 064 009 000 159
025- 050 2 226 027 045 2656
0125- 025 3 3259 131 712 3719
00625-0125 4 4327 195 1737 1159
lt0625 (5-12) 2098 9635 7506 2097
Organic Content 210 300 160 100
Ii I
B-11
Station
Survey
Month
Day
Particle size (mm) Phi
gt40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
12
August
29
000
000
012
046
186
3465
4498
17 93
241
45
12
August
29
55 58
12 12
August August
29 29
Percent by weight
000
000
002
009
026
118
189
9656
540
000 000
000 000
003 011
011 028
055 1013
859 5033
1596 1827
7476 2089
1 70 120
B-12
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
_-------------------- shy
B-13
LITERATURE CITED
Chapman P M and R O Brinkhurst
1980 Salinity tolerance of some selected aquatic oligochaetes Internat
Rev der Gesamten Hydrobio1gie 65499-505
Chapman P M and R O Brinkhurst
1981 Seasonal changes in interstitial salinities and seasonal movements
of subtidal benthic invertebrates in the Fraser River estuary BC Est
Coast Shelf Sci 1249-66
Gray J S and H Christie
1983 Predicting long-term changes in marine benthic communities Mar
Ecol Prog Sere 1387-94
Kinne O
1966 Physiological aspects of animal life in estuaries with special
reference to salinity Neth J of Sea Res 3 227-244
Margalef R
1958 Information theory in ecology Gen Syst 336-71
McCabe G T Jr W D Muir R L Emmett and J T Durkin
1983 Interrelationships between juvenile sa1monids and nonsalmonid fish
in thl Columbia River estuary Fish Bu11U S 81(4)815-826
Pie10u E L
1966 The measurement of diversity in different types of biological
collections J Theor BioI 13131-144
Sanders H L P C Mange1sdorf and G R Hampson
1965 Salinity and faunal distribution in the Pocasset River
Massachusetts Limno Ocean 10216-229
Shannon L E and W Weaver
1963 The mathematical theory of communication Univ of Illinois Press
Urbana Ill
10
Simpson E H
1949 Measurement of diversity Nature 163688
11
APPENDIX A--Descriptive summary of benthic invertebrate data collected in
Cathlamet Bay Oregon during March through September 1984
STATION 18 Date 13 March 1984 Depth 46 m Salinity (bottom) 11 ppt Temperature (bottom) 67 C No of samples 15
Frequency Density (nom 2 ) Total occurrence
Taxa number (7) X SD
Nemertea 2 67 1145 4434 Nematoda 134 1000 76702 33169 Turbellaria 22 667 12593 15854 ~~n~b~~ imnpoundQ 31 Oligochaeta 486
933 17744 1468 1 100() 278186 138779
~QtQif~12 mnil~nsectisect 24 Ostracoda 39
933 13738 8462 800 22324 17715
~Q[QQbiYm ~lmQni~ 74 867 42358 38B70 EQntQIH~i2 Qyi 1 EQri gnQQn 1 Harpacticoida 7
67 572 2217 67 572 221 7
333 4007 7159 Insecta 2 67 1145 4434 Chironomid larvae 20 667 1144 B 10090 Collembola 95 867 54378 82588 Hydracarina 1 67 572 221 7
Mean number of organismssample 626 Standard deviation 19 1
M ean num b er 0 f 2organIsms III 537484 Standard deviation 163579
H= 237 so= 069 SR= 1 42 J= 061
A-l
STATION 48 Date 13 March 1984 Depth 107 m Salinity (bottom) 05 ppt Temperature (bottom) bB C No of sampl es 15
Frequency Densi ty (nom 2 ) Total occurrence
Taxa number (7) X SD
Nemertea 31 6b7 17744 1849 1 Nematoda 38 667 21751 22685 Oligochaeta 4 133 2290 6859 ~QQpound12 2nil~nsectisect 31 Ostracoda 1
667 17744 29648 67 572 221 7
~Q9~~[~ spp 1 ~Q[Q2l ~~lQnisect 1 ~Q2sectiQisect sectisect 4 Harpacticoida 1
67 572 2217 67 572 221 7
200 2290 5097 67 572 221 7
Insecta 2 133 1145 3021 Diptera adult 1 67 572 2217 Collembola 24 467 13738 30923
Mean number of organismssample 93 Standard deviation 59
Mean number of organismsm2 795b4 Standard deviation 50740
H= 255 SD= 079 SR= 1 55 J= 071
A-2
STATION 54 Date 14 March 1984 Depth 177 m Salinity (bottom) 00 ppt Temperature (bottom) 66 C No of samples 15
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nemertea 47 1000 26903 14096 Nematoda 7 267 4007 9102 Turbellaria 9 333 5152 1114B Oligochaeta 11 333 6296 10989 Gastropoda 1 67 572 2217 ~Q(Qi~Yl mnil~n2i~ Ostracoda
199 3
1000 200
11390B 171 7
97165 3555
gQ[Qehiy sectlmQnisect Harpacticoida
3 1
200 67
171 7 572
3555 221 7
Heleidae larvae 29 867 16600 10989 Chironomid larvae 2 133 1145 3021 Collembola 2 67 1145 4434
Mean number of organismssample 209 Standard deviation 103
2Mean number 0 f organIsms m 179734 Standard deviation 88247
H = 1 86 SD= 056 SR= 1 33 J= 052
A-3
STATION 57 Date 13 March 1984 Depth 91 m Salinity (bottom) 00 ppt Temperature (bottom) 63 C No of sampl es 15
Frequency Densi ty (no 81 2) Total occurrence
Taxa number (X) X SD
Nemertea 27 667 15455 13459 Nematoda 8 400 4579 6381 Turbellaria 4 200 2290 5097 Oligochaeta 8 400 4579 6381 ~g[gipound~l mnilui Ostracoda
1 1
67 67
572 572
2217 2217
~Qgml[a spp 1 67 572 2217 ~Q[Qeni~m lmQnisect Harpacticoida
2 1
133 67
1145 572
3021 221 7
Insecta 3 67 171 7 b651 Chironomid larvae 1 b7 572 221 7 Collembola 37 400 21179 65700 Hydracarina 1 67 572 221 7
Mean number of organismssample 63 Standard deviation 82
Mean number of organismsm2 54378 Standard deviation 70029
H= 253 SD= 075 SR= 1 83 J= 068
A-4
STATION 18 Date 5 April 1984 Depth 30 II
Salinity (bottoll) 00 ppt Temperature (bottom) 90 C No of samples 15
Frequency Densi ty (no1I 2) Total occurrence
Taxa number (i ) If S D
Nemertea 11 bOO 6296 6042 Nematomorpha 2 133 1145 3021 Nuatoda 119 1000 6811 6 50947 Turbellaria 20 600 11448 13640 ~~~nin~sect liIDni~Q12 Oligochaeta
33 481
1000 1000
18889 275324
10364 142326
~Q~Qi~Yl m2nil~ni2 23 600 13165 1371 7 Ostracoda 33 933 18889 10861 gQ(QQrriYID sect2mQnisectHarpacti coi da
38 7
933 133
21751 4007
13329 13328
Chironomid larvae 16 667 9158 8868 ColI embola 1 67 572 2217
Mean number of organismssample 523 Standard deviation 227
M b f 2ean num er 0 organIsms m 448762 Standard deviation 194508
H= 202 SD= 059 SR= 114 J= 0S6
A-5
STATION 45 Date 18 April 1984 Depth 64 III
Salinity (bottom) 00 ppt Temperature (bottom) 95 C No of samples 15
Total Frequency occurrence
Density (noI 2 )
Taxa number (X) X SD
Nematoda 171 1000 97890 92277 tyg~ sp Turbellaria
1 29
67 600
572 16600
221 7 23506
H~nng~ imDi~g tQQsectQl fg~ig Oligochaeta ~Q[Qi~Y2 m2niD~i Ostracodamiddot
9 41
367 42
100
400 1000 1000 800
1000
5152 23469
210071 24041 57240
781 5 13563
100542 19254 43134
~Q[Qeniym amQnisectHarpacticoida Heleidae larvae
37 2049
1
933 1000
67
21179 117284B
572
189B5 616612
221 7 Chironomid larvae 3 200 171 7 3555 Collembola 1 67 572 221 7 Insect parts 1 67 572 221 7
Mean number of organismssample 1901 Standard deviation 864
b f 2nean num er 0 organIsms m 1632485 Standard deviation 741931
H = 1 52 SD= 046 SR= 1 13 J= 040
A-6
STATION 18 Date 18 April 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom) No of samples 15
Frequency Density (nom2) Total occurrence
Taxa nueber (X) x s D
Nemertea 13 533 7441 9663 Nematomorpha 3 200 171 7 3555 Nematoda 195 1000 111618 63675 Turbell ari a 9 467 5152 6326 ~~ni~~ i~ni~Ql~ 30 867 17172 129B1 Oligochaeta 580 1000 331992 108880 ~QC~i~Ml~ m~nil~n~isectOstracoda
28 18
1000 667
16027 10303
11179 10364
~Q[Q~~iYm sect~Qni2 sect~ci~ gniQQnHarpacticoida
105 1
17
1000 67
400
60102 572
9731
25553 2217
19970 Chironollid larvae 16 667 9158 8B6B
Hean number of organismssample 677 Standard deviation 199
M ean num b I 2er 0 f organIsms AI 580986 Standard deviation 171095
w = 202 SD= 062 SR= 1 10 J= 056
95 C
A-7
STATION 58 Date 18 April 1984 Depth 67 m Salinity (bottom) 00 ppt Temperature (botto) No of samples 15
Frequency Density (nom2) Total occurrence
Taxa number (~) X SD
Nemertea 62 933 35489 26338 Nematoda 224 1000 128218 49903 Turbellaria 9 600 5152 4354 ~nt~sect imni~Q Oligochaeta
1 79
67 1000
572 45220
2217 23506
bnQgYRhY~ Yi~~nE ~Q(~i~Y nil~ni Ostracoda
2 10 19
67 533 600
1145 5724
10876
4434 6214
10989 ~Q[QeniY sectQOiHarpacticoida
30 2
B67 133
17172 1145
12142 3021
Heleidae larvae 6 333 3434 5430 Chironomid larvae 9 400 5152 7B1 5 Chironomid pupae 2 133 1145 3021
Mean number of organismssample 303 Standard deviation 94
I 11 ean num ber 0 f organlsms 2 260442 Standard deviation 81043
H= 233 SO= 070 SR= 1 36 J= 063
97 C
A-B
Frequency Density (nolm 2) Total occurrence -----------------
Taxa number (7) X SD
Nemertea 16 467 9158 10989 Nematoda 266 1000 152258 54541 Turbellaria 23 600 13165 15518 ~l~nH ~Q~iQH 2 133 1145 3021 Oligochaeta 181 1000 103604 56532 bi~hQg~Qn~~ ~it~l~ ~QtQifg mli~lsectisectOstracoda
3 59 15
200 1000 733
1717 33772 8586
3555 23054
7256 ~Q[QQhiY HmQtlsect ~Q[QehiYm sect21tlfQ[lg EQlQQQt~i hQ~i
466 3 1
1000 200 67
266738 171 7 572
75094 3555 221 7
Harpacticoida 30 400 17172 40402 Chironomid larvae 10 533 5724 6214
Mean number of organismssa_pIe 717 Standard deviation 143
I 2Mean number 0 f organlsms m 615330 Standard deviation 122532
H= 226 SO= 072 SR= 119 J= 061
STATION 55 Date 18 April 1984 Depth 30 1ft
Salinity (bottom) 00 ppt Temperature (bottom) 93 C No of SaIIples 15
A-9
STATION 45 Date 4 Hay 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 103 C No of samples 10
Frequency Density (noI2) Total occurrence ---------------- shy
Taxa number (Xl X SD
Neutoda 269 1000 230963 167296 Turbellaria 1 100 859 2715 ~u~yuti Q~iQ ~Ub imni~Q
1 2
100 100
859 171 7
2715 5430
j2~Qn flec Oligochaeta
28 169
BOO 1000
24041 145103
19326 74351
~igeYk~ll iulCIDai ~Q(Qi~Y uini Ostracoda
32 4 5
aoo 400
400
27475 3434 4293
22463 4434 6071
biQQ~~tbt sp ~e(QQbYm mQoi sectampQeD ~nQDisect Chironomid larvae
25 2
578 2
900 200
1000 200
21465 1717
496271 171 7
15279 3620
293820 3620
Mean number of organismssample 111 8 Standard deviation 522
11 b f I 2ean num er 0 organIsms m 95991 5 Standard deviation 447842
H= 193 SD= 065 SR= 118 J= 052
A-10
STATION 18 Date 4 Hay 1984 Depth 34 II
Salinity (bottom) 00 ppt Temperature (bottom) 104 C No of saMples 10
Frequency Density (noI 2 ) occurrence ----------------shy
Taxa (X) X SD
Nemertea 10 600 8SB6 10709 Nuatoda 153 1000 131366 47899 Turbellaria 8 600 6869 6773 ~n1b limnpoundQl Oligochaeta
11 147
700 1000
middot9445 126214
9449 6231 7
~i~g~kXl in1(m~i ~g(2iY OiOi Ostracoda
86 4 1
900 300 100
73840 3434 859
61543 6003 2715
bimoQpoundx1b( sp ~2(QQbiYm mgoiDi ptera adult
3 57
3
300 900 300
2576 48940
2576
4147 21815 4147
Chironomid larvae 4 300 3434 6003 Chironomid pupae 1 100 859 2715
Hean nUMber of orQanismssample 489 Standard deviation 160
b f 2nean nUll er 0 organIsms II 418997 Standard deviation 137721
H= 243 SD= 076 SR= 1 34 J= 066
A-l1
STATION 5B Date 4 Hay 1984 Depth 61 bull Salinity (botto~) 00 ppt Temperature (bottom) 110 C No of suples 10
Frequency Density (nom 2) Total occurrence ---------------- shy
Taxa number (X) X SD
Neertn 41 1000 35203 21206 Nematoda 211 1000 181165 53305 Turbellaria 4 200 3434 7240 Oligochaeta 89 1000 76415 32240 ~i~2~~~11~ iU1(~i~bi1begygny YitQ ~e(biYl ~OiDi OstracDda
4 3
20 1
400 200 BOO 100
3434 2576
17172 859
4434 5795
19829 2715
biue~1bt~ sp ~2(egniY Imeoi sectg11g1O OdD Helei dae larvae
5 32
1 1
400 900 100 100
4293 27475
859 859
6071 18010 2715 2715
Chironomid larvae 7 400 6010 9096
Mean number of organismssample 419 Standard deviation 93
b f 2ean nUll er 0 organIsms m 359753 Standard deviation 79875
H= 221 SD= 068 SR= 138 J= 060
A-12
Frequency Density (nolm 2) occurrence -----------------
Taxa (X) X SD
Nemertea 23 900 1974S 15171 Neutollorpha 1 100 859 271 5 Nellatoda 269 1000 230963 69923 Turbellaria 10 600 8586 991 4 ~~xYnki Q~ampiQ 4 300 3434 6003 ~nb limnipoundQl Oligochaeta
1 79
100 1000
859 67829
2715 40363
~i~Q~kXl io[~i biDe9XQDX ~i[~OBi valvi a
11 3 1
800 300 100
9445 2576 859
6335 4147 271 5
~Q[~poundY mnil~n bimoQampXD[ sp ~Q[QabiY lQO Harpacticoida
18 2
159 1
700 200
1000 100
15455 171 7
135659 859
13904 3620
54272 2715
Chironomid larvae 2 200 171 7 3620 Trichoptera larvae 1 100 859 2715
STATION 55 Date 4 May 1984 Depth 21 m Salinity (bottom) 00 ppt Temperature (bottom) 107 C No of suples 10
Mean number of organismssamples 594 Standard deviation 147
Mean number of organismsm2 501422 Standard deviation 126525
H= 219 aD= 069 SR= 1 63 J= 055
A-13
STATION 45 Date 17 May 1984 Depth 61 m Sal i ni ty (bottom) 01 ppt Temperature (bottom) 121 C No of sampl es 10
Frequency Total occurrence
Taxa nUlllber (7)
NelDertea 1 100 859 2715 Nematoda 163 1000 139952 127996 Polychaeta 1 100 859 2715 ~~~n~h~ imni~Qs Hobsonia florida
2 6
200 600
171 7 5152
3620 4434
Oligochaeta 329 1000 282479 13291 8 ~~lQQYsectk~~12 in~~rmQi 57 900 48940 33142 ~Qr~ipound~2 ffi2niDi 6 500 5152 6003 Ostracoda 5 200 4293 10898 bimDg~yth( SPa 13 600 11162 12176 ~Q(Qebi~m sectQDisect Harpacticaida
2 2
200 100
1717 1717
3620 5430
2poundQttQD poundDQDsectisectDiptera adult
296 1
1000 100
254146 859
172633 271 5
Mean number of organismssample 884 Standard deviation 326
b f I 2nean num er 0 organlss m 759002 Standard deviation 280131
H= 209 SD= 071 SR= 1 33 J= 055
A-14
STATION 18 Date 17 May 1984 Depth 30 m Salinity (bottom) 00 ppt Temperature (bottom) 122 C No of samples 12
Frequency Density (nom2) Total occurrence -----------------
Taxa number (X) X SD
Nematoda 50 833 35775 22815 ~ntb limnipoundQl 3 Oligochaeta 97
250 833
2147 69404
3883 48495
~igQ~~k~ intr~ 27 ~QrQipoundY mnin~i~ 5
667 333
19319 3S7S
19068 5740
Ostracoda 1 83 716 2479 bimnQpound~nr sp 5 ~Q(Q~bY ~mQni S4 ~Q(Q~niY ~QinipoundQ(n 3
333 833 250
3578 60102
2147
5740 43780 3883
fgnQ2Q(i bQ~i 1 sectpoundQtgO poundnQn~i 2 Chironomid larvae 4
83 167 250
716 1431 2862
2479 3342 5592
Mean number of organismssample 235 Standard deviation 116
nean nURl b er 0 f organlslls II 2 201771 Standard devi ati on 99221
H= 236 SD= 075 SR= 1 35 J= 066
A-15
STATION 58 Date 17 May 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) 123 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nemertea 2 100 171 7 5430 Nematoda 75 1000 64395 34404 ~~2Qih~a limQi~Q 2 200 171 7 3620 Oligochaeta 60 1000 51516 33376 ~~igQY~~~12 iQ~[~~gi 2 200 171 7 3620 bitQQ9~Bh~sect Yr~Qsect 3 200 2576 579~
gQ[Qi~Yl ID2Dil~nsectisect Ostracoda
6 6
500 400
5152 5152
6003 8295
binQ~~nr[ sp gg[QQOYm mQQsect sect~QttQn 5n2Q~nsectia Chironomid larvae
2 34
1 1
200 1000
100 100
171 7 29192
859 859
3620 12927 271 5 2715
Mean number of organismssample 194 Standard deviation
2Mean nurn ber 0 f organIsms fA 166568 Standard deviation 56259
H= 225 SD= 072 SR= 1 45 J= 063
A-16
66
STATION 55 Date 17 May 1984 Depth 24 II
Salinity (bottom) 00 ppt Telllperature (bottom) 126 C No of samples 10
Total Frequency occurrence
Taxa nUllber (X) X SD --------------------------------------------------------------~-----------
Nematollorpha 2 200 171 7 3620 Nematoda 63 1000 54092 35297 Oligochaeta 94 1000 80708 44004 ~~iQQY~k~~l iQt~(m~Qi bitnQg~Qh~~ Yi[~Q gQ[QipoundY~ mni~Q~i Ostracoda
10 9 4 2
600 800 300 100
8586 7727 3434 171 7
9050 4874 6003 5430
bimnQ~~ln~[e sp ~Q(QQbiYm mQD ~Q[QQbiYm 2inipoundQ[n~ Chironomid larvae
6 142
3 1
600 1000 200 100
5152 121921
2576 859
4434 50682 5795 2715
Mean number of organismssample 336 Standard deviation 62
2Mean num ber 0 f organisms m 288490 Standard deviation 53421
H= 214 SD= 071 SR= 119 J= 062
A-17
STATION 45 Date 1 June 1984 Depth 61 m Salinity (bottom) 01 ppt Temperature (bottom) 139 C No of samples 10
Total Frequency occurrence
Density (no2)
Taxa nUllber (1) X SD
Nematoda 174 900 149396 132347 Turbellaria 5 200 4293 10898 ~~~QiQ~sect tmQtpoundQ~ ~QQsectQ flQi~sect Oligochaeta ~~iQQysecttygl~ iQl~rm~~i2 ~Q[Qi~~l~ ~~DilgDsectisect Ostracoda
5 20
190 103
12 5
400 900
1000 900
60 (I 400
4293 17172
163134 88436 10303 4293
6071 8095
92563 51524 11304 6071
bimnQpoundytng[ sp ~gQmYsectisect IDg[pound~Qisect ~Q[QQhi~m sectlmQDisect sectpoundQtiQlsectQ pound~Qgsectisect ChironQmid larvae
33 1
10 375
2
900 100 700
1000 200
28334 859
8586 321975
171 7
17196 2715 7010
179201 3620
Mean number of organismssample 935 Standard deviation 254
nurn b 0 f 2lean er organlsms m 802791 Standard deviation 218423
H= 239 SD= 075 SR= 1 22 J= 065
A-18
STATION 18 Date 1 June 1984 Depth 30 AI
Salinity (bottom) 00 ppt Temperature (bottom) 134 C No of samples 11
Frequency Density (no 1m2)
Taxa Total number
occurrence (X)
---------------- shyX SD
Turbellaria 14 636 10928 1157 7 ~~~Qltlg~ ilipoundQ~ Oligochaeta
10 178
727 1000
7805 138937
601 6 67913
~~iQQy~tY~l~ ill~[m~Qi~ 122 636 95227 93619 ~Q[Qipound~ l~i~lsectisect Ostracoda
7 1
455 9 1
5464 78 1
6946 2589
billQylhg[ Spa 16 818 12489 10420 GQ[QQQil HQi~ 139 1000 108496 70934 gQ[Qebi secteiifQ[~ sectQiiQi2 ~Q~sectisect Diptera pupae
1 2 1
9 1 182
11 1
781 1561 781
2589 3473 2589
Chironomid larvae 2 182 1561 3473
Mean number of organismssample 714 Standard deviation 284
nean num b er 0 f organlsms m 2 612728 Standard deviation 244249
H= 232 SD= 075 SR= 1 25 J= 063
A-19
STATION 58 Date 1 June 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 138 C No of samples 10
Frequency Density (noI 2 ) Total occurrence
Taxa number (X) X SD
Nematoda 173 1000 148538 47383 Turbellaria 3 300 2576 4147 Oligochaeta 53 1000 45506 32139 ~giQgY2k~g~ ini~[m~Qi~ bQg91YehY2 Yi[~nsect ~Qr~i~Yl m~nl~n~i
26 1
10
600 100 500
22324 859
8586
3391 2 2715
13424 bimnQpound~Q~[ sp ~Q9~m[Y poundgnitYpoundQlysect ~QtQehiYm ~lQni
4 1
46
200 100
1000
3434 859
39496
8295 2715
22243 Chironomid larvae 1 100 859 271 5
Mean number of organismssample 318 standard deviation 103
M b f I 2ean num er 0 organlsms III 273035 Standard deviation 88842
H = 1 99 SD= 065 SR= 1 08 J= 060
A-20
STATION 55 Date 1 June 1984 Depth 27 m Salinity (bottom) 00 ppt Temp era t u r e (b 0 t tom) 140 C No of samples 10
Frequency Density (nom 2 ) Total occurrence
Taxa nueber (X) X SD
Nematoda 157 1000 134800 69524 Turbellaria 9 400 7727 13696 tlHl~lk ~2~~iQH 1 100 859 2715 Oligochaeta 49 1000 42071 32745 ~~iQQysect~gl~ S[l9sect bHbQghQb~~ Yirl~
10 1
400 100
8586 859
12799 2715
tQ[Qpoundls l2lilUsect bilQHSbg[ sp ~QrQQbil nllQisectHarpacticoida
4 7
134 1
400 500
1000 100
3434 6010
115052 859
4434 7069
44742 271 5
sectpoundQUQlls poundsQgn~sect Chironomid larvae
1 1
100 100
859 859
271 5 2715
Hydracarina 1 100 859 2715
Hean number of organismssample 376 Standard deviation 132
M b f 2ean num er 0 organIsms m 322834 Standard deviation 113127
H= 202 SD= 068 SR= 1 40 J= 055
A-21
STATION 45 Date 18 June 1984 Depth 67 m Salinity (bottom) 01 ppt Temperature (bottom) 149 C No of samples 10
Frequency Density (nom2)
Taxa Total nUllber
occurrence ex) i SD
Nematoda 109 1000 93587 3891 7 Turbell ari a 3 200 2576 5795 ~g~tbg limoipoundQl Q~Qni2 fQ(i~2 Oligochaeta ~gigQ~~Y inl[ggi ~Q[QiSY2 moilo Ostracoda
3 2
194 44
7 3
200 200
1000 1000 200 200
2576 171 7
16656B 37778 6010 2576
5795 3620
118364 36020 12831 5795
bimoQampl~n~[2 sp ~Q[QQbiYm lmgoi Harpacticoida sectpoundQQ1202 pound2022Osect Chironomid larvae
68 1 1
113 2
900 100 100
1000 200
58385 859 859
97022 171 7
97627 2715 2715
73976 3620
Mean number of organismssa_pie 550 Standard deviation 371
Mean nUll ber 0 f organIsms 2II 472230 Standard deviation 318519
H= 242 SD= 077 SR= 1 32 Ja 065
A-22
STATION 18 Date 18 June 1984 Depth 34 m Salinity (bottom) 00 ppt Temperature (bottom) 155 C No of samples 10
Frequency Density (nom 2) Total occurrence ----------------shy
Taxa nUlber (Z) X SD
Neutoda 291 1000 249853 138826 Turbellaria 1 100 859 2715 ~~n~~nki~ sectQ~~iQ~2 ~g~ntbg2 limni~Q9 Oligochaeta
1 3
123
100 300
1000
859 2576
105608
271 5 4147
48240 ~~igQY~~~~9 int~(mgii ~Q[~i~~~ mini~ni bimnQ~ylbg(~ Spa
67 6 5
1000 500 400
57526 5152 4293
40485 6003 6071
~Q(QebiYm ~imQnisect Harpacticoida
80 2
1000 200
68688 171 7
41276 3620
sect~QttQini ~2nig~n~i Chironomid larvae
2 4
200 300
171 7 3434
3620 6003
Mean number of organismssample 585 Standard deviation 194
I 2Mean urn b er 0 f organIsms m 502281 Standard deviation 166943
H= 203 SD= 068 SR= 1 20 J= 057
A-23
STATI ON 58 Date 18 June 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (noI 2) Total occurrence
TaKa number (X) X SD
Nellertea 2 100 1717 5430 Nematoda 160 1000 137376 6361 1 Turbellaria 4 400 3434 4434 Oligochaeta 36 1000 3091 0 14705 ~iQQYik~ Q1rQ 4 300 3434 6003 bitnQgl~ebysect YrDsect ~Q[QiY~ ~~nni biQQpoundY1h[ sp ~Q[Qeng ~ilQD Chironomid larvae
3 1 3
61 1
300 100 300
1000 100
2576 859
2576 52375
859
4147 2715 4147
1428 1 2715
Chironollid pupae 1 100 859 271 5
Mean number of organismssample 276 standard deviation 72
nean nurn b er 0 f organIsms I 2 236974 Standard deviation 61410
H = 1 78 SD= 060 SR= 1 23 J= 051
A-24
STATION 55 Date 18 June 1984 Depth 18 m Salinity (bottom)1 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (no 1m2) occurrence
Taxa (X) X SD
Nematoda 160 1000 137376 43967 Turbellaria 1 100 859 271 5 Oligochaeta 61 1000 52375 31985 ~~iQQY~kY~~ int~[mQi~ ~Q[Qipound~l~ m~nini~ biIDnQ~Ylb[s sp
3 3 3
300 300 300
2576 2576 2576
4147 4147 4147
~Q[Q~bi~ ~slIDQni~ Chironomid larvae
85 6
1000 600
72981 5152
34165 4434
Mean number of organismssample 322 Standard deviation 75
2Mean number 0 f organIsms m 276469 Standard deviation 64099
H= 178 5D= 065 SR= 0B4 J= 059
A-25
Frequency Density (no2) occurrence -----------------
Taxa (7) X SD
Nematoda 104 1000 89294 47409 Turbell ar i a 1 100 859 2715 ~~~nQ~sect imni~Q~ tjQQsectQlis flQig~ Oligochaeta
2 1
297
100 100
1000
171 7 859
255004
5430 271 5
146273 ~~i~QYsect~Y~lls ilr2is gQrQi~y~ IDDilDia
24 4
600 300
20606 3434
27212 6003
Ostracoda 2 200 171 7 3620 biDQSy~b~C~ sp M~QYsectisect m~r~~Qi ~QrQeniy QD Harpacticoida
157 1 1 1
900 100 100 100
134800 859 859 859
73197 2715 2715 2715
sectpoundQttQDs SsDQD 113 900 97022 61656
STATION 45 Date 2 July 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) No of samples 10
172 C
Mean number of organismssample 708 Standard deviation 339
M ean num b er f 20 organisms 607889 Standard deviation 290B22
H= 216 SD= 073 SR= 1 27 J= 058
1-26
STATION 18 Date 2 July 1984 Depth 24 WI
Sal inity (bottom) 00 ppt Temperature (bottom) 172 C No of samples 10
--------------------------------~-----------------------------------------Frequency Density (nom2)
Total occurrence Taxa number (7) X SD
Nematoda 202 1000 173437 113532 ~~~nih~sect mnpoundQ~ Oligochleta
4 102
400 1000
3434 87577
4434 54873
~~igQYsect~Y~12 inl~rmgi2 ~Q[~poundYl~ m~ni~nsectisect bimnQpoundylh~[~ Spa
115 4
15
900 300 900
98739 3434
12879
100720 6003 9274
~Q[QQniY~ sect~QDi~ 55 900 47223 40525 Harpacticoida 1 100 859 2715 sectpoundQiiQlD SDg~DEisect Chironomid larvae
2 6
200 400
1717 5152
3620 7240
Hymenoptera 1 100 859 2715 Hydracarina 1 100 859 2715
Mean number of organismssample 508 Standard deviation 253
2Mean num ber 0 f organIsms m 436169 Standard deviation 217580
H= 225 SD= 074 SR= 1 22 J= 063
A-27
STATION 58 Date 2 July 1984 Depth 58 1
Salinity (bottom) 00 ppt Temperature (bottom) IBO C No of samples 10
Frequency Density (no2) Total occurrence
Taxa number ltX) i SD
Nematoda 151 1000 129649 42729 Turbellaria 1 100 859 2715 01 i gochaeta 41 1000 35203 22698 ~~i~e~~~ int~~m~~ 3 200 2576 5795 btbQglYRhY~ Yir~n~ ~e~~ampy mni~niii bimQeamp~tb~ sp ~e~eQhiY ~mQni Chironomid larvae
1 4 2
68 1
100 300 200
1000 100
859 3434 171 7
58385 859
271 5 6003 3620
1557 1 2715
Mean number of organisassample 272 Standard deviation
I 2Mean num ber 0 f organIsms I 233539 Standard deviation 62546
H = 1 69 SD= 061 SR= 099 J= 053
A-28
73
STATION 55 Date 2 July 1984 Depth 15 III
Salinity (bottom) 00 ppt Temperature (bottom) 182 C No of samples 10
Frequency Density (nom2) occurrence
Taxa (X) X SD
Nematoda 184 1()00 157982 5264B Turbellaria 1 100 859 271 5 Oligochaeta ~~iQQ~sect~Y~ll~ n~[~~Qi~ bitnggYQDYsect Yi[~nsect ~QrQipoundM2 m2ni~nsectisect bimnQpoundYn~[2 sp ~QrQQhiM Qni Harpacticoida
91 2 1 B 2
96 2
1000 200 100 500 200
1000 200
78133 171 7 859
6869 171 7
82426 1111
26058 3620 271 5 1890 3620shy
25980 3620
ChirDnomid larvae 5 400 4293 6071 Chironolllid pupae 1 100 859 2715
Mean number of organismssample 393 Standard deviation 53
2t1ean nUllber Df organlsms III 337430 Standard deviatiDn 45080
H= 187 SD= 067 SR= 116 J= 054
A-29
STATION 45 Date 17 Jul y 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (X) X SD
Nematoda 215 1000 184599 45837 ~~n~b~~ imDipoundQ Qe~Qni fllHi2
3 1
300 100
2576 859
4147 2715
Oligochaeta 305 1000 261873 147955 ~~iQQY~k~ in~rm~2i ~Qr~ipoundYl IDniln~i~ Ostracoda
17 1 2
500 100 200
14590 859
171 7
22554 2715 3620
bmnQpound~ihr sp ~QCQQhiY ~lQD~
176 1
1000 100
151114 859
57125 2715
Harpacticoida 4 300 3434 6003 sectQ~~Qn poundnQnai~ Chironomid larvae
91 5
1000 400
78133 4293
61310 6071
Mean number of organismssample 821 Standard deviation 275
M b f 2ean num er 0 organlsms m 70491 1 Standard deviation 236369
H= 215 SD= 073 SR= 114 J= 060
A-30
STATION 18 Date 17 Jul y 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom 203 C No of samples 10
Frequency Density (001 2 Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 339 1000 291065 119140 Turbellaria 3 200 2576 5795 ~~2~b~~ limnipoundQ12Oligochaeta
4 18S
300 1000
3434 161417
6003 89393
~~iQQy~~~ls in~(ID~Qi bim~Qampy~bg(2 Spa
34 16
800 700
29192 1373B
22967 15252
~g(gebi~m ~21mQni2 Harpacticoida
52 3
1000 200
44647 2576
25212 5795
2ampQ11Q1202 ampS02Qg~2i2 Chironomid larvae
18 10
700 700
15455 8586
13904 701 0
Mean number of organi$mssample 667 Standard deviation IBB
H ean nurn b er 1 20 f organIsms m 572686 Standard deviation 161750
H = 1 99 SD= 065 SR= 090 J= 060
A-31
STATION 58 Date 17 July 1984 Depth 55 AI
Salinity (bottom) 00 ppt Temperature (bottom) 197 C No of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nellatoda 173 1000 14853B 66390 Turbellaria 1 100 859 271 5 ~~~n~hu ini~QA Oligochaeta
1 46
100 1000
859 39496
2715 26293
~gipoundQy~~ygl2 in~rJg~i~ b1nQglYRnY~ Yi( Bivalvia
6 2 1
400 200 100
5152 1717 859
8295 3620 271 5
ei~ IDnH~n~i~ 2 200 171 7 3620 Ostracoda 1 100 959 271 5 biIDQHlh~( Spa ~Q(QRbim ~21Qnisect Diptera pupae
1 94
1
100 1000 100
859 80708
859
2715 35332 2715
Heleidae 1arvae 5 500 4293 4525 Chironomid larvae 1 100 859 2715
Mean number of organismssample 335 Standard deviatiDn 113
Mean number of organismsRI2 287631 Standard deviation 97413
H= 1 86 SO= 064 SR= 155 J= 049
A-32
STATION 55 Date 17 July 1984 Depth 18 m Sali nity (bottom) 00 ppt TeAlperature (bottom) 199 C No of samples 10
Frequency Density (nom2 ) occurrence
Taxa (X) x S D
Nematoda 61 1000 52375 33972 Turbellaria 1 100 859 2715 Oligochaeta 24 900 20606 11590 ~~i2QY~k~~1 iOi[2 bimDQ~xlb~r sp ~Q[QQhi~ sectgni~ Chironomid larvae
3 1
38 3
200 100
1000 300
2576 859
32627 2576
5795 2715
19326 4147
Mean number of organismssample 131 standard deviation 54
M b f 2ean num er 0 organIsms 112477 Standard deviation 46757
H= 184 SD= 066 SR= 085 J= 065
bull
A-33
STATION 45 Date 1 August 1984 Depth 58 m Sal i nity (bottoll) 03 ppt Temperature (bottom) 203 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa nUllber (X) X SD
Nematoda 145 1000 124417 52344 Turbellaria 1 100 859 2715 Mmth~sect iHpoundQ~ Q~~Qi ilQ[i9Oligochaeta
5 3
196
500 300
1000
4293 2576
168286
4525 4147
91064 ~igQYsect~~li int9i Ostracoda
2 3
100 300
171 7 2576
5430 4147
bimnQpoundtl sp ~Q[Q2hiY sectlQni~
240 6
1000 600
206064 5152
73526 4434
sectpoundQtQl poundngnai~Helei dae larvae
1862 1
1000 100
1598713 859
966134 271 ~
Mean number of organismssample 2464 Standard deviation 1156
211 ean num ber 0 f organIsms II 2115590 Standard deviation 992518
H= 124 SD= 041 SR= 089 J= 036
A-34
STATION 1S Date 1 August 1984 Depth 24 II
Salinity (bottom) 00 ppt Temperature (bottom) 198 C No of samp I es 10
Frequency Density (nom2) occurrence ---------------- shy
Taxa (X) X S D
Nuertea 1 100 859 2715 Nellatolllorpha 1 100 859 2715 Nematoda 248 1000 212933 108288 Turbellaria 4 400 3434 4434 ~untb~la Hli~g Oligochaeta
4 206
400 1000
3434 176872
4434 75309
~~igQYli~dli i[t~(gi~ ~QtQpound l binQ~ybt2 sp ~2l~bi Q[i ~2tlgtQ(ila tirisect sectpoundQtel poundl9lla Chironomid larvae
10 1
20 205
1 574
9
500 100 800
1000 100
1000 400
8586 859
17172 176013
859 492836
7727
10709 271 5
14021 48104
271 5 150531
13696
Mean number of organismssample 1284 Standard deviation 290
M b f I 2ean nurn er 0 organIsms III 1102442 Standard deviation 2488B5
H= 211 SD= 071 SR= 1 16 J= 057
A-35
STATION 58 Date 1 August 1984 Depth 55 m Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samp 1es 10
Frequency Densi ty _ ltnom2 ) Total occurrence
Taxa number (7) X SD
Nemertea 1 100 859 2715 Nematoda 22 900 18889 15036 Turbellaria 1 100 859 2715 Oligochaeta 19 700 16313 17385 biiQQgl~QhY~ YiCg~~ 2 200 171 7 3620 ~Q[~i~~l~ m2nil~n2i2 ~Q[QehiYm ~lmQni2
4 164
300 1000
3434 140810
6003 103048
Heleidae larvae 8 500 6869 8868
Mean number of organismssample 221 Standard deviation 111
I 2Mean num ber 0 f organIsms m 189751 Standard deviation 95391
H = L 37 SD= 043 SR= 090 J= 046
A-36
STATION 55 Date 1 August 1984 Depth 15 m Salinity (bottoll) 01 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (i ) X SD
Nemertea 1 100 859 2715 Neutoda 122 1000 104749 7394B Turbellaria 4 300 3434 6003 ~~~~~nt~ secte~poundQa~ Oligochaeta
1 118
100 1000
859 101315
2715 61223
~giQgY~k~~l iot~[m~Qi btbQg~2b~ Y[O ~grQipound~ ~nl~ni b~ngpound~tb~[ Spa
3 1 5 1
200 100 500 100
2576 859
4293 859
5795 2715 4525 2715
~Q[QebiYm ~mQoi sect~QttQ~ ~OQOi Heleidae larvae
42 2 2
800 200 100
36061 171 7 171 7
21341 3620 5430
Chironomid larvae 4 400 3434 4434
Mean number of organismssapIe 306 Standard deviation 169
M b f I 2ean nurn er 0 organIsms m 262732 Standard deviation 145101
H = 198 SD= 067 SR= 1 45 J= 054
A-37
~-- --------------~~-------------
STATION 45 Date 17 August 1984 Depth 61 1
Salinity (bottom) 10 ppt Temperature (bottom) 210 C No of samp 1es 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nematoda 240 1000 206064 130213 ~~h~sect limQ tjQ~~Hi~ fQ[i~~ Oligochaeta
31 2
245
400 100
1000
26617 1717
210357
75228 5430
121374 babgglYQbl~ Yi[~sect 1 100 859 2715 Ostracoda 1 100 859 271 5 biQ~xtb~[ Spa ~~Q~~isect ~[pound~Qisect ~Qgebi HQOi
333 2
143
1000 200
1000
28591 4 171 7
1227BO
106553 3620
106860 sectpoundQUg~ poundg~nsectisect 1738 1000 1492247 68441 7
Mean number of organismssample 2736 Standard deviation 944
M b f I 2ean num er 0 organlslls m 2349130 Standard deviation 810600
H= 172 SD= 056 SR= 079 J= 052
A-38
STATION 18 Date 17 August 1984 Depth 27 III
Sal i ni ty (botto) 01 ppt Temperature (bottom) 214 C No of samples 10
Frequency Density (nom 2 ) occurrence
Taxa (X) X SD
Nematoda 186 1000 159700 62468 ~tgt SPa 2 100 171 7 5430 Turbellaria 8 400 6869 8868 ~~ntbg2 imnipoundQ 12 700 10303 11304 Oligochaeta 283 1000 242984 90509 ~~iQQY~~Y~lls inlgtmggisBivalvia
4 1
400 100
3434 859
4434 271 5
~Qt~i~Y nilnsectisectbimnQpoundttbg[s SPa ~QtQQbi~ islmQDi2
1 17
286
100 900
1000
859 14596
245560
271 5 10747 83461
sectpoundetteln poundDsggnsectisect Chironomid larvae
526 4
1000 3Q0
451624 3434
179610 6003
Mean number of organismssapIe 1330 Standard deviation 162
Mean nurn ber I 20 f organIsms m 1141938 Standard deviation 139389
H= 214 SD= 073 SR= 1 06 J= 060
A-39
STATION 58 Date 17 August 1984 Depth 55 II
Salinity (bottom) 01 ppt Temperature (bottom) 220 C ND of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (7) x S D
Nematoda 68 1000 58385 27689 Turbellar i a 4 200 3434 8295 Oligochaeta 19 800 16313 13084 ~~i~Q~k~~l~ in~~[m~i bitUQ9Y2bYa Yi[~na Bivalvia
3 3 4
300 300 300
2576 2576 3434
4147 4147 6003
gQ[QipoundYl~ mnilDa 1 100 859 2715 binQpoundY~[ sp gQ[Q2UY a~mgnia sect~Qtgl~n ~n~~ni
2 338
6
100 1000 400
171 7 290207
5152
5430 56636 7240
Mean number of organismssample 448 Standard deviation 72
W b f 2lean num er 0 organlsms II 384653 Standard deviation 61988
H = 1 27 SD= 041 SR= 1 02 J= 038
A-40
STATION 55 Date 17 August 1984 Depth 18 m Salinity (bottom) 00 ppt Temperature (bottol) 223 C No of samples 10
Frequency Density (nom 2 ) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 291 1000 249853 118104 Turbellaria 1 100 859 2715 M~ntb~ mni~Q Oligochaeta
1 47
100 1000
859 40354
2715 28347
~~iQQ~sectkY~ll int~[m~gi bitbQQ1YSDY Yi(gn Bivalvia
25 12
6
900 500 400
21465 10303 5152
1231 0 18459 7240
~Q~2ipoundY mnil~ni Ostracoda
11 8
400 600
9445 6869
12442 6773
bmnQpoundYb~r~ SPa 52 1000 44647 19746 ~QrQsbY lmgnisectsQiielo snQ~ni~ Chironomid larvae
43 5
15
1000 400 BOO
36920 4293
12879
21436 6071 8344
Mean number of organismssample 517 Standard deviation 174
M b f I 2ean num er 0 organlsms m 443896 Standard deviation 149431
W = 228 SD= 065 SR= 1 33 J= 062
A-41
STATION 45 Date 29 August 1984 Depth 55 III
Salinity (bottom) 07 ppt Temperature (bottom) 199 C No of samples 10
Frequency Density (noI 2) Total occurrence
Taxa number (X) X SD
Nematoda 192 1000 164851 98380 ~sntbsect limnipoundQlDligochaeta
2 198
200 1000
171 7 170003
3620 67339
~Q[eipoundYls msniln~isect Ostracoda
1 4
100 400
859 3434
2715 4434
bimnQpoundytb[s Spa gQ[Qeniy sect21QOi~ sectpoundQttQlsO poundsOsggOi
164 87
2468
1000 1000 1000
140810 74698
2119025
39283 39460
840890
Mean number of organismssample 311 6 Standard deviation 101 1
ill b f 2nean nUll er 0 organIsms 2675398 Standard deviation 8682B8
W= 116 SD= 036 SR= 060 J= 039
A-42
STATION 18 Date 29 August 1984 Depth 30 bull Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samples 10
Total Frequency occurrence
Densi ty 2
(nom )
Taxa number (~ ) x S D
Nematoda 150 1000 128790 28905 Turbellaria 7 400 6010 9096 ~nh imni~Qj Oligochaeta ~~i~2Y~k~~1 ini~CIDgii bih2g~Qb~ Yi(~U2 Bivalvi a
B 145
1 1 2
600 1000
100 100 200
6869 124497
859 859
171 7
677 3 84732
271S 2715 3620
~Q[Qi~yli miDllgni bimn2pound~ih~C sp ~QtQehiY imQUia Harpacticoida
7 7
265 1
500 300
1000 100
6010 601 0
227529 859
8145 10747
139462 2715
sect~QtiQDi ~Q~Q~i~ Chironomid larvae
2471 2
1000 200
2121601 171 7
1063112 3620
Mean number of organismssample 3067 Standard deviation 121 9
2Mean number 0 f organIsms m 2633326 standard deviation 1046718
H = 1 09 SD= 034 SR= 1 04 J= 029
A-43
STATION 58 Date 29 August 1984 Depth 55 111
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (noI 2 ) Total occurrence -----------------
Taxa nUllber (X) X SD
Nemertea 4 400 3434 4434 Nuatoda 64 1000 54950 25016 Turbellaria 9 400 7727 11047 ~Hl~b limli~Q19 Oligochaeta
1 37
100 1000
859 31769
2715 19006
i~Qyh il(~~ bHtlQSlheln Yl Bivalvia
4 4
20
200 300 400
3434 3434
17172
8215 6003
26541 ~e(ijY l bQ~dlH sp
26 1
700 100
22324 859
25662 2715
~Q[QQhil iQ sectjgUell HD Heleidae larvae
418 20
1
1000 800 100
358895 17172
859
129443 12799 271 5
Mean number of organismssample 609 Standard deviation 175
nean num b er 0 f organIsms 1 111 2 522887 Standard deviation 150164
H= 176 SD= 051 SR= 1 30 J= 047
A-44
I I
I
I
STATION SS
Date 29 August 1984 Depth 21 1
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (no2) Total occurrence
Taxa nUllber (X) x S D
Nematoda ISO 1000 128790 37969 Turbellaria 1 100 859 271 5 Oligochaeta 48 1000 41213 16088 ~i~g~sect~~l iQ~~mgi bi~QQg~gb~sect ~i~nsect
10 14
600 600
eSB6 12020
9050 14137
Bivalvia 4 200 3434 7240 ~Q[Q~Yl niQaa Ostracoda
15 7
700 SOO
12879 6010
15806 7069
bmQg~~~b~ SPa 14 800 12020 8295 ~g[gaby mgni sect~g~~Qn ~ngnai Chironomid larvae
IB4 25 9
1000 900 700
157982 21465
7727
35563 16810 6335shy
Mean number of organismssample 481 Standard deviation B6
2Mean number 0 f organlsms m 412987 Standard deviation 74131
H= 24S SD= 074 SR= 1 23 J= 068
A-45
STATION 45 Date 14 September 1984 Depth 61 11
Salinity (bottom) 03 ppt Temperature (bottom) IB4 C No of samples 10
---------------------------------~----------------------------------------
Taxa TotalnUlllDer
Frequency occ~~~ence
Density (no 2) -----X-------sect7B
Nematoda 189 1000 162275 85233 t1tQ SPa
Turbellaria 2 2
200 100
171 7 171 7
3620 5430
~~~nIng limoifQl t1QQQDi~ flQriQ Oligochaeta
5 19
142
400 800
1000
4293 1631 3
121921
6071 12442 30504
~QQifYl mDl~D bimoQpoundt1hgr Spa Cumacea
19 184
2
800 1000 200
1631 3 157982
171 7
130B4 69541 3620
~Q[QnniYm ~~lmQDi Harpacticoida
118 1
1000 100
10131 5 B59
43367 2715
sectfQIIQD fOQgO Chironomid larvae
1780 1
1000 100
1528308 859
673586 2715
Mean number of organismssample 2464 Standard deviation 874
M ean num b er f 20 organlsms 2115590 Standard deviation 750305
H= 151 SD= 046 SR= 1 07 J= 041
A-46
STATION 18 Date 14 September 1984 Depth 21 III
Salinity (bottom) 01 ppt Temperature (botto) 182 C No of samples 10
Frequency DenSity (nom 2 ) Total occurrence ---------------- shy
Taxa nUlDber (i) X SD
Nemertea 1 100 859 271 5 Nematoda 186 1000 159700 44925 Turbellaria 16 400 13738 20717 ~~Dth~~ limni~Ql Oligochaeta
13 55
700 900
11162 47223
9096 30085
~Q~ei~Yl nil~Qi~ 17 900 14596 7069 bimDg~lbg[ Spa b 500 5152 6003 ~Q[Q2niY ~lgQi~ Harpacti coi da
562 2
1000 200
482533 171 7
136766 3620
sectpoundQttQ~Q~ ~n~ni 791 1000 679153 324290
Mean number of organismssample 1649 Standard deviation 447
I 211ean nUll ber 0 f organIsms I 1415831 Standard deviation 384136
H= 179 SD= 064 SR= 084 J= 054
A-47
STATION 58 Date 14 September 1984 Depth 58 III
Salinity (bottom) 01 ppt Temperature (bottom) 191 C No of sampl es 10
-------------------------------------------~------------------------------Frequency Density (nom 2 )
Total occurrence Taxa number eX) X SD
Nemertea 1 100 859 2715 Nematoda 55 1000 47223 18658 Turbellaria 10 500 8586 11448
1 100 859 2715 Oligochaeta 41 1000 35203 17850 ~~iQQ~~gll iu1g[m~i ~Q[Q~Yl nilD bimnQ~Y~h[ Spa ~Q[Q~hiYm lmgui sectpoundQilg1D poundU2D Chironomid larvae
4 10
2 277
23 4
100 500 200
1000 700 300
3434 8586 171 7
237832 19748 3434
10861 11448 3620
50561 21051 6003
Mean number of organismssample 428 Standard deviation 51
M b f 2ean num er 0 organIsms III 367481 Standard deviation 43743
H= 179 SD= 055 SR= 114 J= 052
A-48
I I
STATION SS Date 14 September 1984 Depth 21 II
Salinity (bottom) 01 ppt Temperature (bottom) 190 C No of samples 10
--------------------------------------------------------------------~-----
Frequency Density (no1I2) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 102 1000 87577 39200 Oligochaeta 34 700 29192 31142 ~iQ2Y~y1 int(mgi~ bithQgl~en~ Yi(gDsect ~Q(~i~Y m~DilgDsecti~ bimDQamp~1h(sect sp ~2(QQhiY slmQD 2poundQiiQlsD ~sD~g~nsecti Chironomid larvae
36 18 16 17
100 16
3
1000 600 800 700
1000 800 300
30910 15455 13738 14596 85860 13738 2576
157BO 20953 10078 14621 32126 10861 4147
Mean number of organismssample 342 Standard deviation 97
2Mean nUllber 0 f organlsms m 293641 Standard deviation 83617
H= 262 SD= 079 SR= 095 J= 083
A-49
Appendix B--Sediment particle size and organic content of the Cathlamet Bay
benthic invertebrate sites 13 March through 14 September
1984
iii
1
Station 18a 48 54 57
Survey 1 1 1 1
Month March March March March
Day 13 13 13 13
Particle size (mm) Phib Percent by weight
gt 40 -2 000 000 000
20- 40 -1 000 000 000
10- 20 0 000 009 000
05- 10 1 018 1079 032
025- 050 2 545 7583 2468
0125- 025 3 8731 1225 6783
00625-0125 4 491 037 657
lt0625 (5-12) 216 067 060
Organic Content 160 116 128
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
b Phi= -log2(sediment particle diameter in mm)
B-1
Station 18a 48 54 57
Survey 2 2 2 2
Month April April April April
Day 5 5 5 5
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 003 093 000
05shy 10 1 005 31 75 023
025shy 050 2 087 5904 2368
0125- 025 3 6316 750 7155
00625-0125 4 3056 026 427
lt0625 (5-12) 533 052 028
Organic Content 081 077 065
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-2
Station 45 55 58
Survey 3 3 3 3
Month April April April April
Day 18 18 18 18
Particle size (mm)
gt 40
Phi
-2
Percent by weight
000 000 000
20shy 40 -1 000 000 000
10shy 20 0 005 009 004
05shy 10 1 010 027 013
025shy 050 2 015 095 225
0125- 025 3 097 536 6111
00625-0125 4 453 2821 2205
lt0625 (5-12) 9420 6511 1442
Organic Content 31 42 14
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-3
Station 18a 45 55 58
Survey 4 4 4 4
Month May May May May
Day 4 4 4 4
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 021
05shy 10 1 000 065 063
025shy 050 2 012 370 230
0125- 025 3 091 4099 4696
00625-0125 4 322 3650 3052
lt0625 (5-12) 9575 1810 1939
Organic Content 330 180 160
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-4
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
5
May
17
000
000
005
016
217
5862
2729
1170
100
45 55 58
5 5 5
May May May
17 17 17
Percent by weight
000 000
000 000
005 008
113 031
325 274
1903 5613
2784 2401
4870 1672
240 110
000
000
000
010
020
079
397
9494
390
B-5
Station 18al 45 55 58
Survey 6 6 6 6
Month June June June June
Day 6 6 6 6
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 020
05shy 10 1 005 051 027
025shy 050 2 005 301 1 79
0125- 025 3 074 3189 5404
00625-0125 4 599 4118 2885
lt0625 (5-12) 9317 2332 1485
Organic Content 340 240 150
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-6
Station
Survey
Month
Day
Particle size Cmm) Phi
gt 40 -2
20shy 40 -1
10shy 20 a
05shy 10 1
025shy 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
7
June
18
000
000
005
029
138
3917
4143
1768
180
45
7
June
18
55 58
7 7
June June
18 18
Percent by weight
000
000
000
010
020
080
427
9464
310
000 000
000 000
000 007
011 022
057 190
957 5286
3023 2642
5957 1853
1 70 110
B-7
Station 18al 45 55 58
Survey 8 8 8 8
Month July July July July
Day 2 2 2 2
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 006 002 006
05shy 10 1 006 0l3 023
025shy 050 2 017 088 171
0125- 025 3 074 2712 5365
00625-0125 4 552 3892 3081
lt0625 (5-12) 9345 3294 l354
Organic Content 410 210 160
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-8
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
9
July
17
000
000
003
013
130
4294
4434
1127
130
45
9
July
17
Percent
000
000
000
006
012
051
046
9885
290
55
9
July
17
by weight
000
000
019
048
091
628
3616
5597
030
58
9
July
17
000
000
004
022
158
5017
3148
1650
140
B-9
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18al
10
August
1
45
10
August
1
55
10
August
1
58
10
August
1
Percent by weight
000 000
000 004
001 004
009 018
018 088
098 306
049 2510
9824 7070
000
005
045
763
3604
4495
932
156
100 190 060
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-10
Station 18 45 55 58
Survey 11 11 11 11
Month August August August August
Day 17 17 17 17
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000 000
20- 40 -1 005 000 000 000
10- 20 0 021 003 000 210
05- 10 1 064 009 000 159
025- 050 2 226 027 045 2656
0125- 025 3 3259 131 712 3719
00625-0125 4 4327 195 1737 1159
lt0625 (5-12) 2098 9635 7506 2097
Organic Content 210 300 160 100
Ii I
B-11
Station
Survey
Month
Day
Particle size (mm) Phi
gt40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
12
August
29
000
000
012
046
186
3465
4498
17 93
241
45
12
August
29
55 58
12 12
August August
29 29
Percent by weight
000
000
002
009
026
118
189
9656
540
000 000
000 000
003 011
011 028
055 1013
859 5033
1596 1827
7476 2089
1 70 120
B-12
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
_-------------------- shy
B-13
Simpson E H
1949 Measurement of diversity Nature 163688
11
APPENDIX A--Descriptive summary of benthic invertebrate data collected in
Cathlamet Bay Oregon during March through September 1984
STATION 18 Date 13 March 1984 Depth 46 m Salinity (bottom) 11 ppt Temperature (bottom) 67 C No of samples 15
Frequency Density (nom 2 ) Total occurrence
Taxa number (7) X SD
Nemertea 2 67 1145 4434 Nematoda 134 1000 76702 33169 Turbellaria 22 667 12593 15854 ~~n~b~~ imnpoundQ 31 Oligochaeta 486
933 17744 1468 1 100() 278186 138779
~QtQif~12 mnil~nsectisect 24 Ostracoda 39
933 13738 8462 800 22324 17715
~Q[QQbiYm ~lmQni~ 74 867 42358 38B70 EQntQIH~i2 Qyi 1 EQri gnQQn 1 Harpacticoida 7
67 572 2217 67 572 221 7
333 4007 7159 Insecta 2 67 1145 4434 Chironomid larvae 20 667 1144 B 10090 Collembola 95 867 54378 82588 Hydracarina 1 67 572 221 7
Mean number of organismssample 626 Standard deviation 19 1
M ean num b er 0 f 2organIsms III 537484 Standard deviation 163579
H= 237 so= 069 SR= 1 42 J= 061
A-l
STATION 48 Date 13 March 1984 Depth 107 m Salinity (bottom) 05 ppt Temperature (bottom) bB C No of sampl es 15
Frequency Densi ty (nom 2 ) Total occurrence
Taxa number (7) X SD
Nemertea 31 6b7 17744 1849 1 Nematoda 38 667 21751 22685 Oligochaeta 4 133 2290 6859 ~QQpound12 2nil~nsectisect 31 Ostracoda 1
667 17744 29648 67 572 221 7
~Q9~~[~ spp 1 ~Q[Q2l ~~lQnisect 1 ~Q2sectiQisect sectisect 4 Harpacticoida 1
67 572 2217 67 572 221 7
200 2290 5097 67 572 221 7
Insecta 2 133 1145 3021 Diptera adult 1 67 572 2217 Collembola 24 467 13738 30923
Mean number of organismssample 93 Standard deviation 59
Mean number of organismsm2 795b4 Standard deviation 50740
H= 255 SD= 079 SR= 1 55 J= 071
A-2
STATION 54 Date 14 March 1984 Depth 177 m Salinity (bottom) 00 ppt Temperature (bottom) 66 C No of samples 15
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nemertea 47 1000 26903 14096 Nematoda 7 267 4007 9102 Turbellaria 9 333 5152 1114B Oligochaeta 11 333 6296 10989 Gastropoda 1 67 572 2217 ~Q(Qi~Yl mnil~n2i~ Ostracoda
199 3
1000 200
11390B 171 7
97165 3555
gQ[Qehiy sectlmQnisect Harpacticoida
3 1
200 67
171 7 572
3555 221 7
Heleidae larvae 29 867 16600 10989 Chironomid larvae 2 133 1145 3021 Collembola 2 67 1145 4434
Mean number of organismssample 209 Standard deviation 103
2Mean number 0 f organIsms m 179734 Standard deviation 88247
H = 1 86 SD= 056 SR= 1 33 J= 052
A-3
STATION 57 Date 13 March 1984 Depth 91 m Salinity (bottom) 00 ppt Temperature (bottom) 63 C No of sampl es 15
Frequency Densi ty (no 81 2) Total occurrence
Taxa number (X) X SD
Nemertea 27 667 15455 13459 Nematoda 8 400 4579 6381 Turbellaria 4 200 2290 5097 Oligochaeta 8 400 4579 6381 ~g[gipound~l mnilui Ostracoda
1 1
67 67
572 572
2217 2217
~Qgml[a spp 1 67 572 2217 ~Q[Qeni~m lmQnisect Harpacticoida
2 1
133 67
1145 572
3021 221 7
Insecta 3 67 171 7 b651 Chironomid larvae 1 b7 572 221 7 Collembola 37 400 21179 65700 Hydracarina 1 67 572 221 7
Mean number of organismssample 63 Standard deviation 82
Mean number of organismsm2 54378 Standard deviation 70029
H= 253 SD= 075 SR= 1 83 J= 068
A-4
STATION 18 Date 5 April 1984 Depth 30 II
Salinity (bottoll) 00 ppt Temperature (bottom) 90 C No of samples 15
Frequency Densi ty (no1I 2) Total occurrence
Taxa number (i ) If S D
Nemertea 11 bOO 6296 6042 Nematomorpha 2 133 1145 3021 Nuatoda 119 1000 6811 6 50947 Turbellaria 20 600 11448 13640 ~~~nin~sect liIDni~Q12 Oligochaeta
33 481
1000 1000
18889 275324
10364 142326
~Q~Qi~Yl m2nil~ni2 23 600 13165 1371 7 Ostracoda 33 933 18889 10861 gQ(QQrriYID sect2mQnisectHarpacti coi da
38 7
933 133
21751 4007
13329 13328
Chironomid larvae 16 667 9158 8868 ColI embola 1 67 572 2217
Mean number of organismssample 523 Standard deviation 227
M b f 2ean num er 0 organIsms m 448762 Standard deviation 194508
H= 202 SD= 059 SR= 114 J= 0S6
A-5
STATION 45 Date 18 April 1984 Depth 64 III
Salinity (bottom) 00 ppt Temperature (bottom) 95 C No of samples 15
Total Frequency occurrence
Density (noI 2 )
Taxa number (X) X SD
Nematoda 171 1000 97890 92277 tyg~ sp Turbellaria
1 29
67 600
572 16600
221 7 23506
H~nng~ imDi~g tQQsectQl fg~ig Oligochaeta ~Q[Qi~Y2 m2niD~i Ostracodamiddot
9 41
367 42
100
400 1000 1000 800
1000
5152 23469
210071 24041 57240
781 5 13563
100542 19254 43134
~Q[Qeniym amQnisectHarpacticoida Heleidae larvae
37 2049
1
933 1000
67
21179 117284B
572
189B5 616612
221 7 Chironomid larvae 3 200 171 7 3555 Collembola 1 67 572 221 7 Insect parts 1 67 572 221 7
Mean number of organismssample 1901 Standard deviation 864
b f 2nean num er 0 organIsms m 1632485 Standard deviation 741931
H = 1 52 SD= 046 SR= 1 13 J= 040
A-6
STATION 18 Date 18 April 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom) No of samples 15
Frequency Density (nom2) Total occurrence
Taxa nueber (X) x s D
Nemertea 13 533 7441 9663 Nematomorpha 3 200 171 7 3555 Nematoda 195 1000 111618 63675 Turbell ari a 9 467 5152 6326 ~~ni~~ i~ni~Ql~ 30 867 17172 129B1 Oligochaeta 580 1000 331992 108880 ~QC~i~Ml~ m~nil~n~isectOstracoda
28 18
1000 667
16027 10303
11179 10364
~Q[Q~~iYm sect~Qni2 sect~ci~ gniQQnHarpacticoida
105 1
17
1000 67
400
60102 572
9731
25553 2217
19970 Chironollid larvae 16 667 9158 8B6B
Hean number of organismssample 677 Standard deviation 199
M ean num b I 2er 0 f organIsms AI 580986 Standard deviation 171095
w = 202 SD= 062 SR= 1 10 J= 056
95 C
A-7
STATION 58 Date 18 April 1984 Depth 67 m Salinity (bottom) 00 ppt Temperature (botto) No of samples 15
Frequency Density (nom2) Total occurrence
Taxa number (~) X SD
Nemertea 62 933 35489 26338 Nematoda 224 1000 128218 49903 Turbellaria 9 600 5152 4354 ~nt~sect imni~Q Oligochaeta
1 79
67 1000
572 45220
2217 23506
bnQgYRhY~ Yi~~nE ~Q(~i~Y nil~ni Ostracoda
2 10 19
67 533 600
1145 5724
10876
4434 6214
10989 ~Q[QeniY sectQOiHarpacticoida
30 2
B67 133
17172 1145
12142 3021
Heleidae larvae 6 333 3434 5430 Chironomid larvae 9 400 5152 7B1 5 Chironomid pupae 2 133 1145 3021
Mean number of organismssample 303 Standard deviation 94
I 11 ean num ber 0 f organlsms 2 260442 Standard deviation 81043
H= 233 SO= 070 SR= 1 36 J= 063
97 C
A-B
Frequency Density (nolm 2) Total occurrence -----------------
Taxa number (7) X SD
Nemertea 16 467 9158 10989 Nematoda 266 1000 152258 54541 Turbellaria 23 600 13165 15518 ~l~nH ~Q~iQH 2 133 1145 3021 Oligochaeta 181 1000 103604 56532 bi~hQg~Qn~~ ~it~l~ ~QtQifg mli~lsectisectOstracoda
3 59 15
200 1000 733
1717 33772 8586
3555 23054
7256 ~Q[QQhiY HmQtlsect ~Q[QehiYm sect21tlfQ[lg EQlQQQt~i hQ~i
466 3 1
1000 200 67
266738 171 7 572
75094 3555 221 7
Harpacticoida 30 400 17172 40402 Chironomid larvae 10 533 5724 6214
Mean number of organismssa_pIe 717 Standard deviation 143
I 2Mean number 0 f organlsms m 615330 Standard deviation 122532
H= 226 SO= 072 SR= 119 J= 061
STATION 55 Date 18 April 1984 Depth 30 1ft
Salinity (bottom) 00 ppt Temperature (bottom) 93 C No of SaIIples 15
A-9
STATION 45 Date 4 Hay 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 103 C No of samples 10
Frequency Density (noI2) Total occurrence ---------------- shy
Taxa number (Xl X SD
Neutoda 269 1000 230963 167296 Turbellaria 1 100 859 2715 ~u~yuti Q~iQ ~Ub imni~Q
1 2
100 100
859 171 7
2715 5430
j2~Qn flec Oligochaeta
28 169
BOO 1000
24041 145103
19326 74351
~igeYk~ll iulCIDai ~Q(Qi~Y uini Ostracoda
32 4 5
aoo 400
400
27475 3434 4293
22463 4434 6071
biQQ~~tbt sp ~e(QQbYm mQoi sectampQeD ~nQDisect Chironomid larvae
25 2
578 2
900 200
1000 200
21465 1717
496271 171 7
15279 3620
293820 3620
Mean number of organismssample 111 8 Standard deviation 522
11 b f I 2ean num er 0 organIsms m 95991 5 Standard deviation 447842
H= 193 SD= 065 SR= 118 J= 052
A-10
STATION 18 Date 4 Hay 1984 Depth 34 II
Salinity (bottom) 00 ppt Temperature (bottom) 104 C No of saMples 10
Frequency Density (noI 2 ) occurrence ----------------shy
Taxa (X) X SD
Nemertea 10 600 8SB6 10709 Nuatoda 153 1000 131366 47899 Turbellaria 8 600 6869 6773 ~n1b limnpoundQl Oligochaeta
11 147
700 1000
middot9445 126214
9449 6231 7
~i~g~kXl in1(m~i ~g(2iY OiOi Ostracoda
86 4 1
900 300 100
73840 3434 859
61543 6003 2715
bimoQpoundx1b( sp ~2(QQbiYm mgoiDi ptera adult
3 57
3
300 900 300
2576 48940
2576
4147 21815 4147
Chironomid larvae 4 300 3434 6003 Chironomid pupae 1 100 859 2715
Hean nUMber of orQanismssample 489 Standard deviation 160
b f 2nean nUll er 0 organIsms II 418997 Standard deviation 137721
H= 243 SD= 076 SR= 1 34 J= 066
A-l1
STATION 5B Date 4 Hay 1984 Depth 61 bull Salinity (botto~) 00 ppt Temperature (bottom) 110 C No of suples 10
Frequency Density (nom 2) Total occurrence ---------------- shy
Taxa number (X) X SD
Neertn 41 1000 35203 21206 Nematoda 211 1000 181165 53305 Turbellaria 4 200 3434 7240 Oligochaeta 89 1000 76415 32240 ~i~2~~~11~ iU1(~i~bi1begygny YitQ ~e(biYl ~OiDi OstracDda
4 3
20 1
400 200 BOO 100
3434 2576
17172 859
4434 5795
19829 2715
biue~1bt~ sp ~2(egniY Imeoi sectg11g1O OdD Helei dae larvae
5 32
1 1
400 900 100 100
4293 27475
859 859
6071 18010 2715 2715
Chironomid larvae 7 400 6010 9096
Mean number of organismssample 419 Standard deviation 93
b f 2ean nUll er 0 organIsms m 359753 Standard deviation 79875
H= 221 SD= 068 SR= 138 J= 060
A-12
Frequency Density (nolm 2) occurrence -----------------
Taxa (X) X SD
Nemertea 23 900 1974S 15171 Neutollorpha 1 100 859 271 5 Nellatoda 269 1000 230963 69923 Turbellaria 10 600 8586 991 4 ~~xYnki Q~ampiQ 4 300 3434 6003 ~nb limnipoundQl Oligochaeta
1 79
100 1000
859 67829
2715 40363
~i~Q~kXl io[~i biDe9XQDX ~i[~OBi valvi a
11 3 1
800 300 100
9445 2576 859
6335 4147 271 5
~Q[~poundY mnil~n bimoQampXD[ sp ~Q[QabiY lQO Harpacticoida
18 2
159 1
700 200
1000 100
15455 171 7
135659 859
13904 3620
54272 2715
Chironomid larvae 2 200 171 7 3620 Trichoptera larvae 1 100 859 2715
STATION 55 Date 4 May 1984 Depth 21 m Salinity (bottom) 00 ppt Temperature (bottom) 107 C No of suples 10
Mean number of organismssamples 594 Standard deviation 147
Mean number of organismsm2 501422 Standard deviation 126525
H= 219 aD= 069 SR= 1 63 J= 055
A-13
STATION 45 Date 17 May 1984 Depth 61 m Sal i ni ty (bottom) 01 ppt Temperature (bottom) 121 C No of sampl es 10
Frequency Total occurrence
Taxa nUlllber (7)
NelDertea 1 100 859 2715 Nematoda 163 1000 139952 127996 Polychaeta 1 100 859 2715 ~~~n~h~ imni~Qs Hobsonia florida
2 6
200 600
171 7 5152
3620 4434
Oligochaeta 329 1000 282479 13291 8 ~~lQQYsectk~~12 in~~rmQi 57 900 48940 33142 ~Qr~ipound~2 ffi2niDi 6 500 5152 6003 Ostracoda 5 200 4293 10898 bimDg~yth( SPa 13 600 11162 12176 ~Q(Qebi~m sectQDisect Harpacticaida
2 2
200 100
1717 1717
3620 5430
2poundQttQD poundDQDsectisectDiptera adult
296 1
1000 100
254146 859
172633 271 5
Mean number of organismssample 884 Standard deviation 326
b f I 2nean num er 0 organlss m 759002 Standard deviation 280131
H= 209 SD= 071 SR= 1 33 J= 055
A-14
STATION 18 Date 17 May 1984 Depth 30 m Salinity (bottom) 00 ppt Temperature (bottom) 122 C No of samples 12
Frequency Density (nom2) Total occurrence -----------------
Taxa number (X) X SD
Nematoda 50 833 35775 22815 ~ntb limnipoundQl 3 Oligochaeta 97
250 833
2147 69404
3883 48495
~igQ~~k~ intr~ 27 ~QrQipoundY mnin~i~ 5
667 333
19319 3S7S
19068 5740
Ostracoda 1 83 716 2479 bimnQpound~nr sp 5 ~Q(Q~bY ~mQni S4 ~Q(Q~niY ~QinipoundQ(n 3
333 833 250
3578 60102
2147
5740 43780 3883
fgnQ2Q(i bQ~i 1 sectpoundQtgO poundnQn~i 2 Chironomid larvae 4
83 167 250
716 1431 2862
2479 3342 5592
Mean number of organismssample 235 Standard deviation 116
nean nURl b er 0 f organlslls II 2 201771 Standard devi ati on 99221
H= 236 SD= 075 SR= 1 35 J= 066
A-15
STATION 58 Date 17 May 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) 123 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nemertea 2 100 171 7 5430 Nematoda 75 1000 64395 34404 ~~2Qih~a limQi~Q 2 200 171 7 3620 Oligochaeta 60 1000 51516 33376 ~~igQY~~~12 iQ~[~~gi 2 200 171 7 3620 bitQQ9~Bh~sect Yr~Qsect 3 200 2576 579~
gQ[Qi~Yl ID2Dil~nsectisect Ostracoda
6 6
500 400
5152 5152
6003 8295
binQ~~nr[ sp gg[QQOYm mQQsect sect~QttQn 5n2Q~nsectia Chironomid larvae
2 34
1 1
200 1000
100 100
171 7 29192
859 859
3620 12927 271 5 2715
Mean number of organismssample 194 Standard deviation
2Mean nurn ber 0 f organIsms fA 166568 Standard deviation 56259
H= 225 SD= 072 SR= 1 45 J= 063
A-16
66
STATION 55 Date 17 May 1984 Depth 24 II
Salinity (bottom) 00 ppt Telllperature (bottom) 126 C No of samples 10
Total Frequency occurrence
Taxa nUllber (X) X SD --------------------------------------------------------------~-----------
Nematollorpha 2 200 171 7 3620 Nematoda 63 1000 54092 35297 Oligochaeta 94 1000 80708 44004 ~~iQQY~k~~l iQt~(m~Qi bitnQg~Qh~~ Yi[~Q gQ[QipoundY~ mni~Q~i Ostracoda
10 9 4 2
600 800 300 100
8586 7727 3434 171 7
9050 4874 6003 5430
bimnQ~~ln~[e sp ~Q(QQbiYm mQD ~Q[QQbiYm 2inipoundQ[n~ Chironomid larvae
6 142
3 1
600 1000 200 100
5152 121921
2576 859
4434 50682 5795 2715
Mean number of organismssample 336 Standard deviation 62
2Mean num ber 0 f organisms m 288490 Standard deviation 53421
H= 214 SD= 071 SR= 119 J= 062
A-17
STATION 45 Date 1 June 1984 Depth 61 m Salinity (bottom) 01 ppt Temperature (bottom) 139 C No of samples 10
Total Frequency occurrence
Density (no2)
Taxa nUllber (1) X SD
Nematoda 174 900 149396 132347 Turbellaria 5 200 4293 10898 ~~~QiQ~sect tmQtpoundQ~ ~QQsectQ flQi~sect Oligochaeta ~~iQQysecttygl~ iQl~rm~~i2 ~Q[Qi~~l~ ~~DilgDsectisect Ostracoda
5 20
190 103
12 5
400 900
1000 900
60 (I 400
4293 17172
163134 88436 10303 4293
6071 8095
92563 51524 11304 6071
bimnQpoundytng[ sp ~gQmYsectisect IDg[pound~Qisect ~Q[QQhi~m sectlmQDisect sectpoundQtiQlsectQ pound~Qgsectisect ChironQmid larvae
33 1
10 375
2
900 100 700
1000 200
28334 859
8586 321975
171 7
17196 2715 7010
179201 3620
Mean number of organismssample 935 Standard deviation 254
nurn b 0 f 2lean er organlsms m 802791 Standard deviation 218423
H= 239 SD= 075 SR= 1 22 J= 065
A-18
STATION 18 Date 1 June 1984 Depth 30 AI
Salinity (bottom) 00 ppt Temperature (bottom) 134 C No of samples 11
Frequency Density (no 1m2)
Taxa Total number
occurrence (X)
---------------- shyX SD
Turbellaria 14 636 10928 1157 7 ~~~Qltlg~ ilipoundQ~ Oligochaeta
10 178
727 1000
7805 138937
601 6 67913
~~iQQy~tY~l~ ill~[m~Qi~ 122 636 95227 93619 ~Q[Qipound~ l~i~lsectisect Ostracoda
7 1
455 9 1
5464 78 1
6946 2589
billQylhg[ Spa 16 818 12489 10420 GQ[QQQil HQi~ 139 1000 108496 70934 gQ[Qebi secteiifQ[~ sectQiiQi2 ~Q~sectisect Diptera pupae
1 2 1
9 1 182
11 1
781 1561 781
2589 3473 2589
Chironomid larvae 2 182 1561 3473
Mean number of organismssample 714 Standard deviation 284
nean num b er 0 f organlsms m 2 612728 Standard deviation 244249
H= 232 SD= 075 SR= 1 25 J= 063
A-19
STATION 58 Date 1 June 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 138 C No of samples 10
Frequency Density (noI 2 ) Total occurrence
Taxa number (X) X SD
Nematoda 173 1000 148538 47383 Turbellaria 3 300 2576 4147 Oligochaeta 53 1000 45506 32139 ~giQgY2k~g~ ini~[m~Qi~ bQg91YehY2 Yi[~nsect ~Qr~i~Yl m~nl~n~i
26 1
10
600 100 500
22324 859
8586
3391 2 2715
13424 bimnQpound~Q~[ sp ~Q9~m[Y poundgnitYpoundQlysect ~QtQehiYm ~lQni
4 1
46
200 100
1000
3434 859
39496
8295 2715
22243 Chironomid larvae 1 100 859 271 5
Mean number of organismssample 318 standard deviation 103
M b f I 2ean num er 0 organlsms III 273035 Standard deviation 88842
H = 1 99 SD= 065 SR= 1 08 J= 060
A-20
STATION 55 Date 1 June 1984 Depth 27 m Salinity (bottom) 00 ppt Temp era t u r e (b 0 t tom) 140 C No of samples 10
Frequency Density (nom 2 ) Total occurrence
Taxa nueber (X) X SD
Nematoda 157 1000 134800 69524 Turbellaria 9 400 7727 13696 tlHl~lk ~2~~iQH 1 100 859 2715 Oligochaeta 49 1000 42071 32745 ~~iQQysect~gl~ S[l9sect bHbQghQb~~ Yirl~
10 1
400 100
8586 859
12799 2715
tQ[Qpoundls l2lilUsect bilQHSbg[ sp ~QrQQbil nllQisectHarpacticoida
4 7
134 1
400 500
1000 100
3434 6010
115052 859
4434 7069
44742 271 5
sectpoundQUQlls poundsQgn~sect Chironomid larvae
1 1
100 100
859 859
271 5 2715
Hydracarina 1 100 859 2715
Hean number of organismssample 376 Standard deviation 132
M b f 2ean num er 0 organIsms m 322834 Standard deviation 113127
H= 202 SD= 068 SR= 1 40 J= 055
A-21
STATION 45 Date 18 June 1984 Depth 67 m Salinity (bottom) 01 ppt Temperature (bottom) 149 C No of samples 10
Frequency Density (nom2)
Taxa Total nUllber
occurrence ex) i SD
Nematoda 109 1000 93587 3891 7 Turbell ari a 3 200 2576 5795 ~g~tbg limoipoundQl Q~Qni2 fQ(i~2 Oligochaeta ~gigQ~~Y inl[ggi ~Q[QiSY2 moilo Ostracoda
3 2
194 44
7 3
200 200
1000 1000 200 200
2576 171 7
16656B 37778 6010 2576
5795 3620
118364 36020 12831 5795
bimoQampl~n~[2 sp ~Q[QQbiYm lmgoi Harpacticoida sectpoundQQ1202 pound2022Osect Chironomid larvae
68 1 1
113 2
900 100 100
1000 200
58385 859 859
97022 171 7
97627 2715 2715
73976 3620
Mean number of organismssa_pie 550 Standard deviation 371
Mean nUll ber 0 f organIsms 2II 472230 Standard deviation 318519
H= 242 SD= 077 SR= 1 32 Ja 065
A-22
STATION 18 Date 18 June 1984 Depth 34 m Salinity (bottom) 00 ppt Temperature (bottom) 155 C No of samples 10
Frequency Density (nom 2) Total occurrence ----------------shy
Taxa nUlber (Z) X SD
Neutoda 291 1000 249853 138826 Turbellaria 1 100 859 2715 ~~n~~nki~ sectQ~~iQ~2 ~g~ntbg2 limni~Q9 Oligochaeta
1 3
123
100 300
1000
859 2576
105608
271 5 4147
48240 ~~igQY~~~~9 int~(mgii ~Q[~i~~~ mini~ni bimnQ~ylbg(~ Spa
67 6 5
1000 500 400
57526 5152 4293
40485 6003 6071
~Q(QebiYm ~imQnisect Harpacticoida
80 2
1000 200
68688 171 7
41276 3620
sect~QttQini ~2nig~n~i Chironomid larvae
2 4
200 300
171 7 3434
3620 6003
Mean number of organismssample 585 Standard deviation 194
I 2Mean urn b er 0 f organIsms m 502281 Standard deviation 166943
H= 203 SD= 068 SR= 1 20 J= 057
A-23
STATI ON 58 Date 18 June 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (noI 2) Total occurrence
TaKa number (X) X SD
Nellertea 2 100 1717 5430 Nematoda 160 1000 137376 6361 1 Turbellaria 4 400 3434 4434 Oligochaeta 36 1000 3091 0 14705 ~iQQYik~ Q1rQ 4 300 3434 6003 bitnQgl~ebysect YrDsect ~Q[QiY~ ~~nni biQQpoundY1h[ sp ~Q[Qeng ~ilQD Chironomid larvae
3 1 3
61 1
300 100 300
1000 100
2576 859
2576 52375
859
4147 2715 4147
1428 1 2715
Chironollid pupae 1 100 859 271 5
Mean number of organismssample 276 standard deviation 72
nean nurn b er 0 f organIsms I 2 236974 Standard deviation 61410
H = 1 78 SD= 060 SR= 1 23 J= 051
A-24
STATION 55 Date 18 June 1984 Depth 18 m Salinity (bottom)1 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (no 1m2) occurrence
Taxa (X) X SD
Nematoda 160 1000 137376 43967 Turbellaria 1 100 859 271 5 Oligochaeta 61 1000 52375 31985 ~~iQQY~kY~~ int~[mQi~ ~Q[Qipound~l~ m~nini~ biIDnQ~Ylb[s sp
3 3 3
300 300 300
2576 2576 2576
4147 4147 4147
~Q[Q~bi~ ~slIDQni~ Chironomid larvae
85 6
1000 600
72981 5152
34165 4434
Mean number of organismssample 322 Standard deviation 75
2Mean number 0 f organIsms m 276469 Standard deviation 64099
H= 178 5D= 065 SR= 0B4 J= 059
A-25
Frequency Density (no2) occurrence -----------------
Taxa (7) X SD
Nematoda 104 1000 89294 47409 Turbell ar i a 1 100 859 2715 ~~~nQ~sect imni~Q~ tjQQsectQlis flQig~ Oligochaeta
2 1
297
100 100
1000
171 7 859
255004
5430 271 5
146273 ~~i~QYsect~Y~lls ilr2is gQrQi~y~ IDDilDia
24 4
600 300
20606 3434
27212 6003
Ostracoda 2 200 171 7 3620 biDQSy~b~C~ sp M~QYsectisect m~r~~Qi ~QrQeniy QD Harpacticoida
157 1 1 1
900 100 100 100
134800 859 859 859
73197 2715 2715 2715
sectpoundQttQDs SsDQD 113 900 97022 61656
STATION 45 Date 2 July 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) No of samples 10
172 C
Mean number of organismssample 708 Standard deviation 339
M ean num b er f 20 organisms 607889 Standard deviation 290B22
H= 216 SD= 073 SR= 1 27 J= 058
1-26
STATION 18 Date 2 July 1984 Depth 24 WI
Sal inity (bottom) 00 ppt Temperature (bottom) 172 C No of samples 10
--------------------------------~-----------------------------------------Frequency Density (nom2)
Total occurrence Taxa number (7) X SD
Nematoda 202 1000 173437 113532 ~~~nih~sect mnpoundQ~ Oligochleta
4 102
400 1000
3434 87577
4434 54873
~~igQYsect~Y~12 inl~rmgi2 ~Q[~poundYl~ m~ni~nsectisect bimnQpoundylh~[~ Spa
115 4
15
900 300 900
98739 3434
12879
100720 6003 9274
~Q[QQniY~ sect~QDi~ 55 900 47223 40525 Harpacticoida 1 100 859 2715 sectpoundQiiQlD SDg~DEisect Chironomid larvae
2 6
200 400
1717 5152
3620 7240
Hymenoptera 1 100 859 2715 Hydracarina 1 100 859 2715
Mean number of organismssample 508 Standard deviation 253
2Mean num ber 0 f organIsms m 436169 Standard deviation 217580
H= 225 SD= 074 SR= 1 22 J= 063
A-27
STATION 58 Date 2 July 1984 Depth 58 1
Salinity (bottom) 00 ppt Temperature (bottom) IBO C No of samples 10
Frequency Density (no2) Total occurrence
Taxa number ltX) i SD
Nematoda 151 1000 129649 42729 Turbellaria 1 100 859 2715 01 i gochaeta 41 1000 35203 22698 ~~i~e~~~ int~~m~~ 3 200 2576 5795 btbQglYRhY~ Yir~n~ ~e~~ampy mni~niii bimQeamp~tb~ sp ~e~eQhiY ~mQni Chironomid larvae
1 4 2
68 1
100 300 200
1000 100
859 3434 171 7
58385 859
271 5 6003 3620
1557 1 2715
Mean number of organisassample 272 Standard deviation
I 2Mean num ber 0 f organIsms I 233539 Standard deviation 62546
H = 1 69 SD= 061 SR= 099 J= 053
A-28
73
STATION 55 Date 2 July 1984 Depth 15 III
Salinity (bottom) 00 ppt Temperature (bottom) 182 C No of samples 10
Frequency Density (nom2) occurrence
Taxa (X) X SD
Nematoda 184 1()00 157982 5264B Turbellaria 1 100 859 271 5 Oligochaeta ~~iQQ~sect~Y~ll~ n~[~~Qi~ bitnggYQDYsect Yi[~nsect ~QrQipoundM2 m2ni~nsectisect bimnQpoundYn~[2 sp ~QrQQhiM Qni Harpacticoida
91 2 1 B 2
96 2
1000 200 100 500 200
1000 200
78133 171 7 859
6869 171 7
82426 1111
26058 3620 271 5 1890 3620shy
25980 3620
ChirDnomid larvae 5 400 4293 6071 Chironolllid pupae 1 100 859 2715
Mean number of organismssample 393 Standard deviation 53
2t1ean nUllber Df organlsms III 337430 Standard deviatiDn 45080
H= 187 SD= 067 SR= 116 J= 054
A-29
STATION 45 Date 17 Jul y 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (X) X SD
Nematoda 215 1000 184599 45837 ~~n~b~~ imDipoundQ Qe~Qni fllHi2
3 1
300 100
2576 859
4147 2715
Oligochaeta 305 1000 261873 147955 ~~iQQY~k~ in~rm~2i ~Qr~ipoundYl IDniln~i~ Ostracoda
17 1 2
500 100 200
14590 859
171 7
22554 2715 3620
bmnQpound~ihr sp ~QCQQhiY ~lQD~
176 1
1000 100
151114 859
57125 2715
Harpacticoida 4 300 3434 6003 sectQ~~Qn poundnQnai~ Chironomid larvae
91 5
1000 400
78133 4293
61310 6071
Mean number of organismssample 821 Standard deviation 275
M b f 2ean num er 0 organlsms m 70491 1 Standard deviation 236369
H= 215 SD= 073 SR= 114 J= 060
A-30
STATION 18 Date 17 Jul y 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom 203 C No of samples 10
Frequency Density (001 2 Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 339 1000 291065 119140 Turbellaria 3 200 2576 5795 ~~2~b~~ limnipoundQ12Oligochaeta
4 18S
300 1000
3434 161417
6003 89393
~~iQQy~~~ls in~(ID~Qi bim~Qampy~bg(2 Spa
34 16
800 700
29192 1373B
22967 15252
~g(gebi~m ~21mQni2 Harpacticoida
52 3
1000 200
44647 2576
25212 5795
2ampQ11Q1202 ampS02Qg~2i2 Chironomid larvae
18 10
700 700
15455 8586
13904 701 0
Mean number of organi$mssample 667 Standard deviation IBB
H ean nurn b er 1 20 f organIsms m 572686 Standard deviation 161750
H = 1 99 SD= 065 SR= 090 J= 060
A-31
STATION 58 Date 17 July 1984 Depth 55 AI
Salinity (bottom) 00 ppt Temperature (bottom) 197 C No of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nellatoda 173 1000 14853B 66390 Turbellaria 1 100 859 271 5 ~~~n~hu ini~QA Oligochaeta
1 46
100 1000
859 39496
2715 26293
~gipoundQy~~ygl2 in~rJg~i~ b1nQglYRnY~ Yi( Bivalvia
6 2 1
400 200 100
5152 1717 859
8295 3620 271 5
ei~ IDnH~n~i~ 2 200 171 7 3620 Ostracoda 1 100 959 271 5 biIDQHlh~( Spa ~Q(QRbim ~21Qnisect Diptera pupae
1 94
1
100 1000 100
859 80708
859
2715 35332 2715
Heleidae 1arvae 5 500 4293 4525 Chironomid larvae 1 100 859 2715
Mean number of organismssample 335 Standard deviatiDn 113
Mean number of organismsRI2 287631 Standard deviation 97413
H= 1 86 SO= 064 SR= 155 J= 049
A-32
STATION 55 Date 17 July 1984 Depth 18 m Sali nity (bottom) 00 ppt TeAlperature (bottom) 199 C No of samples 10
Frequency Density (nom2 ) occurrence
Taxa (X) x S D
Nematoda 61 1000 52375 33972 Turbellaria 1 100 859 2715 Oligochaeta 24 900 20606 11590 ~~i2QY~k~~1 iOi[2 bimDQ~xlb~r sp ~Q[QQhi~ sectgni~ Chironomid larvae
3 1
38 3
200 100
1000 300
2576 859
32627 2576
5795 2715
19326 4147
Mean number of organismssample 131 standard deviation 54
M b f 2ean num er 0 organIsms 112477 Standard deviation 46757
H= 184 SD= 066 SR= 085 J= 065
bull
A-33
STATION 45 Date 1 August 1984 Depth 58 m Sal i nity (bottoll) 03 ppt Temperature (bottom) 203 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa nUllber (X) X SD
Nematoda 145 1000 124417 52344 Turbellaria 1 100 859 2715 Mmth~sect iHpoundQ~ Q~~Qi ilQ[i9Oligochaeta
5 3
196
500 300
1000
4293 2576
168286
4525 4147
91064 ~igQYsect~~li int9i Ostracoda
2 3
100 300
171 7 2576
5430 4147
bimnQpoundtl sp ~Q[Q2hiY sectlQni~
240 6
1000 600
206064 5152
73526 4434
sectpoundQtQl poundngnai~Helei dae larvae
1862 1
1000 100
1598713 859
966134 271 ~
Mean number of organismssample 2464 Standard deviation 1156
211 ean num ber 0 f organIsms II 2115590 Standard deviation 992518
H= 124 SD= 041 SR= 089 J= 036
A-34
STATION 1S Date 1 August 1984 Depth 24 II
Salinity (bottom) 00 ppt Temperature (bottom) 198 C No of samp I es 10
Frequency Density (nom2) occurrence ---------------- shy
Taxa (X) X S D
Nuertea 1 100 859 2715 Nellatolllorpha 1 100 859 2715 Nematoda 248 1000 212933 108288 Turbellaria 4 400 3434 4434 ~untb~la Hli~g Oligochaeta
4 206
400 1000
3434 176872
4434 75309
~~igQYli~dli i[t~(gi~ ~QtQpound l binQ~ybt2 sp ~2l~bi Q[i ~2tlgtQ(ila tirisect sectpoundQtel poundl9lla Chironomid larvae
10 1
20 205
1 574
9
500 100 800
1000 100
1000 400
8586 859
17172 176013
859 492836
7727
10709 271 5
14021 48104
271 5 150531
13696
Mean number of organismssample 1284 Standard deviation 290
M b f I 2ean nurn er 0 organIsms III 1102442 Standard deviation 2488B5
H= 211 SD= 071 SR= 1 16 J= 057
A-35
STATION 58 Date 1 August 1984 Depth 55 m Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samp 1es 10
Frequency Densi ty _ ltnom2 ) Total occurrence
Taxa number (7) X SD
Nemertea 1 100 859 2715 Nematoda 22 900 18889 15036 Turbellaria 1 100 859 2715 Oligochaeta 19 700 16313 17385 biiQQgl~QhY~ YiCg~~ 2 200 171 7 3620 ~Q[~i~~l~ m2nil~n2i2 ~Q[QehiYm ~lmQni2
4 164
300 1000
3434 140810
6003 103048
Heleidae larvae 8 500 6869 8868
Mean number of organismssample 221 Standard deviation 111
I 2Mean num ber 0 f organIsms m 189751 Standard deviation 95391
H = L 37 SD= 043 SR= 090 J= 046
A-36
STATION 55 Date 1 August 1984 Depth 15 m Salinity (bottoll) 01 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (i ) X SD
Nemertea 1 100 859 2715 Neutoda 122 1000 104749 7394B Turbellaria 4 300 3434 6003 ~~~~~nt~ secte~poundQa~ Oligochaeta
1 118
100 1000
859 101315
2715 61223
~giQgY~k~~l iot~[m~Qi btbQg~2b~ Y[O ~grQipound~ ~nl~ni b~ngpound~tb~[ Spa
3 1 5 1
200 100 500 100
2576 859
4293 859
5795 2715 4525 2715
~Q[QebiYm ~mQoi sect~QttQ~ ~OQOi Heleidae larvae
42 2 2
800 200 100
36061 171 7 171 7
21341 3620 5430
Chironomid larvae 4 400 3434 4434
Mean number of organismssapIe 306 Standard deviation 169
M b f I 2ean nurn er 0 organIsms m 262732 Standard deviation 145101
H = 198 SD= 067 SR= 1 45 J= 054
A-37
~-- --------------~~-------------
STATION 45 Date 17 August 1984 Depth 61 1
Salinity (bottom) 10 ppt Temperature (bottom) 210 C No of samp 1es 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nematoda 240 1000 206064 130213 ~~h~sect limQ tjQ~~Hi~ fQ[i~~ Oligochaeta
31 2
245
400 100
1000
26617 1717
210357
75228 5430
121374 babgglYQbl~ Yi[~sect 1 100 859 2715 Ostracoda 1 100 859 271 5 biQ~xtb~[ Spa ~~Q~~isect ~[pound~Qisect ~Qgebi HQOi
333 2
143
1000 200
1000
28591 4 171 7
1227BO
106553 3620
106860 sectpoundQUg~ poundg~nsectisect 1738 1000 1492247 68441 7
Mean number of organismssample 2736 Standard deviation 944
M b f I 2ean num er 0 organlslls m 2349130 Standard deviation 810600
H= 172 SD= 056 SR= 079 J= 052
A-38
STATION 18 Date 17 August 1984 Depth 27 III
Sal i ni ty (botto) 01 ppt Temperature (bottom) 214 C No of samples 10
Frequency Density (nom 2 ) occurrence
Taxa (X) X SD
Nematoda 186 1000 159700 62468 ~tgt SPa 2 100 171 7 5430 Turbellaria 8 400 6869 8868 ~~ntbg2 imnipoundQ 12 700 10303 11304 Oligochaeta 283 1000 242984 90509 ~~iQQY~~Y~lls inlgtmggisBivalvia
4 1
400 100
3434 859
4434 271 5
~Qt~i~Y nilnsectisectbimnQpoundttbg[s SPa ~QtQQbi~ islmQDi2
1 17
286
100 900
1000
859 14596
245560
271 5 10747 83461
sectpoundetteln poundDsggnsectisect Chironomid larvae
526 4
1000 3Q0
451624 3434
179610 6003
Mean number of organismssapIe 1330 Standard deviation 162
Mean nurn ber I 20 f organIsms m 1141938 Standard deviation 139389
H= 214 SD= 073 SR= 1 06 J= 060
A-39
STATION 58 Date 17 August 1984 Depth 55 II
Salinity (bottom) 01 ppt Temperature (bottom) 220 C ND of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (7) x S D
Nematoda 68 1000 58385 27689 Turbellar i a 4 200 3434 8295 Oligochaeta 19 800 16313 13084 ~~i~Q~k~~l~ in~~[m~i bitUQ9Y2bYa Yi[~na Bivalvia
3 3 4
300 300 300
2576 2576 3434
4147 4147 6003
gQ[QipoundYl~ mnilDa 1 100 859 2715 binQpoundY~[ sp gQ[Q2UY a~mgnia sect~Qtgl~n ~n~~ni
2 338
6
100 1000 400
171 7 290207
5152
5430 56636 7240
Mean number of organismssample 448 Standard deviation 72
W b f 2lean num er 0 organlsms II 384653 Standard deviation 61988
H = 1 27 SD= 041 SR= 1 02 J= 038
A-40
STATION 55 Date 17 August 1984 Depth 18 m Salinity (bottom) 00 ppt Temperature (bottol) 223 C No of samples 10
Frequency Density (nom 2 ) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 291 1000 249853 118104 Turbellaria 1 100 859 2715 M~ntb~ mni~Q Oligochaeta
1 47
100 1000
859 40354
2715 28347
~~iQQ~sectkY~ll int~[m~gi bitbQQ1YSDY Yi(gn Bivalvia
25 12
6
900 500 400
21465 10303 5152
1231 0 18459 7240
~Q~2ipoundY mnil~ni Ostracoda
11 8
400 600
9445 6869
12442 6773
bmnQpoundYb~r~ SPa 52 1000 44647 19746 ~QrQsbY lmgnisectsQiielo snQ~ni~ Chironomid larvae
43 5
15
1000 400 BOO
36920 4293
12879
21436 6071 8344
Mean number of organismssample 517 Standard deviation 174
M b f I 2ean num er 0 organlsms m 443896 Standard deviation 149431
W = 228 SD= 065 SR= 1 33 J= 062
A-41
STATION 45 Date 29 August 1984 Depth 55 III
Salinity (bottom) 07 ppt Temperature (bottom) 199 C No of samples 10
Frequency Density (noI 2) Total occurrence
Taxa number (X) X SD
Nematoda 192 1000 164851 98380 ~sntbsect limnipoundQlDligochaeta
2 198
200 1000
171 7 170003
3620 67339
~Q[eipoundYls msniln~isect Ostracoda
1 4
100 400
859 3434
2715 4434
bimnQpoundytb[s Spa gQ[Qeniy sect21QOi~ sectpoundQttQlsO poundsOsggOi
164 87
2468
1000 1000 1000
140810 74698
2119025
39283 39460
840890
Mean number of organismssample 311 6 Standard deviation 101 1
ill b f 2nean nUll er 0 organIsms 2675398 Standard deviation 8682B8
W= 116 SD= 036 SR= 060 J= 039
A-42
STATION 18 Date 29 August 1984 Depth 30 bull Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samples 10
Total Frequency occurrence
Densi ty 2
(nom )
Taxa number (~ ) x S D
Nematoda 150 1000 128790 28905 Turbellaria 7 400 6010 9096 ~nh imni~Qj Oligochaeta ~~i~2Y~k~~1 ini~CIDgii bih2g~Qb~ Yi(~U2 Bivalvi a
B 145
1 1 2
600 1000
100 100 200
6869 124497
859 859
171 7
677 3 84732
271S 2715 3620
~Q[Qi~yli miDllgni bimn2pound~ih~C sp ~QtQehiY imQUia Harpacticoida
7 7
265 1
500 300
1000 100
6010 601 0
227529 859
8145 10747
139462 2715
sect~QtiQDi ~Q~Q~i~ Chironomid larvae
2471 2
1000 200
2121601 171 7
1063112 3620
Mean number of organismssample 3067 Standard deviation 121 9
2Mean number 0 f organIsms m 2633326 standard deviation 1046718
H = 1 09 SD= 034 SR= 1 04 J= 029
A-43
STATION 58 Date 29 August 1984 Depth 55 111
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (noI 2 ) Total occurrence -----------------
Taxa nUllber (X) X SD
Nemertea 4 400 3434 4434 Nuatoda 64 1000 54950 25016 Turbellaria 9 400 7727 11047 ~Hl~b limli~Q19 Oligochaeta
1 37
100 1000
859 31769
2715 19006
i~Qyh il(~~ bHtlQSlheln Yl Bivalvia
4 4
20
200 300 400
3434 3434
17172
8215 6003
26541 ~e(ijY l bQ~dlH sp
26 1
700 100
22324 859
25662 2715
~Q[QQhil iQ sectjgUell HD Heleidae larvae
418 20
1
1000 800 100
358895 17172
859
129443 12799 271 5
Mean number of organismssample 609 Standard deviation 175
nean num b er 0 f organIsms 1 111 2 522887 Standard deviation 150164
H= 176 SD= 051 SR= 1 30 J= 047
A-44
I I
I
I
STATION SS
Date 29 August 1984 Depth 21 1
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (no2) Total occurrence
Taxa nUllber (X) x S D
Nematoda ISO 1000 128790 37969 Turbellaria 1 100 859 271 5 Oligochaeta 48 1000 41213 16088 ~i~g~sect~~l iQ~~mgi bi~QQg~gb~sect ~i~nsect
10 14
600 600
eSB6 12020
9050 14137
Bivalvia 4 200 3434 7240 ~Q[Q~Yl niQaa Ostracoda
15 7
700 SOO
12879 6010
15806 7069
bmQg~~~b~ SPa 14 800 12020 8295 ~g[gaby mgni sect~g~~Qn ~ngnai Chironomid larvae
IB4 25 9
1000 900 700
157982 21465
7727
35563 16810 6335shy
Mean number of organismssample 481 Standard deviation B6
2Mean number 0 f organlsms m 412987 Standard deviation 74131
H= 24S SD= 074 SR= 1 23 J= 068
A-45
STATION 45 Date 14 September 1984 Depth 61 11
Salinity (bottom) 03 ppt Temperature (bottom) IB4 C No of samples 10
---------------------------------~----------------------------------------
Taxa TotalnUlllDer
Frequency occ~~~ence
Density (no 2) -----X-------sect7B
Nematoda 189 1000 162275 85233 t1tQ SPa
Turbellaria 2 2
200 100
171 7 171 7
3620 5430
~~~nIng limoifQl t1QQQDi~ flQriQ Oligochaeta
5 19
142
400 800
1000
4293 1631 3
121921
6071 12442 30504
~QQifYl mDl~D bimoQpoundt1hgr Spa Cumacea
19 184
2
800 1000 200
1631 3 157982
171 7
130B4 69541 3620
~Q[QnniYm ~~lmQDi Harpacticoida
118 1
1000 100
10131 5 B59
43367 2715
sectfQIIQD fOQgO Chironomid larvae
1780 1
1000 100
1528308 859
673586 2715
Mean number of organismssample 2464 Standard deviation 874
M ean num b er f 20 organlsms 2115590 Standard deviation 750305
H= 151 SD= 046 SR= 1 07 J= 041
A-46
STATION 18 Date 14 September 1984 Depth 21 III
Salinity (bottom) 01 ppt Temperature (botto) 182 C No of samples 10
Frequency DenSity (nom 2 ) Total occurrence ---------------- shy
Taxa nUlDber (i) X SD
Nemertea 1 100 859 271 5 Nematoda 186 1000 159700 44925 Turbellaria 16 400 13738 20717 ~~Dth~~ limni~Ql Oligochaeta
13 55
700 900
11162 47223
9096 30085
~Q~ei~Yl nil~Qi~ 17 900 14596 7069 bimDg~lbg[ Spa b 500 5152 6003 ~Q[Q2niY ~lgQi~ Harpacti coi da
562 2
1000 200
482533 171 7
136766 3620
sectpoundQttQ~Q~ ~n~ni 791 1000 679153 324290
Mean number of organismssample 1649 Standard deviation 447
I 211ean nUll ber 0 f organIsms I 1415831 Standard deviation 384136
H= 179 SD= 064 SR= 084 J= 054
A-47
STATION 58 Date 14 September 1984 Depth 58 III
Salinity (bottom) 01 ppt Temperature (bottom) 191 C No of sampl es 10
-------------------------------------------~------------------------------Frequency Density (nom 2 )
Total occurrence Taxa number eX) X SD
Nemertea 1 100 859 2715 Nematoda 55 1000 47223 18658 Turbellaria 10 500 8586 11448
1 100 859 2715 Oligochaeta 41 1000 35203 17850 ~~iQQ~~gll iu1g[m~i ~Q[Q~Yl nilD bimnQ~Y~h[ Spa ~Q[Q~hiYm lmgui sectpoundQilg1D poundU2D Chironomid larvae
4 10
2 277
23 4
100 500 200
1000 700 300
3434 8586 171 7
237832 19748 3434
10861 11448 3620
50561 21051 6003
Mean number of organismssample 428 Standard deviation 51
M b f 2ean num er 0 organIsms III 367481 Standard deviation 43743
H= 179 SD= 055 SR= 114 J= 052
A-48
I I
STATION SS Date 14 September 1984 Depth 21 II
Salinity (bottom) 01 ppt Temperature (bottom) 190 C No of samples 10
--------------------------------------------------------------------~-----
Frequency Density (no1I2) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 102 1000 87577 39200 Oligochaeta 34 700 29192 31142 ~iQ2Y~y1 int(mgi~ bithQgl~en~ Yi(gDsect ~Q(~i~Y m~DilgDsecti~ bimDQamp~1h(sect sp ~2(QQhiY slmQD 2poundQiiQlsD ~sD~g~nsecti Chironomid larvae
36 18 16 17
100 16
3
1000 600 800 700
1000 800 300
30910 15455 13738 14596 85860 13738 2576
157BO 20953 10078 14621 32126 10861 4147
Mean number of organismssample 342 Standard deviation 97
2Mean nUllber 0 f organlsms m 293641 Standard deviation 83617
H= 262 SD= 079 SR= 095 J= 083
A-49
Appendix B--Sediment particle size and organic content of the Cathlamet Bay
benthic invertebrate sites 13 March through 14 September
1984
iii
1
Station 18a 48 54 57
Survey 1 1 1 1
Month March March March March
Day 13 13 13 13
Particle size (mm) Phib Percent by weight
gt 40 -2 000 000 000
20- 40 -1 000 000 000
10- 20 0 000 009 000
05- 10 1 018 1079 032
025- 050 2 545 7583 2468
0125- 025 3 8731 1225 6783
00625-0125 4 491 037 657
lt0625 (5-12) 216 067 060
Organic Content 160 116 128
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
b Phi= -log2(sediment particle diameter in mm)
B-1
Station 18a 48 54 57
Survey 2 2 2 2
Month April April April April
Day 5 5 5 5
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 003 093 000
05shy 10 1 005 31 75 023
025shy 050 2 087 5904 2368
0125- 025 3 6316 750 7155
00625-0125 4 3056 026 427
lt0625 (5-12) 533 052 028
Organic Content 081 077 065
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-2
Station 45 55 58
Survey 3 3 3 3
Month April April April April
Day 18 18 18 18
Particle size (mm)
gt 40
Phi
-2
Percent by weight
000 000 000
20shy 40 -1 000 000 000
10shy 20 0 005 009 004
05shy 10 1 010 027 013
025shy 050 2 015 095 225
0125- 025 3 097 536 6111
00625-0125 4 453 2821 2205
lt0625 (5-12) 9420 6511 1442
Organic Content 31 42 14
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-3
Station 18a 45 55 58
Survey 4 4 4 4
Month May May May May
Day 4 4 4 4
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 021
05shy 10 1 000 065 063
025shy 050 2 012 370 230
0125- 025 3 091 4099 4696
00625-0125 4 322 3650 3052
lt0625 (5-12) 9575 1810 1939
Organic Content 330 180 160
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-4
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
5
May
17
000
000
005
016
217
5862
2729
1170
100
45 55 58
5 5 5
May May May
17 17 17
Percent by weight
000 000
000 000
005 008
113 031
325 274
1903 5613
2784 2401
4870 1672
240 110
000
000
000
010
020
079
397
9494
390
B-5
Station 18al 45 55 58
Survey 6 6 6 6
Month June June June June
Day 6 6 6 6
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 020
05shy 10 1 005 051 027
025shy 050 2 005 301 1 79
0125- 025 3 074 3189 5404
00625-0125 4 599 4118 2885
lt0625 (5-12) 9317 2332 1485
Organic Content 340 240 150
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-6
Station
Survey
Month
Day
Particle size Cmm) Phi
gt 40 -2
20shy 40 -1
10shy 20 a
05shy 10 1
025shy 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
7
June
18
000
000
005
029
138
3917
4143
1768
180
45
7
June
18
55 58
7 7
June June
18 18
Percent by weight
000
000
000
010
020
080
427
9464
310
000 000
000 000
000 007
011 022
057 190
957 5286
3023 2642
5957 1853
1 70 110
B-7
Station 18al 45 55 58
Survey 8 8 8 8
Month July July July July
Day 2 2 2 2
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 006 002 006
05shy 10 1 006 0l3 023
025shy 050 2 017 088 171
0125- 025 3 074 2712 5365
00625-0125 4 552 3892 3081
lt0625 (5-12) 9345 3294 l354
Organic Content 410 210 160
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-8
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
9
July
17
000
000
003
013
130
4294
4434
1127
130
45
9
July
17
Percent
000
000
000
006
012
051
046
9885
290
55
9
July
17
by weight
000
000
019
048
091
628
3616
5597
030
58
9
July
17
000
000
004
022
158
5017
3148
1650
140
B-9
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18al
10
August
1
45
10
August
1
55
10
August
1
58
10
August
1
Percent by weight
000 000
000 004
001 004
009 018
018 088
098 306
049 2510
9824 7070
000
005
045
763
3604
4495
932
156
100 190 060
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-10
Station 18 45 55 58
Survey 11 11 11 11
Month August August August August
Day 17 17 17 17
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000 000
20- 40 -1 005 000 000 000
10- 20 0 021 003 000 210
05- 10 1 064 009 000 159
025- 050 2 226 027 045 2656
0125- 025 3 3259 131 712 3719
00625-0125 4 4327 195 1737 1159
lt0625 (5-12) 2098 9635 7506 2097
Organic Content 210 300 160 100
Ii I
B-11
Station
Survey
Month
Day
Particle size (mm) Phi
gt40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
12
August
29
000
000
012
046
186
3465
4498
17 93
241
45
12
August
29
55 58
12 12
August August
29 29
Percent by weight
000
000
002
009
026
118
189
9656
540
000 000
000 000
003 011
011 028
055 1013
859 5033
1596 1827
7476 2089
1 70 120
B-12
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
_-------------------- shy
B-13
APPENDIX A--Descriptive summary of benthic invertebrate data collected in
Cathlamet Bay Oregon during March through September 1984
STATION 18 Date 13 March 1984 Depth 46 m Salinity (bottom) 11 ppt Temperature (bottom) 67 C No of samples 15
Frequency Density (nom 2 ) Total occurrence
Taxa number (7) X SD
Nemertea 2 67 1145 4434 Nematoda 134 1000 76702 33169 Turbellaria 22 667 12593 15854 ~~n~b~~ imnpoundQ 31 Oligochaeta 486
933 17744 1468 1 100() 278186 138779
~QtQif~12 mnil~nsectisect 24 Ostracoda 39
933 13738 8462 800 22324 17715
~Q[QQbiYm ~lmQni~ 74 867 42358 38B70 EQntQIH~i2 Qyi 1 EQri gnQQn 1 Harpacticoida 7
67 572 2217 67 572 221 7
333 4007 7159 Insecta 2 67 1145 4434 Chironomid larvae 20 667 1144 B 10090 Collembola 95 867 54378 82588 Hydracarina 1 67 572 221 7
Mean number of organismssample 626 Standard deviation 19 1
M ean num b er 0 f 2organIsms III 537484 Standard deviation 163579
H= 237 so= 069 SR= 1 42 J= 061
A-l
STATION 48 Date 13 March 1984 Depth 107 m Salinity (bottom) 05 ppt Temperature (bottom) bB C No of sampl es 15
Frequency Densi ty (nom 2 ) Total occurrence
Taxa number (7) X SD
Nemertea 31 6b7 17744 1849 1 Nematoda 38 667 21751 22685 Oligochaeta 4 133 2290 6859 ~QQpound12 2nil~nsectisect 31 Ostracoda 1
667 17744 29648 67 572 221 7
~Q9~~[~ spp 1 ~Q[Q2l ~~lQnisect 1 ~Q2sectiQisect sectisect 4 Harpacticoida 1
67 572 2217 67 572 221 7
200 2290 5097 67 572 221 7
Insecta 2 133 1145 3021 Diptera adult 1 67 572 2217 Collembola 24 467 13738 30923
Mean number of organismssample 93 Standard deviation 59
Mean number of organismsm2 795b4 Standard deviation 50740
H= 255 SD= 079 SR= 1 55 J= 071
A-2
STATION 54 Date 14 March 1984 Depth 177 m Salinity (bottom) 00 ppt Temperature (bottom) 66 C No of samples 15
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nemertea 47 1000 26903 14096 Nematoda 7 267 4007 9102 Turbellaria 9 333 5152 1114B Oligochaeta 11 333 6296 10989 Gastropoda 1 67 572 2217 ~Q(Qi~Yl mnil~n2i~ Ostracoda
199 3
1000 200
11390B 171 7
97165 3555
gQ[Qehiy sectlmQnisect Harpacticoida
3 1
200 67
171 7 572
3555 221 7
Heleidae larvae 29 867 16600 10989 Chironomid larvae 2 133 1145 3021 Collembola 2 67 1145 4434
Mean number of organismssample 209 Standard deviation 103
2Mean number 0 f organIsms m 179734 Standard deviation 88247
H = 1 86 SD= 056 SR= 1 33 J= 052
A-3
STATION 57 Date 13 March 1984 Depth 91 m Salinity (bottom) 00 ppt Temperature (bottom) 63 C No of sampl es 15
Frequency Densi ty (no 81 2) Total occurrence
Taxa number (X) X SD
Nemertea 27 667 15455 13459 Nematoda 8 400 4579 6381 Turbellaria 4 200 2290 5097 Oligochaeta 8 400 4579 6381 ~g[gipound~l mnilui Ostracoda
1 1
67 67
572 572
2217 2217
~Qgml[a spp 1 67 572 2217 ~Q[Qeni~m lmQnisect Harpacticoida
2 1
133 67
1145 572
3021 221 7
Insecta 3 67 171 7 b651 Chironomid larvae 1 b7 572 221 7 Collembola 37 400 21179 65700 Hydracarina 1 67 572 221 7
Mean number of organismssample 63 Standard deviation 82
Mean number of organismsm2 54378 Standard deviation 70029
H= 253 SD= 075 SR= 1 83 J= 068
A-4
STATION 18 Date 5 April 1984 Depth 30 II
Salinity (bottoll) 00 ppt Temperature (bottom) 90 C No of samples 15
Frequency Densi ty (no1I 2) Total occurrence
Taxa number (i ) If S D
Nemertea 11 bOO 6296 6042 Nematomorpha 2 133 1145 3021 Nuatoda 119 1000 6811 6 50947 Turbellaria 20 600 11448 13640 ~~~nin~sect liIDni~Q12 Oligochaeta
33 481
1000 1000
18889 275324
10364 142326
~Q~Qi~Yl m2nil~ni2 23 600 13165 1371 7 Ostracoda 33 933 18889 10861 gQ(QQrriYID sect2mQnisectHarpacti coi da
38 7
933 133
21751 4007
13329 13328
Chironomid larvae 16 667 9158 8868 ColI embola 1 67 572 2217
Mean number of organismssample 523 Standard deviation 227
M b f 2ean num er 0 organIsms m 448762 Standard deviation 194508
H= 202 SD= 059 SR= 114 J= 0S6
A-5
STATION 45 Date 18 April 1984 Depth 64 III
Salinity (bottom) 00 ppt Temperature (bottom) 95 C No of samples 15
Total Frequency occurrence
Density (noI 2 )
Taxa number (X) X SD
Nematoda 171 1000 97890 92277 tyg~ sp Turbellaria
1 29
67 600
572 16600
221 7 23506
H~nng~ imDi~g tQQsectQl fg~ig Oligochaeta ~Q[Qi~Y2 m2niD~i Ostracodamiddot
9 41
367 42
100
400 1000 1000 800
1000
5152 23469
210071 24041 57240
781 5 13563
100542 19254 43134
~Q[Qeniym amQnisectHarpacticoida Heleidae larvae
37 2049
1
933 1000
67
21179 117284B
572
189B5 616612
221 7 Chironomid larvae 3 200 171 7 3555 Collembola 1 67 572 221 7 Insect parts 1 67 572 221 7
Mean number of organismssample 1901 Standard deviation 864
b f 2nean num er 0 organIsms m 1632485 Standard deviation 741931
H = 1 52 SD= 046 SR= 1 13 J= 040
A-6
STATION 18 Date 18 April 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom) No of samples 15
Frequency Density (nom2) Total occurrence
Taxa nueber (X) x s D
Nemertea 13 533 7441 9663 Nematomorpha 3 200 171 7 3555 Nematoda 195 1000 111618 63675 Turbell ari a 9 467 5152 6326 ~~ni~~ i~ni~Ql~ 30 867 17172 129B1 Oligochaeta 580 1000 331992 108880 ~QC~i~Ml~ m~nil~n~isectOstracoda
28 18
1000 667
16027 10303
11179 10364
~Q[Q~~iYm sect~Qni2 sect~ci~ gniQQnHarpacticoida
105 1
17
1000 67
400
60102 572
9731
25553 2217
19970 Chironollid larvae 16 667 9158 8B6B
Hean number of organismssample 677 Standard deviation 199
M ean num b I 2er 0 f organIsms AI 580986 Standard deviation 171095
w = 202 SD= 062 SR= 1 10 J= 056
95 C
A-7
STATION 58 Date 18 April 1984 Depth 67 m Salinity (bottom) 00 ppt Temperature (botto) No of samples 15
Frequency Density (nom2) Total occurrence
Taxa number (~) X SD
Nemertea 62 933 35489 26338 Nematoda 224 1000 128218 49903 Turbellaria 9 600 5152 4354 ~nt~sect imni~Q Oligochaeta
1 79
67 1000
572 45220
2217 23506
bnQgYRhY~ Yi~~nE ~Q(~i~Y nil~ni Ostracoda
2 10 19
67 533 600
1145 5724
10876
4434 6214
10989 ~Q[QeniY sectQOiHarpacticoida
30 2
B67 133
17172 1145
12142 3021
Heleidae larvae 6 333 3434 5430 Chironomid larvae 9 400 5152 7B1 5 Chironomid pupae 2 133 1145 3021
Mean number of organismssample 303 Standard deviation 94
I 11 ean num ber 0 f organlsms 2 260442 Standard deviation 81043
H= 233 SO= 070 SR= 1 36 J= 063
97 C
A-B
Frequency Density (nolm 2) Total occurrence -----------------
Taxa number (7) X SD
Nemertea 16 467 9158 10989 Nematoda 266 1000 152258 54541 Turbellaria 23 600 13165 15518 ~l~nH ~Q~iQH 2 133 1145 3021 Oligochaeta 181 1000 103604 56532 bi~hQg~Qn~~ ~it~l~ ~QtQifg mli~lsectisectOstracoda
3 59 15
200 1000 733
1717 33772 8586
3555 23054
7256 ~Q[QQhiY HmQtlsect ~Q[QehiYm sect21tlfQ[lg EQlQQQt~i hQ~i
466 3 1
1000 200 67
266738 171 7 572
75094 3555 221 7
Harpacticoida 30 400 17172 40402 Chironomid larvae 10 533 5724 6214
Mean number of organismssa_pIe 717 Standard deviation 143
I 2Mean number 0 f organlsms m 615330 Standard deviation 122532
H= 226 SO= 072 SR= 119 J= 061
STATION 55 Date 18 April 1984 Depth 30 1ft
Salinity (bottom) 00 ppt Temperature (bottom) 93 C No of SaIIples 15
A-9
STATION 45 Date 4 Hay 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 103 C No of samples 10
Frequency Density (noI2) Total occurrence ---------------- shy
Taxa number (Xl X SD
Neutoda 269 1000 230963 167296 Turbellaria 1 100 859 2715 ~u~yuti Q~iQ ~Ub imni~Q
1 2
100 100
859 171 7
2715 5430
j2~Qn flec Oligochaeta
28 169
BOO 1000
24041 145103
19326 74351
~igeYk~ll iulCIDai ~Q(Qi~Y uini Ostracoda
32 4 5
aoo 400
400
27475 3434 4293
22463 4434 6071
biQQ~~tbt sp ~e(QQbYm mQoi sectampQeD ~nQDisect Chironomid larvae
25 2
578 2
900 200
1000 200
21465 1717
496271 171 7
15279 3620
293820 3620
Mean number of organismssample 111 8 Standard deviation 522
11 b f I 2ean num er 0 organIsms m 95991 5 Standard deviation 447842
H= 193 SD= 065 SR= 118 J= 052
A-10
STATION 18 Date 4 Hay 1984 Depth 34 II
Salinity (bottom) 00 ppt Temperature (bottom) 104 C No of saMples 10
Frequency Density (noI 2 ) occurrence ----------------shy
Taxa (X) X SD
Nemertea 10 600 8SB6 10709 Nuatoda 153 1000 131366 47899 Turbellaria 8 600 6869 6773 ~n1b limnpoundQl Oligochaeta
11 147
700 1000
middot9445 126214
9449 6231 7
~i~g~kXl in1(m~i ~g(2iY OiOi Ostracoda
86 4 1
900 300 100
73840 3434 859
61543 6003 2715
bimoQpoundx1b( sp ~2(QQbiYm mgoiDi ptera adult
3 57
3
300 900 300
2576 48940
2576
4147 21815 4147
Chironomid larvae 4 300 3434 6003 Chironomid pupae 1 100 859 2715
Hean nUMber of orQanismssample 489 Standard deviation 160
b f 2nean nUll er 0 organIsms II 418997 Standard deviation 137721
H= 243 SD= 076 SR= 1 34 J= 066
A-l1
STATION 5B Date 4 Hay 1984 Depth 61 bull Salinity (botto~) 00 ppt Temperature (bottom) 110 C No of suples 10
Frequency Density (nom 2) Total occurrence ---------------- shy
Taxa number (X) X SD
Neertn 41 1000 35203 21206 Nematoda 211 1000 181165 53305 Turbellaria 4 200 3434 7240 Oligochaeta 89 1000 76415 32240 ~i~2~~~11~ iU1(~i~bi1begygny YitQ ~e(biYl ~OiDi OstracDda
4 3
20 1
400 200 BOO 100
3434 2576
17172 859
4434 5795
19829 2715
biue~1bt~ sp ~2(egniY Imeoi sectg11g1O OdD Helei dae larvae
5 32
1 1
400 900 100 100
4293 27475
859 859
6071 18010 2715 2715
Chironomid larvae 7 400 6010 9096
Mean number of organismssample 419 Standard deviation 93
b f 2ean nUll er 0 organIsms m 359753 Standard deviation 79875
H= 221 SD= 068 SR= 138 J= 060
A-12
Frequency Density (nolm 2) occurrence -----------------
Taxa (X) X SD
Nemertea 23 900 1974S 15171 Neutollorpha 1 100 859 271 5 Nellatoda 269 1000 230963 69923 Turbellaria 10 600 8586 991 4 ~~xYnki Q~ampiQ 4 300 3434 6003 ~nb limnipoundQl Oligochaeta
1 79
100 1000
859 67829
2715 40363
~i~Q~kXl io[~i biDe9XQDX ~i[~OBi valvi a
11 3 1
800 300 100
9445 2576 859
6335 4147 271 5
~Q[~poundY mnil~n bimoQampXD[ sp ~Q[QabiY lQO Harpacticoida
18 2
159 1
700 200
1000 100
15455 171 7
135659 859
13904 3620
54272 2715
Chironomid larvae 2 200 171 7 3620 Trichoptera larvae 1 100 859 2715
STATION 55 Date 4 May 1984 Depth 21 m Salinity (bottom) 00 ppt Temperature (bottom) 107 C No of suples 10
Mean number of organismssamples 594 Standard deviation 147
Mean number of organismsm2 501422 Standard deviation 126525
H= 219 aD= 069 SR= 1 63 J= 055
A-13
STATION 45 Date 17 May 1984 Depth 61 m Sal i ni ty (bottom) 01 ppt Temperature (bottom) 121 C No of sampl es 10
Frequency Total occurrence
Taxa nUlllber (7)
NelDertea 1 100 859 2715 Nematoda 163 1000 139952 127996 Polychaeta 1 100 859 2715 ~~~n~h~ imni~Qs Hobsonia florida
2 6
200 600
171 7 5152
3620 4434
Oligochaeta 329 1000 282479 13291 8 ~~lQQYsectk~~12 in~~rmQi 57 900 48940 33142 ~Qr~ipound~2 ffi2niDi 6 500 5152 6003 Ostracoda 5 200 4293 10898 bimDg~yth( SPa 13 600 11162 12176 ~Q(Qebi~m sectQDisect Harpacticaida
2 2
200 100
1717 1717
3620 5430
2poundQttQD poundDQDsectisectDiptera adult
296 1
1000 100
254146 859
172633 271 5
Mean number of organismssample 884 Standard deviation 326
b f I 2nean num er 0 organlss m 759002 Standard deviation 280131
H= 209 SD= 071 SR= 1 33 J= 055
A-14
STATION 18 Date 17 May 1984 Depth 30 m Salinity (bottom) 00 ppt Temperature (bottom) 122 C No of samples 12
Frequency Density (nom2) Total occurrence -----------------
Taxa number (X) X SD
Nematoda 50 833 35775 22815 ~ntb limnipoundQl 3 Oligochaeta 97
250 833
2147 69404
3883 48495
~igQ~~k~ intr~ 27 ~QrQipoundY mnin~i~ 5
667 333
19319 3S7S
19068 5740
Ostracoda 1 83 716 2479 bimnQpound~nr sp 5 ~Q(Q~bY ~mQni S4 ~Q(Q~niY ~QinipoundQ(n 3
333 833 250
3578 60102
2147
5740 43780 3883
fgnQ2Q(i bQ~i 1 sectpoundQtgO poundnQn~i 2 Chironomid larvae 4
83 167 250
716 1431 2862
2479 3342 5592
Mean number of organismssample 235 Standard deviation 116
nean nURl b er 0 f organlslls II 2 201771 Standard devi ati on 99221
H= 236 SD= 075 SR= 1 35 J= 066
A-15
STATION 58 Date 17 May 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) 123 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nemertea 2 100 171 7 5430 Nematoda 75 1000 64395 34404 ~~2Qih~a limQi~Q 2 200 171 7 3620 Oligochaeta 60 1000 51516 33376 ~~igQY~~~12 iQ~[~~gi 2 200 171 7 3620 bitQQ9~Bh~sect Yr~Qsect 3 200 2576 579~
gQ[Qi~Yl ID2Dil~nsectisect Ostracoda
6 6
500 400
5152 5152
6003 8295
binQ~~nr[ sp gg[QQOYm mQQsect sect~QttQn 5n2Q~nsectia Chironomid larvae
2 34
1 1
200 1000
100 100
171 7 29192
859 859
3620 12927 271 5 2715
Mean number of organismssample 194 Standard deviation
2Mean nurn ber 0 f organIsms fA 166568 Standard deviation 56259
H= 225 SD= 072 SR= 1 45 J= 063
A-16
66
STATION 55 Date 17 May 1984 Depth 24 II
Salinity (bottom) 00 ppt Telllperature (bottom) 126 C No of samples 10
Total Frequency occurrence
Taxa nUllber (X) X SD --------------------------------------------------------------~-----------
Nematollorpha 2 200 171 7 3620 Nematoda 63 1000 54092 35297 Oligochaeta 94 1000 80708 44004 ~~iQQY~k~~l iQt~(m~Qi bitnQg~Qh~~ Yi[~Q gQ[QipoundY~ mni~Q~i Ostracoda
10 9 4 2
600 800 300 100
8586 7727 3434 171 7
9050 4874 6003 5430
bimnQ~~ln~[e sp ~Q(QQbiYm mQD ~Q[QQbiYm 2inipoundQ[n~ Chironomid larvae
6 142
3 1
600 1000 200 100
5152 121921
2576 859
4434 50682 5795 2715
Mean number of organismssample 336 Standard deviation 62
2Mean num ber 0 f organisms m 288490 Standard deviation 53421
H= 214 SD= 071 SR= 119 J= 062
A-17
STATION 45 Date 1 June 1984 Depth 61 m Salinity (bottom) 01 ppt Temperature (bottom) 139 C No of samples 10
Total Frequency occurrence
Density (no2)
Taxa nUllber (1) X SD
Nematoda 174 900 149396 132347 Turbellaria 5 200 4293 10898 ~~~QiQ~sect tmQtpoundQ~ ~QQsectQ flQi~sect Oligochaeta ~~iQQysecttygl~ iQl~rm~~i2 ~Q[Qi~~l~ ~~DilgDsectisect Ostracoda
5 20
190 103
12 5
400 900
1000 900
60 (I 400
4293 17172
163134 88436 10303 4293
6071 8095
92563 51524 11304 6071
bimnQpoundytng[ sp ~gQmYsectisect IDg[pound~Qisect ~Q[QQhi~m sectlmQDisect sectpoundQtiQlsectQ pound~Qgsectisect ChironQmid larvae
33 1
10 375
2
900 100 700
1000 200
28334 859
8586 321975
171 7
17196 2715 7010
179201 3620
Mean number of organismssample 935 Standard deviation 254
nurn b 0 f 2lean er organlsms m 802791 Standard deviation 218423
H= 239 SD= 075 SR= 1 22 J= 065
A-18
STATION 18 Date 1 June 1984 Depth 30 AI
Salinity (bottom) 00 ppt Temperature (bottom) 134 C No of samples 11
Frequency Density (no 1m2)
Taxa Total number
occurrence (X)
---------------- shyX SD
Turbellaria 14 636 10928 1157 7 ~~~Qltlg~ ilipoundQ~ Oligochaeta
10 178
727 1000
7805 138937
601 6 67913
~~iQQy~tY~l~ ill~[m~Qi~ 122 636 95227 93619 ~Q[Qipound~ l~i~lsectisect Ostracoda
7 1
455 9 1
5464 78 1
6946 2589
billQylhg[ Spa 16 818 12489 10420 GQ[QQQil HQi~ 139 1000 108496 70934 gQ[Qebi secteiifQ[~ sectQiiQi2 ~Q~sectisect Diptera pupae
1 2 1
9 1 182
11 1
781 1561 781
2589 3473 2589
Chironomid larvae 2 182 1561 3473
Mean number of organismssample 714 Standard deviation 284
nean num b er 0 f organlsms m 2 612728 Standard deviation 244249
H= 232 SD= 075 SR= 1 25 J= 063
A-19
STATION 58 Date 1 June 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 138 C No of samples 10
Frequency Density (noI 2 ) Total occurrence
Taxa number (X) X SD
Nematoda 173 1000 148538 47383 Turbellaria 3 300 2576 4147 Oligochaeta 53 1000 45506 32139 ~giQgY2k~g~ ini~[m~Qi~ bQg91YehY2 Yi[~nsect ~Qr~i~Yl m~nl~n~i
26 1
10
600 100 500
22324 859
8586
3391 2 2715
13424 bimnQpound~Q~[ sp ~Q9~m[Y poundgnitYpoundQlysect ~QtQehiYm ~lQni
4 1
46
200 100
1000
3434 859
39496
8295 2715
22243 Chironomid larvae 1 100 859 271 5
Mean number of organismssample 318 standard deviation 103
M b f I 2ean num er 0 organlsms III 273035 Standard deviation 88842
H = 1 99 SD= 065 SR= 1 08 J= 060
A-20
STATION 55 Date 1 June 1984 Depth 27 m Salinity (bottom) 00 ppt Temp era t u r e (b 0 t tom) 140 C No of samples 10
Frequency Density (nom 2 ) Total occurrence
Taxa nueber (X) X SD
Nematoda 157 1000 134800 69524 Turbellaria 9 400 7727 13696 tlHl~lk ~2~~iQH 1 100 859 2715 Oligochaeta 49 1000 42071 32745 ~~iQQysect~gl~ S[l9sect bHbQghQb~~ Yirl~
10 1
400 100
8586 859
12799 2715
tQ[Qpoundls l2lilUsect bilQHSbg[ sp ~QrQQbil nllQisectHarpacticoida
4 7
134 1
400 500
1000 100
3434 6010
115052 859
4434 7069
44742 271 5
sectpoundQUQlls poundsQgn~sect Chironomid larvae
1 1
100 100
859 859
271 5 2715
Hydracarina 1 100 859 2715
Hean number of organismssample 376 Standard deviation 132
M b f 2ean num er 0 organIsms m 322834 Standard deviation 113127
H= 202 SD= 068 SR= 1 40 J= 055
A-21
STATION 45 Date 18 June 1984 Depth 67 m Salinity (bottom) 01 ppt Temperature (bottom) 149 C No of samples 10
Frequency Density (nom2)
Taxa Total nUllber
occurrence ex) i SD
Nematoda 109 1000 93587 3891 7 Turbell ari a 3 200 2576 5795 ~g~tbg limoipoundQl Q~Qni2 fQ(i~2 Oligochaeta ~gigQ~~Y inl[ggi ~Q[QiSY2 moilo Ostracoda
3 2
194 44
7 3
200 200
1000 1000 200 200
2576 171 7
16656B 37778 6010 2576
5795 3620
118364 36020 12831 5795
bimoQampl~n~[2 sp ~Q[QQbiYm lmgoi Harpacticoida sectpoundQQ1202 pound2022Osect Chironomid larvae
68 1 1
113 2
900 100 100
1000 200
58385 859 859
97022 171 7
97627 2715 2715
73976 3620
Mean number of organismssa_pie 550 Standard deviation 371
Mean nUll ber 0 f organIsms 2II 472230 Standard deviation 318519
H= 242 SD= 077 SR= 1 32 Ja 065
A-22
STATION 18 Date 18 June 1984 Depth 34 m Salinity (bottom) 00 ppt Temperature (bottom) 155 C No of samples 10
Frequency Density (nom 2) Total occurrence ----------------shy
Taxa nUlber (Z) X SD
Neutoda 291 1000 249853 138826 Turbellaria 1 100 859 2715 ~~n~~nki~ sectQ~~iQ~2 ~g~ntbg2 limni~Q9 Oligochaeta
1 3
123
100 300
1000
859 2576
105608
271 5 4147
48240 ~~igQY~~~~9 int~(mgii ~Q[~i~~~ mini~ni bimnQ~ylbg(~ Spa
67 6 5
1000 500 400
57526 5152 4293
40485 6003 6071
~Q(QebiYm ~imQnisect Harpacticoida
80 2
1000 200
68688 171 7
41276 3620
sect~QttQini ~2nig~n~i Chironomid larvae
2 4
200 300
171 7 3434
3620 6003
Mean number of organismssample 585 Standard deviation 194
I 2Mean urn b er 0 f organIsms m 502281 Standard deviation 166943
H= 203 SD= 068 SR= 1 20 J= 057
A-23
STATI ON 58 Date 18 June 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (noI 2) Total occurrence
TaKa number (X) X SD
Nellertea 2 100 1717 5430 Nematoda 160 1000 137376 6361 1 Turbellaria 4 400 3434 4434 Oligochaeta 36 1000 3091 0 14705 ~iQQYik~ Q1rQ 4 300 3434 6003 bitnQgl~ebysect YrDsect ~Q[QiY~ ~~nni biQQpoundY1h[ sp ~Q[Qeng ~ilQD Chironomid larvae
3 1 3
61 1
300 100 300
1000 100
2576 859
2576 52375
859
4147 2715 4147
1428 1 2715
Chironollid pupae 1 100 859 271 5
Mean number of organismssample 276 standard deviation 72
nean nurn b er 0 f organIsms I 2 236974 Standard deviation 61410
H = 1 78 SD= 060 SR= 1 23 J= 051
A-24
STATION 55 Date 18 June 1984 Depth 18 m Salinity (bottom)1 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (no 1m2) occurrence
Taxa (X) X SD
Nematoda 160 1000 137376 43967 Turbellaria 1 100 859 271 5 Oligochaeta 61 1000 52375 31985 ~~iQQY~kY~~ int~[mQi~ ~Q[Qipound~l~ m~nini~ biIDnQ~Ylb[s sp
3 3 3
300 300 300
2576 2576 2576
4147 4147 4147
~Q[Q~bi~ ~slIDQni~ Chironomid larvae
85 6
1000 600
72981 5152
34165 4434
Mean number of organismssample 322 Standard deviation 75
2Mean number 0 f organIsms m 276469 Standard deviation 64099
H= 178 5D= 065 SR= 0B4 J= 059
A-25
Frequency Density (no2) occurrence -----------------
Taxa (7) X SD
Nematoda 104 1000 89294 47409 Turbell ar i a 1 100 859 2715 ~~~nQ~sect imni~Q~ tjQQsectQlis flQig~ Oligochaeta
2 1
297
100 100
1000
171 7 859
255004
5430 271 5
146273 ~~i~QYsect~Y~lls ilr2is gQrQi~y~ IDDilDia
24 4
600 300
20606 3434
27212 6003
Ostracoda 2 200 171 7 3620 biDQSy~b~C~ sp M~QYsectisect m~r~~Qi ~QrQeniy QD Harpacticoida
157 1 1 1
900 100 100 100
134800 859 859 859
73197 2715 2715 2715
sectpoundQttQDs SsDQD 113 900 97022 61656
STATION 45 Date 2 July 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) No of samples 10
172 C
Mean number of organismssample 708 Standard deviation 339
M ean num b er f 20 organisms 607889 Standard deviation 290B22
H= 216 SD= 073 SR= 1 27 J= 058
1-26
STATION 18 Date 2 July 1984 Depth 24 WI
Sal inity (bottom) 00 ppt Temperature (bottom) 172 C No of samples 10
--------------------------------~-----------------------------------------Frequency Density (nom2)
Total occurrence Taxa number (7) X SD
Nematoda 202 1000 173437 113532 ~~~nih~sect mnpoundQ~ Oligochleta
4 102
400 1000
3434 87577
4434 54873
~~igQYsect~Y~12 inl~rmgi2 ~Q[~poundYl~ m~ni~nsectisect bimnQpoundylh~[~ Spa
115 4
15
900 300 900
98739 3434
12879
100720 6003 9274
~Q[QQniY~ sect~QDi~ 55 900 47223 40525 Harpacticoida 1 100 859 2715 sectpoundQiiQlD SDg~DEisect Chironomid larvae
2 6
200 400
1717 5152
3620 7240
Hymenoptera 1 100 859 2715 Hydracarina 1 100 859 2715
Mean number of organismssample 508 Standard deviation 253
2Mean num ber 0 f organIsms m 436169 Standard deviation 217580
H= 225 SD= 074 SR= 1 22 J= 063
A-27
STATION 58 Date 2 July 1984 Depth 58 1
Salinity (bottom) 00 ppt Temperature (bottom) IBO C No of samples 10
Frequency Density (no2) Total occurrence
Taxa number ltX) i SD
Nematoda 151 1000 129649 42729 Turbellaria 1 100 859 2715 01 i gochaeta 41 1000 35203 22698 ~~i~e~~~ int~~m~~ 3 200 2576 5795 btbQglYRhY~ Yir~n~ ~e~~ampy mni~niii bimQeamp~tb~ sp ~e~eQhiY ~mQni Chironomid larvae
1 4 2
68 1
100 300 200
1000 100
859 3434 171 7
58385 859
271 5 6003 3620
1557 1 2715
Mean number of organisassample 272 Standard deviation
I 2Mean num ber 0 f organIsms I 233539 Standard deviation 62546
H = 1 69 SD= 061 SR= 099 J= 053
A-28
73
STATION 55 Date 2 July 1984 Depth 15 III
Salinity (bottom) 00 ppt Temperature (bottom) 182 C No of samples 10
Frequency Density (nom2) occurrence
Taxa (X) X SD
Nematoda 184 1()00 157982 5264B Turbellaria 1 100 859 271 5 Oligochaeta ~~iQQ~sect~Y~ll~ n~[~~Qi~ bitnggYQDYsect Yi[~nsect ~QrQipoundM2 m2ni~nsectisect bimnQpoundYn~[2 sp ~QrQQhiM Qni Harpacticoida
91 2 1 B 2
96 2
1000 200 100 500 200
1000 200
78133 171 7 859
6869 171 7
82426 1111
26058 3620 271 5 1890 3620shy
25980 3620
ChirDnomid larvae 5 400 4293 6071 Chironolllid pupae 1 100 859 2715
Mean number of organismssample 393 Standard deviation 53
2t1ean nUllber Df organlsms III 337430 Standard deviatiDn 45080
H= 187 SD= 067 SR= 116 J= 054
A-29
STATION 45 Date 17 Jul y 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (X) X SD
Nematoda 215 1000 184599 45837 ~~n~b~~ imDipoundQ Qe~Qni fllHi2
3 1
300 100
2576 859
4147 2715
Oligochaeta 305 1000 261873 147955 ~~iQQY~k~ in~rm~2i ~Qr~ipoundYl IDniln~i~ Ostracoda
17 1 2
500 100 200
14590 859
171 7
22554 2715 3620
bmnQpound~ihr sp ~QCQQhiY ~lQD~
176 1
1000 100
151114 859
57125 2715
Harpacticoida 4 300 3434 6003 sectQ~~Qn poundnQnai~ Chironomid larvae
91 5
1000 400
78133 4293
61310 6071
Mean number of organismssample 821 Standard deviation 275
M b f 2ean num er 0 organlsms m 70491 1 Standard deviation 236369
H= 215 SD= 073 SR= 114 J= 060
A-30
STATION 18 Date 17 Jul y 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom 203 C No of samples 10
Frequency Density (001 2 Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 339 1000 291065 119140 Turbellaria 3 200 2576 5795 ~~2~b~~ limnipoundQ12Oligochaeta
4 18S
300 1000
3434 161417
6003 89393
~~iQQy~~~ls in~(ID~Qi bim~Qampy~bg(2 Spa
34 16
800 700
29192 1373B
22967 15252
~g(gebi~m ~21mQni2 Harpacticoida
52 3
1000 200
44647 2576
25212 5795
2ampQ11Q1202 ampS02Qg~2i2 Chironomid larvae
18 10
700 700
15455 8586
13904 701 0
Mean number of organi$mssample 667 Standard deviation IBB
H ean nurn b er 1 20 f organIsms m 572686 Standard deviation 161750
H = 1 99 SD= 065 SR= 090 J= 060
A-31
STATION 58 Date 17 July 1984 Depth 55 AI
Salinity (bottom) 00 ppt Temperature (bottom) 197 C No of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nellatoda 173 1000 14853B 66390 Turbellaria 1 100 859 271 5 ~~~n~hu ini~QA Oligochaeta
1 46
100 1000
859 39496
2715 26293
~gipoundQy~~ygl2 in~rJg~i~ b1nQglYRnY~ Yi( Bivalvia
6 2 1
400 200 100
5152 1717 859
8295 3620 271 5
ei~ IDnH~n~i~ 2 200 171 7 3620 Ostracoda 1 100 959 271 5 biIDQHlh~( Spa ~Q(QRbim ~21Qnisect Diptera pupae
1 94
1
100 1000 100
859 80708
859
2715 35332 2715
Heleidae 1arvae 5 500 4293 4525 Chironomid larvae 1 100 859 2715
Mean number of organismssample 335 Standard deviatiDn 113
Mean number of organismsRI2 287631 Standard deviation 97413
H= 1 86 SO= 064 SR= 155 J= 049
A-32
STATION 55 Date 17 July 1984 Depth 18 m Sali nity (bottom) 00 ppt TeAlperature (bottom) 199 C No of samples 10
Frequency Density (nom2 ) occurrence
Taxa (X) x S D
Nematoda 61 1000 52375 33972 Turbellaria 1 100 859 2715 Oligochaeta 24 900 20606 11590 ~~i2QY~k~~1 iOi[2 bimDQ~xlb~r sp ~Q[QQhi~ sectgni~ Chironomid larvae
3 1
38 3
200 100
1000 300
2576 859
32627 2576
5795 2715
19326 4147
Mean number of organismssample 131 standard deviation 54
M b f 2ean num er 0 organIsms 112477 Standard deviation 46757
H= 184 SD= 066 SR= 085 J= 065
bull
A-33
STATION 45 Date 1 August 1984 Depth 58 m Sal i nity (bottoll) 03 ppt Temperature (bottom) 203 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa nUllber (X) X SD
Nematoda 145 1000 124417 52344 Turbellaria 1 100 859 2715 Mmth~sect iHpoundQ~ Q~~Qi ilQ[i9Oligochaeta
5 3
196
500 300
1000
4293 2576
168286
4525 4147
91064 ~igQYsect~~li int9i Ostracoda
2 3
100 300
171 7 2576
5430 4147
bimnQpoundtl sp ~Q[Q2hiY sectlQni~
240 6
1000 600
206064 5152
73526 4434
sectpoundQtQl poundngnai~Helei dae larvae
1862 1
1000 100
1598713 859
966134 271 ~
Mean number of organismssample 2464 Standard deviation 1156
211 ean num ber 0 f organIsms II 2115590 Standard deviation 992518
H= 124 SD= 041 SR= 089 J= 036
A-34
STATION 1S Date 1 August 1984 Depth 24 II
Salinity (bottom) 00 ppt Temperature (bottom) 198 C No of samp I es 10
Frequency Density (nom2) occurrence ---------------- shy
Taxa (X) X S D
Nuertea 1 100 859 2715 Nellatolllorpha 1 100 859 2715 Nematoda 248 1000 212933 108288 Turbellaria 4 400 3434 4434 ~untb~la Hli~g Oligochaeta
4 206
400 1000
3434 176872
4434 75309
~~igQYli~dli i[t~(gi~ ~QtQpound l binQ~ybt2 sp ~2l~bi Q[i ~2tlgtQ(ila tirisect sectpoundQtel poundl9lla Chironomid larvae
10 1
20 205
1 574
9
500 100 800
1000 100
1000 400
8586 859
17172 176013
859 492836
7727
10709 271 5
14021 48104
271 5 150531
13696
Mean number of organismssample 1284 Standard deviation 290
M b f I 2ean nurn er 0 organIsms III 1102442 Standard deviation 2488B5
H= 211 SD= 071 SR= 1 16 J= 057
A-35
STATION 58 Date 1 August 1984 Depth 55 m Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samp 1es 10
Frequency Densi ty _ ltnom2 ) Total occurrence
Taxa number (7) X SD
Nemertea 1 100 859 2715 Nematoda 22 900 18889 15036 Turbellaria 1 100 859 2715 Oligochaeta 19 700 16313 17385 biiQQgl~QhY~ YiCg~~ 2 200 171 7 3620 ~Q[~i~~l~ m2nil~n2i2 ~Q[QehiYm ~lmQni2
4 164
300 1000
3434 140810
6003 103048
Heleidae larvae 8 500 6869 8868
Mean number of organismssample 221 Standard deviation 111
I 2Mean num ber 0 f organIsms m 189751 Standard deviation 95391
H = L 37 SD= 043 SR= 090 J= 046
A-36
STATION 55 Date 1 August 1984 Depth 15 m Salinity (bottoll) 01 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (i ) X SD
Nemertea 1 100 859 2715 Neutoda 122 1000 104749 7394B Turbellaria 4 300 3434 6003 ~~~~~nt~ secte~poundQa~ Oligochaeta
1 118
100 1000
859 101315
2715 61223
~giQgY~k~~l iot~[m~Qi btbQg~2b~ Y[O ~grQipound~ ~nl~ni b~ngpound~tb~[ Spa
3 1 5 1
200 100 500 100
2576 859
4293 859
5795 2715 4525 2715
~Q[QebiYm ~mQoi sect~QttQ~ ~OQOi Heleidae larvae
42 2 2
800 200 100
36061 171 7 171 7
21341 3620 5430
Chironomid larvae 4 400 3434 4434
Mean number of organismssapIe 306 Standard deviation 169
M b f I 2ean nurn er 0 organIsms m 262732 Standard deviation 145101
H = 198 SD= 067 SR= 1 45 J= 054
A-37
~-- --------------~~-------------
STATION 45 Date 17 August 1984 Depth 61 1
Salinity (bottom) 10 ppt Temperature (bottom) 210 C No of samp 1es 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nematoda 240 1000 206064 130213 ~~h~sect limQ tjQ~~Hi~ fQ[i~~ Oligochaeta
31 2
245
400 100
1000
26617 1717
210357
75228 5430
121374 babgglYQbl~ Yi[~sect 1 100 859 2715 Ostracoda 1 100 859 271 5 biQ~xtb~[ Spa ~~Q~~isect ~[pound~Qisect ~Qgebi HQOi
333 2
143
1000 200
1000
28591 4 171 7
1227BO
106553 3620
106860 sectpoundQUg~ poundg~nsectisect 1738 1000 1492247 68441 7
Mean number of organismssample 2736 Standard deviation 944
M b f I 2ean num er 0 organlslls m 2349130 Standard deviation 810600
H= 172 SD= 056 SR= 079 J= 052
A-38
STATION 18 Date 17 August 1984 Depth 27 III
Sal i ni ty (botto) 01 ppt Temperature (bottom) 214 C No of samples 10
Frequency Density (nom 2 ) occurrence
Taxa (X) X SD
Nematoda 186 1000 159700 62468 ~tgt SPa 2 100 171 7 5430 Turbellaria 8 400 6869 8868 ~~ntbg2 imnipoundQ 12 700 10303 11304 Oligochaeta 283 1000 242984 90509 ~~iQQY~~Y~lls inlgtmggisBivalvia
4 1
400 100
3434 859
4434 271 5
~Qt~i~Y nilnsectisectbimnQpoundttbg[s SPa ~QtQQbi~ islmQDi2
1 17
286
100 900
1000
859 14596
245560
271 5 10747 83461
sectpoundetteln poundDsggnsectisect Chironomid larvae
526 4
1000 3Q0
451624 3434
179610 6003
Mean number of organismssapIe 1330 Standard deviation 162
Mean nurn ber I 20 f organIsms m 1141938 Standard deviation 139389
H= 214 SD= 073 SR= 1 06 J= 060
A-39
STATION 58 Date 17 August 1984 Depth 55 II
Salinity (bottom) 01 ppt Temperature (bottom) 220 C ND of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (7) x S D
Nematoda 68 1000 58385 27689 Turbellar i a 4 200 3434 8295 Oligochaeta 19 800 16313 13084 ~~i~Q~k~~l~ in~~[m~i bitUQ9Y2bYa Yi[~na Bivalvia
3 3 4
300 300 300
2576 2576 3434
4147 4147 6003
gQ[QipoundYl~ mnilDa 1 100 859 2715 binQpoundY~[ sp gQ[Q2UY a~mgnia sect~Qtgl~n ~n~~ni
2 338
6
100 1000 400
171 7 290207
5152
5430 56636 7240
Mean number of organismssample 448 Standard deviation 72
W b f 2lean num er 0 organlsms II 384653 Standard deviation 61988
H = 1 27 SD= 041 SR= 1 02 J= 038
A-40
STATION 55 Date 17 August 1984 Depth 18 m Salinity (bottom) 00 ppt Temperature (bottol) 223 C No of samples 10
Frequency Density (nom 2 ) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 291 1000 249853 118104 Turbellaria 1 100 859 2715 M~ntb~ mni~Q Oligochaeta
1 47
100 1000
859 40354
2715 28347
~~iQQ~sectkY~ll int~[m~gi bitbQQ1YSDY Yi(gn Bivalvia
25 12
6
900 500 400
21465 10303 5152
1231 0 18459 7240
~Q~2ipoundY mnil~ni Ostracoda
11 8
400 600
9445 6869
12442 6773
bmnQpoundYb~r~ SPa 52 1000 44647 19746 ~QrQsbY lmgnisectsQiielo snQ~ni~ Chironomid larvae
43 5
15
1000 400 BOO
36920 4293
12879
21436 6071 8344
Mean number of organismssample 517 Standard deviation 174
M b f I 2ean num er 0 organlsms m 443896 Standard deviation 149431
W = 228 SD= 065 SR= 1 33 J= 062
A-41
STATION 45 Date 29 August 1984 Depth 55 III
Salinity (bottom) 07 ppt Temperature (bottom) 199 C No of samples 10
Frequency Density (noI 2) Total occurrence
Taxa number (X) X SD
Nematoda 192 1000 164851 98380 ~sntbsect limnipoundQlDligochaeta
2 198
200 1000
171 7 170003
3620 67339
~Q[eipoundYls msniln~isect Ostracoda
1 4
100 400
859 3434
2715 4434
bimnQpoundytb[s Spa gQ[Qeniy sect21QOi~ sectpoundQttQlsO poundsOsggOi
164 87
2468
1000 1000 1000
140810 74698
2119025
39283 39460
840890
Mean number of organismssample 311 6 Standard deviation 101 1
ill b f 2nean nUll er 0 organIsms 2675398 Standard deviation 8682B8
W= 116 SD= 036 SR= 060 J= 039
A-42
STATION 18 Date 29 August 1984 Depth 30 bull Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samples 10
Total Frequency occurrence
Densi ty 2
(nom )
Taxa number (~ ) x S D
Nematoda 150 1000 128790 28905 Turbellaria 7 400 6010 9096 ~nh imni~Qj Oligochaeta ~~i~2Y~k~~1 ini~CIDgii bih2g~Qb~ Yi(~U2 Bivalvi a
B 145
1 1 2
600 1000
100 100 200
6869 124497
859 859
171 7
677 3 84732
271S 2715 3620
~Q[Qi~yli miDllgni bimn2pound~ih~C sp ~QtQehiY imQUia Harpacticoida
7 7
265 1
500 300
1000 100
6010 601 0
227529 859
8145 10747
139462 2715
sect~QtiQDi ~Q~Q~i~ Chironomid larvae
2471 2
1000 200
2121601 171 7
1063112 3620
Mean number of organismssample 3067 Standard deviation 121 9
2Mean number 0 f organIsms m 2633326 standard deviation 1046718
H = 1 09 SD= 034 SR= 1 04 J= 029
A-43
STATION 58 Date 29 August 1984 Depth 55 111
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (noI 2 ) Total occurrence -----------------
Taxa nUllber (X) X SD
Nemertea 4 400 3434 4434 Nuatoda 64 1000 54950 25016 Turbellaria 9 400 7727 11047 ~Hl~b limli~Q19 Oligochaeta
1 37
100 1000
859 31769
2715 19006
i~Qyh il(~~ bHtlQSlheln Yl Bivalvia
4 4
20
200 300 400
3434 3434
17172
8215 6003
26541 ~e(ijY l bQ~dlH sp
26 1
700 100
22324 859
25662 2715
~Q[QQhil iQ sectjgUell HD Heleidae larvae
418 20
1
1000 800 100
358895 17172
859
129443 12799 271 5
Mean number of organismssample 609 Standard deviation 175
nean num b er 0 f organIsms 1 111 2 522887 Standard deviation 150164
H= 176 SD= 051 SR= 1 30 J= 047
A-44
I I
I
I
STATION SS
Date 29 August 1984 Depth 21 1
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (no2) Total occurrence
Taxa nUllber (X) x S D
Nematoda ISO 1000 128790 37969 Turbellaria 1 100 859 271 5 Oligochaeta 48 1000 41213 16088 ~i~g~sect~~l iQ~~mgi bi~QQg~gb~sect ~i~nsect
10 14
600 600
eSB6 12020
9050 14137
Bivalvia 4 200 3434 7240 ~Q[Q~Yl niQaa Ostracoda
15 7
700 SOO
12879 6010
15806 7069
bmQg~~~b~ SPa 14 800 12020 8295 ~g[gaby mgni sect~g~~Qn ~ngnai Chironomid larvae
IB4 25 9
1000 900 700
157982 21465
7727
35563 16810 6335shy
Mean number of organismssample 481 Standard deviation B6
2Mean number 0 f organlsms m 412987 Standard deviation 74131
H= 24S SD= 074 SR= 1 23 J= 068
A-45
STATION 45 Date 14 September 1984 Depth 61 11
Salinity (bottom) 03 ppt Temperature (bottom) IB4 C No of samples 10
---------------------------------~----------------------------------------
Taxa TotalnUlllDer
Frequency occ~~~ence
Density (no 2) -----X-------sect7B
Nematoda 189 1000 162275 85233 t1tQ SPa
Turbellaria 2 2
200 100
171 7 171 7
3620 5430
~~~nIng limoifQl t1QQQDi~ flQriQ Oligochaeta
5 19
142
400 800
1000
4293 1631 3
121921
6071 12442 30504
~QQifYl mDl~D bimoQpoundt1hgr Spa Cumacea
19 184
2
800 1000 200
1631 3 157982
171 7
130B4 69541 3620
~Q[QnniYm ~~lmQDi Harpacticoida
118 1
1000 100
10131 5 B59
43367 2715
sectfQIIQD fOQgO Chironomid larvae
1780 1
1000 100
1528308 859
673586 2715
Mean number of organismssample 2464 Standard deviation 874
M ean num b er f 20 organlsms 2115590 Standard deviation 750305
H= 151 SD= 046 SR= 1 07 J= 041
A-46
STATION 18 Date 14 September 1984 Depth 21 III
Salinity (bottom) 01 ppt Temperature (botto) 182 C No of samples 10
Frequency DenSity (nom 2 ) Total occurrence ---------------- shy
Taxa nUlDber (i) X SD
Nemertea 1 100 859 271 5 Nematoda 186 1000 159700 44925 Turbellaria 16 400 13738 20717 ~~Dth~~ limni~Ql Oligochaeta
13 55
700 900
11162 47223
9096 30085
~Q~ei~Yl nil~Qi~ 17 900 14596 7069 bimDg~lbg[ Spa b 500 5152 6003 ~Q[Q2niY ~lgQi~ Harpacti coi da
562 2
1000 200
482533 171 7
136766 3620
sectpoundQttQ~Q~ ~n~ni 791 1000 679153 324290
Mean number of organismssample 1649 Standard deviation 447
I 211ean nUll ber 0 f organIsms I 1415831 Standard deviation 384136
H= 179 SD= 064 SR= 084 J= 054
A-47
STATION 58 Date 14 September 1984 Depth 58 III
Salinity (bottom) 01 ppt Temperature (bottom) 191 C No of sampl es 10
-------------------------------------------~------------------------------Frequency Density (nom 2 )
Total occurrence Taxa number eX) X SD
Nemertea 1 100 859 2715 Nematoda 55 1000 47223 18658 Turbellaria 10 500 8586 11448
1 100 859 2715 Oligochaeta 41 1000 35203 17850 ~~iQQ~~gll iu1g[m~i ~Q[Q~Yl nilD bimnQ~Y~h[ Spa ~Q[Q~hiYm lmgui sectpoundQilg1D poundU2D Chironomid larvae
4 10
2 277
23 4
100 500 200
1000 700 300
3434 8586 171 7
237832 19748 3434
10861 11448 3620
50561 21051 6003
Mean number of organismssample 428 Standard deviation 51
M b f 2ean num er 0 organIsms III 367481 Standard deviation 43743
H= 179 SD= 055 SR= 114 J= 052
A-48
I I
STATION SS Date 14 September 1984 Depth 21 II
Salinity (bottom) 01 ppt Temperature (bottom) 190 C No of samples 10
--------------------------------------------------------------------~-----
Frequency Density (no1I2) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 102 1000 87577 39200 Oligochaeta 34 700 29192 31142 ~iQ2Y~y1 int(mgi~ bithQgl~en~ Yi(gDsect ~Q(~i~Y m~DilgDsecti~ bimDQamp~1h(sect sp ~2(QQhiY slmQD 2poundQiiQlsD ~sD~g~nsecti Chironomid larvae
36 18 16 17
100 16
3
1000 600 800 700
1000 800 300
30910 15455 13738 14596 85860 13738 2576
157BO 20953 10078 14621 32126 10861 4147
Mean number of organismssample 342 Standard deviation 97
2Mean nUllber 0 f organlsms m 293641 Standard deviation 83617
H= 262 SD= 079 SR= 095 J= 083
A-49
Appendix B--Sediment particle size and organic content of the Cathlamet Bay
benthic invertebrate sites 13 March through 14 September
1984
iii
1
Station 18a 48 54 57
Survey 1 1 1 1
Month March March March March
Day 13 13 13 13
Particle size (mm) Phib Percent by weight
gt 40 -2 000 000 000
20- 40 -1 000 000 000
10- 20 0 000 009 000
05- 10 1 018 1079 032
025- 050 2 545 7583 2468
0125- 025 3 8731 1225 6783
00625-0125 4 491 037 657
lt0625 (5-12) 216 067 060
Organic Content 160 116 128
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
b Phi= -log2(sediment particle diameter in mm)
B-1
Station 18a 48 54 57
Survey 2 2 2 2
Month April April April April
Day 5 5 5 5
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 003 093 000
05shy 10 1 005 31 75 023
025shy 050 2 087 5904 2368
0125- 025 3 6316 750 7155
00625-0125 4 3056 026 427
lt0625 (5-12) 533 052 028
Organic Content 081 077 065
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-2
Station 45 55 58
Survey 3 3 3 3
Month April April April April
Day 18 18 18 18
Particle size (mm)
gt 40
Phi
-2
Percent by weight
000 000 000
20shy 40 -1 000 000 000
10shy 20 0 005 009 004
05shy 10 1 010 027 013
025shy 050 2 015 095 225
0125- 025 3 097 536 6111
00625-0125 4 453 2821 2205
lt0625 (5-12) 9420 6511 1442
Organic Content 31 42 14
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-3
Station 18a 45 55 58
Survey 4 4 4 4
Month May May May May
Day 4 4 4 4
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 021
05shy 10 1 000 065 063
025shy 050 2 012 370 230
0125- 025 3 091 4099 4696
00625-0125 4 322 3650 3052
lt0625 (5-12) 9575 1810 1939
Organic Content 330 180 160
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-4
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
5
May
17
000
000
005
016
217
5862
2729
1170
100
45 55 58
5 5 5
May May May
17 17 17
Percent by weight
000 000
000 000
005 008
113 031
325 274
1903 5613
2784 2401
4870 1672
240 110
000
000
000
010
020
079
397
9494
390
B-5
Station 18al 45 55 58
Survey 6 6 6 6
Month June June June June
Day 6 6 6 6
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 020
05shy 10 1 005 051 027
025shy 050 2 005 301 1 79
0125- 025 3 074 3189 5404
00625-0125 4 599 4118 2885
lt0625 (5-12) 9317 2332 1485
Organic Content 340 240 150
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-6
Station
Survey
Month
Day
Particle size Cmm) Phi
gt 40 -2
20shy 40 -1
10shy 20 a
05shy 10 1
025shy 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
7
June
18
000
000
005
029
138
3917
4143
1768
180
45
7
June
18
55 58
7 7
June June
18 18
Percent by weight
000
000
000
010
020
080
427
9464
310
000 000
000 000
000 007
011 022
057 190
957 5286
3023 2642
5957 1853
1 70 110
B-7
Station 18al 45 55 58
Survey 8 8 8 8
Month July July July July
Day 2 2 2 2
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 006 002 006
05shy 10 1 006 0l3 023
025shy 050 2 017 088 171
0125- 025 3 074 2712 5365
00625-0125 4 552 3892 3081
lt0625 (5-12) 9345 3294 l354
Organic Content 410 210 160
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-8
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
9
July
17
000
000
003
013
130
4294
4434
1127
130
45
9
July
17
Percent
000
000
000
006
012
051
046
9885
290
55
9
July
17
by weight
000
000
019
048
091
628
3616
5597
030
58
9
July
17
000
000
004
022
158
5017
3148
1650
140
B-9
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18al
10
August
1
45
10
August
1
55
10
August
1
58
10
August
1
Percent by weight
000 000
000 004
001 004
009 018
018 088
098 306
049 2510
9824 7070
000
005
045
763
3604
4495
932
156
100 190 060
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-10
Station 18 45 55 58
Survey 11 11 11 11
Month August August August August
Day 17 17 17 17
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000 000
20- 40 -1 005 000 000 000
10- 20 0 021 003 000 210
05- 10 1 064 009 000 159
025- 050 2 226 027 045 2656
0125- 025 3 3259 131 712 3719
00625-0125 4 4327 195 1737 1159
lt0625 (5-12) 2098 9635 7506 2097
Organic Content 210 300 160 100
Ii I
B-11
Station
Survey
Month
Day
Particle size (mm) Phi
gt40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
12
August
29
000
000
012
046
186
3465
4498
17 93
241
45
12
August
29
55 58
12 12
August August
29 29
Percent by weight
000
000
002
009
026
118
189
9656
540
000 000
000 000
003 011
011 028
055 1013
859 5033
1596 1827
7476 2089
1 70 120
B-12
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
_-------------------- shy
B-13
STATION 18 Date 13 March 1984 Depth 46 m Salinity (bottom) 11 ppt Temperature (bottom) 67 C No of samples 15
Frequency Density (nom 2 ) Total occurrence
Taxa number (7) X SD
Nemertea 2 67 1145 4434 Nematoda 134 1000 76702 33169 Turbellaria 22 667 12593 15854 ~~n~b~~ imnpoundQ 31 Oligochaeta 486
933 17744 1468 1 100() 278186 138779
~QtQif~12 mnil~nsectisect 24 Ostracoda 39
933 13738 8462 800 22324 17715
~Q[QQbiYm ~lmQni~ 74 867 42358 38B70 EQntQIH~i2 Qyi 1 EQri gnQQn 1 Harpacticoida 7
67 572 2217 67 572 221 7
333 4007 7159 Insecta 2 67 1145 4434 Chironomid larvae 20 667 1144 B 10090 Collembola 95 867 54378 82588 Hydracarina 1 67 572 221 7
Mean number of organismssample 626 Standard deviation 19 1
M ean num b er 0 f 2organIsms III 537484 Standard deviation 163579
H= 237 so= 069 SR= 1 42 J= 061
A-l
STATION 48 Date 13 March 1984 Depth 107 m Salinity (bottom) 05 ppt Temperature (bottom) bB C No of sampl es 15
Frequency Densi ty (nom 2 ) Total occurrence
Taxa number (7) X SD
Nemertea 31 6b7 17744 1849 1 Nematoda 38 667 21751 22685 Oligochaeta 4 133 2290 6859 ~QQpound12 2nil~nsectisect 31 Ostracoda 1
667 17744 29648 67 572 221 7
~Q9~~[~ spp 1 ~Q[Q2l ~~lQnisect 1 ~Q2sectiQisect sectisect 4 Harpacticoida 1
67 572 2217 67 572 221 7
200 2290 5097 67 572 221 7
Insecta 2 133 1145 3021 Diptera adult 1 67 572 2217 Collembola 24 467 13738 30923
Mean number of organismssample 93 Standard deviation 59
Mean number of organismsm2 795b4 Standard deviation 50740
H= 255 SD= 079 SR= 1 55 J= 071
A-2
STATION 54 Date 14 March 1984 Depth 177 m Salinity (bottom) 00 ppt Temperature (bottom) 66 C No of samples 15
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nemertea 47 1000 26903 14096 Nematoda 7 267 4007 9102 Turbellaria 9 333 5152 1114B Oligochaeta 11 333 6296 10989 Gastropoda 1 67 572 2217 ~Q(Qi~Yl mnil~n2i~ Ostracoda
199 3
1000 200
11390B 171 7
97165 3555
gQ[Qehiy sectlmQnisect Harpacticoida
3 1
200 67
171 7 572
3555 221 7
Heleidae larvae 29 867 16600 10989 Chironomid larvae 2 133 1145 3021 Collembola 2 67 1145 4434
Mean number of organismssample 209 Standard deviation 103
2Mean number 0 f organIsms m 179734 Standard deviation 88247
H = 1 86 SD= 056 SR= 1 33 J= 052
A-3
STATION 57 Date 13 March 1984 Depth 91 m Salinity (bottom) 00 ppt Temperature (bottom) 63 C No of sampl es 15
Frequency Densi ty (no 81 2) Total occurrence
Taxa number (X) X SD
Nemertea 27 667 15455 13459 Nematoda 8 400 4579 6381 Turbellaria 4 200 2290 5097 Oligochaeta 8 400 4579 6381 ~g[gipound~l mnilui Ostracoda
1 1
67 67
572 572
2217 2217
~Qgml[a spp 1 67 572 2217 ~Q[Qeni~m lmQnisect Harpacticoida
2 1
133 67
1145 572
3021 221 7
Insecta 3 67 171 7 b651 Chironomid larvae 1 b7 572 221 7 Collembola 37 400 21179 65700 Hydracarina 1 67 572 221 7
Mean number of organismssample 63 Standard deviation 82
Mean number of organismsm2 54378 Standard deviation 70029
H= 253 SD= 075 SR= 1 83 J= 068
A-4
STATION 18 Date 5 April 1984 Depth 30 II
Salinity (bottoll) 00 ppt Temperature (bottom) 90 C No of samples 15
Frequency Densi ty (no1I 2) Total occurrence
Taxa number (i ) If S D
Nemertea 11 bOO 6296 6042 Nematomorpha 2 133 1145 3021 Nuatoda 119 1000 6811 6 50947 Turbellaria 20 600 11448 13640 ~~~nin~sect liIDni~Q12 Oligochaeta
33 481
1000 1000
18889 275324
10364 142326
~Q~Qi~Yl m2nil~ni2 23 600 13165 1371 7 Ostracoda 33 933 18889 10861 gQ(QQrriYID sect2mQnisectHarpacti coi da
38 7
933 133
21751 4007
13329 13328
Chironomid larvae 16 667 9158 8868 ColI embola 1 67 572 2217
Mean number of organismssample 523 Standard deviation 227
M b f 2ean num er 0 organIsms m 448762 Standard deviation 194508
H= 202 SD= 059 SR= 114 J= 0S6
A-5
STATION 45 Date 18 April 1984 Depth 64 III
Salinity (bottom) 00 ppt Temperature (bottom) 95 C No of samples 15
Total Frequency occurrence
Density (noI 2 )
Taxa number (X) X SD
Nematoda 171 1000 97890 92277 tyg~ sp Turbellaria
1 29
67 600
572 16600
221 7 23506
H~nng~ imDi~g tQQsectQl fg~ig Oligochaeta ~Q[Qi~Y2 m2niD~i Ostracodamiddot
9 41
367 42
100
400 1000 1000 800
1000
5152 23469
210071 24041 57240
781 5 13563
100542 19254 43134
~Q[Qeniym amQnisectHarpacticoida Heleidae larvae
37 2049
1
933 1000
67
21179 117284B
572
189B5 616612
221 7 Chironomid larvae 3 200 171 7 3555 Collembola 1 67 572 221 7 Insect parts 1 67 572 221 7
Mean number of organismssample 1901 Standard deviation 864
b f 2nean num er 0 organIsms m 1632485 Standard deviation 741931
H = 1 52 SD= 046 SR= 1 13 J= 040
A-6
STATION 18 Date 18 April 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom) No of samples 15
Frequency Density (nom2) Total occurrence
Taxa nueber (X) x s D
Nemertea 13 533 7441 9663 Nematomorpha 3 200 171 7 3555 Nematoda 195 1000 111618 63675 Turbell ari a 9 467 5152 6326 ~~ni~~ i~ni~Ql~ 30 867 17172 129B1 Oligochaeta 580 1000 331992 108880 ~QC~i~Ml~ m~nil~n~isectOstracoda
28 18
1000 667
16027 10303
11179 10364
~Q[Q~~iYm sect~Qni2 sect~ci~ gniQQnHarpacticoida
105 1
17
1000 67
400
60102 572
9731
25553 2217
19970 Chironollid larvae 16 667 9158 8B6B
Hean number of organismssample 677 Standard deviation 199
M ean num b I 2er 0 f organIsms AI 580986 Standard deviation 171095
w = 202 SD= 062 SR= 1 10 J= 056
95 C
A-7
STATION 58 Date 18 April 1984 Depth 67 m Salinity (bottom) 00 ppt Temperature (botto) No of samples 15
Frequency Density (nom2) Total occurrence
Taxa number (~) X SD
Nemertea 62 933 35489 26338 Nematoda 224 1000 128218 49903 Turbellaria 9 600 5152 4354 ~nt~sect imni~Q Oligochaeta
1 79
67 1000
572 45220
2217 23506
bnQgYRhY~ Yi~~nE ~Q(~i~Y nil~ni Ostracoda
2 10 19
67 533 600
1145 5724
10876
4434 6214
10989 ~Q[QeniY sectQOiHarpacticoida
30 2
B67 133
17172 1145
12142 3021
Heleidae larvae 6 333 3434 5430 Chironomid larvae 9 400 5152 7B1 5 Chironomid pupae 2 133 1145 3021
Mean number of organismssample 303 Standard deviation 94
I 11 ean num ber 0 f organlsms 2 260442 Standard deviation 81043
H= 233 SO= 070 SR= 1 36 J= 063
97 C
A-B
Frequency Density (nolm 2) Total occurrence -----------------
Taxa number (7) X SD
Nemertea 16 467 9158 10989 Nematoda 266 1000 152258 54541 Turbellaria 23 600 13165 15518 ~l~nH ~Q~iQH 2 133 1145 3021 Oligochaeta 181 1000 103604 56532 bi~hQg~Qn~~ ~it~l~ ~QtQifg mli~lsectisectOstracoda
3 59 15
200 1000 733
1717 33772 8586
3555 23054
7256 ~Q[QQhiY HmQtlsect ~Q[QehiYm sect21tlfQ[lg EQlQQQt~i hQ~i
466 3 1
1000 200 67
266738 171 7 572
75094 3555 221 7
Harpacticoida 30 400 17172 40402 Chironomid larvae 10 533 5724 6214
Mean number of organismssa_pIe 717 Standard deviation 143
I 2Mean number 0 f organlsms m 615330 Standard deviation 122532
H= 226 SO= 072 SR= 119 J= 061
STATION 55 Date 18 April 1984 Depth 30 1ft
Salinity (bottom) 00 ppt Temperature (bottom) 93 C No of SaIIples 15
A-9
STATION 45 Date 4 Hay 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 103 C No of samples 10
Frequency Density (noI2) Total occurrence ---------------- shy
Taxa number (Xl X SD
Neutoda 269 1000 230963 167296 Turbellaria 1 100 859 2715 ~u~yuti Q~iQ ~Ub imni~Q
1 2
100 100
859 171 7
2715 5430
j2~Qn flec Oligochaeta
28 169
BOO 1000
24041 145103
19326 74351
~igeYk~ll iulCIDai ~Q(Qi~Y uini Ostracoda
32 4 5
aoo 400
400
27475 3434 4293
22463 4434 6071
biQQ~~tbt sp ~e(QQbYm mQoi sectampQeD ~nQDisect Chironomid larvae
25 2
578 2
900 200
1000 200
21465 1717
496271 171 7
15279 3620
293820 3620
Mean number of organismssample 111 8 Standard deviation 522
11 b f I 2ean num er 0 organIsms m 95991 5 Standard deviation 447842
H= 193 SD= 065 SR= 118 J= 052
A-10
STATION 18 Date 4 Hay 1984 Depth 34 II
Salinity (bottom) 00 ppt Temperature (bottom) 104 C No of saMples 10
Frequency Density (noI 2 ) occurrence ----------------shy
Taxa (X) X SD
Nemertea 10 600 8SB6 10709 Nuatoda 153 1000 131366 47899 Turbellaria 8 600 6869 6773 ~n1b limnpoundQl Oligochaeta
11 147
700 1000
middot9445 126214
9449 6231 7
~i~g~kXl in1(m~i ~g(2iY OiOi Ostracoda
86 4 1
900 300 100
73840 3434 859
61543 6003 2715
bimoQpoundx1b( sp ~2(QQbiYm mgoiDi ptera adult
3 57
3
300 900 300
2576 48940
2576
4147 21815 4147
Chironomid larvae 4 300 3434 6003 Chironomid pupae 1 100 859 2715
Hean nUMber of orQanismssample 489 Standard deviation 160
b f 2nean nUll er 0 organIsms II 418997 Standard deviation 137721
H= 243 SD= 076 SR= 1 34 J= 066
A-l1
STATION 5B Date 4 Hay 1984 Depth 61 bull Salinity (botto~) 00 ppt Temperature (bottom) 110 C No of suples 10
Frequency Density (nom 2) Total occurrence ---------------- shy
Taxa number (X) X SD
Neertn 41 1000 35203 21206 Nematoda 211 1000 181165 53305 Turbellaria 4 200 3434 7240 Oligochaeta 89 1000 76415 32240 ~i~2~~~11~ iU1(~i~bi1begygny YitQ ~e(biYl ~OiDi OstracDda
4 3
20 1
400 200 BOO 100
3434 2576
17172 859
4434 5795
19829 2715
biue~1bt~ sp ~2(egniY Imeoi sectg11g1O OdD Helei dae larvae
5 32
1 1
400 900 100 100
4293 27475
859 859
6071 18010 2715 2715
Chironomid larvae 7 400 6010 9096
Mean number of organismssample 419 Standard deviation 93
b f 2ean nUll er 0 organIsms m 359753 Standard deviation 79875
H= 221 SD= 068 SR= 138 J= 060
A-12
Frequency Density (nolm 2) occurrence -----------------
Taxa (X) X SD
Nemertea 23 900 1974S 15171 Neutollorpha 1 100 859 271 5 Nellatoda 269 1000 230963 69923 Turbellaria 10 600 8586 991 4 ~~xYnki Q~ampiQ 4 300 3434 6003 ~nb limnipoundQl Oligochaeta
1 79
100 1000
859 67829
2715 40363
~i~Q~kXl io[~i biDe9XQDX ~i[~OBi valvi a
11 3 1
800 300 100
9445 2576 859
6335 4147 271 5
~Q[~poundY mnil~n bimoQampXD[ sp ~Q[QabiY lQO Harpacticoida
18 2
159 1
700 200
1000 100
15455 171 7
135659 859
13904 3620
54272 2715
Chironomid larvae 2 200 171 7 3620 Trichoptera larvae 1 100 859 2715
STATION 55 Date 4 May 1984 Depth 21 m Salinity (bottom) 00 ppt Temperature (bottom) 107 C No of suples 10
Mean number of organismssamples 594 Standard deviation 147
Mean number of organismsm2 501422 Standard deviation 126525
H= 219 aD= 069 SR= 1 63 J= 055
A-13
STATION 45 Date 17 May 1984 Depth 61 m Sal i ni ty (bottom) 01 ppt Temperature (bottom) 121 C No of sampl es 10
Frequency Total occurrence
Taxa nUlllber (7)
NelDertea 1 100 859 2715 Nematoda 163 1000 139952 127996 Polychaeta 1 100 859 2715 ~~~n~h~ imni~Qs Hobsonia florida
2 6
200 600
171 7 5152
3620 4434
Oligochaeta 329 1000 282479 13291 8 ~~lQQYsectk~~12 in~~rmQi 57 900 48940 33142 ~Qr~ipound~2 ffi2niDi 6 500 5152 6003 Ostracoda 5 200 4293 10898 bimDg~yth( SPa 13 600 11162 12176 ~Q(Qebi~m sectQDisect Harpacticaida
2 2
200 100
1717 1717
3620 5430
2poundQttQD poundDQDsectisectDiptera adult
296 1
1000 100
254146 859
172633 271 5
Mean number of organismssample 884 Standard deviation 326
b f I 2nean num er 0 organlss m 759002 Standard deviation 280131
H= 209 SD= 071 SR= 1 33 J= 055
A-14
STATION 18 Date 17 May 1984 Depth 30 m Salinity (bottom) 00 ppt Temperature (bottom) 122 C No of samples 12
Frequency Density (nom2) Total occurrence -----------------
Taxa number (X) X SD
Nematoda 50 833 35775 22815 ~ntb limnipoundQl 3 Oligochaeta 97
250 833
2147 69404
3883 48495
~igQ~~k~ intr~ 27 ~QrQipoundY mnin~i~ 5
667 333
19319 3S7S
19068 5740
Ostracoda 1 83 716 2479 bimnQpound~nr sp 5 ~Q(Q~bY ~mQni S4 ~Q(Q~niY ~QinipoundQ(n 3
333 833 250
3578 60102
2147
5740 43780 3883
fgnQ2Q(i bQ~i 1 sectpoundQtgO poundnQn~i 2 Chironomid larvae 4
83 167 250
716 1431 2862
2479 3342 5592
Mean number of organismssample 235 Standard deviation 116
nean nURl b er 0 f organlslls II 2 201771 Standard devi ati on 99221
H= 236 SD= 075 SR= 1 35 J= 066
A-15
STATION 58 Date 17 May 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) 123 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nemertea 2 100 171 7 5430 Nematoda 75 1000 64395 34404 ~~2Qih~a limQi~Q 2 200 171 7 3620 Oligochaeta 60 1000 51516 33376 ~~igQY~~~12 iQ~[~~gi 2 200 171 7 3620 bitQQ9~Bh~sect Yr~Qsect 3 200 2576 579~
gQ[Qi~Yl ID2Dil~nsectisect Ostracoda
6 6
500 400
5152 5152
6003 8295
binQ~~nr[ sp gg[QQOYm mQQsect sect~QttQn 5n2Q~nsectia Chironomid larvae
2 34
1 1
200 1000
100 100
171 7 29192
859 859
3620 12927 271 5 2715
Mean number of organismssample 194 Standard deviation
2Mean nurn ber 0 f organIsms fA 166568 Standard deviation 56259
H= 225 SD= 072 SR= 1 45 J= 063
A-16
66
STATION 55 Date 17 May 1984 Depth 24 II
Salinity (bottom) 00 ppt Telllperature (bottom) 126 C No of samples 10
Total Frequency occurrence
Taxa nUllber (X) X SD --------------------------------------------------------------~-----------
Nematollorpha 2 200 171 7 3620 Nematoda 63 1000 54092 35297 Oligochaeta 94 1000 80708 44004 ~~iQQY~k~~l iQt~(m~Qi bitnQg~Qh~~ Yi[~Q gQ[QipoundY~ mni~Q~i Ostracoda
10 9 4 2
600 800 300 100
8586 7727 3434 171 7
9050 4874 6003 5430
bimnQ~~ln~[e sp ~Q(QQbiYm mQD ~Q[QQbiYm 2inipoundQ[n~ Chironomid larvae
6 142
3 1
600 1000 200 100
5152 121921
2576 859
4434 50682 5795 2715
Mean number of organismssample 336 Standard deviation 62
2Mean num ber 0 f organisms m 288490 Standard deviation 53421
H= 214 SD= 071 SR= 119 J= 062
A-17
STATION 45 Date 1 June 1984 Depth 61 m Salinity (bottom) 01 ppt Temperature (bottom) 139 C No of samples 10
Total Frequency occurrence
Density (no2)
Taxa nUllber (1) X SD
Nematoda 174 900 149396 132347 Turbellaria 5 200 4293 10898 ~~~QiQ~sect tmQtpoundQ~ ~QQsectQ flQi~sect Oligochaeta ~~iQQysecttygl~ iQl~rm~~i2 ~Q[Qi~~l~ ~~DilgDsectisect Ostracoda
5 20
190 103
12 5
400 900
1000 900
60 (I 400
4293 17172
163134 88436 10303 4293
6071 8095
92563 51524 11304 6071
bimnQpoundytng[ sp ~gQmYsectisect IDg[pound~Qisect ~Q[QQhi~m sectlmQDisect sectpoundQtiQlsectQ pound~Qgsectisect ChironQmid larvae
33 1
10 375
2
900 100 700
1000 200
28334 859
8586 321975
171 7
17196 2715 7010
179201 3620
Mean number of organismssample 935 Standard deviation 254
nurn b 0 f 2lean er organlsms m 802791 Standard deviation 218423
H= 239 SD= 075 SR= 1 22 J= 065
A-18
STATION 18 Date 1 June 1984 Depth 30 AI
Salinity (bottom) 00 ppt Temperature (bottom) 134 C No of samples 11
Frequency Density (no 1m2)
Taxa Total number
occurrence (X)
---------------- shyX SD
Turbellaria 14 636 10928 1157 7 ~~~Qltlg~ ilipoundQ~ Oligochaeta
10 178
727 1000
7805 138937
601 6 67913
~~iQQy~tY~l~ ill~[m~Qi~ 122 636 95227 93619 ~Q[Qipound~ l~i~lsectisect Ostracoda
7 1
455 9 1
5464 78 1
6946 2589
billQylhg[ Spa 16 818 12489 10420 GQ[QQQil HQi~ 139 1000 108496 70934 gQ[Qebi secteiifQ[~ sectQiiQi2 ~Q~sectisect Diptera pupae
1 2 1
9 1 182
11 1
781 1561 781
2589 3473 2589
Chironomid larvae 2 182 1561 3473
Mean number of organismssample 714 Standard deviation 284
nean num b er 0 f organlsms m 2 612728 Standard deviation 244249
H= 232 SD= 075 SR= 1 25 J= 063
A-19
STATION 58 Date 1 June 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 138 C No of samples 10
Frequency Density (noI 2 ) Total occurrence
Taxa number (X) X SD
Nematoda 173 1000 148538 47383 Turbellaria 3 300 2576 4147 Oligochaeta 53 1000 45506 32139 ~giQgY2k~g~ ini~[m~Qi~ bQg91YehY2 Yi[~nsect ~Qr~i~Yl m~nl~n~i
26 1
10
600 100 500
22324 859
8586
3391 2 2715
13424 bimnQpound~Q~[ sp ~Q9~m[Y poundgnitYpoundQlysect ~QtQehiYm ~lQni
4 1
46
200 100
1000
3434 859
39496
8295 2715
22243 Chironomid larvae 1 100 859 271 5
Mean number of organismssample 318 standard deviation 103
M b f I 2ean num er 0 organlsms III 273035 Standard deviation 88842
H = 1 99 SD= 065 SR= 1 08 J= 060
A-20
STATION 55 Date 1 June 1984 Depth 27 m Salinity (bottom) 00 ppt Temp era t u r e (b 0 t tom) 140 C No of samples 10
Frequency Density (nom 2 ) Total occurrence
Taxa nueber (X) X SD
Nematoda 157 1000 134800 69524 Turbellaria 9 400 7727 13696 tlHl~lk ~2~~iQH 1 100 859 2715 Oligochaeta 49 1000 42071 32745 ~~iQQysect~gl~ S[l9sect bHbQghQb~~ Yirl~
10 1
400 100
8586 859
12799 2715
tQ[Qpoundls l2lilUsect bilQHSbg[ sp ~QrQQbil nllQisectHarpacticoida
4 7
134 1
400 500
1000 100
3434 6010
115052 859
4434 7069
44742 271 5
sectpoundQUQlls poundsQgn~sect Chironomid larvae
1 1
100 100
859 859
271 5 2715
Hydracarina 1 100 859 2715
Hean number of organismssample 376 Standard deviation 132
M b f 2ean num er 0 organIsms m 322834 Standard deviation 113127
H= 202 SD= 068 SR= 1 40 J= 055
A-21
STATION 45 Date 18 June 1984 Depth 67 m Salinity (bottom) 01 ppt Temperature (bottom) 149 C No of samples 10
Frequency Density (nom2)
Taxa Total nUllber
occurrence ex) i SD
Nematoda 109 1000 93587 3891 7 Turbell ari a 3 200 2576 5795 ~g~tbg limoipoundQl Q~Qni2 fQ(i~2 Oligochaeta ~gigQ~~Y inl[ggi ~Q[QiSY2 moilo Ostracoda
3 2
194 44
7 3
200 200
1000 1000 200 200
2576 171 7
16656B 37778 6010 2576
5795 3620
118364 36020 12831 5795
bimoQampl~n~[2 sp ~Q[QQbiYm lmgoi Harpacticoida sectpoundQQ1202 pound2022Osect Chironomid larvae
68 1 1
113 2
900 100 100
1000 200
58385 859 859
97022 171 7
97627 2715 2715
73976 3620
Mean number of organismssa_pie 550 Standard deviation 371
Mean nUll ber 0 f organIsms 2II 472230 Standard deviation 318519
H= 242 SD= 077 SR= 1 32 Ja 065
A-22
STATION 18 Date 18 June 1984 Depth 34 m Salinity (bottom) 00 ppt Temperature (bottom) 155 C No of samples 10
Frequency Density (nom 2) Total occurrence ----------------shy
Taxa nUlber (Z) X SD
Neutoda 291 1000 249853 138826 Turbellaria 1 100 859 2715 ~~n~~nki~ sectQ~~iQ~2 ~g~ntbg2 limni~Q9 Oligochaeta
1 3
123
100 300
1000
859 2576
105608
271 5 4147
48240 ~~igQY~~~~9 int~(mgii ~Q[~i~~~ mini~ni bimnQ~ylbg(~ Spa
67 6 5
1000 500 400
57526 5152 4293
40485 6003 6071
~Q(QebiYm ~imQnisect Harpacticoida
80 2
1000 200
68688 171 7
41276 3620
sect~QttQini ~2nig~n~i Chironomid larvae
2 4
200 300
171 7 3434
3620 6003
Mean number of organismssample 585 Standard deviation 194
I 2Mean urn b er 0 f organIsms m 502281 Standard deviation 166943
H= 203 SD= 068 SR= 1 20 J= 057
A-23
STATI ON 58 Date 18 June 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (noI 2) Total occurrence
TaKa number (X) X SD
Nellertea 2 100 1717 5430 Nematoda 160 1000 137376 6361 1 Turbellaria 4 400 3434 4434 Oligochaeta 36 1000 3091 0 14705 ~iQQYik~ Q1rQ 4 300 3434 6003 bitnQgl~ebysect YrDsect ~Q[QiY~ ~~nni biQQpoundY1h[ sp ~Q[Qeng ~ilQD Chironomid larvae
3 1 3
61 1
300 100 300
1000 100
2576 859
2576 52375
859
4147 2715 4147
1428 1 2715
Chironollid pupae 1 100 859 271 5
Mean number of organismssample 276 standard deviation 72
nean nurn b er 0 f organIsms I 2 236974 Standard deviation 61410
H = 1 78 SD= 060 SR= 1 23 J= 051
A-24
STATION 55 Date 18 June 1984 Depth 18 m Salinity (bottom)1 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (no 1m2) occurrence
Taxa (X) X SD
Nematoda 160 1000 137376 43967 Turbellaria 1 100 859 271 5 Oligochaeta 61 1000 52375 31985 ~~iQQY~kY~~ int~[mQi~ ~Q[Qipound~l~ m~nini~ biIDnQ~Ylb[s sp
3 3 3
300 300 300
2576 2576 2576
4147 4147 4147
~Q[Q~bi~ ~slIDQni~ Chironomid larvae
85 6
1000 600
72981 5152
34165 4434
Mean number of organismssample 322 Standard deviation 75
2Mean number 0 f organIsms m 276469 Standard deviation 64099
H= 178 5D= 065 SR= 0B4 J= 059
A-25
Frequency Density (no2) occurrence -----------------
Taxa (7) X SD
Nematoda 104 1000 89294 47409 Turbell ar i a 1 100 859 2715 ~~~nQ~sect imni~Q~ tjQQsectQlis flQig~ Oligochaeta
2 1
297
100 100
1000
171 7 859
255004
5430 271 5
146273 ~~i~QYsect~Y~lls ilr2is gQrQi~y~ IDDilDia
24 4
600 300
20606 3434
27212 6003
Ostracoda 2 200 171 7 3620 biDQSy~b~C~ sp M~QYsectisect m~r~~Qi ~QrQeniy QD Harpacticoida
157 1 1 1
900 100 100 100
134800 859 859 859
73197 2715 2715 2715
sectpoundQttQDs SsDQD 113 900 97022 61656
STATION 45 Date 2 July 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) No of samples 10
172 C
Mean number of organismssample 708 Standard deviation 339
M ean num b er f 20 organisms 607889 Standard deviation 290B22
H= 216 SD= 073 SR= 1 27 J= 058
1-26
STATION 18 Date 2 July 1984 Depth 24 WI
Sal inity (bottom) 00 ppt Temperature (bottom) 172 C No of samples 10
--------------------------------~-----------------------------------------Frequency Density (nom2)
Total occurrence Taxa number (7) X SD
Nematoda 202 1000 173437 113532 ~~~nih~sect mnpoundQ~ Oligochleta
4 102
400 1000
3434 87577
4434 54873
~~igQYsect~Y~12 inl~rmgi2 ~Q[~poundYl~ m~ni~nsectisect bimnQpoundylh~[~ Spa
115 4
15
900 300 900
98739 3434
12879
100720 6003 9274
~Q[QQniY~ sect~QDi~ 55 900 47223 40525 Harpacticoida 1 100 859 2715 sectpoundQiiQlD SDg~DEisect Chironomid larvae
2 6
200 400
1717 5152
3620 7240
Hymenoptera 1 100 859 2715 Hydracarina 1 100 859 2715
Mean number of organismssample 508 Standard deviation 253
2Mean num ber 0 f organIsms m 436169 Standard deviation 217580
H= 225 SD= 074 SR= 1 22 J= 063
A-27
STATION 58 Date 2 July 1984 Depth 58 1
Salinity (bottom) 00 ppt Temperature (bottom) IBO C No of samples 10
Frequency Density (no2) Total occurrence
Taxa number ltX) i SD
Nematoda 151 1000 129649 42729 Turbellaria 1 100 859 2715 01 i gochaeta 41 1000 35203 22698 ~~i~e~~~ int~~m~~ 3 200 2576 5795 btbQglYRhY~ Yir~n~ ~e~~ampy mni~niii bimQeamp~tb~ sp ~e~eQhiY ~mQni Chironomid larvae
1 4 2
68 1
100 300 200
1000 100
859 3434 171 7
58385 859
271 5 6003 3620
1557 1 2715
Mean number of organisassample 272 Standard deviation
I 2Mean num ber 0 f organIsms I 233539 Standard deviation 62546
H = 1 69 SD= 061 SR= 099 J= 053
A-28
73
STATION 55 Date 2 July 1984 Depth 15 III
Salinity (bottom) 00 ppt Temperature (bottom) 182 C No of samples 10
Frequency Density (nom2) occurrence
Taxa (X) X SD
Nematoda 184 1()00 157982 5264B Turbellaria 1 100 859 271 5 Oligochaeta ~~iQQ~sect~Y~ll~ n~[~~Qi~ bitnggYQDYsect Yi[~nsect ~QrQipoundM2 m2ni~nsectisect bimnQpoundYn~[2 sp ~QrQQhiM Qni Harpacticoida
91 2 1 B 2
96 2
1000 200 100 500 200
1000 200
78133 171 7 859
6869 171 7
82426 1111
26058 3620 271 5 1890 3620shy
25980 3620
ChirDnomid larvae 5 400 4293 6071 Chironolllid pupae 1 100 859 2715
Mean number of organismssample 393 Standard deviation 53
2t1ean nUllber Df organlsms III 337430 Standard deviatiDn 45080
H= 187 SD= 067 SR= 116 J= 054
A-29
STATION 45 Date 17 Jul y 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (X) X SD
Nematoda 215 1000 184599 45837 ~~n~b~~ imDipoundQ Qe~Qni fllHi2
3 1
300 100
2576 859
4147 2715
Oligochaeta 305 1000 261873 147955 ~~iQQY~k~ in~rm~2i ~Qr~ipoundYl IDniln~i~ Ostracoda
17 1 2
500 100 200
14590 859
171 7
22554 2715 3620
bmnQpound~ihr sp ~QCQQhiY ~lQD~
176 1
1000 100
151114 859
57125 2715
Harpacticoida 4 300 3434 6003 sectQ~~Qn poundnQnai~ Chironomid larvae
91 5
1000 400
78133 4293
61310 6071
Mean number of organismssample 821 Standard deviation 275
M b f 2ean num er 0 organlsms m 70491 1 Standard deviation 236369
H= 215 SD= 073 SR= 114 J= 060
A-30
STATION 18 Date 17 Jul y 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom 203 C No of samples 10
Frequency Density (001 2 Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 339 1000 291065 119140 Turbellaria 3 200 2576 5795 ~~2~b~~ limnipoundQ12Oligochaeta
4 18S
300 1000
3434 161417
6003 89393
~~iQQy~~~ls in~(ID~Qi bim~Qampy~bg(2 Spa
34 16
800 700
29192 1373B
22967 15252
~g(gebi~m ~21mQni2 Harpacticoida
52 3
1000 200
44647 2576
25212 5795
2ampQ11Q1202 ampS02Qg~2i2 Chironomid larvae
18 10
700 700
15455 8586
13904 701 0
Mean number of organi$mssample 667 Standard deviation IBB
H ean nurn b er 1 20 f organIsms m 572686 Standard deviation 161750
H = 1 99 SD= 065 SR= 090 J= 060
A-31
STATION 58 Date 17 July 1984 Depth 55 AI
Salinity (bottom) 00 ppt Temperature (bottom) 197 C No of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nellatoda 173 1000 14853B 66390 Turbellaria 1 100 859 271 5 ~~~n~hu ini~QA Oligochaeta
1 46
100 1000
859 39496
2715 26293
~gipoundQy~~ygl2 in~rJg~i~ b1nQglYRnY~ Yi( Bivalvia
6 2 1
400 200 100
5152 1717 859
8295 3620 271 5
ei~ IDnH~n~i~ 2 200 171 7 3620 Ostracoda 1 100 959 271 5 biIDQHlh~( Spa ~Q(QRbim ~21Qnisect Diptera pupae
1 94
1
100 1000 100
859 80708
859
2715 35332 2715
Heleidae 1arvae 5 500 4293 4525 Chironomid larvae 1 100 859 2715
Mean number of organismssample 335 Standard deviatiDn 113
Mean number of organismsRI2 287631 Standard deviation 97413
H= 1 86 SO= 064 SR= 155 J= 049
A-32
STATION 55 Date 17 July 1984 Depth 18 m Sali nity (bottom) 00 ppt TeAlperature (bottom) 199 C No of samples 10
Frequency Density (nom2 ) occurrence
Taxa (X) x S D
Nematoda 61 1000 52375 33972 Turbellaria 1 100 859 2715 Oligochaeta 24 900 20606 11590 ~~i2QY~k~~1 iOi[2 bimDQ~xlb~r sp ~Q[QQhi~ sectgni~ Chironomid larvae
3 1
38 3
200 100
1000 300
2576 859
32627 2576
5795 2715
19326 4147
Mean number of organismssample 131 standard deviation 54
M b f 2ean num er 0 organIsms 112477 Standard deviation 46757
H= 184 SD= 066 SR= 085 J= 065
bull
A-33
STATION 45 Date 1 August 1984 Depth 58 m Sal i nity (bottoll) 03 ppt Temperature (bottom) 203 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa nUllber (X) X SD
Nematoda 145 1000 124417 52344 Turbellaria 1 100 859 2715 Mmth~sect iHpoundQ~ Q~~Qi ilQ[i9Oligochaeta
5 3
196
500 300
1000
4293 2576
168286
4525 4147
91064 ~igQYsect~~li int9i Ostracoda
2 3
100 300
171 7 2576
5430 4147
bimnQpoundtl sp ~Q[Q2hiY sectlQni~
240 6
1000 600
206064 5152
73526 4434
sectpoundQtQl poundngnai~Helei dae larvae
1862 1
1000 100
1598713 859
966134 271 ~
Mean number of organismssample 2464 Standard deviation 1156
211 ean num ber 0 f organIsms II 2115590 Standard deviation 992518
H= 124 SD= 041 SR= 089 J= 036
A-34
STATION 1S Date 1 August 1984 Depth 24 II
Salinity (bottom) 00 ppt Temperature (bottom) 198 C No of samp I es 10
Frequency Density (nom2) occurrence ---------------- shy
Taxa (X) X S D
Nuertea 1 100 859 2715 Nellatolllorpha 1 100 859 2715 Nematoda 248 1000 212933 108288 Turbellaria 4 400 3434 4434 ~untb~la Hli~g Oligochaeta
4 206
400 1000
3434 176872
4434 75309
~~igQYli~dli i[t~(gi~ ~QtQpound l binQ~ybt2 sp ~2l~bi Q[i ~2tlgtQ(ila tirisect sectpoundQtel poundl9lla Chironomid larvae
10 1
20 205
1 574
9
500 100 800
1000 100
1000 400
8586 859
17172 176013
859 492836
7727
10709 271 5
14021 48104
271 5 150531
13696
Mean number of organismssample 1284 Standard deviation 290
M b f I 2ean nurn er 0 organIsms III 1102442 Standard deviation 2488B5
H= 211 SD= 071 SR= 1 16 J= 057
A-35
STATION 58 Date 1 August 1984 Depth 55 m Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samp 1es 10
Frequency Densi ty _ ltnom2 ) Total occurrence
Taxa number (7) X SD
Nemertea 1 100 859 2715 Nematoda 22 900 18889 15036 Turbellaria 1 100 859 2715 Oligochaeta 19 700 16313 17385 biiQQgl~QhY~ YiCg~~ 2 200 171 7 3620 ~Q[~i~~l~ m2nil~n2i2 ~Q[QehiYm ~lmQni2
4 164
300 1000
3434 140810
6003 103048
Heleidae larvae 8 500 6869 8868
Mean number of organismssample 221 Standard deviation 111
I 2Mean num ber 0 f organIsms m 189751 Standard deviation 95391
H = L 37 SD= 043 SR= 090 J= 046
A-36
STATION 55 Date 1 August 1984 Depth 15 m Salinity (bottoll) 01 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (i ) X SD
Nemertea 1 100 859 2715 Neutoda 122 1000 104749 7394B Turbellaria 4 300 3434 6003 ~~~~~nt~ secte~poundQa~ Oligochaeta
1 118
100 1000
859 101315
2715 61223
~giQgY~k~~l iot~[m~Qi btbQg~2b~ Y[O ~grQipound~ ~nl~ni b~ngpound~tb~[ Spa
3 1 5 1
200 100 500 100
2576 859
4293 859
5795 2715 4525 2715
~Q[QebiYm ~mQoi sect~QttQ~ ~OQOi Heleidae larvae
42 2 2
800 200 100
36061 171 7 171 7
21341 3620 5430
Chironomid larvae 4 400 3434 4434
Mean number of organismssapIe 306 Standard deviation 169
M b f I 2ean nurn er 0 organIsms m 262732 Standard deviation 145101
H = 198 SD= 067 SR= 1 45 J= 054
A-37
~-- --------------~~-------------
STATION 45 Date 17 August 1984 Depth 61 1
Salinity (bottom) 10 ppt Temperature (bottom) 210 C No of samp 1es 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nematoda 240 1000 206064 130213 ~~h~sect limQ tjQ~~Hi~ fQ[i~~ Oligochaeta
31 2
245
400 100
1000
26617 1717
210357
75228 5430
121374 babgglYQbl~ Yi[~sect 1 100 859 2715 Ostracoda 1 100 859 271 5 biQ~xtb~[ Spa ~~Q~~isect ~[pound~Qisect ~Qgebi HQOi
333 2
143
1000 200
1000
28591 4 171 7
1227BO
106553 3620
106860 sectpoundQUg~ poundg~nsectisect 1738 1000 1492247 68441 7
Mean number of organismssample 2736 Standard deviation 944
M b f I 2ean num er 0 organlslls m 2349130 Standard deviation 810600
H= 172 SD= 056 SR= 079 J= 052
A-38
STATION 18 Date 17 August 1984 Depth 27 III
Sal i ni ty (botto) 01 ppt Temperature (bottom) 214 C No of samples 10
Frequency Density (nom 2 ) occurrence
Taxa (X) X SD
Nematoda 186 1000 159700 62468 ~tgt SPa 2 100 171 7 5430 Turbellaria 8 400 6869 8868 ~~ntbg2 imnipoundQ 12 700 10303 11304 Oligochaeta 283 1000 242984 90509 ~~iQQY~~Y~lls inlgtmggisBivalvia
4 1
400 100
3434 859
4434 271 5
~Qt~i~Y nilnsectisectbimnQpoundttbg[s SPa ~QtQQbi~ islmQDi2
1 17
286
100 900
1000
859 14596
245560
271 5 10747 83461
sectpoundetteln poundDsggnsectisect Chironomid larvae
526 4
1000 3Q0
451624 3434
179610 6003
Mean number of organismssapIe 1330 Standard deviation 162
Mean nurn ber I 20 f organIsms m 1141938 Standard deviation 139389
H= 214 SD= 073 SR= 1 06 J= 060
A-39
STATION 58 Date 17 August 1984 Depth 55 II
Salinity (bottom) 01 ppt Temperature (bottom) 220 C ND of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (7) x S D
Nematoda 68 1000 58385 27689 Turbellar i a 4 200 3434 8295 Oligochaeta 19 800 16313 13084 ~~i~Q~k~~l~ in~~[m~i bitUQ9Y2bYa Yi[~na Bivalvia
3 3 4
300 300 300
2576 2576 3434
4147 4147 6003
gQ[QipoundYl~ mnilDa 1 100 859 2715 binQpoundY~[ sp gQ[Q2UY a~mgnia sect~Qtgl~n ~n~~ni
2 338
6
100 1000 400
171 7 290207
5152
5430 56636 7240
Mean number of organismssample 448 Standard deviation 72
W b f 2lean num er 0 organlsms II 384653 Standard deviation 61988
H = 1 27 SD= 041 SR= 1 02 J= 038
A-40
STATION 55 Date 17 August 1984 Depth 18 m Salinity (bottom) 00 ppt Temperature (bottol) 223 C No of samples 10
Frequency Density (nom 2 ) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 291 1000 249853 118104 Turbellaria 1 100 859 2715 M~ntb~ mni~Q Oligochaeta
1 47
100 1000
859 40354
2715 28347
~~iQQ~sectkY~ll int~[m~gi bitbQQ1YSDY Yi(gn Bivalvia
25 12
6
900 500 400
21465 10303 5152
1231 0 18459 7240
~Q~2ipoundY mnil~ni Ostracoda
11 8
400 600
9445 6869
12442 6773
bmnQpoundYb~r~ SPa 52 1000 44647 19746 ~QrQsbY lmgnisectsQiielo snQ~ni~ Chironomid larvae
43 5
15
1000 400 BOO
36920 4293
12879
21436 6071 8344
Mean number of organismssample 517 Standard deviation 174
M b f I 2ean num er 0 organlsms m 443896 Standard deviation 149431
W = 228 SD= 065 SR= 1 33 J= 062
A-41
STATION 45 Date 29 August 1984 Depth 55 III
Salinity (bottom) 07 ppt Temperature (bottom) 199 C No of samples 10
Frequency Density (noI 2) Total occurrence
Taxa number (X) X SD
Nematoda 192 1000 164851 98380 ~sntbsect limnipoundQlDligochaeta
2 198
200 1000
171 7 170003
3620 67339
~Q[eipoundYls msniln~isect Ostracoda
1 4
100 400
859 3434
2715 4434
bimnQpoundytb[s Spa gQ[Qeniy sect21QOi~ sectpoundQttQlsO poundsOsggOi
164 87
2468
1000 1000 1000
140810 74698
2119025
39283 39460
840890
Mean number of organismssample 311 6 Standard deviation 101 1
ill b f 2nean nUll er 0 organIsms 2675398 Standard deviation 8682B8
W= 116 SD= 036 SR= 060 J= 039
A-42
STATION 18 Date 29 August 1984 Depth 30 bull Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samples 10
Total Frequency occurrence
Densi ty 2
(nom )
Taxa number (~ ) x S D
Nematoda 150 1000 128790 28905 Turbellaria 7 400 6010 9096 ~nh imni~Qj Oligochaeta ~~i~2Y~k~~1 ini~CIDgii bih2g~Qb~ Yi(~U2 Bivalvi a
B 145
1 1 2
600 1000
100 100 200
6869 124497
859 859
171 7
677 3 84732
271S 2715 3620
~Q[Qi~yli miDllgni bimn2pound~ih~C sp ~QtQehiY imQUia Harpacticoida
7 7
265 1
500 300
1000 100
6010 601 0
227529 859
8145 10747
139462 2715
sect~QtiQDi ~Q~Q~i~ Chironomid larvae
2471 2
1000 200
2121601 171 7
1063112 3620
Mean number of organismssample 3067 Standard deviation 121 9
2Mean number 0 f organIsms m 2633326 standard deviation 1046718
H = 1 09 SD= 034 SR= 1 04 J= 029
A-43
STATION 58 Date 29 August 1984 Depth 55 111
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (noI 2 ) Total occurrence -----------------
Taxa nUllber (X) X SD
Nemertea 4 400 3434 4434 Nuatoda 64 1000 54950 25016 Turbellaria 9 400 7727 11047 ~Hl~b limli~Q19 Oligochaeta
1 37
100 1000
859 31769
2715 19006
i~Qyh il(~~ bHtlQSlheln Yl Bivalvia
4 4
20
200 300 400
3434 3434
17172
8215 6003
26541 ~e(ijY l bQ~dlH sp
26 1
700 100
22324 859
25662 2715
~Q[QQhil iQ sectjgUell HD Heleidae larvae
418 20
1
1000 800 100
358895 17172
859
129443 12799 271 5
Mean number of organismssample 609 Standard deviation 175
nean num b er 0 f organIsms 1 111 2 522887 Standard deviation 150164
H= 176 SD= 051 SR= 1 30 J= 047
A-44
I I
I
I
STATION SS
Date 29 August 1984 Depth 21 1
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (no2) Total occurrence
Taxa nUllber (X) x S D
Nematoda ISO 1000 128790 37969 Turbellaria 1 100 859 271 5 Oligochaeta 48 1000 41213 16088 ~i~g~sect~~l iQ~~mgi bi~QQg~gb~sect ~i~nsect
10 14
600 600
eSB6 12020
9050 14137
Bivalvia 4 200 3434 7240 ~Q[Q~Yl niQaa Ostracoda
15 7
700 SOO
12879 6010
15806 7069
bmQg~~~b~ SPa 14 800 12020 8295 ~g[gaby mgni sect~g~~Qn ~ngnai Chironomid larvae
IB4 25 9
1000 900 700
157982 21465
7727
35563 16810 6335shy
Mean number of organismssample 481 Standard deviation B6
2Mean number 0 f organlsms m 412987 Standard deviation 74131
H= 24S SD= 074 SR= 1 23 J= 068
A-45
STATION 45 Date 14 September 1984 Depth 61 11
Salinity (bottom) 03 ppt Temperature (bottom) IB4 C No of samples 10
---------------------------------~----------------------------------------
Taxa TotalnUlllDer
Frequency occ~~~ence
Density (no 2) -----X-------sect7B
Nematoda 189 1000 162275 85233 t1tQ SPa
Turbellaria 2 2
200 100
171 7 171 7
3620 5430
~~~nIng limoifQl t1QQQDi~ flQriQ Oligochaeta
5 19
142
400 800
1000
4293 1631 3
121921
6071 12442 30504
~QQifYl mDl~D bimoQpoundt1hgr Spa Cumacea
19 184
2
800 1000 200
1631 3 157982
171 7
130B4 69541 3620
~Q[QnniYm ~~lmQDi Harpacticoida
118 1
1000 100
10131 5 B59
43367 2715
sectfQIIQD fOQgO Chironomid larvae
1780 1
1000 100
1528308 859
673586 2715
Mean number of organismssample 2464 Standard deviation 874
M ean num b er f 20 organlsms 2115590 Standard deviation 750305
H= 151 SD= 046 SR= 1 07 J= 041
A-46
STATION 18 Date 14 September 1984 Depth 21 III
Salinity (bottom) 01 ppt Temperature (botto) 182 C No of samples 10
Frequency DenSity (nom 2 ) Total occurrence ---------------- shy
Taxa nUlDber (i) X SD
Nemertea 1 100 859 271 5 Nematoda 186 1000 159700 44925 Turbellaria 16 400 13738 20717 ~~Dth~~ limni~Ql Oligochaeta
13 55
700 900
11162 47223
9096 30085
~Q~ei~Yl nil~Qi~ 17 900 14596 7069 bimDg~lbg[ Spa b 500 5152 6003 ~Q[Q2niY ~lgQi~ Harpacti coi da
562 2
1000 200
482533 171 7
136766 3620
sectpoundQttQ~Q~ ~n~ni 791 1000 679153 324290
Mean number of organismssample 1649 Standard deviation 447
I 211ean nUll ber 0 f organIsms I 1415831 Standard deviation 384136
H= 179 SD= 064 SR= 084 J= 054
A-47
STATION 58 Date 14 September 1984 Depth 58 III
Salinity (bottom) 01 ppt Temperature (bottom) 191 C No of sampl es 10
-------------------------------------------~------------------------------Frequency Density (nom 2 )
Total occurrence Taxa number eX) X SD
Nemertea 1 100 859 2715 Nematoda 55 1000 47223 18658 Turbellaria 10 500 8586 11448
1 100 859 2715 Oligochaeta 41 1000 35203 17850 ~~iQQ~~gll iu1g[m~i ~Q[Q~Yl nilD bimnQ~Y~h[ Spa ~Q[Q~hiYm lmgui sectpoundQilg1D poundU2D Chironomid larvae
4 10
2 277
23 4
100 500 200
1000 700 300
3434 8586 171 7
237832 19748 3434
10861 11448 3620
50561 21051 6003
Mean number of organismssample 428 Standard deviation 51
M b f 2ean num er 0 organIsms III 367481 Standard deviation 43743
H= 179 SD= 055 SR= 114 J= 052
A-48
I I
STATION SS Date 14 September 1984 Depth 21 II
Salinity (bottom) 01 ppt Temperature (bottom) 190 C No of samples 10
--------------------------------------------------------------------~-----
Frequency Density (no1I2) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 102 1000 87577 39200 Oligochaeta 34 700 29192 31142 ~iQ2Y~y1 int(mgi~ bithQgl~en~ Yi(gDsect ~Q(~i~Y m~DilgDsecti~ bimDQamp~1h(sect sp ~2(QQhiY slmQD 2poundQiiQlsD ~sD~g~nsecti Chironomid larvae
36 18 16 17
100 16
3
1000 600 800 700
1000 800 300
30910 15455 13738 14596 85860 13738 2576
157BO 20953 10078 14621 32126 10861 4147
Mean number of organismssample 342 Standard deviation 97
2Mean nUllber 0 f organlsms m 293641 Standard deviation 83617
H= 262 SD= 079 SR= 095 J= 083
A-49
Appendix B--Sediment particle size and organic content of the Cathlamet Bay
benthic invertebrate sites 13 March through 14 September
1984
iii
1
Station 18a 48 54 57
Survey 1 1 1 1
Month March March March March
Day 13 13 13 13
Particle size (mm) Phib Percent by weight
gt 40 -2 000 000 000
20- 40 -1 000 000 000
10- 20 0 000 009 000
05- 10 1 018 1079 032
025- 050 2 545 7583 2468
0125- 025 3 8731 1225 6783
00625-0125 4 491 037 657
lt0625 (5-12) 216 067 060
Organic Content 160 116 128
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
b Phi= -log2(sediment particle diameter in mm)
B-1
Station 18a 48 54 57
Survey 2 2 2 2
Month April April April April
Day 5 5 5 5
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 003 093 000
05shy 10 1 005 31 75 023
025shy 050 2 087 5904 2368
0125- 025 3 6316 750 7155
00625-0125 4 3056 026 427
lt0625 (5-12) 533 052 028
Organic Content 081 077 065
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-2
Station 45 55 58
Survey 3 3 3 3
Month April April April April
Day 18 18 18 18
Particle size (mm)
gt 40
Phi
-2
Percent by weight
000 000 000
20shy 40 -1 000 000 000
10shy 20 0 005 009 004
05shy 10 1 010 027 013
025shy 050 2 015 095 225
0125- 025 3 097 536 6111
00625-0125 4 453 2821 2205
lt0625 (5-12) 9420 6511 1442
Organic Content 31 42 14
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-3
Station 18a 45 55 58
Survey 4 4 4 4
Month May May May May
Day 4 4 4 4
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 021
05shy 10 1 000 065 063
025shy 050 2 012 370 230
0125- 025 3 091 4099 4696
00625-0125 4 322 3650 3052
lt0625 (5-12) 9575 1810 1939
Organic Content 330 180 160
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-4
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
5
May
17
000
000
005
016
217
5862
2729
1170
100
45 55 58
5 5 5
May May May
17 17 17
Percent by weight
000 000
000 000
005 008
113 031
325 274
1903 5613
2784 2401
4870 1672
240 110
000
000
000
010
020
079
397
9494
390
B-5
Station 18al 45 55 58
Survey 6 6 6 6
Month June June June June
Day 6 6 6 6
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 020
05shy 10 1 005 051 027
025shy 050 2 005 301 1 79
0125- 025 3 074 3189 5404
00625-0125 4 599 4118 2885
lt0625 (5-12) 9317 2332 1485
Organic Content 340 240 150
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-6
Station
Survey
Month
Day
Particle size Cmm) Phi
gt 40 -2
20shy 40 -1
10shy 20 a
05shy 10 1
025shy 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
7
June
18
000
000
005
029
138
3917
4143
1768
180
45
7
June
18
55 58
7 7
June June
18 18
Percent by weight
000
000
000
010
020
080
427
9464
310
000 000
000 000
000 007
011 022
057 190
957 5286
3023 2642
5957 1853
1 70 110
B-7
Station 18al 45 55 58
Survey 8 8 8 8
Month July July July July
Day 2 2 2 2
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 006 002 006
05shy 10 1 006 0l3 023
025shy 050 2 017 088 171
0125- 025 3 074 2712 5365
00625-0125 4 552 3892 3081
lt0625 (5-12) 9345 3294 l354
Organic Content 410 210 160
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-8
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
9
July
17
000
000
003
013
130
4294
4434
1127
130
45
9
July
17
Percent
000
000
000
006
012
051
046
9885
290
55
9
July
17
by weight
000
000
019
048
091
628
3616
5597
030
58
9
July
17
000
000
004
022
158
5017
3148
1650
140
B-9
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18al
10
August
1
45
10
August
1
55
10
August
1
58
10
August
1
Percent by weight
000 000
000 004
001 004
009 018
018 088
098 306
049 2510
9824 7070
000
005
045
763
3604
4495
932
156
100 190 060
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-10
Station 18 45 55 58
Survey 11 11 11 11
Month August August August August
Day 17 17 17 17
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000 000
20- 40 -1 005 000 000 000
10- 20 0 021 003 000 210
05- 10 1 064 009 000 159
025- 050 2 226 027 045 2656
0125- 025 3 3259 131 712 3719
00625-0125 4 4327 195 1737 1159
lt0625 (5-12) 2098 9635 7506 2097
Organic Content 210 300 160 100
Ii I
B-11
Station
Survey
Month
Day
Particle size (mm) Phi
gt40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
12
August
29
000
000
012
046
186
3465
4498
17 93
241
45
12
August
29
55 58
12 12
August August
29 29
Percent by weight
000
000
002
009
026
118
189
9656
540
000 000
000 000
003 011
011 028
055 1013
859 5033
1596 1827
7476 2089
1 70 120
B-12
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
_-------------------- shy
B-13
STATION 48 Date 13 March 1984 Depth 107 m Salinity (bottom) 05 ppt Temperature (bottom) bB C No of sampl es 15
Frequency Densi ty (nom 2 ) Total occurrence
Taxa number (7) X SD
Nemertea 31 6b7 17744 1849 1 Nematoda 38 667 21751 22685 Oligochaeta 4 133 2290 6859 ~QQpound12 2nil~nsectisect 31 Ostracoda 1
667 17744 29648 67 572 221 7
~Q9~~[~ spp 1 ~Q[Q2l ~~lQnisect 1 ~Q2sectiQisect sectisect 4 Harpacticoida 1
67 572 2217 67 572 221 7
200 2290 5097 67 572 221 7
Insecta 2 133 1145 3021 Diptera adult 1 67 572 2217 Collembola 24 467 13738 30923
Mean number of organismssample 93 Standard deviation 59
Mean number of organismsm2 795b4 Standard deviation 50740
H= 255 SD= 079 SR= 1 55 J= 071
A-2
STATION 54 Date 14 March 1984 Depth 177 m Salinity (bottom) 00 ppt Temperature (bottom) 66 C No of samples 15
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nemertea 47 1000 26903 14096 Nematoda 7 267 4007 9102 Turbellaria 9 333 5152 1114B Oligochaeta 11 333 6296 10989 Gastropoda 1 67 572 2217 ~Q(Qi~Yl mnil~n2i~ Ostracoda
199 3
1000 200
11390B 171 7
97165 3555
gQ[Qehiy sectlmQnisect Harpacticoida
3 1
200 67
171 7 572
3555 221 7
Heleidae larvae 29 867 16600 10989 Chironomid larvae 2 133 1145 3021 Collembola 2 67 1145 4434
Mean number of organismssample 209 Standard deviation 103
2Mean number 0 f organIsms m 179734 Standard deviation 88247
H = 1 86 SD= 056 SR= 1 33 J= 052
A-3
STATION 57 Date 13 March 1984 Depth 91 m Salinity (bottom) 00 ppt Temperature (bottom) 63 C No of sampl es 15
Frequency Densi ty (no 81 2) Total occurrence
Taxa number (X) X SD
Nemertea 27 667 15455 13459 Nematoda 8 400 4579 6381 Turbellaria 4 200 2290 5097 Oligochaeta 8 400 4579 6381 ~g[gipound~l mnilui Ostracoda
1 1
67 67
572 572
2217 2217
~Qgml[a spp 1 67 572 2217 ~Q[Qeni~m lmQnisect Harpacticoida
2 1
133 67
1145 572
3021 221 7
Insecta 3 67 171 7 b651 Chironomid larvae 1 b7 572 221 7 Collembola 37 400 21179 65700 Hydracarina 1 67 572 221 7
Mean number of organismssample 63 Standard deviation 82
Mean number of organismsm2 54378 Standard deviation 70029
H= 253 SD= 075 SR= 1 83 J= 068
A-4
STATION 18 Date 5 April 1984 Depth 30 II
Salinity (bottoll) 00 ppt Temperature (bottom) 90 C No of samples 15
Frequency Densi ty (no1I 2) Total occurrence
Taxa number (i ) If S D
Nemertea 11 bOO 6296 6042 Nematomorpha 2 133 1145 3021 Nuatoda 119 1000 6811 6 50947 Turbellaria 20 600 11448 13640 ~~~nin~sect liIDni~Q12 Oligochaeta
33 481
1000 1000
18889 275324
10364 142326
~Q~Qi~Yl m2nil~ni2 23 600 13165 1371 7 Ostracoda 33 933 18889 10861 gQ(QQrriYID sect2mQnisectHarpacti coi da
38 7
933 133
21751 4007
13329 13328
Chironomid larvae 16 667 9158 8868 ColI embola 1 67 572 2217
Mean number of organismssample 523 Standard deviation 227
M b f 2ean num er 0 organIsms m 448762 Standard deviation 194508
H= 202 SD= 059 SR= 114 J= 0S6
A-5
STATION 45 Date 18 April 1984 Depth 64 III
Salinity (bottom) 00 ppt Temperature (bottom) 95 C No of samples 15
Total Frequency occurrence
Density (noI 2 )
Taxa number (X) X SD
Nematoda 171 1000 97890 92277 tyg~ sp Turbellaria
1 29
67 600
572 16600
221 7 23506
H~nng~ imDi~g tQQsectQl fg~ig Oligochaeta ~Q[Qi~Y2 m2niD~i Ostracodamiddot
9 41
367 42
100
400 1000 1000 800
1000
5152 23469
210071 24041 57240
781 5 13563
100542 19254 43134
~Q[Qeniym amQnisectHarpacticoida Heleidae larvae
37 2049
1
933 1000
67
21179 117284B
572
189B5 616612
221 7 Chironomid larvae 3 200 171 7 3555 Collembola 1 67 572 221 7 Insect parts 1 67 572 221 7
Mean number of organismssample 1901 Standard deviation 864
b f 2nean num er 0 organIsms m 1632485 Standard deviation 741931
H = 1 52 SD= 046 SR= 1 13 J= 040
A-6
STATION 18 Date 18 April 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom) No of samples 15
Frequency Density (nom2) Total occurrence
Taxa nueber (X) x s D
Nemertea 13 533 7441 9663 Nematomorpha 3 200 171 7 3555 Nematoda 195 1000 111618 63675 Turbell ari a 9 467 5152 6326 ~~ni~~ i~ni~Ql~ 30 867 17172 129B1 Oligochaeta 580 1000 331992 108880 ~QC~i~Ml~ m~nil~n~isectOstracoda
28 18
1000 667
16027 10303
11179 10364
~Q[Q~~iYm sect~Qni2 sect~ci~ gniQQnHarpacticoida
105 1
17
1000 67
400
60102 572
9731
25553 2217
19970 Chironollid larvae 16 667 9158 8B6B
Hean number of organismssample 677 Standard deviation 199
M ean num b I 2er 0 f organIsms AI 580986 Standard deviation 171095
w = 202 SD= 062 SR= 1 10 J= 056
95 C
A-7
STATION 58 Date 18 April 1984 Depth 67 m Salinity (bottom) 00 ppt Temperature (botto) No of samples 15
Frequency Density (nom2) Total occurrence
Taxa number (~) X SD
Nemertea 62 933 35489 26338 Nematoda 224 1000 128218 49903 Turbellaria 9 600 5152 4354 ~nt~sect imni~Q Oligochaeta
1 79
67 1000
572 45220
2217 23506
bnQgYRhY~ Yi~~nE ~Q(~i~Y nil~ni Ostracoda
2 10 19
67 533 600
1145 5724
10876
4434 6214
10989 ~Q[QeniY sectQOiHarpacticoida
30 2
B67 133
17172 1145
12142 3021
Heleidae larvae 6 333 3434 5430 Chironomid larvae 9 400 5152 7B1 5 Chironomid pupae 2 133 1145 3021
Mean number of organismssample 303 Standard deviation 94
I 11 ean num ber 0 f organlsms 2 260442 Standard deviation 81043
H= 233 SO= 070 SR= 1 36 J= 063
97 C
A-B
Frequency Density (nolm 2) Total occurrence -----------------
Taxa number (7) X SD
Nemertea 16 467 9158 10989 Nematoda 266 1000 152258 54541 Turbellaria 23 600 13165 15518 ~l~nH ~Q~iQH 2 133 1145 3021 Oligochaeta 181 1000 103604 56532 bi~hQg~Qn~~ ~it~l~ ~QtQifg mli~lsectisectOstracoda
3 59 15
200 1000 733
1717 33772 8586
3555 23054
7256 ~Q[QQhiY HmQtlsect ~Q[QehiYm sect21tlfQ[lg EQlQQQt~i hQ~i
466 3 1
1000 200 67
266738 171 7 572
75094 3555 221 7
Harpacticoida 30 400 17172 40402 Chironomid larvae 10 533 5724 6214
Mean number of organismssa_pIe 717 Standard deviation 143
I 2Mean number 0 f organlsms m 615330 Standard deviation 122532
H= 226 SO= 072 SR= 119 J= 061
STATION 55 Date 18 April 1984 Depth 30 1ft
Salinity (bottom) 00 ppt Temperature (bottom) 93 C No of SaIIples 15
A-9
STATION 45 Date 4 Hay 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 103 C No of samples 10
Frequency Density (noI2) Total occurrence ---------------- shy
Taxa number (Xl X SD
Neutoda 269 1000 230963 167296 Turbellaria 1 100 859 2715 ~u~yuti Q~iQ ~Ub imni~Q
1 2
100 100
859 171 7
2715 5430
j2~Qn flec Oligochaeta
28 169
BOO 1000
24041 145103
19326 74351
~igeYk~ll iulCIDai ~Q(Qi~Y uini Ostracoda
32 4 5
aoo 400
400
27475 3434 4293
22463 4434 6071
biQQ~~tbt sp ~e(QQbYm mQoi sectampQeD ~nQDisect Chironomid larvae
25 2
578 2
900 200
1000 200
21465 1717
496271 171 7
15279 3620
293820 3620
Mean number of organismssample 111 8 Standard deviation 522
11 b f I 2ean num er 0 organIsms m 95991 5 Standard deviation 447842
H= 193 SD= 065 SR= 118 J= 052
A-10
STATION 18 Date 4 Hay 1984 Depth 34 II
Salinity (bottom) 00 ppt Temperature (bottom) 104 C No of saMples 10
Frequency Density (noI 2 ) occurrence ----------------shy
Taxa (X) X SD
Nemertea 10 600 8SB6 10709 Nuatoda 153 1000 131366 47899 Turbellaria 8 600 6869 6773 ~n1b limnpoundQl Oligochaeta
11 147
700 1000
middot9445 126214
9449 6231 7
~i~g~kXl in1(m~i ~g(2iY OiOi Ostracoda
86 4 1
900 300 100
73840 3434 859
61543 6003 2715
bimoQpoundx1b( sp ~2(QQbiYm mgoiDi ptera adult
3 57
3
300 900 300
2576 48940
2576
4147 21815 4147
Chironomid larvae 4 300 3434 6003 Chironomid pupae 1 100 859 2715
Hean nUMber of orQanismssample 489 Standard deviation 160
b f 2nean nUll er 0 organIsms II 418997 Standard deviation 137721
H= 243 SD= 076 SR= 1 34 J= 066
A-l1
STATION 5B Date 4 Hay 1984 Depth 61 bull Salinity (botto~) 00 ppt Temperature (bottom) 110 C No of suples 10
Frequency Density (nom 2) Total occurrence ---------------- shy
Taxa number (X) X SD
Neertn 41 1000 35203 21206 Nematoda 211 1000 181165 53305 Turbellaria 4 200 3434 7240 Oligochaeta 89 1000 76415 32240 ~i~2~~~11~ iU1(~i~bi1begygny YitQ ~e(biYl ~OiDi OstracDda
4 3
20 1
400 200 BOO 100
3434 2576
17172 859
4434 5795
19829 2715
biue~1bt~ sp ~2(egniY Imeoi sectg11g1O OdD Helei dae larvae
5 32
1 1
400 900 100 100
4293 27475
859 859
6071 18010 2715 2715
Chironomid larvae 7 400 6010 9096
Mean number of organismssample 419 Standard deviation 93
b f 2ean nUll er 0 organIsms m 359753 Standard deviation 79875
H= 221 SD= 068 SR= 138 J= 060
A-12
Frequency Density (nolm 2) occurrence -----------------
Taxa (X) X SD
Nemertea 23 900 1974S 15171 Neutollorpha 1 100 859 271 5 Nellatoda 269 1000 230963 69923 Turbellaria 10 600 8586 991 4 ~~xYnki Q~ampiQ 4 300 3434 6003 ~nb limnipoundQl Oligochaeta
1 79
100 1000
859 67829
2715 40363
~i~Q~kXl io[~i biDe9XQDX ~i[~OBi valvi a
11 3 1
800 300 100
9445 2576 859
6335 4147 271 5
~Q[~poundY mnil~n bimoQampXD[ sp ~Q[QabiY lQO Harpacticoida
18 2
159 1
700 200
1000 100
15455 171 7
135659 859
13904 3620
54272 2715
Chironomid larvae 2 200 171 7 3620 Trichoptera larvae 1 100 859 2715
STATION 55 Date 4 May 1984 Depth 21 m Salinity (bottom) 00 ppt Temperature (bottom) 107 C No of suples 10
Mean number of organismssamples 594 Standard deviation 147
Mean number of organismsm2 501422 Standard deviation 126525
H= 219 aD= 069 SR= 1 63 J= 055
A-13
STATION 45 Date 17 May 1984 Depth 61 m Sal i ni ty (bottom) 01 ppt Temperature (bottom) 121 C No of sampl es 10
Frequency Total occurrence
Taxa nUlllber (7)
NelDertea 1 100 859 2715 Nematoda 163 1000 139952 127996 Polychaeta 1 100 859 2715 ~~~n~h~ imni~Qs Hobsonia florida
2 6
200 600
171 7 5152
3620 4434
Oligochaeta 329 1000 282479 13291 8 ~~lQQYsectk~~12 in~~rmQi 57 900 48940 33142 ~Qr~ipound~2 ffi2niDi 6 500 5152 6003 Ostracoda 5 200 4293 10898 bimDg~yth( SPa 13 600 11162 12176 ~Q(Qebi~m sectQDisect Harpacticaida
2 2
200 100
1717 1717
3620 5430
2poundQttQD poundDQDsectisectDiptera adult
296 1
1000 100
254146 859
172633 271 5
Mean number of organismssample 884 Standard deviation 326
b f I 2nean num er 0 organlss m 759002 Standard deviation 280131
H= 209 SD= 071 SR= 1 33 J= 055
A-14
STATION 18 Date 17 May 1984 Depth 30 m Salinity (bottom) 00 ppt Temperature (bottom) 122 C No of samples 12
Frequency Density (nom2) Total occurrence -----------------
Taxa number (X) X SD
Nematoda 50 833 35775 22815 ~ntb limnipoundQl 3 Oligochaeta 97
250 833
2147 69404
3883 48495
~igQ~~k~ intr~ 27 ~QrQipoundY mnin~i~ 5
667 333
19319 3S7S
19068 5740
Ostracoda 1 83 716 2479 bimnQpound~nr sp 5 ~Q(Q~bY ~mQni S4 ~Q(Q~niY ~QinipoundQ(n 3
333 833 250
3578 60102
2147
5740 43780 3883
fgnQ2Q(i bQ~i 1 sectpoundQtgO poundnQn~i 2 Chironomid larvae 4
83 167 250
716 1431 2862
2479 3342 5592
Mean number of organismssample 235 Standard deviation 116
nean nURl b er 0 f organlslls II 2 201771 Standard devi ati on 99221
H= 236 SD= 075 SR= 1 35 J= 066
A-15
STATION 58 Date 17 May 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) 123 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nemertea 2 100 171 7 5430 Nematoda 75 1000 64395 34404 ~~2Qih~a limQi~Q 2 200 171 7 3620 Oligochaeta 60 1000 51516 33376 ~~igQY~~~12 iQ~[~~gi 2 200 171 7 3620 bitQQ9~Bh~sect Yr~Qsect 3 200 2576 579~
gQ[Qi~Yl ID2Dil~nsectisect Ostracoda
6 6
500 400
5152 5152
6003 8295
binQ~~nr[ sp gg[QQOYm mQQsect sect~QttQn 5n2Q~nsectia Chironomid larvae
2 34
1 1
200 1000
100 100
171 7 29192
859 859
3620 12927 271 5 2715
Mean number of organismssample 194 Standard deviation
2Mean nurn ber 0 f organIsms fA 166568 Standard deviation 56259
H= 225 SD= 072 SR= 1 45 J= 063
A-16
66
STATION 55 Date 17 May 1984 Depth 24 II
Salinity (bottom) 00 ppt Telllperature (bottom) 126 C No of samples 10
Total Frequency occurrence
Taxa nUllber (X) X SD --------------------------------------------------------------~-----------
Nematollorpha 2 200 171 7 3620 Nematoda 63 1000 54092 35297 Oligochaeta 94 1000 80708 44004 ~~iQQY~k~~l iQt~(m~Qi bitnQg~Qh~~ Yi[~Q gQ[QipoundY~ mni~Q~i Ostracoda
10 9 4 2
600 800 300 100
8586 7727 3434 171 7
9050 4874 6003 5430
bimnQ~~ln~[e sp ~Q(QQbiYm mQD ~Q[QQbiYm 2inipoundQ[n~ Chironomid larvae
6 142
3 1
600 1000 200 100
5152 121921
2576 859
4434 50682 5795 2715
Mean number of organismssample 336 Standard deviation 62
2Mean num ber 0 f organisms m 288490 Standard deviation 53421
H= 214 SD= 071 SR= 119 J= 062
A-17
STATION 45 Date 1 June 1984 Depth 61 m Salinity (bottom) 01 ppt Temperature (bottom) 139 C No of samples 10
Total Frequency occurrence
Density (no2)
Taxa nUllber (1) X SD
Nematoda 174 900 149396 132347 Turbellaria 5 200 4293 10898 ~~~QiQ~sect tmQtpoundQ~ ~QQsectQ flQi~sect Oligochaeta ~~iQQysecttygl~ iQl~rm~~i2 ~Q[Qi~~l~ ~~DilgDsectisect Ostracoda
5 20
190 103
12 5
400 900
1000 900
60 (I 400
4293 17172
163134 88436 10303 4293
6071 8095
92563 51524 11304 6071
bimnQpoundytng[ sp ~gQmYsectisect IDg[pound~Qisect ~Q[QQhi~m sectlmQDisect sectpoundQtiQlsectQ pound~Qgsectisect ChironQmid larvae
33 1
10 375
2
900 100 700
1000 200
28334 859
8586 321975
171 7
17196 2715 7010
179201 3620
Mean number of organismssample 935 Standard deviation 254
nurn b 0 f 2lean er organlsms m 802791 Standard deviation 218423
H= 239 SD= 075 SR= 1 22 J= 065
A-18
STATION 18 Date 1 June 1984 Depth 30 AI
Salinity (bottom) 00 ppt Temperature (bottom) 134 C No of samples 11
Frequency Density (no 1m2)
Taxa Total number
occurrence (X)
---------------- shyX SD
Turbellaria 14 636 10928 1157 7 ~~~Qltlg~ ilipoundQ~ Oligochaeta
10 178
727 1000
7805 138937
601 6 67913
~~iQQy~tY~l~ ill~[m~Qi~ 122 636 95227 93619 ~Q[Qipound~ l~i~lsectisect Ostracoda
7 1
455 9 1
5464 78 1
6946 2589
billQylhg[ Spa 16 818 12489 10420 GQ[QQQil HQi~ 139 1000 108496 70934 gQ[Qebi secteiifQ[~ sectQiiQi2 ~Q~sectisect Diptera pupae
1 2 1
9 1 182
11 1
781 1561 781
2589 3473 2589
Chironomid larvae 2 182 1561 3473
Mean number of organismssample 714 Standard deviation 284
nean num b er 0 f organlsms m 2 612728 Standard deviation 244249
H= 232 SD= 075 SR= 1 25 J= 063
A-19
STATION 58 Date 1 June 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 138 C No of samples 10
Frequency Density (noI 2 ) Total occurrence
Taxa number (X) X SD
Nematoda 173 1000 148538 47383 Turbellaria 3 300 2576 4147 Oligochaeta 53 1000 45506 32139 ~giQgY2k~g~ ini~[m~Qi~ bQg91YehY2 Yi[~nsect ~Qr~i~Yl m~nl~n~i
26 1
10
600 100 500
22324 859
8586
3391 2 2715
13424 bimnQpound~Q~[ sp ~Q9~m[Y poundgnitYpoundQlysect ~QtQehiYm ~lQni
4 1
46
200 100
1000
3434 859
39496
8295 2715
22243 Chironomid larvae 1 100 859 271 5
Mean number of organismssample 318 standard deviation 103
M b f I 2ean num er 0 organlsms III 273035 Standard deviation 88842
H = 1 99 SD= 065 SR= 1 08 J= 060
A-20
STATION 55 Date 1 June 1984 Depth 27 m Salinity (bottom) 00 ppt Temp era t u r e (b 0 t tom) 140 C No of samples 10
Frequency Density (nom 2 ) Total occurrence
Taxa nueber (X) X SD
Nematoda 157 1000 134800 69524 Turbellaria 9 400 7727 13696 tlHl~lk ~2~~iQH 1 100 859 2715 Oligochaeta 49 1000 42071 32745 ~~iQQysect~gl~ S[l9sect bHbQghQb~~ Yirl~
10 1
400 100
8586 859
12799 2715
tQ[Qpoundls l2lilUsect bilQHSbg[ sp ~QrQQbil nllQisectHarpacticoida
4 7
134 1
400 500
1000 100
3434 6010
115052 859
4434 7069
44742 271 5
sectpoundQUQlls poundsQgn~sect Chironomid larvae
1 1
100 100
859 859
271 5 2715
Hydracarina 1 100 859 2715
Hean number of organismssample 376 Standard deviation 132
M b f 2ean num er 0 organIsms m 322834 Standard deviation 113127
H= 202 SD= 068 SR= 1 40 J= 055
A-21
STATION 45 Date 18 June 1984 Depth 67 m Salinity (bottom) 01 ppt Temperature (bottom) 149 C No of samples 10
Frequency Density (nom2)
Taxa Total nUllber
occurrence ex) i SD
Nematoda 109 1000 93587 3891 7 Turbell ari a 3 200 2576 5795 ~g~tbg limoipoundQl Q~Qni2 fQ(i~2 Oligochaeta ~gigQ~~Y inl[ggi ~Q[QiSY2 moilo Ostracoda
3 2
194 44
7 3
200 200
1000 1000 200 200
2576 171 7
16656B 37778 6010 2576
5795 3620
118364 36020 12831 5795
bimoQampl~n~[2 sp ~Q[QQbiYm lmgoi Harpacticoida sectpoundQQ1202 pound2022Osect Chironomid larvae
68 1 1
113 2
900 100 100
1000 200
58385 859 859
97022 171 7
97627 2715 2715
73976 3620
Mean number of organismssa_pie 550 Standard deviation 371
Mean nUll ber 0 f organIsms 2II 472230 Standard deviation 318519
H= 242 SD= 077 SR= 1 32 Ja 065
A-22
STATION 18 Date 18 June 1984 Depth 34 m Salinity (bottom) 00 ppt Temperature (bottom) 155 C No of samples 10
Frequency Density (nom 2) Total occurrence ----------------shy
Taxa nUlber (Z) X SD
Neutoda 291 1000 249853 138826 Turbellaria 1 100 859 2715 ~~n~~nki~ sectQ~~iQ~2 ~g~ntbg2 limni~Q9 Oligochaeta
1 3
123
100 300
1000
859 2576
105608
271 5 4147
48240 ~~igQY~~~~9 int~(mgii ~Q[~i~~~ mini~ni bimnQ~ylbg(~ Spa
67 6 5
1000 500 400
57526 5152 4293
40485 6003 6071
~Q(QebiYm ~imQnisect Harpacticoida
80 2
1000 200
68688 171 7
41276 3620
sect~QttQini ~2nig~n~i Chironomid larvae
2 4
200 300
171 7 3434
3620 6003
Mean number of organismssample 585 Standard deviation 194
I 2Mean urn b er 0 f organIsms m 502281 Standard deviation 166943
H= 203 SD= 068 SR= 1 20 J= 057
A-23
STATI ON 58 Date 18 June 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (noI 2) Total occurrence
TaKa number (X) X SD
Nellertea 2 100 1717 5430 Nematoda 160 1000 137376 6361 1 Turbellaria 4 400 3434 4434 Oligochaeta 36 1000 3091 0 14705 ~iQQYik~ Q1rQ 4 300 3434 6003 bitnQgl~ebysect YrDsect ~Q[QiY~ ~~nni biQQpoundY1h[ sp ~Q[Qeng ~ilQD Chironomid larvae
3 1 3
61 1
300 100 300
1000 100
2576 859
2576 52375
859
4147 2715 4147
1428 1 2715
Chironollid pupae 1 100 859 271 5
Mean number of organismssample 276 standard deviation 72
nean nurn b er 0 f organIsms I 2 236974 Standard deviation 61410
H = 1 78 SD= 060 SR= 1 23 J= 051
A-24
STATION 55 Date 18 June 1984 Depth 18 m Salinity (bottom)1 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (no 1m2) occurrence
Taxa (X) X SD
Nematoda 160 1000 137376 43967 Turbellaria 1 100 859 271 5 Oligochaeta 61 1000 52375 31985 ~~iQQY~kY~~ int~[mQi~ ~Q[Qipound~l~ m~nini~ biIDnQ~Ylb[s sp
3 3 3
300 300 300
2576 2576 2576
4147 4147 4147
~Q[Q~bi~ ~slIDQni~ Chironomid larvae
85 6
1000 600
72981 5152
34165 4434
Mean number of organismssample 322 Standard deviation 75
2Mean number 0 f organIsms m 276469 Standard deviation 64099
H= 178 5D= 065 SR= 0B4 J= 059
A-25
Frequency Density (no2) occurrence -----------------
Taxa (7) X SD
Nematoda 104 1000 89294 47409 Turbell ar i a 1 100 859 2715 ~~~nQ~sect imni~Q~ tjQQsectQlis flQig~ Oligochaeta
2 1
297
100 100
1000
171 7 859
255004
5430 271 5
146273 ~~i~QYsect~Y~lls ilr2is gQrQi~y~ IDDilDia
24 4
600 300
20606 3434
27212 6003
Ostracoda 2 200 171 7 3620 biDQSy~b~C~ sp M~QYsectisect m~r~~Qi ~QrQeniy QD Harpacticoida
157 1 1 1
900 100 100 100
134800 859 859 859
73197 2715 2715 2715
sectpoundQttQDs SsDQD 113 900 97022 61656
STATION 45 Date 2 July 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) No of samples 10
172 C
Mean number of organismssample 708 Standard deviation 339
M ean num b er f 20 organisms 607889 Standard deviation 290B22
H= 216 SD= 073 SR= 1 27 J= 058
1-26
STATION 18 Date 2 July 1984 Depth 24 WI
Sal inity (bottom) 00 ppt Temperature (bottom) 172 C No of samples 10
--------------------------------~-----------------------------------------Frequency Density (nom2)
Total occurrence Taxa number (7) X SD
Nematoda 202 1000 173437 113532 ~~~nih~sect mnpoundQ~ Oligochleta
4 102
400 1000
3434 87577
4434 54873
~~igQYsect~Y~12 inl~rmgi2 ~Q[~poundYl~ m~ni~nsectisect bimnQpoundylh~[~ Spa
115 4
15
900 300 900
98739 3434
12879
100720 6003 9274
~Q[QQniY~ sect~QDi~ 55 900 47223 40525 Harpacticoida 1 100 859 2715 sectpoundQiiQlD SDg~DEisect Chironomid larvae
2 6
200 400
1717 5152
3620 7240
Hymenoptera 1 100 859 2715 Hydracarina 1 100 859 2715
Mean number of organismssample 508 Standard deviation 253
2Mean num ber 0 f organIsms m 436169 Standard deviation 217580
H= 225 SD= 074 SR= 1 22 J= 063
A-27
STATION 58 Date 2 July 1984 Depth 58 1
Salinity (bottom) 00 ppt Temperature (bottom) IBO C No of samples 10
Frequency Density (no2) Total occurrence
Taxa number ltX) i SD
Nematoda 151 1000 129649 42729 Turbellaria 1 100 859 2715 01 i gochaeta 41 1000 35203 22698 ~~i~e~~~ int~~m~~ 3 200 2576 5795 btbQglYRhY~ Yir~n~ ~e~~ampy mni~niii bimQeamp~tb~ sp ~e~eQhiY ~mQni Chironomid larvae
1 4 2
68 1
100 300 200
1000 100
859 3434 171 7
58385 859
271 5 6003 3620
1557 1 2715
Mean number of organisassample 272 Standard deviation
I 2Mean num ber 0 f organIsms I 233539 Standard deviation 62546
H = 1 69 SD= 061 SR= 099 J= 053
A-28
73
STATION 55 Date 2 July 1984 Depth 15 III
Salinity (bottom) 00 ppt Temperature (bottom) 182 C No of samples 10
Frequency Density (nom2) occurrence
Taxa (X) X SD
Nematoda 184 1()00 157982 5264B Turbellaria 1 100 859 271 5 Oligochaeta ~~iQQ~sect~Y~ll~ n~[~~Qi~ bitnggYQDYsect Yi[~nsect ~QrQipoundM2 m2ni~nsectisect bimnQpoundYn~[2 sp ~QrQQhiM Qni Harpacticoida
91 2 1 B 2
96 2
1000 200 100 500 200
1000 200
78133 171 7 859
6869 171 7
82426 1111
26058 3620 271 5 1890 3620shy
25980 3620
ChirDnomid larvae 5 400 4293 6071 Chironolllid pupae 1 100 859 2715
Mean number of organismssample 393 Standard deviation 53
2t1ean nUllber Df organlsms III 337430 Standard deviatiDn 45080
H= 187 SD= 067 SR= 116 J= 054
A-29
STATION 45 Date 17 Jul y 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (X) X SD
Nematoda 215 1000 184599 45837 ~~n~b~~ imDipoundQ Qe~Qni fllHi2
3 1
300 100
2576 859
4147 2715
Oligochaeta 305 1000 261873 147955 ~~iQQY~k~ in~rm~2i ~Qr~ipoundYl IDniln~i~ Ostracoda
17 1 2
500 100 200
14590 859
171 7
22554 2715 3620
bmnQpound~ihr sp ~QCQQhiY ~lQD~
176 1
1000 100
151114 859
57125 2715
Harpacticoida 4 300 3434 6003 sectQ~~Qn poundnQnai~ Chironomid larvae
91 5
1000 400
78133 4293
61310 6071
Mean number of organismssample 821 Standard deviation 275
M b f 2ean num er 0 organlsms m 70491 1 Standard deviation 236369
H= 215 SD= 073 SR= 114 J= 060
A-30
STATION 18 Date 17 Jul y 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom 203 C No of samples 10
Frequency Density (001 2 Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 339 1000 291065 119140 Turbellaria 3 200 2576 5795 ~~2~b~~ limnipoundQ12Oligochaeta
4 18S
300 1000
3434 161417
6003 89393
~~iQQy~~~ls in~(ID~Qi bim~Qampy~bg(2 Spa
34 16
800 700
29192 1373B
22967 15252
~g(gebi~m ~21mQni2 Harpacticoida
52 3
1000 200
44647 2576
25212 5795
2ampQ11Q1202 ampS02Qg~2i2 Chironomid larvae
18 10
700 700
15455 8586
13904 701 0
Mean number of organi$mssample 667 Standard deviation IBB
H ean nurn b er 1 20 f organIsms m 572686 Standard deviation 161750
H = 1 99 SD= 065 SR= 090 J= 060
A-31
STATION 58 Date 17 July 1984 Depth 55 AI
Salinity (bottom) 00 ppt Temperature (bottom) 197 C No of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nellatoda 173 1000 14853B 66390 Turbellaria 1 100 859 271 5 ~~~n~hu ini~QA Oligochaeta
1 46
100 1000
859 39496
2715 26293
~gipoundQy~~ygl2 in~rJg~i~ b1nQglYRnY~ Yi( Bivalvia
6 2 1
400 200 100
5152 1717 859
8295 3620 271 5
ei~ IDnH~n~i~ 2 200 171 7 3620 Ostracoda 1 100 959 271 5 biIDQHlh~( Spa ~Q(QRbim ~21Qnisect Diptera pupae
1 94
1
100 1000 100
859 80708
859
2715 35332 2715
Heleidae 1arvae 5 500 4293 4525 Chironomid larvae 1 100 859 2715
Mean number of organismssample 335 Standard deviatiDn 113
Mean number of organismsRI2 287631 Standard deviation 97413
H= 1 86 SO= 064 SR= 155 J= 049
A-32
STATION 55 Date 17 July 1984 Depth 18 m Sali nity (bottom) 00 ppt TeAlperature (bottom) 199 C No of samples 10
Frequency Density (nom2 ) occurrence
Taxa (X) x S D
Nematoda 61 1000 52375 33972 Turbellaria 1 100 859 2715 Oligochaeta 24 900 20606 11590 ~~i2QY~k~~1 iOi[2 bimDQ~xlb~r sp ~Q[QQhi~ sectgni~ Chironomid larvae
3 1
38 3
200 100
1000 300
2576 859
32627 2576
5795 2715
19326 4147
Mean number of organismssample 131 standard deviation 54
M b f 2ean num er 0 organIsms 112477 Standard deviation 46757
H= 184 SD= 066 SR= 085 J= 065
bull
A-33
STATION 45 Date 1 August 1984 Depth 58 m Sal i nity (bottoll) 03 ppt Temperature (bottom) 203 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa nUllber (X) X SD
Nematoda 145 1000 124417 52344 Turbellaria 1 100 859 2715 Mmth~sect iHpoundQ~ Q~~Qi ilQ[i9Oligochaeta
5 3
196
500 300
1000
4293 2576
168286
4525 4147
91064 ~igQYsect~~li int9i Ostracoda
2 3
100 300
171 7 2576
5430 4147
bimnQpoundtl sp ~Q[Q2hiY sectlQni~
240 6
1000 600
206064 5152
73526 4434
sectpoundQtQl poundngnai~Helei dae larvae
1862 1
1000 100
1598713 859
966134 271 ~
Mean number of organismssample 2464 Standard deviation 1156
211 ean num ber 0 f organIsms II 2115590 Standard deviation 992518
H= 124 SD= 041 SR= 089 J= 036
A-34
STATION 1S Date 1 August 1984 Depth 24 II
Salinity (bottom) 00 ppt Temperature (bottom) 198 C No of samp I es 10
Frequency Density (nom2) occurrence ---------------- shy
Taxa (X) X S D
Nuertea 1 100 859 2715 Nellatolllorpha 1 100 859 2715 Nematoda 248 1000 212933 108288 Turbellaria 4 400 3434 4434 ~untb~la Hli~g Oligochaeta
4 206
400 1000
3434 176872
4434 75309
~~igQYli~dli i[t~(gi~ ~QtQpound l binQ~ybt2 sp ~2l~bi Q[i ~2tlgtQ(ila tirisect sectpoundQtel poundl9lla Chironomid larvae
10 1
20 205
1 574
9
500 100 800
1000 100
1000 400
8586 859
17172 176013
859 492836
7727
10709 271 5
14021 48104
271 5 150531
13696
Mean number of organismssample 1284 Standard deviation 290
M b f I 2ean nurn er 0 organIsms III 1102442 Standard deviation 2488B5
H= 211 SD= 071 SR= 1 16 J= 057
A-35
STATION 58 Date 1 August 1984 Depth 55 m Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samp 1es 10
Frequency Densi ty _ ltnom2 ) Total occurrence
Taxa number (7) X SD
Nemertea 1 100 859 2715 Nematoda 22 900 18889 15036 Turbellaria 1 100 859 2715 Oligochaeta 19 700 16313 17385 biiQQgl~QhY~ YiCg~~ 2 200 171 7 3620 ~Q[~i~~l~ m2nil~n2i2 ~Q[QehiYm ~lmQni2
4 164
300 1000
3434 140810
6003 103048
Heleidae larvae 8 500 6869 8868
Mean number of organismssample 221 Standard deviation 111
I 2Mean num ber 0 f organIsms m 189751 Standard deviation 95391
H = L 37 SD= 043 SR= 090 J= 046
A-36
STATION 55 Date 1 August 1984 Depth 15 m Salinity (bottoll) 01 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (i ) X SD
Nemertea 1 100 859 2715 Neutoda 122 1000 104749 7394B Turbellaria 4 300 3434 6003 ~~~~~nt~ secte~poundQa~ Oligochaeta
1 118
100 1000
859 101315
2715 61223
~giQgY~k~~l iot~[m~Qi btbQg~2b~ Y[O ~grQipound~ ~nl~ni b~ngpound~tb~[ Spa
3 1 5 1
200 100 500 100
2576 859
4293 859
5795 2715 4525 2715
~Q[QebiYm ~mQoi sect~QttQ~ ~OQOi Heleidae larvae
42 2 2
800 200 100
36061 171 7 171 7
21341 3620 5430
Chironomid larvae 4 400 3434 4434
Mean number of organismssapIe 306 Standard deviation 169
M b f I 2ean nurn er 0 organIsms m 262732 Standard deviation 145101
H = 198 SD= 067 SR= 1 45 J= 054
A-37
~-- --------------~~-------------
STATION 45 Date 17 August 1984 Depth 61 1
Salinity (bottom) 10 ppt Temperature (bottom) 210 C No of samp 1es 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nematoda 240 1000 206064 130213 ~~h~sect limQ tjQ~~Hi~ fQ[i~~ Oligochaeta
31 2
245
400 100
1000
26617 1717
210357
75228 5430
121374 babgglYQbl~ Yi[~sect 1 100 859 2715 Ostracoda 1 100 859 271 5 biQ~xtb~[ Spa ~~Q~~isect ~[pound~Qisect ~Qgebi HQOi
333 2
143
1000 200
1000
28591 4 171 7
1227BO
106553 3620
106860 sectpoundQUg~ poundg~nsectisect 1738 1000 1492247 68441 7
Mean number of organismssample 2736 Standard deviation 944
M b f I 2ean num er 0 organlslls m 2349130 Standard deviation 810600
H= 172 SD= 056 SR= 079 J= 052
A-38
STATION 18 Date 17 August 1984 Depth 27 III
Sal i ni ty (botto) 01 ppt Temperature (bottom) 214 C No of samples 10
Frequency Density (nom 2 ) occurrence
Taxa (X) X SD
Nematoda 186 1000 159700 62468 ~tgt SPa 2 100 171 7 5430 Turbellaria 8 400 6869 8868 ~~ntbg2 imnipoundQ 12 700 10303 11304 Oligochaeta 283 1000 242984 90509 ~~iQQY~~Y~lls inlgtmggisBivalvia
4 1
400 100
3434 859
4434 271 5
~Qt~i~Y nilnsectisectbimnQpoundttbg[s SPa ~QtQQbi~ islmQDi2
1 17
286
100 900
1000
859 14596
245560
271 5 10747 83461
sectpoundetteln poundDsggnsectisect Chironomid larvae
526 4
1000 3Q0
451624 3434
179610 6003
Mean number of organismssapIe 1330 Standard deviation 162
Mean nurn ber I 20 f organIsms m 1141938 Standard deviation 139389
H= 214 SD= 073 SR= 1 06 J= 060
A-39
STATION 58 Date 17 August 1984 Depth 55 II
Salinity (bottom) 01 ppt Temperature (bottom) 220 C ND of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (7) x S D
Nematoda 68 1000 58385 27689 Turbellar i a 4 200 3434 8295 Oligochaeta 19 800 16313 13084 ~~i~Q~k~~l~ in~~[m~i bitUQ9Y2bYa Yi[~na Bivalvia
3 3 4
300 300 300
2576 2576 3434
4147 4147 6003
gQ[QipoundYl~ mnilDa 1 100 859 2715 binQpoundY~[ sp gQ[Q2UY a~mgnia sect~Qtgl~n ~n~~ni
2 338
6
100 1000 400
171 7 290207
5152
5430 56636 7240
Mean number of organismssample 448 Standard deviation 72
W b f 2lean num er 0 organlsms II 384653 Standard deviation 61988
H = 1 27 SD= 041 SR= 1 02 J= 038
A-40
STATION 55 Date 17 August 1984 Depth 18 m Salinity (bottom) 00 ppt Temperature (bottol) 223 C No of samples 10
Frequency Density (nom 2 ) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 291 1000 249853 118104 Turbellaria 1 100 859 2715 M~ntb~ mni~Q Oligochaeta
1 47
100 1000
859 40354
2715 28347
~~iQQ~sectkY~ll int~[m~gi bitbQQ1YSDY Yi(gn Bivalvia
25 12
6
900 500 400
21465 10303 5152
1231 0 18459 7240
~Q~2ipoundY mnil~ni Ostracoda
11 8
400 600
9445 6869
12442 6773
bmnQpoundYb~r~ SPa 52 1000 44647 19746 ~QrQsbY lmgnisectsQiielo snQ~ni~ Chironomid larvae
43 5
15
1000 400 BOO
36920 4293
12879
21436 6071 8344
Mean number of organismssample 517 Standard deviation 174
M b f I 2ean num er 0 organlsms m 443896 Standard deviation 149431
W = 228 SD= 065 SR= 1 33 J= 062
A-41
STATION 45 Date 29 August 1984 Depth 55 III
Salinity (bottom) 07 ppt Temperature (bottom) 199 C No of samples 10
Frequency Density (noI 2) Total occurrence
Taxa number (X) X SD
Nematoda 192 1000 164851 98380 ~sntbsect limnipoundQlDligochaeta
2 198
200 1000
171 7 170003
3620 67339
~Q[eipoundYls msniln~isect Ostracoda
1 4
100 400
859 3434
2715 4434
bimnQpoundytb[s Spa gQ[Qeniy sect21QOi~ sectpoundQttQlsO poundsOsggOi
164 87
2468
1000 1000 1000
140810 74698
2119025
39283 39460
840890
Mean number of organismssample 311 6 Standard deviation 101 1
ill b f 2nean nUll er 0 organIsms 2675398 Standard deviation 8682B8
W= 116 SD= 036 SR= 060 J= 039
A-42
STATION 18 Date 29 August 1984 Depth 30 bull Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samples 10
Total Frequency occurrence
Densi ty 2
(nom )
Taxa number (~ ) x S D
Nematoda 150 1000 128790 28905 Turbellaria 7 400 6010 9096 ~nh imni~Qj Oligochaeta ~~i~2Y~k~~1 ini~CIDgii bih2g~Qb~ Yi(~U2 Bivalvi a
B 145
1 1 2
600 1000
100 100 200
6869 124497
859 859
171 7
677 3 84732
271S 2715 3620
~Q[Qi~yli miDllgni bimn2pound~ih~C sp ~QtQehiY imQUia Harpacticoida
7 7
265 1
500 300
1000 100
6010 601 0
227529 859
8145 10747
139462 2715
sect~QtiQDi ~Q~Q~i~ Chironomid larvae
2471 2
1000 200
2121601 171 7
1063112 3620
Mean number of organismssample 3067 Standard deviation 121 9
2Mean number 0 f organIsms m 2633326 standard deviation 1046718
H = 1 09 SD= 034 SR= 1 04 J= 029
A-43
STATION 58 Date 29 August 1984 Depth 55 111
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (noI 2 ) Total occurrence -----------------
Taxa nUllber (X) X SD
Nemertea 4 400 3434 4434 Nuatoda 64 1000 54950 25016 Turbellaria 9 400 7727 11047 ~Hl~b limli~Q19 Oligochaeta
1 37
100 1000
859 31769
2715 19006
i~Qyh il(~~ bHtlQSlheln Yl Bivalvia
4 4
20
200 300 400
3434 3434
17172
8215 6003
26541 ~e(ijY l bQ~dlH sp
26 1
700 100
22324 859
25662 2715
~Q[QQhil iQ sectjgUell HD Heleidae larvae
418 20
1
1000 800 100
358895 17172
859
129443 12799 271 5
Mean number of organismssample 609 Standard deviation 175
nean num b er 0 f organIsms 1 111 2 522887 Standard deviation 150164
H= 176 SD= 051 SR= 1 30 J= 047
A-44
I I
I
I
STATION SS
Date 29 August 1984 Depth 21 1
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (no2) Total occurrence
Taxa nUllber (X) x S D
Nematoda ISO 1000 128790 37969 Turbellaria 1 100 859 271 5 Oligochaeta 48 1000 41213 16088 ~i~g~sect~~l iQ~~mgi bi~QQg~gb~sect ~i~nsect
10 14
600 600
eSB6 12020
9050 14137
Bivalvia 4 200 3434 7240 ~Q[Q~Yl niQaa Ostracoda
15 7
700 SOO
12879 6010
15806 7069
bmQg~~~b~ SPa 14 800 12020 8295 ~g[gaby mgni sect~g~~Qn ~ngnai Chironomid larvae
IB4 25 9
1000 900 700
157982 21465
7727
35563 16810 6335shy
Mean number of organismssample 481 Standard deviation B6
2Mean number 0 f organlsms m 412987 Standard deviation 74131
H= 24S SD= 074 SR= 1 23 J= 068
A-45
STATION 45 Date 14 September 1984 Depth 61 11
Salinity (bottom) 03 ppt Temperature (bottom) IB4 C No of samples 10
---------------------------------~----------------------------------------
Taxa TotalnUlllDer
Frequency occ~~~ence
Density (no 2) -----X-------sect7B
Nematoda 189 1000 162275 85233 t1tQ SPa
Turbellaria 2 2
200 100
171 7 171 7
3620 5430
~~~nIng limoifQl t1QQQDi~ flQriQ Oligochaeta
5 19
142
400 800
1000
4293 1631 3
121921
6071 12442 30504
~QQifYl mDl~D bimoQpoundt1hgr Spa Cumacea
19 184
2
800 1000 200
1631 3 157982
171 7
130B4 69541 3620
~Q[QnniYm ~~lmQDi Harpacticoida
118 1
1000 100
10131 5 B59
43367 2715
sectfQIIQD fOQgO Chironomid larvae
1780 1
1000 100
1528308 859
673586 2715
Mean number of organismssample 2464 Standard deviation 874
M ean num b er f 20 organlsms 2115590 Standard deviation 750305
H= 151 SD= 046 SR= 1 07 J= 041
A-46
STATION 18 Date 14 September 1984 Depth 21 III
Salinity (bottom) 01 ppt Temperature (botto) 182 C No of samples 10
Frequency DenSity (nom 2 ) Total occurrence ---------------- shy
Taxa nUlDber (i) X SD
Nemertea 1 100 859 271 5 Nematoda 186 1000 159700 44925 Turbellaria 16 400 13738 20717 ~~Dth~~ limni~Ql Oligochaeta
13 55
700 900
11162 47223
9096 30085
~Q~ei~Yl nil~Qi~ 17 900 14596 7069 bimDg~lbg[ Spa b 500 5152 6003 ~Q[Q2niY ~lgQi~ Harpacti coi da
562 2
1000 200
482533 171 7
136766 3620
sectpoundQttQ~Q~ ~n~ni 791 1000 679153 324290
Mean number of organismssample 1649 Standard deviation 447
I 211ean nUll ber 0 f organIsms I 1415831 Standard deviation 384136
H= 179 SD= 064 SR= 084 J= 054
A-47
STATION 58 Date 14 September 1984 Depth 58 III
Salinity (bottom) 01 ppt Temperature (bottom) 191 C No of sampl es 10
-------------------------------------------~------------------------------Frequency Density (nom 2 )
Total occurrence Taxa number eX) X SD
Nemertea 1 100 859 2715 Nematoda 55 1000 47223 18658 Turbellaria 10 500 8586 11448
1 100 859 2715 Oligochaeta 41 1000 35203 17850 ~~iQQ~~gll iu1g[m~i ~Q[Q~Yl nilD bimnQ~Y~h[ Spa ~Q[Q~hiYm lmgui sectpoundQilg1D poundU2D Chironomid larvae
4 10
2 277
23 4
100 500 200
1000 700 300
3434 8586 171 7
237832 19748 3434
10861 11448 3620
50561 21051 6003
Mean number of organismssample 428 Standard deviation 51
M b f 2ean num er 0 organIsms III 367481 Standard deviation 43743
H= 179 SD= 055 SR= 114 J= 052
A-48
I I
STATION SS Date 14 September 1984 Depth 21 II
Salinity (bottom) 01 ppt Temperature (bottom) 190 C No of samples 10
--------------------------------------------------------------------~-----
Frequency Density (no1I2) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 102 1000 87577 39200 Oligochaeta 34 700 29192 31142 ~iQ2Y~y1 int(mgi~ bithQgl~en~ Yi(gDsect ~Q(~i~Y m~DilgDsecti~ bimDQamp~1h(sect sp ~2(QQhiY slmQD 2poundQiiQlsD ~sD~g~nsecti Chironomid larvae
36 18 16 17
100 16
3
1000 600 800 700
1000 800 300
30910 15455 13738 14596 85860 13738 2576
157BO 20953 10078 14621 32126 10861 4147
Mean number of organismssample 342 Standard deviation 97
2Mean nUllber 0 f organlsms m 293641 Standard deviation 83617
H= 262 SD= 079 SR= 095 J= 083
A-49
Appendix B--Sediment particle size and organic content of the Cathlamet Bay
benthic invertebrate sites 13 March through 14 September
1984
iii
1
Station 18a 48 54 57
Survey 1 1 1 1
Month March March March March
Day 13 13 13 13
Particle size (mm) Phib Percent by weight
gt 40 -2 000 000 000
20- 40 -1 000 000 000
10- 20 0 000 009 000
05- 10 1 018 1079 032
025- 050 2 545 7583 2468
0125- 025 3 8731 1225 6783
00625-0125 4 491 037 657
lt0625 (5-12) 216 067 060
Organic Content 160 116 128
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
b Phi= -log2(sediment particle diameter in mm)
B-1
Station 18a 48 54 57
Survey 2 2 2 2
Month April April April April
Day 5 5 5 5
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 003 093 000
05shy 10 1 005 31 75 023
025shy 050 2 087 5904 2368
0125- 025 3 6316 750 7155
00625-0125 4 3056 026 427
lt0625 (5-12) 533 052 028
Organic Content 081 077 065
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-2
Station 45 55 58
Survey 3 3 3 3
Month April April April April
Day 18 18 18 18
Particle size (mm)
gt 40
Phi
-2
Percent by weight
000 000 000
20shy 40 -1 000 000 000
10shy 20 0 005 009 004
05shy 10 1 010 027 013
025shy 050 2 015 095 225
0125- 025 3 097 536 6111
00625-0125 4 453 2821 2205
lt0625 (5-12) 9420 6511 1442
Organic Content 31 42 14
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-3
Station 18a 45 55 58
Survey 4 4 4 4
Month May May May May
Day 4 4 4 4
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 021
05shy 10 1 000 065 063
025shy 050 2 012 370 230
0125- 025 3 091 4099 4696
00625-0125 4 322 3650 3052
lt0625 (5-12) 9575 1810 1939
Organic Content 330 180 160
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-4
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
5
May
17
000
000
005
016
217
5862
2729
1170
100
45 55 58
5 5 5
May May May
17 17 17
Percent by weight
000 000
000 000
005 008
113 031
325 274
1903 5613
2784 2401
4870 1672
240 110
000
000
000
010
020
079
397
9494
390
B-5
Station 18al 45 55 58
Survey 6 6 6 6
Month June June June June
Day 6 6 6 6
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 020
05shy 10 1 005 051 027
025shy 050 2 005 301 1 79
0125- 025 3 074 3189 5404
00625-0125 4 599 4118 2885
lt0625 (5-12) 9317 2332 1485
Organic Content 340 240 150
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-6
Station
Survey
Month
Day
Particle size Cmm) Phi
gt 40 -2
20shy 40 -1
10shy 20 a
05shy 10 1
025shy 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
7
June
18
000
000
005
029
138
3917
4143
1768
180
45
7
June
18
55 58
7 7
June June
18 18
Percent by weight
000
000
000
010
020
080
427
9464
310
000 000
000 000
000 007
011 022
057 190
957 5286
3023 2642
5957 1853
1 70 110
B-7
Station 18al 45 55 58
Survey 8 8 8 8
Month July July July July
Day 2 2 2 2
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 006 002 006
05shy 10 1 006 0l3 023
025shy 050 2 017 088 171
0125- 025 3 074 2712 5365
00625-0125 4 552 3892 3081
lt0625 (5-12) 9345 3294 l354
Organic Content 410 210 160
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-8
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
9
July
17
000
000
003
013
130
4294
4434
1127
130
45
9
July
17
Percent
000
000
000
006
012
051
046
9885
290
55
9
July
17
by weight
000
000
019
048
091
628
3616
5597
030
58
9
July
17
000
000
004
022
158
5017
3148
1650
140
B-9
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18al
10
August
1
45
10
August
1
55
10
August
1
58
10
August
1
Percent by weight
000 000
000 004
001 004
009 018
018 088
098 306
049 2510
9824 7070
000
005
045
763
3604
4495
932
156
100 190 060
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-10
Station 18 45 55 58
Survey 11 11 11 11
Month August August August August
Day 17 17 17 17
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000 000
20- 40 -1 005 000 000 000
10- 20 0 021 003 000 210
05- 10 1 064 009 000 159
025- 050 2 226 027 045 2656
0125- 025 3 3259 131 712 3719
00625-0125 4 4327 195 1737 1159
lt0625 (5-12) 2098 9635 7506 2097
Organic Content 210 300 160 100
Ii I
B-11
Station
Survey
Month
Day
Particle size (mm) Phi
gt40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
12
August
29
000
000
012
046
186
3465
4498
17 93
241
45
12
August
29
55 58
12 12
August August
29 29
Percent by weight
000
000
002
009
026
118
189
9656
540
000 000
000 000
003 011
011 028
055 1013
859 5033
1596 1827
7476 2089
1 70 120
B-12
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
_-------------------- shy
B-13
STATION 54 Date 14 March 1984 Depth 177 m Salinity (bottom) 00 ppt Temperature (bottom) 66 C No of samples 15
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nemertea 47 1000 26903 14096 Nematoda 7 267 4007 9102 Turbellaria 9 333 5152 1114B Oligochaeta 11 333 6296 10989 Gastropoda 1 67 572 2217 ~Q(Qi~Yl mnil~n2i~ Ostracoda
199 3
1000 200
11390B 171 7
97165 3555
gQ[Qehiy sectlmQnisect Harpacticoida
3 1
200 67
171 7 572
3555 221 7
Heleidae larvae 29 867 16600 10989 Chironomid larvae 2 133 1145 3021 Collembola 2 67 1145 4434
Mean number of organismssample 209 Standard deviation 103
2Mean number 0 f organIsms m 179734 Standard deviation 88247
H = 1 86 SD= 056 SR= 1 33 J= 052
A-3
STATION 57 Date 13 March 1984 Depth 91 m Salinity (bottom) 00 ppt Temperature (bottom) 63 C No of sampl es 15
Frequency Densi ty (no 81 2) Total occurrence
Taxa number (X) X SD
Nemertea 27 667 15455 13459 Nematoda 8 400 4579 6381 Turbellaria 4 200 2290 5097 Oligochaeta 8 400 4579 6381 ~g[gipound~l mnilui Ostracoda
1 1
67 67
572 572
2217 2217
~Qgml[a spp 1 67 572 2217 ~Q[Qeni~m lmQnisect Harpacticoida
2 1
133 67
1145 572
3021 221 7
Insecta 3 67 171 7 b651 Chironomid larvae 1 b7 572 221 7 Collembola 37 400 21179 65700 Hydracarina 1 67 572 221 7
Mean number of organismssample 63 Standard deviation 82
Mean number of organismsm2 54378 Standard deviation 70029
H= 253 SD= 075 SR= 1 83 J= 068
A-4
STATION 18 Date 5 April 1984 Depth 30 II
Salinity (bottoll) 00 ppt Temperature (bottom) 90 C No of samples 15
Frequency Densi ty (no1I 2) Total occurrence
Taxa number (i ) If S D
Nemertea 11 bOO 6296 6042 Nematomorpha 2 133 1145 3021 Nuatoda 119 1000 6811 6 50947 Turbellaria 20 600 11448 13640 ~~~nin~sect liIDni~Q12 Oligochaeta
33 481
1000 1000
18889 275324
10364 142326
~Q~Qi~Yl m2nil~ni2 23 600 13165 1371 7 Ostracoda 33 933 18889 10861 gQ(QQrriYID sect2mQnisectHarpacti coi da
38 7
933 133
21751 4007
13329 13328
Chironomid larvae 16 667 9158 8868 ColI embola 1 67 572 2217
Mean number of organismssample 523 Standard deviation 227
M b f 2ean num er 0 organIsms m 448762 Standard deviation 194508
H= 202 SD= 059 SR= 114 J= 0S6
A-5
STATION 45 Date 18 April 1984 Depth 64 III
Salinity (bottom) 00 ppt Temperature (bottom) 95 C No of samples 15
Total Frequency occurrence
Density (noI 2 )
Taxa number (X) X SD
Nematoda 171 1000 97890 92277 tyg~ sp Turbellaria
1 29
67 600
572 16600
221 7 23506
H~nng~ imDi~g tQQsectQl fg~ig Oligochaeta ~Q[Qi~Y2 m2niD~i Ostracodamiddot
9 41
367 42
100
400 1000 1000 800
1000
5152 23469
210071 24041 57240
781 5 13563
100542 19254 43134
~Q[Qeniym amQnisectHarpacticoida Heleidae larvae
37 2049
1
933 1000
67
21179 117284B
572
189B5 616612
221 7 Chironomid larvae 3 200 171 7 3555 Collembola 1 67 572 221 7 Insect parts 1 67 572 221 7
Mean number of organismssample 1901 Standard deviation 864
b f 2nean num er 0 organIsms m 1632485 Standard deviation 741931
H = 1 52 SD= 046 SR= 1 13 J= 040
A-6
STATION 18 Date 18 April 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom) No of samples 15
Frequency Density (nom2) Total occurrence
Taxa nueber (X) x s D
Nemertea 13 533 7441 9663 Nematomorpha 3 200 171 7 3555 Nematoda 195 1000 111618 63675 Turbell ari a 9 467 5152 6326 ~~ni~~ i~ni~Ql~ 30 867 17172 129B1 Oligochaeta 580 1000 331992 108880 ~QC~i~Ml~ m~nil~n~isectOstracoda
28 18
1000 667
16027 10303
11179 10364
~Q[Q~~iYm sect~Qni2 sect~ci~ gniQQnHarpacticoida
105 1
17
1000 67
400
60102 572
9731
25553 2217
19970 Chironollid larvae 16 667 9158 8B6B
Hean number of organismssample 677 Standard deviation 199
M ean num b I 2er 0 f organIsms AI 580986 Standard deviation 171095
w = 202 SD= 062 SR= 1 10 J= 056
95 C
A-7
STATION 58 Date 18 April 1984 Depth 67 m Salinity (bottom) 00 ppt Temperature (botto) No of samples 15
Frequency Density (nom2) Total occurrence
Taxa number (~) X SD
Nemertea 62 933 35489 26338 Nematoda 224 1000 128218 49903 Turbellaria 9 600 5152 4354 ~nt~sect imni~Q Oligochaeta
1 79
67 1000
572 45220
2217 23506
bnQgYRhY~ Yi~~nE ~Q(~i~Y nil~ni Ostracoda
2 10 19
67 533 600
1145 5724
10876
4434 6214
10989 ~Q[QeniY sectQOiHarpacticoida
30 2
B67 133
17172 1145
12142 3021
Heleidae larvae 6 333 3434 5430 Chironomid larvae 9 400 5152 7B1 5 Chironomid pupae 2 133 1145 3021
Mean number of organismssample 303 Standard deviation 94
I 11 ean num ber 0 f organlsms 2 260442 Standard deviation 81043
H= 233 SO= 070 SR= 1 36 J= 063
97 C
A-B
Frequency Density (nolm 2) Total occurrence -----------------
Taxa number (7) X SD
Nemertea 16 467 9158 10989 Nematoda 266 1000 152258 54541 Turbellaria 23 600 13165 15518 ~l~nH ~Q~iQH 2 133 1145 3021 Oligochaeta 181 1000 103604 56532 bi~hQg~Qn~~ ~it~l~ ~QtQifg mli~lsectisectOstracoda
3 59 15
200 1000 733
1717 33772 8586
3555 23054
7256 ~Q[QQhiY HmQtlsect ~Q[QehiYm sect21tlfQ[lg EQlQQQt~i hQ~i
466 3 1
1000 200 67
266738 171 7 572
75094 3555 221 7
Harpacticoida 30 400 17172 40402 Chironomid larvae 10 533 5724 6214
Mean number of organismssa_pIe 717 Standard deviation 143
I 2Mean number 0 f organlsms m 615330 Standard deviation 122532
H= 226 SO= 072 SR= 119 J= 061
STATION 55 Date 18 April 1984 Depth 30 1ft
Salinity (bottom) 00 ppt Temperature (bottom) 93 C No of SaIIples 15
A-9
STATION 45 Date 4 Hay 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 103 C No of samples 10
Frequency Density (noI2) Total occurrence ---------------- shy
Taxa number (Xl X SD
Neutoda 269 1000 230963 167296 Turbellaria 1 100 859 2715 ~u~yuti Q~iQ ~Ub imni~Q
1 2
100 100
859 171 7
2715 5430
j2~Qn flec Oligochaeta
28 169
BOO 1000
24041 145103
19326 74351
~igeYk~ll iulCIDai ~Q(Qi~Y uini Ostracoda
32 4 5
aoo 400
400
27475 3434 4293
22463 4434 6071
biQQ~~tbt sp ~e(QQbYm mQoi sectampQeD ~nQDisect Chironomid larvae
25 2
578 2
900 200
1000 200
21465 1717
496271 171 7
15279 3620
293820 3620
Mean number of organismssample 111 8 Standard deviation 522
11 b f I 2ean num er 0 organIsms m 95991 5 Standard deviation 447842
H= 193 SD= 065 SR= 118 J= 052
A-10
STATION 18 Date 4 Hay 1984 Depth 34 II
Salinity (bottom) 00 ppt Temperature (bottom) 104 C No of saMples 10
Frequency Density (noI 2 ) occurrence ----------------shy
Taxa (X) X SD
Nemertea 10 600 8SB6 10709 Nuatoda 153 1000 131366 47899 Turbellaria 8 600 6869 6773 ~n1b limnpoundQl Oligochaeta
11 147
700 1000
middot9445 126214
9449 6231 7
~i~g~kXl in1(m~i ~g(2iY OiOi Ostracoda
86 4 1
900 300 100
73840 3434 859
61543 6003 2715
bimoQpoundx1b( sp ~2(QQbiYm mgoiDi ptera adult
3 57
3
300 900 300
2576 48940
2576
4147 21815 4147
Chironomid larvae 4 300 3434 6003 Chironomid pupae 1 100 859 2715
Hean nUMber of orQanismssample 489 Standard deviation 160
b f 2nean nUll er 0 organIsms II 418997 Standard deviation 137721
H= 243 SD= 076 SR= 1 34 J= 066
A-l1
STATION 5B Date 4 Hay 1984 Depth 61 bull Salinity (botto~) 00 ppt Temperature (bottom) 110 C No of suples 10
Frequency Density (nom 2) Total occurrence ---------------- shy
Taxa number (X) X SD
Neertn 41 1000 35203 21206 Nematoda 211 1000 181165 53305 Turbellaria 4 200 3434 7240 Oligochaeta 89 1000 76415 32240 ~i~2~~~11~ iU1(~i~bi1begygny YitQ ~e(biYl ~OiDi OstracDda
4 3
20 1
400 200 BOO 100
3434 2576
17172 859
4434 5795
19829 2715
biue~1bt~ sp ~2(egniY Imeoi sectg11g1O OdD Helei dae larvae
5 32
1 1
400 900 100 100
4293 27475
859 859
6071 18010 2715 2715
Chironomid larvae 7 400 6010 9096
Mean number of organismssample 419 Standard deviation 93
b f 2ean nUll er 0 organIsms m 359753 Standard deviation 79875
H= 221 SD= 068 SR= 138 J= 060
A-12
Frequency Density (nolm 2) occurrence -----------------
Taxa (X) X SD
Nemertea 23 900 1974S 15171 Neutollorpha 1 100 859 271 5 Nellatoda 269 1000 230963 69923 Turbellaria 10 600 8586 991 4 ~~xYnki Q~ampiQ 4 300 3434 6003 ~nb limnipoundQl Oligochaeta
1 79
100 1000
859 67829
2715 40363
~i~Q~kXl io[~i biDe9XQDX ~i[~OBi valvi a
11 3 1
800 300 100
9445 2576 859
6335 4147 271 5
~Q[~poundY mnil~n bimoQampXD[ sp ~Q[QabiY lQO Harpacticoida
18 2
159 1
700 200
1000 100
15455 171 7
135659 859
13904 3620
54272 2715
Chironomid larvae 2 200 171 7 3620 Trichoptera larvae 1 100 859 2715
STATION 55 Date 4 May 1984 Depth 21 m Salinity (bottom) 00 ppt Temperature (bottom) 107 C No of suples 10
Mean number of organismssamples 594 Standard deviation 147
Mean number of organismsm2 501422 Standard deviation 126525
H= 219 aD= 069 SR= 1 63 J= 055
A-13
STATION 45 Date 17 May 1984 Depth 61 m Sal i ni ty (bottom) 01 ppt Temperature (bottom) 121 C No of sampl es 10
Frequency Total occurrence
Taxa nUlllber (7)
NelDertea 1 100 859 2715 Nematoda 163 1000 139952 127996 Polychaeta 1 100 859 2715 ~~~n~h~ imni~Qs Hobsonia florida
2 6
200 600
171 7 5152
3620 4434
Oligochaeta 329 1000 282479 13291 8 ~~lQQYsectk~~12 in~~rmQi 57 900 48940 33142 ~Qr~ipound~2 ffi2niDi 6 500 5152 6003 Ostracoda 5 200 4293 10898 bimDg~yth( SPa 13 600 11162 12176 ~Q(Qebi~m sectQDisect Harpacticaida
2 2
200 100
1717 1717
3620 5430
2poundQttQD poundDQDsectisectDiptera adult
296 1
1000 100
254146 859
172633 271 5
Mean number of organismssample 884 Standard deviation 326
b f I 2nean num er 0 organlss m 759002 Standard deviation 280131
H= 209 SD= 071 SR= 1 33 J= 055
A-14
STATION 18 Date 17 May 1984 Depth 30 m Salinity (bottom) 00 ppt Temperature (bottom) 122 C No of samples 12
Frequency Density (nom2) Total occurrence -----------------
Taxa number (X) X SD
Nematoda 50 833 35775 22815 ~ntb limnipoundQl 3 Oligochaeta 97
250 833
2147 69404
3883 48495
~igQ~~k~ intr~ 27 ~QrQipoundY mnin~i~ 5
667 333
19319 3S7S
19068 5740
Ostracoda 1 83 716 2479 bimnQpound~nr sp 5 ~Q(Q~bY ~mQni S4 ~Q(Q~niY ~QinipoundQ(n 3
333 833 250
3578 60102
2147
5740 43780 3883
fgnQ2Q(i bQ~i 1 sectpoundQtgO poundnQn~i 2 Chironomid larvae 4
83 167 250
716 1431 2862
2479 3342 5592
Mean number of organismssample 235 Standard deviation 116
nean nURl b er 0 f organlslls II 2 201771 Standard devi ati on 99221
H= 236 SD= 075 SR= 1 35 J= 066
A-15
STATION 58 Date 17 May 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) 123 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nemertea 2 100 171 7 5430 Nematoda 75 1000 64395 34404 ~~2Qih~a limQi~Q 2 200 171 7 3620 Oligochaeta 60 1000 51516 33376 ~~igQY~~~12 iQ~[~~gi 2 200 171 7 3620 bitQQ9~Bh~sect Yr~Qsect 3 200 2576 579~
gQ[Qi~Yl ID2Dil~nsectisect Ostracoda
6 6
500 400
5152 5152
6003 8295
binQ~~nr[ sp gg[QQOYm mQQsect sect~QttQn 5n2Q~nsectia Chironomid larvae
2 34
1 1
200 1000
100 100
171 7 29192
859 859
3620 12927 271 5 2715
Mean number of organismssample 194 Standard deviation
2Mean nurn ber 0 f organIsms fA 166568 Standard deviation 56259
H= 225 SD= 072 SR= 1 45 J= 063
A-16
66
STATION 55 Date 17 May 1984 Depth 24 II
Salinity (bottom) 00 ppt Telllperature (bottom) 126 C No of samples 10
Total Frequency occurrence
Taxa nUllber (X) X SD --------------------------------------------------------------~-----------
Nematollorpha 2 200 171 7 3620 Nematoda 63 1000 54092 35297 Oligochaeta 94 1000 80708 44004 ~~iQQY~k~~l iQt~(m~Qi bitnQg~Qh~~ Yi[~Q gQ[QipoundY~ mni~Q~i Ostracoda
10 9 4 2
600 800 300 100
8586 7727 3434 171 7
9050 4874 6003 5430
bimnQ~~ln~[e sp ~Q(QQbiYm mQD ~Q[QQbiYm 2inipoundQ[n~ Chironomid larvae
6 142
3 1
600 1000 200 100
5152 121921
2576 859
4434 50682 5795 2715
Mean number of organismssample 336 Standard deviation 62
2Mean num ber 0 f organisms m 288490 Standard deviation 53421
H= 214 SD= 071 SR= 119 J= 062
A-17
STATION 45 Date 1 June 1984 Depth 61 m Salinity (bottom) 01 ppt Temperature (bottom) 139 C No of samples 10
Total Frequency occurrence
Density (no2)
Taxa nUllber (1) X SD
Nematoda 174 900 149396 132347 Turbellaria 5 200 4293 10898 ~~~QiQ~sect tmQtpoundQ~ ~QQsectQ flQi~sect Oligochaeta ~~iQQysecttygl~ iQl~rm~~i2 ~Q[Qi~~l~ ~~DilgDsectisect Ostracoda
5 20
190 103
12 5
400 900
1000 900
60 (I 400
4293 17172
163134 88436 10303 4293
6071 8095
92563 51524 11304 6071
bimnQpoundytng[ sp ~gQmYsectisect IDg[pound~Qisect ~Q[QQhi~m sectlmQDisect sectpoundQtiQlsectQ pound~Qgsectisect ChironQmid larvae
33 1
10 375
2
900 100 700
1000 200
28334 859
8586 321975
171 7
17196 2715 7010
179201 3620
Mean number of organismssample 935 Standard deviation 254
nurn b 0 f 2lean er organlsms m 802791 Standard deviation 218423
H= 239 SD= 075 SR= 1 22 J= 065
A-18
STATION 18 Date 1 June 1984 Depth 30 AI
Salinity (bottom) 00 ppt Temperature (bottom) 134 C No of samples 11
Frequency Density (no 1m2)
Taxa Total number
occurrence (X)
---------------- shyX SD
Turbellaria 14 636 10928 1157 7 ~~~Qltlg~ ilipoundQ~ Oligochaeta
10 178
727 1000
7805 138937
601 6 67913
~~iQQy~tY~l~ ill~[m~Qi~ 122 636 95227 93619 ~Q[Qipound~ l~i~lsectisect Ostracoda
7 1
455 9 1
5464 78 1
6946 2589
billQylhg[ Spa 16 818 12489 10420 GQ[QQQil HQi~ 139 1000 108496 70934 gQ[Qebi secteiifQ[~ sectQiiQi2 ~Q~sectisect Diptera pupae
1 2 1
9 1 182
11 1
781 1561 781
2589 3473 2589
Chironomid larvae 2 182 1561 3473
Mean number of organismssample 714 Standard deviation 284
nean num b er 0 f organlsms m 2 612728 Standard deviation 244249
H= 232 SD= 075 SR= 1 25 J= 063
A-19
STATION 58 Date 1 June 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 138 C No of samples 10
Frequency Density (noI 2 ) Total occurrence
Taxa number (X) X SD
Nematoda 173 1000 148538 47383 Turbellaria 3 300 2576 4147 Oligochaeta 53 1000 45506 32139 ~giQgY2k~g~ ini~[m~Qi~ bQg91YehY2 Yi[~nsect ~Qr~i~Yl m~nl~n~i
26 1
10
600 100 500
22324 859
8586
3391 2 2715
13424 bimnQpound~Q~[ sp ~Q9~m[Y poundgnitYpoundQlysect ~QtQehiYm ~lQni
4 1
46
200 100
1000
3434 859
39496
8295 2715
22243 Chironomid larvae 1 100 859 271 5
Mean number of organismssample 318 standard deviation 103
M b f I 2ean num er 0 organlsms III 273035 Standard deviation 88842
H = 1 99 SD= 065 SR= 1 08 J= 060
A-20
STATION 55 Date 1 June 1984 Depth 27 m Salinity (bottom) 00 ppt Temp era t u r e (b 0 t tom) 140 C No of samples 10
Frequency Density (nom 2 ) Total occurrence
Taxa nueber (X) X SD
Nematoda 157 1000 134800 69524 Turbellaria 9 400 7727 13696 tlHl~lk ~2~~iQH 1 100 859 2715 Oligochaeta 49 1000 42071 32745 ~~iQQysect~gl~ S[l9sect bHbQghQb~~ Yirl~
10 1
400 100
8586 859
12799 2715
tQ[Qpoundls l2lilUsect bilQHSbg[ sp ~QrQQbil nllQisectHarpacticoida
4 7
134 1
400 500
1000 100
3434 6010
115052 859
4434 7069
44742 271 5
sectpoundQUQlls poundsQgn~sect Chironomid larvae
1 1
100 100
859 859
271 5 2715
Hydracarina 1 100 859 2715
Hean number of organismssample 376 Standard deviation 132
M b f 2ean num er 0 organIsms m 322834 Standard deviation 113127
H= 202 SD= 068 SR= 1 40 J= 055
A-21
STATION 45 Date 18 June 1984 Depth 67 m Salinity (bottom) 01 ppt Temperature (bottom) 149 C No of samples 10
Frequency Density (nom2)
Taxa Total nUllber
occurrence ex) i SD
Nematoda 109 1000 93587 3891 7 Turbell ari a 3 200 2576 5795 ~g~tbg limoipoundQl Q~Qni2 fQ(i~2 Oligochaeta ~gigQ~~Y inl[ggi ~Q[QiSY2 moilo Ostracoda
3 2
194 44
7 3
200 200
1000 1000 200 200
2576 171 7
16656B 37778 6010 2576
5795 3620
118364 36020 12831 5795
bimoQampl~n~[2 sp ~Q[QQbiYm lmgoi Harpacticoida sectpoundQQ1202 pound2022Osect Chironomid larvae
68 1 1
113 2
900 100 100
1000 200
58385 859 859
97022 171 7
97627 2715 2715
73976 3620
Mean number of organismssa_pie 550 Standard deviation 371
Mean nUll ber 0 f organIsms 2II 472230 Standard deviation 318519
H= 242 SD= 077 SR= 1 32 Ja 065
A-22
STATION 18 Date 18 June 1984 Depth 34 m Salinity (bottom) 00 ppt Temperature (bottom) 155 C No of samples 10
Frequency Density (nom 2) Total occurrence ----------------shy
Taxa nUlber (Z) X SD
Neutoda 291 1000 249853 138826 Turbellaria 1 100 859 2715 ~~n~~nki~ sectQ~~iQ~2 ~g~ntbg2 limni~Q9 Oligochaeta
1 3
123
100 300
1000
859 2576
105608
271 5 4147
48240 ~~igQY~~~~9 int~(mgii ~Q[~i~~~ mini~ni bimnQ~ylbg(~ Spa
67 6 5
1000 500 400
57526 5152 4293
40485 6003 6071
~Q(QebiYm ~imQnisect Harpacticoida
80 2
1000 200
68688 171 7
41276 3620
sect~QttQini ~2nig~n~i Chironomid larvae
2 4
200 300
171 7 3434
3620 6003
Mean number of organismssample 585 Standard deviation 194
I 2Mean urn b er 0 f organIsms m 502281 Standard deviation 166943
H= 203 SD= 068 SR= 1 20 J= 057
A-23
STATI ON 58 Date 18 June 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (noI 2) Total occurrence
TaKa number (X) X SD
Nellertea 2 100 1717 5430 Nematoda 160 1000 137376 6361 1 Turbellaria 4 400 3434 4434 Oligochaeta 36 1000 3091 0 14705 ~iQQYik~ Q1rQ 4 300 3434 6003 bitnQgl~ebysect YrDsect ~Q[QiY~ ~~nni biQQpoundY1h[ sp ~Q[Qeng ~ilQD Chironomid larvae
3 1 3
61 1
300 100 300
1000 100
2576 859
2576 52375
859
4147 2715 4147
1428 1 2715
Chironollid pupae 1 100 859 271 5
Mean number of organismssample 276 standard deviation 72
nean nurn b er 0 f organIsms I 2 236974 Standard deviation 61410
H = 1 78 SD= 060 SR= 1 23 J= 051
A-24
STATION 55 Date 18 June 1984 Depth 18 m Salinity (bottom)1 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (no 1m2) occurrence
Taxa (X) X SD
Nematoda 160 1000 137376 43967 Turbellaria 1 100 859 271 5 Oligochaeta 61 1000 52375 31985 ~~iQQY~kY~~ int~[mQi~ ~Q[Qipound~l~ m~nini~ biIDnQ~Ylb[s sp
3 3 3
300 300 300
2576 2576 2576
4147 4147 4147
~Q[Q~bi~ ~slIDQni~ Chironomid larvae
85 6
1000 600
72981 5152
34165 4434
Mean number of organismssample 322 Standard deviation 75
2Mean number 0 f organIsms m 276469 Standard deviation 64099
H= 178 5D= 065 SR= 0B4 J= 059
A-25
Frequency Density (no2) occurrence -----------------
Taxa (7) X SD
Nematoda 104 1000 89294 47409 Turbell ar i a 1 100 859 2715 ~~~nQ~sect imni~Q~ tjQQsectQlis flQig~ Oligochaeta
2 1
297
100 100
1000
171 7 859
255004
5430 271 5
146273 ~~i~QYsect~Y~lls ilr2is gQrQi~y~ IDDilDia
24 4
600 300
20606 3434
27212 6003
Ostracoda 2 200 171 7 3620 biDQSy~b~C~ sp M~QYsectisect m~r~~Qi ~QrQeniy QD Harpacticoida
157 1 1 1
900 100 100 100
134800 859 859 859
73197 2715 2715 2715
sectpoundQttQDs SsDQD 113 900 97022 61656
STATION 45 Date 2 July 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) No of samples 10
172 C
Mean number of organismssample 708 Standard deviation 339
M ean num b er f 20 organisms 607889 Standard deviation 290B22
H= 216 SD= 073 SR= 1 27 J= 058
1-26
STATION 18 Date 2 July 1984 Depth 24 WI
Sal inity (bottom) 00 ppt Temperature (bottom) 172 C No of samples 10
--------------------------------~-----------------------------------------Frequency Density (nom2)
Total occurrence Taxa number (7) X SD
Nematoda 202 1000 173437 113532 ~~~nih~sect mnpoundQ~ Oligochleta
4 102
400 1000
3434 87577
4434 54873
~~igQYsect~Y~12 inl~rmgi2 ~Q[~poundYl~ m~ni~nsectisect bimnQpoundylh~[~ Spa
115 4
15
900 300 900
98739 3434
12879
100720 6003 9274
~Q[QQniY~ sect~QDi~ 55 900 47223 40525 Harpacticoida 1 100 859 2715 sectpoundQiiQlD SDg~DEisect Chironomid larvae
2 6
200 400
1717 5152
3620 7240
Hymenoptera 1 100 859 2715 Hydracarina 1 100 859 2715
Mean number of organismssample 508 Standard deviation 253
2Mean num ber 0 f organIsms m 436169 Standard deviation 217580
H= 225 SD= 074 SR= 1 22 J= 063
A-27
STATION 58 Date 2 July 1984 Depth 58 1
Salinity (bottom) 00 ppt Temperature (bottom) IBO C No of samples 10
Frequency Density (no2) Total occurrence
Taxa number ltX) i SD
Nematoda 151 1000 129649 42729 Turbellaria 1 100 859 2715 01 i gochaeta 41 1000 35203 22698 ~~i~e~~~ int~~m~~ 3 200 2576 5795 btbQglYRhY~ Yir~n~ ~e~~ampy mni~niii bimQeamp~tb~ sp ~e~eQhiY ~mQni Chironomid larvae
1 4 2
68 1
100 300 200
1000 100
859 3434 171 7
58385 859
271 5 6003 3620
1557 1 2715
Mean number of organisassample 272 Standard deviation
I 2Mean num ber 0 f organIsms I 233539 Standard deviation 62546
H = 1 69 SD= 061 SR= 099 J= 053
A-28
73
STATION 55 Date 2 July 1984 Depth 15 III
Salinity (bottom) 00 ppt Temperature (bottom) 182 C No of samples 10
Frequency Density (nom2) occurrence
Taxa (X) X SD
Nematoda 184 1()00 157982 5264B Turbellaria 1 100 859 271 5 Oligochaeta ~~iQQ~sect~Y~ll~ n~[~~Qi~ bitnggYQDYsect Yi[~nsect ~QrQipoundM2 m2ni~nsectisect bimnQpoundYn~[2 sp ~QrQQhiM Qni Harpacticoida
91 2 1 B 2
96 2
1000 200 100 500 200
1000 200
78133 171 7 859
6869 171 7
82426 1111
26058 3620 271 5 1890 3620shy
25980 3620
ChirDnomid larvae 5 400 4293 6071 Chironolllid pupae 1 100 859 2715
Mean number of organismssample 393 Standard deviation 53
2t1ean nUllber Df organlsms III 337430 Standard deviatiDn 45080
H= 187 SD= 067 SR= 116 J= 054
A-29
STATION 45 Date 17 Jul y 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (X) X SD
Nematoda 215 1000 184599 45837 ~~n~b~~ imDipoundQ Qe~Qni fllHi2
3 1
300 100
2576 859
4147 2715
Oligochaeta 305 1000 261873 147955 ~~iQQY~k~ in~rm~2i ~Qr~ipoundYl IDniln~i~ Ostracoda
17 1 2
500 100 200
14590 859
171 7
22554 2715 3620
bmnQpound~ihr sp ~QCQQhiY ~lQD~
176 1
1000 100
151114 859
57125 2715
Harpacticoida 4 300 3434 6003 sectQ~~Qn poundnQnai~ Chironomid larvae
91 5
1000 400
78133 4293
61310 6071
Mean number of organismssample 821 Standard deviation 275
M b f 2ean num er 0 organlsms m 70491 1 Standard deviation 236369
H= 215 SD= 073 SR= 114 J= 060
A-30
STATION 18 Date 17 Jul y 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom 203 C No of samples 10
Frequency Density (001 2 Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 339 1000 291065 119140 Turbellaria 3 200 2576 5795 ~~2~b~~ limnipoundQ12Oligochaeta
4 18S
300 1000
3434 161417
6003 89393
~~iQQy~~~ls in~(ID~Qi bim~Qampy~bg(2 Spa
34 16
800 700
29192 1373B
22967 15252
~g(gebi~m ~21mQni2 Harpacticoida
52 3
1000 200
44647 2576
25212 5795
2ampQ11Q1202 ampS02Qg~2i2 Chironomid larvae
18 10
700 700
15455 8586
13904 701 0
Mean number of organi$mssample 667 Standard deviation IBB
H ean nurn b er 1 20 f organIsms m 572686 Standard deviation 161750
H = 1 99 SD= 065 SR= 090 J= 060
A-31
STATION 58 Date 17 July 1984 Depth 55 AI
Salinity (bottom) 00 ppt Temperature (bottom) 197 C No of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nellatoda 173 1000 14853B 66390 Turbellaria 1 100 859 271 5 ~~~n~hu ini~QA Oligochaeta
1 46
100 1000
859 39496
2715 26293
~gipoundQy~~ygl2 in~rJg~i~ b1nQglYRnY~ Yi( Bivalvia
6 2 1
400 200 100
5152 1717 859
8295 3620 271 5
ei~ IDnH~n~i~ 2 200 171 7 3620 Ostracoda 1 100 959 271 5 biIDQHlh~( Spa ~Q(QRbim ~21Qnisect Diptera pupae
1 94
1
100 1000 100
859 80708
859
2715 35332 2715
Heleidae 1arvae 5 500 4293 4525 Chironomid larvae 1 100 859 2715
Mean number of organismssample 335 Standard deviatiDn 113
Mean number of organismsRI2 287631 Standard deviation 97413
H= 1 86 SO= 064 SR= 155 J= 049
A-32
STATION 55 Date 17 July 1984 Depth 18 m Sali nity (bottom) 00 ppt TeAlperature (bottom) 199 C No of samples 10
Frequency Density (nom2 ) occurrence
Taxa (X) x S D
Nematoda 61 1000 52375 33972 Turbellaria 1 100 859 2715 Oligochaeta 24 900 20606 11590 ~~i2QY~k~~1 iOi[2 bimDQ~xlb~r sp ~Q[QQhi~ sectgni~ Chironomid larvae
3 1
38 3
200 100
1000 300
2576 859
32627 2576
5795 2715
19326 4147
Mean number of organismssample 131 standard deviation 54
M b f 2ean num er 0 organIsms 112477 Standard deviation 46757
H= 184 SD= 066 SR= 085 J= 065
bull
A-33
STATION 45 Date 1 August 1984 Depth 58 m Sal i nity (bottoll) 03 ppt Temperature (bottom) 203 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa nUllber (X) X SD
Nematoda 145 1000 124417 52344 Turbellaria 1 100 859 2715 Mmth~sect iHpoundQ~ Q~~Qi ilQ[i9Oligochaeta
5 3
196
500 300
1000
4293 2576
168286
4525 4147
91064 ~igQYsect~~li int9i Ostracoda
2 3
100 300
171 7 2576
5430 4147
bimnQpoundtl sp ~Q[Q2hiY sectlQni~
240 6
1000 600
206064 5152
73526 4434
sectpoundQtQl poundngnai~Helei dae larvae
1862 1
1000 100
1598713 859
966134 271 ~
Mean number of organismssample 2464 Standard deviation 1156
211 ean num ber 0 f organIsms II 2115590 Standard deviation 992518
H= 124 SD= 041 SR= 089 J= 036
A-34
STATION 1S Date 1 August 1984 Depth 24 II
Salinity (bottom) 00 ppt Temperature (bottom) 198 C No of samp I es 10
Frequency Density (nom2) occurrence ---------------- shy
Taxa (X) X S D
Nuertea 1 100 859 2715 Nellatolllorpha 1 100 859 2715 Nematoda 248 1000 212933 108288 Turbellaria 4 400 3434 4434 ~untb~la Hli~g Oligochaeta
4 206
400 1000
3434 176872
4434 75309
~~igQYli~dli i[t~(gi~ ~QtQpound l binQ~ybt2 sp ~2l~bi Q[i ~2tlgtQ(ila tirisect sectpoundQtel poundl9lla Chironomid larvae
10 1
20 205
1 574
9
500 100 800
1000 100
1000 400
8586 859
17172 176013
859 492836
7727
10709 271 5
14021 48104
271 5 150531
13696
Mean number of organismssample 1284 Standard deviation 290
M b f I 2ean nurn er 0 organIsms III 1102442 Standard deviation 2488B5
H= 211 SD= 071 SR= 1 16 J= 057
A-35
STATION 58 Date 1 August 1984 Depth 55 m Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samp 1es 10
Frequency Densi ty _ ltnom2 ) Total occurrence
Taxa number (7) X SD
Nemertea 1 100 859 2715 Nematoda 22 900 18889 15036 Turbellaria 1 100 859 2715 Oligochaeta 19 700 16313 17385 biiQQgl~QhY~ YiCg~~ 2 200 171 7 3620 ~Q[~i~~l~ m2nil~n2i2 ~Q[QehiYm ~lmQni2
4 164
300 1000
3434 140810
6003 103048
Heleidae larvae 8 500 6869 8868
Mean number of organismssample 221 Standard deviation 111
I 2Mean num ber 0 f organIsms m 189751 Standard deviation 95391
H = L 37 SD= 043 SR= 090 J= 046
A-36
STATION 55 Date 1 August 1984 Depth 15 m Salinity (bottoll) 01 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (i ) X SD
Nemertea 1 100 859 2715 Neutoda 122 1000 104749 7394B Turbellaria 4 300 3434 6003 ~~~~~nt~ secte~poundQa~ Oligochaeta
1 118
100 1000
859 101315
2715 61223
~giQgY~k~~l iot~[m~Qi btbQg~2b~ Y[O ~grQipound~ ~nl~ni b~ngpound~tb~[ Spa
3 1 5 1
200 100 500 100
2576 859
4293 859
5795 2715 4525 2715
~Q[QebiYm ~mQoi sect~QttQ~ ~OQOi Heleidae larvae
42 2 2
800 200 100
36061 171 7 171 7
21341 3620 5430
Chironomid larvae 4 400 3434 4434
Mean number of organismssapIe 306 Standard deviation 169
M b f I 2ean nurn er 0 organIsms m 262732 Standard deviation 145101
H = 198 SD= 067 SR= 1 45 J= 054
A-37
~-- --------------~~-------------
STATION 45 Date 17 August 1984 Depth 61 1
Salinity (bottom) 10 ppt Temperature (bottom) 210 C No of samp 1es 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nematoda 240 1000 206064 130213 ~~h~sect limQ tjQ~~Hi~ fQ[i~~ Oligochaeta
31 2
245
400 100
1000
26617 1717
210357
75228 5430
121374 babgglYQbl~ Yi[~sect 1 100 859 2715 Ostracoda 1 100 859 271 5 biQ~xtb~[ Spa ~~Q~~isect ~[pound~Qisect ~Qgebi HQOi
333 2
143
1000 200
1000
28591 4 171 7
1227BO
106553 3620
106860 sectpoundQUg~ poundg~nsectisect 1738 1000 1492247 68441 7
Mean number of organismssample 2736 Standard deviation 944
M b f I 2ean num er 0 organlslls m 2349130 Standard deviation 810600
H= 172 SD= 056 SR= 079 J= 052
A-38
STATION 18 Date 17 August 1984 Depth 27 III
Sal i ni ty (botto) 01 ppt Temperature (bottom) 214 C No of samples 10
Frequency Density (nom 2 ) occurrence
Taxa (X) X SD
Nematoda 186 1000 159700 62468 ~tgt SPa 2 100 171 7 5430 Turbellaria 8 400 6869 8868 ~~ntbg2 imnipoundQ 12 700 10303 11304 Oligochaeta 283 1000 242984 90509 ~~iQQY~~Y~lls inlgtmggisBivalvia
4 1
400 100
3434 859
4434 271 5
~Qt~i~Y nilnsectisectbimnQpoundttbg[s SPa ~QtQQbi~ islmQDi2
1 17
286
100 900
1000
859 14596
245560
271 5 10747 83461
sectpoundetteln poundDsggnsectisect Chironomid larvae
526 4
1000 3Q0
451624 3434
179610 6003
Mean number of organismssapIe 1330 Standard deviation 162
Mean nurn ber I 20 f organIsms m 1141938 Standard deviation 139389
H= 214 SD= 073 SR= 1 06 J= 060
A-39
STATION 58 Date 17 August 1984 Depth 55 II
Salinity (bottom) 01 ppt Temperature (bottom) 220 C ND of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (7) x S D
Nematoda 68 1000 58385 27689 Turbellar i a 4 200 3434 8295 Oligochaeta 19 800 16313 13084 ~~i~Q~k~~l~ in~~[m~i bitUQ9Y2bYa Yi[~na Bivalvia
3 3 4
300 300 300
2576 2576 3434
4147 4147 6003
gQ[QipoundYl~ mnilDa 1 100 859 2715 binQpoundY~[ sp gQ[Q2UY a~mgnia sect~Qtgl~n ~n~~ni
2 338
6
100 1000 400
171 7 290207
5152
5430 56636 7240
Mean number of organismssample 448 Standard deviation 72
W b f 2lean num er 0 organlsms II 384653 Standard deviation 61988
H = 1 27 SD= 041 SR= 1 02 J= 038
A-40
STATION 55 Date 17 August 1984 Depth 18 m Salinity (bottom) 00 ppt Temperature (bottol) 223 C No of samples 10
Frequency Density (nom 2 ) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 291 1000 249853 118104 Turbellaria 1 100 859 2715 M~ntb~ mni~Q Oligochaeta
1 47
100 1000
859 40354
2715 28347
~~iQQ~sectkY~ll int~[m~gi bitbQQ1YSDY Yi(gn Bivalvia
25 12
6
900 500 400
21465 10303 5152
1231 0 18459 7240
~Q~2ipoundY mnil~ni Ostracoda
11 8
400 600
9445 6869
12442 6773
bmnQpoundYb~r~ SPa 52 1000 44647 19746 ~QrQsbY lmgnisectsQiielo snQ~ni~ Chironomid larvae
43 5
15
1000 400 BOO
36920 4293
12879
21436 6071 8344
Mean number of organismssample 517 Standard deviation 174
M b f I 2ean num er 0 organlsms m 443896 Standard deviation 149431
W = 228 SD= 065 SR= 1 33 J= 062
A-41
STATION 45 Date 29 August 1984 Depth 55 III
Salinity (bottom) 07 ppt Temperature (bottom) 199 C No of samples 10
Frequency Density (noI 2) Total occurrence
Taxa number (X) X SD
Nematoda 192 1000 164851 98380 ~sntbsect limnipoundQlDligochaeta
2 198
200 1000
171 7 170003
3620 67339
~Q[eipoundYls msniln~isect Ostracoda
1 4
100 400
859 3434
2715 4434
bimnQpoundytb[s Spa gQ[Qeniy sect21QOi~ sectpoundQttQlsO poundsOsggOi
164 87
2468
1000 1000 1000
140810 74698
2119025
39283 39460
840890
Mean number of organismssample 311 6 Standard deviation 101 1
ill b f 2nean nUll er 0 organIsms 2675398 Standard deviation 8682B8
W= 116 SD= 036 SR= 060 J= 039
A-42
STATION 18 Date 29 August 1984 Depth 30 bull Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samples 10
Total Frequency occurrence
Densi ty 2
(nom )
Taxa number (~ ) x S D
Nematoda 150 1000 128790 28905 Turbellaria 7 400 6010 9096 ~nh imni~Qj Oligochaeta ~~i~2Y~k~~1 ini~CIDgii bih2g~Qb~ Yi(~U2 Bivalvi a
B 145
1 1 2
600 1000
100 100 200
6869 124497
859 859
171 7
677 3 84732
271S 2715 3620
~Q[Qi~yli miDllgni bimn2pound~ih~C sp ~QtQehiY imQUia Harpacticoida
7 7
265 1
500 300
1000 100
6010 601 0
227529 859
8145 10747
139462 2715
sect~QtiQDi ~Q~Q~i~ Chironomid larvae
2471 2
1000 200
2121601 171 7
1063112 3620
Mean number of organismssample 3067 Standard deviation 121 9
2Mean number 0 f organIsms m 2633326 standard deviation 1046718
H = 1 09 SD= 034 SR= 1 04 J= 029
A-43
STATION 58 Date 29 August 1984 Depth 55 111
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (noI 2 ) Total occurrence -----------------
Taxa nUllber (X) X SD
Nemertea 4 400 3434 4434 Nuatoda 64 1000 54950 25016 Turbellaria 9 400 7727 11047 ~Hl~b limli~Q19 Oligochaeta
1 37
100 1000
859 31769
2715 19006
i~Qyh il(~~ bHtlQSlheln Yl Bivalvia
4 4
20
200 300 400
3434 3434
17172
8215 6003
26541 ~e(ijY l bQ~dlH sp
26 1
700 100
22324 859
25662 2715
~Q[QQhil iQ sectjgUell HD Heleidae larvae
418 20
1
1000 800 100
358895 17172
859
129443 12799 271 5
Mean number of organismssample 609 Standard deviation 175
nean num b er 0 f organIsms 1 111 2 522887 Standard deviation 150164
H= 176 SD= 051 SR= 1 30 J= 047
A-44
I I
I
I
STATION SS
Date 29 August 1984 Depth 21 1
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (no2) Total occurrence
Taxa nUllber (X) x S D
Nematoda ISO 1000 128790 37969 Turbellaria 1 100 859 271 5 Oligochaeta 48 1000 41213 16088 ~i~g~sect~~l iQ~~mgi bi~QQg~gb~sect ~i~nsect
10 14
600 600
eSB6 12020
9050 14137
Bivalvia 4 200 3434 7240 ~Q[Q~Yl niQaa Ostracoda
15 7
700 SOO
12879 6010
15806 7069
bmQg~~~b~ SPa 14 800 12020 8295 ~g[gaby mgni sect~g~~Qn ~ngnai Chironomid larvae
IB4 25 9
1000 900 700
157982 21465
7727
35563 16810 6335shy
Mean number of organismssample 481 Standard deviation B6
2Mean number 0 f organlsms m 412987 Standard deviation 74131
H= 24S SD= 074 SR= 1 23 J= 068
A-45
STATION 45 Date 14 September 1984 Depth 61 11
Salinity (bottom) 03 ppt Temperature (bottom) IB4 C No of samples 10
---------------------------------~----------------------------------------
Taxa TotalnUlllDer
Frequency occ~~~ence
Density (no 2) -----X-------sect7B
Nematoda 189 1000 162275 85233 t1tQ SPa
Turbellaria 2 2
200 100
171 7 171 7
3620 5430
~~~nIng limoifQl t1QQQDi~ flQriQ Oligochaeta
5 19
142
400 800
1000
4293 1631 3
121921
6071 12442 30504
~QQifYl mDl~D bimoQpoundt1hgr Spa Cumacea
19 184
2
800 1000 200
1631 3 157982
171 7
130B4 69541 3620
~Q[QnniYm ~~lmQDi Harpacticoida
118 1
1000 100
10131 5 B59
43367 2715
sectfQIIQD fOQgO Chironomid larvae
1780 1
1000 100
1528308 859
673586 2715
Mean number of organismssample 2464 Standard deviation 874
M ean num b er f 20 organlsms 2115590 Standard deviation 750305
H= 151 SD= 046 SR= 1 07 J= 041
A-46
STATION 18 Date 14 September 1984 Depth 21 III
Salinity (bottom) 01 ppt Temperature (botto) 182 C No of samples 10
Frequency DenSity (nom 2 ) Total occurrence ---------------- shy
Taxa nUlDber (i) X SD
Nemertea 1 100 859 271 5 Nematoda 186 1000 159700 44925 Turbellaria 16 400 13738 20717 ~~Dth~~ limni~Ql Oligochaeta
13 55
700 900
11162 47223
9096 30085
~Q~ei~Yl nil~Qi~ 17 900 14596 7069 bimDg~lbg[ Spa b 500 5152 6003 ~Q[Q2niY ~lgQi~ Harpacti coi da
562 2
1000 200
482533 171 7
136766 3620
sectpoundQttQ~Q~ ~n~ni 791 1000 679153 324290
Mean number of organismssample 1649 Standard deviation 447
I 211ean nUll ber 0 f organIsms I 1415831 Standard deviation 384136
H= 179 SD= 064 SR= 084 J= 054
A-47
STATION 58 Date 14 September 1984 Depth 58 III
Salinity (bottom) 01 ppt Temperature (bottom) 191 C No of sampl es 10
-------------------------------------------~------------------------------Frequency Density (nom 2 )
Total occurrence Taxa number eX) X SD
Nemertea 1 100 859 2715 Nematoda 55 1000 47223 18658 Turbellaria 10 500 8586 11448
1 100 859 2715 Oligochaeta 41 1000 35203 17850 ~~iQQ~~gll iu1g[m~i ~Q[Q~Yl nilD bimnQ~Y~h[ Spa ~Q[Q~hiYm lmgui sectpoundQilg1D poundU2D Chironomid larvae
4 10
2 277
23 4
100 500 200
1000 700 300
3434 8586 171 7
237832 19748 3434
10861 11448 3620
50561 21051 6003
Mean number of organismssample 428 Standard deviation 51
M b f 2ean num er 0 organIsms III 367481 Standard deviation 43743
H= 179 SD= 055 SR= 114 J= 052
A-48
I I
STATION SS Date 14 September 1984 Depth 21 II
Salinity (bottom) 01 ppt Temperature (bottom) 190 C No of samples 10
--------------------------------------------------------------------~-----
Frequency Density (no1I2) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 102 1000 87577 39200 Oligochaeta 34 700 29192 31142 ~iQ2Y~y1 int(mgi~ bithQgl~en~ Yi(gDsect ~Q(~i~Y m~DilgDsecti~ bimDQamp~1h(sect sp ~2(QQhiY slmQD 2poundQiiQlsD ~sD~g~nsecti Chironomid larvae
36 18 16 17
100 16
3
1000 600 800 700
1000 800 300
30910 15455 13738 14596 85860 13738 2576
157BO 20953 10078 14621 32126 10861 4147
Mean number of organismssample 342 Standard deviation 97
2Mean nUllber 0 f organlsms m 293641 Standard deviation 83617
H= 262 SD= 079 SR= 095 J= 083
A-49
Appendix B--Sediment particle size and organic content of the Cathlamet Bay
benthic invertebrate sites 13 March through 14 September
1984
iii
1
Station 18a 48 54 57
Survey 1 1 1 1
Month March March March March
Day 13 13 13 13
Particle size (mm) Phib Percent by weight
gt 40 -2 000 000 000
20- 40 -1 000 000 000
10- 20 0 000 009 000
05- 10 1 018 1079 032
025- 050 2 545 7583 2468
0125- 025 3 8731 1225 6783
00625-0125 4 491 037 657
lt0625 (5-12) 216 067 060
Organic Content 160 116 128
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
b Phi= -log2(sediment particle diameter in mm)
B-1
Station 18a 48 54 57
Survey 2 2 2 2
Month April April April April
Day 5 5 5 5
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 003 093 000
05shy 10 1 005 31 75 023
025shy 050 2 087 5904 2368
0125- 025 3 6316 750 7155
00625-0125 4 3056 026 427
lt0625 (5-12) 533 052 028
Organic Content 081 077 065
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-2
Station 45 55 58
Survey 3 3 3 3
Month April April April April
Day 18 18 18 18
Particle size (mm)
gt 40
Phi
-2
Percent by weight
000 000 000
20shy 40 -1 000 000 000
10shy 20 0 005 009 004
05shy 10 1 010 027 013
025shy 050 2 015 095 225
0125- 025 3 097 536 6111
00625-0125 4 453 2821 2205
lt0625 (5-12) 9420 6511 1442
Organic Content 31 42 14
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-3
Station 18a 45 55 58
Survey 4 4 4 4
Month May May May May
Day 4 4 4 4
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 021
05shy 10 1 000 065 063
025shy 050 2 012 370 230
0125- 025 3 091 4099 4696
00625-0125 4 322 3650 3052
lt0625 (5-12) 9575 1810 1939
Organic Content 330 180 160
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-4
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
5
May
17
000
000
005
016
217
5862
2729
1170
100
45 55 58
5 5 5
May May May
17 17 17
Percent by weight
000 000
000 000
005 008
113 031
325 274
1903 5613
2784 2401
4870 1672
240 110
000
000
000
010
020
079
397
9494
390
B-5
Station 18al 45 55 58
Survey 6 6 6 6
Month June June June June
Day 6 6 6 6
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 020
05shy 10 1 005 051 027
025shy 050 2 005 301 1 79
0125- 025 3 074 3189 5404
00625-0125 4 599 4118 2885
lt0625 (5-12) 9317 2332 1485
Organic Content 340 240 150
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-6
Station
Survey
Month
Day
Particle size Cmm) Phi
gt 40 -2
20shy 40 -1
10shy 20 a
05shy 10 1
025shy 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
7
June
18
000
000
005
029
138
3917
4143
1768
180
45
7
June
18
55 58
7 7
June June
18 18
Percent by weight
000
000
000
010
020
080
427
9464
310
000 000
000 000
000 007
011 022
057 190
957 5286
3023 2642
5957 1853
1 70 110
B-7
Station 18al 45 55 58
Survey 8 8 8 8
Month July July July July
Day 2 2 2 2
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 006 002 006
05shy 10 1 006 0l3 023
025shy 050 2 017 088 171
0125- 025 3 074 2712 5365
00625-0125 4 552 3892 3081
lt0625 (5-12) 9345 3294 l354
Organic Content 410 210 160
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-8
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
9
July
17
000
000
003
013
130
4294
4434
1127
130
45
9
July
17
Percent
000
000
000
006
012
051
046
9885
290
55
9
July
17
by weight
000
000
019
048
091
628
3616
5597
030
58
9
July
17
000
000
004
022
158
5017
3148
1650
140
B-9
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18al
10
August
1
45
10
August
1
55
10
August
1
58
10
August
1
Percent by weight
000 000
000 004
001 004
009 018
018 088
098 306
049 2510
9824 7070
000
005
045
763
3604
4495
932
156
100 190 060
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-10
Station 18 45 55 58
Survey 11 11 11 11
Month August August August August
Day 17 17 17 17
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000 000
20- 40 -1 005 000 000 000
10- 20 0 021 003 000 210
05- 10 1 064 009 000 159
025- 050 2 226 027 045 2656
0125- 025 3 3259 131 712 3719
00625-0125 4 4327 195 1737 1159
lt0625 (5-12) 2098 9635 7506 2097
Organic Content 210 300 160 100
Ii I
B-11
Station
Survey
Month
Day
Particle size (mm) Phi
gt40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
12
August
29
000
000
012
046
186
3465
4498
17 93
241
45
12
August
29
55 58
12 12
August August
29 29
Percent by weight
000
000
002
009
026
118
189
9656
540
000 000
000 000
003 011
011 028
055 1013
859 5033
1596 1827
7476 2089
1 70 120
B-12
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
_-------------------- shy
B-13
STATION 57 Date 13 March 1984 Depth 91 m Salinity (bottom) 00 ppt Temperature (bottom) 63 C No of sampl es 15
Frequency Densi ty (no 81 2) Total occurrence
Taxa number (X) X SD
Nemertea 27 667 15455 13459 Nematoda 8 400 4579 6381 Turbellaria 4 200 2290 5097 Oligochaeta 8 400 4579 6381 ~g[gipound~l mnilui Ostracoda
1 1
67 67
572 572
2217 2217
~Qgml[a spp 1 67 572 2217 ~Q[Qeni~m lmQnisect Harpacticoida
2 1
133 67
1145 572
3021 221 7
Insecta 3 67 171 7 b651 Chironomid larvae 1 b7 572 221 7 Collembola 37 400 21179 65700 Hydracarina 1 67 572 221 7
Mean number of organismssample 63 Standard deviation 82
Mean number of organismsm2 54378 Standard deviation 70029
H= 253 SD= 075 SR= 1 83 J= 068
A-4
STATION 18 Date 5 April 1984 Depth 30 II
Salinity (bottoll) 00 ppt Temperature (bottom) 90 C No of samples 15
Frequency Densi ty (no1I 2) Total occurrence
Taxa number (i ) If S D
Nemertea 11 bOO 6296 6042 Nematomorpha 2 133 1145 3021 Nuatoda 119 1000 6811 6 50947 Turbellaria 20 600 11448 13640 ~~~nin~sect liIDni~Q12 Oligochaeta
33 481
1000 1000
18889 275324
10364 142326
~Q~Qi~Yl m2nil~ni2 23 600 13165 1371 7 Ostracoda 33 933 18889 10861 gQ(QQrriYID sect2mQnisectHarpacti coi da
38 7
933 133
21751 4007
13329 13328
Chironomid larvae 16 667 9158 8868 ColI embola 1 67 572 2217
Mean number of organismssample 523 Standard deviation 227
M b f 2ean num er 0 organIsms m 448762 Standard deviation 194508
H= 202 SD= 059 SR= 114 J= 0S6
A-5
STATION 45 Date 18 April 1984 Depth 64 III
Salinity (bottom) 00 ppt Temperature (bottom) 95 C No of samples 15
Total Frequency occurrence
Density (noI 2 )
Taxa number (X) X SD
Nematoda 171 1000 97890 92277 tyg~ sp Turbellaria
1 29
67 600
572 16600
221 7 23506
H~nng~ imDi~g tQQsectQl fg~ig Oligochaeta ~Q[Qi~Y2 m2niD~i Ostracodamiddot
9 41
367 42
100
400 1000 1000 800
1000
5152 23469
210071 24041 57240
781 5 13563
100542 19254 43134
~Q[Qeniym amQnisectHarpacticoida Heleidae larvae
37 2049
1
933 1000
67
21179 117284B
572
189B5 616612
221 7 Chironomid larvae 3 200 171 7 3555 Collembola 1 67 572 221 7 Insect parts 1 67 572 221 7
Mean number of organismssample 1901 Standard deviation 864
b f 2nean num er 0 organIsms m 1632485 Standard deviation 741931
H = 1 52 SD= 046 SR= 1 13 J= 040
A-6
STATION 18 Date 18 April 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom) No of samples 15
Frequency Density (nom2) Total occurrence
Taxa nueber (X) x s D
Nemertea 13 533 7441 9663 Nematomorpha 3 200 171 7 3555 Nematoda 195 1000 111618 63675 Turbell ari a 9 467 5152 6326 ~~ni~~ i~ni~Ql~ 30 867 17172 129B1 Oligochaeta 580 1000 331992 108880 ~QC~i~Ml~ m~nil~n~isectOstracoda
28 18
1000 667
16027 10303
11179 10364
~Q[Q~~iYm sect~Qni2 sect~ci~ gniQQnHarpacticoida
105 1
17
1000 67
400
60102 572
9731
25553 2217
19970 Chironollid larvae 16 667 9158 8B6B
Hean number of organismssample 677 Standard deviation 199
M ean num b I 2er 0 f organIsms AI 580986 Standard deviation 171095
w = 202 SD= 062 SR= 1 10 J= 056
95 C
A-7
STATION 58 Date 18 April 1984 Depth 67 m Salinity (bottom) 00 ppt Temperature (botto) No of samples 15
Frequency Density (nom2) Total occurrence
Taxa number (~) X SD
Nemertea 62 933 35489 26338 Nematoda 224 1000 128218 49903 Turbellaria 9 600 5152 4354 ~nt~sect imni~Q Oligochaeta
1 79
67 1000
572 45220
2217 23506
bnQgYRhY~ Yi~~nE ~Q(~i~Y nil~ni Ostracoda
2 10 19
67 533 600
1145 5724
10876
4434 6214
10989 ~Q[QeniY sectQOiHarpacticoida
30 2
B67 133
17172 1145
12142 3021
Heleidae larvae 6 333 3434 5430 Chironomid larvae 9 400 5152 7B1 5 Chironomid pupae 2 133 1145 3021
Mean number of organismssample 303 Standard deviation 94
I 11 ean num ber 0 f organlsms 2 260442 Standard deviation 81043
H= 233 SO= 070 SR= 1 36 J= 063
97 C
A-B
Frequency Density (nolm 2) Total occurrence -----------------
Taxa number (7) X SD
Nemertea 16 467 9158 10989 Nematoda 266 1000 152258 54541 Turbellaria 23 600 13165 15518 ~l~nH ~Q~iQH 2 133 1145 3021 Oligochaeta 181 1000 103604 56532 bi~hQg~Qn~~ ~it~l~ ~QtQifg mli~lsectisectOstracoda
3 59 15
200 1000 733
1717 33772 8586
3555 23054
7256 ~Q[QQhiY HmQtlsect ~Q[QehiYm sect21tlfQ[lg EQlQQQt~i hQ~i
466 3 1
1000 200 67
266738 171 7 572
75094 3555 221 7
Harpacticoida 30 400 17172 40402 Chironomid larvae 10 533 5724 6214
Mean number of organismssa_pIe 717 Standard deviation 143
I 2Mean number 0 f organlsms m 615330 Standard deviation 122532
H= 226 SO= 072 SR= 119 J= 061
STATION 55 Date 18 April 1984 Depth 30 1ft
Salinity (bottom) 00 ppt Temperature (bottom) 93 C No of SaIIples 15
A-9
STATION 45 Date 4 Hay 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 103 C No of samples 10
Frequency Density (noI2) Total occurrence ---------------- shy
Taxa number (Xl X SD
Neutoda 269 1000 230963 167296 Turbellaria 1 100 859 2715 ~u~yuti Q~iQ ~Ub imni~Q
1 2
100 100
859 171 7
2715 5430
j2~Qn flec Oligochaeta
28 169
BOO 1000
24041 145103
19326 74351
~igeYk~ll iulCIDai ~Q(Qi~Y uini Ostracoda
32 4 5
aoo 400
400
27475 3434 4293
22463 4434 6071
biQQ~~tbt sp ~e(QQbYm mQoi sectampQeD ~nQDisect Chironomid larvae
25 2
578 2
900 200
1000 200
21465 1717
496271 171 7
15279 3620
293820 3620
Mean number of organismssample 111 8 Standard deviation 522
11 b f I 2ean num er 0 organIsms m 95991 5 Standard deviation 447842
H= 193 SD= 065 SR= 118 J= 052
A-10
STATION 18 Date 4 Hay 1984 Depth 34 II
Salinity (bottom) 00 ppt Temperature (bottom) 104 C No of saMples 10
Frequency Density (noI 2 ) occurrence ----------------shy
Taxa (X) X SD
Nemertea 10 600 8SB6 10709 Nuatoda 153 1000 131366 47899 Turbellaria 8 600 6869 6773 ~n1b limnpoundQl Oligochaeta
11 147
700 1000
middot9445 126214
9449 6231 7
~i~g~kXl in1(m~i ~g(2iY OiOi Ostracoda
86 4 1
900 300 100
73840 3434 859
61543 6003 2715
bimoQpoundx1b( sp ~2(QQbiYm mgoiDi ptera adult
3 57
3
300 900 300
2576 48940
2576
4147 21815 4147
Chironomid larvae 4 300 3434 6003 Chironomid pupae 1 100 859 2715
Hean nUMber of orQanismssample 489 Standard deviation 160
b f 2nean nUll er 0 organIsms II 418997 Standard deviation 137721
H= 243 SD= 076 SR= 1 34 J= 066
A-l1
STATION 5B Date 4 Hay 1984 Depth 61 bull Salinity (botto~) 00 ppt Temperature (bottom) 110 C No of suples 10
Frequency Density (nom 2) Total occurrence ---------------- shy
Taxa number (X) X SD
Neertn 41 1000 35203 21206 Nematoda 211 1000 181165 53305 Turbellaria 4 200 3434 7240 Oligochaeta 89 1000 76415 32240 ~i~2~~~11~ iU1(~i~bi1begygny YitQ ~e(biYl ~OiDi OstracDda
4 3
20 1
400 200 BOO 100
3434 2576
17172 859
4434 5795
19829 2715
biue~1bt~ sp ~2(egniY Imeoi sectg11g1O OdD Helei dae larvae
5 32
1 1
400 900 100 100
4293 27475
859 859
6071 18010 2715 2715
Chironomid larvae 7 400 6010 9096
Mean number of organismssample 419 Standard deviation 93
b f 2ean nUll er 0 organIsms m 359753 Standard deviation 79875
H= 221 SD= 068 SR= 138 J= 060
A-12
Frequency Density (nolm 2) occurrence -----------------
Taxa (X) X SD
Nemertea 23 900 1974S 15171 Neutollorpha 1 100 859 271 5 Nellatoda 269 1000 230963 69923 Turbellaria 10 600 8586 991 4 ~~xYnki Q~ampiQ 4 300 3434 6003 ~nb limnipoundQl Oligochaeta
1 79
100 1000
859 67829
2715 40363
~i~Q~kXl io[~i biDe9XQDX ~i[~OBi valvi a
11 3 1
800 300 100
9445 2576 859
6335 4147 271 5
~Q[~poundY mnil~n bimoQampXD[ sp ~Q[QabiY lQO Harpacticoida
18 2
159 1
700 200
1000 100
15455 171 7
135659 859
13904 3620
54272 2715
Chironomid larvae 2 200 171 7 3620 Trichoptera larvae 1 100 859 2715
STATION 55 Date 4 May 1984 Depth 21 m Salinity (bottom) 00 ppt Temperature (bottom) 107 C No of suples 10
Mean number of organismssamples 594 Standard deviation 147
Mean number of organismsm2 501422 Standard deviation 126525
H= 219 aD= 069 SR= 1 63 J= 055
A-13
STATION 45 Date 17 May 1984 Depth 61 m Sal i ni ty (bottom) 01 ppt Temperature (bottom) 121 C No of sampl es 10
Frequency Total occurrence
Taxa nUlllber (7)
NelDertea 1 100 859 2715 Nematoda 163 1000 139952 127996 Polychaeta 1 100 859 2715 ~~~n~h~ imni~Qs Hobsonia florida
2 6
200 600
171 7 5152
3620 4434
Oligochaeta 329 1000 282479 13291 8 ~~lQQYsectk~~12 in~~rmQi 57 900 48940 33142 ~Qr~ipound~2 ffi2niDi 6 500 5152 6003 Ostracoda 5 200 4293 10898 bimDg~yth( SPa 13 600 11162 12176 ~Q(Qebi~m sectQDisect Harpacticaida
2 2
200 100
1717 1717
3620 5430
2poundQttQD poundDQDsectisectDiptera adult
296 1
1000 100
254146 859
172633 271 5
Mean number of organismssample 884 Standard deviation 326
b f I 2nean num er 0 organlss m 759002 Standard deviation 280131
H= 209 SD= 071 SR= 1 33 J= 055
A-14
STATION 18 Date 17 May 1984 Depth 30 m Salinity (bottom) 00 ppt Temperature (bottom) 122 C No of samples 12
Frequency Density (nom2) Total occurrence -----------------
Taxa number (X) X SD
Nematoda 50 833 35775 22815 ~ntb limnipoundQl 3 Oligochaeta 97
250 833
2147 69404
3883 48495
~igQ~~k~ intr~ 27 ~QrQipoundY mnin~i~ 5
667 333
19319 3S7S
19068 5740
Ostracoda 1 83 716 2479 bimnQpound~nr sp 5 ~Q(Q~bY ~mQni S4 ~Q(Q~niY ~QinipoundQ(n 3
333 833 250
3578 60102
2147
5740 43780 3883
fgnQ2Q(i bQ~i 1 sectpoundQtgO poundnQn~i 2 Chironomid larvae 4
83 167 250
716 1431 2862
2479 3342 5592
Mean number of organismssample 235 Standard deviation 116
nean nURl b er 0 f organlslls II 2 201771 Standard devi ati on 99221
H= 236 SD= 075 SR= 1 35 J= 066
A-15
STATION 58 Date 17 May 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) 123 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nemertea 2 100 171 7 5430 Nematoda 75 1000 64395 34404 ~~2Qih~a limQi~Q 2 200 171 7 3620 Oligochaeta 60 1000 51516 33376 ~~igQY~~~12 iQ~[~~gi 2 200 171 7 3620 bitQQ9~Bh~sect Yr~Qsect 3 200 2576 579~
gQ[Qi~Yl ID2Dil~nsectisect Ostracoda
6 6
500 400
5152 5152
6003 8295
binQ~~nr[ sp gg[QQOYm mQQsect sect~QttQn 5n2Q~nsectia Chironomid larvae
2 34
1 1
200 1000
100 100
171 7 29192
859 859
3620 12927 271 5 2715
Mean number of organismssample 194 Standard deviation
2Mean nurn ber 0 f organIsms fA 166568 Standard deviation 56259
H= 225 SD= 072 SR= 1 45 J= 063
A-16
66
STATION 55 Date 17 May 1984 Depth 24 II
Salinity (bottom) 00 ppt Telllperature (bottom) 126 C No of samples 10
Total Frequency occurrence
Taxa nUllber (X) X SD --------------------------------------------------------------~-----------
Nematollorpha 2 200 171 7 3620 Nematoda 63 1000 54092 35297 Oligochaeta 94 1000 80708 44004 ~~iQQY~k~~l iQt~(m~Qi bitnQg~Qh~~ Yi[~Q gQ[QipoundY~ mni~Q~i Ostracoda
10 9 4 2
600 800 300 100
8586 7727 3434 171 7
9050 4874 6003 5430
bimnQ~~ln~[e sp ~Q(QQbiYm mQD ~Q[QQbiYm 2inipoundQ[n~ Chironomid larvae
6 142
3 1
600 1000 200 100
5152 121921
2576 859
4434 50682 5795 2715
Mean number of organismssample 336 Standard deviation 62
2Mean num ber 0 f organisms m 288490 Standard deviation 53421
H= 214 SD= 071 SR= 119 J= 062
A-17
STATION 45 Date 1 June 1984 Depth 61 m Salinity (bottom) 01 ppt Temperature (bottom) 139 C No of samples 10
Total Frequency occurrence
Density (no2)
Taxa nUllber (1) X SD
Nematoda 174 900 149396 132347 Turbellaria 5 200 4293 10898 ~~~QiQ~sect tmQtpoundQ~ ~QQsectQ flQi~sect Oligochaeta ~~iQQysecttygl~ iQl~rm~~i2 ~Q[Qi~~l~ ~~DilgDsectisect Ostracoda
5 20
190 103
12 5
400 900
1000 900
60 (I 400
4293 17172
163134 88436 10303 4293
6071 8095
92563 51524 11304 6071
bimnQpoundytng[ sp ~gQmYsectisect IDg[pound~Qisect ~Q[QQhi~m sectlmQDisect sectpoundQtiQlsectQ pound~Qgsectisect ChironQmid larvae
33 1
10 375
2
900 100 700
1000 200
28334 859
8586 321975
171 7
17196 2715 7010
179201 3620
Mean number of organismssample 935 Standard deviation 254
nurn b 0 f 2lean er organlsms m 802791 Standard deviation 218423
H= 239 SD= 075 SR= 1 22 J= 065
A-18
STATION 18 Date 1 June 1984 Depth 30 AI
Salinity (bottom) 00 ppt Temperature (bottom) 134 C No of samples 11
Frequency Density (no 1m2)
Taxa Total number
occurrence (X)
---------------- shyX SD
Turbellaria 14 636 10928 1157 7 ~~~Qltlg~ ilipoundQ~ Oligochaeta
10 178
727 1000
7805 138937
601 6 67913
~~iQQy~tY~l~ ill~[m~Qi~ 122 636 95227 93619 ~Q[Qipound~ l~i~lsectisect Ostracoda
7 1
455 9 1
5464 78 1
6946 2589
billQylhg[ Spa 16 818 12489 10420 GQ[QQQil HQi~ 139 1000 108496 70934 gQ[Qebi secteiifQ[~ sectQiiQi2 ~Q~sectisect Diptera pupae
1 2 1
9 1 182
11 1
781 1561 781
2589 3473 2589
Chironomid larvae 2 182 1561 3473
Mean number of organismssample 714 Standard deviation 284
nean num b er 0 f organlsms m 2 612728 Standard deviation 244249
H= 232 SD= 075 SR= 1 25 J= 063
A-19
STATION 58 Date 1 June 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 138 C No of samples 10
Frequency Density (noI 2 ) Total occurrence
Taxa number (X) X SD
Nematoda 173 1000 148538 47383 Turbellaria 3 300 2576 4147 Oligochaeta 53 1000 45506 32139 ~giQgY2k~g~ ini~[m~Qi~ bQg91YehY2 Yi[~nsect ~Qr~i~Yl m~nl~n~i
26 1
10
600 100 500
22324 859
8586
3391 2 2715
13424 bimnQpound~Q~[ sp ~Q9~m[Y poundgnitYpoundQlysect ~QtQehiYm ~lQni
4 1
46
200 100
1000
3434 859
39496
8295 2715
22243 Chironomid larvae 1 100 859 271 5
Mean number of organismssample 318 standard deviation 103
M b f I 2ean num er 0 organlsms III 273035 Standard deviation 88842
H = 1 99 SD= 065 SR= 1 08 J= 060
A-20
STATION 55 Date 1 June 1984 Depth 27 m Salinity (bottom) 00 ppt Temp era t u r e (b 0 t tom) 140 C No of samples 10
Frequency Density (nom 2 ) Total occurrence
Taxa nueber (X) X SD
Nematoda 157 1000 134800 69524 Turbellaria 9 400 7727 13696 tlHl~lk ~2~~iQH 1 100 859 2715 Oligochaeta 49 1000 42071 32745 ~~iQQysect~gl~ S[l9sect bHbQghQb~~ Yirl~
10 1
400 100
8586 859
12799 2715
tQ[Qpoundls l2lilUsect bilQHSbg[ sp ~QrQQbil nllQisectHarpacticoida
4 7
134 1
400 500
1000 100
3434 6010
115052 859
4434 7069
44742 271 5
sectpoundQUQlls poundsQgn~sect Chironomid larvae
1 1
100 100
859 859
271 5 2715
Hydracarina 1 100 859 2715
Hean number of organismssample 376 Standard deviation 132
M b f 2ean num er 0 organIsms m 322834 Standard deviation 113127
H= 202 SD= 068 SR= 1 40 J= 055
A-21
STATION 45 Date 18 June 1984 Depth 67 m Salinity (bottom) 01 ppt Temperature (bottom) 149 C No of samples 10
Frequency Density (nom2)
Taxa Total nUllber
occurrence ex) i SD
Nematoda 109 1000 93587 3891 7 Turbell ari a 3 200 2576 5795 ~g~tbg limoipoundQl Q~Qni2 fQ(i~2 Oligochaeta ~gigQ~~Y inl[ggi ~Q[QiSY2 moilo Ostracoda
3 2
194 44
7 3
200 200
1000 1000 200 200
2576 171 7
16656B 37778 6010 2576
5795 3620
118364 36020 12831 5795
bimoQampl~n~[2 sp ~Q[QQbiYm lmgoi Harpacticoida sectpoundQQ1202 pound2022Osect Chironomid larvae
68 1 1
113 2
900 100 100
1000 200
58385 859 859
97022 171 7
97627 2715 2715
73976 3620
Mean number of organismssa_pie 550 Standard deviation 371
Mean nUll ber 0 f organIsms 2II 472230 Standard deviation 318519
H= 242 SD= 077 SR= 1 32 Ja 065
A-22
STATION 18 Date 18 June 1984 Depth 34 m Salinity (bottom) 00 ppt Temperature (bottom) 155 C No of samples 10
Frequency Density (nom 2) Total occurrence ----------------shy
Taxa nUlber (Z) X SD
Neutoda 291 1000 249853 138826 Turbellaria 1 100 859 2715 ~~n~~nki~ sectQ~~iQ~2 ~g~ntbg2 limni~Q9 Oligochaeta
1 3
123
100 300
1000
859 2576
105608
271 5 4147
48240 ~~igQY~~~~9 int~(mgii ~Q[~i~~~ mini~ni bimnQ~ylbg(~ Spa
67 6 5
1000 500 400
57526 5152 4293
40485 6003 6071
~Q(QebiYm ~imQnisect Harpacticoida
80 2
1000 200
68688 171 7
41276 3620
sect~QttQini ~2nig~n~i Chironomid larvae
2 4
200 300
171 7 3434
3620 6003
Mean number of organismssample 585 Standard deviation 194
I 2Mean urn b er 0 f organIsms m 502281 Standard deviation 166943
H= 203 SD= 068 SR= 1 20 J= 057
A-23
STATI ON 58 Date 18 June 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (noI 2) Total occurrence
TaKa number (X) X SD
Nellertea 2 100 1717 5430 Nematoda 160 1000 137376 6361 1 Turbellaria 4 400 3434 4434 Oligochaeta 36 1000 3091 0 14705 ~iQQYik~ Q1rQ 4 300 3434 6003 bitnQgl~ebysect YrDsect ~Q[QiY~ ~~nni biQQpoundY1h[ sp ~Q[Qeng ~ilQD Chironomid larvae
3 1 3
61 1
300 100 300
1000 100
2576 859
2576 52375
859
4147 2715 4147
1428 1 2715
Chironollid pupae 1 100 859 271 5
Mean number of organismssample 276 standard deviation 72
nean nurn b er 0 f organIsms I 2 236974 Standard deviation 61410
H = 1 78 SD= 060 SR= 1 23 J= 051
A-24
STATION 55 Date 18 June 1984 Depth 18 m Salinity (bottom)1 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (no 1m2) occurrence
Taxa (X) X SD
Nematoda 160 1000 137376 43967 Turbellaria 1 100 859 271 5 Oligochaeta 61 1000 52375 31985 ~~iQQY~kY~~ int~[mQi~ ~Q[Qipound~l~ m~nini~ biIDnQ~Ylb[s sp
3 3 3
300 300 300
2576 2576 2576
4147 4147 4147
~Q[Q~bi~ ~slIDQni~ Chironomid larvae
85 6
1000 600
72981 5152
34165 4434
Mean number of organismssample 322 Standard deviation 75
2Mean number 0 f organIsms m 276469 Standard deviation 64099
H= 178 5D= 065 SR= 0B4 J= 059
A-25
Frequency Density (no2) occurrence -----------------
Taxa (7) X SD
Nematoda 104 1000 89294 47409 Turbell ar i a 1 100 859 2715 ~~~nQ~sect imni~Q~ tjQQsectQlis flQig~ Oligochaeta
2 1
297
100 100
1000
171 7 859
255004
5430 271 5
146273 ~~i~QYsect~Y~lls ilr2is gQrQi~y~ IDDilDia
24 4
600 300
20606 3434
27212 6003
Ostracoda 2 200 171 7 3620 biDQSy~b~C~ sp M~QYsectisect m~r~~Qi ~QrQeniy QD Harpacticoida
157 1 1 1
900 100 100 100
134800 859 859 859
73197 2715 2715 2715
sectpoundQttQDs SsDQD 113 900 97022 61656
STATION 45 Date 2 July 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) No of samples 10
172 C
Mean number of organismssample 708 Standard deviation 339
M ean num b er f 20 organisms 607889 Standard deviation 290B22
H= 216 SD= 073 SR= 1 27 J= 058
1-26
STATION 18 Date 2 July 1984 Depth 24 WI
Sal inity (bottom) 00 ppt Temperature (bottom) 172 C No of samples 10
--------------------------------~-----------------------------------------Frequency Density (nom2)
Total occurrence Taxa number (7) X SD
Nematoda 202 1000 173437 113532 ~~~nih~sect mnpoundQ~ Oligochleta
4 102
400 1000
3434 87577
4434 54873
~~igQYsect~Y~12 inl~rmgi2 ~Q[~poundYl~ m~ni~nsectisect bimnQpoundylh~[~ Spa
115 4
15
900 300 900
98739 3434
12879
100720 6003 9274
~Q[QQniY~ sect~QDi~ 55 900 47223 40525 Harpacticoida 1 100 859 2715 sectpoundQiiQlD SDg~DEisect Chironomid larvae
2 6
200 400
1717 5152
3620 7240
Hymenoptera 1 100 859 2715 Hydracarina 1 100 859 2715
Mean number of organismssample 508 Standard deviation 253
2Mean num ber 0 f organIsms m 436169 Standard deviation 217580
H= 225 SD= 074 SR= 1 22 J= 063
A-27
STATION 58 Date 2 July 1984 Depth 58 1
Salinity (bottom) 00 ppt Temperature (bottom) IBO C No of samples 10
Frequency Density (no2) Total occurrence
Taxa number ltX) i SD
Nematoda 151 1000 129649 42729 Turbellaria 1 100 859 2715 01 i gochaeta 41 1000 35203 22698 ~~i~e~~~ int~~m~~ 3 200 2576 5795 btbQglYRhY~ Yir~n~ ~e~~ampy mni~niii bimQeamp~tb~ sp ~e~eQhiY ~mQni Chironomid larvae
1 4 2
68 1
100 300 200
1000 100
859 3434 171 7
58385 859
271 5 6003 3620
1557 1 2715
Mean number of organisassample 272 Standard deviation
I 2Mean num ber 0 f organIsms I 233539 Standard deviation 62546
H = 1 69 SD= 061 SR= 099 J= 053
A-28
73
STATION 55 Date 2 July 1984 Depth 15 III
Salinity (bottom) 00 ppt Temperature (bottom) 182 C No of samples 10
Frequency Density (nom2) occurrence
Taxa (X) X SD
Nematoda 184 1()00 157982 5264B Turbellaria 1 100 859 271 5 Oligochaeta ~~iQQ~sect~Y~ll~ n~[~~Qi~ bitnggYQDYsect Yi[~nsect ~QrQipoundM2 m2ni~nsectisect bimnQpoundYn~[2 sp ~QrQQhiM Qni Harpacticoida
91 2 1 B 2
96 2
1000 200 100 500 200
1000 200
78133 171 7 859
6869 171 7
82426 1111
26058 3620 271 5 1890 3620shy
25980 3620
ChirDnomid larvae 5 400 4293 6071 Chironolllid pupae 1 100 859 2715
Mean number of organismssample 393 Standard deviation 53
2t1ean nUllber Df organlsms III 337430 Standard deviatiDn 45080
H= 187 SD= 067 SR= 116 J= 054
A-29
STATION 45 Date 17 Jul y 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (X) X SD
Nematoda 215 1000 184599 45837 ~~n~b~~ imDipoundQ Qe~Qni fllHi2
3 1
300 100
2576 859
4147 2715
Oligochaeta 305 1000 261873 147955 ~~iQQY~k~ in~rm~2i ~Qr~ipoundYl IDniln~i~ Ostracoda
17 1 2
500 100 200
14590 859
171 7
22554 2715 3620
bmnQpound~ihr sp ~QCQQhiY ~lQD~
176 1
1000 100
151114 859
57125 2715
Harpacticoida 4 300 3434 6003 sectQ~~Qn poundnQnai~ Chironomid larvae
91 5
1000 400
78133 4293
61310 6071
Mean number of organismssample 821 Standard deviation 275
M b f 2ean num er 0 organlsms m 70491 1 Standard deviation 236369
H= 215 SD= 073 SR= 114 J= 060
A-30
STATION 18 Date 17 Jul y 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom 203 C No of samples 10
Frequency Density (001 2 Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 339 1000 291065 119140 Turbellaria 3 200 2576 5795 ~~2~b~~ limnipoundQ12Oligochaeta
4 18S
300 1000
3434 161417
6003 89393
~~iQQy~~~ls in~(ID~Qi bim~Qampy~bg(2 Spa
34 16
800 700
29192 1373B
22967 15252
~g(gebi~m ~21mQni2 Harpacticoida
52 3
1000 200
44647 2576
25212 5795
2ampQ11Q1202 ampS02Qg~2i2 Chironomid larvae
18 10
700 700
15455 8586
13904 701 0
Mean number of organi$mssample 667 Standard deviation IBB
H ean nurn b er 1 20 f organIsms m 572686 Standard deviation 161750
H = 1 99 SD= 065 SR= 090 J= 060
A-31
STATION 58 Date 17 July 1984 Depth 55 AI
Salinity (bottom) 00 ppt Temperature (bottom) 197 C No of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nellatoda 173 1000 14853B 66390 Turbellaria 1 100 859 271 5 ~~~n~hu ini~QA Oligochaeta
1 46
100 1000
859 39496
2715 26293
~gipoundQy~~ygl2 in~rJg~i~ b1nQglYRnY~ Yi( Bivalvia
6 2 1
400 200 100
5152 1717 859
8295 3620 271 5
ei~ IDnH~n~i~ 2 200 171 7 3620 Ostracoda 1 100 959 271 5 biIDQHlh~( Spa ~Q(QRbim ~21Qnisect Diptera pupae
1 94
1
100 1000 100
859 80708
859
2715 35332 2715
Heleidae 1arvae 5 500 4293 4525 Chironomid larvae 1 100 859 2715
Mean number of organismssample 335 Standard deviatiDn 113
Mean number of organismsRI2 287631 Standard deviation 97413
H= 1 86 SO= 064 SR= 155 J= 049
A-32
STATION 55 Date 17 July 1984 Depth 18 m Sali nity (bottom) 00 ppt TeAlperature (bottom) 199 C No of samples 10
Frequency Density (nom2 ) occurrence
Taxa (X) x S D
Nematoda 61 1000 52375 33972 Turbellaria 1 100 859 2715 Oligochaeta 24 900 20606 11590 ~~i2QY~k~~1 iOi[2 bimDQ~xlb~r sp ~Q[QQhi~ sectgni~ Chironomid larvae
3 1
38 3
200 100
1000 300
2576 859
32627 2576
5795 2715
19326 4147
Mean number of organismssample 131 standard deviation 54
M b f 2ean num er 0 organIsms 112477 Standard deviation 46757
H= 184 SD= 066 SR= 085 J= 065
bull
A-33
STATION 45 Date 1 August 1984 Depth 58 m Sal i nity (bottoll) 03 ppt Temperature (bottom) 203 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa nUllber (X) X SD
Nematoda 145 1000 124417 52344 Turbellaria 1 100 859 2715 Mmth~sect iHpoundQ~ Q~~Qi ilQ[i9Oligochaeta
5 3
196
500 300
1000
4293 2576
168286
4525 4147
91064 ~igQYsect~~li int9i Ostracoda
2 3
100 300
171 7 2576
5430 4147
bimnQpoundtl sp ~Q[Q2hiY sectlQni~
240 6
1000 600
206064 5152
73526 4434
sectpoundQtQl poundngnai~Helei dae larvae
1862 1
1000 100
1598713 859
966134 271 ~
Mean number of organismssample 2464 Standard deviation 1156
211 ean num ber 0 f organIsms II 2115590 Standard deviation 992518
H= 124 SD= 041 SR= 089 J= 036
A-34
STATION 1S Date 1 August 1984 Depth 24 II
Salinity (bottom) 00 ppt Temperature (bottom) 198 C No of samp I es 10
Frequency Density (nom2) occurrence ---------------- shy
Taxa (X) X S D
Nuertea 1 100 859 2715 Nellatolllorpha 1 100 859 2715 Nematoda 248 1000 212933 108288 Turbellaria 4 400 3434 4434 ~untb~la Hli~g Oligochaeta
4 206
400 1000
3434 176872
4434 75309
~~igQYli~dli i[t~(gi~ ~QtQpound l binQ~ybt2 sp ~2l~bi Q[i ~2tlgtQ(ila tirisect sectpoundQtel poundl9lla Chironomid larvae
10 1
20 205
1 574
9
500 100 800
1000 100
1000 400
8586 859
17172 176013
859 492836
7727
10709 271 5
14021 48104
271 5 150531
13696
Mean number of organismssample 1284 Standard deviation 290
M b f I 2ean nurn er 0 organIsms III 1102442 Standard deviation 2488B5
H= 211 SD= 071 SR= 1 16 J= 057
A-35
STATION 58 Date 1 August 1984 Depth 55 m Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samp 1es 10
Frequency Densi ty _ ltnom2 ) Total occurrence
Taxa number (7) X SD
Nemertea 1 100 859 2715 Nematoda 22 900 18889 15036 Turbellaria 1 100 859 2715 Oligochaeta 19 700 16313 17385 biiQQgl~QhY~ YiCg~~ 2 200 171 7 3620 ~Q[~i~~l~ m2nil~n2i2 ~Q[QehiYm ~lmQni2
4 164
300 1000
3434 140810
6003 103048
Heleidae larvae 8 500 6869 8868
Mean number of organismssample 221 Standard deviation 111
I 2Mean num ber 0 f organIsms m 189751 Standard deviation 95391
H = L 37 SD= 043 SR= 090 J= 046
A-36
STATION 55 Date 1 August 1984 Depth 15 m Salinity (bottoll) 01 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (i ) X SD
Nemertea 1 100 859 2715 Neutoda 122 1000 104749 7394B Turbellaria 4 300 3434 6003 ~~~~~nt~ secte~poundQa~ Oligochaeta
1 118
100 1000
859 101315
2715 61223
~giQgY~k~~l iot~[m~Qi btbQg~2b~ Y[O ~grQipound~ ~nl~ni b~ngpound~tb~[ Spa
3 1 5 1
200 100 500 100
2576 859
4293 859
5795 2715 4525 2715
~Q[QebiYm ~mQoi sect~QttQ~ ~OQOi Heleidae larvae
42 2 2
800 200 100
36061 171 7 171 7
21341 3620 5430
Chironomid larvae 4 400 3434 4434
Mean number of organismssapIe 306 Standard deviation 169
M b f I 2ean nurn er 0 organIsms m 262732 Standard deviation 145101
H = 198 SD= 067 SR= 1 45 J= 054
A-37
~-- --------------~~-------------
STATION 45 Date 17 August 1984 Depth 61 1
Salinity (bottom) 10 ppt Temperature (bottom) 210 C No of samp 1es 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nematoda 240 1000 206064 130213 ~~h~sect limQ tjQ~~Hi~ fQ[i~~ Oligochaeta
31 2
245
400 100
1000
26617 1717
210357
75228 5430
121374 babgglYQbl~ Yi[~sect 1 100 859 2715 Ostracoda 1 100 859 271 5 biQ~xtb~[ Spa ~~Q~~isect ~[pound~Qisect ~Qgebi HQOi
333 2
143
1000 200
1000
28591 4 171 7
1227BO
106553 3620
106860 sectpoundQUg~ poundg~nsectisect 1738 1000 1492247 68441 7
Mean number of organismssample 2736 Standard deviation 944
M b f I 2ean num er 0 organlslls m 2349130 Standard deviation 810600
H= 172 SD= 056 SR= 079 J= 052
A-38
STATION 18 Date 17 August 1984 Depth 27 III
Sal i ni ty (botto) 01 ppt Temperature (bottom) 214 C No of samples 10
Frequency Density (nom 2 ) occurrence
Taxa (X) X SD
Nematoda 186 1000 159700 62468 ~tgt SPa 2 100 171 7 5430 Turbellaria 8 400 6869 8868 ~~ntbg2 imnipoundQ 12 700 10303 11304 Oligochaeta 283 1000 242984 90509 ~~iQQY~~Y~lls inlgtmggisBivalvia
4 1
400 100
3434 859
4434 271 5
~Qt~i~Y nilnsectisectbimnQpoundttbg[s SPa ~QtQQbi~ islmQDi2
1 17
286
100 900
1000
859 14596
245560
271 5 10747 83461
sectpoundetteln poundDsggnsectisect Chironomid larvae
526 4
1000 3Q0
451624 3434
179610 6003
Mean number of organismssapIe 1330 Standard deviation 162
Mean nurn ber I 20 f organIsms m 1141938 Standard deviation 139389
H= 214 SD= 073 SR= 1 06 J= 060
A-39
STATION 58 Date 17 August 1984 Depth 55 II
Salinity (bottom) 01 ppt Temperature (bottom) 220 C ND of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (7) x S D
Nematoda 68 1000 58385 27689 Turbellar i a 4 200 3434 8295 Oligochaeta 19 800 16313 13084 ~~i~Q~k~~l~ in~~[m~i bitUQ9Y2bYa Yi[~na Bivalvia
3 3 4
300 300 300
2576 2576 3434
4147 4147 6003
gQ[QipoundYl~ mnilDa 1 100 859 2715 binQpoundY~[ sp gQ[Q2UY a~mgnia sect~Qtgl~n ~n~~ni
2 338
6
100 1000 400
171 7 290207
5152
5430 56636 7240
Mean number of organismssample 448 Standard deviation 72
W b f 2lean num er 0 organlsms II 384653 Standard deviation 61988
H = 1 27 SD= 041 SR= 1 02 J= 038
A-40
STATION 55 Date 17 August 1984 Depth 18 m Salinity (bottom) 00 ppt Temperature (bottol) 223 C No of samples 10
Frequency Density (nom 2 ) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 291 1000 249853 118104 Turbellaria 1 100 859 2715 M~ntb~ mni~Q Oligochaeta
1 47
100 1000
859 40354
2715 28347
~~iQQ~sectkY~ll int~[m~gi bitbQQ1YSDY Yi(gn Bivalvia
25 12
6
900 500 400
21465 10303 5152
1231 0 18459 7240
~Q~2ipoundY mnil~ni Ostracoda
11 8
400 600
9445 6869
12442 6773
bmnQpoundYb~r~ SPa 52 1000 44647 19746 ~QrQsbY lmgnisectsQiielo snQ~ni~ Chironomid larvae
43 5
15
1000 400 BOO
36920 4293
12879
21436 6071 8344
Mean number of organismssample 517 Standard deviation 174
M b f I 2ean num er 0 organlsms m 443896 Standard deviation 149431
W = 228 SD= 065 SR= 1 33 J= 062
A-41
STATION 45 Date 29 August 1984 Depth 55 III
Salinity (bottom) 07 ppt Temperature (bottom) 199 C No of samples 10
Frequency Density (noI 2) Total occurrence
Taxa number (X) X SD
Nematoda 192 1000 164851 98380 ~sntbsect limnipoundQlDligochaeta
2 198
200 1000
171 7 170003
3620 67339
~Q[eipoundYls msniln~isect Ostracoda
1 4
100 400
859 3434
2715 4434
bimnQpoundytb[s Spa gQ[Qeniy sect21QOi~ sectpoundQttQlsO poundsOsggOi
164 87
2468
1000 1000 1000
140810 74698
2119025
39283 39460
840890
Mean number of organismssample 311 6 Standard deviation 101 1
ill b f 2nean nUll er 0 organIsms 2675398 Standard deviation 8682B8
W= 116 SD= 036 SR= 060 J= 039
A-42
STATION 18 Date 29 August 1984 Depth 30 bull Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samples 10
Total Frequency occurrence
Densi ty 2
(nom )
Taxa number (~ ) x S D
Nematoda 150 1000 128790 28905 Turbellaria 7 400 6010 9096 ~nh imni~Qj Oligochaeta ~~i~2Y~k~~1 ini~CIDgii bih2g~Qb~ Yi(~U2 Bivalvi a
B 145
1 1 2
600 1000
100 100 200
6869 124497
859 859
171 7
677 3 84732
271S 2715 3620
~Q[Qi~yli miDllgni bimn2pound~ih~C sp ~QtQehiY imQUia Harpacticoida
7 7
265 1
500 300
1000 100
6010 601 0
227529 859
8145 10747
139462 2715
sect~QtiQDi ~Q~Q~i~ Chironomid larvae
2471 2
1000 200
2121601 171 7
1063112 3620
Mean number of organismssample 3067 Standard deviation 121 9
2Mean number 0 f organIsms m 2633326 standard deviation 1046718
H = 1 09 SD= 034 SR= 1 04 J= 029
A-43
STATION 58 Date 29 August 1984 Depth 55 111
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (noI 2 ) Total occurrence -----------------
Taxa nUllber (X) X SD
Nemertea 4 400 3434 4434 Nuatoda 64 1000 54950 25016 Turbellaria 9 400 7727 11047 ~Hl~b limli~Q19 Oligochaeta
1 37
100 1000
859 31769
2715 19006
i~Qyh il(~~ bHtlQSlheln Yl Bivalvia
4 4
20
200 300 400
3434 3434
17172
8215 6003
26541 ~e(ijY l bQ~dlH sp
26 1
700 100
22324 859
25662 2715
~Q[QQhil iQ sectjgUell HD Heleidae larvae
418 20
1
1000 800 100
358895 17172
859
129443 12799 271 5
Mean number of organismssample 609 Standard deviation 175
nean num b er 0 f organIsms 1 111 2 522887 Standard deviation 150164
H= 176 SD= 051 SR= 1 30 J= 047
A-44
I I
I
I
STATION SS
Date 29 August 1984 Depth 21 1
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (no2) Total occurrence
Taxa nUllber (X) x S D
Nematoda ISO 1000 128790 37969 Turbellaria 1 100 859 271 5 Oligochaeta 48 1000 41213 16088 ~i~g~sect~~l iQ~~mgi bi~QQg~gb~sect ~i~nsect
10 14
600 600
eSB6 12020
9050 14137
Bivalvia 4 200 3434 7240 ~Q[Q~Yl niQaa Ostracoda
15 7
700 SOO
12879 6010
15806 7069
bmQg~~~b~ SPa 14 800 12020 8295 ~g[gaby mgni sect~g~~Qn ~ngnai Chironomid larvae
IB4 25 9
1000 900 700
157982 21465
7727
35563 16810 6335shy
Mean number of organismssample 481 Standard deviation B6
2Mean number 0 f organlsms m 412987 Standard deviation 74131
H= 24S SD= 074 SR= 1 23 J= 068
A-45
STATION 45 Date 14 September 1984 Depth 61 11
Salinity (bottom) 03 ppt Temperature (bottom) IB4 C No of samples 10
---------------------------------~----------------------------------------
Taxa TotalnUlllDer
Frequency occ~~~ence
Density (no 2) -----X-------sect7B
Nematoda 189 1000 162275 85233 t1tQ SPa
Turbellaria 2 2
200 100
171 7 171 7
3620 5430
~~~nIng limoifQl t1QQQDi~ flQriQ Oligochaeta
5 19
142
400 800
1000
4293 1631 3
121921
6071 12442 30504
~QQifYl mDl~D bimoQpoundt1hgr Spa Cumacea
19 184
2
800 1000 200
1631 3 157982
171 7
130B4 69541 3620
~Q[QnniYm ~~lmQDi Harpacticoida
118 1
1000 100
10131 5 B59
43367 2715
sectfQIIQD fOQgO Chironomid larvae
1780 1
1000 100
1528308 859
673586 2715
Mean number of organismssample 2464 Standard deviation 874
M ean num b er f 20 organlsms 2115590 Standard deviation 750305
H= 151 SD= 046 SR= 1 07 J= 041
A-46
STATION 18 Date 14 September 1984 Depth 21 III
Salinity (bottom) 01 ppt Temperature (botto) 182 C No of samples 10
Frequency DenSity (nom 2 ) Total occurrence ---------------- shy
Taxa nUlDber (i) X SD
Nemertea 1 100 859 271 5 Nematoda 186 1000 159700 44925 Turbellaria 16 400 13738 20717 ~~Dth~~ limni~Ql Oligochaeta
13 55
700 900
11162 47223
9096 30085
~Q~ei~Yl nil~Qi~ 17 900 14596 7069 bimDg~lbg[ Spa b 500 5152 6003 ~Q[Q2niY ~lgQi~ Harpacti coi da
562 2
1000 200
482533 171 7
136766 3620
sectpoundQttQ~Q~ ~n~ni 791 1000 679153 324290
Mean number of organismssample 1649 Standard deviation 447
I 211ean nUll ber 0 f organIsms I 1415831 Standard deviation 384136
H= 179 SD= 064 SR= 084 J= 054
A-47
STATION 58 Date 14 September 1984 Depth 58 III
Salinity (bottom) 01 ppt Temperature (bottom) 191 C No of sampl es 10
-------------------------------------------~------------------------------Frequency Density (nom 2 )
Total occurrence Taxa number eX) X SD
Nemertea 1 100 859 2715 Nematoda 55 1000 47223 18658 Turbellaria 10 500 8586 11448
1 100 859 2715 Oligochaeta 41 1000 35203 17850 ~~iQQ~~gll iu1g[m~i ~Q[Q~Yl nilD bimnQ~Y~h[ Spa ~Q[Q~hiYm lmgui sectpoundQilg1D poundU2D Chironomid larvae
4 10
2 277
23 4
100 500 200
1000 700 300
3434 8586 171 7
237832 19748 3434
10861 11448 3620
50561 21051 6003
Mean number of organismssample 428 Standard deviation 51
M b f 2ean num er 0 organIsms III 367481 Standard deviation 43743
H= 179 SD= 055 SR= 114 J= 052
A-48
I I
STATION SS Date 14 September 1984 Depth 21 II
Salinity (bottom) 01 ppt Temperature (bottom) 190 C No of samples 10
--------------------------------------------------------------------~-----
Frequency Density (no1I2) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 102 1000 87577 39200 Oligochaeta 34 700 29192 31142 ~iQ2Y~y1 int(mgi~ bithQgl~en~ Yi(gDsect ~Q(~i~Y m~DilgDsecti~ bimDQamp~1h(sect sp ~2(QQhiY slmQD 2poundQiiQlsD ~sD~g~nsecti Chironomid larvae
36 18 16 17
100 16
3
1000 600 800 700
1000 800 300
30910 15455 13738 14596 85860 13738 2576
157BO 20953 10078 14621 32126 10861 4147
Mean number of organismssample 342 Standard deviation 97
2Mean nUllber 0 f organlsms m 293641 Standard deviation 83617
H= 262 SD= 079 SR= 095 J= 083
A-49
Appendix B--Sediment particle size and organic content of the Cathlamet Bay
benthic invertebrate sites 13 March through 14 September
1984
iii
1
Station 18a 48 54 57
Survey 1 1 1 1
Month March March March March
Day 13 13 13 13
Particle size (mm) Phib Percent by weight
gt 40 -2 000 000 000
20- 40 -1 000 000 000
10- 20 0 000 009 000
05- 10 1 018 1079 032
025- 050 2 545 7583 2468
0125- 025 3 8731 1225 6783
00625-0125 4 491 037 657
lt0625 (5-12) 216 067 060
Organic Content 160 116 128
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
b Phi= -log2(sediment particle diameter in mm)
B-1
Station 18a 48 54 57
Survey 2 2 2 2
Month April April April April
Day 5 5 5 5
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 003 093 000
05shy 10 1 005 31 75 023
025shy 050 2 087 5904 2368
0125- 025 3 6316 750 7155
00625-0125 4 3056 026 427
lt0625 (5-12) 533 052 028
Organic Content 081 077 065
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-2
Station 45 55 58
Survey 3 3 3 3
Month April April April April
Day 18 18 18 18
Particle size (mm)
gt 40
Phi
-2
Percent by weight
000 000 000
20shy 40 -1 000 000 000
10shy 20 0 005 009 004
05shy 10 1 010 027 013
025shy 050 2 015 095 225
0125- 025 3 097 536 6111
00625-0125 4 453 2821 2205
lt0625 (5-12) 9420 6511 1442
Organic Content 31 42 14
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-3
Station 18a 45 55 58
Survey 4 4 4 4
Month May May May May
Day 4 4 4 4
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 021
05shy 10 1 000 065 063
025shy 050 2 012 370 230
0125- 025 3 091 4099 4696
00625-0125 4 322 3650 3052
lt0625 (5-12) 9575 1810 1939
Organic Content 330 180 160
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-4
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
5
May
17
000
000
005
016
217
5862
2729
1170
100
45 55 58
5 5 5
May May May
17 17 17
Percent by weight
000 000
000 000
005 008
113 031
325 274
1903 5613
2784 2401
4870 1672
240 110
000
000
000
010
020
079
397
9494
390
B-5
Station 18al 45 55 58
Survey 6 6 6 6
Month June June June June
Day 6 6 6 6
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 020
05shy 10 1 005 051 027
025shy 050 2 005 301 1 79
0125- 025 3 074 3189 5404
00625-0125 4 599 4118 2885
lt0625 (5-12) 9317 2332 1485
Organic Content 340 240 150
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-6
Station
Survey
Month
Day
Particle size Cmm) Phi
gt 40 -2
20shy 40 -1
10shy 20 a
05shy 10 1
025shy 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
7
June
18
000
000
005
029
138
3917
4143
1768
180
45
7
June
18
55 58
7 7
June June
18 18
Percent by weight
000
000
000
010
020
080
427
9464
310
000 000
000 000
000 007
011 022
057 190
957 5286
3023 2642
5957 1853
1 70 110
B-7
Station 18al 45 55 58
Survey 8 8 8 8
Month July July July July
Day 2 2 2 2
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 006 002 006
05shy 10 1 006 0l3 023
025shy 050 2 017 088 171
0125- 025 3 074 2712 5365
00625-0125 4 552 3892 3081
lt0625 (5-12) 9345 3294 l354
Organic Content 410 210 160
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-8
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
9
July
17
000
000
003
013
130
4294
4434
1127
130
45
9
July
17
Percent
000
000
000
006
012
051
046
9885
290
55
9
July
17
by weight
000
000
019
048
091
628
3616
5597
030
58
9
July
17
000
000
004
022
158
5017
3148
1650
140
B-9
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18al
10
August
1
45
10
August
1
55
10
August
1
58
10
August
1
Percent by weight
000 000
000 004
001 004
009 018
018 088
098 306
049 2510
9824 7070
000
005
045
763
3604
4495
932
156
100 190 060
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-10
Station 18 45 55 58
Survey 11 11 11 11
Month August August August August
Day 17 17 17 17
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000 000
20- 40 -1 005 000 000 000
10- 20 0 021 003 000 210
05- 10 1 064 009 000 159
025- 050 2 226 027 045 2656
0125- 025 3 3259 131 712 3719
00625-0125 4 4327 195 1737 1159
lt0625 (5-12) 2098 9635 7506 2097
Organic Content 210 300 160 100
Ii I
B-11
Station
Survey
Month
Day
Particle size (mm) Phi
gt40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
12
August
29
000
000
012
046
186
3465
4498
17 93
241
45
12
August
29
55 58
12 12
August August
29 29
Percent by weight
000
000
002
009
026
118
189
9656
540
000 000
000 000
003 011
011 028
055 1013
859 5033
1596 1827
7476 2089
1 70 120
B-12
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
_-------------------- shy
B-13
STATION 18 Date 5 April 1984 Depth 30 II
Salinity (bottoll) 00 ppt Temperature (bottom) 90 C No of samples 15
Frequency Densi ty (no1I 2) Total occurrence
Taxa number (i ) If S D
Nemertea 11 bOO 6296 6042 Nematomorpha 2 133 1145 3021 Nuatoda 119 1000 6811 6 50947 Turbellaria 20 600 11448 13640 ~~~nin~sect liIDni~Q12 Oligochaeta
33 481
1000 1000
18889 275324
10364 142326
~Q~Qi~Yl m2nil~ni2 23 600 13165 1371 7 Ostracoda 33 933 18889 10861 gQ(QQrriYID sect2mQnisectHarpacti coi da
38 7
933 133
21751 4007
13329 13328
Chironomid larvae 16 667 9158 8868 ColI embola 1 67 572 2217
Mean number of organismssample 523 Standard deviation 227
M b f 2ean num er 0 organIsms m 448762 Standard deviation 194508
H= 202 SD= 059 SR= 114 J= 0S6
A-5
STATION 45 Date 18 April 1984 Depth 64 III
Salinity (bottom) 00 ppt Temperature (bottom) 95 C No of samples 15
Total Frequency occurrence
Density (noI 2 )
Taxa number (X) X SD
Nematoda 171 1000 97890 92277 tyg~ sp Turbellaria
1 29
67 600
572 16600
221 7 23506
H~nng~ imDi~g tQQsectQl fg~ig Oligochaeta ~Q[Qi~Y2 m2niD~i Ostracodamiddot
9 41
367 42
100
400 1000 1000 800
1000
5152 23469
210071 24041 57240
781 5 13563
100542 19254 43134
~Q[Qeniym amQnisectHarpacticoida Heleidae larvae
37 2049
1
933 1000
67
21179 117284B
572
189B5 616612
221 7 Chironomid larvae 3 200 171 7 3555 Collembola 1 67 572 221 7 Insect parts 1 67 572 221 7
Mean number of organismssample 1901 Standard deviation 864
b f 2nean num er 0 organIsms m 1632485 Standard deviation 741931
H = 1 52 SD= 046 SR= 1 13 J= 040
A-6
STATION 18 Date 18 April 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom) No of samples 15
Frequency Density (nom2) Total occurrence
Taxa nueber (X) x s D
Nemertea 13 533 7441 9663 Nematomorpha 3 200 171 7 3555 Nematoda 195 1000 111618 63675 Turbell ari a 9 467 5152 6326 ~~ni~~ i~ni~Ql~ 30 867 17172 129B1 Oligochaeta 580 1000 331992 108880 ~QC~i~Ml~ m~nil~n~isectOstracoda
28 18
1000 667
16027 10303
11179 10364
~Q[Q~~iYm sect~Qni2 sect~ci~ gniQQnHarpacticoida
105 1
17
1000 67
400
60102 572
9731
25553 2217
19970 Chironollid larvae 16 667 9158 8B6B
Hean number of organismssample 677 Standard deviation 199
M ean num b I 2er 0 f organIsms AI 580986 Standard deviation 171095
w = 202 SD= 062 SR= 1 10 J= 056
95 C
A-7
STATION 58 Date 18 April 1984 Depth 67 m Salinity (bottom) 00 ppt Temperature (botto) No of samples 15
Frequency Density (nom2) Total occurrence
Taxa number (~) X SD
Nemertea 62 933 35489 26338 Nematoda 224 1000 128218 49903 Turbellaria 9 600 5152 4354 ~nt~sect imni~Q Oligochaeta
1 79
67 1000
572 45220
2217 23506
bnQgYRhY~ Yi~~nE ~Q(~i~Y nil~ni Ostracoda
2 10 19
67 533 600
1145 5724
10876
4434 6214
10989 ~Q[QeniY sectQOiHarpacticoida
30 2
B67 133
17172 1145
12142 3021
Heleidae larvae 6 333 3434 5430 Chironomid larvae 9 400 5152 7B1 5 Chironomid pupae 2 133 1145 3021
Mean number of organismssample 303 Standard deviation 94
I 11 ean num ber 0 f organlsms 2 260442 Standard deviation 81043
H= 233 SO= 070 SR= 1 36 J= 063
97 C
A-B
Frequency Density (nolm 2) Total occurrence -----------------
Taxa number (7) X SD
Nemertea 16 467 9158 10989 Nematoda 266 1000 152258 54541 Turbellaria 23 600 13165 15518 ~l~nH ~Q~iQH 2 133 1145 3021 Oligochaeta 181 1000 103604 56532 bi~hQg~Qn~~ ~it~l~ ~QtQifg mli~lsectisectOstracoda
3 59 15
200 1000 733
1717 33772 8586
3555 23054
7256 ~Q[QQhiY HmQtlsect ~Q[QehiYm sect21tlfQ[lg EQlQQQt~i hQ~i
466 3 1
1000 200 67
266738 171 7 572
75094 3555 221 7
Harpacticoida 30 400 17172 40402 Chironomid larvae 10 533 5724 6214
Mean number of organismssa_pIe 717 Standard deviation 143
I 2Mean number 0 f organlsms m 615330 Standard deviation 122532
H= 226 SO= 072 SR= 119 J= 061
STATION 55 Date 18 April 1984 Depth 30 1ft
Salinity (bottom) 00 ppt Temperature (bottom) 93 C No of SaIIples 15
A-9
STATION 45 Date 4 Hay 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 103 C No of samples 10
Frequency Density (noI2) Total occurrence ---------------- shy
Taxa number (Xl X SD
Neutoda 269 1000 230963 167296 Turbellaria 1 100 859 2715 ~u~yuti Q~iQ ~Ub imni~Q
1 2
100 100
859 171 7
2715 5430
j2~Qn flec Oligochaeta
28 169
BOO 1000
24041 145103
19326 74351
~igeYk~ll iulCIDai ~Q(Qi~Y uini Ostracoda
32 4 5
aoo 400
400
27475 3434 4293
22463 4434 6071
biQQ~~tbt sp ~e(QQbYm mQoi sectampQeD ~nQDisect Chironomid larvae
25 2
578 2
900 200
1000 200
21465 1717
496271 171 7
15279 3620
293820 3620
Mean number of organismssample 111 8 Standard deviation 522
11 b f I 2ean num er 0 organIsms m 95991 5 Standard deviation 447842
H= 193 SD= 065 SR= 118 J= 052
A-10
STATION 18 Date 4 Hay 1984 Depth 34 II
Salinity (bottom) 00 ppt Temperature (bottom) 104 C No of saMples 10
Frequency Density (noI 2 ) occurrence ----------------shy
Taxa (X) X SD
Nemertea 10 600 8SB6 10709 Nuatoda 153 1000 131366 47899 Turbellaria 8 600 6869 6773 ~n1b limnpoundQl Oligochaeta
11 147
700 1000
middot9445 126214
9449 6231 7
~i~g~kXl in1(m~i ~g(2iY OiOi Ostracoda
86 4 1
900 300 100
73840 3434 859
61543 6003 2715
bimoQpoundx1b( sp ~2(QQbiYm mgoiDi ptera adult
3 57
3
300 900 300
2576 48940
2576
4147 21815 4147
Chironomid larvae 4 300 3434 6003 Chironomid pupae 1 100 859 2715
Hean nUMber of orQanismssample 489 Standard deviation 160
b f 2nean nUll er 0 organIsms II 418997 Standard deviation 137721
H= 243 SD= 076 SR= 1 34 J= 066
A-l1
STATION 5B Date 4 Hay 1984 Depth 61 bull Salinity (botto~) 00 ppt Temperature (bottom) 110 C No of suples 10
Frequency Density (nom 2) Total occurrence ---------------- shy
Taxa number (X) X SD
Neertn 41 1000 35203 21206 Nematoda 211 1000 181165 53305 Turbellaria 4 200 3434 7240 Oligochaeta 89 1000 76415 32240 ~i~2~~~11~ iU1(~i~bi1begygny YitQ ~e(biYl ~OiDi OstracDda
4 3
20 1
400 200 BOO 100
3434 2576
17172 859
4434 5795
19829 2715
biue~1bt~ sp ~2(egniY Imeoi sectg11g1O OdD Helei dae larvae
5 32
1 1
400 900 100 100
4293 27475
859 859
6071 18010 2715 2715
Chironomid larvae 7 400 6010 9096
Mean number of organismssample 419 Standard deviation 93
b f 2ean nUll er 0 organIsms m 359753 Standard deviation 79875
H= 221 SD= 068 SR= 138 J= 060
A-12
Frequency Density (nolm 2) occurrence -----------------
Taxa (X) X SD
Nemertea 23 900 1974S 15171 Neutollorpha 1 100 859 271 5 Nellatoda 269 1000 230963 69923 Turbellaria 10 600 8586 991 4 ~~xYnki Q~ampiQ 4 300 3434 6003 ~nb limnipoundQl Oligochaeta
1 79
100 1000
859 67829
2715 40363
~i~Q~kXl io[~i biDe9XQDX ~i[~OBi valvi a
11 3 1
800 300 100
9445 2576 859
6335 4147 271 5
~Q[~poundY mnil~n bimoQampXD[ sp ~Q[QabiY lQO Harpacticoida
18 2
159 1
700 200
1000 100
15455 171 7
135659 859
13904 3620
54272 2715
Chironomid larvae 2 200 171 7 3620 Trichoptera larvae 1 100 859 2715
STATION 55 Date 4 May 1984 Depth 21 m Salinity (bottom) 00 ppt Temperature (bottom) 107 C No of suples 10
Mean number of organismssamples 594 Standard deviation 147
Mean number of organismsm2 501422 Standard deviation 126525
H= 219 aD= 069 SR= 1 63 J= 055
A-13
STATION 45 Date 17 May 1984 Depth 61 m Sal i ni ty (bottom) 01 ppt Temperature (bottom) 121 C No of sampl es 10
Frequency Total occurrence
Taxa nUlllber (7)
NelDertea 1 100 859 2715 Nematoda 163 1000 139952 127996 Polychaeta 1 100 859 2715 ~~~n~h~ imni~Qs Hobsonia florida
2 6
200 600
171 7 5152
3620 4434
Oligochaeta 329 1000 282479 13291 8 ~~lQQYsectk~~12 in~~rmQi 57 900 48940 33142 ~Qr~ipound~2 ffi2niDi 6 500 5152 6003 Ostracoda 5 200 4293 10898 bimDg~yth( SPa 13 600 11162 12176 ~Q(Qebi~m sectQDisect Harpacticaida
2 2
200 100
1717 1717
3620 5430
2poundQttQD poundDQDsectisectDiptera adult
296 1
1000 100
254146 859
172633 271 5
Mean number of organismssample 884 Standard deviation 326
b f I 2nean num er 0 organlss m 759002 Standard deviation 280131
H= 209 SD= 071 SR= 1 33 J= 055
A-14
STATION 18 Date 17 May 1984 Depth 30 m Salinity (bottom) 00 ppt Temperature (bottom) 122 C No of samples 12
Frequency Density (nom2) Total occurrence -----------------
Taxa number (X) X SD
Nematoda 50 833 35775 22815 ~ntb limnipoundQl 3 Oligochaeta 97
250 833
2147 69404
3883 48495
~igQ~~k~ intr~ 27 ~QrQipoundY mnin~i~ 5
667 333
19319 3S7S
19068 5740
Ostracoda 1 83 716 2479 bimnQpound~nr sp 5 ~Q(Q~bY ~mQni S4 ~Q(Q~niY ~QinipoundQ(n 3
333 833 250
3578 60102
2147
5740 43780 3883
fgnQ2Q(i bQ~i 1 sectpoundQtgO poundnQn~i 2 Chironomid larvae 4
83 167 250
716 1431 2862
2479 3342 5592
Mean number of organismssample 235 Standard deviation 116
nean nURl b er 0 f organlslls II 2 201771 Standard devi ati on 99221
H= 236 SD= 075 SR= 1 35 J= 066
A-15
STATION 58 Date 17 May 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) 123 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nemertea 2 100 171 7 5430 Nematoda 75 1000 64395 34404 ~~2Qih~a limQi~Q 2 200 171 7 3620 Oligochaeta 60 1000 51516 33376 ~~igQY~~~12 iQ~[~~gi 2 200 171 7 3620 bitQQ9~Bh~sect Yr~Qsect 3 200 2576 579~
gQ[Qi~Yl ID2Dil~nsectisect Ostracoda
6 6
500 400
5152 5152
6003 8295
binQ~~nr[ sp gg[QQOYm mQQsect sect~QttQn 5n2Q~nsectia Chironomid larvae
2 34
1 1
200 1000
100 100
171 7 29192
859 859
3620 12927 271 5 2715
Mean number of organismssample 194 Standard deviation
2Mean nurn ber 0 f organIsms fA 166568 Standard deviation 56259
H= 225 SD= 072 SR= 1 45 J= 063
A-16
66
STATION 55 Date 17 May 1984 Depth 24 II
Salinity (bottom) 00 ppt Telllperature (bottom) 126 C No of samples 10
Total Frequency occurrence
Taxa nUllber (X) X SD --------------------------------------------------------------~-----------
Nematollorpha 2 200 171 7 3620 Nematoda 63 1000 54092 35297 Oligochaeta 94 1000 80708 44004 ~~iQQY~k~~l iQt~(m~Qi bitnQg~Qh~~ Yi[~Q gQ[QipoundY~ mni~Q~i Ostracoda
10 9 4 2
600 800 300 100
8586 7727 3434 171 7
9050 4874 6003 5430
bimnQ~~ln~[e sp ~Q(QQbiYm mQD ~Q[QQbiYm 2inipoundQ[n~ Chironomid larvae
6 142
3 1
600 1000 200 100
5152 121921
2576 859
4434 50682 5795 2715
Mean number of organismssample 336 Standard deviation 62
2Mean num ber 0 f organisms m 288490 Standard deviation 53421
H= 214 SD= 071 SR= 119 J= 062
A-17
STATION 45 Date 1 June 1984 Depth 61 m Salinity (bottom) 01 ppt Temperature (bottom) 139 C No of samples 10
Total Frequency occurrence
Density (no2)
Taxa nUllber (1) X SD
Nematoda 174 900 149396 132347 Turbellaria 5 200 4293 10898 ~~~QiQ~sect tmQtpoundQ~ ~QQsectQ flQi~sect Oligochaeta ~~iQQysecttygl~ iQl~rm~~i2 ~Q[Qi~~l~ ~~DilgDsectisect Ostracoda
5 20
190 103
12 5
400 900
1000 900
60 (I 400
4293 17172
163134 88436 10303 4293
6071 8095
92563 51524 11304 6071
bimnQpoundytng[ sp ~gQmYsectisect IDg[pound~Qisect ~Q[QQhi~m sectlmQDisect sectpoundQtiQlsectQ pound~Qgsectisect ChironQmid larvae
33 1
10 375
2
900 100 700
1000 200
28334 859
8586 321975
171 7
17196 2715 7010
179201 3620
Mean number of organismssample 935 Standard deviation 254
nurn b 0 f 2lean er organlsms m 802791 Standard deviation 218423
H= 239 SD= 075 SR= 1 22 J= 065
A-18
STATION 18 Date 1 June 1984 Depth 30 AI
Salinity (bottom) 00 ppt Temperature (bottom) 134 C No of samples 11
Frequency Density (no 1m2)
Taxa Total number
occurrence (X)
---------------- shyX SD
Turbellaria 14 636 10928 1157 7 ~~~Qltlg~ ilipoundQ~ Oligochaeta
10 178
727 1000
7805 138937
601 6 67913
~~iQQy~tY~l~ ill~[m~Qi~ 122 636 95227 93619 ~Q[Qipound~ l~i~lsectisect Ostracoda
7 1
455 9 1
5464 78 1
6946 2589
billQylhg[ Spa 16 818 12489 10420 GQ[QQQil HQi~ 139 1000 108496 70934 gQ[Qebi secteiifQ[~ sectQiiQi2 ~Q~sectisect Diptera pupae
1 2 1
9 1 182
11 1
781 1561 781
2589 3473 2589
Chironomid larvae 2 182 1561 3473
Mean number of organismssample 714 Standard deviation 284
nean num b er 0 f organlsms m 2 612728 Standard deviation 244249
H= 232 SD= 075 SR= 1 25 J= 063
A-19
STATION 58 Date 1 June 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 138 C No of samples 10
Frequency Density (noI 2 ) Total occurrence
Taxa number (X) X SD
Nematoda 173 1000 148538 47383 Turbellaria 3 300 2576 4147 Oligochaeta 53 1000 45506 32139 ~giQgY2k~g~ ini~[m~Qi~ bQg91YehY2 Yi[~nsect ~Qr~i~Yl m~nl~n~i
26 1
10
600 100 500
22324 859
8586
3391 2 2715
13424 bimnQpound~Q~[ sp ~Q9~m[Y poundgnitYpoundQlysect ~QtQehiYm ~lQni
4 1
46
200 100
1000
3434 859
39496
8295 2715
22243 Chironomid larvae 1 100 859 271 5
Mean number of organismssample 318 standard deviation 103
M b f I 2ean num er 0 organlsms III 273035 Standard deviation 88842
H = 1 99 SD= 065 SR= 1 08 J= 060
A-20
STATION 55 Date 1 June 1984 Depth 27 m Salinity (bottom) 00 ppt Temp era t u r e (b 0 t tom) 140 C No of samples 10
Frequency Density (nom 2 ) Total occurrence
Taxa nueber (X) X SD
Nematoda 157 1000 134800 69524 Turbellaria 9 400 7727 13696 tlHl~lk ~2~~iQH 1 100 859 2715 Oligochaeta 49 1000 42071 32745 ~~iQQysect~gl~ S[l9sect bHbQghQb~~ Yirl~
10 1
400 100
8586 859
12799 2715
tQ[Qpoundls l2lilUsect bilQHSbg[ sp ~QrQQbil nllQisectHarpacticoida
4 7
134 1
400 500
1000 100
3434 6010
115052 859
4434 7069
44742 271 5
sectpoundQUQlls poundsQgn~sect Chironomid larvae
1 1
100 100
859 859
271 5 2715
Hydracarina 1 100 859 2715
Hean number of organismssample 376 Standard deviation 132
M b f 2ean num er 0 organIsms m 322834 Standard deviation 113127
H= 202 SD= 068 SR= 1 40 J= 055
A-21
STATION 45 Date 18 June 1984 Depth 67 m Salinity (bottom) 01 ppt Temperature (bottom) 149 C No of samples 10
Frequency Density (nom2)
Taxa Total nUllber
occurrence ex) i SD
Nematoda 109 1000 93587 3891 7 Turbell ari a 3 200 2576 5795 ~g~tbg limoipoundQl Q~Qni2 fQ(i~2 Oligochaeta ~gigQ~~Y inl[ggi ~Q[QiSY2 moilo Ostracoda
3 2
194 44
7 3
200 200
1000 1000 200 200
2576 171 7
16656B 37778 6010 2576
5795 3620
118364 36020 12831 5795
bimoQampl~n~[2 sp ~Q[QQbiYm lmgoi Harpacticoida sectpoundQQ1202 pound2022Osect Chironomid larvae
68 1 1
113 2
900 100 100
1000 200
58385 859 859
97022 171 7
97627 2715 2715
73976 3620
Mean number of organismssa_pie 550 Standard deviation 371
Mean nUll ber 0 f organIsms 2II 472230 Standard deviation 318519
H= 242 SD= 077 SR= 1 32 Ja 065
A-22
STATION 18 Date 18 June 1984 Depth 34 m Salinity (bottom) 00 ppt Temperature (bottom) 155 C No of samples 10
Frequency Density (nom 2) Total occurrence ----------------shy
Taxa nUlber (Z) X SD
Neutoda 291 1000 249853 138826 Turbellaria 1 100 859 2715 ~~n~~nki~ sectQ~~iQ~2 ~g~ntbg2 limni~Q9 Oligochaeta
1 3
123
100 300
1000
859 2576
105608
271 5 4147
48240 ~~igQY~~~~9 int~(mgii ~Q[~i~~~ mini~ni bimnQ~ylbg(~ Spa
67 6 5
1000 500 400
57526 5152 4293
40485 6003 6071
~Q(QebiYm ~imQnisect Harpacticoida
80 2
1000 200
68688 171 7
41276 3620
sect~QttQini ~2nig~n~i Chironomid larvae
2 4
200 300
171 7 3434
3620 6003
Mean number of organismssample 585 Standard deviation 194
I 2Mean urn b er 0 f organIsms m 502281 Standard deviation 166943
H= 203 SD= 068 SR= 1 20 J= 057
A-23
STATI ON 58 Date 18 June 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (noI 2) Total occurrence
TaKa number (X) X SD
Nellertea 2 100 1717 5430 Nematoda 160 1000 137376 6361 1 Turbellaria 4 400 3434 4434 Oligochaeta 36 1000 3091 0 14705 ~iQQYik~ Q1rQ 4 300 3434 6003 bitnQgl~ebysect YrDsect ~Q[QiY~ ~~nni biQQpoundY1h[ sp ~Q[Qeng ~ilQD Chironomid larvae
3 1 3
61 1
300 100 300
1000 100
2576 859
2576 52375
859
4147 2715 4147
1428 1 2715
Chironollid pupae 1 100 859 271 5
Mean number of organismssample 276 standard deviation 72
nean nurn b er 0 f organIsms I 2 236974 Standard deviation 61410
H = 1 78 SD= 060 SR= 1 23 J= 051
A-24
STATION 55 Date 18 June 1984 Depth 18 m Salinity (bottom)1 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (no 1m2) occurrence
Taxa (X) X SD
Nematoda 160 1000 137376 43967 Turbellaria 1 100 859 271 5 Oligochaeta 61 1000 52375 31985 ~~iQQY~kY~~ int~[mQi~ ~Q[Qipound~l~ m~nini~ biIDnQ~Ylb[s sp
3 3 3
300 300 300
2576 2576 2576
4147 4147 4147
~Q[Q~bi~ ~slIDQni~ Chironomid larvae
85 6
1000 600
72981 5152
34165 4434
Mean number of organismssample 322 Standard deviation 75
2Mean number 0 f organIsms m 276469 Standard deviation 64099
H= 178 5D= 065 SR= 0B4 J= 059
A-25
Frequency Density (no2) occurrence -----------------
Taxa (7) X SD
Nematoda 104 1000 89294 47409 Turbell ar i a 1 100 859 2715 ~~~nQ~sect imni~Q~ tjQQsectQlis flQig~ Oligochaeta
2 1
297
100 100
1000
171 7 859
255004
5430 271 5
146273 ~~i~QYsect~Y~lls ilr2is gQrQi~y~ IDDilDia
24 4
600 300
20606 3434
27212 6003
Ostracoda 2 200 171 7 3620 biDQSy~b~C~ sp M~QYsectisect m~r~~Qi ~QrQeniy QD Harpacticoida
157 1 1 1
900 100 100 100
134800 859 859 859
73197 2715 2715 2715
sectpoundQttQDs SsDQD 113 900 97022 61656
STATION 45 Date 2 July 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) No of samples 10
172 C
Mean number of organismssample 708 Standard deviation 339
M ean num b er f 20 organisms 607889 Standard deviation 290B22
H= 216 SD= 073 SR= 1 27 J= 058
1-26
STATION 18 Date 2 July 1984 Depth 24 WI
Sal inity (bottom) 00 ppt Temperature (bottom) 172 C No of samples 10
--------------------------------~-----------------------------------------Frequency Density (nom2)
Total occurrence Taxa number (7) X SD
Nematoda 202 1000 173437 113532 ~~~nih~sect mnpoundQ~ Oligochleta
4 102
400 1000
3434 87577
4434 54873
~~igQYsect~Y~12 inl~rmgi2 ~Q[~poundYl~ m~ni~nsectisect bimnQpoundylh~[~ Spa
115 4
15
900 300 900
98739 3434
12879
100720 6003 9274
~Q[QQniY~ sect~QDi~ 55 900 47223 40525 Harpacticoida 1 100 859 2715 sectpoundQiiQlD SDg~DEisect Chironomid larvae
2 6
200 400
1717 5152
3620 7240
Hymenoptera 1 100 859 2715 Hydracarina 1 100 859 2715
Mean number of organismssample 508 Standard deviation 253
2Mean num ber 0 f organIsms m 436169 Standard deviation 217580
H= 225 SD= 074 SR= 1 22 J= 063
A-27
STATION 58 Date 2 July 1984 Depth 58 1
Salinity (bottom) 00 ppt Temperature (bottom) IBO C No of samples 10
Frequency Density (no2) Total occurrence
Taxa number ltX) i SD
Nematoda 151 1000 129649 42729 Turbellaria 1 100 859 2715 01 i gochaeta 41 1000 35203 22698 ~~i~e~~~ int~~m~~ 3 200 2576 5795 btbQglYRhY~ Yir~n~ ~e~~ampy mni~niii bimQeamp~tb~ sp ~e~eQhiY ~mQni Chironomid larvae
1 4 2
68 1
100 300 200
1000 100
859 3434 171 7
58385 859
271 5 6003 3620
1557 1 2715
Mean number of organisassample 272 Standard deviation
I 2Mean num ber 0 f organIsms I 233539 Standard deviation 62546
H = 1 69 SD= 061 SR= 099 J= 053
A-28
73
STATION 55 Date 2 July 1984 Depth 15 III
Salinity (bottom) 00 ppt Temperature (bottom) 182 C No of samples 10
Frequency Density (nom2) occurrence
Taxa (X) X SD
Nematoda 184 1()00 157982 5264B Turbellaria 1 100 859 271 5 Oligochaeta ~~iQQ~sect~Y~ll~ n~[~~Qi~ bitnggYQDYsect Yi[~nsect ~QrQipoundM2 m2ni~nsectisect bimnQpoundYn~[2 sp ~QrQQhiM Qni Harpacticoida
91 2 1 B 2
96 2
1000 200 100 500 200
1000 200
78133 171 7 859
6869 171 7
82426 1111
26058 3620 271 5 1890 3620shy
25980 3620
ChirDnomid larvae 5 400 4293 6071 Chironolllid pupae 1 100 859 2715
Mean number of organismssample 393 Standard deviation 53
2t1ean nUllber Df organlsms III 337430 Standard deviatiDn 45080
H= 187 SD= 067 SR= 116 J= 054
A-29
STATION 45 Date 17 Jul y 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (X) X SD
Nematoda 215 1000 184599 45837 ~~n~b~~ imDipoundQ Qe~Qni fllHi2
3 1
300 100
2576 859
4147 2715
Oligochaeta 305 1000 261873 147955 ~~iQQY~k~ in~rm~2i ~Qr~ipoundYl IDniln~i~ Ostracoda
17 1 2
500 100 200
14590 859
171 7
22554 2715 3620
bmnQpound~ihr sp ~QCQQhiY ~lQD~
176 1
1000 100
151114 859
57125 2715
Harpacticoida 4 300 3434 6003 sectQ~~Qn poundnQnai~ Chironomid larvae
91 5
1000 400
78133 4293
61310 6071
Mean number of organismssample 821 Standard deviation 275
M b f 2ean num er 0 organlsms m 70491 1 Standard deviation 236369
H= 215 SD= 073 SR= 114 J= 060
A-30
STATION 18 Date 17 Jul y 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom 203 C No of samples 10
Frequency Density (001 2 Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 339 1000 291065 119140 Turbellaria 3 200 2576 5795 ~~2~b~~ limnipoundQ12Oligochaeta
4 18S
300 1000
3434 161417
6003 89393
~~iQQy~~~ls in~(ID~Qi bim~Qampy~bg(2 Spa
34 16
800 700
29192 1373B
22967 15252
~g(gebi~m ~21mQni2 Harpacticoida
52 3
1000 200
44647 2576
25212 5795
2ampQ11Q1202 ampS02Qg~2i2 Chironomid larvae
18 10
700 700
15455 8586
13904 701 0
Mean number of organi$mssample 667 Standard deviation IBB
H ean nurn b er 1 20 f organIsms m 572686 Standard deviation 161750
H = 1 99 SD= 065 SR= 090 J= 060
A-31
STATION 58 Date 17 July 1984 Depth 55 AI
Salinity (bottom) 00 ppt Temperature (bottom) 197 C No of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nellatoda 173 1000 14853B 66390 Turbellaria 1 100 859 271 5 ~~~n~hu ini~QA Oligochaeta
1 46
100 1000
859 39496
2715 26293
~gipoundQy~~ygl2 in~rJg~i~ b1nQglYRnY~ Yi( Bivalvia
6 2 1
400 200 100
5152 1717 859
8295 3620 271 5
ei~ IDnH~n~i~ 2 200 171 7 3620 Ostracoda 1 100 959 271 5 biIDQHlh~( Spa ~Q(QRbim ~21Qnisect Diptera pupae
1 94
1
100 1000 100
859 80708
859
2715 35332 2715
Heleidae 1arvae 5 500 4293 4525 Chironomid larvae 1 100 859 2715
Mean number of organismssample 335 Standard deviatiDn 113
Mean number of organismsRI2 287631 Standard deviation 97413
H= 1 86 SO= 064 SR= 155 J= 049
A-32
STATION 55 Date 17 July 1984 Depth 18 m Sali nity (bottom) 00 ppt TeAlperature (bottom) 199 C No of samples 10
Frequency Density (nom2 ) occurrence
Taxa (X) x S D
Nematoda 61 1000 52375 33972 Turbellaria 1 100 859 2715 Oligochaeta 24 900 20606 11590 ~~i2QY~k~~1 iOi[2 bimDQ~xlb~r sp ~Q[QQhi~ sectgni~ Chironomid larvae
3 1
38 3
200 100
1000 300
2576 859
32627 2576
5795 2715
19326 4147
Mean number of organismssample 131 standard deviation 54
M b f 2ean num er 0 organIsms 112477 Standard deviation 46757
H= 184 SD= 066 SR= 085 J= 065
bull
A-33
STATION 45 Date 1 August 1984 Depth 58 m Sal i nity (bottoll) 03 ppt Temperature (bottom) 203 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa nUllber (X) X SD
Nematoda 145 1000 124417 52344 Turbellaria 1 100 859 2715 Mmth~sect iHpoundQ~ Q~~Qi ilQ[i9Oligochaeta
5 3
196
500 300
1000
4293 2576
168286
4525 4147
91064 ~igQYsect~~li int9i Ostracoda
2 3
100 300
171 7 2576
5430 4147
bimnQpoundtl sp ~Q[Q2hiY sectlQni~
240 6
1000 600
206064 5152
73526 4434
sectpoundQtQl poundngnai~Helei dae larvae
1862 1
1000 100
1598713 859
966134 271 ~
Mean number of organismssample 2464 Standard deviation 1156
211 ean num ber 0 f organIsms II 2115590 Standard deviation 992518
H= 124 SD= 041 SR= 089 J= 036
A-34
STATION 1S Date 1 August 1984 Depth 24 II
Salinity (bottom) 00 ppt Temperature (bottom) 198 C No of samp I es 10
Frequency Density (nom2) occurrence ---------------- shy
Taxa (X) X S D
Nuertea 1 100 859 2715 Nellatolllorpha 1 100 859 2715 Nematoda 248 1000 212933 108288 Turbellaria 4 400 3434 4434 ~untb~la Hli~g Oligochaeta
4 206
400 1000
3434 176872
4434 75309
~~igQYli~dli i[t~(gi~ ~QtQpound l binQ~ybt2 sp ~2l~bi Q[i ~2tlgtQ(ila tirisect sectpoundQtel poundl9lla Chironomid larvae
10 1
20 205
1 574
9
500 100 800
1000 100
1000 400
8586 859
17172 176013
859 492836
7727
10709 271 5
14021 48104
271 5 150531
13696
Mean number of organismssample 1284 Standard deviation 290
M b f I 2ean nurn er 0 organIsms III 1102442 Standard deviation 2488B5
H= 211 SD= 071 SR= 1 16 J= 057
A-35
STATION 58 Date 1 August 1984 Depth 55 m Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samp 1es 10
Frequency Densi ty _ ltnom2 ) Total occurrence
Taxa number (7) X SD
Nemertea 1 100 859 2715 Nematoda 22 900 18889 15036 Turbellaria 1 100 859 2715 Oligochaeta 19 700 16313 17385 biiQQgl~QhY~ YiCg~~ 2 200 171 7 3620 ~Q[~i~~l~ m2nil~n2i2 ~Q[QehiYm ~lmQni2
4 164
300 1000
3434 140810
6003 103048
Heleidae larvae 8 500 6869 8868
Mean number of organismssample 221 Standard deviation 111
I 2Mean num ber 0 f organIsms m 189751 Standard deviation 95391
H = L 37 SD= 043 SR= 090 J= 046
A-36
STATION 55 Date 1 August 1984 Depth 15 m Salinity (bottoll) 01 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (i ) X SD
Nemertea 1 100 859 2715 Neutoda 122 1000 104749 7394B Turbellaria 4 300 3434 6003 ~~~~~nt~ secte~poundQa~ Oligochaeta
1 118
100 1000
859 101315
2715 61223
~giQgY~k~~l iot~[m~Qi btbQg~2b~ Y[O ~grQipound~ ~nl~ni b~ngpound~tb~[ Spa
3 1 5 1
200 100 500 100
2576 859
4293 859
5795 2715 4525 2715
~Q[QebiYm ~mQoi sect~QttQ~ ~OQOi Heleidae larvae
42 2 2
800 200 100
36061 171 7 171 7
21341 3620 5430
Chironomid larvae 4 400 3434 4434
Mean number of organismssapIe 306 Standard deviation 169
M b f I 2ean nurn er 0 organIsms m 262732 Standard deviation 145101
H = 198 SD= 067 SR= 1 45 J= 054
A-37
~-- --------------~~-------------
STATION 45 Date 17 August 1984 Depth 61 1
Salinity (bottom) 10 ppt Temperature (bottom) 210 C No of samp 1es 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nematoda 240 1000 206064 130213 ~~h~sect limQ tjQ~~Hi~ fQ[i~~ Oligochaeta
31 2
245
400 100
1000
26617 1717
210357
75228 5430
121374 babgglYQbl~ Yi[~sect 1 100 859 2715 Ostracoda 1 100 859 271 5 biQ~xtb~[ Spa ~~Q~~isect ~[pound~Qisect ~Qgebi HQOi
333 2
143
1000 200
1000
28591 4 171 7
1227BO
106553 3620
106860 sectpoundQUg~ poundg~nsectisect 1738 1000 1492247 68441 7
Mean number of organismssample 2736 Standard deviation 944
M b f I 2ean num er 0 organlslls m 2349130 Standard deviation 810600
H= 172 SD= 056 SR= 079 J= 052
A-38
STATION 18 Date 17 August 1984 Depth 27 III
Sal i ni ty (botto) 01 ppt Temperature (bottom) 214 C No of samples 10
Frequency Density (nom 2 ) occurrence
Taxa (X) X SD
Nematoda 186 1000 159700 62468 ~tgt SPa 2 100 171 7 5430 Turbellaria 8 400 6869 8868 ~~ntbg2 imnipoundQ 12 700 10303 11304 Oligochaeta 283 1000 242984 90509 ~~iQQY~~Y~lls inlgtmggisBivalvia
4 1
400 100
3434 859
4434 271 5
~Qt~i~Y nilnsectisectbimnQpoundttbg[s SPa ~QtQQbi~ islmQDi2
1 17
286
100 900
1000
859 14596
245560
271 5 10747 83461
sectpoundetteln poundDsggnsectisect Chironomid larvae
526 4
1000 3Q0
451624 3434
179610 6003
Mean number of organismssapIe 1330 Standard deviation 162
Mean nurn ber I 20 f organIsms m 1141938 Standard deviation 139389
H= 214 SD= 073 SR= 1 06 J= 060
A-39
STATION 58 Date 17 August 1984 Depth 55 II
Salinity (bottom) 01 ppt Temperature (bottom) 220 C ND of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (7) x S D
Nematoda 68 1000 58385 27689 Turbellar i a 4 200 3434 8295 Oligochaeta 19 800 16313 13084 ~~i~Q~k~~l~ in~~[m~i bitUQ9Y2bYa Yi[~na Bivalvia
3 3 4
300 300 300
2576 2576 3434
4147 4147 6003
gQ[QipoundYl~ mnilDa 1 100 859 2715 binQpoundY~[ sp gQ[Q2UY a~mgnia sect~Qtgl~n ~n~~ni
2 338
6
100 1000 400
171 7 290207
5152
5430 56636 7240
Mean number of organismssample 448 Standard deviation 72
W b f 2lean num er 0 organlsms II 384653 Standard deviation 61988
H = 1 27 SD= 041 SR= 1 02 J= 038
A-40
STATION 55 Date 17 August 1984 Depth 18 m Salinity (bottom) 00 ppt Temperature (bottol) 223 C No of samples 10
Frequency Density (nom 2 ) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 291 1000 249853 118104 Turbellaria 1 100 859 2715 M~ntb~ mni~Q Oligochaeta
1 47
100 1000
859 40354
2715 28347
~~iQQ~sectkY~ll int~[m~gi bitbQQ1YSDY Yi(gn Bivalvia
25 12
6
900 500 400
21465 10303 5152
1231 0 18459 7240
~Q~2ipoundY mnil~ni Ostracoda
11 8
400 600
9445 6869
12442 6773
bmnQpoundYb~r~ SPa 52 1000 44647 19746 ~QrQsbY lmgnisectsQiielo snQ~ni~ Chironomid larvae
43 5
15
1000 400 BOO
36920 4293
12879
21436 6071 8344
Mean number of organismssample 517 Standard deviation 174
M b f I 2ean num er 0 organlsms m 443896 Standard deviation 149431
W = 228 SD= 065 SR= 1 33 J= 062
A-41
STATION 45 Date 29 August 1984 Depth 55 III
Salinity (bottom) 07 ppt Temperature (bottom) 199 C No of samples 10
Frequency Density (noI 2) Total occurrence
Taxa number (X) X SD
Nematoda 192 1000 164851 98380 ~sntbsect limnipoundQlDligochaeta
2 198
200 1000
171 7 170003
3620 67339
~Q[eipoundYls msniln~isect Ostracoda
1 4
100 400
859 3434
2715 4434
bimnQpoundytb[s Spa gQ[Qeniy sect21QOi~ sectpoundQttQlsO poundsOsggOi
164 87
2468
1000 1000 1000
140810 74698
2119025
39283 39460
840890
Mean number of organismssample 311 6 Standard deviation 101 1
ill b f 2nean nUll er 0 organIsms 2675398 Standard deviation 8682B8
W= 116 SD= 036 SR= 060 J= 039
A-42
STATION 18 Date 29 August 1984 Depth 30 bull Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samples 10
Total Frequency occurrence
Densi ty 2
(nom )
Taxa number (~ ) x S D
Nematoda 150 1000 128790 28905 Turbellaria 7 400 6010 9096 ~nh imni~Qj Oligochaeta ~~i~2Y~k~~1 ini~CIDgii bih2g~Qb~ Yi(~U2 Bivalvi a
B 145
1 1 2
600 1000
100 100 200
6869 124497
859 859
171 7
677 3 84732
271S 2715 3620
~Q[Qi~yli miDllgni bimn2pound~ih~C sp ~QtQehiY imQUia Harpacticoida
7 7
265 1
500 300
1000 100
6010 601 0
227529 859
8145 10747
139462 2715
sect~QtiQDi ~Q~Q~i~ Chironomid larvae
2471 2
1000 200
2121601 171 7
1063112 3620
Mean number of organismssample 3067 Standard deviation 121 9
2Mean number 0 f organIsms m 2633326 standard deviation 1046718
H = 1 09 SD= 034 SR= 1 04 J= 029
A-43
STATION 58 Date 29 August 1984 Depth 55 111
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (noI 2 ) Total occurrence -----------------
Taxa nUllber (X) X SD
Nemertea 4 400 3434 4434 Nuatoda 64 1000 54950 25016 Turbellaria 9 400 7727 11047 ~Hl~b limli~Q19 Oligochaeta
1 37
100 1000
859 31769
2715 19006
i~Qyh il(~~ bHtlQSlheln Yl Bivalvia
4 4
20
200 300 400
3434 3434
17172
8215 6003
26541 ~e(ijY l bQ~dlH sp
26 1
700 100
22324 859
25662 2715
~Q[QQhil iQ sectjgUell HD Heleidae larvae
418 20
1
1000 800 100
358895 17172
859
129443 12799 271 5
Mean number of organismssample 609 Standard deviation 175
nean num b er 0 f organIsms 1 111 2 522887 Standard deviation 150164
H= 176 SD= 051 SR= 1 30 J= 047
A-44
I I
I
I
STATION SS
Date 29 August 1984 Depth 21 1
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (no2) Total occurrence
Taxa nUllber (X) x S D
Nematoda ISO 1000 128790 37969 Turbellaria 1 100 859 271 5 Oligochaeta 48 1000 41213 16088 ~i~g~sect~~l iQ~~mgi bi~QQg~gb~sect ~i~nsect
10 14
600 600
eSB6 12020
9050 14137
Bivalvia 4 200 3434 7240 ~Q[Q~Yl niQaa Ostracoda
15 7
700 SOO
12879 6010
15806 7069
bmQg~~~b~ SPa 14 800 12020 8295 ~g[gaby mgni sect~g~~Qn ~ngnai Chironomid larvae
IB4 25 9
1000 900 700
157982 21465
7727
35563 16810 6335shy
Mean number of organismssample 481 Standard deviation B6
2Mean number 0 f organlsms m 412987 Standard deviation 74131
H= 24S SD= 074 SR= 1 23 J= 068
A-45
STATION 45 Date 14 September 1984 Depth 61 11
Salinity (bottom) 03 ppt Temperature (bottom) IB4 C No of samples 10
---------------------------------~----------------------------------------
Taxa TotalnUlllDer
Frequency occ~~~ence
Density (no 2) -----X-------sect7B
Nematoda 189 1000 162275 85233 t1tQ SPa
Turbellaria 2 2
200 100
171 7 171 7
3620 5430
~~~nIng limoifQl t1QQQDi~ flQriQ Oligochaeta
5 19
142
400 800
1000
4293 1631 3
121921
6071 12442 30504
~QQifYl mDl~D bimoQpoundt1hgr Spa Cumacea
19 184
2
800 1000 200
1631 3 157982
171 7
130B4 69541 3620
~Q[QnniYm ~~lmQDi Harpacticoida
118 1
1000 100
10131 5 B59
43367 2715
sectfQIIQD fOQgO Chironomid larvae
1780 1
1000 100
1528308 859
673586 2715
Mean number of organismssample 2464 Standard deviation 874
M ean num b er f 20 organlsms 2115590 Standard deviation 750305
H= 151 SD= 046 SR= 1 07 J= 041
A-46
STATION 18 Date 14 September 1984 Depth 21 III
Salinity (bottom) 01 ppt Temperature (botto) 182 C No of samples 10
Frequency DenSity (nom 2 ) Total occurrence ---------------- shy
Taxa nUlDber (i) X SD
Nemertea 1 100 859 271 5 Nematoda 186 1000 159700 44925 Turbellaria 16 400 13738 20717 ~~Dth~~ limni~Ql Oligochaeta
13 55
700 900
11162 47223
9096 30085
~Q~ei~Yl nil~Qi~ 17 900 14596 7069 bimDg~lbg[ Spa b 500 5152 6003 ~Q[Q2niY ~lgQi~ Harpacti coi da
562 2
1000 200
482533 171 7
136766 3620
sectpoundQttQ~Q~ ~n~ni 791 1000 679153 324290
Mean number of organismssample 1649 Standard deviation 447
I 211ean nUll ber 0 f organIsms I 1415831 Standard deviation 384136
H= 179 SD= 064 SR= 084 J= 054
A-47
STATION 58 Date 14 September 1984 Depth 58 III
Salinity (bottom) 01 ppt Temperature (bottom) 191 C No of sampl es 10
-------------------------------------------~------------------------------Frequency Density (nom 2 )
Total occurrence Taxa number eX) X SD
Nemertea 1 100 859 2715 Nematoda 55 1000 47223 18658 Turbellaria 10 500 8586 11448
1 100 859 2715 Oligochaeta 41 1000 35203 17850 ~~iQQ~~gll iu1g[m~i ~Q[Q~Yl nilD bimnQ~Y~h[ Spa ~Q[Q~hiYm lmgui sectpoundQilg1D poundU2D Chironomid larvae
4 10
2 277
23 4
100 500 200
1000 700 300
3434 8586 171 7
237832 19748 3434
10861 11448 3620
50561 21051 6003
Mean number of organismssample 428 Standard deviation 51
M b f 2ean num er 0 organIsms III 367481 Standard deviation 43743
H= 179 SD= 055 SR= 114 J= 052
A-48
I I
STATION SS Date 14 September 1984 Depth 21 II
Salinity (bottom) 01 ppt Temperature (bottom) 190 C No of samples 10
--------------------------------------------------------------------~-----
Frequency Density (no1I2) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 102 1000 87577 39200 Oligochaeta 34 700 29192 31142 ~iQ2Y~y1 int(mgi~ bithQgl~en~ Yi(gDsect ~Q(~i~Y m~DilgDsecti~ bimDQamp~1h(sect sp ~2(QQhiY slmQD 2poundQiiQlsD ~sD~g~nsecti Chironomid larvae
36 18 16 17
100 16
3
1000 600 800 700
1000 800 300
30910 15455 13738 14596 85860 13738 2576
157BO 20953 10078 14621 32126 10861 4147
Mean number of organismssample 342 Standard deviation 97
2Mean nUllber 0 f organlsms m 293641 Standard deviation 83617
H= 262 SD= 079 SR= 095 J= 083
A-49
Appendix B--Sediment particle size and organic content of the Cathlamet Bay
benthic invertebrate sites 13 March through 14 September
1984
iii
1
Station 18a 48 54 57
Survey 1 1 1 1
Month March March March March
Day 13 13 13 13
Particle size (mm) Phib Percent by weight
gt 40 -2 000 000 000
20- 40 -1 000 000 000
10- 20 0 000 009 000
05- 10 1 018 1079 032
025- 050 2 545 7583 2468
0125- 025 3 8731 1225 6783
00625-0125 4 491 037 657
lt0625 (5-12) 216 067 060
Organic Content 160 116 128
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
b Phi= -log2(sediment particle diameter in mm)
B-1
Station 18a 48 54 57
Survey 2 2 2 2
Month April April April April
Day 5 5 5 5
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 003 093 000
05shy 10 1 005 31 75 023
025shy 050 2 087 5904 2368
0125- 025 3 6316 750 7155
00625-0125 4 3056 026 427
lt0625 (5-12) 533 052 028
Organic Content 081 077 065
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-2
Station 45 55 58
Survey 3 3 3 3
Month April April April April
Day 18 18 18 18
Particle size (mm)
gt 40
Phi
-2
Percent by weight
000 000 000
20shy 40 -1 000 000 000
10shy 20 0 005 009 004
05shy 10 1 010 027 013
025shy 050 2 015 095 225
0125- 025 3 097 536 6111
00625-0125 4 453 2821 2205
lt0625 (5-12) 9420 6511 1442
Organic Content 31 42 14
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-3
Station 18a 45 55 58
Survey 4 4 4 4
Month May May May May
Day 4 4 4 4
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 021
05shy 10 1 000 065 063
025shy 050 2 012 370 230
0125- 025 3 091 4099 4696
00625-0125 4 322 3650 3052
lt0625 (5-12) 9575 1810 1939
Organic Content 330 180 160
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-4
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
5
May
17
000
000
005
016
217
5862
2729
1170
100
45 55 58
5 5 5
May May May
17 17 17
Percent by weight
000 000
000 000
005 008
113 031
325 274
1903 5613
2784 2401
4870 1672
240 110
000
000
000
010
020
079
397
9494
390
B-5
Station 18al 45 55 58
Survey 6 6 6 6
Month June June June June
Day 6 6 6 6
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 020
05shy 10 1 005 051 027
025shy 050 2 005 301 1 79
0125- 025 3 074 3189 5404
00625-0125 4 599 4118 2885
lt0625 (5-12) 9317 2332 1485
Organic Content 340 240 150
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-6
Station
Survey
Month
Day
Particle size Cmm) Phi
gt 40 -2
20shy 40 -1
10shy 20 a
05shy 10 1
025shy 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
7
June
18
000
000
005
029
138
3917
4143
1768
180
45
7
June
18
55 58
7 7
June June
18 18
Percent by weight
000
000
000
010
020
080
427
9464
310
000 000
000 000
000 007
011 022
057 190
957 5286
3023 2642
5957 1853
1 70 110
B-7
Station 18al 45 55 58
Survey 8 8 8 8
Month July July July July
Day 2 2 2 2
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 006 002 006
05shy 10 1 006 0l3 023
025shy 050 2 017 088 171
0125- 025 3 074 2712 5365
00625-0125 4 552 3892 3081
lt0625 (5-12) 9345 3294 l354
Organic Content 410 210 160
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-8
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
9
July
17
000
000
003
013
130
4294
4434
1127
130
45
9
July
17
Percent
000
000
000
006
012
051
046
9885
290
55
9
July
17
by weight
000
000
019
048
091
628
3616
5597
030
58
9
July
17
000
000
004
022
158
5017
3148
1650
140
B-9
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18al
10
August
1
45
10
August
1
55
10
August
1
58
10
August
1
Percent by weight
000 000
000 004
001 004
009 018
018 088
098 306
049 2510
9824 7070
000
005
045
763
3604
4495
932
156
100 190 060
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-10
Station 18 45 55 58
Survey 11 11 11 11
Month August August August August
Day 17 17 17 17
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000 000
20- 40 -1 005 000 000 000
10- 20 0 021 003 000 210
05- 10 1 064 009 000 159
025- 050 2 226 027 045 2656
0125- 025 3 3259 131 712 3719
00625-0125 4 4327 195 1737 1159
lt0625 (5-12) 2098 9635 7506 2097
Organic Content 210 300 160 100
Ii I
B-11
Station
Survey
Month
Day
Particle size (mm) Phi
gt40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
12
August
29
000
000
012
046
186
3465
4498
17 93
241
45
12
August
29
55 58
12 12
August August
29 29
Percent by weight
000
000
002
009
026
118
189
9656
540
000 000
000 000
003 011
011 028
055 1013
859 5033
1596 1827
7476 2089
1 70 120
B-12
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
_-------------------- shy
B-13
STATION 45 Date 18 April 1984 Depth 64 III
Salinity (bottom) 00 ppt Temperature (bottom) 95 C No of samples 15
Total Frequency occurrence
Density (noI 2 )
Taxa number (X) X SD
Nematoda 171 1000 97890 92277 tyg~ sp Turbellaria
1 29
67 600
572 16600
221 7 23506
H~nng~ imDi~g tQQsectQl fg~ig Oligochaeta ~Q[Qi~Y2 m2niD~i Ostracodamiddot
9 41
367 42
100
400 1000 1000 800
1000
5152 23469
210071 24041 57240
781 5 13563
100542 19254 43134
~Q[Qeniym amQnisectHarpacticoida Heleidae larvae
37 2049
1
933 1000
67
21179 117284B
572
189B5 616612
221 7 Chironomid larvae 3 200 171 7 3555 Collembola 1 67 572 221 7 Insect parts 1 67 572 221 7
Mean number of organismssample 1901 Standard deviation 864
b f 2nean num er 0 organIsms m 1632485 Standard deviation 741931
H = 1 52 SD= 046 SR= 1 13 J= 040
A-6
STATION 18 Date 18 April 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom) No of samples 15
Frequency Density (nom2) Total occurrence
Taxa nueber (X) x s D
Nemertea 13 533 7441 9663 Nematomorpha 3 200 171 7 3555 Nematoda 195 1000 111618 63675 Turbell ari a 9 467 5152 6326 ~~ni~~ i~ni~Ql~ 30 867 17172 129B1 Oligochaeta 580 1000 331992 108880 ~QC~i~Ml~ m~nil~n~isectOstracoda
28 18
1000 667
16027 10303
11179 10364
~Q[Q~~iYm sect~Qni2 sect~ci~ gniQQnHarpacticoida
105 1
17
1000 67
400
60102 572
9731
25553 2217
19970 Chironollid larvae 16 667 9158 8B6B
Hean number of organismssample 677 Standard deviation 199
M ean num b I 2er 0 f organIsms AI 580986 Standard deviation 171095
w = 202 SD= 062 SR= 1 10 J= 056
95 C
A-7
STATION 58 Date 18 April 1984 Depth 67 m Salinity (bottom) 00 ppt Temperature (botto) No of samples 15
Frequency Density (nom2) Total occurrence
Taxa number (~) X SD
Nemertea 62 933 35489 26338 Nematoda 224 1000 128218 49903 Turbellaria 9 600 5152 4354 ~nt~sect imni~Q Oligochaeta
1 79
67 1000
572 45220
2217 23506
bnQgYRhY~ Yi~~nE ~Q(~i~Y nil~ni Ostracoda
2 10 19
67 533 600
1145 5724
10876
4434 6214
10989 ~Q[QeniY sectQOiHarpacticoida
30 2
B67 133
17172 1145
12142 3021
Heleidae larvae 6 333 3434 5430 Chironomid larvae 9 400 5152 7B1 5 Chironomid pupae 2 133 1145 3021
Mean number of organismssample 303 Standard deviation 94
I 11 ean num ber 0 f organlsms 2 260442 Standard deviation 81043
H= 233 SO= 070 SR= 1 36 J= 063
97 C
A-B
Frequency Density (nolm 2) Total occurrence -----------------
Taxa number (7) X SD
Nemertea 16 467 9158 10989 Nematoda 266 1000 152258 54541 Turbellaria 23 600 13165 15518 ~l~nH ~Q~iQH 2 133 1145 3021 Oligochaeta 181 1000 103604 56532 bi~hQg~Qn~~ ~it~l~ ~QtQifg mli~lsectisectOstracoda
3 59 15
200 1000 733
1717 33772 8586
3555 23054
7256 ~Q[QQhiY HmQtlsect ~Q[QehiYm sect21tlfQ[lg EQlQQQt~i hQ~i
466 3 1
1000 200 67
266738 171 7 572
75094 3555 221 7
Harpacticoida 30 400 17172 40402 Chironomid larvae 10 533 5724 6214
Mean number of organismssa_pIe 717 Standard deviation 143
I 2Mean number 0 f organlsms m 615330 Standard deviation 122532
H= 226 SO= 072 SR= 119 J= 061
STATION 55 Date 18 April 1984 Depth 30 1ft
Salinity (bottom) 00 ppt Temperature (bottom) 93 C No of SaIIples 15
A-9
STATION 45 Date 4 Hay 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 103 C No of samples 10
Frequency Density (noI2) Total occurrence ---------------- shy
Taxa number (Xl X SD
Neutoda 269 1000 230963 167296 Turbellaria 1 100 859 2715 ~u~yuti Q~iQ ~Ub imni~Q
1 2
100 100
859 171 7
2715 5430
j2~Qn flec Oligochaeta
28 169
BOO 1000
24041 145103
19326 74351
~igeYk~ll iulCIDai ~Q(Qi~Y uini Ostracoda
32 4 5
aoo 400
400
27475 3434 4293
22463 4434 6071
biQQ~~tbt sp ~e(QQbYm mQoi sectampQeD ~nQDisect Chironomid larvae
25 2
578 2
900 200
1000 200
21465 1717
496271 171 7
15279 3620
293820 3620
Mean number of organismssample 111 8 Standard deviation 522
11 b f I 2ean num er 0 organIsms m 95991 5 Standard deviation 447842
H= 193 SD= 065 SR= 118 J= 052
A-10
STATION 18 Date 4 Hay 1984 Depth 34 II
Salinity (bottom) 00 ppt Temperature (bottom) 104 C No of saMples 10
Frequency Density (noI 2 ) occurrence ----------------shy
Taxa (X) X SD
Nemertea 10 600 8SB6 10709 Nuatoda 153 1000 131366 47899 Turbellaria 8 600 6869 6773 ~n1b limnpoundQl Oligochaeta
11 147
700 1000
middot9445 126214
9449 6231 7
~i~g~kXl in1(m~i ~g(2iY OiOi Ostracoda
86 4 1
900 300 100
73840 3434 859
61543 6003 2715
bimoQpoundx1b( sp ~2(QQbiYm mgoiDi ptera adult
3 57
3
300 900 300
2576 48940
2576
4147 21815 4147
Chironomid larvae 4 300 3434 6003 Chironomid pupae 1 100 859 2715
Hean nUMber of orQanismssample 489 Standard deviation 160
b f 2nean nUll er 0 organIsms II 418997 Standard deviation 137721
H= 243 SD= 076 SR= 1 34 J= 066
A-l1
STATION 5B Date 4 Hay 1984 Depth 61 bull Salinity (botto~) 00 ppt Temperature (bottom) 110 C No of suples 10
Frequency Density (nom 2) Total occurrence ---------------- shy
Taxa number (X) X SD
Neertn 41 1000 35203 21206 Nematoda 211 1000 181165 53305 Turbellaria 4 200 3434 7240 Oligochaeta 89 1000 76415 32240 ~i~2~~~11~ iU1(~i~bi1begygny YitQ ~e(biYl ~OiDi OstracDda
4 3
20 1
400 200 BOO 100
3434 2576
17172 859
4434 5795
19829 2715
biue~1bt~ sp ~2(egniY Imeoi sectg11g1O OdD Helei dae larvae
5 32
1 1
400 900 100 100
4293 27475
859 859
6071 18010 2715 2715
Chironomid larvae 7 400 6010 9096
Mean number of organismssample 419 Standard deviation 93
b f 2ean nUll er 0 organIsms m 359753 Standard deviation 79875
H= 221 SD= 068 SR= 138 J= 060
A-12
Frequency Density (nolm 2) occurrence -----------------
Taxa (X) X SD
Nemertea 23 900 1974S 15171 Neutollorpha 1 100 859 271 5 Nellatoda 269 1000 230963 69923 Turbellaria 10 600 8586 991 4 ~~xYnki Q~ampiQ 4 300 3434 6003 ~nb limnipoundQl Oligochaeta
1 79
100 1000
859 67829
2715 40363
~i~Q~kXl io[~i biDe9XQDX ~i[~OBi valvi a
11 3 1
800 300 100
9445 2576 859
6335 4147 271 5
~Q[~poundY mnil~n bimoQampXD[ sp ~Q[QabiY lQO Harpacticoida
18 2
159 1
700 200
1000 100
15455 171 7
135659 859
13904 3620
54272 2715
Chironomid larvae 2 200 171 7 3620 Trichoptera larvae 1 100 859 2715
STATION 55 Date 4 May 1984 Depth 21 m Salinity (bottom) 00 ppt Temperature (bottom) 107 C No of suples 10
Mean number of organismssamples 594 Standard deviation 147
Mean number of organismsm2 501422 Standard deviation 126525
H= 219 aD= 069 SR= 1 63 J= 055
A-13
STATION 45 Date 17 May 1984 Depth 61 m Sal i ni ty (bottom) 01 ppt Temperature (bottom) 121 C No of sampl es 10
Frequency Total occurrence
Taxa nUlllber (7)
NelDertea 1 100 859 2715 Nematoda 163 1000 139952 127996 Polychaeta 1 100 859 2715 ~~~n~h~ imni~Qs Hobsonia florida
2 6
200 600
171 7 5152
3620 4434
Oligochaeta 329 1000 282479 13291 8 ~~lQQYsectk~~12 in~~rmQi 57 900 48940 33142 ~Qr~ipound~2 ffi2niDi 6 500 5152 6003 Ostracoda 5 200 4293 10898 bimDg~yth( SPa 13 600 11162 12176 ~Q(Qebi~m sectQDisect Harpacticaida
2 2
200 100
1717 1717
3620 5430
2poundQttQD poundDQDsectisectDiptera adult
296 1
1000 100
254146 859
172633 271 5
Mean number of organismssample 884 Standard deviation 326
b f I 2nean num er 0 organlss m 759002 Standard deviation 280131
H= 209 SD= 071 SR= 1 33 J= 055
A-14
STATION 18 Date 17 May 1984 Depth 30 m Salinity (bottom) 00 ppt Temperature (bottom) 122 C No of samples 12
Frequency Density (nom2) Total occurrence -----------------
Taxa number (X) X SD
Nematoda 50 833 35775 22815 ~ntb limnipoundQl 3 Oligochaeta 97
250 833
2147 69404
3883 48495
~igQ~~k~ intr~ 27 ~QrQipoundY mnin~i~ 5
667 333
19319 3S7S
19068 5740
Ostracoda 1 83 716 2479 bimnQpound~nr sp 5 ~Q(Q~bY ~mQni S4 ~Q(Q~niY ~QinipoundQ(n 3
333 833 250
3578 60102
2147
5740 43780 3883
fgnQ2Q(i bQ~i 1 sectpoundQtgO poundnQn~i 2 Chironomid larvae 4
83 167 250
716 1431 2862
2479 3342 5592
Mean number of organismssample 235 Standard deviation 116
nean nURl b er 0 f organlslls II 2 201771 Standard devi ati on 99221
H= 236 SD= 075 SR= 1 35 J= 066
A-15
STATION 58 Date 17 May 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) 123 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nemertea 2 100 171 7 5430 Nematoda 75 1000 64395 34404 ~~2Qih~a limQi~Q 2 200 171 7 3620 Oligochaeta 60 1000 51516 33376 ~~igQY~~~12 iQ~[~~gi 2 200 171 7 3620 bitQQ9~Bh~sect Yr~Qsect 3 200 2576 579~
gQ[Qi~Yl ID2Dil~nsectisect Ostracoda
6 6
500 400
5152 5152
6003 8295
binQ~~nr[ sp gg[QQOYm mQQsect sect~QttQn 5n2Q~nsectia Chironomid larvae
2 34
1 1
200 1000
100 100
171 7 29192
859 859
3620 12927 271 5 2715
Mean number of organismssample 194 Standard deviation
2Mean nurn ber 0 f organIsms fA 166568 Standard deviation 56259
H= 225 SD= 072 SR= 1 45 J= 063
A-16
66
STATION 55 Date 17 May 1984 Depth 24 II
Salinity (bottom) 00 ppt Telllperature (bottom) 126 C No of samples 10
Total Frequency occurrence
Taxa nUllber (X) X SD --------------------------------------------------------------~-----------
Nematollorpha 2 200 171 7 3620 Nematoda 63 1000 54092 35297 Oligochaeta 94 1000 80708 44004 ~~iQQY~k~~l iQt~(m~Qi bitnQg~Qh~~ Yi[~Q gQ[QipoundY~ mni~Q~i Ostracoda
10 9 4 2
600 800 300 100
8586 7727 3434 171 7
9050 4874 6003 5430
bimnQ~~ln~[e sp ~Q(QQbiYm mQD ~Q[QQbiYm 2inipoundQ[n~ Chironomid larvae
6 142
3 1
600 1000 200 100
5152 121921
2576 859
4434 50682 5795 2715
Mean number of organismssample 336 Standard deviation 62
2Mean num ber 0 f organisms m 288490 Standard deviation 53421
H= 214 SD= 071 SR= 119 J= 062
A-17
STATION 45 Date 1 June 1984 Depth 61 m Salinity (bottom) 01 ppt Temperature (bottom) 139 C No of samples 10
Total Frequency occurrence
Density (no2)
Taxa nUllber (1) X SD
Nematoda 174 900 149396 132347 Turbellaria 5 200 4293 10898 ~~~QiQ~sect tmQtpoundQ~ ~QQsectQ flQi~sect Oligochaeta ~~iQQysecttygl~ iQl~rm~~i2 ~Q[Qi~~l~ ~~DilgDsectisect Ostracoda
5 20
190 103
12 5
400 900
1000 900
60 (I 400
4293 17172
163134 88436 10303 4293
6071 8095
92563 51524 11304 6071
bimnQpoundytng[ sp ~gQmYsectisect IDg[pound~Qisect ~Q[QQhi~m sectlmQDisect sectpoundQtiQlsectQ pound~Qgsectisect ChironQmid larvae
33 1
10 375
2
900 100 700
1000 200
28334 859
8586 321975
171 7
17196 2715 7010
179201 3620
Mean number of organismssample 935 Standard deviation 254
nurn b 0 f 2lean er organlsms m 802791 Standard deviation 218423
H= 239 SD= 075 SR= 1 22 J= 065
A-18
STATION 18 Date 1 June 1984 Depth 30 AI
Salinity (bottom) 00 ppt Temperature (bottom) 134 C No of samples 11
Frequency Density (no 1m2)
Taxa Total number
occurrence (X)
---------------- shyX SD
Turbellaria 14 636 10928 1157 7 ~~~Qltlg~ ilipoundQ~ Oligochaeta
10 178
727 1000
7805 138937
601 6 67913
~~iQQy~tY~l~ ill~[m~Qi~ 122 636 95227 93619 ~Q[Qipound~ l~i~lsectisect Ostracoda
7 1
455 9 1
5464 78 1
6946 2589
billQylhg[ Spa 16 818 12489 10420 GQ[QQQil HQi~ 139 1000 108496 70934 gQ[Qebi secteiifQ[~ sectQiiQi2 ~Q~sectisect Diptera pupae
1 2 1
9 1 182
11 1
781 1561 781
2589 3473 2589
Chironomid larvae 2 182 1561 3473
Mean number of organismssample 714 Standard deviation 284
nean num b er 0 f organlsms m 2 612728 Standard deviation 244249
H= 232 SD= 075 SR= 1 25 J= 063
A-19
STATION 58 Date 1 June 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 138 C No of samples 10
Frequency Density (noI 2 ) Total occurrence
Taxa number (X) X SD
Nematoda 173 1000 148538 47383 Turbellaria 3 300 2576 4147 Oligochaeta 53 1000 45506 32139 ~giQgY2k~g~ ini~[m~Qi~ bQg91YehY2 Yi[~nsect ~Qr~i~Yl m~nl~n~i
26 1
10
600 100 500
22324 859
8586
3391 2 2715
13424 bimnQpound~Q~[ sp ~Q9~m[Y poundgnitYpoundQlysect ~QtQehiYm ~lQni
4 1
46
200 100
1000
3434 859
39496
8295 2715
22243 Chironomid larvae 1 100 859 271 5
Mean number of organismssample 318 standard deviation 103
M b f I 2ean num er 0 organlsms III 273035 Standard deviation 88842
H = 1 99 SD= 065 SR= 1 08 J= 060
A-20
STATION 55 Date 1 June 1984 Depth 27 m Salinity (bottom) 00 ppt Temp era t u r e (b 0 t tom) 140 C No of samples 10
Frequency Density (nom 2 ) Total occurrence
Taxa nueber (X) X SD
Nematoda 157 1000 134800 69524 Turbellaria 9 400 7727 13696 tlHl~lk ~2~~iQH 1 100 859 2715 Oligochaeta 49 1000 42071 32745 ~~iQQysect~gl~ S[l9sect bHbQghQb~~ Yirl~
10 1
400 100
8586 859
12799 2715
tQ[Qpoundls l2lilUsect bilQHSbg[ sp ~QrQQbil nllQisectHarpacticoida
4 7
134 1
400 500
1000 100
3434 6010
115052 859
4434 7069
44742 271 5
sectpoundQUQlls poundsQgn~sect Chironomid larvae
1 1
100 100
859 859
271 5 2715
Hydracarina 1 100 859 2715
Hean number of organismssample 376 Standard deviation 132
M b f 2ean num er 0 organIsms m 322834 Standard deviation 113127
H= 202 SD= 068 SR= 1 40 J= 055
A-21
STATION 45 Date 18 June 1984 Depth 67 m Salinity (bottom) 01 ppt Temperature (bottom) 149 C No of samples 10
Frequency Density (nom2)
Taxa Total nUllber
occurrence ex) i SD
Nematoda 109 1000 93587 3891 7 Turbell ari a 3 200 2576 5795 ~g~tbg limoipoundQl Q~Qni2 fQ(i~2 Oligochaeta ~gigQ~~Y inl[ggi ~Q[QiSY2 moilo Ostracoda
3 2
194 44
7 3
200 200
1000 1000 200 200
2576 171 7
16656B 37778 6010 2576
5795 3620
118364 36020 12831 5795
bimoQampl~n~[2 sp ~Q[QQbiYm lmgoi Harpacticoida sectpoundQQ1202 pound2022Osect Chironomid larvae
68 1 1
113 2
900 100 100
1000 200
58385 859 859
97022 171 7
97627 2715 2715
73976 3620
Mean number of organismssa_pie 550 Standard deviation 371
Mean nUll ber 0 f organIsms 2II 472230 Standard deviation 318519
H= 242 SD= 077 SR= 1 32 Ja 065
A-22
STATION 18 Date 18 June 1984 Depth 34 m Salinity (bottom) 00 ppt Temperature (bottom) 155 C No of samples 10
Frequency Density (nom 2) Total occurrence ----------------shy
Taxa nUlber (Z) X SD
Neutoda 291 1000 249853 138826 Turbellaria 1 100 859 2715 ~~n~~nki~ sectQ~~iQ~2 ~g~ntbg2 limni~Q9 Oligochaeta
1 3
123
100 300
1000
859 2576
105608
271 5 4147
48240 ~~igQY~~~~9 int~(mgii ~Q[~i~~~ mini~ni bimnQ~ylbg(~ Spa
67 6 5
1000 500 400
57526 5152 4293
40485 6003 6071
~Q(QebiYm ~imQnisect Harpacticoida
80 2
1000 200
68688 171 7
41276 3620
sect~QttQini ~2nig~n~i Chironomid larvae
2 4
200 300
171 7 3434
3620 6003
Mean number of organismssample 585 Standard deviation 194
I 2Mean urn b er 0 f organIsms m 502281 Standard deviation 166943
H= 203 SD= 068 SR= 1 20 J= 057
A-23
STATI ON 58 Date 18 June 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (noI 2) Total occurrence
TaKa number (X) X SD
Nellertea 2 100 1717 5430 Nematoda 160 1000 137376 6361 1 Turbellaria 4 400 3434 4434 Oligochaeta 36 1000 3091 0 14705 ~iQQYik~ Q1rQ 4 300 3434 6003 bitnQgl~ebysect YrDsect ~Q[QiY~ ~~nni biQQpoundY1h[ sp ~Q[Qeng ~ilQD Chironomid larvae
3 1 3
61 1
300 100 300
1000 100
2576 859
2576 52375
859
4147 2715 4147
1428 1 2715
Chironollid pupae 1 100 859 271 5
Mean number of organismssample 276 standard deviation 72
nean nurn b er 0 f organIsms I 2 236974 Standard deviation 61410
H = 1 78 SD= 060 SR= 1 23 J= 051
A-24
STATION 55 Date 18 June 1984 Depth 18 m Salinity (bottom)1 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (no 1m2) occurrence
Taxa (X) X SD
Nematoda 160 1000 137376 43967 Turbellaria 1 100 859 271 5 Oligochaeta 61 1000 52375 31985 ~~iQQY~kY~~ int~[mQi~ ~Q[Qipound~l~ m~nini~ biIDnQ~Ylb[s sp
3 3 3
300 300 300
2576 2576 2576
4147 4147 4147
~Q[Q~bi~ ~slIDQni~ Chironomid larvae
85 6
1000 600
72981 5152
34165 4434
Mean number of organismssample 322 Standard deviation 75
2Mean number 0 f organIsms m 276469 Standard deviation 64099
H= 178 5D= 065 SR= 0B4 J= 059
A-25
Frequency Density (no2) occurrence -----------------
Taxa (7) X SD
Nematoda 104 1000 89294 47409 Turbell ar i a 1 100 859 2715 ~~~nQ~sect imni~Q~ tjQQsectQlis flQig~ Oligochaeta
2 1
297
100 100
1000
171 7 859
255004
5430 271 5
146273 ~~i~QYsect~Y~lls ilr2is gQrQi~y~ IDDilDia
24 4
600 300
20606 3434
27212 6003
Ostracoda 2 200 171 7 3620 biDQSy~b~C~ sp M~QYsectisect m~r~~Qi ~QrQeniy QD Harpacticoida
157 1 1 1
900 100 100 100
134800 859 859 859
73197 2715 2715 2715
sectpoundQttQDs SsDQD 113 900 97022 61656
STATION 45 Date 2 July 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) No of samples 10
172 C
Mean number of organismssample 708 Standard deviation 339
M ean num b er f 20 organisms 607889 Standard deviation 290B22
H= 216 SD= 073 SR= 1 27 J= 058
1-26
STATION 18 Date 2 July 1984 Depth 24 WI
Sal inity (bottom) 00 ppt Temperature (bottom) 172 C No of samples 10
--------------------------------~-----------------------------------------Frequency Density (nom2)
Total occurrence Taxa number (7) X SD
Nematoda 202 1000 173437 113532 ~~~nih~sect mnpoundQ~ Oligochleta
4 102
400 1000
3434 87577
4434 54873
~~igQYsect~Y~12 inl~rmgi2 ~Q[~poundYl~ m~ni~nsectisect bimnQpoundylh~[~ Spa
115 4
15
900 300 900
98739 3434
12879
100720 6003 9274
~Q[QQniY~ sect~QDi~ 55 900 47223 40525 Harpacticoida 1 100 859 2715 sectpoundQiiQlD SDg~DEisect Chironomid larvae
2 6
200 400
1717 5152
3620 7240
Hymenoptera 1 100 859 2715 Hydracarina 1 100 859 2715
Mean number of organismssample 508 Standard deviation 253
2Mean num ber 0 f organIsms m 436169 Standard deviation 217580
H= 225 SD= 074 SR= 1 22 J= 063
A-27
STATION 58 Date 2 July 1984 Depth 58 1
Salinity (bottom) 00 ppt Temperature (bottom) IBO C No of samples 10
Frequency Density (no2) Total occurrence
Taxa number ltX) i SD
Nematoda 151 1000 129649 42729 Turbellaria 1 100 859 2715 01 i gochaeta 41 1000 35203 22698 ~~i~e~~~ int~~m~~ 3 200 2576 5795 btbQglYRhY~ Yir~n~ ~e~~ampy mni~niii bimQeamp~tb~ sp ~e~eQhiY ~mQni Chironomid larvae
1 4 2
68 1
100 300 200
1000 100
859 3434 171 7
58385 859
271 5 6003 3620
1557 1 2715
Mean number of organisassample 272 Standard deviation
I 2Mean num ber 0 f organIsms I 233539 Standard deviation 62546
H = 1 69 SD= 061 SR= 099 J= 053
A-28
73
STATION 55 Date 2 July 1984 Depth 15 III
Salinity (bottom) 00 ppt Temperature (bottom) 182 C No of samples 10
Frequency Density (nom2) occurrence
Taxa (X) X SD
Nematoda 184 1()00 157982 5264B Turbellaria 1 100 859 271 5 Oligochaeta ~~iQQ~sect~Y~ll~ n~[~~Qi~ bitnggYQDYsect Yi[~nsect ~QrQipoundM2 m2ni~nsectisect bimnQpoundYn~[2 sp ~QrQQhiM Qni Harpacticoida
91 2 1 B 2
96 2
1000 200 100 500 200
1000 200
78133 171 7 859
6869 171 7
82426 1111
26058 3620 271 5 1890 3620shy
25980 3620
ChirDnomid larvae 5 400 4293 6071 Chironolllid pupae 1 100 859 2715
Mean number of organismssample 393 Standard deviation 53
2t1ean nUllber Df organlsms III 337430 Standard deviatiDn 45080
H= 187 SD= 067 SR= 116 J= 054
A-29
STATION 45 Date 17 Jul y 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (X) X SD
Nematoda 215 1000 184599 45837 ~~n~b~~ imDipoundQ Qe~Qni fllHi2
3 1
300 100
2576 859
4147 2715
Oligochaeta 305 1000 261873 147955 ~~iQQY~k~ in~rm~2i ~Qr~ipoundYl IDniln~i~ Ostracoda
17 1 2
500 100 200
14590 859
171 7
22554 2715 3620
bmnQpound~ihr sp ~QCQQhiY ~lQD~
176 1
1000 100
151114 859
57125 2715
Harpacticoida 4 300 3434 6003 sectQ~~Qn poundnQnai~ Chironomid larvae
91 5
1000 400
78133 4293
61310 6071
Mean number of organismssample 821 Standard deviation 275
M b f 2ean num er 0 organlsms m 70491 1 Standard deviation 236369
H= 215 SD= 073 SR= 114 J= 060
A-30
STATION 18 Date 17 Jul y 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom 203 C No of samples 10
Frequency Density (001 2 Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 339 1000 291065 119140 Turbellaria 3 200 2576 5795 ~~2~b~~ limnipoundQ12Oligochaeta
4 18S
300 1000
3434 161417
6003 89393
~~iQQy~~~ls in~(ID~Qi bim~Qampy~bg(2 Spa
34 16
800 700
29192 1373B
22967 15252
~g(gebi~m ~21mQni2 Harpacticoida
52 3
1000 200
44647 2576
25212 5795
2ampQ11Q1202 ampS02Qg~2i2 Chironomid larvae
18 10
700 700
15455 8586
13904 701 0
Mean number of organi$mssample 667 Standard deviation IBB
H ean nurn b er 1 20 f organIsms m 572686 Standard deviation 161750
H = 1 99 SD= 065 SR= 090 J= 060
A-31
STATION 58 Date 17 July 1984 Depth 55 AI
Salinity (bottom) 00 ppt Temperature (bottom) 197 C No of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nellatoda 173 1000 14853B 66390 Turbellaria 1 100 859 271 5 ~~~n~hu ini~QA Oligochaeta
1 46
100 1000
859 39496
2715 26293
~gipoundQy~~ygl2 in~rJg~i~ b1nQglYRnY~ Yi( Bivalvia
6 2 1
400 200 100
5152 1717 859
8295 3620 271 5
ei~ IDnH~n~i~ 2 200 171 7 3620 Ostracoda 1 100 959 271 5 biIDQHlh~( Spa ~Q(QRbim ~21Qnisect Diptera pupae
1 94
1
100 1000 100
859 80708
859
2715 35332 2715
Heleidae 1arvae 5 500 4293 4525 Chironomid larvae 1 100 859 2715
Mean number of organismssample 335 Standard deviatiDn 113
Mean number of organismsRI2 287631 Standard deviation 97413
H= 1 86 SO= 064 SR= 155 J= 049
A-32
STATION 55 Date 17 July 1984 Depth 18 m Sali nity (bottom) 00 ppt TeAlperature (bottom) 199 C No of samples 10
Frequency Density (nom2 ) occurrence
Taxa (X) x S D
Nematoda 61 1000 52375 33972 Turbellaria 1 100 859 2715 Oligochaeta 24 900 20606 11590 ~~i2QY~k~~1 iOi[2 bimDQ~xlb~r sp ~Q[QQhi~ sectgni~ Chironomid larvae
3 1
38 3
200 100
1000 300
2576 859
32627 2576
5795 2715
19326 4147
Mean number of organismssample 131 standard deviation 54
M b f 2ean num er 0 organIsms 112477 Standard deviation 46757
H= 184 SD= 066 SR= 085 J= 065
bull
A-33
STATION 45 Date 1 August 1984 Depth 58 m Sal i nity (bottoll) 03 ppt Temperature (bottom) 203 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa nUllber (X) X SD
Nematoda 145 1000 124417 52344 Turbellaria 1 100 859 2715 Mmth~sect iHpoundQ~ Q~~Qi ilQ[i9Oligochaeta
5 3
196
500 300
1000
4293 2576
168286
4525 4147
91064 ~igQYsect~~li int9i Ostracoda
2 3
100 300
171 7 2576
5430 4147
bimnQpoundtl sp ~Q[Q2hiY sectlQni~
240 6
1000 600
206064 5152
73526 4434
sectpoundQtQl poundngnai~Helei dae larvae
1862 1
1000 100
1598713 859
966134 271 ~
Mean number of organismssample 2464 Standard deviation 1156
211 ean num ber 0 f organIsms II 2115590 Standard deviation 992518
H= 124 SD= 041 SR= 089 J= 036
A-34
STATION 1S Date 1 August 1984 Depth 24 II
Salinity (bottom) 00 ppt Temperature (bottom) 198 C No of samp I es 10
Frequency Density (nom2) occurrence ---------------- shy
Taxa (X) X S D
Nuertea 1 100 859 2715 Nellatolllorpha 1 100 859 2715 Nematoda 248 1000 212933 108288 Turbellaria 4 400 3434 4434 ~untb~la Hli~g Oligochaeta
4 206
400 1000
3434 176872
4434 75309
~~igQYli~dli i[t~(gi~ ~QtQpound l binQ~ybt2 sp ~2l~bi Q[i ~2tlgtQ(ila tirisect sectpoundQtel poundl9lla Chironomid larvae
10 1
20 205
1 574
9
500 100 800
1000 100
1000 400
8586 859
17172 176013
859 492836
7727
10709 271 5
14021 48104
271 5 150531
13696
Mean number of organismssample 1284 Standard deviation 290
M b f I 2ean nurn er 0 organIsms III 1102442 Standard deviation 2488B5
H= 211 SD= 071 SR= 1 16 J= 057
A-35
STATION 58 Date 1 August 1984 Depth 55 m Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samp 1es 10
Frequency Densi ty _ ltnom2 ) Total occurrence
Taxa number (7) X SD
Nemertea 1 100 859 2715 Nematoda 22 900 18889 15036 Turbellaria 1 100 859 2715 Oligochaeta 19 700 16313 17385 biiQQgl~QhY~ YiCg~~ 2 200 171 7 3620 ~Q[~i~~l~ m2nil~n2i2 ~Q[QehiYm ~lmQni2
4 164
300 1000
3434 140810
6003 103048
Heleidae larvae 8 500 6869 8868
Mean number of organismssample 221 Standard deviation 111
I 2Mean num ber 0 f organIsms m 189751 Standard deviation 95391
H = L 37 SD= 043 SR= 090 J= 046
A-36
STATION 55 Date 1 August 1984 Depth 15 m Salinity (bottoll) 01 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (i ) X SD
Nemertea 1 100 859 2715 Neutoda 122 1000 104749 7394B Turbellaria 4 300 3434 6003 ~~~~~nt~ secte~poundQa~ Oligochaeta
1 118
100 1000
859 101315
2715 61223
~giQgY~k~~l iot~[m~Qi btbQg~2b~ Y[O ~grQipound~ ~nl~ni b~ngpound~tb~[ Spa
3 1 5 1
200 100 500 100
2576 859
4293 859
5795 2715 4525 2715
~Q[QebiYm ~mQoi sect~QttQ~ ~OQOi Heleidae larvae
42 2 2
800 200 100
36061 171 7 171 7
21341 3620 5430
Chironomid larvae 4 400 3434 4434
Mean number of organismssapIe 306 Standard deviation 169
M b f I 2ean nurn er 0 organIsms m 262732 Standard deviation 145101
H = 198 SD= 067 SR= 1 45 J= 054
A-37
~-- --------------~~-------------
STATION 45 Date 17 August 1984 Depth 61 1
Salinity (bottom) 10 ppt Temperature (bottom) 210 C No of samp 1es 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nematoda 240 1000 206064 130213 ~~h~sect limQ tjQ~~Hi~ fQ[i~~ Oligochaeta
31 2
245
400 100
1000
26617 1717
210357
75228 5430
121374 babgglYQbl~ Yi[~sect 1 100 859 2715 Ostracoda 1 100 859 271 5 biQ~xtb~[ Spa ~~Q~~isect ~[pound~Qisect ~Qgebi HQOi
333 2
143
1000 200
1000
28591 4 171 7
1227BO
106553 3620
106860 sectpoundQUg~ poundg~nsectisect 1738 1000 1492247 68441 7
Mean number of organismssample 2736 Standard deviation 944
M b f I 2ean num er 0 organlslls m 2349130 Standard deviation 810600
H= 172 SD= 056 SR= 079 J= 052
A-38
STATION 18 Date 17 August 1984 Depth 27 III
Sal i ni ty (botto) 01 ppt Temperature (bottom) 214 C No of samples 10
Frequency Density (nom 2 ) occurrence
Taxa (X) X SD
Nematoda 186 1000 159700 62468 ~tgt SPa 2 100 171 7 5430 Turbellaria 8 400 6869 8868 ~~ntbg2 imnipoundQ 12 700 10303 11304 Oligochaeta 283 1000 242984 90509 ~~iQQY~~Y~lls inlgtmggisBivalvia
4 1
400 100
3434 859
4434 271 5
~Qt~i~Y nilnsectisectbimnQpoundttbg[s SPa ~QtQQbi~ islmQDi2
1 17
286
100 900
1000
859 14596
245560
271 5 10747 83461
sectpoundetteln poundDsggnsectisect Chironomid larvae
526 4
1000 3Q0
451624 3434
179610 6003
Mean number of organismssapIe 1330 Standard deviation 162
Mean nurn ber I 20 f organIsms m 1141938 Standard deviation 139389
H= 214 SD= 073 SR= 1 06 J= 060
A-39
STATION 58 Date 17 August 1984 Depth 55 II
Salinity (bottom) 01 ppt Temperature (bottom) 220 C ND of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (7) x S D
Nematoda 68 1000 58385 27689 Turbellar i a 4 200 3434 8295 Oligochaeta 19 800 16313 13084 ~~i~Q~k~~l~ in~~[m~i bitUQ9Y2bYa Yi[~na Bivalvia
3 3 4
300 300 300
2576 2576 3434
4147 4147 6003
gQ[QipoundYl~ mnilDa 1 100 859 2715 binQpoundY~[ sp gQ[Q2UY a~mgnia sect~Qtgl~n ~n~~ni
2 338
6
100 1000 400
171 7 290207
5152
5430 56636 7240
Mean number of organismssample 448 Standard deviation 72
W b f 2lean num er 0 organlsms II 384653 Standard deviation 61988
H = 1 27 SD= 041 SR= 1 02 J= 038
A-40
STATION 55 Date 17 August 1984 Depth 18 m Salinity (bottom) 00 ppt Temperature (bottol) 223 C No of samples 10
Frequency Density (nom 2 ) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 291 1000 249853 118104 Turbellaria 1 100 859 2715 M~ntb~ mni~Q Oligochaeta
1 47
100 1000
859 40354
2715 28347
~~iQQ~sectkY~ll int~[m~gi bitbQQ1YSDY Yi(gn Bivalvia
25 12
6
900 500 400
21465 10303 5152
1231 0 18459 7240
~Q~2ipoundY mnil~ni Ostracoda
11 8
400 600
9445 6869
12442 6773
bmnQpoundYb~r~ SPa 52 1000 44647 19746 ~QrQsbY lmgnisectsQiielo snQ~ni~ Chironomid larvae
43 5
15
1000 400 BOO
36920 4293
12879
21436 6071 8344
Mean number of organismssample 517 Standard deviation 174
M b f I 2ean num er 0 organlsms m 443896 Standard deviation 149431
W = 228 SD= 065 SR= 1 33 J= 062
A-41
STATION 45 Date 29 August 1984 Depth 55 III
Salinity (bottom) 07 ppt Temperature (bottom) 199 C No of samples 10
Frequency Density (noI 2) Total occurrence
Taxa number (X) X SD
Nematoda 192 1000 164851 98380 ~sntbsect limnipoundQlDligochaeta
2 198
200 1000
171 7 170003
3620 67339
~Q[eipoundYls msniln~isect Ostracoda
1 4
100 400
859 3434
2715 4434
bimnQpoundytb[s Spa gQ[Qeniy sect21QOi~ sectpoundQttQlsO poundsOsggOi
164 87
2468
1000 1000 1000
140810 74698
2119025
39283 39460
840890
Mean number of organismssample 311 6 Standard deviation 101 1
ill b f 2nean nUll er 0 organIsms 2675398 Standard deviation 8682B8
W= 116 SD= 036 SR= 060 J= 039
A-42
STATION 18 Date 29 August 1984 Depth 30 bull Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samples 10
Total Frequency occurrence
Densi ty 2
(nom )
Taxa number (~ ) x S D
Nematoda 150 1000 128790 28905 Turbellaria 7 400 6010 9096 ~nh imni~Qj Oligochaeta ~~i~2Y~k~~1 ini~CIDgii bih2g~Qb~ Yi(~U2 Bivalvi a
B 145
1 1 2
600 1000
100 100 200
6869 124497
859 859
171 7
677 3 84732
271S 2715 3620
~Q[Qi~yli miDllgni bimn2pound~ih~C sp ~QtQehiY imQUia Harpacticoida
7 7
265 1
500 300
1000 100
6010 601 0
227529 859
8145 10747
139462 2715
sect~QtiQDi ~Q~Q~i~ Chironomid larvae
2471 2
1000 200
2121601 171 7
1063112 3620
Mean number of organismssample 3067 Standard deviation 121 9
2Mean number 0 f organIsms m 2633326 standard deviation 1046718
H = 1 09 SD= 034 SR= 1 04 J= 029
A-43
STATION 58 Date 29 August 1984 Depth 55 111
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (noI 2 ) Total occurrence -----------------
Taxa nUllber (X) X SD
Nemertea 4 400 3434 4434 Nuatoda 64 1000 54950 25016 Turbellaria 9 400 7727 11047 ~Hl~b limli~Q19 Oligochaeta
1 37
100 1000
859 31769
2715 19006
i~Qyh il(~~ bHtlQSlheln Yl Bivalvia
4 4
20
200 300 400
3434 3434
17172
8215 6003
26541 ~e(ijY l bQ~dlH sp
26 1
700 100
22324 859
25662 2715
~Q[QQhil iQ sectjgUell HD Heleidae larvae
418 20
1
1000 800 100
358895 17172
859
129443 12799 271 5
Mean number of organismssample 609 Standard deviation 175
nean num b er 0 f organIsms 1 111 2 522887 Standard deviation 150164
H= 176 SD= 051 SR= 1 30 J= 047
A-44
I I
I
I
STATION SS
Date 29 August 1984 Depth 21 1
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (no2) Total occurrence
Taxa nUllber (X) x S D
Nematoda ISO 1000 128790 37969 Turbellaria 1 100 859 271 5 Oligochaeta 48 1000 41213 16088 ~i~g~sect~~l iQ~~mgi bi~QQg~gb~sect ~i~nsect
10 14
600 600
eSB6 12020
9050 14137
Bivalvia 4 200 3434 7240 ~Q[Q~Yl niQaa Ostracoda
15 7
700 SOO
12879 6010
15806 7069
bmQg~~~b~ SPa 14 800 12020 8295 ~g[gaby mgni sect~g~~Qn ~ngnai Chironomid larvae
IB4 25 9
1000 900 700
157982 21465
7727
35563 16810 6335shy
Mean number of organismssample 481 Standard deviation B6
2Mean number 0 f organlsms m 412987 Standard deviation 74131
H= 24S SD= 074 SR= 1 23 J= 068
A-45
STATION 45 Date 14 September 1984 Depth 61 11
Salinity (bottom) 03 ppt Temperature (bottom) IB4 C No of samples 10
---------------------------------~----------------------------------------
Taxa TotalnUlllDer
Frequency occ~~~ence
Density (no 2) -----X-------sect7B
Nematoda 189 1000 162275 85233 t1tQ SPa
Turbellaria 2 2
200 100
171 7 171 7
3620 5430
~~~nIng limoifQl t1QQQDi~ flQriQ Oligochaeta
5 19
142
400 800
1000
4293 1631 3
121921
6071 12442 30504
~QQifYl mDl~D bimoQpoundt1hgr Spa Cumacea
19 184
2
800 1000 200
1631 3 157982
171 7
130B4 69541 3620
~Q[QnniYm ~~lmQDi Harpacticoida
118 1
1000 100
10131 5 B59
43367 2715
sectfQIIQD fOQgO Chironomid larvae
1780 1
1000 100
1528308 859
673586 2715
Mean number of organismssample 2464 Standard deviation 874
M ean num b er f 20 organlsms 2115590 Standard deviation 750305
H= 151 SD= 046 SR= 1 07 J= 041
A-46
STATION 18 Date 14 September 1984 Depth 21 III
Salinity (bottom) 01 ppt Temperature (botto) 182 C No of samples 10
Frequency DenSity (nom 2 ) Total occurrence ---------------- shy
Taxa nUlDber (i) X SD
Nemertea 1 100 859 271 5 Nematoda 186 1000 159700 44925 Turbellaria 16 400 13738 20717 ~~Dth~~ limni~Ql Oligochaeta
13 55
700 900
11162 47223
9096 30085
~Q~ei~Yl nil~Qi~ 17 900 14596 7069 bimDg~lbg[ Spa b 500 5152 6003 ~Q[Q2niY ~lgQi~ Harpacti coi da
562 2
1000 200
482533 171 7
136766 3620
sectpoundQttQ~Q~ ~n~ni 791 1000 679153 324290
Mean number of organismssample 1649 Standard deviation 447
I 211ean nUll ber 0 f organIsms I 1415831 Standard deviation 384136
H= 179 SD= 064 SR= 084 J= 054
A-47
STATION 58 Date 14 September 1984 Depth 58 III
Salinity (bottom) 01 ppt Temperature (bottom) 191 C No of sampl es 10
-------------------------------------------~------------------------------Frequency Density (nom 2 )
Total occurrence Taxa number eX) X SD
Nemertea 1 100 859 2715 Nematoda 55 1000 47223 18658 Turbellaria 10 500 8586 11448
1 100 859 2715 Oligochaeta 41 1000 35203 17850 ~~iQQ~~gll iu1g[m~i ~Q[Q~Yl nilD bimnQ~Y~h[ Spa ~Q[Q~hiYm lmgui sectpoundQilg1D poundU2D Chironomid larvae
4 10
2 277
23 4
100 500 200
1000 700 300
3434 8586 171 7
237832 19748 3434
10861 11448 3620
50561 21051 6003
Mean number of organismssample 428 Standard deviation 51
M b f 2ean num er 0 organIsms III 367481 Standard deviation 43743
H= 179 SD= 055 SR= 114 J= 052
A-48
I I
STATION SS Date 14 September 1984 Depth 21 II
Salinity (bottom) 01 ppt Temperature (bottom) 190 C No of samples 10
--------------------------------------------------------------------~-----
Frequency Density (no1I2) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 102 1000 87577 39200 Oligochaeta 34 700 29192 31142 ~iQ2Y~y1 int(mgi~ bithQgl~en~ Yi(gDsect ~Q(~i~Y m~DilgDsecti~ bimDQamp~1h(sect sp ~2(QQhiY slmQD 2poundQiiQlsD ~sD~g~nsecti Chironomid larvae
36 18 16 17
100 16
3
1000 600 800 700
1000 800 300
30910 15455 13738 14596 85860 13738 2576
157BO 20953 10078 14621 32126 10861 4147
Mean number of organismssample 342 Standard deviation 97
2Mean nUllber 0 f organlsms m 293641 Standard deviation 83617
H= 262 SD= 079 SR= 095 J= 083
A-49
Appendix B--Sediment particle size and organic content of the Cathlamet Bay
benthic invertebrate sites 13 March through 14 September
1984
iii
1
Station 18a 48 54 57
Survey 1 1 1 1
Month March March March March
Day 13 13 13 13
Particle size (mm) Phib Percent by weight
gt 40 -2 000 000 000
20- 40 -1 000 000 000
10- 20 0 000 009 000
05- 10 1 018 1079 032
025- 050 2 545 7583 2468
0125- 025 3 8731 1225 6783
00625-0125 4 491 037 657
lt0625 (5-12) 216 067 060
Organic Content 160 116 128
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
b Phi= -log2(sediment particle diameter in mm)
B-1
Station 18a 48 54 57
Survey 2 2 2 2
Month April April April April
Day 5 5 5 5
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 003 093 000
05shy 10 1 005 31 75 023
025shy 050 2 087 5904 2368
0125- 025 3 6316 750 7155
00625-0125 4 3056 026 427
lt0625 (5-12) 533 052 028
Organic Content 081 077 065
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-2
Station 45 55 58
Survey 3 3 3 3
Month April April April April
Day 18 18 18 18
Particle size (mm)
gt 40
Phi
-2
Percent by weight
000 000 000
20shy 40 -1 000 000 000
10shy 20 0 005 009 004
05shy 10 1 010 027 013
025shy 050 2 015 095 225
0125- 025 3 097 536 6111
00625-0125 4 453 2821 2205
lt0625 (5-12) 9420 6511 1442
Organic Content 31 42 14
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-3
Station 18a 45 55 58
Survey 4 4 4 4
Month May May May May
Day 4 4 4 4
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 021
05shy 10 1 000 065 063
025shy 050 2 012 370 230
0125- 025 3 091 4099 4696
00625-0125 4 322 3650 3052
lt0625 (5-12) 9575 1810 1939
Organic Content 330 180 160
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-4
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
5
May
17
000
000
005
016
217
5862
2729
1170
100
45 55 58
5 5 5
May May May
17 17 17
Percent by weight
000 000
000 000
005 008
113 031
325 274
1903 5613
2784 2401
4870 1672
240 110
000
000
000
010
020
079
397
9494
390
B-5
Station 18al 45 55 58
Survey 6 6 6 6
Month June June June June
Day 6 6 6 6
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 020
05shy 10 1 005 051 027
025shy 050 2 005 301 1 79
0125- 025 3 074 3189 5404
00625-0125 4 599 4118 2885
lt0625 (5-12) 9317 2332 1485
Organic Content 340 240 150
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-6
Station
Survey
Month
Day
Particle size Cmm) Phi
gt 40 -2
20shy 40 -1
10shy 20 a
05shy 10 1
025shy 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
7
June
18
000
000
005
029
138
3917
4143
1768
180
45
7
June
18
55 58
7 7
June June
18 18
Percent by weight
000
000
000
010
020
080
427
9464
310
000 000
000 000
000 007
011 022
057 190
957 5286
3023 2642
5957 1853
1 70 110
B-7
Station 18al 45 55 58
Survey 8 8 8 8
Month July July July July
Day 2 2 2 2
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 006 002 006
05shy 10 1 006 0l3 023
025shy 050 2 017 088 171
0125- 025 3 074 2712 5365
00625-0125 4 552 3892 3081
lt0625 (5-12) 9345 3294 l354
Organic Content 410 210 160
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-8
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
9
July
17
000
000
003
013
130
4294
4434
1127
130
45
9
July
17
Percent
000
000
000
006
012
051
046
9885
290
55
9
July
17
by weight
000
000
019
048
091
628
3616
5597
030
58
9
July
17
000
000
004
022
158
5017
3148
1650
140
B-9
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18al
10
August
1
45
10
August
1
55
10
August
1
58
10
August
1
Percent by weight
000 000
000 004
001 004
009 018
018 088
098 306
049 2510
9824 7070
000
005
045
763
3604
4495
932
156
100 190 060
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-10
Station 18 45 55 58
Survey 11 11 11 11
Month August August August August
Day 17 17 17 17
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000 000
20- 40 -1 005 000 000 000
10- 20 0 021 003 000 210
05- 10 1 064 009 000 159
025- 050 2 226 027 045 2656
0125- 025 3 3259 131 712 3719
00625-0125 4 4327 195 1737 1159
lt0625 (5-12) 2098 9635 7506 2097
Organic Content 210 300 160 100
Ii I
B-11
Station
Survey
Month
Day
Particle size (mm) Phi
gt40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
12
August
29
000
000
012
046
186
3465
4498
17 93
241
45
12
August
29
55 58
12 12
August August
29 29
Percent by weight
000
000
002
009
026
118
189
9656
540
000 000
000 000
003 011
011 028
055 1013
859 5033
1596 1827
7476 2089
1 70 120
B-12
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
_-------------------- shy
B-13
STATION 18 Date 18 April 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom) No of samples 15
Frequency Density (nom2) Total occurrence
Taxa nueber (X) x s D
Nemertea 13 533 7441 9663 Nematomorpha 3 200 171 7 3555 Nematoda 195 1000 111618 63675 Turbell ari a 9 467 5152 6326 ~~ni~~ i~ni~Ql~ 30 867 17172 129B1 Oligochaeta 580 1000 331992 108880 ~QC~i~Ml~ m~nil~n~isectOstracoda
28 18
1000 667
16027 10303
11179 10364
~Q[Q~~iYm sect~Qni2 sect~ci~ gniQQnHarpacticoida
105 1
17
1000 67
400
60102 572
9731
25553 2217
19970 Chironollid larvae 16 667 9158 8B6B
Hean number of organismssample 677 Standard deviation 199
M ean num b I 2er 0 f organIsms AI 580986 Standard deviation 171095
w = 202 SD= 062 SR= 1 10 J= 056
95 C
A-7
STATION 58 Date 18 April 1984 Depth 67 m Salinity (bottom) 00 ppt Temperature (botto) No of samples 15
Frequency Density (nom2) Total occurrence
Taxa number (~) X SD
Nemertea 62 933 35489 26338 Nematoda 224 1000 128218 49903 Turbellaria 9 600 5152 4354 ~nt~sect imni~Q Oligochaeta
1 79
67 1000
572 45220
2217 23506
bnQgYRhY~ Yi~~nE ~Q(~i~Y nil~ni Ostracoda
2 10 19
67 533 600
1145 5724
10876
4434 6214
10989 ~Q[QeniY sectQOiHarpacticoida
30 2
B67 133
17172 1145
12142 3021
Heleidae larvae 6 333 3434 5430 Chironomid larvae 9 400 5152 7B1 5 Chironomid pupae 2 133 1145 3021
Mean number of organismssample 303 Standard deviation 94
I 11 ean num ber 0 f organlsms 2 260442 Standard deviation 81043
H= 233 SO= 070 SR= 1 36 J= 063
97 C
A-B
Frequency Density (nolm 2) Total occurrence -----------------
Taxa number (7) X SD
Nemertea 16 467 9158 10989 Nematoda 266 1000 152258 54541 Turbellaria 23 600 13165 15518 ~l~nH ~Q~iQH 2 133 1145 3021 Oligochaeta 181 1000 103604 56532 bi~hQg~Qn~~ ~it~l~ ~QtQifg mli~lsectisectOstracoda
3 59 15
200 1000 733
1717 33772 8586
3555 23054
7256 ~Q[QQhiY HmQtlsect ~Q[QehiYm sect21tlfQ[lg EQlQQQt~i hQ~i
466 3 1
1000 200 67
266738 171 7 572
75094 3555 221 7
Harpacticoida 30 400 17172 40402 Chironomid larvae 10 533 5724 6214
Mean number of organismssa_pIe 717 Standard deviation 143
I 2Mean number 0 f organlsms m 615330 Standard deviation 122532
H= 226 SO= 072 SR= 119 J= 061
STATION 55 Date 18 April 1984 Depth 30 1ft
Salinity (bottom) 00 ppt Temperature (bottom) 93 C No of SaIIples 15
A-9
STATION 45 Date 4 Hay 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 103 C No of samples 10
Frequency Density (noI2) Total occurrence ---------------- shy
Taxa number (Xl X SD
Neutoda 269 1000 230963 167296 Turbellaria 1 100 859 2715 ~u~yuti Q~iQ ~Ub imni~Q
1 2
100 100
859 171 7
2715 5430
j2~Qn flec Oligochaeta
28 169
BOO 1000
24041 145103
19326 74351
~igeYk~ll iulCIDai ~Q(Qi~Y uini Ostracoda
32 4 5
aoo 400
400
27475 3434 4293
22463 4434 6071
biQQ~~tbt sp ~e(QQbYm mQoi sectampQeD ~nQDisect Chironomid larvae
25 2
578 2
900 200
1000 200
21465 1717
496271 171 7
15279 3620
293820 3620
Mean number of organismssample 111 8 Standard deviation 522
11 b f I 2ean num er 0 organIsms m 95991 5 Standard deviation 447842
H= 193 SD= 065 SR= 118 J= 052
A-10
STATION 18 Date 4 Hay 1984 Depth 34 II
Salinity (bottom) 00 ppt Temperature (bottom) 104 C No of saMples 10
Frequency Density (noI 2 ) occurrence ----------------shy
Taxa (X) X SD
Nemertea 10 600 8SB6 10709 Nuatoda 153 1000 131366 47899 Turbellaria 8 600 6869 6773 ~n1b limnpoundQl Oligochaeta
11 147
700 1000
middot9445 126214
9449 6231 7
~i~g~kXl in1(m~i ~g(2iY OiOi Ostracoda
86 4 1
900 300 100
73840 3434 859
61543 6003 2715
bimoQpoundx1b( sp ~2(QQbiYm mgoiDi ptera adult
3 57
3
300 900 300
2576 48940
2576
4147 21815 4147
Chironomid larvae 4 300 3434 6003 Chironomid pupae 1 100 859 2715
Hean nUMber of orQanismssample 489 Standard deviation 160
b f 2nean nUll er 0 organIsms II 418997 Standard deviation 137721
H= 243 SD= 076 SR= 1 34 J= 066
A-l1
STATION 5B Date 4 Hay 1984 Depth 61 bull Salinity (botto~) 00 ppt Temperature (bottom) 110 C No of suples 10
Frequency Density (nom 2) Total occurrence ---------------- shy
Taxa number (X) X SD
Neertn 41 1000 35203 21206 Nematoda 211 1000 181165 53305 Turbellaria 4 200 3434 7240 Oligochaeta 89 1000 76415 32240 ~i~2~~~11~ iU1(~i~bi1begygny YitQ ~e(biYl ~OiDi OstracDda
4 3
20 1
400 200 BOO 100
3434 2576
17172 859
4434 5795
19829 2715
biue~1bt~ sp ~2(egniY Imeoi sectg11g1O OdD Helei dae larvae
5 32
1 1
400 900 100 100
4293 27475
859 859
6071 18010 2715 2715
Chironomid larvae 7 400 6010 9096
Mean number of organismssample 419 Standard deviation 93
b f 2ean nUll er 0 organIsms m 359753 Standard deviation 79875
H= 221 SD= 068 SR= 138 J= 060
A-12
Frequency Density (nolm 2) occurrence -----------------
Taxa (X) X SD
Nemertea 23 900 1974S 15171 Neutollorpha 1 100 859 271 5 Nellatoda 269 1000 230963 69923 Turbellaria 10 600 8586 991 4 ~~xYnki Q~ampiQ 4 300 3434 6003 ~nb limnipoundQl Oligochaeta
1 79
100 1000
859 67829
2715 40363
~i~Q~kXl io[~i biDe9XQDX ~i[~OBi valvi a
11 3 1
800 300 100
9445 2576 859
6335 4147 271 5
~Q[~poundY mnil~n bimoQampXD[ sp ~Q[QabiY lQO Harpacticoida
18 2
159 1
700 200
1000 100
15455 171 7
135659 859
13904 3620
54272 2715
Chironomid larvae 2 200 171 7 3620 Trichoptera larvae 1 100 859 2715
STATION 55 Date 4 May 1984 Depth 21 m Salinity (bottom) 00 ppt Temperature (bottom) 107 C No of suples 10
Mean number of organismssamples 594 Standard deviation 147
Mean number of organismsm2 501422 Standard deviation 126525
H= 219 aD= 069 SR= 1 63 J= 055
A-13
STATION 45 Date 17 May 1984 Depth 61 m Sal i ni ty (bottom) 01 ppt Temperature (bottom) 121 C No of sampl es 10
Frequency Total occurrence
Taxa nUlllber (7)
NelDertea 1 100 859 2715 Nematoda 163 1000 139952 127996 Polychaeta 1 100 859 2715 ~~~n~h~ imni~Qs Hobsonia florida
2 6
200 600
171 7 5152
3620 4434
Oligochaeta 329 1000 282479 13291 8 ~~lQQYsectk~~12 in~~rmQi 57 900 48940 33142 ~Qr~ipound~2 ffi2niDi 6 500 5152 6003 Ostracoda 5 200 4293 10898 bimDg~yth( SPa 13 600 11162 12176 ~Q(Qebi~m sectQDisect Harpacticaida
2 2
200 100
1717 1717
3620 5430
2poundQttQD poundDQDsectisectDiptera adult
296 1
1000 100
254146 859
172633 271 5
Mean number of organismssample 884 Standard deviation 326
b f I 2nean num er 0 organlss m 759002 Standard deviation 280131
H= 209 SD= 071 SR= 1 33 J= 055
A-14
STATION 18 Date 17 May 1984 Depth 30 m Salinity (bottom) 00 ppt Temperature (bottom) 122 C No of samples 12
Frequency Density (nom2) Total occurrence -----------------
Taxa number (X) X SD
Nematoda 50 833 35775 22815 ~ntb limnipoundQl 3 Oligochaeta 97
250 833
2147 69404
3883 48495
~igQ~~k~ intr~ 27 ~QrQipoundY mnin~i~ 5
667 333
19319 3S7S
19068 5740
Ostracoda 1 83 716 2479 bimnQpound~nr sp 5 ~Q(Q~bY ~mQni S4 ~Q(Q~niY ~QinipoundQ(n 3
333 833 250
3578 60102
2147
5740 43780 3883
fgnQ2Q(i bQ~i 1 sectpoundQtgO poundnQn~i 2 Chironomid larvae 4
83 167 250
716 1431 2862
2479 3342 5592
Mean number of organismssample 235 Standard deviation 116
nean nURl b er 0 f organlslls II 2 201771 Standard devi ati on 99221
H= 236 SD= 075 SR= 1 35 J= 066
A-15
STATION 58 Date 17 May 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) 123 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nemertea 2 100 171 7 5430 Nematoda 75 1000 64395 34404 ~~2Qih~a limQi~Q 2 200 171 7 3620 Oligochaeta 60 1000 51516 33376 ~~igQY~~~12 iQ~[~~gi 2 200 171 7 3620 bitQQ9~Bh~sect Yr~Qsect 3 200 2576 579~
gQ[Qi~Yl ID2Dil~nsectisect Ostracoda
6 6
500 400
5152 5152
6003 8295
binQ~~nr[ sp gg[QQOYm mQQsect sect~QttQn 5n2Q~nsectia Chironomid larvae
2 34
1 1
200 1000
100 100
171 7 29192
859 859
3620 12927 271 5 2715
Mean number of organismssample 194 Standard deviation
2Mean nurn ber 0 f organIsms fA 166568 Standard deviation 56259
H= 225 SD= 072 SR= 1 45 J= 063
A-16
66
STATION 55 Date 17 May 1984 Depth 24 II
Salinity (bottom) 00 ppt Telllperature (bottom) 126 C No of samples 10
Total Frequency occurrence
Taxa nUllber (X) X SD --------------------------------------------------------------~-----------
Nematollorpha 2 200 171 7 3620 Nematoda 63 1000 54092 35297 Oligochaeta 94 1000 80708 44004 ~~iQQY~k~~l iQt~(m~Qi bitnQg~Qh~~ Yi[~Q gQ[QipoundY~ mni~Q~i Ostracoda
10 9 4 2
600 800 300 100
8586 7727 3434 171 7
9050 4874 6003 5430
bimnQ~~ln~[e sp ~Q(QQbiYm mQD ~Q[QQbiYm 2inipoundQ[n~ Chironomid larvae
6 142
3 1
600 1000 200 100
5152 121921
2576 859
4434 50682 5795 2715
Mean number of organismssample 336 Standard deviation 62
2Mean num ber 0 f organisms m 288490 Standard deviation 53421
H= 214 SD= 071 SR= 119 J= 062
A-17
STATION 45 Date 1 June 1984 Depth 61 m Salinity (bottom) 01 ppt Temperature (bottom) 139 C No of samples 10
Total Frequency occurrence
Density (no2)
Taxa nUllber (1) X SD
Nematoda 174 900 149396 132347 Turbellaria 5 200 4293 10898 ~~~QiQ~sect tmQtpoundQ~ ~QQsectQ flQi~sect Oligochaeta ~~iQQysecttygl~ iQl~rm~~i2 ~Q[Qi~~l~ ~~DilgDsectisect Ostracoda
5 20
190 103
12 5
400 900
1000 900
60 (I 400
4293 17172
163134 88436 10303 4293
6071 8095
92563 51524 11304 6071
bimnQpoundytng[ sp ~gQmYsectisect IDg[pound~Qisect ~Q[QQhi~m sectlmQDisect sectpoundQtiQlsectQ pound~Qgsectisect ChironQmid larvae
33 1
10 375
2
900 100 700
1000 200
28334 859
8586 321975
171 7
17196 2715 7010
179201 3620
Mean number of organismssample 935 Standard deviation 254
nurn b 0 f 2lean er organlsms m 802791 Standard deviation 218423
H= 239 SD= 075 SR= 1 22 J= 065
A-18
STATION 18 Date 1 June 1984 Depth 30 AI
Salinity (bottom) 00 ppt Temperature (bottom) 134 C No of samples 11
Frequency Density (no 1m2)
Taxa Total number
occurrence (X)
---------------- shyX SD
Turbellaria 14 636 10928 1157 7 ~~~Qltlg~ ilipoundQ~ Oligochaeta
10 178
727 1000
7805 138937
601 6 67913
~~iQQy~tY~l~ ill~[m~Qi~ 122 636 95227 93619 ~Q[Qipound~ l~i~lsectisect Ostracoda
7 1
455 9 1
5464 78 1
6946 2589
billQylhg[ Spa 16 818 12489 10420 GQ[QQQil HQi~ 139 1000 108496 70934 gQ[Qebi secteiifQ[~ sectQiiQi2 ~Q~sectisect Diptera pupae
1 2 1
9 1 182
11 1
781 1561 781
2589 3473 2589
Chironomid larvae 2 182 1561 3473
Mean number of organismssample 714 Standard deviation 284
nean num b er 0 f organlsms m 2 612728 Standard deviation 244249
H= 232 SD= 075 SR= 1 25 J= 063
A-19
STATION 58 Date 1 June 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 138 C No of samples 10
Frequency Density (noI 2 ) Total occurrence
Taxa number (X) X SD
Nematoda 173 1000 148538 47383 Turbellaria 3 300 2576 4147 Oligochaeta 53 1000 45506 32139 ~giQgY2k~g~ ini~[m~Qi~ bQg91YehY2 Yi[~nsect ~Qr~i~Yl m~nl~n~i
26 1
10
600 100 500
22324 859
8586
3391 2 2715
13424 bimnQpound~Q~[ sp ~Q9~m[Y poundgnitYpoundQlysect ~QtQehiYm ~lQni
4 1
46
200 100
1000
3434 859
39496
8295 2715
22243 Chironomid larvae 1 100 859 271 5
Mean number of organismssample 318 standard deviation 103
M b f I 2ean num er 0 organlsms III 273035 Standard deviation 88842
H = 1 99 SD= 065 SR= 1 08 J= 060
A-20
STATION 55 Date 1 June 1984 Depth 27 m Salinity (bottom) 00 ppt Temp era t u r e (b 0 t tom) 140 C No of samples 10
Frequency Density (nom 2 ) Total occurrence
Taxa nueber (X) X SD
Nematoda 157 1000 134800 69524 Turbellaria 9 400 7727 13696 tlHl~lk ~2~~iQH 1 100 859 2715 Oligochaeta 49 1000 42071 32745 ~~iQQysect~gl~ S[l9sect bHbQghQb~~ Yirl~
10 1
400 100
8586 859
12799 2715
tQ[Qpoundls l2lilUsect bilQHSbg[ sp ~QrQQbil nllQisectHarpacticoida
4 7
134 1
400 500
1000 100
3434 6010
115052 859
4434 7069
44742 271 5
sectpoundQUQlls poundsQgn~sect Chironomid larvae
1 1
100 100
859 859
271 5 2715
Hydracarina 1 100 859 2715
Hean number of organismssample 376 Standard deviation 132
M b f 2ean num er 0 organIsms m 322834 Standard deviation 113127
H= 202 SD= 068 SR= 1 40 J= 055
A-21
STATION 45 Date 18 June 1984 Depth 67 m Salinity (bottom) 01 ppt Temperature (bottom) 149 C No of samples 10
Frequency Density (nom2)
Taxa Total nUllber
occurrence ex) i SD
Nematoda 109 1000 93587 3891 7 Turbell ari a 3 200 2576 5795 ~g~tbg limoipoundQl Q~Qni2 fQ(i~2 Oligochaeta ~gigQ~~Y inl[ggi ~Q[QiSY2 moilo Ostracoda
3 2
194 44
7 3
200 200
1000 1000 200 200
2576 171 7
16656B 37778 6010 2576
5795 3620
118364 36020 12831 5795
bimoQampl~n~[2 sp ~Q[QQbiYm lmgoi Harpacticoida sectpoundQQ1202 pound2022Osect Chironomid larvae
68 1 1
113 2
900 100 100
1000 200
58385 859 859
97022 171 7
97627 2715 2715
73976 3620
Mean number of organismssa_pie 550 Standard deviation 371
Mean nUll ber 0 f organIsms 2II 472230 Standard deviation 318519
H= 242 SD= 077 SR= 1 32 Ja 065
A-22
STATION 18 Date 18 June 1984 Depth 34 m Salinity (bottom) 00 ppt Temperature (bottom) 155 C No of samples 10
Frequency Density (nom 2) Total occurrence ----------------shy
Taxa nUlber (Z) X SD
Neutoda 291 1000 249853 138826 Turbellaria 1 100 859 2715 ~~n~~nki~ sectQ~~iQ~2 ~g~ntbg2 limni~Q9 Oligochaeta
1 3
123
100 300
1000
859 2576
105608
271 5 4147
48240 ~~igQY~~~~9 int~(mgii ~Q[~i~~~ mini~ni bimnQ~ylbg(~ Spa
67 6 5
1000 500 400
57526 5152 4293
40485 6003 6071
~Q(QebiYm ~imQnisect Harpacticoida
80 2
1000 200
68688 171 7
41276 3620
sect~QttQini ~2nig~n~i Chironomid larvae
2 4
200 300
171 7 3434
3620 6003
Mean number of organismssample 585 Standard deviation 194
I 2Mean urn b er 0 f organIsms m 502281 Standard deviation 166943
H= 203 SD= 068 SR= 1 20 J= 057
A-23
STATI ON 58 Date 18 June 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (noI 2) Total occurrence
TaKa number (X) X SD
Nellertea 2 100 1717 5430 Nematoda 160 1000 137376 6361 1 Turbellaria 4 400 3434 4434 Oligochaeta 36 1000 3091 0 14705 ~iQQYik~ Q1rQ 4 300 3434 6003 bitnQgl~ebysect YrDsect ~Q[QiY~ ~~nni biQQpoundY1h[ sp ~Q[Qeng ~ilQD Chironomid larvae
3 1 3
61 1
300 100 300
1000 100
2576 859
2576 52375
859
4147 2715 4147
1428 1 2715
Chironollid pupae 1 100 859 271 5
Mean number of organismssample 276 standard deviation 72
nean nurn b er 0 f organIsms I 2 236974 Standard deviation 61410
H = 1 78 SD= 060 SR= 1 23 J= 051
A-24
STATION 55 Date 18 June 1984 Depth 18 m Salinity (bottom)1 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (no 1m2) occurrence
Taxa (X) X SD
Nematoda 160 1000 137376 43967 Turbellaria 1 100 859 271 5 Oligochaeta 61 1000 52375 31985 ~~iQQY~kY~~ int~[mQi~ ~Q[Qipound~l~ m~nini~ biIDnQ~Ylb[s sp
3 3 3
300 300 300
2576 2576 2576
4147 4147 4147
~Q[Q~bi~ ~slIDQni~ Chironomid larvae
85 6
1000 600
72981 5152
34165 4434
Mean number of organismssample 322 Standard deviation 75
2Mean number 0 f organIsms m 276469 Standard deviation 64099
H= 178 5D= 065 SR= 0B4 J= 059
A-25
Frequency Density (no2) occurrence -----------------
Taxa (7) X SD
Nematoda 104 1000 89294 47409 Turbell ar i a 1 100 859 2715 ~~~nQ~sect imni~Q~ tjQQsectQlis flQig~ Oligochaeta
2 1
297
100 100
1000
171 7 859
255004
5430 271 5
146273 ~~i~QYsect~Y~lls ilr2is gQrQi~y~ IDDilDia
24 4
600 300
20606 3434
27212 6003
Ostracoda 2 200 171 7 3620 biDQSy~b~C~ sp M~QYsectisect m~r~~Qi ~QrQeniy QD Harpacticoida
157 1 1 1
900 100 100 100
134800 859 859 859
73197 2715 2715 2715
sectpoundQttQDs SsDQD 113 900 97022 61656
STATION 45 Date 2 July 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) No of samples 10
172 C
Mean number of organismssample 708 Standard deviation 339
M ean num b er f 20 organisms 607889 Standard deviation 290B22
H= 216 SD= 073 SR= 1 27 J= 058
1-26
STATION 18 Date 2 July 1984 Depth 24 WI
Sal inity (bottom) 00 ppt Temperature (bottom) 172 C No of samples 10
--------------------------------~-----------------------------------------Frequency Density (nom2)
Total occurrence Taxa number (7) X SD
Nematoda 202 1000 173437 113532 ~~~nih~sect mnpoundQ~ Oligochleta
4 102
400 1000
3434 87577
4434 54873
~~igQYsect~Y~12 inl~rmgi2 ~Q[~poundYl~ m~ni~nsectisect bimnQpoundylh~[~ Spa
115 4
15
900 300 900
98739 3434
12879
100720 6003 9274
~Q[QQniY~ sect~QDi~ 55 900 47223 40525 Harpacticoida 1 100 859 2715 sectpoundQiiQlD SDg~DEisect Chironomid larvae
2 6
200 400
1717 5152
3620 7240
Hymenoptera 1 100 859 2715 Hydracarina 1 100 859 2715
Mean number of organismssample 508 Standard deviation 253
2Mean num ber 0 f organIsms m 436169 Standard deviation 217580
H= 225 SD= 074 SR= 1 22 J= 063
A-27
STATION 58 Date 2 July 1984 Depth 58 1
Salinity (bottom) 00 ppt Temperature (bottom) IBO C No of samples 10
Frequency Density (no2) Total occurrence
Taxa number ltX) i SD
Nematoda 151 1000 129649 42729 Turbellaria 1 100 859 2715 01 i gochaeta 41 1000 35203 22698 ~~i~e~~~ int~~m~~ 3 200 2576 5795 btbQglYRhY~ Yir~n~ ~e~~ampy mni~niii bimQeamp~tb~ sp ~e~eQhiY ~mQni Chironomid larvae
1 4 2
68 1
100 300 200
1000 100
859 3434 171 7
58385 859
271 5 6003 3620
1557 1 2715
Mean number of organisassample 272 Standard deviation
I 2Mean num ber 0 f organIsms I 233539 Standard deviation 62546
H = 1 69 SD= 061 SR= 099 J= 053
A-28
73
STATION 55 Date 2 July 1984 Depth 15 III
Salinity (bottom) 00 ppt Temperature (bottom) 182 C No of samples 10
Frequency Density (nom2) occurrence
Taxa (X) X SD
Nematoda 184 1()00 157982 5264B Turbellaria 1 100 859 271 5 Oligochaeta ~~iQQ~sect~Y~ll~ n~[~~Qi~ bitnggYQDYsect Yi[~nsect ~QrQipoundM2 m2ni~nsectisect bimnQpoundYn~[2 sp ~QrQQhiM Qni Harpacticoida
91 2 1 B 2
96 2
1000 200 100 500 200
1000 200
78133 171 7 859
6869 171 7
82426 1111
26058 3620 271 5 1890 3620shy
25980 3620
ChirDnomid larvae 5 400 4293 6071 Chironolllid pupae 1 100 859 2715
Mean number of organismssample 393 Standard deviation 53
2t1ean nUllber Df organlsms III 337430 Standard deviatiDn 45080
H= 187 SD= 067 SR= 116 J= 054
A-29
STATION 45 Date 17 Jul y 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (X) X SD
Nematoda 215 1000 184599 45837 ~~n~b~~ imDipoundQ Qe~Qni fllHi2
3 1
300 100
2576 859
4147 2715
Oligochaeta 305 1000 261873 147955 ~~iQQY~k~ in~rm~2i ~Qr~ipoundYl IDniln~i~ Ostracoda
17 1 2
500 100 200
14590 859
171 7
22554 2715 3620
bmnQpound~ihr sp ~QCQQhiY ~lQD~
176 1
1000 100
151114 859
57125 2715
Harpacticoida 4 300 3434 6003 sectQ~~Qn poundnQnai~ Chironomid larvae
91 5
1000 400
78133 4293
61310 6071
Mean number of organismssample 821 Standard deviation 275
M b f 2ean num er 0 organlsms m 70491 1 Standard deviation 236369
H= 215 SD= 073 SR= 114 J= 060
A-30
STATION 18 Date 17 Jul y 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom 203 C No of samples 10
Frequency Density (001 2 Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 339 1000 291065 119140 Turbellaria 3 200 2576 5795 ~~2~b~~ limnipoundQ12Oligochaeta
4 18S
300 1000
3434 161417
6003 89393
~~iQQy~~~ls in~(ID~Qi bim~Qampy~bg(2 Spa
34 16
800 700
29192 1373B
22967 15252
~g(gebi~m ~21mQni2 Harpacticoida
52 3
1000 200
44647 2576
25212 5795
2ampQ11Q1202 ampS02Qg~2i2 Chironomid larvae
18 10
700 700
15455 8586
13904 701 0
Mean number of organi$mssample 667 Standard deviation IBB
H ean nurn b er 1 20 f organIsms m 572686 Standard deviation 161750
H = 1 99 SD= 065 SR= 090 J= 060
A-31
STATION 58 Date 17 July 1984 Depth 55 AI
Salinity (bottom) 00 ppt Temperature (bottom) 197 C No of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nellatoda 173 1000 14853B 66390 Turbellaria 1 100 859 271 5 ~~~n~hu ini~QA Oligochaeta
1 46
100 1000
859 39496
2715 26293
~gipoundQy~~ygl2 in~rJg~i~ b1nQglYRnY~ Yi( Bivalvia
6 2 1
400 200 100
5152 1717 859
8295 3620 271 5
ei~ IDnH~n~i~ 2 200 171 7 3620 Ostracoda 1 100 959 271 5 biIDQHlh~( Spa ~Q(QRbim ~21Qnisect Diptera pupae
1 94
1
100 1000 100
859 80708
859
2715 35332 2715
Heleidae 1arvae 5 500 4293 4525 Chironomid larvae 1 100 859 2715
Mean number of organismssample 335 Standard deviatiDn 113
Mean number of organismsRI2 287631 Standard deviation 97413
H= 1 86 SO= 064 SR= 155 J= 049
A-32
STATION 55 Date 17 July 1984 Depth 18 m Sali nity (bottom) 00 ppt TeAlperature (bottom) 199 C No of samples 10
Frequency Density (nom2 ) occurrence
Taxa (X) x S D
Nematoda 61 1000 52375 33972 Turbellaria 1 100 859 2715 Oligochaeta 24 900 20606 11590 ~~i2QY~k~~1 iOi[2 bimDQ~xlb~r sp ~Q[QQhi~ sectgni~ Chironomid larvae
3 1
38 3
200 100
1000 300
2576 859
32627 2576
5795 2715
19326 4147
Mean number of organismssample 131 standard deviation 54
M b f 2ean num er 0 organIsms 112477 Standard deviation 46757
H= 184 SD= 066 SR= 085 J= 065
bull
A-33
STATION 45 Date 1 August 1984 Depth 58 m Sal i nity (bottoll) 03 ppt Temperature (bottom) 203 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa nUllber (X) X SD
Nematoda 145 1000 124417 52344 Turbellaria 1 100 859 2715 Mmth~sect iHpoundQ~ Q~~Qi ilQ[i9Oligochaeta
5 3
196
500 300
1000
4293 2576
168286
4525 4147
91064 ~igQYsect~~li int9i Ostracoda
2 3
100 300
171 7 2576
5430 4147
bimnQpoundtl sp ~Q[Q2hiY sectlQni~
240 6
1000 600
206064 5152
73526 4434
sectpoundQtQl poundngnai~Helei dae larvae
1862 1
1000 100
1598713 859
966134 271 ~
Mean number of organismssample 2464 Standard deviation 1156
211 ean num ber 0 f organIsms II 2115590 Standard deviation 992518
H= 124 SD= 041 SR= 089 J= 036
A-34
STATION 1S Date 1 August 1984 Depth 24 II
Salinity (bottom) 00 ppt Temperature (bottom) 198 C No of samp I es 10
Frequency Density (nom2) occurrence ---------------- shy
Taxa (X) X S D
Nuertea 1 100 859 2715 Nellatolllorpha 1 100 859 2715 Nematoda 248 1000 212933 108288 Turbellaria 4 400 3434 4434 ~untb~la Hli~g Oligochaeta
4 206
400 1000
3434 176872
4434 75309
~~igQYli~dli i[t~(gi~ ~QtQpound l binQ~ybt2 sp ~2l~bi Q[i ~2tlgtQ(ila tirisect sectpoundQtel poundl9lla Chironomid larvae
10 1
20 205
1 574
9
500 100 800
1000 100
1000 400
8586 859
17172 176013
859 492836
7727
10709 271 5
14021 48104
271 5 150531
13696
Mean number of organismssample 1284 Standard deviation 290
M b f I 2ean nurn er 0 organIsms III 1102442 Standard deviation 2488B5
H= 211 SD= 071 SR= 1 16 J= 057
A-35
STATION 58 Date 1 August 1984 Depth 55 m Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samp 1es 10
Frequency Densi ty _ ltnom2 ) Total occurrence
Taxa number (7) X SD
Nemertea 1 100 859 2715 Nematoda 22 900 18889 15036 Turbellaria 1 100 859 2715 Oligochaeta 19 700 16313 17385 biiQQgl~QhY~ YiCg~~ 2 200 171 7 3620 ~Q[~i~~l~ m2nil~n2i2 ~Q[QehiYm ~lmQni2
4 164
300 1000
3434 140810
6003 103048
Heleidae larvae 8 500 6869 8868
Mean number of organismssample 221 Standard deviation 111
I 2Mean num ber 0 f organIsms m 189751 Standard deviation 95391
H = L 37 SD= 043 SR= 090 J= 046
A-36
STATION 55 Date 1 August 1984 Depth 15 m Salinity (bottoll) 01 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (i ) X SD
Nemertea 1 100 859 2715 Neutoda 122 1000 104749 7394B Turbellaria 4 300 3434 6003 ~~~~~nt~ secte~poundQa~ Oligochaeta
1 118
100 1000
859 101315
2715 61223
~giQgY~k~~l iot~[m~Qi btbQg~2b~ Y[O ~grQipound~ ~nl~ni b~ngpound~tb~[ Spa
3 1 5 1
200 100 500 100
2576 859
4293 859
5795 2715 4525 2715
~Q[QebiYm ~mQoi sect~QttQ~ ~OQOi Heleidae larvae
42 2 2
800 200 100
36061 171 7 171 7
21341 3620 5430
Chironomid larvae 4 400 3434 4434
Mean number of organismssapIe 306 Standard deviation 169
M b f I 2ean nurn er 0 organIsms m 262732 Standard deviation 145101
H = 198 SD= 067 SR= 1 45 J= 054
A-37
~-- --------------~~-------------
STATION 45 Date 17 August 1984 Depth 61 1
Salinity (bottom) 10 ppt Temperature (bottom) 210 C No of samp 1es 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nematoda 240 1000 206064 130213 ~~h~sect limQ tjQ~~Hi~ fQ[i~~ Oligochaeta
31 2
245
400 100
1000
26617 1717
210357
75228 5430
121374 babgglYQbl~ Yi[~sect 1 100 859 2715 Ostracoda 1 100 859 271 5 biQ~xtb~[ Spa ~~Q~~isect ~[pound~Qisect ~Qgebi HQOi
333 2
143
1000 200
1000
28591 4 171 7
1227BO
106553 3620
106860 sectpoundQUg~ poundg~nsectisect 1738 1000 1492247 68441 7
Mean number of organismssample 2736 Standard deviation 944
M b f I 2ean num er 0 organlslls m 2349130 Standard deviation 810600
H= 172 SD= 056 SR= 079 J= 052
A-38
STATION 18 Date 17 August 1984 Depth 27 III
Sal i ni ty (botto) 01 ppt Temperature (bottom) 214 C No of samples 10
Frequency Density (nom 2 ) occurrence
Taxa (X) X SD
Nematoda 186 1000 159700 62468 ~tgt SPa 2 100 171 7 5430 Turbellaria 8 400 6869 8868 ~~ntbg2 imnipoundQ 12 700 10303 11304 Oligochaeta 283 1000 242984 90509 ~~iQQY~~Y~lls inlgtmggisBivalvia
4 1
400 100
3434 859
4434 271 5
~Qt~i~Y nilnsectisectbimnQpoundttbg[s SPa ~QtQQbi~ islmQDi2
1 17
286
100 900
1000
859 14596
245560
271 5 10747 83461
sectpoundetteln poundDsggnsectisect Chironomid larvae
526 4
1000 3Q0
451624 3434
179610 6003
Mean number of organismssapIe 1330 Standard deviation 162
Mean nurn ber I 20 f organIsms m 1141938 Standard deviation 139389
H= 214 SD= 073 SR= 1 06 J= 060
A-39
STATION 58 Date 17 August 1984 Depth 55 II
Salinity (bottom) 01 ppt Temperature (bottom) 220 C ND of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (7) x S D
Nematoda 68 1000 58385 27689 Turbellar i a 4 200 3434 8295 Oligochaeta 19 800 16313 13084 ~~i~Q~k~~l~ in~~[m~i bitUQ9Y2bYa Yi[~na Bivalvia
3 3 4
300 300 300
2576 2576 3434
4147 4147 6003
gQ[QipoundYl~ mnilDa 1 100 859 2715 binQpoundY~[ sp gQ[Q2UY a~mgnia sect~Qtgl~n ~n~~ni
2 338
6
100 1000 400
171 7 290207
5152
5430 56636 7240
Mean number of organismssample 448 Standard deviation 72
W b f 2lean num er 0 organlsms II 384653 Standard deviation 61988
H = 1 27 SD= 041 SR= 1 02 J= 038
A-40
STATION 55 Date 17 August 1984 Depth 18 m Salinity (bottom) 00 ppt Temperature (bottol) 223 C No of samples 10
Frequency Density (nom 2 ) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 291 1000 249853 118104 Turbellaria 1 100 859 2715 M~ntb~ mni~Q Oligochaeta
1 47
100 1000
859 40354
2715 28347
~~iQQ~sectkY~ll int~[m~gi bitbQQ1YSDY Yi(gn Bivalvia
25 12
6
900 500 400
21465 10303 5152
1231 0 18459 7240
~Q~2ipoundY mnil~ni Ostracoda
11 8
400 600
9445 6869
12442 6773
bmnQpoundYb~r~ SPa 52 1000 44647 19746 ~QrQsbY lmgnisectsQiielo snQ~ni~ Chironomid larvae
43 5
15
1000 400 BOO
36920 4293
12879
21436 6071 8344
Mean number of organismssample 517 Standard deviation 174
M b f I 2ean num er 0 organlsms m 443896 Standard deviation 149431
W = 228 SD= 065 SR= 1 33 J= 062
A-41
STATION 45 Date 29 August 1984 Depth 55 III
Salinity (bottom) 07 ppt Temperature (bottom) 199 C No of samples 10
Frequency Density (noI 2) Total occurrence
Taxa number (X) X SD
Nematoda 192 1000 164851 98380 ~sntbsect limnipoundQlDligochaeta
2 198
200 1000
171 7 170003
3620 67339
~Q[eipoundYls msniln~isect Ostracoda
1 4
100 400
859 3434
2715 4434
bimnQpoundytb[s Spa gQ[Qeniy sect21QOi~ sectpoundQttQlsO poundsOsggOi
164 87
2468
1000 1000 1000
140810 74698
2119025
39283 39460
840890
Mean number of organismssample 311 6 Standard deviation 101 1
ill b f 2nean nUll er 0 organIsms 2675398 Standard deviation 8682B8
W= 116 SD= 036 SR= 060 J= 039
A-42
STATION 18 Date 29 August 1984 Depth 30 bull Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samples 10
Total Frequency occurrence
Densi ty 2
(nom )
Taxa number (~ ) x S D
Nematoda 150 1000 128790 28905 Turbellaria 7 400 6010 9096 ~nh imni~Qj Oligochaeta ~~i~2Y~k~~1 ini~CIDgii bih2g~Qb~ Yi(~U2 Bivalvi a
B 145
1 1 2
600 1000
100 100 200
6869 124497
859 859
171 7
677 3 84732
271S 2715 3620
~Q[Qi~yli miDllgni bimn2pound~ih~C sp ~QtQehiY imQUia Harpacticoida
7 7
265 1
500 300
1000 100
6010 601 0
227529 859
8145 10747
139462 2715
sect~QtiQDi ~Q~Q~i~ Chironomid larvae
2471 2
1000 200
2121601 171 7
1063112 3620
Mean number of organismssample 3067 Standard deviation 121 9
2Mean number 0 f organIsms m 2633326 standard deviation 1046718
H = 1 09 SD= 034 SR= 1 04 J= 029
A-43
STATION 58 Date 29 August 1984 Depth 55 111
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (noI 2 ) Total occurrence -----------------
Taxa nUllber (X) X SD
Nemertea 4 400 3434 4434 Nuatoda 64 1000 54950 25016 Turbellaria 9 400 7727 11047 ~Hl~b limli~Q19 Oligochaeta
1 37
100 1000
859 31769
2715 19006
i~Qyh il(~~ bHtlQSlheln Yl Bivalvia
4 4
20
200 300 400
3434 3434
17172
8215 6003
26541 ~e(ijY l bQ~dlH sp
26 1
700 100
22324 859
25662 2715
~Q[QQhil iQ sectjgUell HD Heleidae larvae
418 20
1
1000 800 100
358895 17172
859
129443 12799 271 5
Mean number of organismssample 609 Standard deviation 175
nean num b er 0 f organIsms 1 111 2 522887 Standard deviation 150164
H= 176 SD= 051 SR= 1 30 J= 047
A-44
I I
I
I
STATION SS
Date 29 August 1984 Depth 21 1
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (no2) Total occurrence
Taxa nUllber (X) x S D
Nematoda ISO 1000 128790 37969 Turbellaria 1 100 859 271 5 Oligochaeta 48 1000 41213 16088 ~i~g~sect~~l iQ~~mgi bi~QQg~gb~sect ~i~nsect
10 14
600 600
eSB6 12020
9050 14137
Bivalvia 4 200 3434 7240 ~Q[Q~Yl niQaa Ostracoda
15 7
700 SOO
12879 6010
15806 7069
bmQg~~~b~ SPa 14 800 12020 8295 ~g[gaby mgni sect~g~~Qn ~ngnai Chironomid larvae
IB4 25 9
1000 900 700
157982 21465
7727
35563 16810 6335shy
Mean number of organismssample 481 Standard deviation B6
2Mean number 0 f organlsms m 412987 Standard deviation 74131
H= 24S SD= 074 SR= 1 23 J= 068
A-45
STATION 45 Date 14 September 1984 Depth 61 11
Salinity (bottom) 03 ppt Temperature (bottom) IB4 C No of samples 10
---------------------------------~----------------------------------------
Taxa TotalnUlllDer
Frequency occ~~~ence
Density (no 2) -----X-------sect7B
Nematoda 189 1000 162275 85233 t1tQ SPa
Turbellaria 2 2
200 100
171 7 171 7
3620 5430
~~~nIng limoifQl t1QQQDi~ flQriQ Oligochaeta
5 19
142
400 800
1000
4293 1631 3
121921
6071 12442 30504
~QQifYl mDl~D bimoQpoundt1hgr Spa Cumacea
19 184
2
800 1000 200
1631 3 157982
171 7
130B4 69541 3620
~Q[QnniYm ~~lmQDi Harpacticoida
118 1
1000 100
10131 5 B59
43367 2715
sectfQIIQD fOQgO Chironomid larvae
1780 1
1000 100
1528308 859
673586 2715
Mean number of organismssample 2464 Standard deviation 874
M ean num b er f 20 organlsms 2115590 Standard deviation 750305
H= 151 SD= 046 SR= 1 07 J= 041
A-46
STATION 18 Date 14 September 1984 Depth 21 III
Salinity (bottom) 01 ppt Temperature (botto) 182 C No of samples 10
Frequency DenSity (nom 2 ) Total occurrence ---------------- shy
Taxa nUlDber (i) X SD
Nemertea 1 100 859 271 5 Nematoda 186 1000 159700 44925 Turbellaria 16 400 13738 20717 ~~Dth~~ limni~Ql Oligochaeta
13 55
700 900
11162 47223
9096 30085
~Q~ei~Yl nil~Qi~ 17 900 14596 7069 bimDg~lbg[ Spa b 500 5152 6003 ~Q[Q2niY ~lgQi~ Harpacti coi da
562 2
1000 200
482533 171 7
136766 3620
sectpoundQttQ~Q~ ~n~ni 791 1000 679153 324290
Mean number of organismssample 1649 Standard deviation 447
I 211ean nUll ber 0 f organIsms I 1415831 Standard deviation 384136
H= 179 SD= 064 SR= 084 J= 054
A-47
STATION 58 Date 14 September 1984 Depth 58 III
Salinity (bottom) 01 ppt Temperature (bottom) 191 C No of sampl es 10
-------------------------------------------~------------------------------Frequency Density (nom 2 )
Total occurrence Taxa number eX) X SD
Nemertea 1 100 859 2715 Nematoda 55 1000 47223 18658 Turbellaria 10 500 8586 11448
1 100 859 2715 Oligochaeta 41 1000 35203 17850 ~~iQQ~~gll iu1g[m~i ~Q[Q~Yl nilD bimnQ~Y~h[ Spa ~Q[Q~hiYm lmgui sectpoundQilg1D poundU2D Chironomid larvae
4 10
2 277
23 4
100 500 200
1000 700 300
3434 8586 171 7
237832 19748 3434
10861 11448 3620
50561 21051 6003
Mean number of organismssample 428 Standard deviation 51
M b f 2ean num er 0 organIsms III 367481 Standard deviation 43743
H= 179 SD= 055 SR= 114 J= 052
A-48
I I
STATION SS Date 14 September 1984 Depth 21 II
Salinity (bottom) 01 ppt Temperature (bottom) 190 C No of samples 10
--------------------------------------------------------------------~-----
Frequency Density (no1I2) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 102 1000 87577 39200 Oligochaeta 34 700 29192 31142 ~iQ2Y~y1 int(mgi~ bithQgl~en~ Yi(gDsect ~Q(~i~Y m~DilgDsecti~ bimDQamp~1h(sect sp ~2(QQhiY slmQD 2poundQiiQlsD ~sD~g~nsecti Chironomid larvae
36 18 16 17
100 16
3
1000 600 800 700
1000 800 300
30910 15455 13738 14596 85860 13738 2576
157BO 20953 10078 14621 32126 10861 4147
Mean number of organismssample 342 Standard deviation 97
2Mean nUllber 0 f organlsms m 293641 Standard deviation 83617
H= 262 SD= 079 SR= 095 J= 083
A-49
Appendix B--Sediment particle size and organic content of the Cathlamet Bay
benthic invertebrate sites 13 March through 14 September
1984
iii
1
Station 18a 48 54 57
Survey 1 1 1 1
Month March March March March
Day 13 13 13 13
Particle size (mm) Phib Percent by weight
gt 40 -2 000 000 000
20- 40 -1 000 000 000
10- 20 0 000 009 000
05- 10 1 018 1079 032
025- 050 2 545 7583 2468
0125- 025 3 8731 1225 6783
00625-0125 4 491 037 657
lt0625 (5-12) 216 067 060
Organic Content 160 116 128
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
b Phi= -log2(sediment particle diameter in mm)
B-1
Station 18a 48 54 57
Survey 2 2 2 2
Month April April April April
Day 5 5 5 5
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 003 093 000
05shy 10 1 005 31 75 023
025shy 050 2 087 5904 2368
0125- 025 3 6316 750 7155
00625-0125 4 3056 026 427
lt0625 (5-12) 533 052 028
Organic Content 081 077 065
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-2
Station 45 55 58
Survey 3 3 3 3
Month April April April April
Day 18 18 18 18
Particle size (mm)
gt 40
Phi
-2
Percent by weight
000 000 000
20shy 40 -1 000 000 000
10shy 20 0 005 009 004
05shy 10 1 010 027 013
025shy 050 2 015 095 225
0125- 025 3 097 536 6111
00625-0125 4 453 2821 2205
lt0625 (5-12) 9420 6511 1442
Organic Content 31 42 14
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-3
Station 18a 45 55 58
Survey 4 4 4 4
Month May May May May
Day 4 4 4 4
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 021
05shy 10 1 000 065 063
025shy 050 2 012 370 230
0125- 025 3 091 4099 4696
00625-0125 4 322 3650 3052
lt0625 (5-12) 9575 1810 1939
Organic Content 330 180 160
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-4
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
5
May
17
000
000
005
016
217
5862
2729
1170
100
45 55 58
5 5 5
May May May
17 17 17
Percent by weight
000 000
000 000
005 008
113 031
325 274
1903 5613
2784 2401
4870 1672
240 110
000
000
000
010
020
079
397
9494
390
B-5
Station 18al 45 55 58
Survey 6 6 6 6
Month June June June June
Day 6 6 6 6
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 020
05shy 10 1 005 051 027
025shy 050 2 005 301 1 79
0125- 025 3 074 3189 5404
00625-0125 4 599 4118 2885
lt0625 (5-12) 9317 2332 1485
Organic Content 340 240 150
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-6
Station
Survey
Month
Day
Particle size Cmm) Phi
gt 40 -2
20shy 40 -1
10shy 20 a
05shy 10 1
025shy 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
7
June
18
000
000
005
029
138
3917
4143
1768
180
45
7
June
18
55 58
7 7
June June
18 18
Percent by weight
000
000
000
010
020
080
427
9464
310
000 000
000 000
000 007
011 022
057 190
957 5286
3023 2642
5957 1853
1 70 110
B-7
Station 18al 45 55 58
Survey 8 8 8 8
Month July July July July
Day 2 2 2 2
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 006 002 006
05shy 10 1 006 0l3 023
025shy 050 2 017 088 171
0125- 025 3 074 2712 5365
00625-0125 4 552 3892 3081
lt0625 (5-12) 9345 3294 l354
Organic Content 410 210 160
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-8
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
9
July
17
000
000
003
013
130
4294
4434
1127
130
45
9
July
17
Percent
000
000
000
006
012
051
046
9885
290
55
9
July
17
by weight
000
000
019
048
091
628
3616
5597
030
58
9
July
17
000
000
004
022
158
5017
3148
1650
140
B-9
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18al
10
August
1
45
10
August
1
55
10
August
1
58
10
August
1
Percent by weight
000 000
000 004
001 004
009 018
018 088
098 306
049 2510
9824 7070
000
005
045
763
3604
4495
932
156
100 190 060
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-10
Station 18 45 55 58
Survey 11 11 11 11
Month August August August August
Day 17 17 17 17
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000 000
20- 40 -1 005 000 000 000
10- 20 0 021 003 000 210
05- 10 1 064 009 000 159
025- 050 2 226 027 045 2656
0125- 025 3 3259 131 712 3719
00625-0125 4 4327 195 1737 1159
lt0625 (5-12) 2098 9635 7506 2097
Organic Content 210 300 160 100
Ii I
B-11
Station
Survey
Month
Day
Particle size (mm) Phi
gt40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
12
August
29
000
000
012
046
186
3465
4498
17 93
241
45
12
August
29
55 58
12 12
August August
29 29
Percent by weight
000
000
002
009
026
118
189
9656
540
000 000
000 000
003 011
011 028
055 1013
859 5033
1596 1827
7476 2089
1 70 120
B-12
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
_-------------------- shy
B-13
STATION 58 Date 18 April 1984 Depth 67 m Salinity (bottom) 00 ppt Temperature (botto) No of samples 15
Frequency Density (nom2) Total occurrence
Taxa number (~) X SD
Nemertea 62 933 35489 26338 Nematoda 224 1000 128218 49903 Turbellaria 9 600 5152 4354 ~nt~sect imni~Q Oligochaeta
1 79
67 1000
572 45220
2217 23506
bnQgYRhY~ Yi~~nE ~Q(~i~Y nil~ni Ostracoda
2 10 19
67 533 600
1145 5724
10876
4434 6214
10989 ~Q[QeniY sectQOiHarpacticoida
30 2
B67 133
17172 1145
12142 3021
Heleidae larvae 6 333 3434 5430 Chironomid larvae 9 400 5152 7B1 5 Chironomid pupae 2 133 1145 3021
Mean number of organismssample 303 Standard deviation 94
I 11 ean num ber 0 f organlsms 2 260442 Standard deviation 81043
H= 233 SO= 070 SR= 1 36 J= 063
97 C
A-B
Frequency Density (nolm 2) Total occurrence -----------------
Taxa number (7) X SD
Nemertea 16 467 9158 10989 Nematoda 266 1000 152258 54541 Turbellaria 23 600 13165 15518 ~l~nH ~Q~iQH 2 133 1145 3021 Oligochaeta 181 1000 103604 56532 bi~hQg~Qn~~ ~it~l~ ~QtQifg mli~lsectisectOstracoda
3 59 15
200 1000 733
1717 33772 8586
3555 23054
7256 ~Q[QQhiY HmQtlsect ~Q[QehiYm sect21tlfQ[lg EQlQQQt~i hQ~i
466 3 1
1000 200 67
266738 171 7 572
75094 3555 221 7
Harpacticoida 30 400 17172 40402 Chironomid larvae 10 533 5724 6214
Mean number of organismssa_pIe 717 Standard deviation 143
I 2Mean number 0 f organlsms m 615330 Standard deviation 122532
H= 226 SO= 072 SR= 119 J= 061
STATION 55 Date 18 April 1984 Depth 30 1ft
Salinity (bottom) 00 ppt Temperature (bottom) 93 C No of SaIIples 15
A-9
STATION 45 Date 4 Hay 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 103 C No of samples 10
Frequency Density (noI2) Total occurrence ---------------- shy
Taxa number (Xl X SD
Neutoda 269 1000 230963 167296 Turbellaria 1 100 859 2715 ~u~yuti Q~iQ ~Ub imni~Q
1 2
100 100
859 171 7
2715 5430
j2~Qn flec Oligochaeta
28 169
BOO 1000
24041 145103
19326 74351
~igeYk~ll iulCIDai ~Q(Qi~Y uini Ostracoda
32 4 5
aoo 400
400
27475 3434 4293
22463 4434 6071
biQQ~~tbt sp ~e(QQbYm mQoi sectampQeD ~nQDisect Chironomid larvae
25 2
578 2
900 200
1000 200
21465 1717
496271 171 7
15279 3620
293820 3620
Mean number of organismssample 111 8 Standard deviation 522
11 b f I 2ean num er 0 organIsms m 95991 5 Standard deviation 447842
H= 193 SD= 065 SR= 118 J= 052
A-10
STATION 18 Date 4 Hay 1984 Depth 34 II
Salinity (bottom) 00 ppt Temperature (bottom) 104 C No of saMples 10
Frequency Density (noI 2 ) occurrence ----------------shy
Taxa (X) X SD
Nemertea 10 600 8SB6 10709 Nuatoda 153 1000 131366 47899 Turbellaria 8 600 6869 6773 ~n1b limnpoundQl Oligochaeta
11 147
700 1000
middot9445 126214
9449 6231 7
~i~g~kXl in1(m~i ~g(2iY OiOi Ostracoda
86 4 1
900 300 100
73840 3434 859
61543 6003 2715
bimoQpoundx1b( sp ~2(QQbiYm mgoiDi ptera adult
3 57
3
300 900 300
2576 48940
2576
4147 21815 4147
Chironomid larvae 4 300 3434 6003 Chironomid pupae 1 100 859 2715
Hean nUMber of orQanismssample 489 Standard deviation 160
b f 2nean nUll er 0 organIsms II 418997 Standard deviation 137721
H= 243 SD= 076 SR= 1 34 J= 066
A-l1
STATION 5B Date 4 Hay 1984 Depth 61 bull Salinity (botto~) 00 ppt Temperature (bottom) 110 C No of suples 10
Frequency Density (nom 2) Total occurrence ---------------- shy
Taxa number (X) X SD
Neertn 41 1000 35203 21206 Nematoda 211 1000 181165 53305 Turbellaria 4 200 3434 7240 Oligochaeta 89 1000 76415 32240 ~i~2~~~11~ iU1(~i~bi1begygny YitQ ~e(biYl ~OiDi OstracDda
4 3
20 1
400 200 BOO 100
3434 2576
17172 859
4434 5795
19829 2715
biue~1bt~ sp ~2(egniY Imeoi sectg11g1O OdD Helei dae larvae
5 32
1 1
400 900 100 100
4293 27475
859 859
6071 18010 2715 2715
Chironomid larvae 7 400 6010 9096
Mean number of organismssample 419 Standard deviation 93
b f 2ean nUll er 0 organIsms m 359753 Standard deviation 79875
H= 221 SD= 068 SR= 138 J= 060
A-12
Frequency Density (nolm 2) occurrence -----------------
Taxa (X) X SD
Nemertea 23 900 1974S 15171 Neutollorpha 1 100 859 271 5 Nellatoda 269 1000 230963 69923 Turbellaria 10 600 8586 991 4 ~~xYnki Q~ampiQ 4 300 3434 6003 ~nb limnipoundQl Oligochaeta
1 79
100 1000
859 67829
2715 40363
~i~Q~kXl io[~i biDe9XQDX ~i[~OBi valvi a
11 3 1
800 300 100
9445 2576 859
6335 4147 271 5
~Q[~poundY mnil~n bimoQampXD[ sp ~Q[QabiY lQO Harpacticoida
18 2
159 1
700 200
1000 100
15455 171 7
135659 859
13904 3620
54272 2715
Chironomid larvae 2 200 171 7 3620 Trichoptera larvae 1 100 859 2715
STATION 55 Date 4 May 1984 Depth 21 m Salinity (bottom) 00 ppt Temperature (bottom) 107 C No of suples 10
Mean number of organismssamples 594 Standard deviation 147
Mean number of organismsm2 501422 Standard deviation 126525
H= 219 aD= 069 SR= 1 63 J= 055
A-13
STATION 45 Date 17 May 1984 Depth 61 m Sal i ni ty (bottom) 01 ppt Temperature (bottom) 121 C No of sampl es 10
Frequency Total occurrence
Taxa nUlllber (7)
NelDertea 1 100 859 2715 Nematoda 163 1000 139952 127996 Polychaeta 1 100 859 2715 ~~~n~h~ imni~Qs Hobsonia florida
2 6
200 600
171 7 5152
3620 4434
Oligochaeta 329 1000 282479 13291 8 ~~lQQYsectk~~12 in~~rmQi 57 900 48940 33142 ~Qr~ipound~2 ffi2niDi 6 500 5152 6003 Ostracoda 5 200 4293 10898 bimDg~yth( SPa 13 600 11162 12176 ~Q(Qebi~m sectQDisect Harpacticaida
2 2
200 100
1717 1717
3620 5430
2poundQttQD poundDQDsectisectDiptera adult
296 1
1000 100
254146 859
172633 271 5
Mean number of organismssample 884 Standard deviation 326
b f I 2nean num er 0 organlss m 759002 Standard deviation 280131
H= 209 SD= 071 SR= 1 33 J= 055
A-14
STATION 18 Date 17 May 1984 Depth 30 m Salinity (bottom) 00 ppt Temperature (bottom) 122 C No of samples 12
Frequency Density (nom2) Total occurrence -----------------
Taxa number (X) X SD
Nematoda 50 833 35775 22815 ~ntb limnipoundQl 3 Oligochaeta 97
250 833
2147 69404
3883 48495
~igQ~~k~ intr~ 27 ~QrQipoundY mnin~i~ 5
667 333
19319 3S7S
19068 5740
Ostracoda 1 83 716 2479 bimnQpound~nr sp 5 ~Q(Q~bY ~mQni S4 ~Q(Q~niY ~QinipoundQ(n 3
333 833 250
3578 60102
2147
5740 43780 3883
fgnQ2Q(i bQ~i 1 sectpoundQtgO poundnQn~i 2 Chironomid larvae 4
83 167 250
716 1431 2862
2479 3342 5592
Mean number of organismssample 235 Standard deviation 116
nean nURl b er 0 f organlslls II 2 201771 Standard devi ati on 99221
H= 236 SD= 075 SR= 1 35 J= 066
A-15
STATION 58 Date 17 May 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) 123 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nemertea 2 100 171 7 5430 Nematoda 75 1000 64395 34404 ~~2Qih~a limQi~Q 2 200 171 7 3620 Oligochaeta 60 1000 51516 33376 ~~igQY~~~12 iQ~[~~gi 2 200 171 7 3620 bitQQ9~Bh~sect Yr~Qsect 3 200 2576 579~
gQ[Qi~Yl ID2Dil~nsectisect Ostracoda
6 6
500 400
5152 5152
6003 8295
binQ~~nr[ sp gg[QQOYm mQQsect sect~QttQn 5n2Q~nsectia Chironomid larvae
2 34
1 1
200 1000
100 100
171 7 29192
859 859
3620 12927 271 5 2715
Mean number of organismssample 194 Standard deviation
2Mean nurn ber 0 f organIsms fA 166568 Standard deviation 56259
H= 225 SD= 072 SR= 1 45 J= 063
A-16
66
STATION 55 Date 17 May 1984 Depth 24 II
Salinity (bottom) 00 ppt Telllperature (bottom) 126 C No of samples 10
Total Frequency occurrence
Taxa nUllber (X) X SD --------------------------------------------------------------~-----------
Nematollorpha 2 200 171 7 3620 Nematoda 63 1000 54092 35297 Oligochaeta 94 1000 80708 44004 ~~iQQY~k~~l iQt~(m~Qi bitnQg~Qh~~ Yi[~Q gQ[QipoundY~ mni~Q~i Ostracoda
10 9 4 2
600 800 300 100
8586 7727 3434 171 7
9050 4874 6003 5430
bimnQ~~ln~[e sp ~Q(QQbiYm mQD ~Q[QQbiYm 2inipoundQ[n~ Chironomid larvae
6 142
3 1
600 1000 200 100
5152 121921
2576 859
4434 50682 5795 2715
Mean number of organismssample 336 Standard deviation 62
2Mean num ber 0 f organisms m 288490 Standard deviation 53421
H= 214 SD= 071 SR= 119 J= 062
A-17
STATION 45 Date 1 June 1984 Depth 61 m Salinity (bottom) 01 ppt Temperature (bottom) 139 C No of samples 10
Total Frequency occurrence
Density (no2)
Taxa nUllber (1) X SD
Nematoda 174 900 149396 132347 Turbellaria 5 200 4293 10898 ~~~QiQ~sect tmQtpoundQ~ ~QQsectQ flQi~sect Oligochaeta ~~iQQysecttygl~ iQl~rm~~i2 ~Q[Qi~~l~ ~~DilgDsectisect Ostracoda
5 20
190 103
12 5
400 900
1000 900
60 (I 400
4293 17172
163134 88436 10303 4293
6071 8095
92563 51524 11304 6071
bimnQpoundytng[ sp ~gQmYsectisect IDg[pound~Qisect ~Q[QQhi~m sectlmQDisect sectpoundQtiQlsectQ pound~Qgsectisect ChironQmid larvae
33 1
10 375
2
900 100 700
1000 200
28334 859
8586 321975
171 7
17196 2715 7010
179201 3620
Mean number of organismssample 935 Standard deviation 254
nurn b 0 f 2lean er organlsms m 802791 Standard deviation 218423
H= 239 SD= 075 SR= 1 22 J= 065
A-18
STATION 18 Date 1 June 1984 Depth 30 AI
Salinity (bottom) 00 ppt Temperature (bottom) 134 C No of samples 11
Frequency Density (no 1m2)
Taxa Total number
occurrence (X)
---------------- shyX SD
Turbellaria 14 636 10928 1157 7 ~~~Qltlg~ ilipoundQ~ Oligochaeta
10 178
727 1000
7805 138937
601 6 67913
~~iQQy~tY~l~ ill~[m~Qi~ 122 636 95227 93619 ~Q[Qipound~ l~i~lsectisect Ostracoda
7 1
455 9 1
5464 78 1
6946 2589
billQylhg[ Spa 16 818 12489 10420 GQ[QQQil HQi~ 139 1000 108496 70934 gQ[Qebi secteiifQ[~ sectQiiQi2 ~Q~sectisect Diptera pupae
1 2 1
9 1 182
11 1
781 1561 781
2589 3473 2589
Chironomid larvae 2 182 1561 3473
Mean number of organismssample 714 Standard deviation 284
nean num b er 0 f organlsms m 2 612728 Standard deviation 244249
H= 232 SD= 075 SR= 1 25 J= 063
A-19
STATION 58 Date 1 June 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 138 C No of samples 10
Frequency Density (noI 2 ) Total occurrence
Taxa number (X) X SD
Nematoda 173 1000 148538 47383 Turbellaria 3 300 2576 4147 Oligochaeta 53 1000 45506 32139 ~giQgY2k~g~ ini~[m~Qi~ bQg91YehY2 Yi[~nsect ~Qr~i~Yl m~nl~n~i
26 1
10
600 100 500
22324 859
8586
3391 2 2715
13424 bimnQpound~Q~[ sp ~Q9~m[Y poundgnitYpoundQlysect ~QtQehiYm ~lQni
4 1
46
200 100
1000
3434 859
39496
8295 2715
22243 Chironomid larvae 1 100 859 271 5
Mean number of organismssample 318 standard deviation 103
M b f I 2ean num er 0 organlsms III 273035 Standard deviation 88842
H = 1 99 SD= 065 SR= 1 08 J= 060
A-20
STATION 55 Date 1 June 1984 Depth 27 m Salinity (bottom) 00 ppt Temp era t u r e (b 0 t tom) 140 C No of samples 10
Frequency Density (nom 2 ) Total occurrence
Taxa nueber (X) X SD
Nematoda 157 1000 134800 69524 Turbellaria 9 400 7727 13696 tlHl~lk ~2~~iQH 1 100 859 2715 Oligochaeta 49 1000 42071 32745 ~~iQQysect~gl~ S[l9sect bHbQghQb~~ Yirl~
10 1
400 100
8586 859
12799 2715
tQ[Qpoundls l2lilUsect bilQHSbg[ sp ~QrQQbil nllQisectHarpacticoida
4 7
134 1
400 500
1000 100
3434 6010
115052 859
4434 7069
44742 271 5
sectpoundQUQlls poundsQgn~sect Chironomid larvae
1 1
100 100
859 859
271 5 2715
Hydracarina 1 100 859 2715
Hean number of organismssample 376 Standard deviation 132
M b f 2ean num er 0 organIsms m 322834 Standard deviation 113127
H= 202 SD= 068 SR= 1 40 J= 055
A-21
STATION 45 Date 18 June 1984 Depth 67 m Salinity (bottom) 01 ppt Temperature (bottom) 149 C No of samples 10
Frequency Density (nom2)
Taxa Total nUllber
occurrence ex) i SD
Nematoda 109 1000 93587 3891 7 Turbell ari a 3 200 2576 5795 ~g~tbg limoipoundQl Q~Qni2 fQ(i~2 Oligochaeta ~gigQ~~Y inl[ggi ~Q[QiSY2 moilo Ostracoda
3 2
194 44
7 3
200 200
1000 1000 200 200
2576 171 7
16656B 37778 6010 2576
5795 3620
118364 36020 12831 5795
bimoQampl~n~[2 sp ~Q[QQbiYm lmgoi Harpacticoida sectpoundQQ1202 pound2022Osect Chironomid larvae
68 1 1
113 2
900 100 100
1000 200
58385 859 859
97022 171 7
97627 2715 2715
73976 3620
Mean number of organismssa_pie 550 Standard deviation 371
Mean nUll ber 0 f organIsms 2II 472230 Standard deviation 318519
H= 242 SD= 077 SR= 1 32 Ja 065
A-22
STATION 18 Date 18 June 1984 Depth 34 m Salinity (bottom) 00 ppt Temperature (bottom) 155 C No of samples 10
Frequency Density (nom 2) Total occurrence ----------------shy
Taxa nUlber (Z) X SD
Neutoda 291 1000 249853 138826 Turbellaria 1 100 859 2715 ~~n~~nki~ sectQ~~iQ~2 ~g~ntbg2 limni~Q9 Oligochaeta
1 3
123
100 300
1000
859 2576
105608
271 5 4147
48240 ~~igQY~~~~9 int~(mgii ~Q[~i~~~ mini~ni bimnQ~ylbg(~ Spa
67 6 5
1000 500 400
57526 5152 4293
40485 6003 6071
~Q(QebiYm ~imQnisect Harpacticoida
80 2
1000 200
68688 171 7
41276 3620
sect~QttQini ~2nig~n~i Chironomid larvae
2 4
200 300
171 7 3434
3620 6003
Mean number of organismssample 585 Standard deviation 194
I 2Mean urn b er 0 f organIsms m 502281 Standard deviation 166943
H= 203 SD= 068 SR= 1 20 J= 057
A-23
STATI ON 58 Date 18 June 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (noI 2) Total occurrence
TaKa number (X) X SD
Nellertea 2 100 1717 5430 Nematoda 160 1000 137376 6361 1 Turbellaria 4 400 3434 4434 Oligochaeta 36 1000 3091 0 14705 ~iQQYik~ Q1rQ 4 300 3434 6003 bitnQgl~ebysect YrDsect ~Q[QiY~ ~~nni biQQpoundY1h[ sp ~Q[Qeng ~ilQD Chironomid larvae
3 1 3
61 1
300 100 300
1000 100
2576 859
2576 52375
859
4147 2715 4147
1428 1 2715
Chironollid pupae 1 100 859 271 5
Mean number of organismssample 276 standard deviation 72
nean nurn b er 0 f organIsms I 2 236974 Standard deviation 61410
H = 1 78 SD= 060 SR= 1 23 J= 051
A-24
STATION 55 Date 18 June 1984 Depth 18 m Salinity (bottom)1 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (no 1m2) occurrence
Taxa (X) X SD
Nematoda 160 1000 137376 43967 Turbellaria 1 100 859 271 5 Oligochaeta 61 1000 52375 31985 ~~iQQY~kY~~ int~[mQi~ ~Q[Qipound~l~ m~nini~ biIDnQ~Ylb[s sp
3 3 3
300 300 300
2576 2576 2576
4147 4147 4147
~Q[Q~bi~ ~slIDQni~ Chironomid larvae
85 6
1000 600
72981 5152
34165 4434
Mean number of organismssample 322 Standard deviation 75
2Mean number 0 f organIsms m 276469 Standard deviation 64099
H= 178 5D= 065 SR= 0B4 J= 059
A-25
Frequency Density (no2) occurrence -----------------
Taxa (7) X SD
Nematoda 104 1000 89294 47409 Turbell ar i a 1 100 859 2715 ~~~nQ~sect imni~Q~ tjQQsectQlis flQig~ Oligochaeta
2 1
297
100 100
1000
171 7 859
255004
5430 271 5
146273 ~~i~QYsect~Y~lls ilr2is gQrQi~y~ IDDilDia
24 4
600 300
20606 3434
27212 6003
Ostracoda 2 200 171 7 3620 biDQSy~b~C~ sp M~QYsectisect m~r~~Qi ~QrQeniy QD Harpacticoida
157 1 1 1
900 100 100 100
134800 859 859 859
73197 2715 2715 2715
sectpoundQttQDs SsDQD 113 900 97022 61656
STATION 45 Date 2 July 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) No of samples 10
172 C
Mean number of organismssample 708 Standard deviation 339
M ean num b er f 20 organisms 607889 Standard deviation 290B22
H= 216 SD= 073 SR= 1 27 J= 058
1-26
STATION 18 Date 2 July 1984 Depth 24 WI
Sal inity (bottom) 00 ppt Temperature (bottom) 172 C No of samples 10
--------------------------------~-----------------------------------------Frequency Density (nom2)
Total occurrence Taxa number (7) X SD
Nematoda 202 1000 173437 113532 ~~~nih~sect mnpoundQ~ Oligochleta
4 102
400 1000
3434 87577
4434 54873
~~igQYsect~Y~12 inl~rmgi2 ~Q[~poundYl~ m~ni~nsectisect bimnQpoundylh~[~ Spa
115 4
15
900 300 900
98739 3434
12879
100720 6003 9274
~Q[QQniY~ sect~QDi~ 55 900 47223 40525 Harpacticoida 1 100 859 2715 sectpoundQiiQlD SDg~DEisect Chironomid larvae
2 6
200 400
1717 5152
3620 7240
Hymenoptera 1 100 859 2715 Hydracarina 1 100 859 2715
Mean number of organismssample 508 Standard deviation 253
2Mean num ber 0 f organIsms m 436169 Standard deviation 217580
H= 225 SD= 074 SR= 1 22 J= 063
A-27
STATION 58 Date 2 July 1984 Depth 58 1
Salinity (bottom) 00 ppt Temperature (bottom) IBO C No of samples 10
Frequency Density (no2) Total occurrence
Taxa number ltX) i SD
Nematoda 151 1000 129649 42729 Turbellaria 1 100 859 2715 01 i gochaeta 41 1000 35203 22698 ~~i~e~~~ int~~m~~ 3 200 2576 5795 btbQglYRhY~ Yir~n~ ~e~~ampy mni~niii bimQeamp~tb~ sp ~e~eQhiY ~mQni Chironomid larvae
1 4 2
68 1
100 300 200
1000 100
859 3434 171 7
58385 859
271 5 6003 3620
1557 1 2715
Mean number of organisassample 272 Standard deviation
I 2Mean num ber 0 f organIsms I 233539 Standard deviation 62546
H = 1 69 SD= 061 SR= 099 J= 053
A-28
73
STATION 55 Date 2 July 1984 Depth 15 III
Salinity (bottom) 00 ppt Temperature (bottom) 182 C No of samples 10
Frequency Density (nom2) occurrence
Taxa (X) X SD
Nematoda 184 1()00 157982 5264B Turbellaria 1 100 859 271 5 Oligochaeta ~~iQQ~sect~Y~ll~ n~[~~Qi~ bitnggYQDYsect Yi[~nsect ~QrQipoundM2 m2ni~nsectisect bimnQpoundYn~[2 sp ~QrQQhiM Qni Harpacticoida
91 2 1 B 2
96 2
1000 200 100 500 200
1000 200
78133 171 7 859
6869 171 7
82426 1111
26058 3620 271 5 1890 3620shy
25980 3620
ChirDnomid larvae 5 400 4293 6071 Chironolllid pupae 1 100 859 2715
Mean number of organismssample 393 Standard deviation 53
2t1ean nUllber Df organlsms III 337430 Standard deviatiDn 45080
H= 187 SD= 067 SR= 116 J= 054
A-29
STATION 45 Date 17 Jul y 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (X) X SD
Nematoda 215 1000 184599 45837 ~~n~b~~ imDipoundQ Qe~Qni fllHi2
3 1
300 100
2576 859
4147 2715
Oligochaeta 305 1000 261873 147955 ~~iQQY~k~ in~rm~2i ~Qr~ipoundYl IDniln~i~ Ostracoda
17 1 2
500 100 200
14590 859
171 7
22554 2715 3620
bmnQpound~ihr sp ~QCQQhiY ~lQD~
176 1
1000 100
151114 859
57125 2715
Harpacticoida 4 300 3434 6003 sectQ~~Qn poundnQnai~ Chironomid larvae
91 5
1000 400
78133 4293
61310 6071
Mean number of organismssample 821 Standard deviation 275
M b f 2ean num er 0 organlsms m 70491 1 Standard deviation 236369
H= 215 SD= 073 SR= 114 J= 060
A-30
STATION 18 Date 17 Jul y 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom 203 C No of samples 10
Frequency Density (001 2 Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 339 1000 291065 119140 Turbellaria 3 200 2576 5795 ~~2~b~~ limnipoundQ12Oligochaeta
4 18S
300 1000
3434 161417
6003 89393
~~iQQy~~~ls in~(ID~Qi bim~Qampy~bg(2 Spa
34 16
800 700
29192 1373B
22967 15252
~g(gebi~m ~21mQni2 Harpacticoida
52 3
1000 200
44647 2576
25212 5795
2ampQ11Q1202 ampS02Qg~2i2 Chironomid larvae
18 10
700 700
15455 8586
13904 701 0
Mean number of organi$mssample 667 Standard deviation IBB
H ean nurn b er 1 20 f organIsms m 572686 Standard deviation 161750
H = 1 99 SD= 065 SR= 090 J= 060
A-31
STATION 58 Date 17 July 1984 Depth 55 AI
Salinity (bottom) 00 ppt Temperature (bottom) 197 C No of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nellatoda 173 1000 14853B 66390 Turbellaria 1 100 859 271 5 ~~~n~hu ini~QA Oligochaeta
1 46
100 1000
859 39496
2715 26293
~gipoundQy~~ygl2 in~rJg~i~ b1nQglYRnY~ Yi( Bivalvia
6 2 1
400 200 100
5152 1717 859
8295 3620 271 5
ei~ IDnH~n~i~ 2 200 171 7 3620 Ostracoda 1 100 959 271 5 biIDQHlh~( Spa ~Q(QRbim ~21Qnisect Diptera pupae
1 94
1
100 1000 100
859 80708
859
2715 35332 2715
Heleidae 1arvae 5 500 4293 4525 Chironomid larvae 1 100 859 2715
Mean number of organismssample 335 Standard deviatiDn 113
Mean number of organismsRI2 287631 Standard deviation 97413
H= 1 86 SO= 064 SR= 155 J= 049
A-32
STATION 55 Date 17 July 1984 Depth 18 m Sali nity (bottom) 00 ppt TeAlperature (bottom) 199 C No of samples 10
Frequency Density (nom2 ) occurrence
Taxa (X) x S D
Nematoda 61 1000 52375 33972 Turbellaria 1 100 859 2715 Oligochaeta 24 900 20606 11590 ~~i2QY~k~~1 iOi[2 bimDQ~xlb~r sp ~Q[QQhi~ sectgni~ Chironomid larvae
3 1
38 3
200 100
1000 300
2576 859
32627 2576
5795 2715
19326 4147
Mean number of organismssample 131 standard deviation 54
M b f 2ean num er 0 organIsms 112477 Standard deviation 46757
H= 184 SD= 066 SR= 085 J= 065
bull
A-33
STATION 45 Date 1 August 1984 Depth 58 m Sal i nity (bottoll) 03 ppt Temperature (bottom) 203 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa nUllber (X) X SD
Nematoda 145 1000 124417 52344 Turbellaria 1 100 859 2715 Mmth~sect iHpoundQ~ Q~~Qi ilQ[i9Oligochaeta
5 3
196
500 300
1000
4293 2576
168286
4525 4147
91064 ~igQYsect~~li int9i Ostracoda
2 3
100 300
171 7 2576
5430 4147
bimnQpoundtl sp ~Q[Q2hiY sectlQni~
240 6
1000 600
206064 5152
73526 4434
sectpoundQtQl poundngnai~Helei dae larvae
1862 1
1000 100
1598713 859
966134 271 ~
Mean number of organismssample 2464 Standard deviation 1156
211 ean num ber 0 f organIsms II 2115590 Standard deviation 992518
H= 124 SD= 041 SR= 089 J= 036
A-34
STATION 1S Date 1 August 1984 Depth 24 II
Salinity (bottom) 00 ppt Temperature (bottom) 198 C No of samp I es 10
Frequency Density (nom2) occurrence ---------------- shy
Taxa (X) X S D
Nuertea 1 100 859 2715 Nellatolllorpha 1 100 859 2715 Nematoda 248 1000 212933 108288 Turbellaria 4 400 3434 4434 ~untb~la Hli~g Oligochaeta
4 206
400 1000
3434 176872
4434 75309
~~igQYli~dli i[t~(gi~ ~QtQpound l binQ~ybt2 sp ~2l~bi Q[i ~2tlgtQ(ila tirisect sectpoundQtel poundl9lla Chironomid larvae
10 1
20 205
1 574
9
500 100 800
1000 100
1000 400
8586 859
17172 176013
859 492836
7727
10709 271 5
14021 48104
271 5 150531
13696
Mean number of organismssample 1284 Standard deviation 290
M b f I 2ean nurn er 0 organIsms III 1102442 Standard deviation 2488B5
H= 211 SD= 071 SR= 1 16 J= 057
A-35
STATION 58 Date 1 August 1984 Depth 55 m Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samp 1es 10
Frequency Densi ty _ ltnom2 ) Total occurrence
Taxa number (7) X SD
Nemertea 1 100 859 2715 Nematoda 22 900 18889 15036 Turbellaria 1 100 859 2715 Oligochaeta 19 700 16313 17385 biiQQgl~QhY~ YiCg~~ 2 200 171 7 3620 ~Q[~i~~l~ m2nil~n2i2 ~Q[QehiYm ~lmQni2
4 164
300 1000
3434 140810
6003 103048
Heleidae larvae 8 500 6869 8868
Mean number of organismssample 221 Standard deviation 111
I 2Mean num ber 0 f organIsms m 189751 Standard deviation 95391
H = L 37 SD= 043 SR= 090 J= 046
A-36
STATION 55 Date 1 August 1984 Depth 15 m Salinity (bottoll) 01 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (i ) X SD
Nemertea 1 100 859 2715 Neutoda 122 1000 104749 7394B Turbellaria 4 300 3434 6003 ~~~~~nt~ secte~poundQa~ Oligochaeta
1 118
100 1000
859 101315
2715 61223
~giQgY~k~~l iot~[m~Qi btbQg~2b~ Y[O ~grQipound~ ~nl~ni b~ngpound~tb~[ Spa
3 1 5 1
200 100 500 100
2576 859
4293 859
5795 2715 4525 2715
~Q[QebiYm ~mQoi sect~QttQ~ ~OQOi Heleidae larvae
42 2 2
800 200 100
36061 171 7 171 7
21341 3620 5430
Chironomid larvae 4 400 3434 4434
Mean number of organismssapIe 306 Standard deviation 169
M b f I 2ean nurn er 0 organIsms m 262732 Standard deviation 145101
H = 198 SD= 067 SR= 1 45 J= 054
A-37
~-- --------------~~-------------
STATION 45 Date 17 August 1984 Depth 61 1
Salinity (bottom) 10 ppt Temperature (bottom) 210 C No of samp 1es 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nematoda 240 1000 206064 130213 ~~h~sect limQ tjQ~~Hi~ fQ[i~~ Oligochaeta
31 2
245
400 100
1000
26617 1717
210357
75228 5430
121374 babgglYQbl~ Yi[~sect 1 100 859 2715 Ostracoda 1 100 859 271 5 biQ~xtb~[ Spa ~~Q~~isect ~[pound~Qisect ~Qgebi HQOi
333 2
143
1000 200
1000
28591 4 171 7
1227BO
106553 3620
106860 sectpoundQUg~ poundg~nsectisect 1738 1000 1492247 68441 7
Mean number of organismssample 2736 Standard deviation 944
M b f I 2ean num er 0 organlslls m 2349130 Standard deviation 810600
H= 172 SD= 056 SR= 079 J= 052
A-38
STATION 18 Date 17 August 1984 Depth 27 III
Sal i ni ty (botto) 01 ppt Temperature (bottom) 214 C No of samples 10
Frequency Density (nom 2 ) occurrence
Taxa (X) X SD
Nematoda 186 1000 159700 62468 ~tgt SPa 2 100 171 7 5430 Turbellaria 8 400 6869 8868 ~~ntbg2 imnipoundQ 12 700 10303 11304 Oligochaeta 283 1000 242984 90509 ~~iQQY~~Y~lls inlgtmggisBivalvia
4 1
400 100
3434 859
4434 271 5
~Qt~i~Y nilnsectisectbimnQpoundttbg[s SPa ~QtQQbi~ islmQDi2
1 17
286
100 900
1000
859 14596
245560
271 5 10747 83461
sectpoundetteln poundDsggnsectisect Chironomid larvae
526 4
1000 3Q0
451624 3434
179610 6003
Mean number of organismssapIe 1330 Standard deviation 162
Mean nurn ber I 20 f organIsms m 1141938 Standard deviation 139389
H= 214 SD= 073 SR= 1 06 J= 060
A-39
STATION 58 Date 17 August 1984 Depth 55 II
Salinity (bottom) 01 ppt Temperature (bottom) 220 C ND of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (7) x S D
Nematoda 68 1000 58385 27689 Turbellar i a 4 200 3434 8295 Oligochaeta 19 800 16313 13084 ~~i~Q~k~~l~ in~~[m~i bitUQ9Y2bYa Yi[~na Bivalvia
3 3 4
300 300 300
2576 2576 3434
4147 4147 6003
gQ[QipoundYl~ mnilDa 1 100 859 2715 binQpoundY~[ sp gQ[Q2UY a~mgnia sect~Qtgl~n ~n~~ni
2 338
6
100 1000 400
171 7 290207
5152
5430 56636 7240
Mean number of organismssample 448 Standard deviation 72
W b f 2lean num er 0 organlsms II 384653 Standard deviation 61988
H = 1 27 SD= 041 SR= 1 02 J= 038
A-40
STATION 55 Date 17 August 1984 Depth 18 m Salinity (bottom) 00 ppt Temperature (bottol) 223 C No of samples 10
Frequency Density (nom 2 ) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 291 1000 249853 118104 Turbellaria 1 100 859 2715 M~ntb~ mni~Q Oligochaeta
1 47
100 1000
859 40354
2715 28347
~~iQQ~sectkY~ll int~[m~gi bitbQQ1YSDY Yi(gn Bivalvia
25 12
6
900 500 400
21465 10303 5152
1231 0 18459 7240
~Q~2ipoundY mnil~ni Ostracoda
11 8
400 600
9445 6869
12442 6773
bmnQpoundYb~r~ SPa 52 1000 44647 19746 ~QrQsbY lmgnisectsQiielo snQ~ni~ Chironomid larvae
43 5
15
1000 400 BOO
36920 4293
12879
21436 6071 8344
Mean number of organismssample 517 Standard deviation 174
M b f I 2ean num er 0 organlsms m 443896 Standard deviation 149431
W = 228 SD= 065 SR= 1 33 J= 062
A-41
STATION 45 Date 29 August 1984 Depth 55 III
Salinity (bottom) 07 ppt Temperature (bottom) 199 C No of samples 10
Frequency Density (noI 2) Total occurrence
Taxa number (X) X SD
Nematoda 192 1000 164851 98380 ~sntbsect limnipoundQlDligochaeta
2 198
200 1000
171 7 170003
3620 67339
~Q[eipoundYls msniln~isect Ostracoda
1 4
100 400
859 3434
2715 4434
bimnQpoundytb[s Spa gQ[Qeniy sect21QOi~ sectpoundQttQlsO poundsOsggOi
164 87
2468
1000 1000 1000
140810 74698
2119025
39283 39460
840890
Mean number of organismssample 311 6 Standard deviation 101 1
ill b f 2nean nUll er 0 organIsms 2675398 Standard deviation 8682B8
W= 116 SD= 036 SR= 060 J= 039
A-42
STATION 18 Date 29 August 1984 Depth 30 bull Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samples 10
Total Frequency occurrence
Densi ty 2
(nom )
Taxa number (~ ) x S D
Nematoda 150 1000 128790 28905 Turbellaria 7 400 6010 9096 ~nh imni~Qj Oligochaeta ~~i~2Y~k~~1 ini~CIDgii bih2g~Qb~ Yi(~U2 Bivalvi a
B 145
1 1 2
600 1000
100 100 200
6869 124497
859 859
171 7
677 3 84732
271S 2715 3620
~Q[Qi~yli miDllgni bimn2pound~ih~C sp ~QtQehiY imQUia Harpacticoida
7 7
265 1
500 300
1000 100
6010 601 0
227529 859
8145 10747
139462 2715
sect~QtiQDi ~Q~Q~i~ Chironomid larvae
2471 2
1000 200
2121601 171 7
1063112 3620
Mean number of organismssample 3067 Standard deviation 121 9
2Mean number 0 f organIsms m 2633326 standard deviation 1046718
H = 1 09 SD= 034 SR= 1 04 J= 029
A-43
STATION 58 Date 29 August 1984 Depth 55 111
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (noI 2 ) Total occurrence -----------------
Taxa nUllber (X) X SD
Nemertea 4 400 3434 4434 Nuatoda 64 1000 54950 25016 Turbellaria 9 400 7727 11047 ~Hl~b limli~Q19 Oligochaeta
1 37
100 1000
859 31769
2715 19006
i~Qyh il(~~ bHtlQSlheln Yl Bivalvia
4 4
20
200 300 400
3434 3434
17172
8215 6003
26541 ~e(ijY l bQ~dlH sp
26 1
700 100
22324 859
25662 2715
~Q[QQhil iQ sectjgUell HD Heleidae larvae
418 20
1
1000 800 100
358895 17172
859
129443 12799 271 5
Mean number of organismssample 609 Standard deviation 175
nean num b er 0 f organIsms 1 111 2 522887 Standard deviation 150164
H= 176 SD= 051 SR= 1 30 J= 047
A-44
I I
I
I
STATION SS
Date 29 August 1984 Depth 21 1
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (no2) Total occurrence
Taxa nUllber (X) x S D
Nematoda ISO 1000 128790 37969 Turbellaria 1 100 859 271 5 Oligochaeta 48 1000 41213 16088 ~i~g~sect~~l iQ~~mgi bi~QQg~gb~sect ~i~nsect
10 14
600 600
eSB6 12020
9050 14137
Bivalvia 4 200 3434 7240 ~Q[Q~Yl niQaa Ostracoda
15 7
700 SOO
12879 6010
15806 7069
bmQg~~~b~ SPa 14 800 12020 8295 ~g[gaby mgni sect~g~~Qn ~ngnai Chironomid larvae
IB4 25 9
1000 900 700
157982 21465
7727
35563 16810 6335shy
Mean number of organismssample 481 Standard deviation B6
2Mean number 0 f organlsms m 412987 Standard deviation 74131
H= 24S SD= 074 SR= 1 23 J= 068
A-45
STATION 45 Date 14 September 1984 Depth 61 11
Salinity (bottom) 03 ppt Temperature (bottom) IB4 C No of samples 10
---------------------------------~----------------------------------------
Taxa TotalnUlllDer
Frequency occ~~~ence
Density (no 2) -----X-------sect7B
Nematoda 189 1000 162275 85233 t1tQ SPa
Turbellaria 2 2
200 100
171 7 171 7
3620 5430
~~~nIng limoifQl t1QQQDi~ flQriQ Oligochaeta
5 19
142
400 800
1000
4293 1631 3
121921
6071 12442 30504
~QQifYl mDl~D bimoQpoundt1hgr Spa Cumacea
19 184
2
800 1000 200
1631 3 157982
171 7
130B4 69541 3620
~Q[QnniYm ~~lmQDi Harpacticoida
118 1
1000 100
10131 5 B59
43367 2715
sectfQIIQD fOQgO Chironomid larvae
1780 1
1000 100
1528308 859
673586 2715
Mean number of organismssample 2464 Standard deviation 874
M ean num b er f 20 organlsms 2115590 Standard deviation 750305
H= 151 SD= 046 SR= 1 07 J= 041
A-46
STATION 18 Date 14 September 1984 Depth 21 III
Salinity (bottom) 01 ppt Temperature (botto) 182 C No of samples 10
Frequency DenSity (nom 2 ) Total occurrence ---------------- shy
Taxa nUlDber (i) X SD
Nemertea 1 100 859 271 5 Nematoda 186 1000 159700 44925 Turbellaria 16 400 13738 20717 ~~Dth~~ limni~Ql Oligochaeta
13 55
700 900
11162 47223
9096 30085
~Q~ei~Yl nil~Qi~ 17 900 14596 7069 bimDg~lbg[ Spa b 500 5152 6003 ~Q[Q2niY ~lgQi~ Harpacti coi da
562 2
1000 200
482533 171 7
136766 3620
sectpoundQttQ~Q~ ~n~ni 791 1000 679153 324290
Mean number of organismssample 1649 Standard deviation 447
I 211ean nUll ber 0 f organIsms I 1415831 Standard deviation 384136
H= 179 SD= 064 SR= 084 J= 054
A-47
STATION 58 Date 14 September 1984 Depth 58 III
Salinity (bottom) 01 ppt Temperature (bottom) 191 C No of sampl es 10
-------------------------------------------~------------------------------Frequency Density (nom 2 )
Total occurrence Taxa number eX) X SD
Nemertea 1 100 859 2715 Nematoda 55 1000 47223 18658 Turbellaria 10 500 8586 11448
1 100 859 2715 Oligochaeta 41 1000 35203 17850 ~~iQQ~~gll iu1g[m~i ~Q[Q~Yl nilD bimnQ~Y~h[ Spa ~Q[Q~hiYm lmgui sectpoundQilg1D poundU2D Chironomid larvae
4 10
2 277
23 4
100 500 200
1000 700 300
3434 8586 171 7
237832 19748 3434
10861 11448 3620
50561 21051 6003
Mean number of organismssample 428 Standard deviation 51
M b f 2ean num er 0 organIsms III 367481 Standard deviation 43743
H= 179 SD= 055 SR= 114 J= 052
A-48
I I
STATION SS Date 14 September 1984 Depth 21 II
Salinity (bottom) 01 ppt Temperature (bottom) 190 C No of samples 10
--------------------------------------------------------------------~-----
Frequency Density (no1I2) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 102 1000 87577 39200 Oligochaeta 34 700 29192 31142 ~iQ2Y~y1 int(mgi~ bithQgl~en~ Yi(gDsect ~Q(~i~Y m~DilgDsecti~ bimDQamp~1h(sect sp ~2(QQhiY slmQD 2poundQiiQlsD ~sD~g~nsecti Chironomid larvae
36 18 16 17
100 16
3
1000 600 800 700
1000 800 300
30910 15455 13738 14596 85860 13738 2576
157BO 20953 10078 14621 32126 10861 4147
Mean number of organismssample 342 Standard deviation 97
2Mean nUllber 0 f organlsms m 293641 Standard deviation 83617
H= 262 SD= 079 SR= 095 J= 083
A-49
Appendix B--Sediment particle size and organic content of the Cathlamet Bay
benthic invertebrate sites 13 March through 14 September
1984
iii
1
Station 18a 48 54 57
Survey 1 1 1 1
Month March March March March
Day 13 13 13 13
Particle size (mm) Phib Percent by weight
gt 40 -2 000 000 000
20- 40 -1 000 000 000
10- 20 0 000 009 000
05- 10 1 018 1079 032
025- 050 2 545 7583 2468
0125- 025 3 8731 1225 6783
00625-0125 4 491 037 657
lt0625 (5-12) 216 067 060
Organic Content 160 116 128
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
b Phi= -log2(sediment particle diameter in mm)
B-1
Station 18a 48 54 57
Survey 2 2 2 2
Month April April April April
Day 5 5 5 5
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 003 093 000
05shy 10 1 005 31 75 023
025shy 050 2 087 5904 2368
0125- 025 3 6316 750 7155
00625-0125 4 3056 026 427
lt0625 (5-12) 533 052 028
Organic Content 081 077 065
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-2
Station 45 55 58
Survey 3 3 3 3
Month April April April April
Day 18 18 18 18
Particle size (mm)
gt 40
Phi
-2
Percent by weight
000 000 000
20shy 40 -1 000 000 000
10shy 20 0 005 009 004
05shy 10 1 010 027 013
025shy 050 2 015 095 225
0125- 025 3 097 536 6111
00625-0125 4 453 2821 2205
lt0625 (5-12) 9420 6511 1442
Organic Content 31 42 14
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-3
Station 18a 45 55 58
Survey 4 4 4 4
Month May May May May
Day 4 4 4 4
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 021
05shy 10 1 000 065 063
025shy 050 2 012 370 230
0125- 025 3 091 4099 4696
00625-0125 4 322 3650 3052
lt0625 (5-12) 9575 1810 1939
Organic Content 330 180 160
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-4
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
5
May
17
000
000
005
016
217
5862
2729
1170
100
45 55 58
5 5 5
May May May
17 17 17
Percent by weight
000 000
000 000
005 008
113 031
325 274
1903 5613
2784 2401
4870 1672
240 110
000
000
000
010
020
079
397
9494
390
B-5
Station 18al 45 55 58
Survey 6 6 6 6
Month June June June June
Day 6 6 6 6
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 020
05shy 10 1 005 051 027
025shy 050 2 005 301 1 79
0125- 025 3 074 3189 5404
00625-0125 4 599 4118 2885
lt0625 (5-12) 9317 2332 1485
Organic Content 340 240 150
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-6
Station
Survey
Month
Day
Particle size Cmm) Phi
gt 40 -2
20shy 40 -1
10shy 20 a
05shy 10 1
025shy 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
7
June
18
000
000
005
029
138
3917
4143
1768
180
45
7
June
18
55 58
7 7
June June
18 18
Percent by weight
000
000
000
010
020
080
427
9464
310
000 000
000 000
000 007
011 022
057 190
957 5286
3023 2642
5957 1853
1 70 110
B-7
Station 18al 45 55 58
Survey 8 8 8 8
Month July July July July
Day 2 2 2 2
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 006 002 006
05shy 10 1 006 0l3 023
025shy 050 2 017 088 171
0125- 025 3 074 2712 5365
00625-0125 4 552 3892 3081
lt0625 (5-12) 9345 3294 l354
Organic Content 410 210 160
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-8
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
9
July
17
000
000
003
013
130
4294
4434
1127
130
45
9
July
17
Percent
000
000
000
006
012
051
046
9885
290
55
9
July
17
by weight
000
000
019
048
091
628
3616
5597
030
58
9
July
17
000
000
004
022
158
5017
3148
1650
140
B-9
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18al
10
August
1
45
10
August
1
55
10
August
1
58
10
August
1
Percent by weight
000 000
000 004
001 004
009 018
018 088
098 306
049 2510
9824 7070
000
005
045
763
3604
4495
932
156
100 190 060
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-10
Station 18 45 55 58
Survey 11 11 11 11
Month August August August August
Day 17 17 17 17
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000 000
20- 40 -1 005 000 000 000
10- 20 0 021 003 000 210
05- 10 1 064 009 000 159
025- 050 2 226 027 045 2656
0125- 025 3 3259 131 712 3719
00625-0125 4 4327 195 1737 1159
lt0625 (5-12) 2098 9635 7506 2097
Organic Content 210 300 160 100
Ii I
B-11
Station
Survey
Month
Day
Particle size (mm) Phi
gt40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
12
August
29
000
000
012
046
186
3465
4498
17 93
241
45
12
August
29
55 58
12 12
August August
29 29
Percent by weight
000
000
002
009
026
118
189
9656
540
000 000
000 000
003 011
011 028
055 1013
859 5033
1596 1827
7476 2089
1 70 120
B-12
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
_-------------------- shy
B-13
Frequency Density (nolm 2) Total occurrence -----------------
Taxa number (7) X SD
Nemertea 16 467 9158 10989 Nematoda 266 1000 152258 54541 Turbellaria 23 600 13165 15518 ~l~nH ~Q~iQH 2 133 1145 3021 Oligochaeta 181 1000 103604 56532 bi~hQg~Qn~~ ~it~l~ ~QtQifg mli~lsectisectOstracoda
3 59 15
200 1000 733
1717 33772 8586
3555 23054
7256 ~Q[QQhiY HmQtlsect ~Q[QehiYm sect21tlfQ[lg EQlQQQt~i hQ~i
466 3 1
1000 200 67
266738 171 7 572
75094 3555 221 7
Harpacticoida 30 400 17172 40402 Chironomid larvae 10 533 5724 6214
Mean number of organismssa_pIe 717 Standard deviation 143
I 2Mean number 0 f organlsms m 615330 Standard deviation 122532
H= 226 SO= 072 SR= 119 J= 061
STATION 55 Date 18 April 1984 Depth 30 1ft
Salinity (bottom) 00 ppt Temperature (bottom) 93 C No of SaIIples 15
A-9
STATION 45 Date 4 Hay 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 103 C No of samples 10
Frequency Density (noI2) Total occurrence ---------------- shy
Taxa number (Xl X SD
Neutoda 269 1000 230963 167296 Turbellaria 1 100 859 2715 ~u~yuti Q~iQ ~Ub imni~Q
1 2
100 100
859 171 7
2715 5430
j2~Qn flec Oligochaeta
28 169
BOO 1000
24041 145103
19326 74351
~igeYk~ll iulCIDai ~Q(Qi~Y uini Ostracoda
32 4 5
aoo 400
400
27475 3434 4293
22463 4434 6071
biQQ~~tbt sp ~e(QQbYm mQoi sectampQeD ~nQDisect Chironomid larvae
25 2
578 2
900 200
1000 200
21465 1717
496271 171 7
15279 3620
293820 3620
Mean number of organismssample 111 8 Standard deviation 522
11 b f I 2ean num er 0 organIsms m 95991 5 Standard deviation 447842
H= 193 SD= 065 SR= 118 J= 052
A-10
STATION 18 Date 4 Hay 1984 Depth 34 II
Salinity (bottom) 00 ppt Temperature (bottom) 104 C No of saMples 10
Frequency Density (noI 2 ) occurrence ----------------shy
Taxa (X) X SD
Nemertea 10 600 8SB6 10709 Nuatoda 153 1000 131366 47899 Turbellaria 8 600 6869 6773 ~n1b limnpoundQl Oligochaeta
11 147
700 1000
middot9445 126214
9449 6231 7
~i~g~kXl in1(m~i ~g(2iY OiOi Ostracoda
86 4 1
900 300 100
73840 3434 859
61543 6003 2715
bimoQpoundx1b( sp ~2(QQbiYm mgoiDi ptera adult
3 57
3
300 900 300
2576 48940
2576
4147 21815 4147
Chironomid larvae 4 300 3434 6003 Chironomid pupae 1 100 859 2715
Hean nUMber of orQanismssample 489 Standard deviation 160
b f 2nean nUll er 0 organIsms II 418997 Standard deviation 137721
H= 243 SD= 076 SR= 1 34 J= 066
A-l1
STATION 5B Date 4 Hay 1984 Depth 61 bull Salinity (botto~) 00 ppt Temperature (bottom) 110 C No of suples 10
Frequency Density (nom 2) Total occurrence ---------------- shy
Taxa number (X) X SD
Neertn 41 1000 35203 21206 Nematoda 211 1000 181165 53305 Turbellaria 4 200 3434 7240 Oligochaeta 89 1000 76415 32240 ~i~2~~~11~ iU1(~i~bi1begygny YitQ ~e(biYl ~OiDi OstracDda
4 3
20 1
400 200 BOO 100
3434 2576
17172 859
4434 5795
19829 2715
biue~1bt~ sp ~2(egniY Imeoi sectg11g1O OdD Helei dae larvae
5 32
1 1
400 900 100 100
4293 27475
859 859
6071 18010 2715 2715
Chironomid larvae 7 400 6010 9096
Mean number of organismssample 419 Standard deviation 93
b f 2ean nUll er 0 organIsms m 359753 Standard deviation 79875
H= 221 SD= 068 SR= 138 J= 060
A-12
Frequency Density (nolm 2) occurrence -----------------
Taxa (X) X SD
Nemertea 23 900 1974S 15171 Neutollorpha 1 100 859 271 5 Nellatoda 269 1000 230963 69923 Turbellaria 10 600 8586 991 4 ~~xYnki Q~ampiQ 4 300 3434 6003 ~nb limnipoundQl Oligochaeta
1 79
100 1000
859 67829
2715 40363
~i~Q~kXl io[~i biDe9XQDX ~i[~OBi valvi a
11 3 1
800 300 100
9445 2576 859
6335 4147 271 5
~Q[~poundY mnil~n bimoQampXD[ sp ~Q[QabiY lQO Harpacticoida
18 2
159 1
700 200
1000 100
15455 171 7
135659 859
13904 3620
54272 2715
Chironomid larvae 2 200 171 7 3620 Trichoptera larvae 1 100 859 2715
STATION 55 Date 4 May 1984 Depth 21 m Salinity (bottom) 00 ppt Temperature (bottom) 107 C No of suples 10
Mean number of organismssamples 594 Standard deviation 147
Mean number of organismsm2 501422 Standard deviation 126525
H= 219 aD= 069 SR= 1 63 J= 055
A-13
STATION 45 Date 17 May 1984 Depth 61 m Sal i ni ty (bottom) 01 ppt Temperature (bottom) 121 C No of sampl es 10
Frequency Total occurrence
Taxa nUlllber (7)
NelDertea 1 100 859 2715 Nematoda 163 1000 139952 127996 Polychaeta 1 100 859 2715 ~~~n~h~ imni~Qs Hobsonia florida
2 6
200 600
171 7 5152
3620 4434
Oligochaeta 329 1000 282479 13291 8 ~~lQQYsectk~~12 in~~rmQi 57 900 48940 33142 ~Qr~ipound~2 ffi2niDi 6 500 5152 6003 Ostracoda 5 200 4293 10898 bimDg~yth( SPa 13 600 11162 12176 ~Q(Qebi~m sectQDisect Harpacticaida
2 2
200 100
1717 1717
3620 5430
2poundQttQD poundDQDsectisectDiptera adult
296 1
1000 100
254146 859
172633 271 5
Mean number of organismssample 884 Standard deviation 326
b f I 2nean num er 0 organlss m 759002 Standard deviation 280131
H= 209 SD= 071 SR= 1 33 J= 055
A-14
STATION 18 Date 17 May 1984 Depth 30 m Salinity (bottom) 00 ppt Temperature (bottom) 122 C No of samples 12
Frequency Density (nom2) Total occurrence -----------------
Taxa number (X) X SD
Nematoda 50 833 35775 22815 ~ntb limnipoundQl 3 Oligochaeta 97
250 833
2147 69404
3883 48495
~igQ~~k~ intr~ 27 ~QrQipoundY mnin~i~ 5
667 333
19319 3S7S
19068 5740
Ostracoda 1 83 716 2479 bimnQpound~nr sp 5 ~Q(Q~bY ~mQni S4 ~Q(Q~niY ~QinipoundQ(n 3
333 833 250
3578 60102
2147
5740 43780 3883
fgnQ2Q(i bQ~i 1 sectpoundQtgO poundnQn~i 2 Chironomid larvae 4
83 167 250
716 1431 2862
2479 3342 5592
Mean number of organismssample 235 Standard deviation 116
nean nURl b er 0 f organlslls II 2 201771 Standard devi ati on 99221
H= 236 SD= 075 SR= 1 35 J= 066
A-15
STATION 58 Date 17 May 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) 123 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nemertea 2 100 171 7 5430 Nematoda 75 1000 64395 34404 ~~2Qih~a limQi~Q 2 200 171 7 3620 Oligochaeta 60 1000 51516 33376 ~~igQY~~~12 iQ~[~~gi 2 200 171 7 3620 bitQQ9~Bh~sect Yr~Qsect 3 200 2576 579~
gQ[Qi~Yl ID2Dil~nsectisect Ostracoda
6 6
500 400
5152 5152
6003 8295
binQ~~nr[ sp gg[QQOYm mQQsect sect~QttQn 5n2Q~nsectia Chironomid larvae
2 34
1 1
200 1000
100 100
171 7 29192
859 859
3620 12927 271 5 2715
Mean number of organismssample 194 Standard deviation
2Mean nurn ber 0 f organIsms fA 166568 Standard deviation 56259
H= 225 SD= 072 SR= 1 45 J= 063
A-16
66
STATION 55 Date 17 May 1984 Depth 24 II
Salinity (bottom) 00 ppt Telllperature (bottom) 126 C No of samples 10
Total Frequency occurrence
Taxa nUllber (X) X SD --------------------------------------------------------------~-----------
Nematollorpha 2 200 171 7 3620 Nematoda 63 1000 54092 35297 Oligochaeta 94 1000 80708 44004 ~~iQQY~k~~l iQt~(m~Qi bitnQg~Qh~~ Yi[~Q gQ[QipoundY~ mni~Q~i Ostracoda
10 9 4 2
600 800 300 100
8586 7727 3434 171 7
9050 4874 6003 5430
bimnQ~~ln~[e sp ~Q(QQbiYm mQD ~Q[QQbiYm 2inipoundQ[n~ Chironomid larvae
6 142
3 1
600 1000 200 100
5152 121921
2576 859
4434 50682 5795 2715
Mean number of organismssample 336 Standard deviation 62
2Mean num ber 0 f organisms m 288490 Standard deviation 53421
H= 214 SD= 071 SR= 119 J= 062
A-17
STATION 45 Date 1 June 1984 Depth 61 m Salinity (bottom) 01 ppt Temperature (bottom) 139 C No of samples 10
Total Frequency occurrence
Density (no2)
Taxa nUllber (1) X SD
Nematoda 174 900 149396 132347 Turbellaria 5 200 4293 10898 ~~~QiQ~sect tmQtpoundQ~ ~QQsectQ flQi~sect Oligochaeta ~~iQQysecttygl~ iQl~rm~~i2 ~Q[Qi~~l~ ~~DilgDsectisect Ostracoda
5 20
190 103
12 5
400 900
1000 900
60 (I 400
4293 17172
163134 88436 10303 4293
6071 8095
92563 51524 11304 6071
bimnQpoundytng[ sp ~gQmYsectisect IDg[pound~Qisect ~Q[QQhi~m sectlmQDisect sectpoundQtiQlsectQ pound~Qgsectisect ChironQmid larvae
33 1
10 375
2
900 100 700
1000 200
28334 859
8586 321975
171 7
17196 2715 7010
179201 3620
Mean number of organismssample 935 Standard deviation 254
nurn b 0 f 2lean er organlsms m 802791 Standard deviation 218423
H= 239 SD= 075 SR= 1 22 J= 065
A-18
STATION 18 Date 1 June 1984 Depth 30 AI
Salinity (bottom) 00 ppt Temperature (bottom) 134 C No of samples 11
Frequency Density (no 1m2)
Taxa Total number
occurrence (X)
---------------- shyX SD
Turbellaria 14 636 10928 1157 7 ~~~Qltlg~ ilipoundQ~ Oligochaeta
10 178
727 1000
7805 138937
601 6 67913
~~iQQy~tY~l~ ill~[m~Qi~ 122 636 95227 93619 ~Q[Qipound~ l~i~lsectisect Ostracoda
7 1
455 9 1
5464 78 1
6946 2589
billQylhg[ Spa 16 818 12489 10420 GQ[QQQil HQi~ 139 1000 108496 70934 gQ[Qebi secteiifQ[~ sectQiiQi2 ~Q~sectisect Diptera pupae
1 2 1
9 1 182
11 1
781 1561 781
2589 3473 2589
Chironomid larvae 2 182 1561 3473
Mean number of organismssample 714 Standard deviation 284
nean num b er 0 f organlsms m 2 612728 Standard deviation 244249
H= 232 SD= 075 SR= 1 25 J= 063
A-19
STATION 58 Date 1 June 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 138 C No of samples 10
Frequency Density (noI 2 ) Total occurrence
Taxa number (X) X SD
Nematoda 173 1000 148538 47383 Turbellaria 3 300 2576 4147 Oligochaeta 53 1000 45506 32139 ~giQgY2k~g~ ini~[m~Qi~ bQg91YehY2 Yi[~nsect ~Qr~i~Yl m~nl~n~i
26 1
10
600 100 500
22324 859
8586
3391 2 2715
13424 bimnQpound~Q~[ sp ~Q9~m[Y poundgnitYpoundQlysect ~QtQehiYm ~lQni
4 1
46
200 100
1000
3434 859
39496
8295 2715
22243 Chironomid larvae 1 100 859 271 5
Mean number of organismssample 318 standard deviation 103
M b f I 2ean num er 0 organlsms III 273035 Standard deviation 88842
H = 1 99 SD= 065 SR= 1 08 J= 060
A-20
STATION 55 Date 1 June 1984 Depth 27 m Salinity (bottom) 00 ppt Temp era t u r e (b 0 t tom) 140 C No of samples 10
Frequency Density (nom 2 ) Total occurrence
Taxa nueber (X) X SD
Nematoda 157 1000 134800 69524 Turbellaria 9 400 7727 13696 tlHl~lk ~2~~iQH 1 100 859 2715 Oligochaeta 49 1000 42071 32745 ~~iQQysect~gl~ S[l9sect bHbQghQb~~ Yirl~
10 1
400 100
8586 859
12799 2715
tQ[Qpoundls l2lilUsect bilQHSbg[ sp ~QrQQbil nllQisectHarpacticoida
4 7
134 1
400 500
1000 100
3434 6010
115052 859
4434 7069
44742 271 5
sectpoundQUQlls poundsQgn~sect Chironomid larvae
1 1
100 100
859 859
271 5 2715
Hydracarina 1 100 859 2715
Hean number of organismssample 376 Standard deviation 132
M b f 2ean num er 0 organIsms m 322834 Standard deviation 113127
H= 202 SD= 068 SR= 1 40 J= 055
A-21
STATION 45 Date 18 June 1984 Depth 67 m Salinity (bottom) 01 ppt Temperature (bottom) 149 C No of samples 10
Frequency Density (nom2)
Taxa Total nUllber
occurrence ex) i SD
Nematoda 109 1000 93587 3891 7 Turbell ari a 3 200 2576 5795 ~g~tbg limoipoundQl Q~Qni2 fQ(i~2 Oligochaeta ~gigQ~~Y inl[ggi ~Q[QiSY2 moilo Ostracoda
3 2
194 44
7 3
200 200
1000 1000 200 200
2576 171 7
16656B 37778 6010 2576
5795 3620
118364 36020 12831 5795
bimoQampl~n~[2 sp ~Q[QQbiYm lmgoi Harpacticoida sectpoundQQ1202 pound2022Osect Chironomid larvae
68 1 1
113 2
900 100 100
1000 200
58385 859 859
97022 171 7
97627 2715 2715
73976 3620
Mean number of organismssa_pie 550 Standard deviation 371
Mean nUll ber 0 f organIsms 2II 472230 Standard deviation 318519
H= 242 SD= 077 SR= 1 32 Ja 065
A-22
STATION 18 Date 18 June 1984 Depth 34 m Salinity (bottom) 00 ppt Temperature (bottom) 155 C No of samples 10
Frequency Density (nom 2) Total occurrence ----------------shy
Taxa nUlber (Z) X SD
Neutoda 291 1000 249853 138826 Turbellaria 1 100 859 2715 ~~n~~nki~ sectQ~~iQ~2 ~g~ntbg2 limni~Q9 Oligochaeta
1 3
123
100 300
1000
859 2576
105608
271 5 4147
48240 ~~igQY~~~~9 int~(mgii ~Q[~i~~~ mini~ni bimnQ~ylbg(~ Spa
67 6 5
1000 500 400
57526 5152 4293
40485 6003 6071
~Q(QebiYm ~imQnisect Harpacticoida
80 2
1000 200
68688 171 7
41276 3620
sect~QttQini ~2nig~n~i Chironomid larvae
2 4
200 300
171 7 3434
3620 6003
Mean number of organismssample 585 Standard deviation 194
I 2Mean urn b er 0 f organIsms m 502281 Standard deviation 166943
H= 203 SD= 068 SR= 1 20 J= 057
A-23
STATI ON 58 Date 18 June 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (noI 2) Total occurrence
TaKa number (X) X SD
Nellertea 2 100 1717 5430 Nematoda 160 1000 137376 6361 1 Turbellaria 4 400 3434 4434 Oligochaeta 36 1000 3091 0 14705 ~iQQYik~ Q1rQ 4 300 3434 6003 bitnQgl~ebysect YrDsect ~Q[QiY~ ~~nni biQQpoundY1h[ sp ~Q[Qeng ~ilQD Chironomid larvae
3 1 3
61 1
300 100 300
1000 100
2576 859
2576 52375
859
4147 2715 4147
1428 1 2715
Chironollid pupae 1 100 859 271 5
Mean number of organismssample 276 standard deviation 72
nean nurn b er 0 f organIsms I 2 236974 Standard deviation 61410
H = 1 78 SD= 060 SR= 1 23 J= 051
A-24
STATION 55 Date 18 June 1984 Depth 18 m Salinity (bottom)1 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (no 1m2) occurrence
Taxa (X) X SD
Nematoda 160 1000 137376 43967 Turbellaria 1 100 859 271 5 Oligochaeta 61 1000 52375 31985 ~~iQQY~kY~~ int~[mQi~ ~Q[Qipound~l~ m~nini~ biIDnQ~Ylb[s sp
3 3 3
300 300 300
2576 2576 2576
4147 4147 4147
~Q[Q~bi~ ~slIDQni~ Chironomid larvae
85 6
1000 600
72981 5152
34165 4434
Mean number of organismssample 322 Standard deviation 75
2Mean number 0 f organIsms m 276469 Standard deviation 64099
H= 178 5D= 065 SR= 0B4 J= 059
A-25
Frequency Density (no2) occurrence -----------------
Taxa (7) X SD
Nematoda 104 1000 89294 47409 Turbell ar i a 1 100 859 2715 ~~~nQ~sect imni~Q~ tjQQsectQlis flQig~ Oligochaeta
2 1
297
100 100
1000
171 7 859
255004
5430 271 5
146273 ~~i~QYsect~Y~lls ilr2is gQrQi~y~ IDDilDia
24 4
600 300
20606 3434
27212 6003
Ostracoda 2 200 171 7 3620 biDQSy~b~C~ sp M~QYsectisect m~r~~Qi ~QrQeniy QD Harpacticoida
157 1 1 1
900 100 100 100
134800 859 859 859
73197 2715 2715 2715
sectpoundQttQDs SsDQD 113 900 97022 61656
STATION 45 Date 2 July 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) No of samples 10
172 C
Mean number of organismssample 708 Standard deviation 339
M ean num b er f 20 organisms 607889 Standard deviation 290B22
H= 216 SD= 073 SR= 1 27 J= 058
1-26
STATION 18 Date 2 July 1984 Depth 24 WI
Sal inity (bottom) 00 ppt Temperature (bottom) 172 C No of samples 10
--------------------------------~-----------------------------------------Frequency Density (nom2)
Total occurrence Taxa number (7) X SD
Nematoda 202 1000 173437 113532 ~~~nih~sect mnpoundQ~ Oligochleta
4 102
400 1000
3434 87577
4434 54873
~~igQYsect~Y~12 inl~rmgi2 ~Q[~poundYl~ m~ni~nsectisect bimnQpoundylh~[~ Spa
115 4
15
900 300 900
98739 3434
12879
100720 6003 9274
~Q[QQniY~ sect~QDi~ 55 900 47223 40525 Harpacticoida 1 100 859 2715 sectpoundQiiQlD SDg~DEisect Chironomid larvae
2 6
200 400
1717 5152
3620 7240
Hymenoptera 1 100 859 2715 Hydracarina 1 100 859 2715
Mean number of organismssample 508 Standard deviation 253
2Mean num ber 0 f organIsms m 436169 Standard deviation 217580
H= 225 SD= 074 SR= 1 22 J= 063
A-27
STATION 58 Date 2 July 1984 Depth 58 1
Salinity (bottom) 00 ppt Temperature (bottom) IBO C No of samples 10
Frequency Density (no2) Total occurrence
Taxa number ltX) i SD
Nematoda 151 1000 129649 42729 Turbellaria 1 100 859 2715 01 i gochaeta 41 1000 35203 22698 ~~i~e~~~ int~~m~~ 3 200 2576 5795 btbQglYRhY~ Yir~n~ ~e~~ampy mni~niii bimQeamp~tb~ sp ~e~eQhiY ~mQni Chironomid larvae
1 4 2
68 1
100 300 200
1000 100
859 3434 171 7
58385 859
271 5 6003 3620
1557 1 2715
Mean number of organisassample 272 Standard deviation
I 2Mean num ber 0 f organIsms I 233539 Standard deviation 62546
H = 1 69 SD= 061 SR= 099 J= 053
A-28
73
STATION 55 Date 2 July 1984 Depth 15 III
Salinity (bottom) 00 ppt Temperature (bottom) 182 C No of samples 10
Frequency Density (nom2) occurrence
Taxa (X) X SD
Nematoda 184 1()00 157982 5264B Turbellaria 1 100 859 271 5 Oligochaeta ~~iQQ~sect~Y~ll~ n~[~~Qi~ bitnggYQDYsect Yi[~nsect ~QrQipoundM2 m2ni~nsectisect bimnQpoundYn~[2 sp ~QrQQhiM Qni Harpacticoida
91 2 1 B 2
96 2
1000 200 100 500 200
1000 200
78133 171 7 859
6869 171 7
82426 1111
26058 3620 271 5 1890 3620shy
25980 3620
ChirDnomid larvae 5 400 4293 6071 Chironolllid pupae 1 100 859 2715
Mean number of organismssample 393 Standard deviation 53
2t1ean nUllber Df organlsms III 337430 Standard deviatiDn 45080
H= 187 SD= 067 SR= 116 J= 054
A-29
STATION 45 Date 17 Jul y 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (X) X SD
Nematoda 215 1000 184599 45837 ~~n~b~~ imDipoundQ Qe~Qni fllHi2
3 1
300 100
2576 859
4147 2715
Oligochaeta 305 1000 261873 147955 ~~iQQY~k~ in~rm~2i ~Qr~ipoundYl IDniln~i~ Ostracoda
17 1 2
500 100 200
14590 859
171 7
22554 2715 3620
bmnQpound~ihr sp ~QCQQhiY ~lQD~
176 1
1000 100
151114 859
57125 2715
Harpacticoida 4 300 3434 6003 sectQ~~Qn poundnQnai~ Chironomid larvae
91 5
1000 400
78133 4293
61310 6071
Mean number of organismssample 821 Standard deviation 275
M b f 2ean num er 0 organlsms m 70491 1 Standard deviation 236369
H= 215 SD= 073 SR= 114 J= 060
A-30
STATION 18 Date 17 Jul y 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom 203 C No of samples 10
Frequency Density (001 2 Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 339 1000 291065 119140 Turbellaria 3 200 2576 5795 ~~2~b~~ limnipoundQ12Oligochaeta
4 18S
300 1000
3434 161417
6003 89393
~~iQQy~~~ls in~(ID~Qi bim~Qampy~bg(2 Spa
34 16
800 700
29192 1373B
22967 15252
~g(gebi~m ~21mQni2 Harpacticoida
52 3
1000 200
44647 2576
25212 5795
2ampQ11Q1202 ampS02Qg~2i2 Chironomid larvae
18 10
700 700
15455 8586
13904 701 0
Mean number of organi$mssample 667 Standard deviation IBB
H ean nurn b er 1 20 f organIsms m 572686 Standard deviation 161750
H = 1 99 SD= 065 SR= 090 J= 060
A-31
STATION 58 Date 17 July 1984 Depth 55 AI
Salinity (bottom) 00 ppt Temperature (bottom) 197 C No of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nellatoda 173 1000 14853B 66390 Turbellaria 1 100 859 271 5 ~~~n~hu ini~QA Oligochaeta
1 46
100 1000
859 39496
2715 26293
~gipoundQy~~ygl2 in~rJg~i~ b1nQglYRnY~ Yi( Bivalvia
6 2 1
400 200 100
5152 1717 859
8295 3620 271 5
ei~ IDnH~n~i~ 2 200 171 7 3620 Ostracoda 1 100 959 271 5 biIDQHlh~( Spa ~Q(QRbim ~21Qnisect Diptera pupae
1 94
1
100 1000 100
859 80708
859
2715 35332 2715
Heleidae 1arvae 5 500 4293 4525 Chironomid larvae 1 100 859 2715
Mean number of organismssample 335 Standard deviatiDn 113
Mean number of organismsRI2 287631 Standard deviation 97413
H= 1 86 SO= 064 SR= 155 J= 049
A-32
STATION 55 Date 17 July 1984 Depth 18 m Sali nity (bottom) 00 ppt TeAlperature (bottom) 199 C No of samples 10
Frequency Density (nom2 ) occurrence
Taxa (X) x S D
Nematoda 61 1000 52375 33972 Turbellaria 1 100 859 2715 Oligochaeta 24 900 20606 11590 ~~i2QY~k~~1 iOi[2 bimDQ~xlb~r sp ~Q[QQhi~ sectgni~ Chironomid larvae
3 1
38 3
200 100
1000 300
2576 859
32627 2576
5795 2715
19326 4147
Mean number of organismssample 131 standard deviation 54
M b f 2ean num er 0 organIsms 112477 Standard deviation 46757
H= 184 SD= 066 SR= 085 J= 065
bull
A-33
STATION 45 Date 1 August 1984 Depth 58 m Sal i nity (bottoll) 03 ppt Temperature (bottom) 203 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa nUllber (X) X SD
Nematoda 145 1000 124417 52344 Turbellaria 1 100 859 2715 Mmth~sect iHpoundQ~ Q~~Qi ilQ[i9Oligochaeta
5 3
196
500 300
1000
4293 2576
168286
4525 4147
91064 ~igQYsect~~li int9i Ostracoda
2 3
100 300
171 7 2576
5430 4147
bimnQpoundtl sp ~Q[Q2hiY sectlQni~
240 6
1000 600
206064 5152
73526 4434
sectpoundQtQl poundngnai~Helei dae larvae
1862 1
1000 100
1598713 859
966134 271 ~
Mean number of organismssample 2464 Standard deviation 1156
211 ean num ber 0 f organIsms II 2115590 Standard deviation 992518
H= 124 SD= 041 SR= 089 J= 036
A-34
STATION 1S Date 1 August 1984 Depth 24 II
Salinity (bottom) 00 ppt Temperature (bottom) 198 C No of samp I es 10
Frequency Density (nom2) occurrence ---------------- shy
Taxa (X) X S D
Nuertea 1 100 859 2715 Nellatolllorpha 1 100 859 2715 Nematoda 248 1000 212933 108288 Turbellaria 4 400 3434 4434 ~untb~la Hli~g Oligochaeta
4 206
400 1000
3434 176872
4434 75309
~~igQYli~dli i[t~(gi~ ~QtQpound l binQ~ybt2 sp ~2l~bi Q[i ~2tlgtQ(ila tirisect sectpoundQtel poundl9lla Chironomid larvae
10 1
20 205
1 574
9
500 100 800
1000 100
1000 400
8586 859
17172 176013
859 492836
7727
10709 271 5
14021 48104
271 5 150531
13696
Mean number of organismssample 1284 Standard deviation 290
M b f I 2ean nurn er 0 organIsms III 1102442 Standard deviation 2488B5
H= 211 SD= 071 SR= 1 16 J= 057
A-35
STATION 58 Date 1 August 1984 Depth 55 m Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samp 1es 10
Frequency Densi ty _ ltnom2 ) Total occurrence
Taxa number (7) X SD
Nemertea 1 100 859 2715 Nematoda 22 900 18889 15036 Turbellaria 1 100 859 2715 Oligochaeta 19 700 16313 17385 biiQQgl~QhY~ YiCg~~ 2 200 171 7 3620 ~Q[~i~~l~ m2nil~n2i2 ~Q[QehiYm ~lmQni2
4 164
300 1000
3434 140810
6003 103048
Heleidae larvae 8 500 6869 8868
Mean number of organismssample 221 Standard deviation 111
I 2Mean num ber 0 f organIsms m 189751 Standard deviation 95391
H = L 37 SD= 043 SR= 090 J= 046
A-36
STATION 55 Date 1 August 1984 Depth 15 m Salinity (bottoll) 01 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (i ) X SD
Nemertea 1 100 859 2715 Neutoda 122 1000 104749 7394B Turbellaria 4 300 3434 6003 ~~~~~nt~ secte~poundQa~ Oligochaeta
1 118
100 1000
859 101315
2715 61223
~giQgY~k~~l iot~[m~Qi btbQg~2b~ Y[O ~grQipound~ ~nl~ni b~ngpound~tb~[ Spa
3 1 5 1
200 100 500 100
2576 859
4293 859
5795 2715 4525 2715
~Q[QebiYm ~mQoi sect~QttQ~ ~OQOi Heleidae larvae
42 2 2
800 200 100
36061 171 7 171 7
21341 3620 5430
Chironomid larvae 4 400 3434 4434
Mean number of organismssapIe 306 Standard deviation 169
M b f I 2ean nurn er 0 organIsms m 262732 Standard deviation 145101
H = 198 SD= 067 SR= 1 45 J= 054
A-37
~-- --------------~~-------------
STATION 45 Date 17 August 1984 Depth 61 1
Salinity (bottom) 10 ppt Temperature (bottom) 210 C No of samp 1es 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nematoda 240 1000 206064 130213 ~~h~sect limQ tjQ~~Hi~ fQ[i~~ Oligochaeta
31 2
245
400 100
1000
26617 1717
210357
75228 5430
121374 babgglYQbl~ Yi[~sect 1 100 859 2715 Ostracoda 1 100 859 271 5 biQ~xtb~[ Spa ~~Q~~isect ~[pound~Qisect ~Qgebi HQOi
333 2
143
1000 200
1000
28591 4 171 7
1227BO
106553 3620
106860 sectpoundQUg~ poundg~nsectisect 1738 1000 1492247 68441 7
Mean number of organismssample 2736 Standard deviation 944
M b f I 2ean num er 0 organlslls m 2349130 Standard deviation 810600
H= 172 SD= 056 SR= 079 J= 052
A-38
STATION 18 Date 17 August 1984 Depth 27 III
Sal i ni ty (botto) 01 ppt Temperature (bottom) 214 C No of samples 10
Frequency Density (nom 2 ) occurrence
Taxa (X) X SD
Nematoda 186 1000 159700 62468 ~tgt SPa 2 100 171 7 5430 Turbellaria 8 400 6869 8868 ~~ntbg2 imnipoundQ 12 700 10303 11304 Oligochaeta 283 1000 242984 90509 ~~iQQY~~Y~lls inlgtmggisBivalvia
4 1
400 100
3434 859
4434 271 5
~Qt~i~Y nilnsectisectbimnQpoundttbg[s SPa ~QtQQbi~ islmQDi2
1 17
286
100 900
1000
859 14596
245560
271 5 10747 83461
sectpoundetteln poundDsggnsectisect Chironomid larvae
526 4
1000 3Q0
451624 3434
179610 6003
Mean number of organismssapIe 1330 Standard deviation 162
Mean nurn ber I 20 f organIsms m 1141938 Standard deviation 139389
H= 214 SD= 073 SR= 1 06 J= 060
A-39
STATION 58 Date 17 August 1984 Depth 55 II
Salinity (bottom) 01 ppt Temperature (bottom) 220 C ND of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (7) x S D
Nematoda 68 1000 58385 27689 Turbellar i a 4 200 3434 8295 Oligochaeta 19 800 16313 13084 ~~i~Q~k~~l~ in~~[m~i bitUQ9Y2bYa Yi[~na Bivalvia
3 3 4
300 300 300
2576 2576 3434
4147 4147 6003
gQ[QipoundYl~ mnilDa 1 100 859 2715 binQpoundY~[ sp gQ[Q2UY a~mgnia sect~Qtgl~n ~n~~ni
2 338
6
100 1000 400
171 7 290207
5152
5430 56636 7240
Mean number of organismssample 448 Standard deviation 72
W b f 2lean num er 0 organlsms II 384653 Standard deviation 61988
H = 1 27 SD= 041 SR= 1 02 J= 038
A-40
STATION 55 Date 17 August 1984 Depth 18 m Salinity (bottom) 00 ppt Temperature (bottol) 223 C No of samples 10
Frequency Density (nom 2 ) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 291 1000 249853 118104 Turbellaria 1 100 859 2715 M~ntb~ mni~Q Oligochaeta
1 47
100 1000
859 40354
2715 28347
~~iQQ~sectkY~ll int~[m~gi bitbQQ1YSDY Yi(gn Bivalvia
25 12
6
900 500 400
21465 10303 5152
1231 0 18459 7240
~Q~2ipoundY mnil~ni Ostracoda
11 8
400 600
9445 6869
12442 6773
bmnQpoundYb~r~ SPa 52 1000 44647 19746 ~QrQsbY lmgnisectsQiielo snQ~ni~ Chironomid larvae
43 5
15
1000 400 BOO
36920 4293
12879
21436 6071 8344
Mean number of organismssample 517 Standard deviation 174
M b f I 2ean num er 0 organlsms m 443896 Standard deviation 149431
W = 228 SD= 065 SR= 1 33 J= 062
A-41
STATION 45 Date 29 August 1984 Depth 55 III
Salinity (bottom) 07 ppt Temperature (bottom) 199 C No of samples 10
Frequency Density (noI 2) Total occurrence
Taxa number (X) X SD
Nematoda 192 1000 164851 98380 ~sntbsect limnipoundQlDligochaeta
2 198
200 1000
171 7 170003
3620 67339
~Q[eipoundYls msniln~isect Ostracoda
1 4
100 400
859 3434
2715 4434
bimnQpoundytb[s Spa gQ[Qeniy sect21QOi~ sectpoundQttQlsO poundsOsggOi
164 87
2468
1000 1000 1000
140810 74698
2119025
39283 39460
840890
Mean number of organismssample 311 6 Standard deviation 101 1
ill b f 2nean nUll er 0 organIsms 2675398 Standard deviation 8682B8
W= 116 SD= 036 SR= 060 J= 039
A-42
STATION 18 Date 29 August 1984 Depth 30 bull Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samples 10
Total Frequency occurrence
Densi ty 2
(nom )
Taxa number (~ ) x S D
Nematoda 150 1000 128790 28905 Turbellaria 7 400 6010 9096 ~nh imni~Qj Oligochaeta ~~i~2Y~k~~1 ini~CIDgii bih2g~Qb~ Yi(~U2 Bivalvi a
B 145
1 1 2
600 1000
100 100 200
6869 124497
859 859
171 7
677 3 84732
271S 2715 3620
~Q[Qi~yli miDllgni bimn2pound~ih~C sp ~QtQehiY imQUia Harpacticoida
7 7
265 1
500 300
1000 100
6010 601 0
227529 859
8145 10747
139462 2715
sect~QtiQDi ~Q~Q~i~ Chironomid larvae
2471 2
1000 200
2121601 171 7
1063112 3620
Mean number of organismssample 3067 Standard deviation 121 9
2Mean number 0 f organIsms m 2633326 standard deviation 1046718
H = 1 09 SD= 034 SR= 1 04 J= 029
A-43
STATION 58 Date 29 August 1984 Depth 55 111
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (noI 2 ) Total occurrence -----------------
Taxa nUllber (X) X SD
Nemertea 4 400 3434 4434 Nuatoda 64 1000 54950 25016 Turbellaria 9 400 7727 11047 ~Hl~b limli~Q19 Oligochaeta
1 37
100 1000
859 31769
2715 19006
i~Qyh il(~~ bHtlQSlheln Yl Bivalvia
4 4
20
200 300 400
3434 3434
17172
8215 6003
26541 ~e(ijY l bQ~dlH sp
26 1
700 100
22324 859
25662 2715
~Q[QQhil iQ sectjgUell HD Heleidae larvae
418 20
1
1000 800 100
358895 17172
859
129443 12799 271 5
Mean number of organismssample 609 Standard deviation 175
nean num b er 0 f organIsms 1 111 2 522887 Standard deviation 150164
H= 176 SD= 051 SR= 1 30 J= 047
A-44
I I
I
I
STATION SS
Date 29 August 1984 Depth 21 1
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (no2) Total occurrence
Taxa nUllber (X) x S D
Nematoda ISO 1000 128790 37969 Turbellaria 1 100 859 271 5 Oligochaeta 48 1000 41213 16088 ~i~g~sect~~l iQ~~mgi bi~QQg~gb~sect ~i~nsect
10 14
600 600
eSB6 12020
9050 14137
Bivalvia 4 200 3434 7240 ~Q[Q~Yl niQaa Ostracoda
15 7
700 SOO
12879 6010
15806 7069
bmQg~~~b~ SPa 14 800 12020 8295 ~g[gaby mgni sect~g~~Qn ~ngnai Chironomid larvae
IB4 25 9
1000 900 700
157982 21465
7727
35563 16810 6335shy
Mean number of organismssample 481 Standard deviation B6
2Mean number 0 f organlsms m 412987 Standard deviation 74131
H= 24S SD= 074 SR= 1 23 J= 068
A-45
STATION 45 Date 14 September 1984 Depth 61 11
Salinity (bottom) 03 ppt Temperature (bottom) IB4 C No of samples 10
---------------------------------~----------------------------------------
Taxa TotalnUlllDer
Frequency occ~~~ence
Density (no 2) -----X-------sect7B
Nematoda 189 1000 162275 85233 t1tQ SPa
Turbellaria 2 2
200 100
171 7 171 7
3620 5430
~~~nIng limoifQl t1QQQDi~ flQriQ Oligochaeta
5 19
142
400 800
1000
4293 1631 3
121921
6071 12442 30504
~QQifYl mDl~D bimoQpoundt1hgr Spa Cumacea
19 184
2
800 1000 200
1631 3 157982
171 7
130B4 69541 3620
~Q[QnniYm ~~lmQDi Harpacticoida
118 1
1000 100
10131 5 B59
43367 2715
sectfQIIQD fOQgO Chironomid larvae
1780 1
1000 100
1528308 859
673586 2715
Mean number of organismssample 2464 Standard deviation 874
M ean num b er f 20 organlsms 2115590 Standard deviation 750305
H= 151 SD= 046 SR= 1 07 J= 041
A-46
STATION 18 Date 14 September 1984 Depth 21 III
Salinity (bottom) 01 ppt Temperature (botto) 182 C No of samples 10
Frequency DenSity (nom 2 ) Total occurrence ---------------- shy
Taxa nUlDber (i) X SD
Nemertea 1 100 859 271 5 Nematoda 186 1000 159700 44925 Turbellaria 16 400 13738 20717 ~~Dth~~ limni~Ql Oligochaeta
13 55
700 900
11162 47223
9096 30085
~Q~ei~Yl nil~Qi~ 17 900 14596 7069 bimDg~lbg[ Spa b 500 5152 6003 ~Q[Q2niY ~lgQi~ Harpacti coi da
562 2
1000 200
482533 171 7
136766 3620
sectpoundQttQ~Q~ ~n~ni 791 1000 679153 324290
Mean number of organismssample 1649 Standard deviation 447
I 211ean nUll ber 0 f organIsms I 1415831 Standard deviation 384136
H= 179 SD= 064 SR= 084 J= 054
A-47
STATION 58 Date 14 September 1984 Depth 58 III
Salinity (bottom) 01 ppt Temperature (bottom) 191 C No of sampl es 10
-------------------------------------------~------------------------------Frequency Density (nom 2 )
Total occurrence Taxa number eX) X SD
Nemertea 1 100 859 2715 Nematoda 55 1000 47223 18658 Turbellaria 10 500 8586 11448
1 100 859 2715 Oligochaeta 41 1000 35203 17850 ~~iQQ~~gll iu1g[m~i ~Q[Q~Yl nilD bimnQ~Y~h[ Spa ~Q[Q~hiYm lmgui sectpoundQilg1D poundU2D Chironomid larvae
4 10
2 277
23 4
100 500 200
1000 700 300
3434 8586 171 7
237832 19748 3434
10861 11448 3620
50561 21051 6003
Mean number of organismssample 428 Standard deviation 51
M b f 2ean num er 0 organIsms III 367481 Standard deviation 43743
H= 179 SD= 055 SR= 114 J= 052
A-48
I I
STATION SS Date 14 September 1984 Depth 21 II
Salinity (bottom) 01 ppt Temperature (bottom) 190 C No of samples 10
--------------------------------------------------------------------~-----
Frequency Density (no1I2) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 102 1000 87577 39200 Oligochaeta 34 700 29192 31142 ~iQ2Y~y1 int(mgi~ bithQgl~en~ Yi(gDsect ~Q(~i~Y m~DilgDsecti~ bimDQamp~1h(sect sp ~2(QQhiY slmQD 2poundQiiQlsD ~sD~g~nsecti Chironomid larvae
36 18 16 17
100 16
3
1000 600 800 700
1000 800 300
30910 15455 13738 14596 85860 13738 2576
157BO 20953 10078 14621 32126 10861 4147
Mean number of organismssample 342 Standard deviation 97
2Mean nUllber 0 f organlsms m 293641 Standard deviation 83617
H= 262 SD= 079 SR= 095 J= 083
A-49
Appendix B--Sediment particle size and organic content of the Cathlamet Bay
benthic invertebrate sites 13 March through 14 September
1984
iii
1
Station 18a 48 54 57
Survey 1 1 1 1
Month March March March March
Day 13 13 13 13
Particle size (mm) Phib Percent by weight
gt 40 -2 000 000 000
20- 40 -1 000 000 000
10- 20 0 000 009 000
05- 10 1 018 1079 032
025- 050 2 545 7583 2468
0125- 025 3 8731 1225 6783
00625-0125 4 491 037 657
lt0625 (5-12) 216 067 060
Organic Content 160 116 128
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
b Phi= -log2(sediment particle diameter in mm)
B-1
Station 18a 48 54 57
Survey 2 2 2 2
Month April April April April
Day 5 5 5 5
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 003 093 000
05shy 10 1 005 31 75 023
025shy 050 2 087 5904 2368
0125- 025 3 6316 750 7155
00625-0125 4 3056 026 427
lt0625 (5-12) 533 052 028
Organic Content 081 077 065
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-2
Station 45 55 58
Survey 3 3 3 3
Month April April April April
Day 18 18 18 18
Particle size (mm)
gt 40
Phi
-2
Percent by weight
000 000 000
20shy 40 -1 000 000 000
10shy 20 0 005 009 004
05shy 10 1 010 027 013
025shy 050 2 015 095 225
0125- 025 3 097 536 6111
00625-0125 4 453 2821 2205
lt0625 (5-12) 9420 6511 1442
Organic Content 31 42 14
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-3
Station 18a 45 55 58
Survey 4 4 4 4
Month May May May May
Day 4 4 4 4
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 021
05shy 10 1 000 065 063
025shy 050 2 012 370 230
0125- 025 3 091 4099 4696
00625-0125 4 322 3650 3052
lt0625 (5-12) 9575 1810 1939
Organic Content 330 180 160
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-4
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
5
May
17
000
000
005
016
217
5862
2729
1170
100
45 55 58
5 5 5
May May May
17 17 17
Percent by weight
000 000
000 000
005 008
113 031
325 274
1903 5613
2784 2401
4870 1672
240 110
000
000
000
010
020
079
397
9494
390
B-5
Station 18al 45 55 58
Survey 6 6 6 6
Month June June June June
Day 6 6 6 6
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 020
05shy 10 1 005 051 027
025shy 050 2 005 301 1 79
0125- 025 3 074 3189 5404
00625-0125 4 599 4118 2885
lt0625 (5-12) 9317 2332 1485
Organic Content 340 240 150
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-6
Station
Survey
Month
Day
Particle size Cmm) Phi
gt 40 -2
20shy 40 -1
10shy 20 a
05shy 10 1
025shy 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
7
June
18
000
000
005
029
138
3917
4143
1768
180
45
7
June
18
55 58
7 7
June June
18 18
Percent by weight
000
000
000
010
020
080
427
9464
310
000 000
000 000
000 007
011 022
057 190
957 5286
3023 2642
5957 1853
1 70 110
B-7
Station 18al 45 55 58
Survey 8 8 8 8
Month July July July July
Day 2 2 2 2
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 006 002 006
05shy 10 1 006 0l3 023
025shy 050 2 017 088 171
0125- 025 3 074 2712 5365
00625-0125 4 552 3892 3081
lt0625 (5-12) 9345 3294 l354
Organic Content 410 210 160
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-8
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
9
July
17
000
000
003
013
130
4294
4434
1127
130
45
9
July
17
Percent
000
000
000
006
012
051
046
9885
290
55
9
July
17
by weight
000
000
019
048
091
628
3616
5597
030
58
9
July
17
000
000
004
022
158
5017
3148
1650
140
B-9
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18al
10
August
1
45
10
August
1
55
10
August
1
58
10
August
1
Percent by weight
000 000
000 004
001 004
009 018
018 088
098 306
049 2510
9824 7070
000
005
045
763
3604
4495
932
156
100 190 060
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-10
Station 18 45 55 58
Survey 11 11 11 11
Month August August August August
Day 17 17 17 17
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000 000
20- 40 -1 005 000 000 000
10- 20 0 021 003 000 210
05- 10 1 064 009 000 159
025- 050 2 226 027 045 2656
0125- 025 3 3259 131 712 3719
00625-0125 4 4327 195 1737 1159
lt0625 (5-12) 2098 9635 7506 2097
Organic Content 210 300 160 100
Ii I
B-11
Station
Survey
Month
Day
Particle size (mm) Phi
gt40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
12
August
29
000
000
012
046
186
3465
4498
17 93
241
45
12
August
29
55 58
12 12
August August
29 29
Percent by weight
000
000
002
009
026
118
189
9656
540
000 000
000 000
003 011
011 028
055 1013
859 5033
1596 1827
7476 2089
1 70 120
B-12
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
_-------------------- shy
B-13
STATION 45 Date 4 Hay 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 103 C No of samples 10
Frequency Density (noI2) Total occurrence ---------------- shy
Taxa number (Xl X SD
Neutoda 269 1000 230963 167296 Turbellaria 1 100 859 2715 ~u~yuti Q~iQ ~Ub imni~Q
1 2
100 100
859 171 7
2715 5430
j2~Qn flec Oligochaeta
28 169
BOO 1000
24041 145103
19326 74351
~igeYk~ll iulCIDai ~Q(Qi~Y uini Ostracoda
32 4 5
aoo 400
400
27475 3434 4293
22463 4434 6071
biQQ~~tbt sp ~e(QQbYm mQoi sectampQeD ~nQDisect Chironomid larvae
25 2
578 2
900 200
1000 200
21465 1717
496271 171 7
15279 3620
293820 3620
Mean number of organismssample 111 8 Standard deviation 522
11 b f I 2ean num er 0 organIsms m 95991 5 Standard deviation 447842
H= 193 SD= 065 SR= 118 J= 052
A-10
STATION 18 Date 4 Hay 1984 Depth 34 II
Salinity (bottom) 00 ppt Temperature (bottom) 104 C No of saMples 10
Frequency Density (noI 2 ) occurrence ----------------shy
Taxa (X) X SD
Nemertea 10 600 8SB6 10709 Nuatoda 153 1000 131366 47899 Turbellaria 8 600 6869 6773 ~n1b limnpoundQl Oligochaeta
11 147
700 1000
middot9445 126214
9449 6231 7
~i~g~kXl in1(m~i ~g(2iY OiOi Ostracoda
86 4 1
900 300 100
73840 3434 859
61543 6003 2715
bimoQpoundx1b( sp ~2(QQbiYm mgoiDi ptera adult
3 57
3
300 900 300
2576 48940
2576
4147 21815 4147
Chironomid larvae 4 300 3434 6003 Chironomid pupae 1 100 859 2715
Hean nUMber of orQanismssample 489 Standard deviation 160
b f 2nean nUll er 0 organIsms II 418997 Standard deviation 137721
H= 243 SD= 076 SR= 1 34 J= 066
A-l1
STATION 5B Date 4 Hay 1984 Depth 61 bull Salinity (botto~) 00 ppt Temperature (bottom) 110 C No of suples 10
Frequency Density (nom 2) Total occurrence ---------------- shy
Taxa number (X) X SD
Neertn 41 1000 35203 21206 Nematoda 211 1000 181165 53305 Turbellaria 4 200 3434 7240 Oligochaeta 89 1000 76415 32240 ~i~2~~~11~ iU1(~i~bi1begygny YitQ ~e(biYl ~OiDi OstracDda
4 3
20 1
400 200 BOO 100
3434 2576
17172 859
4434 5795
19829 2715
biue~1bt~ sp ~2(egniY Imeoi sectg11g1O OdD Helei dae larvae
5 32
1 1
400 900 100 100
4293 27475
859 859
6071 18010 2715 2715
Chironomid larvae 7 400 6010 9096
Mean number of organismssample 419 Standard deviation 93
b f 2ean nUll er 0 organIsms m 359753 Standard deviation 79875
H= 221 SD= 068 SR= 138 J= 060
A-12
Frequency Density (nolm 2) occurrence -----------------
Taxa (X) X SD
Nemertea 23 900 1974S 15171 Neutollorpha 1 100 859 271 5 Nellatoda 269 1000 230963 69923 Turbellaria 10 600 8586 991 4 ~~xYnki Q~ampiQ 4 300 3434 6003 ~nb limnipoundQl Oligochaeta
1 79
100 1000
859 67829
2715 40363
~i~Q~kXl io[~i biDe9XQDX ~i[~OBi valvi a
11 3 1
800 300 100
9445 2576 859
6335 4147 271 5
~Q[~poundY mnil~n bimoQampXD[ sp ~Q[QabiY lQO Harpacticoida
18 2
159 1
700 200
1000 100
15455 171 7
135659 859
13904 3620
54272 2715
Chironomid larvae 2 200 171 7 3620 Trichoptera larvae 1 100 859 2715
STATION 55 Date 4 May 1984 Depth 21 m Salinity (bottom) 00 ppt Temperature (bottom) 107 C No of suples 10
Mean number of organismssamples 594 Standard deviation 147
Mean number of organismsm2 501422 Standard deviation 126525
H= 219 aD= 069 SR= 1 63 J= 055
A-13
STATION 45 Date 17 May 1984 Depth 61 m Sal i ni ty (bottom) 01 ppt Temperature (bottom) 121 C No of sampl es 10
Frequency Total occurrence
Taxa nUlllber (7)
NelDertea 1 100 859 2715 Nematoda 163 1000 139952 127996 Polychaeta 1 100 859 2715 ~~~n~h~ imni~Qs Hobsonia florida
2 6
200 600
171 7 5152
3620 4434
Oligochaeta 329 1000 282479 13291 8 ~~lQQYsectk~~12 in~~rmQi 57 900 48940 33142 ~Qr~ipound~2 ffi2niDi 6 500 5152 6003 Ostracoda 5 200 4293 10898 bimDg~yth( SPa 13 600 11162 12176 ~Q(Qebi~m sectQDisect Harpacticaida
2 2
200 100
1717 1717
3620 5430
2poundQttQD poundDQDsectisectDiptera adult
296 1
1000 100
254146 859
172633 271 5
Mean number of organismssample 884 Standard deviation 326
b f I 2nean num er 0 organlss m 759002 Standard deviation 280131
H= 209 SD= 071 SR= 1 33 J= 055
A-14
STATION 18 Date 17 May 1984 Depth 30 m Salinity (bottom) 00 ppt Temperature (bottom) 122 C No of samples 12
Frequency Density (nom2) Total occurrence -----------------
Taxa number (X) X SD
Nematoda 50 833 35775 22815 ~ntb limnipoundQl 3 Oligochaeta 97
250 833
2147 69404
3883 48495
~igQ~~k~ intr~ 27 ~QrQipoundY mnin~i~ 5
667 333
19319 3S7S
19068 5740
Ostracoda 1 83 716 2479 bimnQpound~nr sp 5 ~Q(Q~bY ~mQni S4 ~Q(Q~niY ~QinipoundQ(n 3
333 833 250
3578 60102
2147
5740 43780 3883
fgnQ2Q(i bQ~i 1 sectpoundQtgO poundnQn~i 2 Chironomid larvae 4
83 167 250
716 1431 2862
2479 3342 5592
Mean number of organismssample 235 Standard deviation 116
nean nURl b er 0 f organlslls II 2 201771 Standard devi ati on 99221
H= 236 SD= 075 SR= 1 35 J= 066
A-15
STATION 58 Date 17 May 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) 123 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nemertea 2 100 171 7 5430 Nematoda 75 1000 64395 34404 ~~2Qih~a limQi~Q 2 200 171 7 3620 Oligochaeta 60 1000 51516 33376 ~~igQY~~~12 iQ~[~~gi 2 200 171 7 3620 bitQQ9~Bh~sect Yr~Qsect 3 200 2576 579~
gQ[Qi~Yl ID2Dil~nsectisect Ostracoda
6 6
500 400
5152 5152
6003 8295
binQ~~nr[ sp gg[QQOYm mQQsect sect~QttQn 5n2Q~nsectia Chironomid larvae
2 34
1 1
200 1000
100 100
171 7 29192
859 859
3620 12927 271 5 2715
Mean number of organismssample 194 Standard deviation
2Mean nurn ber 0 f organIsms fA 166568 Standard deviation 56259
H= 225 SD= 072 SR= 1 45 J= 063
A-16
66
STATION 55 Date 17 May 1984 Depth 24 II
Salinity (bottom) 00 ppt Telllperature (bottom) 126 C No of samples 10
Total Frequency occurrence
Taxa nUllber (X) X SD --------------------------------------------------------------~-----------
Nematollorpha 2 200 171 7 3620 Nematoda 63 1000 54092 35297 Oligochaeta 94 1000 80708 44004 ~~iQQY~k~~l iQt~(m~Qi bitnQg~Qh~~ Yi[~Q gQ[QipoundY~ mni~Q~i Ostracoda
10 9 4 2
600 800 300 100
8586 7727 3434 171 7
9050 4874 6003 5430
bimnQ~~ln~[e sp ~Q(QQbiYm mQD ~Q[QQbiYm 2inipoundQ[n~ Chironomid larvae
6 142
3 1
600 1000 200 100
5152 121921
2576 859
4434 50682 5795 2715
Mean number of organismssample 336 Standard deviation 62
2Mean num ber 0 f organisms m 288490 Standard deviation 53421
H= 214 SD= 071 SR= 119 J= 062
A-17
STATION 45 Date 1 June 1984 Depth 61 m Salinity (bottom) 01 ppt Temperature (bottom) 139 C No of samples 10
Total Frequency occurrence
Density (no2)
Taxa nUllber (1) X SD
Nematoda 174 900 149396 132347 Turbellaria 5 200 4293 10898 ~~~QiQ~sect tmQtpoundQ~ ~QQsectQ flQi~sect Oligochaeta ~~iQQysecttygl~ iQl~rm~~i2 ~Q[Qi~~l~ ~~DilgDsectisect Ostracoda
5 20
190 103
12 5
400 900
1000 900
60 (I 400
4293 17172
163134 88436 10303 4293
6071 8095
92563 51524 11304 6071
bimnQpoundytng[ sp ~gQmYsectisect IDg[pound~Qisect ~Q[QQhi~m sectlmQDisect sectpoundQtiQlsectQ pound~Qgsectisect ChironQmid larvae
33 1
10 375
2
900 100 700
1000 200
28334 859
8586 321975
171 7
17196 2715 7010
179201 3620
Mean number of organismssample 935 Standard deviation 254
nurn b 0 f 2lean er organlsms m 802791 Standard deviation 218423
H= 239 SD= 075 SR= 1 22 J= 065
A-18
STATION 18 Date 1 June 1984 Depth 30 AI
Salinity (bottom) 00 ppt Temperature (bottom) 134 C No of samples 11
Frequency Density (no 1m2)
Taxa Total number
occurrence (X)
---------------- shyX SD
Turbellaria 14 636 10928 1157 7 ~~~Qltlg~ ilipoundQ~ Oligochaeta
10 178
727 1000
7805 138937
601 6 67913
~~iQQy~tY~l~ ill~[m~Qi~ 122 636 95227 93619 ~Q[Qipound~ l~i~lsectisect Ostracoda
7 1
455 9 1
5464 78 1
6946 2589
billQylhg[ Spa 16 818 12489 10420 GQ[QQQil HQi~ 139 1000 108496 70934 gQ[Qebi secteiifQ[~ sectQiiQi2 ~Q~sectisect Diptera pupae
1 2 1
9 1 182
11 1
781 1561 781
2589 3473 2589
Chironomid larvae 2 182 1561 3473
Mean number of organismssample 714 Standard deviation 284
nean num b er 0 f organlsms m 2 612728 Standard deviation 244249
H= 232 SD= 075 SR= 1 25 J= 063
A-19
STATION 58 Date 1 June 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 138 C No of samples 10
Frequency Density (noI 2 ) Total occurrence
Taxa number (X) X SD
Nematoda 173 1000 148538 47383 Turbellaria 3 300 2576 4147 Oligochaeta 53 1000 45506 32139 ~giQgY2k~g~ ini~[m~Qi~ bQg91YehY2 Yi[~nsect ~Qr~i~Yl m~nl~n~i
26 1
10
600 100 500
22324 859
8586
3391 2 2715
13424 bimnQpound~Q~[ sp ~Q9~m[Y poundgnitYpoundQlysect ~QtQehiYm ~lQni
4 1
46
200 100
1000
3434 859
39496
8295 2715
22243 Chironomid larvae 1 100 859 271 5
Mean number of organismssample 318 standard deviation 103
M b f I 2ean num er 0 organlsms III 273035 Standard deviation 88842
H = 1 99 SD= 065 SR= 1 08 J= 060
A-20
STATION 55 Date 1 June 1984 Depth 27 m Salinity (bottom) 00 ppt Temp era t u r e (b 0 t tom) 140 C No of samples 10
Frequency Density (nom 2 ) Total occurrence
Taxa nueber (X) X SD
Nematoda 157 1000 134800 69524 Turbellaria 9 400 7727 13696 tlHl~lk ~2~~iQH 1 100 859 2715 Oligochaeta 49 1000 42071 32745 ~~iQQysect~gl~ S[l9sect bHbQghQb~~ Yirl~
10 1
400 100
8586 859
12799 2715
tQ[Qpoundls l2lilUsect bilQHSbg[ sp ~QrQQbil nllQisectHarpacticoida
4 7
134 1
400 500
1000 100
3434 6010
115052 859
4434 7069
44742 271 5
sectpoundQUQlls poundsQgn~sect Chironomid larvae
1 1
100 100
859 859
271 5 2715
Hydracarina 1 100 859 2715
Hean number of organismssample 376 Standard deviation 132
M b f 2ean num er 0 organIsms m 322834 Standard deviation 113127
H= 202 SD= 068 SR= 1 40 J= 055
A-21
STATION 45 Date 18 June 1984 Depth 67 m Salinity (bottom) 01 ppt Temperature (bottom) 149 C No of samples 10
Frequency Density (nom2)
Taxa Total nUllber
occurrence ex) i SD
Nematoda 109 1000 93587 3891 7 Turbell ari a 3 200 2576 5795 ~g~tbg limoipoundQl Q~Qni2 fQ(i~2 Oligochaeta ~gigQ~~Y inl[ggi ~Q[QiSY2 moilo Ostracoda
3 2
194 44
7 3
200 200
1000 1000 200 200
2576 171 7
16656B 37778 6010 2576
5795 3620
118364 36020 12831 5795
bimoQampl~n~[2 sp ~Q[QQbiYm lmgoi Harpacticoida sectpoundQQ1202 pound2022Osect Chironomid larvae
68 1 1
113 2
900 100 100
1000 200
58385 859 859
97022 171 7
97627 2715 2715
73976 3620
Mean number of organismssa_pie 550 Standard deviation 371
Mean nUll ber 0 f organIsms 2II 472230 Standard deviation 318519
H= 242 SD= 077 SR= 1 32 Ja 065
A-22
STATION 18 Date 18 June 1984 Depth 34 m Salinity (bottom) 00 ppt Temperature (bottom) 155 C No of samples 10
Frequency Density (nom 2) Total occurrence ----------------shy
Taxa nUlber (Z) X SD
Neutoda 291 1000 249853 138826 Turbellaria 1 100 859 2715 ~~n~~nki~ sectQ~~iQ~2 ~g~ntbg2 limni~Q9 Oligochaeta
1 3
123
100 300
1000
859 2576
105608
271 5 4147
48240 ~~igQY~~~~9 int~(mgii ~Q[~i~~~ mini~ni bimnQ~ylbg(~ Spa
67 6 5
1000 500 400
57526 5152 4293
40485 6003 6071
~Q(QebiYm ~imQnisect Harpacticoida
80 2
1000 200
68688 171 7
41276 3620
sect~QttQini ~2nig~n~i Chironomid larvae
2 4
200 300
171 7 3434
3620 6003
Mean number of organismssample 585 Standard deviation 194
I 2Mean urn b er 0 f organIsms m 502281 Standard deviation 166943
H= 203 SD= 068 SR= 1 20 J= 057
A-23
STATI ON 58 Date 18 June 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (noI 2) Total occurrence
TaKa number (X) X SD
Nellertea 2 100 1717 5430 Nematoda 160 1000 137376 6361 1 Turbellaria 4 400 3434 4434 Oligochaeta 36 1000 3091 0 14705 ~iQQYik~ Q1rQ 4 300 3434 6003 bitnQgl~ebysect YrDsect ~Q[QiY~ ~~nni biQQpoundY1h[ sp ~Q[Qeng ~ilQD Chironomid larvae
3 1 3
61 1
300 100 300
1000 100
2576 859
2576 52375
859
4147 2715 4147
1428 1 2715
Chironollid pupae 1 100 859 271 5
Mean number of organismssample 276 standard deviation 72
nean nurn b er 0 f organIsms I 2 236974 Standard deviation 61410
H = 1 78 SD= 060 SR= 1 23 J= 051
A-24
STATION 55 Date 18 June 1984 Depth 18 m Salinity (bottom)1 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (no 1m2) occurrence
Taxa (X) X SD
Nematoda 160 1000 137376 43967 Turbellaria 1 100 859 271 5 Oligochaeta 61 1000 52375 31985 ~~iQQY~kY~~ int~[mQi~ ~Q[Qipound~l~ m~nini~ biIDnQ~Ylb[s sp
3 3 3
300 300 300
2576 2576 2576
4147 4147 4147
~Q[Q~bi~ ~slIDQni~ Chironomid larvae
85 6
1000 600
72981 5152
34165 4434
Mean number of organismssample 322 Standard deviation 75
2Mean number 0 f organIsms m 276469 Standard deviation 64099
H= 178 5D= 065 SR= 0B4 J= 059
A-25
Frequency Density (no2) occurrence -----------------
Taxa (7) X SD
Nematoda 104 1000 89294 47409 Turbell ar i a 1 100 859 2715 ~~~nQ~sect imni~Q~ tjQQsectQlis flQig~ Oligochaeta
2 1
297
100 100
1000
171 7 859
255004
5430 271 5
146273 ~~i~QYsect~Y~lls ilr2is gQrQi~y~ IDDilDia
24 4
600 300
20606 3434
27212 6003
Ostracoda 2 200 171 7 3620 biDQSy~b~C~ sp M~QYsectisect m~r~~Qi ~QrQeniy QD Harpacticoida
157 1 1 1
900 100 100 100
134800 859 859 859
73197 2715 2715 2715
sectpoundQttQDs SsDQD 113 900 97022 61656
STATION 45 Date 2 July 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) No of samples 10
172 C
Mean number of organismssample 708 Standard deviation 339
M ean num b er f 20 organisms 607889 Standard deviation 290B22
H= 216 SD= 073 SR= 1 27 J= 058
1-26
STATION 18 Date 2 July 1984 Depth 24 WI
Sal inity (bottom) 00 ppt Temperature (bottom) 172 C No of samples 10
--------------------------------~-----------------------------------------Frequency Density (nom2)
Total occurrence Taxa number (7) X SD
Nematoda 202 1000 173437 113532 ~~~nih~sect mnpoundQ~ Oligochleta
4 102
400 1000
3434 87577
4434 54873
~~igQYsect~Y~12 inl~rmgi2 ~Q[~poundYl~ m~ni~nsectisect bimnQpoundylh~[~ Spa
115 4
15
900 300 900
98739 3434
12879
100720 6003 9274
~Q[QQniY~ sect~QDi~ 55 900 47223 40525 Harpacticoida 1 100 859 2715 sectpoundQiiQlD SDg~DEisect Chironomid larvae
2 6
200 400
1717 5152
3620 7240
Hymenoptera 1 100 859 2715 Hydracarina 1 100 859 2715
Mean number of organismssample 508 Standard deviation 253
2Mean num ber 0 f organIsms m 436169 Standard deviation 217580
H= 225 SD= 074 SR= 1 22 J= 063
A-27
STATION 58 Date 2 July 1984 Depth 58 1
Salinity (bottom) 00 ppt Temperature (bottom) IBO C No of samples 10
Frequency Density (no2) Total occurrence
Taxa number ltX) i SD
Nematoda 151 1000 129649 42729 Turbellaria 1 100 859 2715 01 i gochaeta 41 1000 35203 22698 ~~i~e~~~ int~~m~~ 3 200 2576 5795 btbQglYRhY~ Yir~n~ ~e~~ampy mni~niii bimQeamp~tb~ sp ~e~eQhiY ~mQni Chironomid larvae
1 4 2
68 1
100 300 200
1000 100
859 3434 171 7
58385 859
271 5 6003 3620
1557 1 2715
Mean number of organisassample 272 Standard deviation
I 2Mean num ber 0 f organIsms I 233539 Standard deviation 62546
H = 1 69 SD= 061 SR= 099 J= 053
A-28
73
STATION 55 Date 2 July 1984 Depth 15 III
Salinity (bottom) 00 ppt Temperature (bottom) 182 C No of samples 10
Frequency Density (nom2) occurrence
Taxa (X) X SD
Nematoda 184 1()00 157982 5264B Turbellaria 1 100 859 271 5 Oligochaeta ~~iQQ~sect~Y~ll~ n~[~~Qi~ bitnggYQDYsect Yi[~nsect ~QrQipoundM2 m2ni~nsectisect bimnQpoundYn~[2 sp ~QrQQhiM Qni Harpacticoida
91 2 1 B 2
96 2
1000 200 100 500 200
1000 200
78133 171 7 859
6869 171 7
82426 1111
26058 3620 271 5 1890 3620shy
25980 3620
ChirDnomid larvae 5 400 4293 6071 Chironolllid pupae 1 100 859 2715
Mean number of organismssample 393 Standard deviation 53
2t1ean nUllber Df organlsms III 337430 Standard deviatiDn 45080
H= 187 SD= 067 SR= 116 J= 054
A-29
STATION 45 Date 17 Jul y 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (X) X SD
Nematoda 215 1000 184599 45837 ~~n~b~~ imDipoundQ Qe~Qni fllHi2
3 1
300 100
2576 859
4147 2715
Oligochaeta 305 1000 261873 147955 ~~iQQY~k~ in~rm~2i ~Qr~ipoundYl IDniln~i~ Ostracoda
17 1 2
500 100 200
14590 859
171 7
22554 2715 3620
bmnQpound~ihr sp ~QCQQhiY ~lQD~
176 1
1000 100
151114 859
57125 2715
Harpacticoida 4 300 3434 6003 sectQ~~Qn poundnQnai~ Chironomid larvae
91 5
1000 400
78133 4293
61310 6071
Mean number of organismssample 821 Standard deviation 275
M b f 2ean num er 0 organlsms m 70491 1 Standard deviation 236369
H= 215 SD= 073 SR= 114 J= 060
A-30
STATION 18 Date 17 Jul y 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom 203 C No of samples 10
Frequency Density (001 2 Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 339 1000 291065 119140 Turbellaria 3 200 2576 5795 ~~2~b~~ limnipoundQ12Oligochaeta
4 18S
300 1000
3434 161417
6003 89393
~~iQQy~~~ls in~(ID~Qi bim~Qampy~bg(2 Spa
34 16
800 700
29192 1373B
22967 15252
~g(gebi~m ~21mQni2 Harpacticoida
52 3
1000 200
44647 2576
25212 5795
2ampQ11Q1202 ampS02Qg~2i2 Chironomid larvae
18 10
700 700
15455 8586
13904 701 0
Mean number of organi$mssample 667 Standard deviation IBB
H ean nurn b er 1 20 f organIsms m 572686 Standard deviation 161750
H = 1 99 SD= 065 SR= 090 J= 060
A-31
STATION 58 Date 17 July 1984 Depth 55 AI
Salinity (bottom) 00 ppt Temperature (bottom) 197 C No of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nellatoda 173 1000 14853B 66390 Turbellaria 1 100 859 271 5 ~~~n~hu ini~QA Oligochaeta
1 46
100 1000
859 39496
2715 26293
~gipoundQy~~ygl2 in~rJg~i~ b1nQglYRnY~ Yi( Bivalvia
6 2 1
400 200 100
5152 1717 859
8295 3620 271 5
ei~ IDnH~n~i~ 2 200 171 7 3620 Ostracoda 1 100 959 271 5 biIDQHlh~( Spa ~Q(QRbim ~21Qnisect Diptera pupae
1 94
1
100 1000 100
859 80708
859
2715 35332 2715
Heleidae 1arvae 5 500 4293 4525 Chironomid larvae 1 100 859 2715
Mean number of organismssample 335 Standard deviatiDn 113
Mean number of organismsRI2 287631 Standard deviation 97413
H= 1 86 SO= 064 SR= 155 J= 049
A-32
STATION 55 Date 17 July 1984 Depth 18 m Sali nity (bottom) 00 ppt TeAlperature (bottom) 199 C No of samples 10
Frequency Density (nom2 ) occurrence
Taxa (X) x S D
Nematoda 61 1000 52375 33972 Turbellaria 1 100 859 2715 Oligochaeta 24 900 20606 11590 ~~i2QY~k~~1 iOi[2 bimDQ~xlb~r sp ~Q[QQhi~ sectgni~ Chironomid larvae
3 1
38 3
200 100
1000 300
2576 859
32627 2576
5795 2715
19326 4147
Mean number of organismssample 131 standard deviation 54
M b f 2ean num er 0 organIsms 112477 Standard deviation 46757
H= 184 SD= 066 SR= 085 J= 065
bull
A-33
STATION 45 Date 1 August 1984 Depth 58 m Sal i nity (bottoll) 03 ppt Temperature (bottom) 203 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa nUllber (X) X SD
Nematoda 145 1000 124417 52344 Turbellaria 1 100 859 2715 Mmth~sect iHpoundQ~ Q~~Qi ilQ[i9Oligochaeta
5 3
196
500 300
1000
4293 2576
168286
4525 4147
91064 ~igQYsect~~li int9i Ostracoda
2 3
100 300
171 7 2576
5430 4147
bimnQpoundtl sp ~Q[Q2hiY sectlQni~
240 6
1000 600
206064 5152
73526 4434
sectpoundQtQl poundngnai~Helei dae larvae
1862 1
1000 100
1598713 859
966134 271 ~
Mean number of organismssample 2464 Standard deviation 1156
211 ean num ber 0 f organIsms II 2115590 Standard deviation 992518
H= 124 SD= 041 SR= 089 J= 036
A-34
STATION 1S Date 1 August 1984 Depth 24 II
Salinity (bottom) 00 ppt Temperature (bottom) 198 C No of samp I es 10
Frequency Density (nom2) occurrence ---------------- shy
Taxa (X) X S D
Nuertea 1 100 859 2715 Nellatolllorpha 1 100 859 2715 Nematoda 248 1000 212933 108288 Turbellaria 4 400 3434 4434 ~untb~la Hli~g Oligochaeta
4 206
400 1000
3434 176872
4434 75309
~~igQYli~dli i[t~(gi~ ~QtQpound l binQ~ybt2 sp ~2l~bi Q[i ~2tlgtQ(ila tirisect sectpoundQtel poundl9lla Chironomid larvae
10 1
20 205
1 574
9
500 100 800
1000 100
1000 400
8586 859
17172 176013
859 492836
7727
10709 271 5
14021 48104
271 5 150531
13696
Mean number of organismssample 1284 Standard deviation 290
M b f I 2ean nurn er 0 organIsms III 1102442 Standard deviation 2488B5
H= 211 SD= 071 SR= 1 16 J= 057
A-35
STATION 58 Date 1 August 1984 Depth 55 m Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samp 1es 10
Frequency Densi ty _ ltnom2 ) Total occurrence
Taxa number (7) X SD
Nemertea 1 100 859 2715 Nematoda 22 900 18889 15036 Turbellaria 1 100 859 2715 Oligochaeta 19 700 16313 17385 biiQQgl~QhY~ YiCg~~ 2 200 171 7 3620 ~Q[~i~~l~ m2nil~n2i2 ~Q[QehiYm ~lmQni2
4 164
300 1000
3434 140810
6003 103048
Heleidae larvae 8 500 6869 8868
Mean number of organismssample 221 Standard deviation 111
I 2Mean num ber 0 f organIsms m 189751 Standard deviation 95391
H = L 37 SD= 043 SR= 090 J= 046
A-36
STATION 55 Date 1 August 1984 Depth 15 m Salinity (bottoll) 01 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (i ) X SD
Nemertea 1 100 859 2715 Neutoda 122 1000 104749 7394B Turbellaria 4 300 3434 6003 ~~~~~nt~ secte~poundQa~ Oligochaeta
1 118
100 1000
859 101315
2715 61223
~giQgY~k~~l iot~[m~Qi btbQg~2b~ Y[O ~grQipound~ ~nl~ni b~ngpound~tb~[ Spa
3 1 5 1
200 100 500 100
2576 859
4293 859
5795 2715 4525 2715
~Q[QebiYm ~mQoi sect~QttQ~ ~OQOi Heleidae larvae
42 2 2
800 200 100
36061 171 7 171 7
21341 3620 5430
Chironomid larvae 4 400 3434 4434
Mean number of organismssapIe 306 Standard deviation 169
M b f I 2ean nurn er 0 organIsms m 262732 Standard deviation 145101
H = 198 SD= 067 SR= 1 45 J= 054
A-37
~-- --------------~~-------------
STATION 45 Date 17 August 1984 Depth 61 1
Salinity (bottom) 10 ppt Temperature (bottom) 210 C No of samp 1es 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nematoda 240 1000 206064 130213 ~~h~sect limQ tjQ~~Hi~ fQ[i~~ Oligochaeta
31 2
245
400 100
1000
26617 1717
210357
75228 5430
121374 babgglYQbl~ Yi[~sect 1 100 859 2715 Ostracoda 1 100 859 271 5 biQ~xtb~[ Spa ~~Q~~isect ~[pound~Qisect ~Qgebi HQOi
333 2
143
1000 200
1000
28591 4 171 7
1227BO
106553 3620
106860 sectpoundQUg~ poundg~nsectisect 1738 1000 1492247 68441 7
Mean number of organismssample 2736 Standard deviation 944
M b f I 2ean num er 0 organlslls m 2349130 Standard deviation 810600
H= 172 SD= 056 SR= 079 J= 052
A-38
STATION 18 Date 17 August 1984 Depth 27 III
Sal i ni ty (botto) 01 ppt Temperature (bottom) 214 C No of samples 10
Frequency Density (nom 2 ) occurrence
Taxa (X) X SD
Nematoda 186 1000 159700 62468 ~tgt SPa 2 100 171 7 5430 Turbellaria 8 400 6869 8868 ~~ntbg2 imnipoundQ 12 700 10303 11304 Oligochaeta 283 1000 242984 90509 ~~iQQY~~Y~lls inlgtmggisBivalvia
4 1
400 100
3434 859
4434 271 5
~Qt~i~Y nilnsectisectbimnQpoundttbg[s SPa ~QtQQbi~ islmQDi2
1 17
286
100 900
1000
859 14596
245560
271 5 10747 83461
sectpoundetteln poundDsggnsectisect Chironomid larvae
526 4
1000 3Q0
451624 3434
179610 6003
Mean number of organismssapIe 1330 Standard deviation 162
Mean nurn ber I 20 f organIsms m 1141938 Standard deviation 139389
H= 214 SD= 073 SR= 1 06 J= 060
A-39
STATION 58 Date 17 August 1984 Depth 55 II
Salinity (bottom) 01 ppt Temperature (bottom) 220 C ND of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (7) x S D
Nematoda 68 1000 58385 27689 Turbellar i a 4 200 3434 8295 Oligochaeta 19 800 16313 13084 ~~i~Q~k~~l~ in~~[m~i bitUQ9Y2bYa Yi[~na Bivalvia
3 3 4
300 300 300
2576 2576 3434
4147 4147 6003
gQ[QipoundYl~ mnilDa 1 100 859 2715 binQpoundY~[ sp gQ[Q2UY a~mgnia sect~Qtgl~n ~n~~ni
2 338
6
100 1000 400
171 7 290207
5152
5430 56636 7240
Mean number of organismssample 448 Standard deviation 72
W b f 2lean num er 0 organlsms II 384653 Standard deviation 61988
H = 1 27 SD= 041 SR= 1 02 J= 038
A-40
STATION 55 Date 17 August 1984 Depth 18 m Salinity (bottom) 00 ppt Temperature (bottol) 223 C No of samples 10
Frequency Density (nom 2 ) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 291 1000 249853 118104 Turbellaria 1 100 859 2715 M~ntb~ mni~Q Oligochaeta
1 47
100 1000
859 40354
2715 28347
~~iQQ~sectkY~ll int~[m~gi bitbQQ1YSDY Yi(gn Bivalvia
25 12
6
900 500 400
21465 10303 5152
1231 0 18459 7240
~Q~2ipoundY mnil~ni Ostracoda
11 8
400 600
9445 6869
12442 6773
bmnQpoundYb~r~ SPa 52 1000 44647 19746 ~QrQsbY lmgnisectsQiielo snQ~ni~ Chironomid larvae
43 5
15
1000 400 BOO
36920 4293
12879
21436 6071 8344
Mean number of organismssample 517 Standard deviation 174
M b f I 2ean num er 0 organlsms m 443896 Standard deviation 149431
W = 228 SD= 065 SR= 1 33 J= 062
A-41
STATION 45 Date 29 August 1984 Depth 55 III
Salinity (bottom) 07 ppt Temperature (bottom) 199 C No of samples 10
Frequency Density (noI 2) Total occurrence
Taxa number (X) X SD
Nematoda 192 1000 164851 98380 ~sntbsect limnipoundQlDligochaeta
2 198
200 1000
171 7 170003
3620 67339
~Q[eipoundYls msniln~isect Ostracoda
1 4
100 400
859 3434
2715 4434
bimnQpoundytb[s Spa gQ[Qeniy sect21QOi~ sectpoundQttQlsO poundsOsggOi
164 87
2468
1000 1000 1000
140810 74698
2119025
39283 39460
840890
Mean number of organismssample 311 6 Standard deviation 101 1
ill b f 2nean nUll er 0 organIsms 2675398 Standard deviation 8682B8
W= 116 SD= 036 SR= 060 J= 039
A-42
STATION 18 Date 29 August 1984 Depth 30 bull Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samples 10
Total Frequency occurrence
Densi ty 2
(nom )
Taxa number (~ ) x S D
Nematoda 150 1000 128790 28905 Turbellaria 7 400 6010 9096 ~nh imni~Qj Oligochaeta ~~i~2Y~k~~1 ini~CIDgii bih2g~Qb~ Yi(~U2 Bivalvi a
B 145
1 1 2
600 1000
100 100 200
6869 124497
859 859
171 7
677 3 84732
271S 2715 3620
~Q[Qi~yli miDllgni bimn2pound~ih~C sp ~QtQehiY imQUia Harpacticoida
7 7
265 1
500 300
1000 100
6010 601 0
227529 859
8145 10747
139462 2715
sect~QtiQDi ~Q~Q~i~ Chironomid larvae
2471 2
1000 200
2121601 171 7
1063112 3620
Mean number of organismssample 3067 Standard deviation 121 9
2Mean number 0 f organIsms m 2633326 standard deviation 1046718
H = 1 09 SD= 034 SR= 1 04 J= 029
A-43
STATION 58 Date 29 August 1984 Depth 55 111
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (noI 2 ) Total occurrence -----------------
Taxa nUllber (X) X SD
Nemertea 4 400 3434 4434 Nuatoda 64 1000 54950 25016 Turbellaria 9 400 7727 11047 ~Hl~b limli~Q19 Oligochaeta
1 37
100 1000
859 31769
2715 19006
i~Qyh il(~~ bHtlQSlheln Yl Bivalvia
4 4
20
200 300 400
3434 3434
17172
8215 6003
26541 ~e(ijY l bQ~dlH sp
26 1
700 100
22324 859
25662 2715
~Q[QQhil iQ sectjgUell HD Heleidae larvae
418 20
1
1000 800 100
358895 17172
859
129443 12799 271 5
Mean number of organismssample 609 Standard deviation 175
nean num b er 0 f organIsms 1 111 2 522887 Standard deviation 150164
H= 176 SD= 051 SR= 1 30 J= 047
A-44
I I
I
I
STATION SS
Date 29 August 1984 Depth 21 1
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (no2) Total occurrence
Taxa nUllber (X) x S D
Nematoda ISO 1000 128790 37969 Turbellaria 1 100 859 271 5 Oligochaeta 48 1000 41213 16088 ~i~g~sect~~l iQ~~mgi bi~QQg~gb~sect ~i~nsect
10 14
600 600
eSB6 12020
9050 14137
Bivalvia 4 200 3434 7240 ~Q[Q~Yl niQaa Ostracoda
15 7
700 SOO
12879 6010
15806 7069
bmQg~~~b~ SPa 14 800 12020 8295 ~g[gaby mgni sect~g~~Qn ~ngnai Chironomid larvae
IB4 25 9
1000 900 700
157982 21465
7727
35563 16810 6335shy
Mean number of organismssample 481 Standard deviation B6
2Mean number 0 f organlsms m 412987 Standard deviation 74131
H= 24S SD= 074 SR= 1 23 J= 068
A-45
STATION 45 Date 14 September 1984 Depth 61 11
Salinity (bottom) 03 ppt Temperature (bottom) IB4 C No of samples 10
---------------------------------~----------------------------------------
Taxa TotalnUlllDer
Frequency occ~~~ence
Density (no 2) -----X-------sect7B
Nematoda 189 1000 162275 85233 t1tQ SPa
Turbellaria 2 2
200 100
171 7 171 7
3620 5430
~~~nIng limoifQl t1QQQDi~ flQriQ Oligochaeta
5 19
142
400 800
1000
4293 1631 3
121921
6071 12442 30504
~QQifYl mDl~D bimoQpoundt1hgr Spa Cumacea
19 184
2
800 1000 200
1631 3 157982
171 7
130B4 69541 3620
~Q[QnniYm ~~lmQDi Harpacticoida
118 1
1000 100
10131 5 B59
43367 2715
sectfQIIQD fOQgO Chironomid larvae
1780 1
1000 100
1528308 859
673586 2715
Mean number of organismssample 2464 Standard deviation 874
M ean num b er f 20 organlsms 2115590 Standard deviation 750305
H= 151 SD= 046 SR= 1 07 J= 041
A-46
STATION 18 Date 14 September 1984 Depth 21 III
Salinity (bottom) 01 ppt Temperature (botto) 182 C No of samples 10
Frequency DenSity (nom 2 ) Total occurrence ---------------- shy
Taxa nUlDber (i) X SD
Nemertea 1 100 859 271 5 Nematoda 186 1000 159700 44925 Turbellaria 16 400 13738 20717 ~~Dth~~ limni~Ql Oligochaeta
13 55
700 900
11162 47223
9096 30085
~Q~ei~Yl nil~Qi~ 17 900 14596 7069 bimDg~lbg[ Spa b 500 5152 6003 ~Q[Q2niY ~lgQi~ Harpacti coi da
562 2
1000 200
482533 171 7
136766 3620
sectpoundQttQ~Q~ ~n~ni 791 1000 679153 324290
Mean number of organismssample 1649 Standard deviation 447
I 211ean nUll ber 0 f organIsms I 1415831 Standard deviation 384136
H= 179 SD= 064 SR= 084 J= 054
A-47
STATION 58 Date 14 September 1984 Depth 58 III
Salinity (bottom) 01 ppt Temperature (bottom) 191 C No of sampl es 10
-------------------------------------------~------------------------------Frequency Density (nom 2 )
Total occurrence Taxa number eX) X SD
Nemertea 1 100 859 2715 Nematoda 55 1000 47223 18658 Turbellaria 10 500 8586 11448
1 100 859 2715 Oligochaeta 41 1000 35203 17850 ~~iQQ~~gll iu1g[m~i ~Q[Q~Yl nilD bimnQ~Y~h[ Spa ~Q[Q~hiYm lmgui sectpoundQilg1D poundU2D Chironomid larvae
4 10
2 277
23 4
100 500 200
1000 700 300
3434 8586 171 7
237832 19748 3434
10861 11448 3620
50561 21051 6003
Mean number of organismssample 428 Standard deviation 51
M b f 2ean num er 0 organIsms III 367481 Standard deviation 43743
H= 179 SD= 055 SR= 114 J= 052
A-48
I I
STATION SS Date 14 September 1984 Depth 21 II
Salinity (bottom) 01 ppt Temperature (bottom) 190 C No of samples 10
--------------------------------------------------------------------~-----
Frequency Density (no1I2) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 102 1000 87577 39200 Oligochaeta 34 700 29192 31142 ~iQ2Y~y1 int(mgi~ bithQgl~en~ Yi(gDsect ~Q(~i~Y m~DilgDsecti~ bimDQamp~1h(sect sp ~2(QQhiY slmQD 2poundQiiQlsD ~sD~g~nsecti Chironomid larvae
36 18 16 17
100 16
3
1000 600 800 700
1000 800 300
30910 15455 13738 14596 85860 13738 2576
157BO 20953 10078 14621 32126 10861 4147
Mean number of organismssample 342 Standard deviation 97
2Mean nUllber 0 f organlsms m 293641 Standard deviation 83617
H= 262 SD= 079 SR= 095 J= 083
A-49
Appendix B--Sediment particle size and organic content of the Cathlamet Bay
benthic invertebrate sites 13 March through 14 September
1984
iii
1
Station 18a 48 54 57
Survey 1 1 1 1
Month March March March March
Day 13 13 13 13
Particle size (mm) Phib Percent by weight
gt 40 -2 000 000 000
20- 40 -1 000 000 000
10- 20 0 000 009 000
05- 10 1 018 1079 032
025- 050 2 545 7583 2468
0125- 025 3 8731 1225 6783
00625-0125 4 491 037 657
lt0625 (5-12) 216 067 060
Organic Content 160 116 128
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
b Phi= -log2(sediment particle diameter in mm)
B-1
Station 18a 48 54 57
Survey 2 2 2 2
Month April April April April
Day 5 5 5 5
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 003 093 000
05shy 10 1 005 31 75 023
025shy 050 2 087 5904 2368
0125- 025 3 6316 750 7155
00625-0125 4 3056 026 427
lt0625 (5-12) 533 052 028
Organic Content 081 077 065
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-2
Station 45 55 58
Survey 3 3 3 3
Month April April April April
Day 18 18 18 18
Particle size (mm)
gt 40
Phi
-2
Percent by weight
000 000 000
20shy 40 -1 000 000 000
10shy 20 0 005 009 004
05shy 10 1 010 027 013
025shy 050 2 015 095 225
0125- 025 3 097 536 6111
00625-0125 4 453 2821 2205
lt0625 (5-12) 9420 6511 1442
Organic Content 31 42 14
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-3
Station 18a 45 55 58
Survey 4 4 4 4
Month May May May May
Day 4 4 4 4
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 021
05shy 10 1 000 065 063
025shy 050 2 012 370 230
0125- 025 3 091 4099 4696
00625-0125 4 322 3650 3052
lt0625 (5-12) 9575 1810 1939
Organic Content 330 180 160
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-4
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
5
May
17
000
000
005
016
217
5862
2729
1170
100
45 55 58
5 5 5
May May May
17 17 17
Percent by weight
000 000
000 000
005 008
113 031
325 274
1903 5613
2784 2401
4870 1672
240 110
000
000
000
010
020
079
397
9494
390
B-5
Station 18al 45 55 58
Survey 6 6 6 6
Month June June June June
Day 6 6 6 6
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 020
05shy 10 1 005 051 027
025shy 050 2 005 301 1 79
0125- 025 3 074 3189 5404
00625-0125 4 599 4118 2885
lt0625 (5-12) 9317 2332 1485
Organic Content 340 240 150
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-6
Station
Survey
Month
Day
Particle size Cmm) Phi
gt 40 -2
20shy 40 -1
10shy 20 a
05shy 10 1
025shy 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
7
June
18
000
000
005
029
138
3917
4143
1768
180
45
7
June
18
55 58
7 7
June June
18 18
Percent by weight
000
000
000
010
020
080
427
9464
310
000 000
000 000
000 007
011 022
057 190
957 5286
3023 2642
5957 1853
1 70 110
B-7
Station 18al 45 55 58
Survey 8 8 8 8
Month July July July July
Day 2 2 2 2
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 006 002 006
05shy 10 1 006 0l3 023
025shy 050 2 017 088 171
0125- 025 3 074 2712 5365
00625-0125 4 552 3892 3081
lt0625 (5-12) 9345 3294 l354
Organic Content 410 210 160
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-8
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
9
July
17
000
000
003
013
130
4294
4434
1127
130
45
9
July
17
Percent
000
000
000
006
012
051
046
9885
290
55
9
July
17
by weight
000
000
019
048
091
628
3616
5597
030
58
9
July
17
000
000
004
022
158
5017
3148
1650
140
B-9
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18al
10
August
1
45
10
August
1
55
10
August
1
58
10
August
1
Percent by weight
000 000
000 004
001 004
009 018
018 088
098 306
049 2510
9824 7070
000
005
045
763
3604
4495
932
156
100 190 060
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-10
Station 18 45 55 58
Survey 11 11 11 11
Month August August August August
Day 17 17 17 17
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000 000
20- 40 -1 005 000 000 000
10- 20 0 021 003 000 210
05- 10 1 064 009 000 159
025- 050 2 226 027 045 2656
0125- 025 3 3259 131 712 3719
00625-0125 4 4327 195 1737 1159
lt0625 (5-12) 2098 9635 7506 2097
Organic Content 210 300 160 100
Ii I
B-11
Station
Survey
Month
Day
Particle size (mm) Phi
gt40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
12
August
29
000
000
012
046
186
3465
4498
17 93
241
45
12
August
29
55 58
12 12
August August
29 29
Percent by weight
000
000
002
009
026
118
189
9656
540
000 000
000 000
003 011
011 028
055 1013
859 5033
1596 1827
7476 2089
1 70 120
B-12
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
_-------------------- shy
B-13
STATION 18 Date 4 Hay 1984 Depth 34 II
Salinity (bottom) 00 ppt Temperature (bottom) 104 C No of saMples 10
Frequency Density (noI 2 ) occurrence ----------------shy
Taxa (X) X SD
Nemertea 10 600 8SB6 10709 Nuatoda 153 1000 131366 47899 Turbellaria 8 600 6869 6773 ~n1b limnpoundQl Oligochaeta
11 147
700 1000
middot9445 126214
9449 6231 7
~i~g~kXl in1(m~i ~g(2iY OiOi Ostracoda
86 4 1
900 300 100
73840 3434 859
61543 6003 2715
bimoQpoundx1b( sp ~2(QQbiYm mgoiDi ptera adult
3 57
3
300 900 300
2576 48940
2576
4147 21815 4147
Chironomid larvae 4 300 3434 6003 Chironomid pupae 1 100 859 2715
Hean nUMber of orQanismssample 489 Standard deviation 160
b f 2nean nUll er 0 organIsms II 418997 Standard deviation 137721
H= 243 SD= 076 SR= 1 34 J= 066
A-l1
STATION 5B Date 4 Hay 1984 Depth 61 bull Salinity (botto~) 00 ppt Temperature (bottom) 110 C No of suples 10
Frequency Density (nom 2) Total occurrence ---------------- shy
Taxa number (X) X SD
Neertn 41 1000 35203 21206 Nematoda 211 1000 181165 53305 Turbellaria 4 200 3434 7240 Oligochaeta 89 1000 76415 32240 ~i~2~~~11~ iU1(~i~bi1begygny YitQ ~e(biYl ~OiDi OstracDda
4 3
20 1
400 200 BOO 100
3434 2576
17172 859
4434 5795
19829 2715
biue~1bt~ sp ~2(egniY Imeoi sectg11g1O OdD Helei dae larvae
5 32
1 1
400 900 100 100
4293 27475
859 859
6071 18010 2715 2715
Chironomid larvae 7 400 6010 9096
Mean number of organismssample 419 Standard deviation 93
b f 2ean nUll er 0 organIsms m 359753 Standard deviation 79875
H= 221 SD= 068 SR= 138 J= 060
A-12
Frequency Density (nolm 2) occurrence -----------------
Taxa (X) X SD
Nemertea 23 900 1974S 15171 Neutollorpha 1 100 859 271 5 Nellatoda 269 1000 230963 69923 Turbellaria 10 600 8586 991 4 ~~xYnki Q~ampiQ 4 300 3434 6003 ~nb limnipoundQl Oligochaeta
1 79
100 1000
859 67829
2715 40363
~i~Q~kXl io[~i biDe9XQDX ~i[~OBi valvi a
11 3 1
800 300 100
9445 2576 859
6335 4147 271 5
~Q[~poundY mnil~n bimoQampXD[ sp ~Q[QabiY lQO Harpacticoida
18 2
159 1
700 200
1000 100
15455 171 7
135659 859
13904 3620
54272 2715
Chironomid larvae 2 200 171 7 3620 Trichoptera larvae 1 100 859 2715
STATION 55 Date 4 May 1984 Depth 21 m Salinity (bottom) 00 ppt Temperature (bottom) 107 C No of suples 10
Mean number of organismssamples 594 Standard deviation 147
Mean number of organismsm2 501422 Standard deviation 126525
H= 219 aD= 069 SR= 1 63 J= 055
A-13
STATION 45 Date 17 May 1984 Depth 61 m Sal i ni ty (bottom) 01 ppt Temperature (bottom) 121 C No of sampl es 10
Frequency Total occurrence
Taxa nUlllber (7)
NelDertea 1 100 859 2715 Nematoda 163 1000 139952 127996 Polychaeta 1 100 859 2715 ~~~n~h~ imni~Qs Hobsonia florida
2 6
200 600
171 7 5152
3620 4434
Oligochaeta 329 1000 282479 13291 8 ~~lQQYsectk~~12 in~~rmQi 57 900 48940 33142 ~Qr~ipound~2 ffi2niDi 6 500 5152 6003 Ostracoda 5 200 4293 10898 bimDg~yth( SPa 13 600 11162 12176 ~Q(Qebi~m sectQDisect Harpacticaida
2 2
200 100
1717 1717
3620 5430
2poundQttQD poundDQDsectisectDiptera adult
296 1
1000 100
254146 859
172633 271 5
Mean number of organismssample 884 Standard deviation 326
b f I 2nean num er 0 organlss m 759002 Standard deviation 280131
H= 209 SD= 071 SR= 1 33 J= 055
A-14
STATION 18 Date 17 May 1984 Depth 30 m Salinity (bottom) 00 ppt Temperature (bottom) 122 C No of samples 12
Frequency Density (nom2) Total occurrence -----------------
Taxa number (X) X SD
Nematoda 50 833 35775 22815 ~ntb limnipoundQl 3 Oligochaeta 97
250 833
2147 69404
3883 48495
~igQ~~k~ intr~ 27 ~QrQipoundY mnin~i~ 5
667 333
19319 3S7S
19068 5740
Ostracoda 1 83 716 2479 bimnQpound~nr sp 5 ~Q(Q~bY ~mQni S4 ~Q(Q~niY ~QinipoundQ(n 3
333 833 250
3578 60102
2147
5740 43780 3883
fgnQ2Q(i bQ~i 1 sectpoundQtgO poundnQn~i 2 Chironomid larvae 4
83 167 250
716 1431 2862
2479 3342 5592
Mean number of organismssample 235 Standard deviation 116
nean nURl b er 0 f organlslls II 2 201771 Standard devi ati on 99221
H= 236 SD= 075 SR= 1 35 J= 066
A-15
STATION 58 Date 17 May 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) 123 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nemertea 2 100 171 7 5430 Nematoda 75 1000 64395 34404 ~~2Qih~a limQi~Q 2 200 171 7 3620 Oligochaeta 60 1000 51516 33376 ~~igQY~~~12 iQ~[~~gi 2 200 171 7 3620 bitQQ9~Bh~sect Yr~Qsect 3 200 2576 579~
gQ[Qi~Yl ID2Dil~nsectisect Ostracoda
6 6
500 400
5152 5152
6003 8295
binQ~~nr[ sp gg[QQOYm mQQsect sect~QttQn 5n2Q~nsectia Chironomid larvae
2 34
1 1
200 1000
100 100
171 7 29192
859 859
3620 12927 271 5 2715
Mean number of organismssample 194 Standard deviation
2Mean nurn ber 0 f organIsms fA 166568 Standard deviation 56259
H= 225 SD= 072 SR= 1 45 J= 063
A-16
66
STATION 55 Date 17 May 1984 Depth 24 II
Salinity (bottom) 00 ppt Telllperature (bottom) 126 C No of samples 10
Total Frequency occurrence
Taxa nUllber (X) X SD --------------------------------------------------------------~-----------
Nematollorpha 2 200 171 7 3620 Nematoda 63 1000 54092 35297 Oligochaeta 94 1000 80708 44004 ~~iQQY~k~~l iQt~(m~Qi bitnQg~Qh~~ Yi[~Q gQ[QipoundY~ mni~Q~i Ostracoda
10 9 4 2
600 800 300 100
8586 7727 3434 171 7
9050 4874 6003 5430
bimnQ~~ln~[e sp ~Q(QQbiYm mQD ~Q[QQbiYm 2inipoundQ[n~ Chironomid larvae
6 142
3 1
600 1000 200 100
5152 121921
2576 859
4434 50682 5795 2715
Mean number of organismssample 336 Standard deviation 62
2Mean num ber 0 f organisms m 288490 Standard deviation 53421
H= 214 SD= 071 SR= 119 J= 062
A-17
STATION 45 Date 1 June 1984 Depth 61 m Salinity (bottom) 01 ppt Temperature (bottom) 139 C No of samples 10
Total Frequency occurrence
Density (no2)
Taxa nUllber (1) X SD
Nematoda 174 900 149396 132347 Turbellaria 5 200 4293 10898 ~~~QiQ~sect tmQtpoundQ~ ~QQsectQ flQi~sect Oligochaeta ~~iQQysecttygl~ iQl~rm~~i2 ~Q[Qi~~l~ ~~DilgDsectisect Ostracoda
5 20
190 103
12 5
400 900
1000 900
60 (I 400
4293 17172
163134 88436 10303 4293
6071 8095
92563 51524 11304 6071
bimnQpoundytng[ sp ~gQmYsectisect IDg[pound~Qisect ~Q[QQhi~m sectlmQDisect sectpoundQtiQlsectQ pound~Qgsectisect ChironQmid larvae
33 1
10 375
2
900 100 700
1000 200
28334 859
8586 321975
171 7
17196 2715 7010
179201 3620
Mean number of organismssample 935 Standard deviation 254
nurn b 0 f 2lean er organlsms m 802791 Standard deviation 218423
H= 239 SD= 075 SR= 1 22 J= 065
A-18
STATION 18 Date 1 June 1984 Depth 30 AI
Salinity (bottom) 00 ppt Temperature (bottom) 134 C No of samples 11
Frequency Density (no 1m2)
Taxa Total number
occurrence (X)
---------------- shyX SD
Turbellaria 14 636 10928 1157 7 ~~~Qltlg~ ilipoundQ~ Oligochaeta
10 178
727 1000
7805 138937
601 6 67913
~~iQQy~tY~l~ ill~[m~Qi~ 122 636 95227 93619 ~Q[Qipound~ l~i~lsectisect Ostracoda
7 1
455 9 1
5464 78 1
6946 2589
billQylhg[ Spa 16 818 12489 10420 GQ[QQQil HQi~ 139 1000 108496 70934 gQ[Qebi secteiifQ[~ sectQiiQi2 ~Q~sectisect Diptera pupae
1 2 1
9 1 182
11 1
781 1561 781
2589 3473 2589
Chironomid larvae 2 182 1561 3473
Mean number of organismssample 714 Standard deviation 284
nean num b er 0 f organlsms m 2 612728 Standard deviation 244249
H= 232 SD= 075 SR= 1 25 J= 063
A-19
STATION 58 Date 1 June 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 138 C No of samples 10
Frequency Density (noI 2 ) Total occurrence
Taxa number (X) X SD
Nematoda 173 1000 148538 47383 Turbellaria 3 300 2576 4147 Oligochaeta 53 1000 45506 32139 ~giQgY2k~g~ ini~[m~Qi~ bQg91YehY2 Yi[~nsect ~Qr~i~Yl m~nl~n~i
26 1
10
600 100 500
22324 859
8586
3391 2 2715
13424 bimnQpound~Q~[ sp ~Q9~m[Y poundgnitYpoundQlysect ~QtQehiYm ~lQni
4 1
46
200 100
1000
3434 859
39496
8295 2715
22243 Chironomid larvae 1 100 859 271 5
Mean number of organismssample 318 standard deviation 103
M b f I 2ean num er 0 organlsms III 273035 Standard deviation 88842
H = 1 99 SD= 065 SR= 1 08 J= 060
A-20
STATION 55 Date 1 June 1984 Depth 27 m Salinity (bottom) 00 ppt Temp era t u r e (b 0 t tom) 140 C No of samples 10
Frequency Density (nom 2 ) Total occurrence
Taxa nueber (X) X SD
Nematoda 157 1000 134800 69524 Turbellaria 9 400 7727 13696 tlHl~lk ~2~~iQH 1 100 859 2715 Oligochaeta 49 1000 42071 32745 ~~iQQysect~gl~ S[l9sect bHbQghQb~~ Yirl~
10 1
400 100
8586 859
12799 2715
tQ[Qpoundls l2lilUsect bilQHSbg[ sp ~QrQQbil nllQisectHarpacticoida
4 7
134 1
400 500
1000 100
3434 6010
115052 859
4434 7069
44742 271 5
sectpoundQUQlls poundsQgn~sect Chironomid larvae
1 1
100 100
859 859
271 5 2715
Hydracarina 1 100 859 2715
Hean number of organismssample 376 Standard deviation 132
M b f 2ean num er 0 organIsms m 322834 Standard deviation 113127
H= 202 SD= 068 SR= 1 40 J= 055
A-21
STATION 45 Date 18 June 1984 Depth 67 m Salinity (bottom) 01 ppt Temperature (bottom) 149 C No of samples 10
Frequency Density (nom2)
Taxa Total nUllber
occurrence ex) i SD
Nematoda 109 1000 93587 3891 7 Turbell ari a 3 200 2576 5795 ~g~tbg limoipoundQl Q~Qni2 fQ(i~2 Oligochaeta ~gigQ~~Y inl[ggi ~Q[QiSY2 moilo Ostracoda
3 2
194 44
7 3
200 200
1000 1000 200 200
2576 171 7
16656B 37778 6010 2576
5795 3620
118364 36020 12831 5795
bimoQampl~n~[2 sp ~Q[QQbiYm lmgoi Harpacticoida sectpoundQQ1202 pound2022Osect Chironomid larvae
68 1 1
113 2
900 100 100
1000 200
58385 859 859
97022 171 7
97627 2715 2715
73976 3620
Mean number of organismssa_pie 550 Standard deviation 371
Mean nUll ber 0 f organIsms 2II 472230 Standard deviation 318519
H= 242 SD= 077 SR= 1 32 Ja 065
A-22
STATION 18 Date 18 June 1984 Depth 34 m Salinity (bottom) 00 ppt Temperature (bottom) 155 C No of samples 10
Frequency Density (nom 2) Total occurrence ----------------shy
Taxa nUlber (Z) X SD
Neutoda 291 1000 249853 138826 Turbellaria 1 100 859 2715 ~~n~~nki~ sectQ~~iQ~2 ~g~ntbg2 limni~Q9 Oligochaeta
1 3
123
100 300
1000
859 2576
105608
271 5 4147
48240 ~~igQY~~~~9 int~(mgii ~Q[~i~~~ mini~ni bimnQ~ylbg(~ Spa
67 6 5
1000 500 400
57526 5152 4293
40485 6003 6071
~Q(QebiYm ~imQnisect Harpacticoida
80 2
1000 200
68688 171 7
41276 3620
sect~QttQini ~2nig~n~i Chironomid larvae
2 4
200 300
171 7 3434
3620 6003
Mean number of organismssample 585 Standard deviation 194
I 2Mean urn b er 0 f organIsms m 502281 Standard deviation 166943
H= 203 SD= 068 SR= 1 20 J= 057
A-23
STATI ON 58 Date 18 June 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (noI 2) Total occurrence
TaKa number (X) X SD
Nellertea 2 100 1717 5430 Nematoda 160 1000 137376 6361 1 Turbellaria 4 400 3434 4434 Oligochaeta 36 1000 3091 0 14705 ~iQQYik~ Q1rQ 4 300 3434 6003 bitnQgl~ebysect YrDsect ~Q[QiY~ ~~nni biQQpoundY1h[ sp ~Q[Qeng ~ilQD Chironomid larvae
3 1 3
61 1
300 100 300
1000 100
2576 859
2576 52375
859
4147 2715 4147
1428 1 2715
Chironollid pupae 1 100 859 271 5
Mean number of organismssample 276 standard deviation 72
nean nurn b er 0 f organIsms I 2 236974 Standard deviation 61410
H = 1 78 SD= 060 SR= 1 23 J= 051
A-24
STATION 55 Date 18 June 1984 Depth 18 m Salinity (bottom)1 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (no 1m2) occurrence
Taxa (X) X SD
Nematoda 160 1000 137376 43967 Turbellaria 1 100 859 271 5 Oligochaeta 61 1000 52375 31985 ~~iQQY~kY~~ int~[mQi~ ~Q[Qipound~l~ m~nini~ biIDnQ~Ylb[s sp
3 3 3
300 300 300
2576 2576 2576
4147 4147 4147
~Q[Q~bi~ ~slIDQni~ Chironomid larvae
85 6
1000 600
72981 5152
34165 4434
Mean number of organismssample 322 Standard deviation 75
2Mean number 0 f organIsms m 276469 Standard deviation 64099
H= 178 5D= 065 SR= 0B4 J= 059
A-25
Frequency Density (no2) occurrence -----------------
Taxa (7) X SD
Nematoda 104 1000 89294 47409 Turbell ar i a 1 100 859 2715 ~~~nQ~sect imni~Q~ tjQQsectQlis flQig~ Oligochaeta
2 1
297
100 100
1000
171 7 859
255004
5430 271 5
146273 ~~i~QYsect~Y~lls ilr2is gQrQi~y~ IDDilDia
24 4
600 300
20606 3434
27212 6003
Ostracoda 2 200 171 7 3620 biDQSy~b~C~ sp M~QYsectisect m~r~~Qi ~QrQeniy QD Harpacticoida
157 1 1 1
900 100 100 100
134800 859 859 859
73197 2715 2715 2715
sectpoundQttQDs SsDQD 113 900 97022 61656
STATION 45 Date 2 July 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) No of samples 10
172 C
Mean number of organismssample 708 Standard deviation 339
M ean num b er f 20 organisms 607889 Standard deviation 290B22
H= 216 SD= 073 SR= 1 27 J= 058
1-26
STATION 18 Date 2 July 1984 Depth 24 WI
Sal inity (bottom) 00 ppt Temperature (bottom) 172 C No of samples 10
--------------------------------~-----------------------------------------Frequency Density (nom2)
Total occurrence Taxa number (7) X SD
Nematoda 202 1000 173437 113532 ~~~nih~sect mnpoundQ~ Oligochleta
4 102
400 1000
3434 87577
4434 54873
~~igQYsect~Y~12 inl~rmgi2 ~Q[~poundYl~ m~ni~nsectisect bimnQpoundylh~[~ Spa
115 4
15
900 300 900
98739 3434
12879
100720 6003 9274
~Q[QQniY~ sect~QDi~ 55 900 47223 40525 Harpacticoida 1 100 859 2715 sectpoundQiiQlD SDg~DEisect Chironomid larvae
2 6
200 400
1717 5152
3620 7240
Hymenoptera 1 100 859 2715 Hydracarina 1 100 859 2715
Mean number of organismssample 508 Standard deviation 253
2Mean num ber 0 f organIsms m 436169 Standard deviation 217580
H= 225 SD= 074 SR= 1 22 J= 063
A-27
STATION 58 Date 2 July 1984 Depth 58 1
Salinity (bottom) 00 ppt Temperature (bottom) IBO C No of samples 10
Frequency Density (no2) Total occurrence
Taxa number ltX) i SD
Nematoda 151 1000 129649 42729 Turbellaria 1 100 859 2715 01 i gochaeta 41 1000 35203 22698 ~~i~e~~~ int~~m~~ 3 200 2576 5795 btbQglYRhY~ Yir~n~ ~e~~ampy mni~niii bimQeamp~tb~ sp ~e~eQhiY ~mQni Chironomid larvae
1 4 2
68 1
100 300 200
1000 100
859 3434 171 7
58385 859
271 5 6003 3620
1557 1 2715
Mean number of organisassample 272 Standard deviation
I 2Mean num ber 0 f organIsms I 233539 Standard deviation 62546
H = 1 69 SD= 061 SR= 099 J= 053
A-28
73
STATION 55 Date 2 July 1984 Depth 15 III
Salinity (bottom) 00 ppt Temperature (bottom) 182 C No of samples 10
Frequency Density (nom2) occurrence
Taxa (X) X SD
Nematoda 184 1()00 157982 5264B Turbellaria 1 100 859 271 5 Oligochaeta ~~iQQ~sect~Y~ll~ n~[~~Qi~ bitnggYQDYsect Yi[~nsect ~QrQipoundM2 m2ni~nsectisect bimnQpoundYn~[2 sp ~QrQQhiM Qni Harpacticoida
91 2 1 B 2
96 2
1000 200 100 500 200
1000 200
78133 171 7 859
6869 171 7
82426 1111
26058 3620 271 5 1890 3620shy
25980 3620
ChirDnomid larvae 5 400 4293 6071 Chironolllid pupae 1 100 859 2715
Mean number of organismssample 393 Standard deviation 53
2t1ean nUllber Df organlsms III 337430 Standard deviatiDn 45080
H= 187 SD= 067 SR= 116 J= 054
A-29
STATION 45 Date 17 Jul y 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (X) X SD
Nematoda 215 1000 184599 45837 ~~n~b~~ imDipoundQ Qe~Qni fllHi2
3 1
300 100
2576 859
4147 2715
Oligochaeta 305 1000 261873 147955 ~~iQQY~k~ in~rm~2i ~Qr~ipoundYl IDniln~i~ Ostracoda
17 1 2
500 100 200
14590 859
171 7
22554 2715 3620
bmnQpound~ihr sp ~QCQQhiY ~lQD~
176 1
1000 100
151114 859
57125 2715
Harpacticoida 4 300 3434 6003 sectQ~~Qn poundnQnai~ Chironomid larvae
91 5
1000 400
78133 4293
61310 6071
Mean number of organismssample 821 Standard deviation 275
M b f 2ean num er 0 organlsms m 70491 1 Standard deviation 236369
H= 215 SD= 073 SR= 114 J= 060
A-30
STATION 18 Date 17 Jul y 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom 203 C No of samples 10
Frequency Density (001 2 Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 339 1000 291065 119140 Turbellaria 3 200 2576 5795 ~~2~b~~ limnipoundQ12Oligochaeta
4 18S
300 1000
3434 161417
6003 89393
~~iQQy~~~ls in~(ID~Qi bim~Qampy~bg(2 Spa
34 16
800 700
29192 1373B
22967 15252
~g(gebi~m ~21mQni2 Harpacticoida
52 3
1000 200
44647 2576
25212 5795
2ampQ11Q1202 ampS02Qg~2i2 Chironomid larvae
18 10
700 700
15455 8586
13904 701 0
Mean number of organi$mssample 667 Standard deviation IBB
H ean nurn b er 1 20 f organIsms m 572686 Standard deviation 161750
H = 1 99 SD= 065 SR= 090 J= 060
A-31
STATION 58 Date 17 July 1984 Depth 55 AI
Salinity (bottom) 00 ppt Temperature (bottom) 197 C No of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nellatoda 173 1000 14853B 66390 Turbellaria 1 100 859 271 5 ~~~n~hu ini~QA Oligochaeta
1 46
100 1000
859 39496
2715 26293
~gipoundQy~~ygl2 in~rJg~i~ b1nQglYRnY~ Yi( Bivalvia
6 2 1
400 200 100
5152 1717 859
8295 3620 271 5
ei~ IDnH~n~i~ 2 200 171 7 3620 Ostracoda 1 100 959 271 5 biIDQHlh~( Spa ~Q(QRbim ~21Qnisect Diptera pupae
1 94
1
100 1000 100
859 80708
859
2715 35332 2715
Heleidae 1arvae 5 500 4293 4525 Chironomid larvae 1 100 859 2715
Mean number of organismssample 335 Standard deviatiDn 113
Mean number of organismsRI2 287631 Standard deviation 97413
H= 1 86 SO= 064 SR= 155 J= 049
A-32
STATION 55 Date 17 July 1984 Depth 18 m Sali nity (bottom) 00 ppt TeAlperature (bottom) 199 C No of samples 10
Frequency Density (nom2 ) occurrence
Taxa (X) x S D
Nematoda 61 1000 52375 33972 Turbellaria 1 100 859 2715 Oligochaeta 24 900 20606 11590 ~~i2QY~k~~1 iOi[2 bimDQ~xlb~r sp ~Q[QQhi~ sectgni~ Chironomid larvae
3 1
38 3
200 100
1000 300
2576 859
32627 2576
5795 2715
19326 4147
Mean number of organismssample 131 standard deviation 54
M b f 2ean num er 0 organIsms 112477 Standard deviation 46757
H= 184 SD= 066 SR= 085 J= 065
bull
A-33
STATION 45 Date 1 August 1984 Depth 58 m Sal i nity (bottoll) 03 ppt Temperature (bottom) 203 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa nUllber (X) X SD
Nematoda 145 1000 124417 52344 Turbellaria 1 100 859 2715 Mmth~sect iHpoundQ~ Q~~Qi ilQ[i9Oligochaeta
5 3
196
500 300
1000
4293 2576
168286
4525 4147
91064 ~igQYsect~~li int9i Ostracoda
2 3
100 300
171 7 2576
5430 4147
bimnQpoundtl sp ~Q[Q2hiY sectlQni~
240 6
1000 600
206064 5152
73526 4434
sectpoundQtQl poundngnai~Helei dae larvae
1862 1
1000 100
1598713 859
966134 271 ~
Mean number of organismssample 2464 Standard deviation 1156
211 ean num ber 0 f organIsms II 2115590 Standard deviation 992518
H= 124 SD= 041 SR= 089 J= 036
A-34
STATION 1S Date 1 August 1984 Depth 24 II
Salinity (bottom) 00 ppt Temperature (bottom) 198 C No of samp I es 10
Frequency Density (nom2) occurrence ---------------- shy
Taxa (X) X S D
Nuertea 1 100 859 2715 Nellatolllorpha 1 100 859 2715 Nematoda 248 1000 212933 108288 Turbellaria 4 400 3434 4434 ~untb~la Hli~g Oligochaeta
4 206
400 1000
3434 176872
4434 75309
~~igQYli~dli i[t~(gi~ ~QtQpound l binQ~ybt2 sp ~2l~bi Q[i ~2tlgtQ(ila tirisect sectpoundQtel poundl9lla Chironomid larvae
10 1
20 205
1 574
9
500 100 800
1000 100
1000 400
8586 859
17172 176013
859 492836
7727
10709 271 5
14021 48104
271 5 150531
13696
Mean number of organismssample 1284 Standard deviation 290
M b f I 2ean nurn er 0 organIsms III 1102442 Standard deviation 2488B5
H= 211 SD= 071 SR= 1 16 J= 057
A-35
STATION 58 Date 1 August 1984 Depth 55 m Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samp 1es 10
Frequency Densi ty _ ltnom2 ) Total occurrence
Taxa number (7) X SD
Nemertea 1 100 859 2715 Nematoda 22 900 18889 15036 Turbellaria 1 100 859 2715 Oligochaeta 19 700 16313 17385 biiQQgl~QhY~ YiCg~~ 2 200 171 7 3620 ~Q[~i~~l~ m2nil~n2i2 ~Q[QehiYm ~lmQni2
4 164
300 1000
3434 140810
6003 103048
Heleidae larvae 8 500 6869 8868
Mean number of organismssample 221 Standard deviation 111
I 2Mean num ber 0 f organIsms m 189751 Standard deviation 95391
H = L 37 SD= 043 SR= 090 J= 046
A-36
STATION 55 Date 1 August 1984 Depth 15 m Salinity (bottoll) 01 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (i ) X SD
Nemertea 1 100 859 2715 Neutoda 122 1000 104749 7394B Turbellaria 4 300 3434 6003 ~~~~~nt~ secte~poundQa~ Oligochaeta
1 118
100 1000
859 101315
2715 61223
~giQgY~k~~l iot~[m~Qi btbQg~2b~ Y[O ~grQipound~ ~nl~ni b~ngpound~tb~[ Spa
3 1 5 1
200 100 500 100
2576 859
4293 859
5795 2715 4525 2715
~Q[QebiYm ~mQoi sect~QttQ~ ~OQOi Heleidae larvae
42 2 2
800 200 100
36061 171 7 171 7
21341 3620 5430
Chironomid larvae 4 400 3434 4434
Mean number of organismssapIe 306 Standard deviation 169
M b f I 2ean nurn er 0 organIsms m 262732 Standard deviation 145101
H = 198 SD= 067 SR= 1 45 J= 054
A-37
~-- --------------~~-------------
STATION 45 Date 17 August 1984 Depth 61 1
Salinity (bottom) 10 ppt Temperature (bottom) 210 C No of samp 1es 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nematoda 240 1000 206064 130213 ~~h~sect limQ tjQ~~Hi~ fQ[i~~ Oligochaeta
31 2
245
400 100
1000
26617 1717
210357
75228 5430
121374 babgglYQbl~ Yi[~sect 1 100 859 2715 Ostracoda 1 100 859 271 5 biQ~xtb~[ Spa ~~Q~~isect ~[pound~Qisect ~Qgebi HQOi
333 2
143
1000 200
1000
28591 4 171 7
1227BO
106553 3620
106860 sectpoundQUg~ poundg~nsectisect 1738 1000 1492247 68441 7
Mean number of organismssample 2736 Standard deviation 944
M b f I 2ean num er 0 organlslls m 2349130 Standard deviation 810600
H= 172 SD= 056 SR= 079 J= 052
A-38
STATION 18 Date 17 August 1984 Depth 27 III
Sal i ni ty (botto) 01 ppt Temperature (bottom) 214 C No of samples 10
Frequency Density (nom 2 ) occurrence
Taxa (X) X SD
Nematoda 186 1000 159700 62468 ~tgt SPa 2 100 171 7 5430 Turbellaria 8 400 6869 8868 ~~ntbg2 imnipoundQ 12 700 10303 11304 Oligochaeta 283 1000 242984 90509 ~~iQQY~~Y~lls inlgtmggisBivalvia
4 1
400 100
3434 859
4434 271 5
~Qt~i~Y nilnsectisectbimnQpoundttbg[s SPa ~QtQQbi~ islmQDi2
1 17
286
100 900
1000
859 14596
245560
271 5 10747 83461
sectpoundetteln poundDsggnsectisect Chironomid larvae
526 4
1000 3Q0
451624 3434
179610 6003
Mean number of organismssapIe 1330 Standard deviation 162
Mean nurn ber I 20 f organIsms m 1141938 Standard deviation 139389
H= 214 SD= 073 SR= 1 06 J= 060
A-39
STATION 58 Date 17 August 1984 Depth 55 II
Salinity (bottom) 01 ppt Temperature (bottom) 220 C ND of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (7) x S D
Nematoda 68 1000 58385 27689 Turbellar i a 4 200 3434 8295 Oligochaeta 19 800 16313 13084 ~~i~Q~k~~l~ in~~[m~i bitUQ9Y2bYa Yi[~na Bivalvia
3 3 4
300 300 300
2576 2576 3434
4147 4147 6003
gQ[QipoundYl~ mnilDa 1 100 859 2715 binQpoundY~[ sp gQ[Q2UY a~mgnia sect~Qtgl~n ~n~~ni
2 338
6
100 1000 400
171 7 290207
5152
5430 56636 7240
Mean number of organismssample 448 Standard deviation 72
W b f 2lean num er 0 organlsms II 384653 Standard deviation 61988
H = 1 27 SD= 041 SR= 1 02 J= 038
A-40
STATION 55 Date 17 August 1984 Depth 18 m Salinity (bottom) 00 ppt Temperature (bottol) 223 C No of samples 10
Frequency Density (nom 2 ) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 291 1000 249853 118104 Turbellaria 1 100 859 2715 M~ntb~ mni~Q Oligochaeta
1 47
100 1000
859 40354
2715 28347
~~iQQ~sectkY~ll int~[m~gi bitbQQ1YSDY Yi(gn Bivalvia
25 12
6
900 500 400
21465 10303 5152
1231 0 18459 7240
~Q~2ipoundY mnil~ni Ostracoda
11 8
400 600
9445 6869
12442 6773
bmnQpoundYb~r~ SPa 52 1000 44647 19746 ~QrQsbY lmgnisectsQiielo snQ~ni~ Chironomid larvae
43 5
15
1000 400 BOO
36920 4293
12879
21436 6071 8344
Mean number of organismssample 517 Standard deviation 174
M b f I 2ean num er 0 organlsms m 443896 Standard deviation 149431
W = 228 SD= 065 SR= 1 33 J= 062
A-41
STATION 45 Date 29 August 1984 Depth 55 III
Salinity (bottom) 07 ppt Temperature (bottom) 199 C No of samples 10
Frequency Density (noI 2) Total occurrence
Taxa number (X) X SD
Nematoda 192 1000 164851 98380 ~sntbsect limnipoundQlDligochaeta
2 198
200 1000
171 7 170003
3620 67339
~Q[eipoundYls msniln~isect Ostracoda
1 4
100 400
859 3434
2715 4434
bimnQpoundytb[s Spa gQ[Qeniy sect21QOi~ sectpoundQttQlsO poundsOsggOi
164 87
2468
1000 1000 1000
140810 74698
2119025
39283 39460
840890
Mean number of organismssample 311 6 Standard deviation 101 1
ill b f 2nean nUll er 0 organIsms 2675398 Standard deviation 8682B8
W= 116 SD= 036 SR= 060 J= 039
A-42
STATION 18 Date 29 August 1984 Depth 30 bull Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samples 10
Total Frequency occurrence
Densi ty 2
(nom )
Taxa number (~ ) x S D
Nematoda 150 1000 128790 28905 Turbellaria 7 400 6010 9096 ~nh imni~Qj Oligochaeta ~~i~2Y~k~~1 ini~CIDgii bih2g~Qb~ Yi(~U2 Bivalvi a
B 145
1 1 2
600 1000
100 100 200
6869 124497
859 859
171 7
677 3 84732
271S 2715 3620
~Q[Qi~yli miDllgni bimn2pound~ih~C sp ~QtQehiY imQUia Harpacticoida
7 7
265 1
500 300
1000 100
6010 601 0
227529 859
8145 10747
139462 2715
sect~QtiQDi ~Q~Q~i~ Chironomid larvae
2471 2
1000 200
2121601 171 7
1063112 3620
Mean number of organismssample 3067 Standard deviation 121 9
2Mean number 0 f organIsms m 2633326 standard deviation 1046718
H = 1 09 SD= 034 SR= 1 04 J= 029
A-43
STATION 58 Date 29 August 1984 Depth 55 111
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (noI 2 ) Total occurrence -----------------
Taxa nUllber (X) X SD
Nemertea 4 400 3434 4434 Nuatoda 64 1000 54950 25016 Turbellaria 9 400 7727 11047 ~Hl~b limli~Q19 Oligochaeta
1 37
100 1000
859 31769
2715 19006
i~Qyh il(~~ bHtlQSlheln Yl Bivalvia
4 4
20
200 300 400
3434 3434
17172
8215 6003
26541 ~e(ijY l bQ~dlH sp
26 1
700 100
22324 859
25662 2715
~Q[QQhil iQ sectjgUell HD Heleidae larvae
418 20
1
1000 800 100
358895 17172
859
129443 12799 271 5
Mean number of organismssample 609 Standard deviation 175
nean num b er 0 f organIsms 1 111 2 522887 Standard deviation 150164
H= 176 SD= 051 SR= 1 30 J= 047
A-44
I I
I
I
STATION SS
Date 29 August 1984 Depth 21 1
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (no2) Total occurrence
Taxa nUllber (X) x S D
Nematoda ISO 1000 128790 37969 Turbellaria 1 100 859 271 5 Oligochaeta 48 1000 41213 16088 ~i~g~sect~~l iQ~~mgi bi~QQg~gb~sect ~i~nsect
10 14
600 600
eSB6 12020
9050 14137
Bivalvia 4 200 3434 7240 ~Q[Q~Yl niQaa Ostracoda
15 7
700 SOO
12879 6010
15806 7069
bmQg~~~b~ SPa 14 800 12020 8295 ~g[gaby mgni sect~g~~Qn ~ngnai Chironomid larvae
IB4 25 9
1000 900 700
157982 21465
7727
35563 16810 6335shy
Mean number of organismssample 481 Standard deviation B6
2Mean number 0 f organlsms m 412987 Standard deviation 74131
H= 24S SD= 074 SR= 1 23 J= 068
A-45
STATION 45 Date 14 September 1984 Depth 61 11
Salinity (bottom) 03 ppt Temperature (bottom) IB4 C No of samples 10
---------------------------------~----------------------------------------
Taxa TotalnUlllDer
Frequency occ~~~ence
Density (no 2) -----X-------sect7B
Nematoda 189 1000 162275 85233 t1tQ SPa
Turbellaria 2 2
200 100
171 7 171 7
3620 5430
~~~nIng limoifQl t1QQQDi~ flQriQ Oligochaeta
5 19
142
400 800
1000
4293 1631 3
121921
6071 12442 30504
~QQifYl mDl~D bimoQpoundt1hgr Spa Cumacea
19 184
2
800 1000 200
1631 3 157982
171 7
130B4 69541 3620
~Q[QnniYm ~~lmQDi Harpacticoida
118 1
1000 100
10131 5 B59
43367 2715
sectfQIIQD fOQgO Chironomid larvae
1780 1
1000 100
1528308 859
673586 2715
Mean number of organismssample 2464 Standard deviation 874
M ean num b er f 20 organlsms 2115590 Standard deviation 750305
H= 151 SD= 046 SR= 1 07 J= 041
A-46
STATION 18 Date 14 September 1984 Depth 21 III
Salinity (bottom) 01 ppt Temperature (botto) 182 C No of samples 10
Frequency DenSity (nom 2 ) Total occurrence ---------------- shy
Taxa nUlDber (i) X SD
Nemertea 1 100 859 271 5 Nematoda 186 1000 159700 44925 Turbellaria 16 400 13738 20717 ~~Dth~~ limni~Ql Oligochaeta
13 55
700 900
11162 47223
9096 30085
~Q~ei~Yl nil~Qi~ 17 900 14596 7069 bimDg~lbg[ Spa b 500 5152 6003 ~Q[Q2niY ~lgQi~ Harpacti coi da
562 2
1000 200
482533 171 7
136766 3620
sectpoundQttQ~Q~ ~n~ni 791 1000 679153 324290
Mean number of organismssample 1649 Standard deviation 447
I 211ean nUll ber 0 f organIsms I 1415831 Standard deviation 384136
H= 179 SD= 064 SR= 084 J= 054
A-47
STATION 58 Date 14 September 1984 Depth 58 III
Salinity (bottom) 01 ppt Temperature (bottom) 191 C No of sampl es 10
-------------------------------------------~------------------------------Frequency Density (nom 2 )
Total occurrence Taxa number eX) X SD
Nemertea 1 100 859 2715 Nematoda 55 1000 47223 18658 Turbellaria 10 500 8586 11448
1 100 859 2715 Oligochaeta 41 1000 35203 17850 ~~iQQ~~gll iu1g[m~i ~Q[Q~Yl nilD bimnQ~Y~h[ Spa ~Q[Q~hiYm lmgui sectpoundQilg1D poundU2D Chironomid larvae
4 10
2 277
23 4
100 500 200
1000 700 300
3434 8586 171 7
237832 19748 3434
10861 11448 3620
50561 21051 6003
Mean number of organismssample 428 Standard deviation 51
M b f 2ean num er 0 organIsms III 367481 Standard deviation 43743
H= 179 SD= 055 SR= 114 J= 052
A-48
I I
STATION SS Date 14 September 1984 Depth 21 II
Salinity (bottom) 01 ppt Temperature (bottom) 190 C No of samples 10
--------------------------------------------------------------------~-----
Frequency Density (no1I2) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 102 1000 87577 39200 Oligochaeta 34 700 29192 31142 ~iQ2Y~y1 int(mgi~ bithQgl~en~ Yi(gDsect ~Q(~i~Y m~DilgDsecti~ bimDQamp~1h(sect sp ~2(QQhiY slmQD 2poundQiiQlsD ~sD~g~nsecti Chironomid larvae
36 18 16 17
100 16
3
1000 600 800 700
1000 800 300
30910 15455 13738 14596 85860 13738 2576
157BO 20953 10078 14621 32126 10861 4147
Mean number of organismssample 342 Standard deviation 97
2Mean nUllber 0 f organlsms m 293641 Standard deviation 83617
H= 262 SD= 079 SR= 095 J= 083
A-49
Appendix B--Sediment particle size and organic content of the Cathlamet Bay
benthic invertebrate sites 13 March through 14 September
1984
iii
1
Station 18a 48 54 57
Survey 1 1 1 1
Month March March March March
Day 13 13 13 13
Particle size (mm) Phib Percent by weight
gt 40 -2 000 000 000
20- 40 -1 000 000 000
10- 20 0 000 009 000
05- 10 1 018 1079 032
025- 050 2 545 7583 2468
0125- 025 3 8731 1225 6783
00625-0125 4 491 037 657
lt0625 (5-12) 216 067 060
Organic Content 160 116 128
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
b Phi= -log2(sediment particle diameter in mm)
B-1
Station 18a 48 54 57
Survey 2 2 2 2
Month April April April April
Day 5 5 5 5
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 003 093 000
05shy 10 1 005 31 75 023
025shy 050 2 087 5904 2368
0125- 025 3 6316 750 7155
00625-0125 4 3056 026 427
lt0625 (5-12) 533 052 028
Organic Content 081 077 065
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-2
Station 45 55 58
Survey 3 3 3 3
Month April April April April
Day 18 18 18 18
Particle size (mm)
gt 40
Phi
-2
Percent by weight
000 000 000
20shy 40 -1 000 000 000
10shy 20 0 005 009 004
05shy 10 1 010 027 013
025shy 050 2 015 095 225
0125- 025 3 097 536 6111
00625-0125 4 453 2821 2205
lt0625 (5-12) 9420 6511 1442
Organic Content 31 42 14
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-3
Station 18a 45 55 58
Survey 4 4 4 4
Month May May May May
Day 4 4 4 4
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 021
05shy 10 1 000 065 063
025shy 050 2 012 370 230
0125- 025 3 091 4099 4696
00625-0125 4 322 3650 3052
lt0625 (5-12) 9575 1810 1939
Organic Content 330 180 160
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-4
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
5
May
17
000
000
005
016
217
5862
2729
1170
100
45 55 58
5 5 5
May May May
17 17 17
Percent by weight
000 000
000 000
005 008
113 031
325 274
1903 5613
2784 2401
4870 1672
240 110
000
000
000
010
020
079
397
9494
390
B-5
Station 18al 45 55 58
Survey 6 6 6 6
Month June June June June
Day 6 6 6 6
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 020
05shy 10 1 005 051 027
025shy 050 2 005 301 1 79
0125- 025 3 074 3189 5404
00625-0125 4 599 4118 2885
lt0625 (5-12) 9317 2332 1485
Organic Content 340 240 150
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-6
Station
Survey
Month
Day
Particle size Cmm) Phi
gt 40 -2
20shy 40 -1
10shy 20 a
05shy 10 1
025shy 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
7
June
18
000
000
005
029
138
3917
4143
1768
180
45
7
June
18
55 58
7 7
June June
18 18
Percent by weight
000
000
000
010
020
080
427
9464
310
000 000
000 000
000 007
011 022
057 190
957 5286
3023 2642
5957 1853
1 70 110
B-7
Station 18al 45 55 58
Survey 8 8 8 8
Month July July July July
Day 2 2 2 2
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 006 002 006
05shy 10 1 006 0l3 023
025shy 050 2 017 088 171
0125- 025 3 074 2712 5365
00625-0125 4 552 3892 3081
lt0625 (5-12) 9345 3294 l354
Organic Content 410 210 160
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-8
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
9
July
17
000
000
003
013
130
4294
4434
1127
130
45
9
July
17
Percent
000
000
000
006
012
051
046
9885
290
55
9
July
17
by weight
000
000
019
048
091
628
3616
5597
030
58
9
July
17
000
000
004
022
158
5017
3148
1650
140
B-9
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18al
10
August
1
45
10
August
1
55
10
August
1
58
10
August
1
Percent by weight
000 000
000 004
001 004
009 018
018 088
098 306
049 2510
9824 7070
000
005
045
763
3604
4495
932
156
100 190 060
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-10
Station 18 45 55 58
Survey 11 11 11 11
Month August August August August
Day 17 17 17 17
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000 000
20- 40 -1 005 000 000 000
10- 20 0 021 003 000 210
05- 10 1 064 009 000 159
025- 050 2 226 027 045 2656
0125- 025 3 3259 131 712 3719
00625-0125 4 4327 195 1737 1159
lt0625 (5-12) 2098 9635 7506 2097
Organic Content 210 300 160 100
Ii I
B-11
Station
Survey
Month
Day
Particle size (mm) Phi
gt40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
12
August
29
000
000
012
046
186
3465
4498
17 93
241
45
12
August
29
55 58
12 12
August August
29 29
Percent by weight
000
000
002
009
026
118
189
9656
540
000 000
000 000
003 011
011 028
055 1013
859 5033
1596 1827
7476 2089
1 70 120
B-12
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
_-------------------- shy
B-13
STATION 5B Date 4 Hay 1984 Depth 61 bull Salinity (botto~) 00 ppt Temperature (bottom) 110 C No of suples 10
Frequency Density (nom 2) Total occurrence ---------------- shy
Taxa number (X) X SD
Neertn 41 1000 35203 21206 Nematoda 211 1000 181165 53305 Turbellaria 4 200 3434 7240 Oligochaeta 89 1000 76415 32240 ~i~2~~~11~ iU1(~i~bi1begygny YitQ ~e(biYl ~OiDi OstracDda
4 3
20 1
400 200 BOO 100
3434 2576
17172 859
4434 5795
19829 2715
biue~1bt~ sp ~2(egniY Imeoi sectg11g1O OdD Helei dae larvae
5 32
1 1
400 900 100 100
4293 27475
859 859
6071 18010 2715 2715
Chironomid larvae 7 400 6010 9096
Mean number of organismssample 419 Standard deviation 93
b f 2ean nUll er 0 organIsms m 359753 Standard deviation 79875
H= 221 SD= 068 SR= 138 J= 060
A-12
Frequency Density (nolm 2) occurrence -----------------
Taxa (X) X SD
Nemertea 23 900 1974S 15171 Neutollorpha 1 100 859 271 5 Nellatoda 269 1000 230963 69923 Turbellaria 10 600 8586 991 4 ~~xYnki Q~ampiQ 4 300 3434 6003 ~nb limnipoundQl Oligochaeta
1 79
100 1000
859 67829
2715 40363
~i~Q~kXl io[~i biDe9XQDX ~i[~OBi valvi a
11 3 1
800 300 100
9445 2576 859
6335 4147 271 5
~Q[~poundY mnil~n bimoQampXD[ sp ~Q[QabiY lQO Harpacticoida
18 2
159 1
700 200
1000 100
15455 171 7
135659 859
13904 3620
54272 2715
Chironomid larvae 2 200 171 7 3620 Trichoptera larvae 1 100 859 2715
STATION 55 Date 4 May 1984 Depth 21 m Salinity (bottom) 00 ppt Temperature (bottom) 107 C No of suples 10
Mean number of organismssamples 594 Standard deviation 147
Mean number of organismsm2 501422 Standard deviation 126525
H= 219 aD= 069 SR= 1 63 J= 055
A-13
STATION 45 Date 17 May 1984 Depth 61 m Sal i ni ty (bottom) 01 ppt Temperature (bottom) 121 C No of sampl es 10
Frequency Total occurrence
Taxa nUlllber (7)
NelDertea 1 100 859 2715 Nematoda 163 1000 139952 127996 Polychaeta 1 100 859 2715 ~~~n~h~ imni~Qs Hobsonia florida
2 6
200 600
171 7 5152
3620 4434
Oligochaeta 329 1000 282479 13291 8 ~~lQQYsectk~~12 in~~rmQi 57 900 48940 33142 ~Qr~ipound~2 ffi2niDi 6 500 5152 6003 Ostracoda 5 200 4293 10898 bimDg~yth( SPa 13 600 11162 12176 ~Q(Qebi~m sectQDisect Harpacticaida
2 2
200 100
1717 1717
3620 5430
2poundQttQD poundDQDsectisectDiptera adult
296 1
1000 100
254146 859
172633 271 5
Mean number of organismssample 884 Standard deviation 326
b f I 2nean num er 0 organlss m 759002 Standard deviation 280131
H= 209 SD= 071 SR= 1 33 J= 055
A-14
STATION 18 Date 17 May 1984 Depth 30 m Salinity (bottom) 00 ppt Temperature (bottom) 122 C No of samples 12
Frequency Density (nom2) Total occurrence -----------------
Taxa number (X) X SD
Nematoda 50 833 35775 22815 ~ntb limnipoundQl 3 Oligochaeta 97
250 833
2147 69404
3883 48495
~igQ~~k~ intr~ 27 ~QrQipoundY mnin~i~ 5
667 333
19319 3S7S
19068 5740
Ostracoda 1 83 716 2479 bimnQpound~nr sp 5 ~Q(Q~bY ~mQni S4 ~Q(Q~niY ~QinipoundQ(n 3
333 833 250
3578 60102
2147
5740 43780 3883
fgnQ2Q(i bQ~i 1 sectpoundQtgO poundnQn~i 2 Chironomid larvae 4
83 167 250
716 1431 2862
2479 3342 5592
Mean number of organismssample 235 Standard deviation 116
nean nURl b er 0 f organlslls II 2 201771 Standard devi ati on 99221
H= 236 SD= 075 SR= 1 35 J= 066
A-15
STATION 58 Date 17 May 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) 123 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nemertea 2 100 171 7 5430 Nematoda 75 1000 64395 34404 ~~2Qih~a limQi~Q 2 200 171 7 3620 Oligochaeta 60 1000 51516 33376 ~~igQY~~~12 iQ~[~~gi 2 200 171 7 3620 bitQQ9~Bh~sect Yr~Qsect 3 200 2576 579~
gQ[Qi~Yl ID2Dil~nsectisect Ostracoda
6 6
500 400
5152 5152
6003 8295
binQ~~nr[ sp gg[QQOYm mQQsect sect~QttQn 5n2Q~nsectia Chironomid larvae
2 34
1 1
200 1000
100 100
171 7 29192
859 859
3620 12927 271 5 2715
Mean number of organismssample 194 Standard deviation
2Mean nurn ber 0 f organIsms fA 166568 Standard deviation 56259
H= 225 SD= 072 SR= 1 45 J= 063
A-16
66
STATION 55 Date 17 May 1984 Depth 24 II
Salinity (bottom) 00 ppt Telllperature (bottom) 126 C No of samples 10
Total Frequency occurrence
Taxa nUllber (X) X SD --------------------------------------------------------------~-----------
Nematollorpha 2 200 171 7 3620 Nematoda 63 1000 54092 35297 Oligochaeta 94 1000 80708 44004 ~~iQQY~k~~l iQt~(m~Qi bitnQg~Qh~~ Yi[~Q gQ[QipoundY~ mni~Q~i Ostracoda
10 9 4 2
600 800 300 100
8586 7727 3434 171 7
9050 4874 6003 5430
bimnQ~~ln~[e sp ~Q(QQbiYm mQD ~Q[QQbiYm 2inipoundQ[n~ Chironomid larvae
6 142
3 1
600 1000 200 100
5152 121921
2576 859
4434 50682 5795 2715
Mean number of organismssample 336 Standard deviation 62
2Mean num ber 0 f organisms m 288490 Standard deviation 53421
H= 214 SD= 071 SR= 119 J= 062
A-17
STATION 45 Date 1 June 1984 Depth 61 m Salinity (bottom) 01 ppt Temperature (bottom) 139 C No of samples 10
Total Frequency occurrence
Density (no2)
Taxa nUllber (1) X SD
Nematoda 174 900 149396 132347 Turbellaria 5 200 4293 10898 ~~~QiQ~sect tmQtpoundQ~ ~QQsectQ flQi~sect Oligochaeta ~~iQQysecttygl~ iQl~rm~~i2 ~Q[Qi~~l~ ~~DilgDsectisect Ostracoda
5 20
190 103
12 5
400 900
1000 900
60 (I 400
4293 17172
163134 88436 10303 4293
6071 8095
92563 51524 11304 6071
bimnQpoundytng[ sp ~gQmYsectisect IDg[pound~Qisect ~Q[QQhi~m sectlmQDisect sectpoundQtiQlsectQ pound~Qgsectisect ChironQmid larvae
33 1
10 375
2
900 100 700
1000 200
28334 859
8586 321975
171 7
17196 2715 7010
179201 3620
Mean number of organismssample 935 Standard deviation 254
nurn b 0 f 2lean er organlsms m 802791 Standard deviation 218423
H= 239 SD= 075 SR= 1 22 J= 065
A-18
STATION 18 Date 1 June 1984 Depth 30 AI
Salinity (bottom) 00 ppt Temperature (bottom) 134 C No of samples 11
Frequency Density (no 1m2)
Taxa Total number
occurrence (X)
---------------- shyX SD
Turbellaria 14 636 10928 1157 7 ~~~Qltlg~ ilipoundQ~ Oligochaeta
10 178
727 1000
7805 138937
601 6 67913
~~iQQy~tY~l~ ill~[m~Qi~ 122 636 95227 93619 ~Q[Qipound~ l~i~lsectisect Ostracoda
7 1
455 9 1
5464 78 1
6946 2589
billQylhg[ Spa 16 818 12489 10420 GQ[QQQil HQi~ 139 1000 108496 70934 gQ[Qebi secteiifQ[~ sectQiiQi2 ~Q~sectisect Diptera pupae
1 2 1
9 1 182
11 1
781 1561 781
2589 3473 2589
Chironomid larvae 2 182 1561 3473
Mean number of organismssample 714 Standard deviation 284
nean num b er 0 f organlsms m 2 612728 Standard deviation 244249
H= 232 SD= 075 SR= 1 25 J= 063
A-19
STATION 58 Date 1 June 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 138 C No of samples 10
Frequency Density (noI 2 ) Total occurrence
Taxa number (X) X SD
Nematoda 173 1000 148538 47383 Turbellaria 3 300 2576 4147 Oligochaeta 53 1000 45506 32139 ~giQgY2k~g~ ini~[m~Qi~ bQg91YehY2 Yi[~nsect ~Qr~i~Yl m~nl~n~i
26 1
10
600 100 500
22324 859
8586
3391 2 2715
13424 bimnQpound~Q~[ sp ~Q9~m[Y poundgnitYpoundQlysect ~QtQehiYm ~lQni
4 1
46
200 100
1000
3434 859
39496
8295 2715
22243 Chironomid larvae 1 100 859 271 5
Mean number of organismssample 318 standard deviation 103
M b f I 2ean num er 0 organlsms III 273035 Standard deviation 88842
H = 1 99 SD= 065 SR= 1 08 J= 060
A-20
STATION 55 Date 1 June 1984 Depth 27 m Salinity (bottom) 00 ppt Temp era t u r e (b 0 t tom) 140 C No of samples 10
Frequency Density (nom 2 ) Total occurrence
Taxa nueber (X) X SD
Nematoda 157 1000 134800 69524 Turbellaria 9 400 7727 13696 tlHl~lk ~2~~iQH 1 100 859 2715 Oligochaeta 49 1000 42071 32745 ~~iQQysect~gl~ S[l9sect bHbQghQb~~ Yirl~
10 1
400 100
8586 859
12799 2715
tQ[Qpoundls l2lilUsect bilQHSbg[ sp ~QrQQbil nllQisectHarpacticoida
4 7
134 1
400 500
1000 100
3434 6010
115052 859
4434 7069
44742 271 5
sectpoundQUQlls poundsQgn~sect Chironomid larvae
1 1
100 100
859 859
271 5 2715
Hydracarina 1 100 859 2715
Hean number of organismssample 376 Standard deviation 132
M b f 2ean num er 0 organIsms m 322834 Standard deviation 113127
H= 202 SD= 068 SR= 1 40 J= 055
A-21
STATION 45 Date 18 June 1984 Depth 67 m Salinity (bottom) 01 ppt Temperature (bottom) 149 C No of samples 10
Frequency Density (nom2)
Taxa Total nUllber
occurrence ex) i SD
Nematoda 109 1000 93587 3891 7 Turbell ari a 3 200 2576 5795 ~g~tbg limoipoundQl Q~Qni2 fQ(i~2 Oligochaeta ~gigQ~~Y inl[ggi ~Q[QiSY2 moilo Ostracoda
3 2
194 44
7 3
200 200
1000 1000 200 200
2576 171 7
16656B 37778 6010 2576
5795 3620
118364 36020 12831 5795
bimoQampl~n~[2 sp ~Q[QQbiYm lmgoi Harpacticoida sectpoundQQ1202 pound2022Osect Chironomid larvae
68 1 1
113 2
900 100 100
1000 200
58385 859 859
97022 171 7
97627 2715 2715
73976 3620
Mean number of organismssa_pie 550 Standard deviation 371
Mean nUll ber 0 f organIsms 2II 472230 Standard deviation 318519
H= 242 SD= 077 SR= 1 32 Ja 065
A-22
STATION 18 Date 18 June 1984 Depth 34 m Salinity (bottom) 00 ppt Temperature (bottom) 155 C No of samples 10
Frequency Density (nom 2) Total occurrence ----------------shy
Taxa nUlber (Z) X SD
Neutoda 291 1000 249853 138826 Turbellaria 1 100 859 2715 ~~n~~nki~ sectQ~~iQ~2 ~g~ntbg2 limni~Q9 Oligochaeta
1 3
123
100 300
1000
859 2576
105608
271 5 4147
48240 ~~igQY~~~~9 int~(mgii ~Q[~i~~~ mini~ni bimnQ~ylbg(~ Spa
67 6 5
1000 500 400
57526 5152 4293
40485 6003 6071
~Q(QebiYm ~imQnisect Harpacticoida
80 2
1000 200
68688 171 7
41276 3620
sect~QttQini ~2nig~n~i Chironomid larvae
2 4
200 300
171 7 3434
3620 6003
Mean number of organismssample 585 Standard deviation 194
I 2Mean urn b er 0 f organIsms m 502281 Standard deviation 166943
H= 203 SD= 068 SR= 1 20 J= 057
A-23
STATI ON 58 Date 18 June 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (noI 2) Total occurrence
TaKa number (X) X SD
Nellertea 2 100 1717 5430 Nematoda 160 1000 137376 6361 1 Turbellaria 4 400 3434 4434 Oligochaeta 36 1000 3091 0 14705 ~iQQYik~ Q1rQ 4 300 3434 6003 bitnQgl~ebysect YrDsect ~Q[QiY~ ~~nni biQQpoundY1h[ sp ~Q[Qeng ~ilQD Chironomid larvae
3 1 3
61 1
300 100 300
1000 100
2576 859
2576 52375
859
4147 2715 4147
1428 1 2715
Chironollid pupae 1 100 859 271 5
Mean number of organismssample 276 standard deviation 72
nean nurn b er 0 f organIsms I 2 236974 Standard deviation 61410
H = 1 78 SD= 060 SR= 1 23 J= 051
A-24
STATION 55 Date 18 June 1984 Depth 18 m Salinity (bottom)1 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (no 1m2) occurrence
Taxa (X) X SD
Nematoda 160 1000 137376 43967 Turbellaria 1 100 859 271 5 Oligochaeta 61 1000 52375 31985 ~~iQQY~kY~~ int~[mQi~ ~Q[Qipound~l~ m~nini~ biIDnQ~Ylb[s sp
3 3 3
300 300 300
2576 2576 2576
4147 4147 4147
~Q[Q~bi~ ~slIDQni~ Chironomid larvae
85 6
1000 600
72981 5152
34165 4434
Mean number of organismssample 322 Standard deviation 75
2Mean number 0 f organIsms m 276469 Standard deviation 64099
H= 178 5D= 065 SR= 0B4 J= 059
A-25
Frequency Density (no2) occurrence -----------------
Taxa (7) X SD
Nematoda 104 1000 89294 47409 Turbell ar i a 1 100 859 2715 ~~~nQ~sect imni~Q~ tjQQsectQlis flQig~ Oligochaeta
2 1
297
100 100
1000
171 7 859
255004
5430 271 5
146273 ~~i~QYsect~Y~lls ilr2is gQrQi~y~ IDDilDia
24 4
600 300
20606 3434
27212 6003
Ostracoda 2 200 171 7 3620 biDQSy~b~C~ sp M~QYsectisect m~r~~Qi ~QrQeniy QD Harpacticoida
157 1 1 1
900 100 100 100
134800 859 859 859
73197 2715 2715 2715
sectpoundQttQDs SsDQD 113 900 97022 61656
STATION 45 Date 2 July 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) No of samples 10
172 C
Mean number of organismssample 708 Standard deviation 339
M ean num b er f 20 organisms 607889 Standard deviation 290B22
H= 216 SD= 073 SR= 1 27 J= 058
1-26
STATION 18 Date 2 July 1984 Depth 24 WI
Sal inity (bottom) 00 ppt Temperature (bottom) 172 C No of samples 10
--------------------------------~-----------------------------------------Frequency Density (nom2)
Total occurrence Taxa number (7) X SD
Nematoda 202 1000 173437 113532 ~~~nih~sect mnpoundQ~ Oligochleta
4 102
400 1000
3434 87577
4434 54873
~~igQYsect~Y~12 inl~rmgi2 ~Q[~poundYl~ m~ni~nsectisect bimnQpoundylh~[~ Spa
115 4
15
900 300 900
98739 3434
12879
100720 6003 9274
~Q[QQniY~ sect~QDi~ 55 900 47223 40525 Harpacticoida 1 100 859 2715 sectpoundQiiQlD SDg~DEisect Chironomid larvae
2 6
200 400
1717 5152
3620 7240
Hymenoptera 1 100 859 2715 Hydracarina 1 100 859 2715
Mean number of organismssample 508 Standard deviation 253
2Mean num ber 0 f organIsms m 436169 Standard deviation 217580
H= 225 SD= 074 SR= 1 22 J= 063
A-27
STATION 58 Date 2 July 1984 Depth 58 1
Salinity (bottom) 00 ppt Temperature (bottom) IBO C No of samples 10
Frequency Density (no2) Total occurrence
Taxa number ltX) i SD
Nematoda 151 1000 129649 42729 Turbellaria 1 100 859 2715 01 i gochaeta 41 1000 35203 22698 ~~i~e~~~ int~~m~~ 3 200 2576 5795 btbQglYRhY~ Yir~n~ ~e~~ampy mni~niii bimQeamp~tb~ sp ~e~eQhiY ~mQni Chironomid larvae
1 4 2
68 1
100 300 200
1000 100
859 3434 171 7
58385 859
271 5 6003 3620
1557 1 2715
Mean number of organisassample 272 Standard deviation
I 2Mean num ber 0 f organIsms I 233539 Standard deviation 62546
H = 1 69 SD= 061 SR= 099 J= 053
A-28
73
STATION 55 Date 2 July 1984 Depth 15 III
Salinity (bottom) 00 ppt Temperature (bottom) 182 C No of samples 10
Frequency Density (nom2) occurrence
Taxa (X) X SD
Nematoda 184 1()00 157982 5264B Turbellaria 1 100 859 271 5 Oligochaeta ~~iQQ~sect~Y~ll~ n~[~~Qi~ bitnggYQDYsect Yi[~nsect ~QrQipoundM2 m2ni~nsectisect bimnQpoundYn~[2 sp ~QrQQhiM Qni Harpacticoida
91 2 1 B 2
96 2
1000 200 100 500 200
1000 200
78133 171 7 859
6869 171 7
82426 1111
26058 3620 271 5 1890 3620shy
25980 3620
ChirDnomid larvae 5 400 4293 6071 Chironolllid pupae 1 100 859 2715
Mean number of organismssample 393 Standard deviation 53
2t1ean nUllber Df organlsms III 337430 Standard deviatiDn 45080
H= 187 SD= 067 SR= 116 J= 054
A-29
STATION 45 Date 17 Jul y 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (X) X SD
Nematoda 215 1000 184599 45837 ~~n~b~~ imDipoundQ Qe~Qni fllHi2
3 1
300 100
2576 859
4147 2715
Oligochaeta 305 1000 261873 147955 ~~iQQY~k~ in~rm~2i ~Qr~ipoundYl IDniln~i~ Ostracoda
17 1 2
500 100 200
14590 859
171 7
22554 2715 3620
bmnQpound~ihr sp ~QCQQhiY ~lQD~
176 1
1000 100
151114 859
57125 2715
Harpacticoida 4 300 3434 6003 sectQ~~Qn poundnQnai~ Chironomid larvae
91 5
1000 400
78133 4293
61310 6071
Mean number of organismssample 821 Standard deviation 275
M b f 2ean num er 0 organlsms m 70491 1 Standard deviation 236369
H= 215 SD= 073 SR= 114 J= 060
A-30
STATION 18 Date 17 Jul y 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom 203 C No of samples 10
Frequency Density (001 2 Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 339 1000 291065 119140 Turbellaria 3 200 2576 5795 ~~2~b~~ limnipoundQ12Oligochaeta
4 18S
300 1000
3434 161417
6003 89393
~~iQQy~~~ls in~(ID~Qi bim~Qampy~bg(2 Spa
34 16
800 700
29192 1373B
22967 15252
~g(gebi~m ~21mQni2 Harpacticoida
52 3
1000 200
44647 2576
25212 5795
2ampQ11Q1202 ampS02Qg~2i2 Chironomid larvae
18 10
700 700
15455 8586
13904 701 0
Mean number of organi$mssample 667 Standard deviation IBB
H ean nurn b er 1 20 f organIsms m 572686 Standard deviation 161750
H = 1 99 SD= 065 SR= 090 J= 060
A-31
STATION 58 Date 17 July 1984 Depth 55 AI
Salinity (bottom) 00 ppt Temperature (bottom) 197 C No of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nellatoda 173 1000 14853B 66390 Turbellaria 1 100 859 271 5 ~~~n~hu ini~QA Oligochaeta
1 46
100 1000
859 39496
2715 26293
~gipoundQy~~ygl2 in~rJg~i~ b1nQglYRnY~ Yi( Bivalvia
6 2 1
400 200 100
5152 1717 859
8295 3620 271 5
ei~ IDnH~n~i~ 2 200 171 7 3620 Ostracoda 1 100 959 271 5 biIDQHlh~( Spa ~Q(QRbim ~21Qnisect Diptera pupae
1 94
1
100 1000 100
859 80708
859
2715 35332 2715
Heleidae 1arvae 5 500 4293 4525 Chironomid larvae 1 100 859 2715
Mean number of organismssample 335 Standard deviatiDn 113
Mean number of organismsRI2 287631 Standard deviation 97413
H= 1 86 SO= 064 SR= 155 J= 049
A-32
STATION 55 Date 17 July 1984 Depth 18 m Sali nity (bottom) 00 ppt TeAlperature (bottom) 199 C No of samples 10
Frequency Density (nom2 ) occurrence
Taxa (X) x S D
Nematoda 61 1000 52375 33972 Turbellaria 1 100 859 2715 Oligochaeta 24 900 20606 11590 ~~i2QY~k~~1 iOi[2 bimDQ~xlb~r sp ~Q[QQhi~ sectgni~ Chironomid larvae
3 1
38 3
200 100
1000 300
2576 859
32627 2576
5795 2715
19326 4147
Mean number of organismssample 131 standard deviation 54
M b f 2ean num er 0 organIsms 112477 Standard deviation 46757
H= 184 SD= 066 SR= 085 J= 065
bull
A-33
STATION 45 Date 1 August 1984 Depth 58 m Sal i nity (bottoll) 03 ppt Temperature (bottom) 203 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa nUllber (X) X SD
Nematoda 145 1000 124417 52344 Turbellaria 1 100 859 2715 Mmth~sect iHpoundQ~ Q~~Qi ilQ[i9Oligochaeta
5 3
196
500 300
1000
4293 2576
168286
4525 4147
91064 ~igQYsect~~li int9i Ostracoda
2 3
100 300
171 7 2576
5430 4147
bimnQpoundtl sp ~Q[Q2hiY sectlQni~
240 6
1000 600
206064 5152
73526 4434
sectpoundQtQl poundngnai~Helei dae larvae
1862 1
1000 100
1598713 859
966134 271 ~
Mean number of organismssample 2464 Standard deviation 1156
211 ean num ber 0 f organIsms II 2115590 Standard deviation 992518
H= 124 SD= 041 SR= 089 J= 036
A-34
STATION 1S Date 1 August 1984 Depth 24 II
Salinity (bottom) 00 ppt Temperature (bottom) 198 C No of samp I es 10
Frequency Density (nom2) occurrence ---------------- shy
Taxa (X) X S D
Nuertea 1 100 859 2715 Nellatolllorpha 1 100 859 2715 Nematoda 248 1000 212933 108288 Turbellaria 4 400 3434 4434 ~untb~la Hli~g Oligochaeta
4 206
400 1000
3434 176872
4434 75309
~~igQYli~dli i[t~(gi~ ~QtQpound l binQ~ybt2 sp ~2l~bi Q[i ~2tlgtQ(ila tirisect sectpoundQtel poundl9lla Chironomid larvae
10 1
20 205
1 574
9
500 100 800
1000 100
1000 400
8586 859
17172 176013
859 492836
7727
10709 271 5
14021 48104
271 5 150531
13696
Mean number of organismssample 1284 Standard deviation 290
M b f I 2ean nurn er 0 organIsms III 1102442 Standard deviation 2488B5
H= 211 SD= 071 SR= 1 16 J= 057
A-35
STATION 58 Date 1 August 1984 Depth 55 m Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samp 1es 10
Frequency Densi ty _ ltnom2 ) Total occurrence
Taxa number (7) X SD
Nemertea 1 100 859 2715 Nematoda 22 900 18889 15036 Turbellaria 1 100 859 2715 Oligochaeta 19 700 16313 17385 biiQQgl~QhY~ YiCg~~ 2 200 171 7 3620 ~Q[~i~~l~ m2nil~n2i2 ~Q[QehiYm ~lmQni2
4 164
300 1000
3434 140810
6003 103048
Heleidae larvae 8 500 6869 8868
Mean number of organismssample 221 Standard deviation 111
I 2Mean num ber 0 f organIsms m 189751 Standard deviation 95391
H = L 37 SD= 043 SR= 090 J= 046
A-36
STATION 55 Date 1 August 1984 Depth 15 m Salinity (bottoll) 01 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (i ) X SD
Nemertea 1 100 859 2715 Neutoda 122 1000 104749 7394B Turbellaria 4 300 3434 6003 ~~~~~nt~ secte~poundQa~ Oligochaeta
1 118
100 1000
859 101315
2715 61223
~giQgY~k~~l iot~[m~Qi btbQg~2b~ Y[O ~grQipound~ ~nl~ni b~ngpound~tb~[ Spa
3 1 5 1
200 100 500 100
2576 859
4293 859
5795 2715 4525 2715
~Q[QebiYm ~mQoi sect~QttQ~ ~OQOi Heleidae larvae
42 2 2
800 200 100
36061 171 7 171 7
21341 3620 5430
Chironomid larvae 4 400 3434 4434
Mean number of organismssapIe 306 Standard deviation 169
M b f I 2ean nurn er 0 organIsms m 262732 Standard deviation 145101
H = 198 SD= 067 SR= 1 45 J= 054
A-37
~-- --------------~~-------------
STATION 45 Date 17 August 1984 Depth 61 1
Salinity (bottom) 10 ppt Temperature (bottom) 210 C No of samp 1es 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nematoda 240 1000 206064 130213 ~~h~sect limQ tjQ~~Hi~ fQ[i~~ Oligochaeta
31 2
245
400 100
1000
26617 1717
210357
75228 5430
121374 babgglYQbl~ Yi[~sect 1 100 859 2715 Ostracoda 1 100 859 271 5 biQ~xtb~[ Spa ~~Q~~isect ~[pound~Qisect ~Qgebi HQOi
333 2
143
1000 200
1000
28591 4 171 7
1227BO
106553 3620
106860 sectpoundQUg~ poundg~nsectisect 1738 1000 1492247 68441 7
Mean number of organismssample 2736 Standard deviation 944
M b f I 2ean num er 0 organlslls m 2349130 Standard deviation 810600
H= 172 SD= 056 SR= 079 J= 052
A-38
STATION 18 Date 17 August 1984 Depth 27 III
Sal i ni ty (botto) 01 ppt Temperature (bottom) 214 C No of samples 10
Frequency Density (nom 2 ) occurrence
Taxa (X) X SD
Nematoda 186 1000 159700 62468 ~tgt SPa 2 100 171 7 5430 Turbellaria 8 400 6869 8868 ~~ntbg2 imnipoundQ 12 700 10303 11304 Oligochaeta 283 1000 242984 90509 ~~iQQY~~Y~lls inlgtmggisBivalvia
4 1
400 100
3434 859
4434 271 5
~Qt~i~Y nilnsectisectbimnQpoundttbg[s SPa ~QtQQbi~ islmQDi2
1 17
286
100 900
1000
859 14596
245560
271 5 10747 83461
sectpoundetteln poundDsggnsectisect Chironomid larvae
526 4
1000 3Q0
451624 3434
179610 6003
Mean number of organismssapIe 1330 Standard deviation 162
Mean nurn ber I 20 f organIsms m 1141938 Standard deviation 139389
H= 214 SD= 073 SR= 1 06 J= 060
A-39
STATION 58 Date 17 August 1984 Depth 55 II
Salinity (bottom) 01 ppt Temperature (bottom) 220 C ND of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (7) x S D
Nematoda 68 1000 58385 27689 Turbellar i a 4 200 3434 8295 Oligochaeta 19 800 16313 13084 ~~i~Q~k~~l~ in~~[m~i bitUQ9Y2bYa Yi[~na Bivalvia
3 3 4
300 300 300
2576 2576 3434
4147 4147 6003
gQ[QipoundYl~ mnilDa 1 100 859 2715 binQpoundY~[ sp gQ[Q2UY a~mgnia sect~Qtgl~n ~n~~ni
2 338
6
100 1000 400
171 7 290207
5152
5430 56636 7240
Mean number of organismssample 448 Standard deviation 72
W b f 2lean num er 0 organlsms II 384653 Standard deviation 61988
H = 1 27 SD= 041 SR= 1 02 J= 038
A-40
STATION 55 Date 17 August 1984 Depth 18 m Salinity (bottom) 00 ppt Temperature (bottol) 223 C No of samples 10
Frequency Density (nom 2 ) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 291 1000 249853 118104 Turbellaria 1 100 859 2715 M~ntb~ mni~Q Oligochaeta
1 47
100 1000
859 40354
2715 28347
~~iQQ~sectkY~ll int~[m~gi bitbQQ1YSDY Yi(gn Bivalvia
25 12
6
900 500 400
21465 10303 5152
1231 0 18459 7240
~Q~2ipoundY mnil~ni Ostracoda
11 8
400 600
9445 6869
12442 6773
bmnQpoundYb~r~ SPa 52 1000 44647 19746 ~QrQsbY lmgnisectsQiielo snQ~ni~ Chironomid larvae
43 5
15
1000 400 BOO
36920 4293
12879
21436 6071 8344
Mean number of organismssample 517 Standard deviation 174
M b f I 2ean num er 0 organlsms m 443896 Standard deviation 149431
W = 228 SD= 065 SR= 1 33 J= 062
A-41
STATION 45 Date 29 August 1984 Depth 55 III
Salinity (bottom) 07 ppt Temperature (bottom) 199 C No of samples 10
Frequency Density (noI 2) Total occurrence
Taxa number (X) X SD
Nematoda 192 1000 164851 98380 ~sntbsect limnipoundQlDligochaeta
2 198
200 1000
171 7 170003
3620 67339
~Q[eipoundYls msniln~isect Ostracoda
1 4
100 400
859 3434
2715 4434
bimnQpoundytb[s Spa gQ[Qeniy sect21QOi~ sectpoundQttQlsO poundsOsggOi
164 87
2468
1000 1000 1000
140810 74698
2119025
39283 39460
840890
Mean number of organismssample 311 6 Standard deviation 101 1
ill b f 2nean nUll er 0 organIsms 2675398 Standard deviation 8682B8
W= 116 SD= 036 SR= 060 J= 039
A-42
STATION 18 Date 29 August 1984 Depth 30 bull Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samples 10
Total Frequency occurrence
Densi ty 2
(nom )
Taxa number (~ ) x S D
Nematoda 150 1000 128790 28905 Turbellaria 7 400 6010 9096 ~nh imni~Qj Oligochaeta ~~i~2Y~k~~1 ini~CIDgii bih2g~Qb~ Yi(~U2 Bivalvi a
B 145
1 1 2
600 1000
100 100 200
6869 124497
859 859
171 7
677 3 84732
271S 2715 3620
~Q[Qi~yli miDllgni bimn2pound~ih~C sp ~QtQehiY imQUia Harpacticoida
7 7
265 1
500 300
1000 100
6010 601 0
227529 859
8145 10747
139462 2715
sect~QtiQDi ~Q~Q~i~ Chironomid larvae
2471 2
1000 200
2121601 171 7
1063112 3620
Mean number of organismssample 3067 Standard deviation 121 9
2Mean number 0 f organIsms m 2633326 standard deviation 1046718
H = 1 09 SD= 034 SR= 1 04 J= 029
A-43
STATION 58 Date 29 August 1984 Depth 55 111
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (noI 2 ) Total occurrence -----------------
Taxa nUllber (X) X SD
Nemertea 4 400 3434 4434 Nuatoda 64 1000 54950 25016 Turbellaria 9 400 7727 11047 ~Hl~b limli~Q19 Oligochaeta
1 37
100 1000
859 31769
2715 19006
i~Qyh il(~~ bHtlQSlheln Yl Bivalvia
4 4
20
200 300 400
3434 3434
17172
8215 6003
26541 ~e(ijY l bQ~dlH sp
26 1
700 100
22324 859
25662 2715
~Q[QQhil iQ sectjgUell HD Heleidae larvae
418 20
1
1000 800 100
358895 17172
859
129443 12799 271 5
Mean number of organismssample 609 Standard deviation 175
nean num b er 0 f organIsms 1 111 2 522887 Standard deviation 150164
H= 176 SD= 051 SR= 1 30 J= 047
A-44
I I
I
I
STATION SS
Date 29 August 1984 Depth 21 1
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (no2) Total occurrence
Taxa nUllber (X) x S D
Nematoda ISO 1000 128790 37969 Turbellaria 1 100 859 271 5 Oligochaeta 48 1000 41213 16088 ~i~g~sect~~l iQ~~mgi bi~QQg~gb~sect ~i~nsect
10 14
600 600
eSB6 12020
9050 14137
Bivalvia 4 200 3434 7240 ~Q[Q~Yl niQaa Ostracoda
15 7
700 SOO
12879 6010
15806 7069
bmQg~~~b~ SPa 14 800 12020 8295 ~g[gaby mgni sect~g~~Qn ~ngnai Chironomid larvae
IB4 25 9
1000 900 700
157982 21465
7727
35563 16810 6335shy
Mean number of organismssample 481 Standard deviation B6
2Mean number 0 f organlsms m 412987 Standard deviation 74131
H= 24S SD= 074 SR= 1 23 J= 068
A-45
STATION 45 Date 14 September 1984 Depth 61 11
Salinity (bottom) 03 ppt Temperature (bottom) IB4 C No of samples 10
---------------------------------~----------------------------------------
Taxa TotalnUlllDer
Frequency occ~~~ence
Density (no 2) -----X-------sect7B
Nematoda 189 1000 162275 85233 t1tQ SPa
Turbellaria 2 2
200 100
171 7 171 7
3620 5430
~~~nIng limoifQl t1QQQDi~ flQriQ Oligochaeta
5 19
142
400 800
1000
4293 1631 3
121921
6071 12442 30504
~QQifYl mDl~D bimoQpoundt1hgr Spa Cumacea
19 184
2
800 1000 200
1631 3 157982
171 7
130B4 69541 3620
~Q[QnniYm ~~lmQDi Harpacticoida
118 1
1000 100
10131 5 B59
43367 2715
sectfQIIQD fOQgO Chironomid larvae
1780 1
1000 100
1528308 859
673586 2715
Mean number of organismssample 2464 Standard deviation 874
M ean num b er f 20 organlsms 2115590 Standard deviation 750305
H= 151 SD= 046 SR= 1 07 J= 041
A-46
STATION 18 Date 14 September 1984 Depth 21 III
Salinity (bottom) 01 ppt Temperature (botto) 182 C No of samples 10
Frequency DenSity (nom 2 ) Total occurrence ---------------- shy
Taxa nUlDber (i) X SD
Nemertea 1 100 859 271 5 Nematoda 186 1000 159700 44925 Turbellaria 16 400 13738 20717 ~~Dth~~ limni~Ql Oligochaeta
13 55
700 900
11162 47223
9096 30085
~Q~ei~Yl nil~Qi~ 17 900 14596 7069 bimDg~lbg[ Spa b 500 5152 6003 ~Q[Q2niY ~lgQi~ Harpacti coi da
562 2
1000 200
482533 171 7
136766 3620
sectpoundQttQ~Q~ ~n~ni 791 1000 679153 324290
Mean number of organismssample 1649 Standard deviation 447
I 211ean nUll ber 0 f organIsms I 1415831 Standard deviation 384136
H= 179 SD= 064 SR= 084 J= 054
A-47
STATION 58 Date 14 September 1984 Depth 58 III
Salinity (bottom) 01 ppt Temperature (bottom) 191 C No of sampl es 10
-------------------------------------------~------------------------------Frequency Density (nom 2 )
Total occurrence Taxa number eX) X SD
Nemertea 1 100 859 2715 Nematoda 55 1000 47223 18658 Turbellaria 10 500 8586 11448
1 100 859 2715 Oligochaeta 41 1000 35203 17850 ~~iQQ~~gll iu1g[m~i ~Q[Q~Yl nilD bimnQ~Y~h[ Spa ~Q[Q~hiYm lmgui sectpoundQilg1D poundU2D Chironomid larvae
4 10
2 277
23 4
100 500 200
1000 700 300
3434 8586 171 7
237832 19748 3434
10861 11448 3620
50561 21051 6003
Mean number of organismssample 428 Standard deviation 51
M b f 2ean num er 0 organIsms III 367481 Standard deviation 43743
H= 179 SD= 055 SR= 114 J= 052
A-48
I I
STATION SS Date 14 September 1984 Depth 21 II
Salinity (bottom) 01 ppt Temperature (bottom) 190 C No of samples 10
--------------------------------------------------------------------~-----
Frequency Density (no1I2) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 102 1000 87577 39200 Oligochaeta 34 700 29192 31142 ~iQ2Y~y1 int(mgi~ bithQgl~en~ Yi(gDsect ~Q(~i~Y m~DilgDsecti~ bimDQamp~1h(sect sp ~2(QQhiY slmQD 2poundQiiQlsD ~sD~g~nsecti Chironomid larvae
36 18 16 17
100 16
3
1000 600 800 700
1000 800 300
30910 15455 13738 14596 85860 13738 2576
157BO 20953 10078 14621 32126 10861 4147
Mean number of organismssample 342 Standard deviation 97
2Mean nUllber 0 f organlsms m 293641 Standard deviation 83617
H= 262 SD= 079 SR= 095 J= 083
A-49
Appendix B--Sediment particle size and organic content of the Cathlamet Bay
benthic invertebrate sites 13 March through 14 September
1984
iii
1
Station 18a 48 54 57
Survey 1 1 1 1
Month March March March March
Day 13 13 13 13
Particle size (mm) Phib Percent by weight
gt 40 -2 000 000 000
20- 40 -1 000 000 000
10- 20 0 000 009 000
05- 10 1 018 1079 032
025- 050 2 545 7583 2468
0125- 025 3 8731 1225 6783
00625-0125 4 491 037 657
lt0625 (5-12) 216 067 060
Organic Content 160 116 128
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
b Phi= -log2(sediment particle diameter in mm)
B-1
Station 18a 48 54 57
Survey 2 2 2 2
Month April April April April
Day 5 5 5 5
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 003 093 000
05shy 10 1 005 31 75 023
025shy 050 2 087 5904 2368
0125- 025 3 6316 750 7155
00625-0125 4 3056 026 427
lt0625 (5-12) 533 052 028
Organic Content 081 077 065
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-2
Station 45 55 58
Survey 3 3 3 3
Month April April April April
Day 18 18 18 18
Particle size (mm)
gt 40
Phi
-2
Percent by weight
000 000 000
20shy 40 -1 000 000 000
10shy 20 0 005 009 004
05shy 10 1 010 027 013
025shy 050 2 015 095 225
0125- 025 3 097 536 6111
00625-0125 4 453 2821 2205
lt0625 (5-12) 9420 6511 1442
Organic Content 31 42 14
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-3
Station 18a 45 55 58
Survey 4 4 4 4
Month May May May May
Day 4 4 4 4
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 021
05shy 10 1 000 065 063
025shy 050 2 012 370 230
0125- 025 3 091 4099 4696
00625-0125 4 322 3650 3052
lt0625 (5-12) 9575 1810 1939
Organic Content 330 180 160
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-4
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
5
May
17
000
000
005
016
217
5862
2729
1170
100
45 55 58
5 5 5
May May May
17 17 17
Percent by weight
000 000
000 000
005 008
113 031
325 274
1903 5613
2784 2401
4870 1672
240 110
000
000
000
010
020
079
397
9494
390
B-5
Station 18al 45 55 58
Survey 6 6 6 6
Month June June June June
Day 6 6 6 6
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 020
05shy 10 1 005 051 027
025shy 050 2 005 301 1 79
0125- 025 3 074 3189 5404
00625-0125 4 599 4118 2885
lt0625 (5-12) 9317 2332 1485
Organic Content 340 240 150
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-6
Station
Survey
Month
Day
Particle size Cmm) Phi
gt 40 -2
20shy 40 -1
10shy 20 a
05shy 10 1
025shy 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
7
June
18
000
000
005
029
138
3917
4143
1768
180
45
7
June
18
55 58
7 7
June June
18 18
Percent by weight
000
000
000
010
020
080
427
9464
310
000 000
000 000
000 007
011 022
057 190
957 5286
3023 2642
5957 1853
1 70 110
B-7
Station 18al 45 55 58
Survey 8 8 8 8
Month July July July July
Day 2 2 2 2
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 006 002 006
05shy 10 1 006 0l3 023
025shy 050 2 017 088 171
0125- 025 3 074 2712 5365
00625-0125 4 552 3892 3081
lt0625 (5-12) 9345 3294 l354
Organic Content 410 210 160
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-8
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
9
July
17
000
000
003
013
130
4294
4434
1127
130
45
9
July
17
Percent
000
000
000
006
012
051
046
9885
290
55
9
July
17
by weight
000
000
019
048
091
628
3616
5597
030
58
9
July
17
000
000
004
022
158
5017
3148
1650
140
B-9
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18al
10
August
1
45
10
August
1
55
10
August
1
58
10
August
1
Percent by weight
000 000
000 004
001 004
009 018
018 088
098 306
049 2510
9824 7070
000
005
045
763
3604
4495
932
156
100 190 060
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-10
Station 18 45 55 58
Survey 11 11 11 11
Month August August August August
Day 17 17 17 17
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000 000
20- 40 -1 005 000 000 000
10- 20 0 021 003 000 210
05- 10 1 064 009 000 159
025- 050 2 226 027 045 2656
0125- 025 3 3259 131 712 3719
00625-0125 4 4327 195 1737 1159
lt0625 (5-12) 2098 9635 7506 2097
Organic Content 210 300 160 100
Ii I
B-11
Station
Survey
Month
Day
Particle size (mm) Phi
gt40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
12
August
29
000
000
012
046
186
3465
4498
17 93
241
45
12
August
29
55 58
12 12
August August
29 29
Percent by weight
000
000
002
009
026
118
189
9656
540
000 000
000 000
003 011
011 028
055 1013
859 5033
1596 1827
7476 2089
1 70 120
B-12
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
_-------------------- shy
B-13
Frequency Density (nolm 2) occurrence -----------------
Taxa (X) X SD
Nemertea 23 900 1974S 15171 Neutollorpha 1 100 859 271 5 Nellatoda 269 1000 230963 69923 Turbellaria 10 600 8586 991 4 ~~xYnki Q~ampiQ 4 300 3434 6003 ~nb limnipoundQl Oligochaeta
1 79
100 1000
859 67829
2715 40363
~i~Q~kXl io[~i biDe9XQDX ~i[~OBi valvi a
11 3 1
800 300 100
9445 2576 859
6335 4147 271 5
~Q[~poundY mnil~n bimoQampXD[ sp ~Q[QabiY lQO Harpacticoida
18 2
159 1
700 200
1000 100
15455 171 7
135659 859
13904 3620
54272 2715
Chironomid larvae 2 200 171 7 3620 Trichoptera larvae 1 100 859 2715
STATION 55 Date 4 May 1984 Depth 21 m Salinity (bottom) 00 ppt Temperature (bottom) 107 C No of suples 10
Mean number of organismssamples 594 Standard deviation 147
Mean number of organismsm2 501422 Standard deviation 126525
H= 219 aD= 069 SR= 1 63 J= 055
A-13
STATION 45 Date 17 May 1984 Depth 61 m Sal i ni ty (bottom) 01 ppt Temperature (bottom) 121 C No of sampl es 10
Frequency Total occurrence
Taxa nUlllber (7)
NelDertea 1 100 859 2715 Nematoda 163 1000 139952 127996 Polychaeta 1 100 859 2715 ~~~n~h~ imni~Qs Hobsonia florida
2 6
200 600
171 7 5152
3620 4434
Oligochaeta 329 1000 282479 13291 8 ~~lQQYsectk~~12 in~~rmQi 57 900 48940 33142 ~Qr~ipound~2 ffi2niDi 6 500 5152 6003 Ostracoda 5 200 4293 10898 bimDg~yth( SPa 13 600 11162 12176 ~Q(Qebi~m sectQDisect Harpacticaida
2 2
200 100
1717 1717
3620 5430
2poundQttQD poundDQDsectisectDiptera adult
296 1
1000 100
254146 859
172633 271 5
Mean number of organismssample 884 Standard deviation 326
b f I 2nean num er 0 organlss m 759002 Standard deviation 280131
H= 209 SD= 071 SR= 1 33 J= 055
A-14
STATION 18 Date 17 May 1984 Depth 30 m Salinity (bottom) 00 ppt Temperature (bottom) 122 C No of samples 12
Frequency Density (nom2) Total occurrence -----------------
Taxa number (X) X SD
Nematoda 50 833 35775 22815 ~ntb limnipoundQl 3 Oligochaeta 97
250 833
2147 69404
3883 48495
~igQ~~k~ intr~ 27 ~QrQipoundY mnin~i~ 5
667 333
19319 3S7S
19068 5740
Ostracoda 1 83 716 2479 bimnQpound~nr sp 5 ~Q(Q~bY ~mQni S4 ~Q(Q~niY ~QinipoundQ(n 3
333 833 250
3578 60102
2147
5740 43780 3883
fgnQ2Q(i bQ~i 1 sectpoundQtgO poundnQn~i 2 Chironomid larvae 4
83 167 250
716 1431 2862
2479 3342 5592
Mean number of organismssample 235 Standard deviation 116
nean nURl b er 0 f organlslls II 2 201771 Standard devi ati on 99221
H= 236 SD= 075 SR= 1 35 J= 066
A-15
STATION 58 Date 17 May 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) 123 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nemertea 2 100 171 7 5430 Nematoda 75 1000 64395 34404 ~~2Qih~a limQi~Q 2 200 171 7 3620 Oligochaeta 60 1000 51516 33376 ~~igQY~~~12 iQ~[~~gi 2 200 171 7 3620 bitQQ9~Bh~sect Yr~Qsect 3 200 2576 579~
gQ[Qi~Yl ID2Dil~nsectisect Ostracoda
6 6
500 400
5152 5152
6003 8295
binQ~~nr[ sp gg[QQOYm mQQsect sect~QttQn 5n2Q~nsectia Chironomid larvae
2 34
1 1
200 1000
100 100
171 7 29192
859 859
3620 12927 271 5 2715
Mean number of organismssample 194 Standard deviation
2Mean nurn ber 0 f organIsms fA 166568 Standard deviation 56259
H= 225 SD= 072 SR= 1 45 J= 063
A-16
66
STATION 55 Date 17 May 1984 Depth 24 II
Salinity (bottom) 00 ppt Telllperature (bottom) 126 C No of samples 10
Total Frequency occurrence
Taxa nUllber (X) X SD --------------------------------------------------------------~-----------
Nematollorpha 2 200 171 7 3620 Nematoda 63 1000 54092 35297 Oligochaeta 94 1000 80708 44004 ~~iQQY~k~~l iQt~(m~Qi bitnQg~Qh~~ Yi[~Q gQ[QipoundY~ mni~Q~i Ostracoda
10 9 4 2
600 800 300 100
8586 7727 3434 171 7
9050 4874 6003 5430
bimnQ~~ln~[e sp ~Q(QQbiYm mQD ~Q[QQbiYm 2inipoundQ[n~ Chironomid larvae
6 142
3 1
600 1000 200 100
5152 121921
2576 859
4434 50682 5795 2715
Mean number of organismssample 336 Standard deviation 62
2Mean num ber 0 f organisms m 288490 Standard deviation 53421
H= 214 SD= 071 SR= 119 J= 062
A-17
STATION 45 Date 1 June 1984 Depth 61 m Salinity (bottom) 01 ppt Temperature (bottom) 139 C No of samples 10
Total Frequency occurrence
Density (no2)
Taxa nUllber (1) X SD
Nematoda 174 900 149396 132347 Turbellaria 5 200 4293 10898 ~~~QiQ~sect tmQtpoundQ~ ~QQsectQ flQi~sect Oligochaeta ~~iQQysecttygl~ iQl~rm~~i2 ~Q[Qi~~l~ ~~DilgDsectisect Ostracoda
5 20
190 103
12 5
400 900
1000 900
60 (I 400
4293 17172
163134 88436 10303 4293
6071 8095
92563 51524 11304 6071
bimnQpoundytng[ sp ~gQmYsectisect IDg[pound~Qisect ~Q[QQhi~m sectlmQDisect sectpoundQtiQlsectQ pound~Qgsectisect ChironQmid larvae
33 1
10 375
2
900 100 700
1000 200
28334 859
8586 321975
171 7
17196 2715 7010
179201 3620
Mean number of organismssample 935 Standard deviation 254
nurn b 0 f 2lean er organlsms m 802791 Standard deviation 218423
H= 239 SD= 075 SR= 1 22 J= 065
A-18
STATION 18 Date 1 June 1984 Depth 30 AI
Salinity (bottom) 00 ppt Temperature (bottom) 134 C No of samples 11
Frequency Density (no 1m2)
Taxa Total number
occurrence (X)
---------------- shyX SD
Turbellaria 14 636 10928 1157 7 ~~~Qltlg~ ilipoundQ~ Oligochaeta
10 178
727 1000
7805 138937
601 6 67913
~~iQQy~tY~l~ ill~[m~Qi~ 122 636 95227 93619 ~Q[Qipound~ l~i~lsectisect Ostracoda
7 1
455 9 1
5464 78 1
6946 2589
billQylhg[ Spa 16 818 12489 10420 GQ[QQQil HQi~ 139 1000 108496 70934 gQ[Qebi secteiifQ[~ sectQiiQi2 ~Q~sectisect Diptera pupae
1 2 1
9 1 182
11 1
781 1561 781
2589 3473 2589
Chironomid larvae 2 182 1561 3473
Mean number of organismssample 714 Standard deviation 284
nean num b er 0 f organlsms m 2 612728 Standard deviation 244249
H= 232 SD= 075 SR= 1 25 J= 063
A-19
STATION 58 Date 1 June 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 138 C No of samples 10
Frequency Density (noI 2 ) Total occurrence
Taxa number (X) X SD
Nematoda 173 1000 148538 47383 Turbellaria 3 300 2576 4147 Oligochaeta 53 1000 45506 32139 ~giQgY2k~g~ ini~[m~Qi~ bQg91YehY2 Yi[~nsect ~Qr~i~Yl m~nl~n~i
26 1
10
600 100 500
22324 859
8586
3391 2 2715
13424 bimnQpound~Q~[ sp ~Q9~m[Y poundgnitYpoundQlysect ~QtQehiYm ~lQni
4 1
46
200 100
1000
3434 859
39496
8295 2715
22243 Chironomid larvae 1 100 859 271 5
Mean number of organismssample 318 standard deviation 103
M b f I 2ean num er 0 organlsms III 273035 Standard deviation 88842
H = 1 99 SD= 065 SR= 1 08 J= 060
A-20
STATION 55 Date 1 June 1984 Depth 27 m Salinity (bottom) 00 ppt Temp era t u r e (b 0 t tom) 140 C No of samples 10
Frequency Density (nom 2 ) Total occurrence
Taxa nueber (X) X SD
Nematoda 157 1000 134800 69524 Turbellaria 9 400 7727 13696 tlHl~lk ~2~~iQH 1 100 859 2715 Oligochaeta 49 1000 42071 32745 ~~iQQysect~gl~ S[l9sect bHbQghQb~~ Yirl~
10 1
400 100
8586 859
12799 2715
tQ[Qpoundls l2lilUsect bilQHSbg[ sp ~QrQQbil nllQisectHarpacticoida
4 7
134 1
400 500
1000 100
3434 6010
115052 859
4434 7069
44742 271 5
sectpoundQUQlls poundsQgn~sect Chironomid larvae
1 1
100 100
859 859
271 5 2715
Hydracarina 1 100 859 2715
Hean number of organismssample 376 Standard deviation 132
M b f 2ean num er 0 organIsms m 322834 Standard deviation 113127
H= 202 SD= 068 SR= 1 40 J= 055
A-21
STATION 45 Date 18 June 1984 Depth 67 m Salinity (bottom) 01 ppt Temperature (bottom) 149 C No of samples 10
Frequency Density (nom2)
Taxa Total nUllber
occurrence ex) i SD
Nematoda 109 1000 93587 3891 7 Turbell ari a 3 200 2576 5795 ~g~tbg limoipoundQl Q~Qni2 fQ(i~2 Oligochaeta ~gigQ~~Y inl[ggi ~Q[QiSY2 moilo Ostracoda
3 2
194 44
7 3
200 200
1000 1000 200 200
2576 171 7
16656B 37778 6010 2576
5795 3620
118364 36020 12831 5795
bimoQampl~n~[2 sp ~Q[QQbiYm lmgoi Harpacticoida sectpoundQQ1202 pound2022Osect Chironomid larvae
68 1 1
113 2
900 100 100
1000 200
58385 859 859
97022 171 7
97627 2715 2715
73976 3620
Mean number of organismssa_pie 550 Standard deviation 371
Mean nUll ber 0 f organIsms 2II 472230 Standard deviation 318519
H= 242 SD= 077 SR= 1 32 Ja 065
A-22
STATION 18 Date 18 June 1984 Depth 34 m Salinity (bottom) 00 ppt Temperature (bottom) 155 C No of samples 10
Frequency Density (nom 2) Total occurrence ----------------shy
Taxa nUlber (Z) X SD
Neutoda 291 1000 249853 138826 Turbellaria 1 100 859 2715 ~~n~~nki~ sectQ~~iQ~2 ~g~ntbg2 limni~Q9 Oligochaeta
1 3
123
100 300
1000
859 2576
105608
271 5 4147
48240 ~~igQY~~~~9 int~(mgii ~Q[~i~~~ mini~ni bimnQ~ylbg(~ Spa
67 6 5
1000 500 400
57526 5152 4293
40485 6003 6071
~Q(QebiYm ~imQnisect Harpacticoida
80 2
1000 200
68688 171 7
41276 3620
sect~QttQini ~2nig~n~i Chironomid larvae
2 4
200 300
171 7 3434
3620 6003
Mean number of organismssample 585 Standard deviation 194
I 2Mean urn b er 0 f organIsms m 502281 Standard deviation 166943
H= 203 SD= 068 SR= 1 20 J= 057
A-23
STATI ON 58 Date 18 June 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (noI 2) Total occurrence
TaKa number (X) X SD
Nellertea 2 100 1717 5430 Nematoda 160 1000 137376 6361 1 Turbellaria 4 400 3434 4434 Oligochaeta 36 1000 3091 0 14705 ~iQQYik~ Q1rQ 4 300 3434 6003 bitnQgl~ebysect YrDsect ~Q[QiY~ ~~nni biQQpoundY1h[ sp ~Q[Qeng ~ilQD Chironomid larvae
3 1 3
61 1
300 100 300
1000 100
2576 859
2576 52375
859
4147 2715 4147
1428 1 2715
Chironollid pupae 1 100 859 271 5
Mean number of organismssample 276 standard deviation 72
nean nurn b er 0 f organIsms I 2 236974 Standard deviation 61410
H = 1 78 SD= 060 SR= 1 23 J= 051
A-24
STATION 55 Date 18 June 1984 Depth 18 m Salinity (bottom)1 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (no 1m2) occurrence
Taxa (X) X SD
Nematoda 160 1000 137376 43967 Turbellaria 1 100 859 271 5 Oligochaeta 61 1000 52375 31985 ~~iQQY~kY~~ int~[mQi~ ~Q[Qipound~l~ m~nini~ biIDnQ~Ylb[s sp
3 3 3
300 300 300
2576 2576 2576
4147 4147 4147
~Q[Q~bi~ ~slIDQni~ Chironomid larvae
85 6
1000 600
72981 5152
34165 4434
Mean number of organismssample 322 Standard deviation 75
2Mean number 0 f organIsms m 276469 Standard deviation 64099
H= 178 5D= 065 SR= 0B4 J= 059
A-25
Frequency Density (no2) occurrence -----------------
Taxa (7) X SD
Nematoda 104 1000 89294 47409 Turbell ar i a 1 100 859 2715 ~~~nQ~sect imni~Q~ tjQQsectQlis flQig~ Oligochaeta
2 1
297
100 100
1000
171 7 859
255004
5430 271 5
146273 ~~i~QYsect~Y~lls ilr2is gQrQi~y~ IDDilDia
24 4
600 300
20606 3434
27212 6003
Ostracoda 2 200 171 7 3620 biDQSy~b~C~ sp M~QYsectisect m~r~~Qi ~QrQeniy QD Harpacticoida
157 1 1 1
900 100 100 100
134800 859 859 859
73197 2715 2715 2715
sectpoundQttQDs SsDQD 113 900 97022 61656
STATION 45 Date 2 July 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) No of samples 10
172 C
Mean number of organismssample 708 Standard deviation 339
M ean num b er f 20 organisms 607889 Standard deviation 290B22
H= 216 SD= 073 SR= 1 27 J= 058
1-26
STATION 18 Date 2 July 1984 Depth 24 WI
Sal inity (bottom) 00 ppt Temperature (bottom) 172 C No of samples 10
--------------------------------~-----------------------------------------Frequency Density (nom2)
Total occurrence Taxa number (7) X SD
Nematoda 202 1000 173437 113532 ~~~nih~sect mnpoundQ~ Oligochleta
4 102
400 1000
3434 87577
4434 54873
~~igQYsect~Y~12 inl~rmgi2 ~Q[~poundYl~ m~ni~nsectisect bimnQpoundylh~[~ Spa
115 4
15
900 300 900
98739 3434
12879
100720 6003 9274
~Q[QQniY~ sect~QDi~ 55 900 47223 40525 Harpacticoida 1 100 859 2715 sectpoundQiiQlD SDg~DEisect Chironomid larvae
2 6
200 400
1717 5152
3620 7240
Hymenoptera 1 100 859 2715 Hydracarina 1 100 859 2715
Mean number of organismssample 508 Standard deviation 253
2Mean num ber 0 f organIsms m 436169 Standard deviation 217580
H= 225 SD= 074 SR= 1 22 J= 063
A-27
STATION 58 Date 2 July 1984 Depth 58 1
Salinity (bottom) 00 ppt Temperature (bottom) IBO C No of samples 10
Frequency Density (no2) Total occurrence
Taxa number ltX) i SD
Nematoda 151 1000 129649 42729 Turbellaria 1 100 859 2715 01 i gochaeta 41 1000 35203 22698 ~~i~e~~~ int~~m~~ 3 200 2576 5795 btbQglYRhY~ Yir~n~ ~e~~ampy mni~niii bimQeamp~tb~ sp ~e~eQhiY ~mQni Chironomid larvae
1 4 2
68 1
100 300 200
1000 100
859 3434 171 7
58385 859
271 5 6003 3620
1557 1 2715
Mean number of organisassample 272 Standard deviation
I 2Mean num ber 0 f organIsms I 233539 Standard deviation 62546
H = 1 69 SD= 061 SR= 099 J= 053
A-28
73
STATION 55 Date 2 July 1984 Depth 15 III
Salinity (bottom) 00 ppt Temperature (bottom) 182 C No of samples 10
Frequency Density (nom2) occurrence
Taxa (X) X SD
Nematoda 184 1()00 157982 5264B Turbellaria 1 100 859 271 5 Oligochaeta ~~iQQ~sect~Y~ll~ n~[~~Qi~ bitnggYQDYsect Yi[~nsect ~QrQipoundM2 m2ni~nsectisect bimnQpoundYn~[2 sp ~QrQQhiM Qni Harpacticoida
91 2 1 B 2
96 2
1000 200 100 500 200
1000 200
78133 171 7 859
6869 171 7
82426 1111
26058 3620 271 5 1890 3620shy
25980 3620
ChirDnomid larvae 5 400 4293 6071 Chironolllid pupae 1 100 859 2715
Mean number of organismssample 393 Standard deviation 53
2t1ean nUllber Df organlsms III 337430 Standard deviatiDn 45080
H= 187 SD= 067 SR= 116 J= 054
A-29
STATION 45 Date 17 Jul y 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (X) X SD
Nematoda 215 1000 184599 45837 ~~n~b~~ imDipoundQ Qe~Qni fllHi2
3 1
300 100
2576 859
4147 2715
Oligochaeta 305 1000 261873 147955 ~~iQQY~k~ in~rm~2i ~Qr~ipoundYl IDniln~i~ Ostracoda
17 1 2
500 100 200
14590 859
171 7
22554 2715 3620
bmnQpound~ihr sp ~QCQQhiY ~lQD~
176 1
1000 100
151114 859
57125 2715
Harpacticoida 4 300 3434 6003 sectQ~~Qn poundnQnai~ Chironomid larvae
91 5
1000 400
78133 4293
61310 6071
Mean number of organismssample 821 Standard deviation 275
M b f 2ean num er 0 organlsms m 70491 1 Standard deviation 236369
H= 215 SD= 073 SR= 114 J= 060
A-30
STATION 18 Date 17 Jul y 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom 203 C No of samples 10
Frequency Density (001 2 Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 339 1000 291065 119140 Turbellaria 3 200 2576 5795 ~~2~b~~ limnipoundQ12Oligochaeta
4 18S
300 1000
3434 161417
6003 89393
~~iQQy~~~ls in~(ID~Qi bim~Qampy~bg(2 Spa
34 16
800 700
29192 1373B
22967 15252
~g(gebi~m ~21mQni2 Harpacticoida
52 3
1000 200
44647 2576
25212 5795
2ampQ11Q1202 ampS02Qg~2i2 Chironomid larvae
18 10
700 700
15455 8586
13904 701 0
Mean number of organi$mssample 667 Standard deviation IBB
H ean nurn b er 1 20 f organIsms m 572686 Standard deviation 161750
H = 1 99 SD= 065 SR= 090 J= 060
A-31
STATION 58 Date 17 July 1984 Depth 55 AI
Salinity (bottom) 00 ppt Temperature (bottom) 197 C No of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nellatoda 173 1000 14853B 66390 Turbellaria 1 100 859 271 5 ~~~n~hu ini~QA Oligochaeta
1 46
100 1000
859 39496
2715 26293
~gipoundQy~~ygl2 in~rJg~i~ b1nQglYRnY~ Yi( Bivalvia
6 2 1
400 200 100
5152 1717 859
8295 3620 271 5
ei~ IDnH~n~i~ 2 200 171 7 3620 Ostracoda 1 100 959 271 5 biIDQHlh~( Spa ~Q(QRbim ~21Qnisect Diptera pupae
1 94
1
100 1000 100
859 80708
859
2715 35332 2715
Heleidae 1arvae 5 500 4293 4525 Chironomid larvae 1 100 859 2715
Mean number of organismssample 335 Standard deviatiDn 113
Mean number of organismsRI2 287631 Standard deviation 97413
H= 1 86 SO= 064 SR= 155 J= 049
A-32
STATION 55 Date 17 July 1984 Depth 18 m Sali nity (bottom) 00 ppt TeAlperature (bottom) 199 C No of samples 10
Frequency Density (nom2 ) occurrence
Taxa (X) x S D
Nematoda 61 1000 52375 33972 Turbellaria 1 100 859 2715 Oligochaeta 24 900 20606 11590 ~~i2QY~k~~1 iOi[2 bimDQ~xlb~r sp ~Q[QQhi~ sectgni~ Chironomid larvae
3 1
38 3
200 100
1000 300
2576 859
32627 2576
5795 2715
19326 4147
Mean number of organismssample 131 standard deviation 54
M b f 2ean num er 0 organIsms 112477 Standard deviation 46757
H= 184 SD= 066 SR= 085 J= 065
bull
A-33
STATION 45 Date 1 August 1984 Depth 58 m Sal i nity (bottoll) 03 ppt Temperature (bottom) 203 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa nUllber (X) X SD
Nematoda 145 1000 124417 52344 Turbellaria 1 100 859 2715 Mmth~sect iHpoundQ~ Q~~Qi ilQ[i9Oligochaeta
5 3
196
500 300
1000
4293 2576
168286
4525 4147
91064 ~igQYsect~~li int9i Ostracoda
2 3
100 300
171 7 2576
5430 4147
bimnQpoundtl sp ~Q[Q2hiY sectlQni~
240 6
1000 600
206064 5152
73526 4434
sectpoundQtQl poundngnai~Helei dae larvae
1862 1
1000 100
1598713 859
966134 271 ~
Mean number of organismssample 2464 Standard deviation 1156
211 ean num ber 0 f organIsms II 2115590 Standard deviation 992518
H= 124 SD= 041 SR= 089 J= 036
A-34
STATION 1S Date 1 August 1984 Depth 24 II
Salinity (bottom) 00 ppt Temperature (bottom) 198 C No of samp I es 10
Frequency Density (nom2) occurrence ---------------- shy
Taxa (X) X S D
Nuertea 1 100 859 2715 Nellatolllorpha 1 100 859 2715 Nematoda 248 1000 212933 108288 Turbellaria 4 400 3434 4434 ~untb~la Hli~g Oligochaeta
4 206
400 1000
3434 176872
4434 75309
~~igQYli~dli i[t~(gi~ ~QtQpound l binQ~ybt2 sp ~2l~bi Q[i ~2tlgtQ(ila tirisect sectpoundQtel poundl9lla Chironomid larvae
10 1
20 205
1 574
9
500 100 800
1000 100
1000 400
8586 859
17172 176013
859 492836
7727
10709 271 5
14021 48104
271 5 150531
13696
Mean number of organismssample 1284 Standard deviation 290
M b f I 2ean nurn er 0 organIsms III 1102442 Standard deviation 2488B5
H= 211 SD= 071 SR= 1 16 J= 057
A-35
STATION 58 Date 1 August 1984 Depth 55 m Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samp 1es 10
Frequency Densi ty _ ltnom2 ) Total occurrence
Taxa number (7) X SD
Nemertea 1 100 859 2715 Nematoda 22 900 18889 15036 Turbellaria 1 100 859 2715 Oligochaeta 19 700 16313 17385 biiQQgl~QhY~ YiCg~~ 2 200 171 7 3620 ~Q[~i~~l~ m2nil~n2i2 ~Q[QehiYm ~lmQni2
4 164
300 1000
3434 140810
6003 103048
Heleidae larvae 8 500 6869 8868
Mean number of organismssample 221 Standard deviation 111
I 2Mean num ber 0 f organIsms m 189751 Standard deviation 95391
H = L 37 SD= 043 SR= 090 J= 046
A-36
STATION 55 Date 1 August 1984 Depth 15 m Salinity (bottoll) 01 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (i ) X SD
Nemertea 1 100 859 2715 Neutoda 122 1000 104749 7394B Turbellaria 4 300 3434 6003 ~~~~~nt~ secte~poundQa~ Oligochaeta
1 118
100 1000
859 101315
2715 61223
~giQgY~k~~l iot~[m~Qi btbQg~2b~ Y[O ~grQipound~ ~nl~ni b~ngpound~tb~[ Spa
3 1 5 1
200 100 500 100
2576 859
4293 859
5795 2715 4525 2715
~Q[QebiYm ~mQoi sect~QttQ~ ~OQOi Heleidae larvae
42 2 2
800 200 100
36061 171 7 171 7
21341 3620 5430
Chironomid larvae 4 400 3434 4434
Mean number of organismssapIe 306 Standard deviation 169
M b f I 2ean nurn er 0 organIsms m 262732 Standard deviation 145101
H = 198 SD= 067 SR= 1 45 J= 054
A-37
~-- --------------~~-------------
STATION 45 Date 17 August 1984 Depth 61 1
Salinity (bottom) 10 ppt Temperature (bottom) 210 C No of samp 1es 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nematoda 240 1000 206064 130213 ~~h~sect limQ tjQ~~Hi~ fQ[i~~ Oligochaeta
31 2
245
400 100
1000
26617 1717
210357
75228 5430
121374 babgglYQbl~ Yi[~sect 1 100 859 2715 Ostracoda 1 100 859 271 5 biQ~xtb~[ Spa ~~Q~~isect ~[pound~Qisect ~Qgebi HQOi
333 2
143
1000 200
1000
28591 4 171 7
1227BO
106553 3620
106860 sectpoundQUg~ poundg~nsectisect 1738 1000 1492247 68441 7
Mean number of organismssample 2736 Standard deviation 944
M b f I 2ean num er 0 organlslls m 2349130 Standard deviation 810600
H= 172 SD= 056 SR= 079 J= 052
A-38
STATION 18 Date 17 August 1984 Depth 27 III
Sal i ni ty (botto) 01 ppt Temperature (bottom) 214 C No of samples 10
Frequency Density (nom 2 ) occurrence
Taxa (X) X SD
Nematoda 186 1000 159700 62468 ~tgt SPa 2 100 171 7 5430 Turbellaria 8 400 6869 8868 ~~ntbg2 imnipoundQ 12 700 10303 11304 Oligochaeta 283 1000 242984 90509 ~~iQQY~~Y~lls inlgtmggisBivalvia
4 1
400 100
3434 859
4434 271 5
~Qt~i~Y nilnsectisectbimnQpoundttbg[s SPa ~QtQQbi~ islmQDi2
1 17
286
100 900
1000
859 14596
245560
271 5 10747 83461
sectpoundetteln poundDsggnsectisect Chironomid larvae
526 4
1000 3Q0
451624 3434
179610 6003
Mean number of organismssapIe 1330 Standard deviation 162
Mean nurn ber I 20 f organIsms m 1141938 Standard deviation 139389
H= 214 SD= 073 SR= 1 06 J= 060
A-39
STATION 58 Date 17 August 1984 Depth 55 II
Salinity (bottom) 01 ppt Temperature (bottom) 220 C ND of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (7) x S D
Nematoda 68 1000 58385 27689 Turbellar i a 4 200 3434 8295 Oligochaeta 19 800 16313 13084 ~~i~Q~k~~l~ in~~[m~i bitUQ9Y2bYa Yi[~na Bivalvia
3 3 4
300 300 300
2576 2576 3434
4147 4147 6003
gQ[QipoundYl~ mnilDa 1 100 859 2715 binQpoundY~[ sp gQ[Q2UY a~mgnia sect~Qtgl~n ~n~~ni
2 338
6
100 1000 400
171 7 290207
5152
5430 56636 7240
Mean number of organismssample 448 Standard deviation 72
W b f 2lean num er 0 organlsms II 384653 Standard deviation 61988
H = 1 27 SD= 041 SR= 1 02 J= 038
A-40
STATION 55 Date 17 August 1984 Depth 18 m Salinity (bottom) 00 ppt Temperature (bottol) 223 C No of samples 10
Frequency Density (nom 2 ) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 291 1000 249853 118104 Turbellaria 1 100 859 2715 M~ntb~ mni~Q Oligochaeta
1 47
100 1000
859 40354
2715 28347
~~iQQ~sectkY~ll int~[m~gi bitbQQ1YSDY Yi(gn Bivalvia
25 12
6
900 500 400
21465 10303 5152
1231 0 18459 7240
~Q~2ipoundY mnil~ni Ostracoda
11 8
400 600
9445 6869
12442 6773
bmnQpoundYb~r~ SPa 52 1000 44647 19746 ~QrQsbY lmgnisectsQiielo snQ~ni~ Chironomid larvae
43 5
15
1000 400 BOO
36920 4293
12879
21436 6071 8344
Mean number of organismssample 517 Standard deviation 174
M b f I 2ean num er 0 organlsms m 443896 Standard deviation 149431
W = 228 SD= 065 SR= 1 33 J= 062
A-41
STATION 45 Date 29 August 1984 Depth 55 III
Salinity (bottom) 07 ppt Temperature (bottom) 199 C No of samples 10
Frequency Density (noI 2) Total occurrence
Taxa number (X) X SD
Nematoda 192 1000 164851 98380 ~sntbsect limnipoundQlDligochaeta
2 198
200 1000
171 7 170003
3620 67339
~Q[eipoundYls msniln~isect Ostracoda
1 4
100 400
859 3434
2715 4434
bimnQpoundytb[s Spa gQ[Qeniy sect21QOi~ sectpoundQttQlsO poundsOsggOi
164 87
2468
1000 1000 1000
140810 74698
2119025
39283 39460
840890
Mean number of organismssample 311 6 Standard deviation 101 1
ill b f 2nean nUll er 0 organIsms 2675398 Standard deviation 8682B8
W= 116 SD= 036 SR= 060 J= 039
A-42
STATION 18 Date 29 August 1984 Depth 30 bull Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samples 10
Total Frequency occurrence
Densi ty 2
(nom )
Taxa number (~ ) x S D
Nematoda 150 1000 128790 28905 Turbellaria 7 400 6010 9096 ~nh imni~Qj Oligochaeta ~~i~2Y~k~~1 ini~CIDgii bih2g~Qb~ Yi(~U2 Bivalvi a
B 145
1 1 2
600 1000
100 100 200
6869 124497
859 859
171 7
677 3 84732
271S 2715 3620
~Q[Qi~yli miDllgni bimn2pound~ih~C sp ~QtQehiY imQUia Harpacticoida
7 7
265 1
500 300
1000 100
6010 601 0
227529 859
8145 10747
139462 2715
sect~QtiQDi ~Q~Q~i~ Chironomid larvae
2471 2
1000 200
2121601 171 7
1063112 3620
Mean number of organismssample 3067 Standard deviation 121 9
2Mean number 0 f organIsms m 2633326 standard deviation 1046718
H = 1 09 SD= 034 SR= 1 04 J= 029
A-43
STATION 58 Date 29 August 1984 Depth 55 111
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (noI 2 ) Total occurrence -----------------
Taxa nUllber (X) X SD
Nemertea 4 400 3434 4434 Nuatoda 64 1000 54950 25016 Turbellaria 9 400 7727 11047 ~Hl~b limli~Q19 Oligochaeta
1 37
100 1000
859 31769
2715 19006
i~Qyh il(~~ bHtlQSlheln Yl Bivalvia
4 4
20
200 300 400
3434 3434
17172
8215 6003
26541 ~e(ijY l bQ~dlH sp
26 1
700 100
22324 859
25662 2715
~Q[QQhil iQ sectjgUell HD Heleidae larvae
418 20
1
1000 800 100
358895 17172
859
129443 12799 271 5
Mean number of organismssample 609 Standard deviation 175
nean num b er 0 f organIsms 1 111 2 522887 Standard deviation 150164
H= 176 SD= 051 SR= 1 30 J= 047
A-44
I I
I
I
STATION SS
Date 29 August 1984 Depth 21 1
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (no2) Total occurrence
Taxa nUllber (X) x S D
Nematoda ISO 1000 128790 37969 Turbellaria 1 100 859 271 5 Oligochaeta 48 1000 41213 16088 ~i~g~sect~~l iQ~~mgi bi~QQg~gb~sect ~i~nsect
10 14
600 600
eSB6 12020
9050 14137
Bivalvia 4 200 3434 7240 ~Q[Q~Yl niQaa Ostracoda
15 7
700 SOO
12879 6010
15806 7069
bmQg~~~b~ SPa 14 800 12020 8295 ~g[gaby mgni sect~g~~Qn ~ngnai Chironomid larvae
IB4 25 9
1000 900 700
157982 21465
7727
35563 16810 6335shy
Mean number of organismssample 481 Standard deviation B6
2Mean number 0 f organlsms m 412987 Standard deviation 74131
H= 24S SD= 074 SR= 1 23 J= 068
A-45
STATION 45 Date 14 September 1984 Depth 61 11
Salinity (bottom) 03 ppt Temperature (bottom) IB4 C No of samples 10
---------------------------------~----------------------------------------
Taxa TotalnUlllDer
Frequency occ~~~ence
Density (no 2) -----X-------sect7B
Nematoda 189 1000 162275 85233 t1tQ SPa
Turbellaria 2 2
200 100
171 7 171 7
3620 5430
~~~nIng limoifQl t1QQQDi~ flQriQ Oligochaeta
5 19
142
400 800
1000
4293 1631 3
121921
6071 12442 30504
~QQifYl mDl~D bimoQpoundt1hgr Spa Cumacea
19 184
2
800 1000 200
1631 3 157982
171 7
130B4 69541 3620
~Q[QnniYm ~~lmQDi Harpacticoida
118 1
1000 100
10131 5 B59
43367 2715
sectfQIIQD fOQgO Chironomid larvae
1780 1
1000 100
1528308 859
673586 2715
Mean number of organismssample 2464 Standard deviation 874
M ean num b er f 20 organlsms 2115590 Standard deviation 750305
H= 151 SD= 046 SR= 1 07 J= 041
A-46
STATION 18 Date 14 September 1984 Depth 21 III
Salinity (bottom) 01 ppt Temperature (botto) 182 C No of samples 10
Frequency DenSity (nom 2 ) Total occurrence ---------------- shy
Taxa nUlDber (i) X SD
Nemertea 1 100 859 271 5 Nematoda 186 1000 159700 44925 Turbellaria 16 400 13738 20717 ~~Dth~~ limni~Ql Oligochaeta
13 55
700 900
11162 47223
9096 30085
~Q~ei~Yl nil~Qi~ 17 900 14596 7069 bimDg~lbg[ Spa b 500 5152 6003 ~Q[Q2niY ~lgQi~ Harpacti coi da
562 2
1000 200
482533 171 7
136766 3620
sectpoundQttQ~Q~ ~n~ni 791 1000 679153 324290
Mean number of organismssample 1649 Standard deviation 447
I 211ean nUll ber 0 f organIsms I 1415831 Standard deviation 384136
H= 179 SD= 064 SR= 084 J= 054
A-47
STATION 58 Date 14 September 1984 Depth 58 III
Salinity (bottom) 01 ppt Temperature (bottom) 191 C No of sampl es 10
-------------------------------------------~------------------------------Frequency Density (nom 2 )
Total occurrence Taxa number eX) X SD
Nemertea 1 100 859 2715 Nematoda 55 1000 47223 18658 Turbellaria 10 500 8586 11448
1 100 859 2715 Oligochaeta 41 1000 35203 17850 ~~iQQ~~gll iu1g[m~i ~Q[Q~Yl nilD bimnQ~Y~h[ Spa ~Q[Q~hiYm lmgui sectpoundQilg1D poundU2D Chironomid larvae
4 10
2 277
23 4
100 500 200
1000 700 300
3434 8586 171 7
237832 19748 3434
10861 11448 3620
50561 21051 6003
Mean number of organismssample 428 Standard deviation 51
M b f 2ean num er 0 organIsms III 367481 Standard deviation 43743
H= 179 SD= 055 SR= 114 J= 052
A-48
I I
STATION SS Date 14 September 1984 Depth 21 II
Salinity (bottom) 01 ppt Temperature (bottom) 190 C No of samples 10
--------------------------------------------------------------------~-----
Frequency Density (no1I2) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 102 1000 87577 39200 Oligochaeta 34 700 29192 31142 ~iQ2Y~y1 int(mgi~ bithQgl~en~ Yi(gDsect ~Q(~i~Y m~DilgDsecti~ bimDQamp~1h(sect sp ~2(QQhiY slmQD 2poundQiiQlsD ~sD~g~nsecti Chironomid larvae
36 18 16 17
100 16
3
1000 600 800 700
1000 800 300
30910 15455 13738 14596 85860 13738 2576
157BO 20953 10078 14621 32126 10861 4147
Mean number of organismssample 342 Standard deviation 97
2Mean nUllber 0 f organlsms m 293641 Standard deviation 83617
H= 262 SD= 079 SR= 095 J= 083
A-49
Appendix B--Sediment particle size and organic content of the Cathlamet Bay
benthic invertebrate sites 13 March through 14 September
1984
iii
1
Station 18a 48 54 57
Survey 1 1 1 1
Month March March March March
Day 13 13 13 13
Particle size (mm) Phib Percent by weight
gt 40 -2 000 000 000
20- 40 -1 000 000 000
10- 20 0 000 009 000
05- 10 1 018 1079 032
025- 050 2 545 7583 2468
0125- 025 3 8731 1225 6783
00625-0125 4 491 037 657
lt0625 (5-12) 216 067 060
Organic Content 160 116 128
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
b Phi= -log2(sediment particle diameter in mm)
B-1
Station 18a 48 54 57
Survey 2 2 2 2
Month April April April April
Day 5 5 5 5
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 003 093 000
05shy 10 1 005 31 75 023
025shy 050 2 087 5904 2368
0125- 025 3 6316 750 7155
00625-0125 4 3056 026 427
lt0625 (5-12) 533 052 028
Organic Content 081 077 065
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-2
Station 45 55 58
Survey 3 3 3 3
Month April April April April
Day 18 18 18 18
Particle size (mm)
gt 40
Phi
-2
Percent by weight
000 000 000
20shy 40 -1 000 000 000
10shy 20 0 005 009 004
05shy 10 1 010 027 013
025shy 050 2 015 095 225
0125- 025 3 097 536 6111
00625-0125 4 453 2821 2205
lt0625 (5-12) 9420 6511 1442
Organic Content 31 42 14
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-3
Station 18a 45 55 58
Survey 4 4 4 4
Month May May May May
Day 4 4 4 4
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 021
05shy 10 1 000 065 063
025shy 050 2 012 370 230
0125- 025 3 091 4099 4696
00625-0125 4 322 3650 3052
lt0625 (5-12) 9575 1810 1939
Organic Content 330 180 160
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-4
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
5
May
17
000
000
005
016
217
5862
2729
1170
100
45 55 58
5 5 5
May May May
17 17 17
Percent by weight
000 000
000 000
005 008
113 031
325 274
1903 5613
2784 2401
4870 1672
240 110
000
000
000
010
020
079
397
9494
390
B-5
Station 18al 45 55 58
Survey 6 6 6 6
Month June June June June
Day 6 6 6 6
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 020
05shy 10 1 005 051 027
025shy 050 2 005 301 1 79
0125- 025 3 074 3189 5404
00625-0125 4 599 4118 2885
lt0625 (5-12) 9317 2332 1485
Organic Content 340 240 150
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-6
Station
Survey
Month
Day
Particle size Cmm) Phi
gt 40 -2
20shy 40 -1
10shy 20 a
05shy 10 1
025shy 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
7
June
18
000
000
005
029
138
3917
4143
1768
180
45
7
June
18
55 58
7 7
June June
18 18
Percent by weight
000
000
000
010
020
080
427
9464
310
000 000
000 000
000 007
011 022
057 190
957 5286
3023 2642
5957 1853
1 70 110
B-7
Station 18al 45 55 58
Survey 8 8 8 8
Month July July July July
Day 2 2 2 2
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 006 002 006
05shy 10 1 006 0l3 023
025shy 050 2 017 088 171
0125- 025 3 074 2712 5365
00625-0125 4 552 3892 3081
lt0625 (5-12) 9345 3294 l354
Organic Content 410 210 160
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-8
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
9
July
17
000
000
003
013
130
4294
4434
1127
130
45
9
July
17
Percent
000
000
000
006
012
051
046
9885
290
55
9
July
17
by weight
000
000
019
048
091
628
3616
5597
030
58
9
July
17
000
000
004
022
158
5017
3148
1650
140
B-9
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18al
10
August
1
45
10
August
1
55
10
August
1
58
10
August
1
Percent by weight
000 000
000 004
001 004
009 018
018 088
098 306
049 2510
9824 7070
000
005
045
763
3604
4495
932
156
100 190 060
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-10
Station 18 45 55 58
Survey 11 11 11 11
Month August August August August
Day 17 17 17 17
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000 000
20- 40 -1 005 000 000 000
10- 20 0 021 003 000 210
05- 10 1 064 009 000 159
025- 050 2 226 027 045 2656
0125- 025 3 3259 131 712 3719
00625-0125 4 4327 195 1737 1159
lt0625 (5-12) 2098 9635 7506 2097
Organic Content 210 300 160 100
Ii I
B-11
Station
Survey
Month
Day
Particle size (mm) Phi
gt40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
12
August
29
000
000
012
046
186
3465
4498
17 93
241
45
12
August
29
55 58
12 12
August August
29 29
Percent by weight
000
000
002
009
026
118
189
9656
540
000 000
000 000
003 011
011 028
055 1013
859 5033
1596 1827
7476 2089
1 70 120
B-12
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
_-------------------- shy
B-13
STATION 45 Date 17 May 1984 Depth 61 m Sal i ni ty (bottom) 01 ppt Temperature (bottom) 121 C No of sampl es 10
Frequency Total occurrence
Taxa nUlllber (7)
NelDertea 1 100 859 2715 Nematoda 163 1000 139952 127996 Polychaeta 1 100 859 2715 ~~~n~h~ imni~Qs Hobsonia florida
2 6
200 600
171 7 5152
3620 4434
Oligochaeta 329 1000 282479 13291 8 ~~lQQYsectk~~12 in~~rmQi 57 900 48940 33142 ~Qr~ipound~2 ffi2niDi 6 500 5152 6003 Ostracoda 5 200 4293 10898 bimDg~yth( SPa 13 600 11162 12176 ~Q(Qebi~m sectQDisect Harpacticaida
2 2
200 100
1717 1717
3620 5430
2poundQttQD poundDQDsectisectDiptera adult
296 1
1000 100
254146 859
172633 271 5
Mean number of organismssample 884 Standard deviation 326
b f I 2nean num er 0 organlss m 759002 Standard deviation 280131
H= 209 SD= 071 SR= 1 33 J= 055
A-14
STATION 18 Date 17 May 1984 Depth 30 m Salinity (bottom) 00 ppt Temperature (bottom) 122 C No of samples 12
Frequency Density (nom2) Total occurrence -----------------
Taxa number (X) X SD
Nematoda 50 833 35775 22815 ~ntb limnipoundQl 3 Oligochaeta 97
250 833
2147 69404
3883 48495
~igQ~~k~ intr~ 27 ~QrQipoundY mnin~i~ 5
667 333
19319 3S7S
19068 5740
Ostracoda 1 83 716 2479 bimnQpound~nr sp 5 ~Q(Q~bY ~mQni S4 ~Q(Q~niY ~QinipoundQ(n 3
333 833 250
3578 60102
2147
5740 43780 3883
fgnQ2Q(i bQ~i 1 sectpoundQtgO poundnQn~i 2 Chironomid larvae 4
83 167 250
716 1431 2862
2479 3342 5592
Mean number of organismssample 235 Standard deviation 116
nean nURl b er 0 f organlslls II 2 201771 Standard devi ati on 99221
H= 236 SD= 075 SR= 1 35 J= 066
A-15
STATION 58 Date 17 May 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) 123 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nemertea 2 100 171 7 5430 Nematoda 75 1000 64395 34404 ~~2Qih~a limQi~Q 2 200 171 7 3620 Oligochaeta 60 1000 51516 33376 ~~igQY~~~12 iQ~[~~gi 2 200 171 7 3620 bitQQ9~Bh~sect Yr~Qsect 3 200 2576 579~
gQ[Qi~Yl ID2Dil~nsectisect Ostracoda
6 6
500 400
5152 5152
6003 8295
binQ~~nr[ sp gg[QQOYm mQQsect sect~QttQn 5n2Q~nsectia Chironomid larvae
2 34
1 1
200 1000
100 100
171 7 29192
859 859
3620 12927 271 5 2715
Mean number of organismssample 194 Standard deviation
2Mean nurn ber 0 f organIsms fA 166568 Standard deviation 56259
H= 225 SD= 072 SR= 1 45 J= 063
A-16
66
STATION 55 Date 17 May 1984 Depth 24 II
Salinity (bottom) 00 ppt Telllperature (bottom) 126 C No of samples 10
Total Frequency occurrence
Taxa nUllber (X) X SD --------------------------------------------------------------~-----------
Nematollorpha 2 200 171 7 3620 Nematoda 63 1000 54092 35297 Oligochaeta 94 1000 80708 44004 ~~iQQY~k~~l iQt~(m~Qi bitnQg~Qh~~ Yi[~Q gQ[QipoundY~ mni~Q~i Ostracoda
10 9 4 2
600 800 300 100
8586 7727 3434 171 7
9050 4874 6003 5430
bimnQ~~ln~[e sp ~Q(QQbiYm mQD ~Q[QQbiYm 2inipoundQ[n~ Chironomid larvae
6 142
3 1
600 1000 200 100
5152 121921
2576 859
4434 50682 5795 2715
Mean number of organismssample 336 Standard deviation 62
2Mean num ber 0 f organisms m 288490 Standard deviation 53421
H= 214 SD= 071 SR= 119 J= 062
A-17
STATION 45 Date 1 June 1984 Depth 61 m Salinity (bottom) 01 ppt Temperature (bottom) 139 C No of samples 10
Total Frequency occurrence
Density (no2)
Taxa nUllber (1) X SD
Nematoda 174 900 149396 132347 Turbellaria 5 200 4293 10898 ~~~QiQ~sect tmQtpoundQ~ ~QQsectQ flQi~sect Oligochaeta ~~iQQysecttygl~ iQl~rm~~i2 ~Q[Qi~~l~ ~~DilgDsectisect Ostracoda
5 20
190 103
12 5
400 900
1000 900
60 (I 400
4293 17172
163134 88436 10303 4293
6071 8095
92563 51524 11304 6071
bimnQpoundytng[ sp ~gQmYsectisect IDg[pound~Qisect ~Q[QQhi~m sectlmQDisect sectpoundQtiQlsectQ pound~Qgsectisect ChironQmid larvae
33 1
10 375
2
900 100 700
1000 200
28334 859
8586 321975
171 7
17196 2715 7010
179201 3620
Mean number of organismssample 935 Standard deviation 254
nurn b 0 f 2lean er organlsms m 802791 Standard deviation 218423
H= 239 SD= 075 SR= 1 22 J= 065
A-18
STATION 18 Date 1 June 1984 Depth 30 AI
Salinity (bottom) 00 ppt Temperature (bottom) 134 C No of samples 11
Frequency Density (no 1m2)
Taxa Total number
occurrence (X)
---------------- shyX SD
Turbellaria 14 636 10928 1157 7 ~~~Qltlg~ ilipoundQ~ Oligochaeta
10 178
727 1000
7805 138937
601 6 67913
~~iQQy~tY~l~ ill~[m~Qi~ 122 636 95227 93619 ~Q[Qipound~ l~i~lsectisect Ostracoda
7 1
455 9 1
5464 78 1
6946 2589
billQylhg[ Spa 16 818 12489 10420 GQ[QQQil HQi~ 139 1000 108496 70934 gQ[Qebi secteiifQ[~ sectQiiQi2 ~Q~sectisect Diptera pupae
1 2 1
9 1 182
11 1
781 1561 781
2589 3473 2589
Chironomid larvae 2 182 1561 3473
Mean number of organismssample 714 Standard deviation 284
nean num b er 0 f organlsms m 2 612728 Standard deviation 244249
H= 232 SD= 075 SR= 1 25 J= 063
A-19
STATION 58 Date 1 June 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 138 C No of samples 10
Frequency Density (noI 2 ) Total occurrence
Taxa number (X) X SD
Nematoda 173 1000 148538 47383 Turbellaria 3 300 2576 4147 Oligochaeta 53 1000 45506 32139 ~giQgY2k~g~ ini~[m~Qi~ bQg91YehY2 Yi[~nsect ~Qr~i~Yl m~nl~n~i
26 1
10
600 100 500
22324 859
8586
3391 2 2715
13424 bimnQpound~Q~[ sp ~Q9~m[Y poundgnitYpoundQlysect ~QtQehiYm ~lQni
4 1
46
200 100
1000
3434 859
39496
8295 2715
22243 Chironomid larvae 1 100 859 271 5
Mean number of organismssample 318 standard deviation 103
M b f I 2ean num er 0 organlsms III 273035 Standard deviation 88842
H = 1 99 SD= 065 SR= 1 08 J= 060
A-20
STATION 55 Date 1 June 1984 Depth 27 m Salinity (bottom) 00 ppt Temp era t u r e (b 0 t tom) 140 C No of samples 10
Frequency Density (nom 2 ) Total occurrence
Taxa nueber (X) X SD
Nematoda 157 1000 134800 69524 Turbellaria 9 400 7727 13696 tlHl~lk ~2~~iQH 1 100 859 2715 Oligochaeta 49 1000 42071 32745 ~~iQQysect~gl~ S[l9sect bHbQghQb~~ Yirl~
10 1
400 100
8586 859
12799 2715
tQ[Qpoundls l2lilUsect bilQHSbg[ sp ~QrQQbil nllQisectHarpacticoida
4 7
134 1
400 500
1000 100
3434 6010
115052 859
4434 7069
44742 271 5
sectpoundQUQlls poundsQgn~sect Chironomid larvae
1 1
100 100
859 859
271 5 2715
Hydracarina 1 100 859 2715
Hean number of organismssample 376 Standard deviation 132
M b f 2ean num er 0 organIsms m 322834 Standard deviation 113127
H= 202 SD= 068 SR= 1 40 J= 055
A-21
STATION 45 Date 18 June 1984 Depth 67 m Salinity (bottom) 01 ppt Temperature (bottom) 149 C No of samples 10
Frequency Density (nom2)
Taxa Total nUllber
occurrence ex) i SD
Nematoda 109 1000 93587 3891 7 Turbell ari a 3 200 2576 5795 ~g~tbg limoipoundQl Q~Qni2 fQ(i~2 Oligochaeta ~gigQ~~Y inl[ggi ~Q[QiSY2 moilo Ostracoda
3 2
194 44
7 3
200 200
1000 1000 200 200
2576 171 7
16656B 37778 6010 2576
5795 3620
118364 36020 12831 5795
bimoQampl~n~[2 sp ~Q[QQbiYm lmgoi Harpacticoida sectpoundQQ1202 pound2022Osect Chironomid larvae
68 1 1
113 2
900 100 100
1000 200
58385 859 859
97022 171 7
97627 2715 2715
73976 3620
Mean number of organismssa_pie 550 Standard deviation 371
Mean nUll ber 0 f organIsms 2II 472230 Standard deviation 318519
H= 242 SD= 077 SR= 1 32 Ja 065
A-22
STATION 18 Date 18 June 1984 Depth 34 m Salinity (bottom) 00 ppt Temperature (bottom) 155 C No of samples 10
Frequency Density (nom 2) Total occurrence ----------------shy
Taxa nUlber (Z) X SD
Neutoda 291 1000 249853 138826 Turbellaria 1 100 859 2715 ~~n~~nki~ sectQ~~iQ~2 ~g~ntbg2 limni~Q9 Oligochaeta
1 3
123
100 300
1000
859 2576
105608
271 5 4147
48240 ~~igQY~~~~9 int~(mgii ~Q[~i~~~ mini~ni bimnQ~ylbg(~ Spa
67 6 5
1000 500 400
57526 5152 4293
40485 6003 6071
~Q(QebiYm ~imQnisect Harpacticoida
80 2
1000 200
68688 171 7
41276 3620
sect~QttQini ~2nig~n~i Chironomid larvae
2 4
200 300
171 7 3434
3620 6003
Mean number of organismssample 585 Standard deviation 194
I 2Mean urn b er 0 f organIsms m 502281 Standard deviation 166943
H= 203 SD= 068 SR= 1 20 J= 057
A-23
STATI ON 58 Date 18 June 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (noI 2) Total occurrence
TaKa number (X) X SD
Nellertea 2 100 1717 5430 Nematoda 160 1000 137376 6361 1 Turbellaria 4 400 3434 4434 Oligochaeta 36 1000 3091 0 14705 ~iQQYik~ Q1rQ 4 300 3434 6003 bitnQgl~ebysect YrDsect ~Q[QiY~ ~~nni biQQpoundY1h[ sp ~Q[Qeng ~ilQD Chironomid larvae
3 1 3
61 1
300 100 300
1000 100
2576 859
2576 52375
859
4147 2715 4147
1428 1 2715
Chironollid pupae 1 100 859 271 5
Mean number of organismssample 276 standard deviation 72
nean nurn b er 0 f organIsms I 2 236974 Standard deviation 61410
H = 1 78 SD= 060 SR= 1 23 J= 051
A-24
STATION 55 Date 18 June 1984 Depth 18 m Salinity (bottom)1 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (no 1m2) occurrence
Taxa (X) X SD
Nematoda 160 1000 137376 43967 Turbellaria 1 100 859 271 5 Oligochaeta 61 1000 52375 31985 ~~iQQY~kY~~ int~[mQi~ ~Q[Qipound~l~ m~nini~ biIDnQ~Ylb[s sp
3 3 3
300 300 300
2576 2576 2576
4147 4147 4147
~Q[Q~bi~ ~slIDQni~ Chironomid larvae
85 6
1000 600
72981 5152
34165 4434
Mean number of organismssample 322 Standard deviation 75
2Mean number 0 f organIsms m 276469 Standard deviation 64099
H= 178 5D= 065 SR= 0B4 J= 059
A-25
Frequency Density (no2) occurrence -----------------
Taxa (7) X SD
Nematoda 104 1000 89294 47409 Turbell ar i a 1 100 859 2715 ~~~nQ~sect imni~Q~ tjQQsectQlis flQig~ Oligochaeta
2 1
297
100 100
1000
171 7 859
255004
5430 271 5
146273 ~~i~QYsect~Y~lls ilr2is gQrQi~y~ IDDilDia
24 4
600 300
20606 3434
27212 6003
Ostracoda 2 200 171 7 3620 biDQSy~b~C~ sp M~QYsectisect m~r~~Qi ~QrQeniy QD Harpacticoida
157 1 1 1
900 100 100 100
134800 859 859 859
73197 2715 2715 2715
sectpoundQttQDs SsDQD 113 900 97022 61656
STATION 45 Date 2 July 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) No of samples 10
172 C
Mean number of organismssample 708 Standard deviation 339
M ean num b er f 20 organisms 607889 Standard deviation 290B22
H= 216 SD= 073 SR= 1 27 J= 058
1-26
STATION 18 Date 2 July 1984 Depth 24 WI
Sal inity (bottom) 00 ppt Temperature (bottom) 172 C No of samples 10
--------------------------------~-----------------------------------------Frequency Density (nom2)
Total occurrence Taxa number (7) X SD
Nematoda 202 1000 173437 113532 ~~~nih~sect mnpoundQ~ Oligochleta
4 102
400 1000
3434 87577
4434 54873
~~igQYsect~Y~12 inl~rmgi2 ~Q[~poundYl~ m~ni~nsectisect bimnQpoundylh~[~ Spa
115 4
15
900 300 900
98739 3434
12879
100720 6003 9274
~Q[QQniY~ sect~QDi~ 55 900 47223 40525 Harpacticoida 1 100 859 2715 sectpoundQiiQlD SDg~DEisect Chironomid larvae
2 6
200 400
1717 5152
3620 7240
Hymenoptera 1 100 859 2715 Hydracarina 1 100 859 2715
Mean number of organismssample 508 Standard deviation 253
2Mean num ber 0 f organIsms m 436169 Standard deviation 217580
H= 225 SD= 074 SR= 1 22 J= 063
A-27
STATION 58 Date 2 July 1984 Depth 58 1
Salinity (bottom) 00 ppt Temperature (bottom) IBO C No of samples 10
Frequency Density (no2) Total occurrence
Taxa number ltX) i SD
Nematoda 151 1000 129649 42729 Turbellaria 1 100 859 2715 01 i gochaeta 41 1000 35203 22698 ~~i~e~~~ int~~m~~ 3 200 2576 5795 btbQglYRhY~ Yir~n~ ~e~~ampy mni~niii bimQeamp~tb~ sp ~e~eQhiY ~mQni Chironomid larvae
1 4 2
68 1
100 300 200
1000 100
859 3434 171 7
58385 859
271 5 6003 3620
1557 1 2715
Mean number of organisassample 272 Standard deviation
I 2Mean num ber 0 f organIsms I 233539 Standard deviation 62546
H = 1 69 SD= 061 SR= 099 J= 053
A-28
73
STATION 55 Date 2 July 1984 Depth 15 III
Salinity (bottom) 00 ppt Temperature (bottom) 182 C No of samples 10
Frequency Density (nom2) occurrence
Taxa (X) X SD
Nematoda 184 1()00 157982 5264B Turbellaria 1 100 859 271 5 Oligochaeta ~~iQQ~sect~Y~ll~ n~[~~Qi~ bitnggYQDYsect Yi[~nsect ~QrQipoundM2 m2ni~nsectisect bimnQpoundYn~[2 sp ~QrQQhiM Qni Harpacticoida
91 2 1 B 2
96 2
1000 200 100 500 200
1000 200
78133 171 7 859
6869 171 7
82426 1111
26058 3620 271 5 1890 3620shy
25980 3620
ChirDnomid larvae 5 400 4293 6071 Chironolllid pupae 1 100 859 2715
Mean number of organismssample 393 Standard deviation 53
2t1ean nUllber Df organlsms III 337430 Standard deviatiDn 45080
H= 187 SD= 067 SR= 116 J= 054
A-29
STATION 45 Date 17 Jul y 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (X) X SD
Nematoda 215 1000 184599 45837 ~~n~b~~ imDipoundQ Qe~Qni fllHi2
3 1
300 100
2576 859
4147 2715
Oligochaeta 305 1000 261873 147955 ~~iQQY~k~ in~rm~2i ~Qr~ipoundYl IDniln~i~ Ostracoda
17 1 2
500 100 200
14590 859
171 7
22554 2715 3620
bmnQpound~ihr sp ~QCQQhiY ~lQD~
176 1
1000 100
151114 859
57125 2715
Harpacticoida 4 300 3434 6003 sectQ~~Qn poundnQnai~ Chironomid larvae
91 5
1000 400
78133 4293
61310 6071
Mean number of organismssample 821 Standard deviation 275
M b f 2ean num er 0 organlsms m 70491 1 Standard deviation 236369
H= 215 SD= 073 SR= 114 J= 060
A-30
STATION 18 Date 17 Jul y 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom 203 C No of samples 10
Frequency Density (001 2 Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 339 1000 291065 119140 Turbellaria 3 200 2576 5795 ~~2~b~~ limnipoundQ12Oligochaeta
4 18S
300 1000
3434 161417
6003 89393
~~iQQy~~~ls in~(ID~Qi bim~Qampy~bg(2 Spa
34 16
800 700
29192 1373B
22967 15252
~g(gebi~m ~21mQni2 Harpacticoida
52 3
1000 200
44647 2576
25212 5795
2ampQ11Q1202 ampS02Qg~2i2 Chironomid larvae
18 10
700 700
15455 8586
13904 701 0
Mean number of organi$mssample 667 Standard deviation IBB
H ean nurn b er 1 20 f organIsms m 572686 Standard deviation 161750
H = 1 99 SD= 065 SR= 090 J= 060
A-31
STATION 58 Date 17 July 1984 Depth 55 AI
Salinity (bottom) 00 ppt Temperature (bottom) 197 C No of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nellatoda 173 1000 14853B 66390 Turbellaria 1 100 859 271 5 ~~~n~hu ini~QA Oligochaeta
1 46
100 1000
859 39496
2715 26293
~gipoundQy~~ygl2 in~rJg~i~ b1nQglYRnY~ Yi( Bivalvia
6 2 1
400 200 100
5152 1717 859
8295 3620 271 5
ei~ IDnH~n~i~ 2 200 171 7 3620 Ostracoda 1 100 959 271 5 biIDQHlh~( Spa ~Q(QRbim ~21Qnisect Diptera pupae
1 94
1
100 1000 100
859 80708
859
2715 35332 2715
Heleidae 1arvae 5 500 4293 4525 Chironomid larvae 1 100 859 2715
Mean number of organismssample 335 Standard deviatiDn 113
Mean number of organismsRI2 287631 Standard deviation 97413
H= 1 86 SO= 064 SR= 155 J= 049
A-32
STATION 55 Date 17 July 1984 Depth 18 m Sali nity (bottom) 00 ppt TeAlperature (bottom) 199 C No of samples 10
Frequency Density (nom2 ) occurrence
Taxa (X) x S D
Nematoda 61 1000 52375 33972 Turbellaria 1 100 859 2715 Oligochaeta 24 900 20606 11590 ~~i2QY~k~~1 iOi[2 bimDQ~xlb~r sp ~Q[QQhi~ sectgni~ Chironomid larvae
3 1
38 3
200 100
1000 300
2576 859
32627 2576
5795 2715
19326 4147
Mean number of organismssample 131 standard deviation 54
M b f 2ean num er 0 organIsms 112477 Standard deviation 46757
H= 184 SD= 066 SR= 085 J= 065
bull
A-33
STATION 45 Date 1 August 1984 Depth 58 m Sal i nity (bottoll) 03 ppt Temperature (bottom) 203 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa nUllber (X) X SD
Nematoda 145 1000 124417 52344 Turbellaria 1 100 859 2715 Mmth~sect iHpoundQ~ Q~~Qi ilQ[i9Oligochaeta
5 3
196
500 300
1000
4293 2576
168286
4525 4147
91064 ~igQYsect~~li int9i Ostracoda
2 3
100 300
171 7 2576
5430 4147
bimnQpoundtl sp ~Q[Q2hiY sectlQni~
240 6
1000 600
206064 5152
73526 4434
sectpoundQtQl poundngnai~Helei dae larvae
1862 1
1000 100
1598713 859
966134 271 ~
Mean number of organismssample 2464 Standard deviation 1156
211 ean num ber 0 f organIsms II 2115590 Standard deviation 992518
H= 124 SD= 041 SR= 089 J= 036
A-34
STATION 1S Date 1 August 1984 Depth 24 II
Salinity (bottom) 00 ppt Temperature (bottom) 198 C No of samp I es 10
Frequency Density (nom2) occurrence ---------------- shy
Taxa (X) X S D
Nuertea 1 100 859 2715 Nellatolllorpha 1 100 859 2715 Nematoda 248 1000 212933 108288 Turbellaria 4 400 3434 4434 ~untb~la Hli~g Oligochaeta
4 206
400 1000
3434 176872
4434 75309
~~igQYli~dli i[t~(gi~ ~QtQpound l binQ~ybt2 sp ~2l~bi Q[i ~2tlgtQ(ila tirisect sectpoundQtel poundl9lla Chironomid larvae
10 1
20 205
1 574
9
500 100 800
1000 100
1000 400
8586 859
17172 176013
859 492836
7727
10709 271 5
14021 48104
271 5 150531
13696
Mean number of organismssample 1284 Standard deviation 290
M b f I 2ean nurn er 0 organIsms III 1102442 Standard deviation 2488B5
H= 211 SD= 071 SR= 1 16 J= 057
A-35
STATION 58 Date 1 August 1984 Depth 55 m Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samp 1es 10
Frequency Densi ty _ ltnom2 ) Total occurrence
Taxa number (7) X SD
Nemertea 1 100 859 2715 Nematoda 22 900 18889 15036 Turbellaria 1 100 859 2715 Oligochaeta 19 700 16313 17385 biiQQgl~QhY~ YiCg~~ 2 200 171 7 3620 ~Q[~i~~l~ m2nil~n2i2 ~Q[QehiYm ~lmQni2
4 164
300 1000
3434 140810
6003 103048
Heleidae larvae 8 500 6869 8868
Mean number of organismssample 221 Standard deviation 111
I 2Mean num ber 0 f organIsms m 189751 Standard deviation 95391
H = L 37 SD= 043 SR= 090 J= 046
A-36
STATION 55 Date 1 August 1984 Depth 15 m Salinity (bottoll) 01 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (i ) X SD
Nemertea 1 100 859 2715 Neutoda 122 1000 104749 7394B Turbellaria 4 300 3434 6003 ~~~~~nt~ secte~poundQa~ Oligochaeta
1 118
100 1000
859 101315
2715 61223
~giQgY~k~~l iot~[m~Qi btbQg~2b~ Y[O ~grQipound~ ~nl~ni b~ngpound~tb~[ Spa
3 1 5 1
200 100 500 100
2576 859
4293 859
5795 2715 4525 2715
~Q[QebiYm ~mQoi sect~QttQ~ ~OQOi Heleidae larvae
42 2 2
800 200 100
36061 171 7 171 7
21341 3620 5430
Chironomid larvae 4 400 3434 4434
Mean number of organismssapIe 306 Standard deviation 169
M b f I 2ean nurn er 0 organIsms m 262732 Standard deviation 145101
H = 198 SD= 067 SR= 1 45 J= 054
A-37
~-- --------------~~-------------
STATION 45 Date 17 August 1984 Depth 61 1
Salinity (bottom) 10 ppt Temperature (bottom) 210 C No of samp 1es 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nematoda 240 1000 206064 130213 ~~h~sect limQ tjQ~~Hi~ fQ[i~~ Oligochaeta
31 2
245
400 100
1000
26617 1717
210357
75228 5430
121374 babgglYQbl~ Yi[~sect 1 100 859 2715 Ostracoda 1 100 859 271 5 biQ~xtb~[ Spa ~~Q~~isect ~[pound~Qisect ~Qgebi HQOi
333 2
143
1000 200
1000
28591 4 171 7
1227BO
106553 3620
106860 sectpoundQUg~ poundg~nsectisect 1738 1000 1492247 68441 7
Mean number of organismssample 2736 Standard deviation 944
M b f I 2ean num er 0 organlslls m 2349130 Standard deviation 810600
H= 172 SD= 056 SR= 079 J= 052
A-38
STATION 18 Date 17 August 1984 Depth 27 III
Sal i ni ty (botto) 01 ppt Temperature (bottom) 214 C No of samples 10
Frequency Density (nom 2 ) occurrence
Taxa (X) X SD
Nematoda 186 1000 159700 62468 ~tgt SPa 2 100 171 7 5430 Turbellaria 8 400 6869 8868 ~~ntbg2 imnipoundQ 12 700 10303 11304 Oligochaeta 283 1000 242984 90509 ~~iQQY~~Y~lls inlgtmggisBivalvia
4 1
400 100
3434 859
4434 271 5
~Qt~i~Y nilnsectisectbimnQpoundttbg[s SPa ~QtQQbi~ islmQDi2
1 17
286
100 900
1000
859 14596
245560
271 5 10747 83461
sectpoundetteln poundDsggnsectisect Chironomid larvae
526 4
1000 3Q0
451624 3434
179610 6003
Mean number of organismssapIe 1330 Standard deviation 162
Mean nurn ber I 20 f organIsms m 1141938 Standard deviation 139389
H= 214 SD= 073 SR= 1 06 J= 060
A-39
STATION 58 Date 17 August 1984 Depth 55 II
Salinity (bottom) 01 ppt Temperature (bottom) 220 C ND of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (7) x S D
Nematoda 68 1000 58385 27689 Turbellar i a 4 200 3434 8295 Oligochaeta 19 800 16313 13084 ~~i~Q~k~~l~ in~~[m~i bitUQ9Y2bYa Yi[~na Bivalvia
3 3 4
300 300 300
2576 2576 3434
4147 4147 6003
gQ[QipoundYl~ mnilDa 1 100 859 2715 binQpoundY~[ sp gQ[Q2UY a~mgnia sect~Qtgl~n ~n~~ni
2 338
6
100 1000 400
171 7 290207
5152
5430 56636 7240
Mean number of organismssample 448 Standard deviation 72
W b f 2lean num er 0 organlsms II 384653 Standard deviation 61988
H = 1 27 SD= 041 SR= 1 02 J= 038
A-40
STATION 55 Date 17 August 1984 Depth 18 m Salinity (bottom) 00 ppt Temperature (bottol) 223 C No of samples 10
Frequency Density (nom 2 ) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 291 1000 249853 118104 Turbellaria 1 100 859 2715 M~ntb~ mni~Q Oligochaeta
1 47
100 1000
859 40354
2715 28347
~~iQQ~sectkY~ll int~[m~gi bitbQQ1YSDY Yi(gn Bivalvia
25 12
6
900 500 400
21465 10303 5152
1231 0 18459 7240
~Q~2ipoundY mnil~ni Ostracoda
11 8
400 600
9445 6869
12442 6773
bmnQpoundYb~r~ SPa 52 1000 44647 19746 ~QrQsbY lmgnisectsQiielo snQ~ni~ Chironomid larvae
43 5
15
1000 400 BOO
36920 4293
12879
21436 6071 8344
Mean number of organismssample 517 Standard deviation 174
M b f I 2ean num er 0 organlsms m 443896 Standard deviation 149431
W = 228 SD= 065 SR= 1 33 J= 062
A-41
STATION 45 Date 29 August 1984 Depth 55 III
Salinity (bottom) 07 ppt Temperature (bottom) 199 C No of samples 10
Frequency Density (noI 2) Total occurrence
Taxa number (X) X SD
Nematoda 192 1000 164851 98380 ~sntbsect limnipoundQlDligochaeta
2 198
200 1000
171 7 170003
3620 67339
~Q[eipoundYls msniln~isect Ostracoda
1 4
100 400
859 3434
2715 4434
bimnQpoundytb[s Spa gQ[Qeniy sect21QOi~ sectpoundQttQlsO poundsOsggOi
164 87
2468
1000 1000 1000
140810 74698
2119025
39283 39460
840890
Mean number of organismssample 311 6 Standard deviation 101 1
ill b f 2nean nUll er 0 organIsms 2675398 Standard deviation 8682B8
W= 116 SD= 036 SR= 060 J= 039
A-42
STATION 18 Date 29 August 1984 Depth 30 bull Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samples 10
Total Frequency occurrence
Densi ty 2
(nom )
Taxa number (~ ) x S D
Nematoda 150 1000 128790 28905 Turbellaria 7 400 6010 9096 ~nh imni~Qj Oligochaeta ~~i~2Y~k~~1 ini~CIDgii bih2g~Qb~ Yi(~U2 Bivalvi a
B 145
1 1 2
600 1000
100 100 200
6869 124497
859 859
171 7
677 3 84732
271S 2715 3620
~Q[Qi~yli miDllgni bimn2pound~ih~C sp ~QtQehiY imQUia Harpacticoida
7 7
265 1
500 300
1000 100
6010 601 0
227529 859
8145 10747
139462 2715
sect~QtiQDi ~Q~Q~i~ Chironomid larvae
2471 2
1000 200
2121601 171 7
1063112 3620
Mean number of organismssample 3067 Standard deviation 121 9
2Mean number 0 f organIsms m 2633326 standard deviation 1046718
H = 1 09 SD= 034 SR= 1 04 J= 029
A-43
STATION 58 Date 29 August 1984 Depth 55 111
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (noI 2 ) Total occurrence -----------------
Taxa nUllber (X) X SD
Nemertea 4 400 3434 4434 Nuatoda 64 1000 54950 25016 Turbellaria 9 400 7727 11047 ~Hl~b limli~Q19 Oligochaeta
1 37
100 1000
859 31769
2715 19006
i~Qyh il(~~ bHtlQSlheln Yl Bivalvia
4 4
20
200 300 400
3434 3434
17172
8215 6003
26541 ~e(ijY l bQ~dlH sp
26 1
700 100
22324 859
25662 2715
~Q[QQhil iQ sectjgUell HD Heleidae larvae
418 20
1
1000 800 100
358895 17172
859
129443 12799 271 5
Mean number of organismssample 609 Standard deviation 175
nean num b er 0 f organIsms 1 111 2 522887 Standard deviation 150164
H= 176 SD= 051 SR= 1 30 J= 047
A-44
I I
I
I
STATION SS
Date 29 August 1984 Depth 21 1
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (no2) Total occurrence
Taxa nUllber (X) x S D
Nematoda ISO 1000 128790 37969 Turbellaria 1 100 859 271 5 Oligochaeta 48 1000 41213 16088 ~i~g~sect~~l iQ~~mgi bi~QQg~gb~sect ~i~nsect
10 14
600 600
eSB6 12020
9050 14137
Bivalvia 4 200 3434 7240 ~Q[Q~Yl niQaa Ostracoda
15 7
700 SOO
12879 6010
15806 7069
bmQg~~~b~ SPa 14 800 12020 8295 ~g[gaby mgni sect~g~~Qn ~ngnai Chironomid larvae
IB4 25 9
1000 900 700
157982 21465
7727
35563 16810 6335shy
Mean number of organismssample 481 Standard deviation B6
2Mean number 0 f organlsms m 412987 Standard deviation 74131
H= 24S SD= 074 SR= 1 23 J= 068
A-45
STATION 45 Date 14 September 1984 Depth 61 11
Salinity (bottom) 03 ppt Temperature (bottom) IB4 C No of samples 10
---------------------------------~----------------------------------------
Taxa TotalnUlllDer
Frequency occ~~~ence
Density (no 2) -----X-------sect7B
Nematoda 189 1000 162275 85233 t1tQ SPa
Turbellaria 2 2
200 100
171 7 171 7
3620 5430
~~~nIng limoifQl t1QQQDi~ flQriQ Oligochaeta
5 19
142
400 800
1000
4293 1631 3
121921
6071 12442 30504
~QQifYl mDl~D bimoQpoundt1hgr Spa Cumacea
19 184
2
800 1000 200
1631 3 157982
171 7
130B4 69541 3620
~Q[QnniYm ~~lmQDi Harpacticoida
118 1
1000 100
10131 5 B59
43367 2715
sectfQIIQD fOQgO Chironomid larvae
1780 1
1000 100
1528308 859
673586 2715
Mean number of organismssample 2464 Standard deviation 874
M ean num b er f 20 organlsms 2115590 Standard deviation 750305
H= 151 SD= 046 SR= 1 07 J= 041
A-46
STATION 18 Date 14 September 1984 Depth 21 III
Salinity (bottom) 01 ppt Temperature (botto) 182 C No of samples 10
Frequency DenSity (nom 2 ) Total occurrence ---------------- shy
Taxa nUlDber (i) X SD
Nemertea 1 100 859 271 5 Nematoda 186 1000 159700 44925 Turbellaria 16 400 13738 20717 ~~Dth~~ limni~Ql Oligochaeta
13 55
700 900
11162 47223
9096 30085
~Q~ei~Yl nil~Qi~ 17 900 14596 7069 bimDg~lbg[ Spa b 500 5152 6003 ~Q[Q2niY ~lgQi~ Harpacti coi da
562 2
1000 200
482533 171 7
136766 3620
sectpoundQttQ~Q~ ~n~ni 791 1000 679153 324290
Mean number of organismssample 1649 Standard deviation 447
I 211ean nUll ber 0 f organIsms I 1415831 Standard deviation 384136
H= 179 SD= 064 SR= 084 J= 054
A-47
STATION 58 Date 14 September 1984 Depth 58 III
Salinity (bottom) 01 ppt Temperature (bottom) 191 C No of sampl es 10
-------------------------------------------~------------------------------Frequency Density (nom 2 )
Total occurrence Taxa number eX) X SD
Nemertea 1 100 859 2715 Nematoda 55 1000 47223 18658 Turbellaria 10 500 8586 11448
1 100 859 2715 Oligochaeta 41 1000 35203 17850 ~~iQQ~~gll iu1g[m~i ~Q[Q~Yl nilD bimnQ~Y~h[ Spa ~Q[Q~hiYm lmgui sectpoundQilg1D poundU2D Chironomid larvae
4 10
2 277
23 4
100 500 200
1000 700 300
3434 8586 171 7
237832 19748 3434
10861 11448 3620
50561 21051 6003
Mean number of organismssample 428 Standard deviation 51
M b f 2ean num er 0 organIsms III 367481 Standard deviation 43743
H= 179 SD= 055 SR= 114 J= 052
A-48
I I
STATION SS Date 14 September 1984 Depth 21 II
Salinity (bottom) 01 ppt Temperature (bottom) 190 C No of samples 10
--------------------------------------------------------------------~-----
Frequency Density (no1I2) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 102 1000 87577 39200 Oligochaeta 34 700 29192 31142 ~iQ2Y~y1 int(mgi~ bithQgl~en~ Yi(gDsect ~Q(~i~Y m~DilgDsecti~ bimDQamp~1h(sect sp ~2(QQhiY slmQD 2poundQiiQlsD ~sD~g~nsecti Chironomid larvae
36 18 16 17
100 16
3
1000 600 800 700
1000 800 300
30910 15455 13738 14596 85860 13738 2576
157BO 20953 10078 14621 32126 10861 4147
Mean number of organismssample 342 Standard deviation 97
2Mean nUllber 0 f organlsms m 293641 Standard deviation 83617
H= 262 SD= 079 SR= 095 J= 083
A-49
Appendix B--Sediment particle size and organic content of the Cathlamet Bay
benthic invertebrate sites 13 March through 14 September
1984
iii
1
Station 18a 48 54 57
Survey 1 1 1 1
Month March March March March
Day 13 13 13 13
Particle size (mm) Phib Percent by weight
gt 40 -2 000 000 000
20- 40 -1 000 000 000
10- 20 0 000 009 000
05- 10 1 018 1079 032
025- 050 2 545 7583 2468
0125- 025 3 8731 1225 6783
00625-0125 4 491 037 657
lt0625 (5-12) 216 067 060
Organic Content 160 116 128
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
b Phi= -log2(sediment particle diameter in mm)
B-1
Station 18a 48 54 57
Survey 2 2 2 2
Month April April April April
Day 5 5 5 5
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 003 093 000
05shy 10 1 005 31 75 023
025shy 050 2 087 5904 2368
0125- 025 3 6316 750 7155
00625-0125 4 3056 026 427
lt0625 (5-12) 533 052 028
Organic Content 081 077 065
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-2
Station 45 55 58
Survey 3 3 3 3
Month April April April April
Day 18 18 18 18
Particle size (mm)
gt 40
Phi
-2
Percent by weight
000 000 000
20shy 40 -1 000 000 000
10shy 20 0 005 009 004
05shy 10 1 010 027 013
025shy 050 2 015 095 225
0125- 025 3 097 536 6111
00625-0125 4 453 2821 2205
lt0625 (5-12) 9420 6511 1442
Organic Content 31 42 14
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-3
Station 18a 45 55 58
Survey 4 4 4 4
Month May May May May
Day 4 4 4 4
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 021
05shy 10 1 000 065 063
025shy 050 2 012 370 230
0125- 025 3 091 4099 4696
00625-0125 4 322 3650 3052
lt0625 (5-12) 9575 1810 1939
Organic Content 330 180 160
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-4
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
5
May
17
000
000
005
016
217
5862
2729
1170
100
45 55 58
5 5 5
May May May
17 17 17
Percent by weight
000 000
000 000
005 008
113 031
325 274
1903 5613
2784 2401
4870 1672
240 110
000
000
000
010
020
079
397
9494
390
B-5
Station 18al 45 55 58
Survey 6 6 6 6
Month June June June June
Day 6 6 6 6
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 020
05shy 10 1 005 051 027
025shy 050 2 005 301 1 79
0125- 025 3 074 3189 5404
00625-0125 4 599 4118 2885
lt0625 (5-12) 9317 2332 1485
Organic Content 340 240 150
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-6
Station
Survey
Month
Day
Particle size Cmm) Phi
gt 40 -2
20shy 40 -1
10shy 20 a
05shy 10 1
025shy 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
7
June
18
000
000
005
029
138
3917
4143
1768
180
45
7
June
18
55 58
7 7
June June
18 18
Percent by weight
000
000
000
010
020
080
427
9464
310
000 000
000 000
000 007
011 022
057 190
957 5286
3023 2642
5957 1853
1 70 110
B-7
Station 18al 45 55 58
Survey 8 8 8 8
Month July July July July
Day 2 2 2 2
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 006 002 006
05shy 10 1 006 0l3 023
025shy 050 2 017 088 171
0125- 025 3 074 2712 5365
00625-0125 4 552 3892 3081
lt0625 (5-12) 9345 3294 l354
Organic Content 410 210 160
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-8
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
9
July
17
000
000
003
013
130
4294
4434
1127
130
45
9
July
17
Percent
000
000
000
006
012
051
046
9885
290
55
9
July
17
by weight
000
000
019
048
091
628
3616
5597
030
58
9
July
17
000
000
004
022
158
5017
3148
1650
140
B-9
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18al
10
August
1
45
10
August
1
55
10
August
1
58
10
August
1
Percent by weight
000 000
000 004
001 004
009 018
018 088
098 306
049 2510
9824 7070
000
005
045
763
3604
4495
932
156
100 190 060
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-10
Station 18 45 55 58
Survey 11 11 11 11
Month August August August August
Day 17 17 17 17
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000 000
20- 40 -1 005 000 000 000
10- 20 0 021 003 000 210
05- 10 1 064 009 000 159
025- 050 2 226 027 045 2656
0125- 025 3 3259 131 712 3719
00625-0125 4 4327 195 1737 1159
lt0625 (5-12) 2098 9635 7506 2097
Organic Content 210 300 160 100
Ii I
B-11
Station
Survey
Month
Day
Particle size (mm) Phi
gt40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
12
August
29
000
000
012
046
186
3465
4498
17 93
241
45
12
August
29
55 58
12 12
August August
29 29
Percent by weight
000
000
002
009
026
118
189
9656
540
000 000
000 000
003 011
011 028
055 1013
859 5033
1596 1827
7476 2089
1 70 120
B-12
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
_-------------------- shy
B-13
STATION 18 Date 17 May 1984 Depth 30 m Salinity (bottom) 00 ppt Temperature (bottom) 122 C No of samples 12
Frequency Density (nom2) Total occurrence -----------------
Taxa number (X) X SD
Nematoda 50 833 35775 22815 ~ntb limnipoundQl 3 Oligochaeta 97
250 833
2147 69404
3883 48495
~igQ~~k~ intr~ 27 ~QrQipoundY mnin~i~ 5
667 333
19319 3S7S
19068 5740
Ostracoda 1 83 716 2479 bimnQpound~nr sp 5 ~Q(Q~bY ~mQni S4 ~Q(Q~niY ~QinipoundQ(n 3
333 833 250
3578 60102
2147
5740 43780 3883
fgnQ2Q(i bQ~i 1 sectpoundQtgO poundnQn~i 2 Chironomid larvae 4
83 167 250
716 1431 2862
2479 3342 5592
Mean number of organismssample 235 Standard deviation 116
nean nURl b er 0 f organlslls II 2 201771 Standard devi ati on 99221
H= 236 SD= 075 SR= 1 35 J= 066
A-15
STATION 58 Date 17 May 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) 123 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nemertea 2 100 171 7 5430 Nematoda 75 1000 64395 34404 ~~2Qih~a limQi~Q 2 200 171 7 3620 Oligochaeta 60 1000 51516 33376 ~~igQY~~~12 iQ~[~~gi 2 200 171 7 3620 bitQQ9~Bh~sect Yr~Qsect 3 200 2576 579~
gQ[Qi~Yl ID2Dil~nsectisect Ostracoda
6 6
500 400
5152 5152
6003 8295
binQ~~nr[ sp gg[QQOYm mQQsect sect~QttQn 5n2Q~nsectia Chironomid larvae
2 34
1 1
200 1000
100 100
171 7 29192
859 859
3620 12927 271 5 2715
Mean number of organismssample 194 Standard deviation
2Mean nurn ber 0 f organIsms fA 166568 Standard deviation 56259
H= 225 SD= 072 SR= 1 45 J= 063
A-16
66
STATION 55 Date 17 May 1984 Depth 24 II
Salinity (bottom) 00 ppt Telllperature (bottom) 126 C No of samples 10
Total Frequency occurrence
Taxa nUllber (X) X SD --------------------------------------------------------------~-----------
Nematollorpha 2 200 171 7 3620 Nematoda 63 1000 54092 35297 Oligochaeta 94 1000 80708 44004 ~~iQQY~k~~l iQt~(m~Qi bitnQg~Qh~~ Yi[~Q gQ[QipoundY~ mni~Q~i Ostracoda
10 9 4 2
600 800 300 100
8586 7727 3434 171 7
9050 4874 6003 5430
bimnQ~~ln~[e sp ~Q(QQbiYm mQD ~Q[QQbiYm 2inipoundQ[n~ Chironomid larvae
6 142
3 1
600 1000 200 100
5152 121921
2576 859
4434 50682 5795 2715
Mean number of organismssample 336 Standard deviation 62
2Mean num ber 0 f organisms m 288490 Standard deviation 53421
H= 214 SD= 071 SR= 119 J= 062
A-17
STATION 45 Date 1 June 1984 Depth 61 m Salinity (bottom) 01 ppt Temperature (bottom) 139 C No of samples 10
Total Frequency occurrence
Density (no2)
Taxa nUllber (1) X SD
Nematoda 174 900 149396 132347 Turbellaria 5 200 4293 10898 ~~~QiQ~sect tmQtpoundQ~ ~QQsectQ flQi~sect Oligochaeta ~~iQQysecttygl~ iQl~rm~~i2 ~Q[Qi~~l~ ~~DilgDsectisect Ostracoda
5 20
190 103
12 5
400 900
1000 900
60 (I 400
4293 17172
163134 88436 10303 4293
6071 8095
92563 51524 11304 6071
bimnQpoundytng[ sp ~gQmYsectisect IDg[pound~Qisect ~Q[QQhi~m sectlmQDisect sectpoundQtiQlsectQ pound~Qgsectisect ChironQmid larvae
33 1
10 375
2
900 100 700
1000 200
28334 859
8586 321975
171 7
17196 2715 7010
179201 3620
Mean number of organismssample 935 Standard deviation 254
nurn b 0 f 2lean er organlsms m 802791 Standard deviation 218423
H= 239 SD= 075 SR= 1 22 J= 065
A-18
STATION 18 Date 1 June 1984 Depth 30 AI
Salinity (bottom) 00 ppt Temperature (bottom) 134 C No of samples 11
Frequency Density (no 1m2)
Taxa Total number
occurrence (X)
---------------- shyX SD
Turbellaria 14 636 10928 1157 7 ~~~Qltlg~ ilipoundQ~ Oligochaeta
10 178
727 1000
7805 138937
601 6 67913
~~iQQy~tY~l~ ill~[m~Qi~ 122 636 95227 93619 ~Q[Qipound~ l~i~lsectisect Ostracoda
7 1
455 9 1
5464 78 1
6946 2589
billQylhg[ Spa 16 818 12489 10420 GQ[QQQil HQi~ 139 1000 108496 70934 gQ[Qebi secteiifQ[~ sectQiiQi2 ~Q~sectisect Diptera pupae
1 2 1
9 1 182
11 1
781 1561 781
2589 3473 2589
Chironomid larvae 2 182 1561 3473
Mean number of organismssample 714 Standard deviation 284
nean num b er 0 f organlsms m 2 612728 Standard deviation 244249
H= 232 SD= 075 SR= 1 25 J= 063
A-19
STATION 58 Date 1 June 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 138 C No of samples 10
Frequency Density (noI 2 ) Total occurrence
Taxa number (X) X SD
Nematoda 173 1000 148538 47383 Turbellaria 3 300 2576 4147 Oligochaeta 53 1000 45506 32139 ~giQgY2k~g~ ini~[m~Qi~ bQg91YehY2 Yi[~nsect ~Qr~i~Yl m~nl~n~i
26 1
10
600 100 500
22324 859
8586
3391 2 2715
13424 bimnQpound~Q~[ sp ~Q9~m[Y poundgnitYpoundQlysect ~QtQehiYm ~lQni
4 1
46
200 100
1000
3434 859
39496
8295 2715
22243 Chironomid larvae 1 100 859 271 5
Mean number of organismssample 318 standard deviation 103
M b f I 2ean num er 0 organlsms III 273035 Standard deviation 88842
H = 1 99 SD= 065 SR= 1 08 J= 060
A-20
STATION 55 Date 1 June 1984 Depth 27 m Salinity (bottom) 00 ppt Temp era t u r e (b 0 t tom) 140 C No of samples 10
Frequency Density (nom 2 ) Total occurrence
Taxa nueber (X) X SD
Nematoda 157 1000 134800 69524 Turbellaria 9 400 7727 13696 tlHl~lk ~2~~iQH 1 100 859 2715 Oligochaeta 49 1000 42071 32745 ~~iQQysect~gl~ S[l9sect bHbQghQb~~ Yirl~
10 1
400 100
8586 859
12799 2715
tQ[Qpoundls l2lilUsect bilQHSbg[ sp ~QrQQbil nllQisectHarpacticoida
4 7
134 1
400 500
1000 100
3434 6010
115052 859
4434 7069
44742 271 5
sectpoundQUQlls poundsQgn~sect Chironomid larvae
1 1
100 100
859 859
271 5 2715
Hydracarina 1 100 859 2715
Hean number of organismssample 376 Standard deviation 132
M b f 2ean num er 0 organIsms m 322834 Standard deviation 113127
H= 202 SD= 068 SR= 1 40 J= 055
A-21
STATION 45 Date 18 June 1984 Depth 67 m Salinity (bottom) 01 ppt Temperature (bottom) 149 C No of samples 10
Frequency Density (nom2)
Taxa Total nUllber
occurrence ex) i SD
Nematoda 109 1000 93587 3891 7 Turbell ari a 3 200 2576 5795 ~g~tbg limoipoundQl Q~Qni2 fQ(i~2 Oligochaeta ~gigQ~~Y inl[ggi ~Q[QiSY2 moilo Ostracoda
3 2
194 44
7 3
200 200
1000 1000 200 200
2576 171 7
16656B 37778 6010 2576
5795 3620
118364 36020 12831 5795
bimoQampl~n~[2 sp ~Q[QQbiYm lmgoi Harpacticoida sectpoundQQ1202 pound2022Osect Chironomid larvae
68 1 1
113 2
900 100 100
1000 200
58385 859 859
97022 171 7
97627 2715 2715
73976 3620
Mean number of organismssa_pie 550 Standard deviation 371
Mean nUll ber 0 f organIsms 2II 472230 Standard deviation 318519
H= 242 SD= 077 SR= 1 32 Ja 065
A-22
STATION 18 Date 18 June 1984 Depth 34 m Salinity (bottom) 00 ppt Temperature (bottom) 155 C No of samples 10
Frequency Density (nom 2) Total occurrence ----------------shy
Taxa nUlber (Z) X SD
Neutoda 291 1000 249853 138826 Turbellaria 1 100 859 2715 ~~n~~nki~ sectQ~~iQ~2 ~g~ntbg2 limni~Q9 Oligochaeta
1 3
123
100 300
1000
859 2576
105608
271 5 4147
48240 ~~igQY~~~~9 int~(mgii ~Q[~i~~~ mini~ni bimnQ~ylbg(~ Spa
67 6 5
1000 500 400
57526 5152 4293
40485 6003 6071
~Q(QebiYm ~imQnisect Harpacticoida
80 2
1000 200
68688 171 7
41276 3620
sect~QttQini ~2nig~n~i Chironomid larvae
2 4
200 300
171 7 3434
3620 6003
Mean number of organismssample 585 Standard deviation 194
I 2Mean urn b er 0 f organIsms m 502281 Standard deviation 166943
H= 203 SD= 068 SR= 1 20 J= 057
A-23
STATI ON 58 Date 18 June 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (noI 2) Total occurrence
TaKa number (X) X SD
Nellertea 2 100 1717 5430 Nematoda 160 1000 137376 6361 1 Turbellaria 4 400 3434 4434 Oligochaeta 36 1000 3091 0 14705 ~iQQYik~ Q1rQ 4 300 3434 6003 bitnQgl~ebysect YrDsect ~Q[QiY~ ~~nni biQQpoundY1h[ sp ~Q[Qeng ~ilQD Chironomid larvae
3 1 3
61 1
300 100 300
1000 100
2576 859
2576 52375
859
4147 2715 4147
1428 1 2715
Chironollid pupae 1 100 859 271 5
Mean number of organismssample 276 standard deviation 72
nean nurn b er 0 f organIsms I 2 236974 Standard deviation 61410
H = 1 78 SD= 060 SR= 1 23 J= 051
A-24
STATION 55 Date 18 June 1984 Depth 18 m Salinity (bottom)1 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (no 1m2) occurrence
Taxa (X) X SD
Nematoda 160 1000 137376 43967 Turbellaria 1 100 859 271 5 Oligochaeta 61 1000 52375 31985 ~~iQQY~kY~~ int~[mQi~ ~Q[Qipound~l~ m~nini~ biIDnQ~Ylb[s sp
3 3 3
300 300 300
2576 2576 2576
4147 4147 4147
~Q[Q~bi~ ~slIDQni~ Chironomid larvae
85 6
1000 600
72981 5152
34165 4434
Mean number of organismssample 322 Standard deviation 75
2Mean number 0 f organIsms m 276469 Standard deviation 64099
H= 178 5D= 065 SR= 0B4 J= 059
A-25
Frequency Density (no2) occurrence -----------------
Taxa (7) X SD
Nematoda 104 1000 89294 47409 Turbell ar i a 1 100 859 2715 ~~~nQ~sect imni~Q~ tjQQsectQlis flQig~ Oligochaeta
2 1
297
100 100
1000
171 7 859
255004
5430 271 5
146273 ~~i~QYsect~Y~lls ilr2is gQrQi~y~ IDDilDia
24 4
600 300
20606 3434
27212 6003
Ostracoda 2 200 171 7 3620 biDQSy~b~C~ sp M~QYsectisect m~r~~Qi ~QrQeniy QD Harpacticoida
157 1 1 1
900 100 100 100
134800 859 859 859
73197 2715 2715 2715
sectpoundQttQDs SsDQD 113 900 97022 61656
STATION 45 Date 2 July 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) No of samples 10
172 C
Mean number of organismssample 708 Standard deviation 339
M ean num b er f 20 organisms 607889 Standard deviation 290B22
H= 216 SD= 073 SR= 1 27 J= 058
1-26
STATION 18 Date 2 July 1984 Depth 24 WI
Sal inity (bottom) 00 ppt Temperature (bottom) 172 C No of samples 10
--------------------------------~-----------------------------------------Frequency Density (nom2)
Total occurrence Taxa number (7) X SD
Nematoda 202 1000 173437 113532 ~~~nih~sect mnpoundQ~ Oligochleta
4 102
400 1000
3434 87577
4434 54873
~~igQYsect~Y~12 inl~rmgi2 ~Q[~poundYl~ m~ni~nsectisect bimnQpoundylh~[~ Spa
115 4
15
900 300 900
98739 3434
12879
100720 6003 9274
~Q[QQniY~ sect~QDi~ 55 900 47223 40525 Harpacticoida 1 100 859 2715 sectpoundQiiQlD SDg~DEisect Chironomid larvae
2 6
200 400
1717 5152
3620 7240
Hymenoptera 1 100 859 2715 Hydracarina 1 100 859 2715
Mean number of organismssample 508 Standard deviation 253
2Mean num ber 0 f organIsms m 436169 Standard deviation 217580
H= 225 SD= 074 SR= 1 22 J= 063
A-27
STATION 58 Date 2 July 1984 Depth 58 1
Salinity (bottom) 00 ppt Temperature (bottom) IBO C No of samples 10
Frequency Density (no2) Total occurrence
Taxa number ltX) i SD
Nematoda 151 1000 129649 42729 Turbellaria 1 100 859 2715 01 i gochaeta 41 1000 35203 22698 ~~i~e~~~ int~~m~~ 3 200 2576 5795 btbQglYRhY~ Yir~n~ ~e~~ampy mni~niii bimQeamp~tb~ sp ~e~eQhiY ~mQni Chironomid larvae
1 4 2
68 1
100 300 200
1000 100
859 3434 171 7
58385 859
271 5 6003 3620
1557 1 2715
Mean number of organisassample 272 Standard deviation
I 2Mean num ber 0 f organIsms I 233539 Standard deviation 62546
H = 1 69 SD= 061 SR= 099 J= 053
A-28
73
STATION 55 Date 2 July 1984 Depth 15 III
Salinity (bottom) 00 ppt Temperature (bottom) 182 C No of samples 10
Frequency Density (nom2) occurrence
Taxa (X) X SD
Nematoda 184 1()00 157982 5264B Turbellaria 1 100 859 271 5 Oligochaeta ~~iQQ~sect~Y~ll~ n~[~~Qi~ bitnggYQDYsect Yi[~nsect ~QrQipoundM2 m2ni~nsectisect bimnQpoundYn~[2 sp ~QrQQhiM Qni Harpacticoida
91 2 1 B 2
96 2
1000 200 100 500 200
1000 200
78133 171 7 859
6869 171 7
82426 1111
26058 3620 271 5 1890 3620shy
25980 3620
ChirDnomid larvae 5 400 4293 6071 Chironolllid pupae 1 100 859 2715
Mean number of organismssample 393 Standard deviation 53
2t1ean nUllber Df organlsms III 337430 Standard deviatiDn 45080
H= 187 SD= 067 SR= 116 J= 054
A-29
STATION 45 Date 17 Jul y 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (X) X SD
Nematoda 215 1000 184599 45837 ~~n~b~~ imDipoundQ Qe~Qni fllHi2
3 1
300 100
2576 859
4147 2715
Oligochaeta 305 1000 261873 147955 ~~iQQY~k~ in~rm~2i ~Qr~ipoundYl IDniln~i~ Ostracoda
17 1 2
500 100 200
14590 859
171 7
22554 2715 3620
bmnQpound~ihr sp ~QCQQhiY ~lQD~
176 1
1000 100
151114 859
57125 2715
Harpacticoida 4 300 3434 6003 sectQ~~Qn poundnQnai~ Chironomid larvae
91 5
1000 400
78133 4293
61310 6071
Mean number of organismssample 821 Standard deviation 275
M b f 2ean num er 0 organlsms m 70491 1 Standard deviation 236369
H= 215 SD= 073 SR= 114 J= 060
A-30
STATION 18 Date 17 Jul y 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom 203 C No of samples 10
Frequency Density (001 2 Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 339 1000 291065 119140 Turbellaria 3 200 2576 5795 ~~2~b~~ limnipoundQ12Oligochaeta
4 18S
300 1000
3434 161417
6003 89393
~~iQQy~~~ls in~(ID~Qi bim~Qampy~bg(2 Spa
34 16
800 700
29192 1373B
22967 15252
~g(gebi~m ~21mQni2 Harpacticoida
52 3
1000 200
44647 2576
25212 5795
2ampQ11Q1202 ampS02Qg~2i2 Chironomid larvae
18 10
700 700
15455 8586
13904 701 0
Mean number of organi$mssample 667 Standard deviation IBB
H ean nurn b er 1 20 f organIsms m 572686 Standard deviation 161750
H = 1 99 SD= 065 SR= 090 J= 060
A-31
STATION 58 Date 17 July 1984 Depth 55 AI
Salinity (bottom) 00 ppt Temperature (bottom) 197 C No of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nellatoda 173 1000 14853B 66390 Turbellaria 1 100 859 271 5 ~~~n~hu ini~QA Oligochaeta
1 46
100 1000
859 39496
2715 26293
~gipoundQy~~ygl2 in~rJg~i~ b1nQglYRnY~ Yi( Bivalvia
6 2 1
400 200 100
5152 1717 859
8295 3620 271 5
ei~ IDnH~n~i~ 2 200 171 7 3620 Ostracoda 1 100 959 271 5 biIDQHlh~( Spa ~Q(QRbim ~21Qnisect Diptera pupae
1 94
1
100 1000 100
859 80708
859
2715 35332 2715
Heleidae 1arvae 5 500 4293 4525 Chironomid larvae 1 100 859 2715
Mean number of organismssample 335 Standard deviatiDn 113
Mean number of organismsRI2 287631 Standard deviation 97413
H= 1 86 SO= 064 SR= 155 J= 049
A-32
STATION 55 Date 17 July 1984 Depth 18 m Sali nity (bottom) 00 ppt TeAlperature (bottom) 199 C No of samples 10
Frequency Density (nom2 ) occurrence
Taxa (X) x S D
Nematoda 61 1000 52375 33972 Turbellaria 1 100 859 2715 Oligochaeta 24 900 20606 11590 ~~i2QY~k~~1 iOi[2 bimDQ~xlb~r sp ~Q[QQhi~ sectgni~ Chironomid larvae
3 1
38 3
200 100
1000 300
2576 859
32627 2576
5795 2715
19326 4147
Mean number of organismssample 131 standard deviation 54
M b f 2ean num er 0 organIsms 112477 Standard deviation 46757
H= 184 SD= 066 SR= 085 J= 065
bull
A-33
STATION 45 Date 1 August 1984 Depth 58 m Sal i nity (bottoll) 03 ppt Temperature (bottom) 203 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa nUllber (X) X SD
Nematoda 145 1000 124417 52344 Turbellaria 1 100 859 2715 Mmth~sect iHpoundQ~ Q~~Qi ilQ[i9Oligochaeta
5 3
196
500 300
1000
4293 2576
168286
4525 4147
91064 ~igQYsect~~li int9i Ostracoda
2 3
100 300
171 7 2576
5430 4147
bimnQpoundtl sp ~Q[Q2hiY sectlQni~
240 6
1000 600
206064 5152
73526 4434
sectpoundQtQl poundngnai~Helei dae larvae
1862 1
1000 100
1598713 859
966134 271 ~
Mean number of organismssample 2464 Standard deviation 1156
211 ean num ber 0 f organIsms II 2115590 Standard deviation 992518
H= 124 SD= 041 SR= 089 J= 036
A-34
STATION 1S Date 1 August 1984 Depth 24 II
Salinity (bottom) 00 ppt Temperature (bottom) 198 C No of samp I es 10
Frequency Density (nom2) occurrence ---------------- shy
Taxa (X) X S D
Nuertea 1 100 859 2715 Nellatolllorpha 1 100 859 2715 Nematoda 248 1000 212933 108288 Turbellaria 4 400 3434 4434 ~untb~la Hli~g Oligochaeta
4 206
400 1000
3434 176872
4434 75309
~~igQYli~dli i[t~(gi~ ~QtQpound l binQ~ybt2 sp ~2l~bi Q[i ~2tlgtQ(ila tirisect sectpoundQtel poundl9lla Chironomid larvae
10 1
20 205
1 574
9
500 100 800
1000 100
1000 400
8586 859
17172 176013
859 492836
7727
10709 271 5
14021 48104
271 5 150531
13696
Mean number of organismssample 1284 Standard deviation 290
M b f I 2ean nurn er 0 organIsms III 1102442 Standard deviation 2488B5
H= 211 SD= 071 SR= 1 16 J= 057
A-35
STATION 58 Date 1 August 1984 Depth 55 m Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samp 1es 10
Frequency Densi ty _ ltnom2 ) Total occurrence
Taxa number (7) X SD
Nemertea 1 100 859 2715 Nematoda 22 900 18889 15036 Turbellaria 1 100 859 2715 Oligochaeta 19 700 16313 17385 biiQQgl~QhY~ YiCg~~ 2 200 171 7 3620 ~Q[~i~~l~ m2nil~n2i2 ~Q[QehiYm ~lmQni2
4 164
300 1000
3434 140810
6003 103048
Heleidae larvae 8 500 6869 8868
Mean number of organismssample 221 Standard deviation 111
I 2Mean num ber 0 f organIsms m 189751 Standard deviation 95391
H = L 37 SD= 043 SR= 090 J= 046
A-36
STATION 55 Date 1 August 1984 Depth 15 m Salinity (bottoll) 01 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (i ) X SD
Nemertea 1 100 859 2715 Neutoda 122 1000 104749 7394B Turbellaria 4 300 3434 6003 ~~~~~nt~ secte~poundQa~ Oligochaeta
1 118
100 1000
859 101315
2715 61223
~giQgY~k~~l iot~[m~Qi btbQg~2b~ Y[O ~grQipound~ ~nl~ni b~ngpound~tb~[ Spa
3 1 5 1
200 100 500 100
2576 859
4293 859
5795 2715 4525 2715
~Q[QebiYm ~mQoi sect~QttQ~ ~OQOi Heleidae larvae
42 2 2
800 200 100
36061 171 7 171 7
21341 3620 5430
Chironomid larvae 4 400 3434 4434
Mean number of organismssapIe 306 Standard deviation 169
M b f I 2ean nurn er 0 organIsms m 262732 Standard deviation 145101
H = 198 SD= 067 SR= 1 45 J= 054
A-37
~-- --------------~~-------------
STATION 45 Date 17 August 1984 Depth 61 1
Salinity (bottom) 10 ppt Temperature (bottom) 210 C No of samp 1es 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nematoda 240 1000 206064 130213 ~~h~sect limQ tjQ~~Hi~ fQ[i~~ Oligochaeta
31 2
245
400 100
1000
26617 1717
210357
75228 5430
121374 babgglYQbl~ Yi[~sect 1 100 859 2715 Ostracoda 1 100 859 271 5 biQ~xtb~[ Spa ~~Q~~isect ~[pound~Qisect ~Qgebi HQOi
333 2
143
1000 200
1000
28591 4 171 7
1227BO
106553 3620
106860 sectpoundQUg~ poundg~nsectisect 1738 1000 1492247 68441 7
Mean number of organismssample 2736 Standard deviation 944
M b f I 2ean num er 0 organlslls m 2349130 Standard deviation 810600
H= 172 SD= 056 SR= 079 J= 052
A-38
STATION 18 Date 17 August 1984 Depth 27 III
Sal i ni ty (botto) 01 ppt Temperature (bottom) 214 C No of samples 10
Frequency Density (nom 2 ) occurrence
Taxa (X) X SD
Nematoda 186 1000 159700 62468 ~tgt SPa 2 100 171 7 5430 Turbellaria 8 400 6869 8868 ~~ntbg2 imnipoundQ 12 700 10303 11304 Oligochaeta 283 1000 242984 90509 ~~iQQY~~Y~lls inlgtmggisBivalvia
4 1
400 100
3434 859
4434 271 5
~Qt~i~Y nilnsectisectbimnQpoundttbg[s SPa ~QtQQbi~ islmQDi2
1 17
286
100 900
1000
859 14596
245560
271 5 10747 83461
sectpoundetteln poundDsggnsectisect Chironomid larvae
526 4
1000 3Q0
451624 3434
179610 6003
Mean number of organismssapIe 1330 Standard deviation 162
Mean nurn ber I 20 f organIsms m 1141938 Standard deviation 139389
H= 214 SD= 073 SR= 1 06 J= 060
A-39
STATION 58 Date 17 August 1984 Depth 55 II
Salinity (bottom) 01 ppt Temperature (bottom) 220 C ND of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (7) x S D
Nematoda 68 1000 58385 27689 Turbellar i a 4 200 3434 8295 Oligochaeta 19 800 16313 13084 ~~i~Q~k~~l~ in~~[m~i bitUQ9Y2bYa Yi[~na Bivalvia
3 3 4
300 300 300
2576 2576 3434
4147 4147 6003
gQ[QipoundYl~ mnilDa 1 100 859 2715 binQpoundY~[ sp gQ[Q2UY a~mgnia sect~Qtgl~n ~n~~ni
2 338
6
100 1000 400
171 7 290207
5152
5430 56636 7240
Mean number of organismssample 448 Standard deviation 72
W b f 2lean num er 0 organlsms II 384653 Standard deviation 61988
H = 1 27 SD= 041 SR= 1 02 J= 038
A-40
STATION 55 Date 17 August 1984 Depth 18 m Salinity (bottom) 00 ppt Temperature (bottol) 223 C No of samples 10
Frequency Density (nom 2 ) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 291 1000 249853 118104 Turbellaria 1 100 859 2715 M~ntb~ mni~Q Oligochaeta
1 47
100 1000
859 40354
2715 28347
~~iQQ~sectkY~ll int~[m~gi bitbQQ1YSDY Yi(gn Bivalvia
25 12
6
900 500 400
21465 10303 5152
1231 0 18459 7240
~Q~2ipoundY mnil~ni Ostracoda
11 8
400 600
9445 6869
12442 6773
bmnQpoundYb~r~ SPa 52 1000 44647 19746 ~QrQsbY lmgnisectsQiielo snQ~ni~ Chironomid larvae
43 5
15
1000 400 BOO
36920 4293
12879
21436 6071 8344
Mean number of organismssample 517 Standard deviation 174
M b f I 2ean num er 0 organlsms m 443896 Standard deviation 149431
W = 228 SD= 065 SR= 1 33 J= 062
A-41
STATION 45 Date 29 August 1984 Depth 55 III
Salinity (bottom) 07 ppt Temperature (bottom) 199 C No of samples 10
Frequency Density (noI 2) Total occurrence
Taxa number (X) X SD
Nematoda 192 1000 164851 98380 ~sntbsect limnipoundQlDligochaeta
2 198
200 1000
171 7 170003
3620 67339
~Q[eipoundYls msniln~isect Ostracoda
1 4
100 400
859 3434
2715 4434
bimnQpoundytb[s Spa gQ[Qeniy sect21QOi~ sectpoundQttQlsO poundsOsggOi
164 87
2468
1000 1000 1000
140810 74698
2119025
39283 39460
840890
Mean number of organismssample 311 6 Standard deviation 101 1
ill b f 2nean nUll er 0 organIsms 2675398 Standard deviation 8682B8
W= 116 SD= 036 SR= 060 J= 039
A-42
STATION 18 Date 29 August 1984 Depth 30 bull Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samples 10
Total Frequency occurrence
Densi ty 2
(nom )
Taxa number (~ ) x S D
Nematoda 150 1000 128790 28905 Turbellaria 7 400 6010 9096 ~nh imni~Qj Oligochaeta ~~i~2Y~k~~1 ini~CIDgii bih2g~Qb~ Yi(~U2 Bivalvi a
B 145
1 1 2
600 1000
100 100 200
6869 124497
859 859
171 7
677 3 84732
271S 2715 3620
~Q[Qi~yli miDllgni bimn2pound~ih~C sp ~QtQehiY imQUia Harpacticoida
7 7
265 1
500 300
1000 100
6010 601 0
227529 859
8145 10747
139462 2715
sect~QtiQDi ~Q~Q~i~ Chironomid larvae
2471 2
1000 200
2121601 171 7
1063112 3620
Mean number of organismssample 3067 Standard deviation 121 9
2Mean number 0 f organIsms m 2633326 standard deviation 1046718
H = 1 09 SD= 034 SR= 1 04 J= 029
A-43
STATION 58 Date 29 August 1984 Depth 55 111
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (noI 2 ) Total occurrence -----------------
Taxa nUllber (X) X SD
Nemertea 4 400 3434 4434 Nuatoda 64 1000 54950 25016 Turbellaria 9 400 7727 11047 ~Hl~b limli~Q19 Oligochaeta
1 37
100 1000
859 31769
2715 19006
i~Qyh il(~~ bHtlQSlheln Yl Bivalvia
4 4
20
200 300 400
3434 3434
17172
8215 6003
26541 ~e(ijY l bQ~dlH sp
26 1
700 100
22324 859
25662 2715
~Q[QQhil iQ sectjgUell HD Heleidae larvae
418 20
1
1000 800 100
358895 17172
859
129443 12799 271 5
Mean number of organismssample 609 Standard deviation 175
nean num b er 0 f organIsms 1 111 2 522887 Standard deviation 150164
H= 176 SD= 051 SR= 1 30 J= 047
A-44
I I
I
I
STATION SS
Date 29 August 1984 Depth 21 1
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (no2) Total occurrence
Taxa nUllber (X) x S D
Nematoda ISO 1000 128790 37969 Turbellaria 1 100 859 271 5 Oligochaeta 48 1000 41213 16088 ~i~g~sect~~l iQ~~mgi bi~QQg~gb~sect ~i~nsect
10 14
600 600
eSB6 12020
9050 14137
Bivalvia 4 200 3434 7240 ~Q[Q~Yl niQaa Ostracoda
15 7
700 SOO
12879 6010
15806 7069
bmQg~~~b~ SPa 14 800 12020 8295 ~g[gaby mgni sect~g~~Qn ~ngnai Chironomid larvae
IB4 25 9
1000 900 700
157982 21465
7727
35563 16810 6335shy
Mean number of organismssample 481 Standard deviation B6
2Mean number 0 f organlsms m 412987 Standard deviation 74131
H= 24S SD= 074 SR= 1 23 J= 068
A-45
STATION 45 Date 14 September 1984 Depth 61 11
Salinity (bottom) 03 ppt Temperature (bottom) IB4 C No of samples 10
---------------------------------~----------------------------------------
Taxa TotalnUlllDer
Frequency occ~~~ence
Density (no 2) -----X-------sect7B
Nematoda 189 1000 162275 85233 t1tQ SPa
Turbellaria 2 2
200 100
171 7 171 7
3620 5430
~~~nIng limoifQl t1QQQDi~ flQriQ Oligochaeta
5 19
142
400 800
1000
4293 1631 3
121921
6071 12442 30504
~QQifYl mDl~D bimoQpoundt1hgr Spa Cumacea
19 184
2
800 1000 200
1631 3 157982
171 7
130B4 69541 3620
~Q[QnniYm ~~lmQDi Harpacticoida
118 1
1000 100
10131 5 B59
43367 2715
sectfQIIQD fOQgO Chironomid larvae
1780 1
1000 100
1528308 859
673586 2715
Mean number of organismssample 2464 Standard deviation 874
M ean num b er f 20 organlsms 2115590 Standard deviation 750305
H= 151 SD= 046 SR= 1 07 J= 041
A-46
STATION 18 Date 14 September 1984 Depth 21 III
Salinity (bottom) 01 ppt Temperature (botto) 182 C No of samples 10
Frequency DenSity (nom 2 ) Total occurrence ---------------- shy
Taxa nUlDber (i) X SD
Nemertea 1 100 859 271 5 Nematoda 186 1000 159700 44925 Turbellaria 16 400 13738 20717 ~~Dth~~ limni~Ql Oligochaeta
13 55
700 900
11162 47223
9096 30085
~Q~ei~Yl nil~Qi~ 17 900 14596 7069 bimDg~lbg[ Spa b 500 5152 6003 ~Q[Q2niY ~lgQi~ Harpacti coi da
562 2
1000 200
482533 171 7
136766 3620
sectpoundQttQ~Q~ ~n~ni 791 1000 679153 324290
Mean number of organismssample 1649 Standard deviation 447
I 211ean nUll ber 0 f organIsms I 1415831 Standard deviation 384136
H= 179 SD= 064 SR= 084 J= 054
A-47
STATION 58 Date 14 September 1984 Depth 58 III
Salinity (bottom) 01 ppt Temperature (bottom) 191 C No of sampl es 10
-------------------------------------------~------------------------------Frequency Density (nom 2 )
Total occurrence Taxa number eX) X SD
Nemertea 1 100 859 2715 Nematoda 55 1000 47223 18658 Turbellaria 10 500 8586 11448
1 100 859 2715 Oligochaeta 41 1000 35203 17850 ~~iQQ~~gll iu1g[m~i ~Q[Q~Yl nilD bimnQ~Y~h[ Spa ~Q[Q~hiYm lmgui sectpoundQilg1D poundU2D Chironomid larvae
4 10
2 277
23 4
100 500 200
1000 700 300
3434 8586 171 7
237832 19748 3434
10861 11448 3620
50561 21051 6003
Mean number of organismssample 428 Standard deviation 51
M b f 2ean num er 0 organIsms III 367481 Standard deviation 43743
H= 179 SD= 055 SR= 114 J= 052
A-48
I I
STATION SS Date 14 September 1984 Depth 21 II
Salinity (bottom) 01 ppt Temperature (bottom) 190 C No of samples 10
--------------------------------------------------------------------~-----
Frequency Density (no1I2) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 102 1000 87577 39200 Oligochaeta 34 700 29192 31142 ~iQ2Y~y1 int(mgi~ bithQgl~en~ Yi(gDsect ~Q(~i~Y m~DilgDsecti~ bimDQamp~1h(sect sp ~2(QQhiY slmQD 2poundQiiQlsD ~sD~g~nsecti Chironomid larvae
36 18 16 17
100 16
3
1000 600 800 700
1000 800 300
30910 15455 13738 14596 85860 13738 2576
157BO 20953 10078 14621 32126 10861 4147
Mean number of organismssample 342 Standard deviation 97
2Mean nUllber 0 f organlsms m 293641 Standard deviation 83617
H= 262 SD= 079 SR= 095 J= 083
A-49
Appendix B--Sediment particle size and organic content of the Cathlamet Bay
benthic invertebrate sites 13 March through 14 September
1984
iii
1
Station 18a 48 54 57
Survey 1 1 1 1
Month March March March March
Day 13 13 13 13
Particle size (mm) Phib Percent by weight
gt 40 -2 000 000 000
20- 40 -1 000 000 000
10- 20 0 000 009 000
05- 10 1 018 1079 032
025- 050 2 545 7583 2468
0125- 025 3 8731 1225 6783
00625-0125 4 491 037 657
lt0625 (5-12) 216 067 060
Organic Content 160 116 128
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
b Phi= -log2(sediment particle diameter in mm)
B-1
Station 18a 48 54 57
Survey 2 2 2 2
Month April April April April
Day 5 5 5 5
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 003 093 000
05shy 10 1 005 31 75 023
025shy 050 2 087 5904 2368
0125- 025 3 6316 750 7155
00625-0125 4 3056 026 427
lt0625 (5-12) 533 052 028
Organic Content 081 077 065
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-2
Station 45 55 58
Survey 3 3 3 3
Month April April April April
Day 18 18 18 18
Particle size (mm)
gt 40
Phi
-2
Percent by weight
000 000 000
20shy 40 -1 000 000 000
10shy 20 0 005 009 004
05shy 10 1 010 027 013
025shy 050 2 015 095 225
0125- 025 3 097 536 6111
00625-0125 4 453 2821 2205
lt0625 (5-12) 9420 6511 1442
Organic Content 31 42 14
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-3
Station 18a 45 55 58
Survey 4 4 4 4
Month May May May May
Day 4 4 4 4
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 021
05shy 10 1 000 065 063
025shy 050 2 012 370 230
0125- 025 3 091 4099 4696
00625-0125 4 322 3650 3052
lt0625 (5-12) 9575 1810 1939
Organic Content 330 180 160
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-4
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
5
May
17
000
000
005
016
217
5862
2729
1170
100
45 55 58
5 5 5
May May May
17 17 17
Percent by weight
000 000
000 000
005 008
113 031
325 274
1903 5613
2784 2401
4870 1672
240 110
000
000
000
010
020
079
397
9494
390
B-5
Station 18al 45 55 58
Survey 6 6 6 6
Month June June June June
Day 6 6 6 6
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 020
05shy 10 1 005 051 027
025shy 050 2 005 301 1 79
0125- 025 3 074 3189 5404
00625-0125 4 599 4118 2885
lt0625 (5-12) 9317 2332 1485
Organic Content 340 240 150
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-6
Station
Survey
Month
Day
Particle size Cmm) Phi
gt 40 -2
20shy 40 -1
10shy 20 a
05shy 10 1
025shy 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
7
June
18
000
000
005
029
138
3917
4143
1768
180
45
7
June
18
55 58
7 7
June June
18 18
Percent by weight
000
000
000
010
020
080
427
9464
310
000 000
000 000
000 007
011 022
057 190
957 5286
3023 2642
5957 1853
1 70 110
B-7
Station 18al 45 55 58
Survey 8 8 8 8
Month July July July July
Day 2 2 2 2
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 006 002 006
05shy 10 1 006 0l3 023
025shy 050 2 017 088 171
0125- 025 3 074 2712 5365
00625-0125 4 552 3892 3081
lt0625 (5-12) 9345 3294 l354
Organic Content 410 210 160
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-8
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
9
July
17
000
000
003
013
130
4294
4434
1127
130
45
9
July
17
Percent
000
000
000
006
012
051
046
9885
290
55
9
July
17
by weight
000
000
019
048
091
628
3616
5597
030
58
9
July
17
000
000
004
022
158
5017
3148
1650
140
B-9
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18al
10
August
1
45
10
August
1
55
10
August
1
58
10
August
1
Percent by weight
000 000
000 004
001 004
009 018
018 088
098 306
049 2510
9824 7070
000
005
045
763
3604
4495
932
156
100 190 060
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-10
Station 18 45 55 58
Survey 11 11 11 11
Month August August August August
Day 17 17 17 17
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000 000
20- 40 -1 005 000 000 000
10- 20 0 021 003 000 210
05- 10 1 064 009 000 159
025- 050 2 226 027 045 2656
0125- 025 3 3259 131 712 3719
00625-0125 4 4327 195 1737 1159
lt0625 (5-12) 2098 9635 7506 2097
Organic Content 210 300 160 100
Ii I
B-11
Station
Survey
Month
Day
Particle size (mm) Phi
gt40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
12
August
29
000
000
012
046
186
3465
4498
17 93
241
45
12
August
29
55 58
12 12
August August
29 29
Percent by weight
000
000
002
009
026
118
189
9656
540
000 000
000 000
003 011
011 028
055 1013
859 5033
1596 1827
7476 2089
1 70 120
B-12
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
_-------------------- shy
B-13
STATION 58 Date 17 May 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) 123 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nemertea 2 100 171 7 5430 Nematoda 75 1000 64395 34404 ~~2Qih~a limQi~Q 2 200 171 7 3620 Oligochaeta 60 1000 51516 33376 ~~igQY~~~12 iQ~[~~gi 2 200 171 7 3620 bitQQ9~Bh~sect Yr~Qsect 3 200 2576 579~
gQ[Qi~Yl ID2Dil~nsectisect Ostracoda
6 6
500 400
5152 5152
6003 8295
binQ~~nr[ sp gg[QQOYm mQQsect sect~QttQn 5n2Q~nsectia Chironomid larvae
2 34
1 1
200 1000
100 100
171 7 29192
859 859
3620 12927 271 5 2715
Mean number of organismssample 194 Standard deviation
2Mean nurn ber 0 f organIsms fA 166568 Standard deviation 56259
H= 225 SD= 072 SR= 1 45 J= 063
A-16
66
STATION 55 Date 17 May 1984 Depth 24 II
Salinity (bottom) 00 ppt Telllperature (bottom) 126 C No of samples 10
Total Frequency occurrence
Taxa nUllber (X) X SD --------------------------------------------------------------~-----------
Nematollorpha 2 200 171 7 3620 Nematoda 63 1000 54092 35297 Oligochaeta 94 1000 80708 44004 ~~iQQY~k~~l iQt~(m~Qi bitnQg~Qh~~ Yi[~Q gQ[QipoundY~ mni~Q~i Ostracoda
10 9 4 2
600 800 300 100
8586 7727 3434 171 7
9050 4874 6003 5430
bimnQ~~ln~[e sp ~Q(QQbiYm mQD ~Q[QQbiYm 2inipoundQ[n~ Chironomid larvae
6 142
3 1
600 1000 200 100
5152 121921
2576 859
4434 50682 5795 2715
Mean number of organismssample 336 Standard deviation 62
2Mean num ber 0 f organisms m 288490 Standard deviation 53421
H= 214 SD= 071 SR= 119 J= 062
A-17
STATION 45 Date 1 June 1984 Depth 61 m Salinity (bottom) 01 ppt Temperature (bottom) 139 C No of samples 10
Total Frequency occurrence
Density (no2)
Taxa nUllber (1) X SD
Nematoda 174 900 149396 132347 Turbellaria 5 200 4293 10898 ~~~QiQ~sect tmQtpoundQ~ ~QQsectQ flQi~sect Oligochaeta ~~iQQysecttygl~ iQl~rm~~i2 ~Q[Qi~~l~ ~~DilgDsectisect Ostracoda
5 20
190 103
12 5
400 900
1000 900
60 (I 400
4293 17172
163134 88436 10303 4293
6071 8095
92563 51524 11304 6071
bimnQpoundytng[ sp ~gQmYsectisect IDg[pound~Qisect ~Q[QQhi~m sectlmQDisect sectpoundQtiQlsectQ pound~Qgsectisect ChironQmid larvae
33 1
10 375
2
900 100 700
1000 200
28334 859
8586 321975
171 7
17196 2715 7010
179201 3620
Mean number of organismssample 935 Standard deviation 254
nurn b 0 f 2lean er organlsms m 802791 Standard deviation 218423
H= 239 SD= 075 SR= 1 22 J= 065
A-18
STATION 18 Date 1 June 1984 Depth 30 AI
Salinity (bottom) 00 ppt Temperature (bottom) 134 C No of samples 11
Frequency Density (no 1m2)
Taxa Total number
occurrence (X)
---------------- shyX SD
Turbellaria 14 636 10928 1157 7 ~~~Qltlg~ ilipoundQ~ Oligochaeta
10 178
727 1000
7805 138937
601 6 67913
~~iQQy~tY~l~ ill~[m~Qi~ 122 636 95227 93619 ~Q[Qipound~ l~i~lsectisect Ostracoda
7 1
455 9 1
5464 78 1
6946 2589
billQylhg[ Spa 16 818 12489 10420 GQ[QQQil HQi~ 139 1000 108496 70934 gQ[Qebi secteiifQ[~ sectQiiQi2 ~Q~sectisect Diptera pupae
1 2 1
9 1 182
11 1
781 1561 781
2589 3473 2589
Chironomid larvae 2 182 1561 3473
Mean number of organismssample 714 Standard deviation 284
nean num b er 0 f organlsms m 2 612728 Standard deviation 244249
H= 232 SD= 075 SR= 1 25 J= 063
A-19
STATION 58 Date 1 June 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 138 C No of samples 10
Frequency Density (noI 2 ) Total occurrence
Taxa number (X) X SD
Nematoda 173 1000 148538 47383 Turbellaria 3 300 2576 4147 Oligochaeta 53 1000 45506 32139 ~giQgY2k~g~ ini~[m~Qi~ bQg91YehY2 Yi[~nsect ~Qr~i~Yl m~nl~n~i
26 1
10
600 100 500
22324 859
8586
3391 2 2715
13424 bimnQpound~Q~[ sp ~Q9~m[Y poundgnitYpoundQlysect ~QtQehiYm ~lQni
4 1
46
200 100
1000
3434 859
39496
8295 2715
22243 Chironomid larvae 1 100 859 271 5
Mean number of organismssample 318 standard deviation 103
M b f I 2ean num er 0 organlsms III 273035 Standard deviation 88842
H = 1 99 SD= 065 SR= 1 08 J= 060
A-20
STATION 55 Date 1 June 1984 Depth 27 m Salinity (bottom) 00 ppt Temp era t u r e (b 0 t tom) 140 C No of samples 10
Frequency Density (nom 2 ) Total occurrence
Taxa nueber (X) X SD
Nematoda 157 1000 134800 69524 Turbellaria 9 400 7727 13696 tlHl~lk ~2~~iQH 1 100 859 2715 Oligochaeta 49 1000 42071 32745 ~~iQQysect~gl~ S[l9sect bHbQghQb~~ Yirl~
10 1
400 100
8586 859
12799 2715
tQ[Qpoundls l2lilUsect bilQHSbg[ sp ~QrQQbil nllQisectHarpacticoida
4 7
134 1
400 500
1000 100
3434 6010
115052 859
4434 7069
44742 271 5
sectpoundQUQlls poundsQgn~sect Chironomid larvae
1 1
100 100
859 859
271 5 2715
Hydracarina 1 100 859 2715
Hean number of organismssample 376 Standard deviation 132
M b f 2ean num er 0 organIsms m 322834 Standard deviation 113127
H= 202 SD= 068 SR= 1 40 J= 055
A-21
STATION 45 Date 18 June 1984 Depth 67 m Salinity (bottom) 01 ppt Temperature (bottom) 149 C No of samples 10
Frequency Density (nom2)
Taxa Total nUllber
occurrence ex) i SD
Nematoda 109 1000 93587 3891 7 Turbell ari a 3 200 2576 5795 ~g~tbg limoipoundQl Q~Qni2 fQ(i~2 Oligochaeta ~gigQ~~Y inl[ggi ~Q[QiSY2 moilo Ostracoda
3 2
194 44
7 3
200 200
1000 1000 200 200
2576 171 7
16656B 37778 6010 2576
5795 3620
118364 36020 12831 5795
bimoQampl~n~[2 sp ~Q[QQbiYm lmgoi Harpacticoida sectpoundQQ1202 pound2022Osect Chironomid larvae
68 1 1
113 2
900 100 100
1000 200
58385 859 859
97022 171 7
97627 2715 2715
73976 3620
Mean number of organismssa_pie 550 Standard deviation 371
Mean nUll ber 0 f organIsms 2II 472230 Standard deviation 318519
H= 242 SD= 077 SR= 1 32 Ja 065
A-22
STATION 18 Date 18 June 1984 Depth 34 m Salinity (bottom) 00 ppt Temperature (bottom) 155 C No of samples 10
Frequency Density (nom 2) Total occurrence ----------------shy
Taxa nUlber (Z) X SD
Neutoda 291 1000 249853 138826 Turbellaria 1 100 859 2715 ~~n~~nki~ sectQ~~iQ~2 ~g~ntbg2 limni~Q9 Oligochaeta
1 3
123
100 300
1000
859 2576
105608
271 5 4147
48240 ~~igQY~~~~9 int~(mgii ~Q[~i~~~ mini~ni bimnQ~ylbg(~ Spa
67 6 5
1000 500 400
57526 5152 4293
40485 6003 6071
~Q(QebiYm ~imQnisect Harpacticoida
80 2
1000 200
68688 171 7
41276 3620
sect~QttQini ~2nig~n~i Chironomid larvae
2 4
200 300
171 7 3434
3620 6003
Mean number of organismssample 585 Standard deviation 194
I 2Mean urn b er 0 f organIsms m 502281 Standard deviation 166943
H= 203 SD= 068 SR= 1 20 J= 057
A-23
STATI ON 58 Date 18 June 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (noI 2) Total occurrence
TaKa number (X) X SD
Nellertea 2 100 1717 5430 Nematoda 160 1000 137376 6361 1 Turbellaria 4 400 3434 4434 Oligochaeta 36 1000 3091 0 14705 ~iQQYik~ Q1rQ 4 300 3434 6003 bitnQgl~ebysect YrDsect ~Q[QiY~ ~~nni biQQpoundY1h[ sp ~Q[Qeng ~ilQD Chironomid larvae
3 1 3
61 1
300 100 300
1000 100
2576 859
2576 52375
859
4147 2715 4147
1428 1 2715
Chironollid pupae 1 100 859 271 5
Mean number of organismssample 276 standard deviation 72
nean nurn b er 0 f organIsms I 2 236974 Standard deviation 61410
H = 1 78 SD= 060 SR= 1 23 J= 051
A-24
STATION 55 Date 18 June 1984 Depth 18 m Salinity (bottom)1 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (no 1m2) occurrence
Taxa (X) X SD
Nematoda 160 1000 137376 43967 Turbellaria 1 100 859 271 5 Oligochaeta 61 1000 52375 31985 ~~iQQY~kY~~ int~[mQi~ ~Q[Qipound~l~ m~nini~ biIDnQ~Ylb[s sp
3 3 3
300 300 300
2576 2576 2576
4147 4147 4147
~Q[Q~bi~ ~slIDQni~ Chironomid larvae
85 6
1000 600
72981 5152
34165 4434
Mean number of organismssample 322 Standard deviation 75
2Mean number 0 f organIsms m 276469 Standard deviation 64099
H= 178 5D= 065 SR= 0B4 J= 059
A-25
Frequency Density (no2) occurrence -----------------
Taxa (7) X SD
Nematoda 104 1000 89294 47409 Turbell ar i a 1 100 859 2715 ~~~nQ~sect imni~Q~ tjQQsectQlis flQig~ Oligochaeta
2 1
297
100 100
1000
171 7 859
255004
5430 271 5
146273 ~~i~QYsect~Y~lls ilr2is gQrQi~y~ IDDilDia
24 4
600 300
20606 3434
27212 6003
Ostracoda 2 200 171 7 3620 biDQSy~b~C~ sp M~QYsectisect m~r~~Qi ~QrQeniy QD Harpacticoida
157 1 1 1
900 100 100 100
134800 859 859 859
73197 2715 2715 2715
sectpoundQttQDs SsDQD 113 900 97022 61656
STATION 45 Date 2 July 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) No of samples 10
172 C
Mean number of organismssample 708 Standard deviation 339
M ean num b er f 20 organisms 607889 Standard deviation 290B22
H= 216 SD= 073 SR= 1 27 J= 058
1-26
STATION 18 Date 2 July 1984 Depth 24 WI
Sal inity (bottom) 00 ppt Temperature (bottom) 172 C No of samples 10
--------------------------------~-----------------------------------------Frequency Density (nom2)
Total occurrence Taxa number (7) X SD
Nematoda 202 1000 173437 113532 ~~~nih~sect mnpoundQ~ Oligochleta
4 102
400 1000
3434 87577
4434 54873
~~igQYsect~Y~12 inl~rmgi2 ~Q[~poundYl~ m~ni~nsectisect bimnQpoundylh~[~ Spa
115 4
15
900 300 900
98739 3434
12879
100720 6003 9274
~Q[QQniY~ sect~QDi~ 55 900 47223 40525 Harpacticoida 1 100 859 2715 sectpoundQiiQlD SDg~DEisect Chironomid larvae
2 6
200 400
1717 5152
3620 7240
Hymenoptera 1 100 859 2715 Hydracarina 1 100 859 2715
Mean number of organismssample 508 Standard deviation 253
2Mean num ber 0 f organIsms m 436169 Standard deviation 217580
H= 225 SD= 074 SR= 1 22 J= 063
A-27
STATION 58 Date 2 July 1984 Depth 58 1
Salinity (bottom) 00 ppt Temperature (bottom) IBO C No of samples 10
Frequency Density (no2) Total occurrence
Taxa number ltX) i SD
Nematoda 151 1000 129649 42729 Turbellaria 1 100 859 2715 01 i gochaeta 41 1000 35203 22698 ~~i~e~~~ int~~m~~ 3 200 2576 5795 btbQglYRhY~ Yir~n~ ~e~~ampy mni~niii bimQeamp~tb~ sp ~e~eQhiY ~mQni Chironomid larvae
1 4 2
68 1
100 300 200
1000 100
859 3434 171 7
58385 859
271 5 6003 3620
1557 1 2715
Mean number of organisassample 272 Standard deviation
I 2Mean num ber 0 f organIsms I 233539 Standard deviation 62546
H = 1 69 SD= 061 SR= 099 J= 053
A-28
73
STATION 55 Date 2 July 1984 Depth 15 III
Salinity (bottom) 00 ppt Temperature (bottom) 182 C No of samples 10
Frequency Density (nom2) occurrence
Taxa (X) X SD
Nematoda 184 1()00 157982 5264B Turbellaria 1 100 859 271 5 Oligochaeta ~~iQQ~sect~Y~ll~ n~[~~Qi~ bitnggYQDYsect Yi[~nsect ~QrQipoundM2 m2ni~nsectisect bimnQpoundYn~[2 sp ~QrQQhiM Qni Harpacticoida
91 2 1 B 2
96 2
1000 200 100 500 200
1000 200
78133 171 7 859
6869 171 7
82426 1111
26058 3620 271 5 1890 3620shy
25980 3620
ChirDnomid larvae 5 400 4293 6071 Chironolllid pupae 1 100 859 2715
Mean number of organismssample 393 Standard deviation 53
2t1ean nUllber Df organlsms III 337430 Standard deviatiDn 45080
H= 187 SD= 067 SR= 116 J= 054
A-29
STATION 45 Date 17 Jul y 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (X) X SD
Nematoda 215 1000 184599 45837 ~~n~b~~ imDipoundQ Qe~Qni fllHi2
3 1
300 100
2576 859
4147 2715
Oligochaeta 305 1000 261873 147955 ~~iQQY~k~ in~rm~2i ~Qr~ipoundYl IDniln~i~ Ostracoda
17 1 2
500 100 200
14590 859
171 7
22554 2715 3620
bmnQpound~ihr sp ~QCQQhiY ~lQD~
176 1
1000 100
151114 859
57125 2715
Harpacticoida 4 300 3434 6003 sectQ~~Qn poundnQnai~ Chironomid larvae
91 5
1000 400
78133 4293
61310 6071
Mean number of organismssample 821 Standard deviation 275
M b f 2ean num er 0 organlsms m 70491 1 Standard deviation 236369
H= 215 SD= 073 SR= 114 J= 060
A-30
STATION 18 Date 17 Jul y 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom 203 C No of samples 10
Frequency Density (001 2 Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 339 1000 291065 119140 Turbellaria 3 200 2576 5795 ~~2~b~~ limnipoundQ12Oligochaeta
4 18S
300 1000
3434 161417
6003 89393
~~iQQy~~~ls in~(ID~Qi bim~Qampy~bg(2 Spa
34 16
800 700
29192 1373B
22967 15252
~g(gebi~m ~21mQni2 Harpacticoida
52 3
1000 200
44647 2576
25212 5795
2ampQ11Q1202 ampS02Qg~2i2 Chironomid larvae
18 10
700 700
15455 8586
13904 701 0
Mean number of organi$mssample 667 Standard deviation IBB
H ean nurn b er 1 20 f organIsms m 572686 Standard deviation 161750
H = 1 99 SD= 065 SR= 090 J= 060
A-31
STATION 58 Date 17 July 1984 Depth 55 AI
Salinity (bottom) 00 ppt Temperature (bottom) 197 C No of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nellatoda 173 1000 14853B 66390 Turbellaria 1 100 859 271 5 ~~~n~hu ini~QA Oligochaeta
1 46
100 1000
859 39496
2715 26293
~gipoundQy~~ygl2 in~rJg~i~ b1nQglYRnY~ Yi( Bivalvia
6 2 1
400 200 100
5152 1717 859
8295 3620 271 5
ei~ IDnH~n~i~ 2 200 171 7 3620 Ostracoda 1 100 959 271 5 biIDQHlh~( Spa ~Q(QRbim ~21Qnisect Diptera pupae
1 94
1
100 1000 100
859 80708
859
2715 35332 2715
Heleidae 1arvae 5 500 4293 4525 Chironomid larvae 1 100 859 2715
Mean number of organismssample 335 Standard deviatiDn 113
Mean number of organismsRI2 287631 Standard deviation 97413
H= 1 86 SO= 064 SR= 155 J= 049
A-32
STATION 55 Date 17 July 1984 Depth 18 m Sali nity (bottom) 00 ppt TeAlperature (bottom) 199 C No of samples 10
Frequency Density (nom2 ) occurrence
Taxa (X) x S D
Nematoda 61 1000 52375 33972 Turbellaria 1 100 859 2715 Oligochaeta 24 900 20606 11590 ~~i2QY~k~~1 iOi[2 bimDQ~xlb~r sp ~Q[QQhi~ sectgni~ Chironomid larvae
3 1
38 3
200 100
1000 300
2576 859
32627 2576
5795 2715
19326 4147
Mean number of organismssample 131 standard deviation 54
M b f 2ean num er 0 organIsms 112477 Standard deviation 46757
H= 184 SD= 066 SR= 085 J= 065
bull
A-33
STATION 45 Date 1 August 1984 Depth 58 m Sal i nity (bottoll) 03 ppt Temperature (bottom) 203 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa nUllber (X) X SD
Nematoda 145 1000 124417 52344 Turbellaria 1 100 859 2715 Mmth~sect iHpoundQ~ Q~~Qi ilQ[i9Oligochaeta
5 3
196
500 300
1000
4293 2576
168286
4525 4147
91064 ~igQYsect~~li int9i Ostracoda
2 3
100 300
171 7 2576
5430 4147
bimnQpoundtl sp ~Q[Q2hiY sectlQni~
240 6
1000 600
206064 5152
73526 4434
sectpoundQtQl poundngnai~Helei dae larvae
1862 1
1000 100
1598713 859
966134 271 ~
Mean number of organismssample 2464 Standard deviation 1156
211 ean num ber 0 f organIsms II 2115590 Standard deviation 992518
H= 124 SD= 041 SR= 089 J= 036
A-34
STATION 1S Date 1 August 1984 Depth 24 II
Salinity (bottom) 00 ppt Temperature (bottom) 198 C No of samp I es 10
Frequency Density (nom2) occurrence ---------------- shy
Taxa (X) X S D
Nuertea 1 100 859 2715 Nellatolllorpha 1 100 859 2715 Nematoda 248 1000 212933 108288 Turbellaria 4 400 3434 4434 ~untb~la Hli~g Oligochaeta
4 206
400 1000
3434 176872
4434 75309
~~igQYli~dli i[t~(gi~ ~QtQpound l binQ~ybt2 sp ~2l~bi Q[i ~2tlgtQ(ila tirisect sectpoundQtel poundl9lla Chironomid larvae
10 1
20 205
1 574
9
500 100 800
1000 100
1000 400
8586 859
17172 176013
859 492836
7727
10709 271 5
14021 48104
271 5 150531
13696
Mean number of organismssample 1284 Standard deviation 290
M b f I 2ean nurn er 0 organIsms III 1102442 Standard deviation 2488B5
H= 211 SD= 071 SR= 1 16 J= 057
A-35
STATION 58 Date 1 August 1984 Depth 55 m Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samp 1es 10
Frequency Densi ty _ ltnom2 ) Total occurrence
Taxa number (7) X SD
Nemertea 1 100 859 2715 Nematoda 22 900 18889 15036 Turbellaria 1 100 859 2715 Oligochaeta 19 700 16313 17385 biiQQgl~QhY~ YiCg~~ 2 200 171 7 3620 ~Q[~i~~l~ m2nil~n2i2 ~Q[QehiYm ~lmQni2
4 164
300 1000
3434 140810
6003 103048
Heleidae larvae 8 500 6869 8868
Mean number of organismssample 221 Standard deviation 111
I 2Mean num ber 0 f organIsms m 189751 Standard deviation 95391
H = L 37 SD= 043 SR= 090 J= 046
A-36
STATION 55 Date 1 August 1984 Depth 15 m Salinity (bottoll) 01 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (i ) X SD
Nemertea 1 100 859 2715 Neutoda 122 1000 104749 7394B Turbellaria 4 300 3434 6003 ~~~~~nt~ secte~poundQa~ Oligochaeta
1 118
100 1000
859 101315
2715 61223
~giQgY~k~~l iot~[m~Qi btbQg~2b~ Y[O ~grQipound~ ~nl~ni b~ngpound~tb~[ Spa
3 1 5 1
200 100 500 100
2576 859
4293 859
5795 2715 4525 2715
~Q[QebiYm ~mQoi sect~QttQ~ ~OQOi Heleidae larvae
42 2 2
800 200 100
36061 171 7 171 7
21341 3620 5430
Chironomid larvae 4 400 3434 4434
Mean number of organismssapIe 306 Standard deviation 169
M b f I 2ean nurn er 0 organIsms m 262732 Standard deviation 145101
H = 198 SD= 067 SR= 1 45 J= 054
A-37
~-- --------------~~-------------
STATION 45 Date 17 August 1984 Depth 61 1
Salinity (bottom) 10 ppt Temperature (bottom) 210 C No of samp 1es 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nematoda 240 1000 206064 130213 ~~h~sect limQ tjQ~~Hi~ fQ[i~~ Oligochaeta
31 2
245
400 100
1000
26617 1717
210357
75228 5430
121374 babgglYQbl~ Yi[~sect 1 100 859 2715 Ostracoda 1 100 859 271 5 biQ~xtb~[ Spa ~~Q~~isect ~[pound~Qisect ~Qgebi HQOi
333 2
143
1000 200
1000
28591 4 171 7
1227BO
106553 3620
106860 sectpoundQUg~ poundg~nsectisect 1738 1000 1492247 68441 7
Mean number of organismssample 2736 Standard deviation 944
M b f I 2ean num er 0 organlslls m 2349130 Standard deviation 810600
H= 172 SD= 056 SR= 079 J= 052
A-38
STATION 18 Date 17 August 1984 Depth 27 III
Sal i ni ty (botto) 01 ppt Temperature (bottom) 214 C No of samples 10
Frequency Density (nom 2 ) occurrence
Taxa (X) X SD
Nematoda 186 1000 159700 62468 ~tgt SPa 2 100 171 7 5430 Turbellaria 8 400 6869 8868 ~~ntbg2 imnipoundQ 12 700 10303 11304 Oligochaeta 283 1000 242984 90509 ~~iQQY~~Y~lls inlgtmggisBivalvia
4 1
400 100
3434 859
4434 271 5
~Qt~i~Y nilnsectisectbimnQpoundttbg[s SPa ~QtQQbi~ islmQDi2
1 17
286
100 900
1000
859 14596
245560
271 5 10747 83461
sectpoundetteln poundDsggnsectisect Chironomid larvae
526 4
1000 3Q0
451624 3434
179610 6003
Mean number of organismssapIe 1330 Standard deviation 162
Mean nurn ber I 20 f organIsms m 1141938 Standard deviation 139389
H= 214 SD= 073 SR= 1 06 J= 060
A-39
STATION 58 Date 17 August 1984 Depth 55 II
Salinity (bottom) 01 ppt Temperature (bottom) 220 C ND of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (7) x S D
Nematoda 68 1000 58385 27689 Turbellar i a 4 200 3434 8295 Oligochaeta 19 800 16313 13084 ~~i~Q~k~~l~ in~~[m~i bitUQ9Y2bYa Yi[~na Bivalvia
3 3 4
300 300 300
2576 2576 3434
4147 4147 6003
gQ[QipoundYl~ mnilDa 1 100 859 2715 binQpoundY~[ sp gQ[Q2UY a~mgnia sect~Qtgl~n ~n~~ni
2 338
6
100 1000 400
171 7 290207
5152
5430 56636 7240
Mean number of organismssample 448 Standard deviation 72
W b f 2lean num er 0 organlsms II 384653 Standard deviation 61988
H = 1 27 SD= 041 SR= 1 02 J= 038
A-40
STATION 55 Date 17 August 1984 Depth 18 m Salinity (bottom) 00 ppt Temperature (bottol) 223 C No of samples 10
Frequency Density (nom 2 ) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 291 1000 249853 118104 Turbellaria 1 100 859 2715 M~ntb~ mni~Q Oligochaeta
1 47
100 1000
859 40354
2715 28347
~~iQQ~sectkY~ll int~[m~gi bitbQQ1YSDY Yi(gn Bivalvia
25 12
6
900 500 400
21465 10303 5152
1231 0 18459 7240
~Q~2ipoundY mnil~ni Ostracoda
11 8
400 600
9445 6869
12442 6773
bmnQpoundYb~r~ SPa 52 1000 44647 19746 ~QrQsbY lmgnisectsQiielo snQ~ni~ Chironomid larvae
43 5
15
1000 400 BOO
36920 4293
12879
21436 6071 8344
Mean number of organismssample 517 Standard deviation 174
M b f I 2ean num er 0 organlsms m 443896 Standard deviation 149431
W = 228 SD= 065 SR= 1 33 J= 062
A-41
STATION 45 Date 29 August 1984 Depth 55 III
Salinity (bottom) 07 ppt Temperature (bottom) 199 C No of samples 10
Frequency Density (noI 2) Total occurrence
Taxa number (X) X SD
Nematoda 192 1000 164851 98380 ~sntbsect limnipoundQlDligochaeta
2 198
200 1000
171 7 170003
3620 67339
~Q[eipoundYls msniln~isect Ostracoda
1 4
100 400
859 3434
2715 4434
bimnQpoundytb[s Spa gQ[Qeniy sect21QOi~ sectpoundQttQlsO poundsOsggOi
164 87
2468
1000 1000 1000
140810 74698
2119025
39283 39460
840890
Mean number of organismssample 311 6 Standard deviation 101 1
ill b f 2nean nUll er 0 organIsms 2675398 Standard deviation 8682B8
W= 116 SD= 036 SR= 060 J= 039
A-42
STATION 18 Date 29 August 1984 Depth 30 bull Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samples 10
Total Frequency occurrence
Densi ty 2
(nom )
Taxa number (~ ) x S D
Nematoda 150 1000 128790 28905 Turbellaria 7 400 6010 9096 ~nh imni~Qj Oligochaeta ~~i~2Y~k~~1 ini~CIDgii bih2g~Qb~ Yi(~U2 Bivalvi a
B 145
1 1 2
600 1000
100 100 200
6869 124497
859 859
171 7
677 3 84732
271S 2715 3620
~Q[Qi~yli miDllgni bimn2pound~ih~C sp ~QtQehiY imQUia Harpacticoida
7 7
265 1
500 300
1000 100
6010 601 0
227529 859
8145 10747
139462 2715
sect~QtiQDi ~Q~Q~i~ Chironomid larvae
2471 2
1000 200
2121601 171 7
1063112 3620
Mean number of organismssample 3067 Standard deviation 121 9
2Mean number 0 f organIsms m 2633326 standard deviation 1046718
H = 1 09 SD= 034 SR= 1 04 J= 029
A-43
STATION 58 Date 29 August 1984 Depth 55 111
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (noI 2 ) Total occurrence -----------------
Taxa nUllber (X) X SD
Nemertea 4 400 3434 4434 Nuatoda 64 1000 54950 25016 Turbellaria 9 400 7727 11047 ~Hl~b limli~Q19 Oligochaeta
1 37
100 1000
859 31769
2715 19006
i~Qyh il(~~ bHtlQSlheln Yl Bivalvia
4 4
20
200 300 400
3434 3434
17172
8215 6003
26541 ~e(ijY l bQ~dlH sp
26 1
700 100
22324 859
25662 2715
~Q[QQhil iQ sectjgUell HD Heleidae larvae
418 20
1
1000 800 100
358895 17172
859
129443 12799 271 5
Mean number of organismssample 609 Standard deviation 175
nean num b er 0 f organIsms 1 111 2 522887 Standard deviation 150164
H= 176 SD= 051 SR= 1 30 J= 047
A-44
I I
I
I
STATION SS
Date 29 August 1984 Depth 21 1
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (no2) Total occurrence
Taxa nUllber (X) x S D
Nematoda ISO 1000 128790 37969 Turbellaria 1 100 859 271 5 Oligochaeta 48 1000 41213 16088 ~i~g~sect~~l iQ~~mgi bi~QQg~gb~sect ~i~nsect
10 14
600 600
eSB6 12020
9050 14137
Bivalvia 4 200 3434 7240 ~Q[Q~Yl niQaa Ostracoda
15 7
700 SOO
12879 6010
15806 7069
bmQg~~~b~ SPa 14 800 12020 8295 ~g[gaby mgni sect~g~~Qn ~ngnai Chironomid larvae
IB4 25 9
1000 900 700
157982 21465
7727
35563 16810 6335shy
Mean number of organismssample 481 Standard deviation B6
2Mean number 0 f organlsms m 412987 Standard deviation 74131
H= 24S SD= 074 SR= 1 23 J= 068
A-45
STATION 45 Date 14 September 1984 Depth 61 11
Salinity (bottom) 03 ppt Temperature (bottom) IB4 C No of samples 10
---------------------------------~----------------------------------------
Taxa TotalnUlllDer
Frequency occ~~~ence
Density (no 2) -----X-------sect7B
Nematoda 189 1000 162275 85233 t1tQ SPa
Turbellaria 2 2
200 100
171 7 171 7
3620 5430
~~~nIng limoifQl t1QQQDi~ flQriQ Oligochaeta
5 19
142
400 800
1000
4293 1631 3
121921
6071 12442 30504
~QQifYl mDl~D bimoQpoundt1hgr Spa Cumacea
19 184
2
800 1000 200
1631 3 157982
171 7
130B4 69541 3620
~Q[QnniYm ~~lmQDi Harpacticoida
118 1
1000 100
10131 5 B59
43367 2715
sectfQIIQD fOQgO Chironomid larvae
1780 1
1000 100
1528308 859
673586 2715
Mean number of organismssample 2464 Standard deviation 874
M ean num b er f 20 organlsms 2115590 Standard deviation 750305
H= 151 SD= 046 SR= 1 07 J= 041
A-46
STATION 18 Date 14 September 1984 Depth 21 III
Salinity (bottom) 01 ppt Temperature (botto) 182 C No of samples 10
Frequency DenSity (nom 2 ) Total occurrence ---------------- shy
Taxa nUlDber (i) X SD
Nemertea 1 100 859 271 5 Nematoda 186 1000 159700 44925 Turbellaria 16 400 13738 20717 ~~Dth~~ limni~Ql Oligochaeta
13 55
700 900
11162 47223
9096 30085
~Q~ei~Yl nil~Qi~ 17 900 14596 7069 bimDg~lbg[ Spa b 500 5152 6003 ~Q[Q2niY ~lgQi~ Harpacti coi da
562 2
1000 200
482533 171 7
136766 3620
sectpoundQttQ~Q~ ~n~ni 791 1000 679153 324290
Mean number of organismssample 1649 Standard deviation 447
I 211ean nUll ber 0 f organIsms I 1415831 Standard deviation 384136
H= 179 SD= 064 SR= 084 J= 054
A-47
STATION 58 Date 14 September 1984 Depth 58 III
Salinity (bottom) 01 ppt Temperature (bottom) 191 C No of sampl es 10
-------------------------------------------~------------------------------Frequency Density (nom 2 )
Total occurrence Taxa number eX) X SD
Nemertea 1 100 859 2715 Nematoda 55 1000 47223 18658 Turbellaria 10 500 8586 11448
1 100 859 2715 Oligochaeta 41 1000 35203 17850 ~~iQQ~~gll iu1g[m~i ~Q[Q~Yl nilD bimnQ~Y~h[ Spa ~Q[Q~hiYm lmgui sectpoundQilg1D poundU2D Chironomid larvae
4 10
2 277
23 4
100 500 200
1000 700 300
3434 8586 171 7
237832 19748 3434
10861 11448 3620
50561 21051 6003
Mean number of organismssample 428 Standard deviation 51
M b f 2ean num er 0 organIsms III 367481 Standard deviation 43743
H= 179 SD= 055 SR= 114 J= 052
A-48
I I
STATION SS Date 14 September 1984 Depth 21 II
Salinity (bottom) 01 ppt Temperature (bottom) 190 C No of samples 10
--------------------------------------------------------------------~-----
Frequency Density (no1I2) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 102 1000 87577 39200 Oligochaeta 34 700 29192 31142 ~iQ2Y~y1 int(mgi~ bithQgl~en~ Yi(gDsect ~Q(~i~Y m~DilgDsecti~ bimDQamp~1h(sect sp ~2(QQhiY slmQD 2poundQiiQlsD ~sD~g~nsecti Chironomid larvae
36 18 16 17
100 16
3
1000 600 800 700
1000 800 300
30910 15455 13738 14596 85860 13738 2576
157BO 20953 10078 14621 32126 10861 4147
Mean number of organismssample 342 Standard deviation 97
2Mean nUllber 0 f organlsms m 293641 Standard deviation 83617
H= 262 SD= 079 SR= 095 J= 083
A-49
Appendix B--Sediment particle size and organic content of the Cathlamet Bay
benthic invertebrate sites 13 March through 14 September
1984
iii
1
Station 18a 48 54 57
Survey 1 1 1 1
Month March March March March
Day 13 13 13 13
Particle size (mm) Phib Percent by weight
gt 40 -2 000 000 000
20- 40 -1 000 000 000
10- 20 0 000 009 000
05- 10 1 018 1079 032
025- 050 2 545 7583 2468
0125- 025 3 8731 1225 6783
00625-0125 4 491 037 657
lt0625 (5-12) 216 067 060
Organic Content 160 116 128
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
b Phi= -log2(sediment particle diameter in mm)
B-1
Station 18a 48 54 57
Survey 2 2 2 2
Month April April April April
Day 5 5 5 5
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 003 093 000
05shy 10 1 005 31 75 023
025shy 050 2 087 5904 2368
0125- 025 3 6316 750 7155
00625-0125 4 3056 026 427
lt0625 (5-12) 533 052 028
Organic Content 081 077 065
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-2
Station 45 55 58
Survey 3 3 3 3
Month April April April April
Day 18 18 18 18
Particle size (mm)
gt 40
Phi
-2
Percent by weight
000 000 000
20shy 40 -1 000 000 000
10shy 20 0 005 009 004
05shy 10 1 010 027 013
025shy 050 2 015 095 225
0125- 025 3 097 536 6111
00625-0125 4 453 2821 2205
lt0625 (5-12) 9420 6511 1442
Organic Content 31 42 14
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-3
Station 18a 45 55 58
Survey 4 4 4 4
Month May May May May
Day 4 4 4 4
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 021
05shy 10 1 000 065 063
025shy 050 2 012 370 230
0125- 025 3 091 4099 4696
00625-0125 4 322 3650 3052
lt0625 (5-12) 9575 1810 1939
Organic Content 330 180 160
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-4
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
5
May
17
000
000
005
016
217
5862
2729
1170
100
45 55 58
5 5 5
May May May
17 17 17
Percent by weight
000 000
000 000
005 008
113 031
325 274
1903 5613
2784 2401
4870 1672
240 110
000
000
000
010
020
079
397
9494
390
B-5
Station 18al 45 55 58
Survey 6 6 6 6
Month June June June June
Day 6 6 6 6
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 020
05shy 10 1 005 051 027
025shy 050 2 005 301 1 79
0125- 025 3 074 3189 5404
00625-0125 4 599 4118 2885
lt0625 (5-12) 9317 2332 1485
Organic Content 340 240 150
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-6
Station
Survey
Month
Day
Particle size Cmm) Phi
gt 40 -2
20shy 40 -1
10shy 20 a
05shy 10 1
025shy 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
7
June
18
000
000
005
029
138
3917
4143
1768
180
45
7
June
18
55 58
7 7
June June
18 18
Percent by weight
000
000
000
010
020
080
427
9464
310
000 000
000 000
000 007
011 022
057 190
957 5286
3023 2642
5957 1853
1 70 110
B-7
Station 18al 45 55 58
Survey 8 8 8 8
Month July July July July
Day 2 2 2 2
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 006 002 006
05shy 10 1 006 0l3 023
025shy 050 2 017 088 171
0125- 025 3 074 2712 5365
00625-0125 4 552 3892 3081
lt0625 (5-12) 9345 3294 l354
Organic Content 410 210 160
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-8
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
9
July
17
000
000
003
013
130
4294
4434
1127
130
45
9
July
17
Percent
000
000
000
006
012
051
046
9885
290
55
9
July
17
by weight
000
000
019
048
091
628
3616
5597
030
58
9
July
17
000
000
004
022
158
5017
3148
1650
140
B-9
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18al
10
August
1
45
10
August
1
55
10
August
1
58
10
August
1
Percent by weight
000 000
000 004
001 004
009 018
018 088
098 306
049 2510
9824 7070
000
005
045
763
3604
4495
932
156
100 190 060
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-10
Station 18 45 55 58
Survey 11 11 11 11
Month August August August August
Day 17 17 17 17
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000 000
20- 40 -1 005 000 000 000
10- 20 0 021 003 000 210
05- 10 1 064 009 000 159
025- 050 2 226 027 045 2656
0125- 025 3 3259 131 712 3719
00625-0125 4 4327 195 1737 1159
lt0625 (5-12) 2098 9635 7506 2097
Organic Content 210 300 160 100
Ii I
B-11
Station
Survey
Month
Day
Particle size (mm) Phi
gt40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
12
August
29
000
000
012
046
186
3465
4498
17 93
241
45
12
August
29
55 58
12 12
August August
29 29
Percent by weight
000
000
002
009
026
118
189
9656
540
000 000
000 000
003 011
011 028
055 1013
859 5033
1596 1827
7476 2089
1 70 120
B-12
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
_-------------------- shy
B-13
STATION 55 Date 17 May 1984 Depth 24 II
Salinity (bottom) 00 ppt Telllperature (bottom) 126 C No of samples 10
Total Frequency occurrence
Taxa nUllber (X) X SD --------------------------------------------------------------~-----------
Nematollorpha 2 200 171 7 3620 Nematoda 63 1000 54092 35297 Oligochaeta 94 1000 80708 44004 ~~iQQY~k~~l iQt~(m~Qi bitnQg~Qh~~ Yi[~Q gQ[QipoundY~ mni~Q~i Ostracoda
10 9 4 2
600 800 300 100
8586 7727 3434 171 7
9050 4874 6003 5430
bimnQ~~ln~[e sp ~Q(QQbiYm mQD ~Q[QQbiYm 2inipoundQ[n~ Chironomid larvae
6 142
3 1
600 1000 200 100
5152 121921
2576 859
4434 50682 5795 2715
Mean number of organismssample 336 Standard deviation 62
2Mean num ber 0 f organisms m 288490 Standard deviation 53421
H= 214 SD= 071 SR= 119 J= 062
A-17
STATION 45 Date 1 June 1984 Depth 61 m Salinity (bottom) 01 ppt Temperature (bottom) 139 C No of samples 10
Total Frequency occurrence
Density (no2)
Taxa nUllber (1) X SD
Nematoda 174 900 149396 132347 Turbellaria 5 200 4293 10898 ~~~QiQ~sect tmQtpoundQ~ ~QQsectQ flQi~sect Oligochaeta ~~iQQysecttygl~ iQl~rm~~i2 ~Q[Qi~~l~ ~~DilgDsectisect Ostracoda
5 20
190 103
12 5
400 900
1000 900
60 (I 400
4293 17172
163134 88436 10303 4293
6071 8095
92563 51524 11304 6071
bimnQpoundytng[ sp ~gQmYsectisect IDg[pound~Qisect ~Q[QQhi~m sectlmQDisect sectpoundQtiQlsectQ pound~Qgsectisect ChironQmid larvae
33 1
10 375
2
900 100 700
1000 200
28334 859
8586 321975
171 7
17196 2715 7010
179201 3620
Mean number of organismssample 935 Standard deviation 254
nurn b 0 f 2lean er organlsms m 802791 Standard deviation 218423
H= 239 SD= 075 SR= 1 22 J= 065
A-18
STATION 18 Date 1 June 1984 Depth 30 AI
Salinity (bottom) 00 ppt Temperature (bottom) 134 C No of samples 11
Frequency Density (no 1m2)
Taxa Total number
occurrence (X)
---------------- shyX SD
Turbellaria 14 636 10928 1157 7 ~~~Qltlg~ ilipoundQ~ Oligochaeta
10 178
727 1000
7805 138937
601 6 67913
~~iQQy~tY~l~ ill~[m~Qi~ 122 636 95227 93619 ~Q[Qipound~ l~i~lsectisect Ostracoda
7 1
455 9 1
5464 78 1
6946 2589
billQylhg[ Spa 16 818 12489 10420 GQ[QQQil HQi~ 139 1000 108496 70934 gQ[Qebi secteiifQ[~ sectQiiQi2 ~Q~sectisect Diptera pupae
1 2 1
9 1 182
11 1
781 1561 781
2589 3473 2589
Chironomid larvae 2 182 1561 3473
Mean number of organismssample 714 Standard deviation 284
nean num b er 0 f organlsms m 2 612728 Standard deviation 244249
H= 232 SD= 075 SR= 1 25 J= 063
A-19
STATION 58 Date 1 June 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 138 C No of samples 10
Frequency Density (noI 2 ) Total occurrence
Taxa number (X) X SD
Nematoda 173 1000 148538 47383 Turbellaria 3 300 2576 4147 Oligochaeta 53 1000 45506 32139 ~giQgY2k~g~ ini~[m~Qi~ bQg91YehY2 Yi[~nsect ~Qr~i~Yl m~nl~n~i
26 1
10
600 100 500
22324 859
8586
3391 2 2715
13424 bimnQpound~Q~[ sp ~Q9~m[Y poundgnitYpoundQlysect ~QtQehiYm ~lQni
4 1
46
200 100
1000
3434 859
39496
8295 2715
22243 Chironomid larvae 1 100 859 271 5
Mean number of organismssample 318 standard deviation 103
M b f I 2ean num er 0 organlsms III 273035 Standard deviation 88842
H = 1 99 SD= 065 SR= 1 08 J= 060
A-20
STATION 55 Date 1 June 1984 Depth 27 m Salinity (bottom) 00 ppt Temp era t u r e (b 0 t tom) 140 C No of samples 10
Frequency Density (nom 2 ) Total occurrence
Taxa nueber (X) X SD
Nematoda 157 1000 134800 69524 Turbellaria 9 400 7727 13696 tlHl~lk ~2~~iQH 1 100 859 2715 Oligochaeta 49 1000 42071 32745 ~~iQQysect~gl~ S[l9sect bHbQghQb~~ Yirl~
10 1
400 100
8586 859
12799 2715
tQ[Qpoundls l2lilUsect bilQHSbg[ sp ~QrQQbil nllQisectHarpacticoida
4 7
134 1
400 500
1000 100
3434 6010
115052 859
4434 7069
44742 271 5
sectpoundQUQlls poundsQgn~sect Chironomid larvae
1 1
100 100
859 859
271 5 2715
Hydracarina 1 100 859 2715
Hean number of organismssample 376 Standard deviation 132
M b f 2ean num er 0 organIsms m 322834 Standard deviation 113127
H= 202 SD= 068 SR= 1 40 J= 055
A-21
STATION 45 Date 18 June 1984 Depth 67 m Salinity (bottom) 01 ppt Temperature (bottom) 149 C No of samples 10
Frequency Density (nom2)
Taxa Total nUllber
occurrence ex) i SD
Nematoda 109 1000 93587 3891 7 Turbell ari a 3 200 2576 5795 ~g~tbg limoipoundQl Q~Qni2 fQ(i~2 Oligochaeta ~gigQ~~Y inl[ggi ~Q[QiSY2 moilo Ostracoda
3 2
194 44
7 3
200 200
1000 1000 200 200
2576 171 7
16656B 37778 6010 2576
5795 3620
118364 36020 12831 5795
bimoQampl~n~[2 sp ~Q[QQbiYm lmgoi Harpacticoida sectpoundQQ1202 pound2022Osect Chironomid larvae
68 1 1
113 2
900 100 100
1000 200
58385 859 859
97022 171 7
97627 2715 2715
73976 3620
Mean number of organismssa_pie 550 Standard deviation 371
Mean nUll ber 0 f organIsms 2II 472230 Standard deviation 318519
H= 242 SD= 077 SR= 1 32 Ja 065
A-22
STATION 18 Date 18 June 1984 Depth 34 m Salinity (bottom) 00 ppt Temperature (bottom) 155 C No of samples 10
Frequency Density (nom 2) Total occurrence ----------------shy
Taxa nUlber (Z) X SD
Neutoda 291 1000 249853 138826 Turbellaria 1 100 859 2715 ~~n~~nki~ sectQ~~iQ~2 ~g~ntbg2 limni~Q9 Oligochaeta
1 3
123
100 300
1000
859 2576
105608
271 5 4147
48240 ~~igQY~~~~9 int~(mgii ~Q[~i~~~ mini~ni bimnQ~ylbg(~ Spa
67 6 5
1000 500 400
57526 5152 4293
40485 6003 6071
~Q(QebiYm ~imQnisect Harpacticoida
80 2
1000 200
68688 171 7
41276 3620
sect~QttQini ~2nig~n~i Chironomid larvae
2 4
200 300
171 7 3434
3620 6003
Mean number of organismssample 585 Standard deviation 194
I 2Mean urn b er 0 f organIsms m 502281 Standard deviation 166943
H= 203 SD= 068 SR= 1 20 J= 057
A-23
STATI ON 58 Date 18 June 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (noI 2) Total occurrence
TaKa number (X) X SD
Nellertea 2 100 1717 5430 Nematoda 160 1000 137376 6361 1 Turbellaria 4 400 3434 4434 Oligochaeta 36 1000 3091 0 14705 ~iQQYik~ Q1rQ 4 300 3434 6003 bitnQgl~ebysect YrDsect ~Q[QiY~ ~~nni biQQpoundY1h[ sp ~Q[Qeng ~ilQD Chironomid larvae
3 1 3
61 1
300 100 300
1000 100
2576 859
2576 52375
859
4147 2715 4147
1428 1 2715
Chironollid pupae 1 100 859 271 5
Mean number of organismssample 276 standard deviation 72
nean nurn b er 0 f organIsms I 2 236974 Standard deviation 61410
H = 1 78 SD= 060 SR= 1 23 J= 051
A-24
STATION 55 Date 18 June 1984 Depth 18 m Salinity (bottom)1 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (no 1m2) occurrence
Taxa (X) X SD
Nematoda 160 1000 137376 43967 Turbellaria 1 100 859 271 5 Oligochaeta 61 1000 52375 31985 ~~iQQY~kY~~ int~[mQi~ ~Q[Qipound~l~ m~nini~ biIDnQ~Ylb[s sp
3 3 3
300 300 300
2576 2576 2576
4147 4147 4147
~Q[Q~bi~ ~slIDQni~ Chironomid larvae
85 6
1000 600
72981 5152
34165 4434
Mean number of organismssample 322 Standard deviation 75
2Mean number 0 f organIsms m 276469 Standard deviation 64099
H= 178 5D= 065 SR= 0B4 J= 059
A-25
Frequency Density (no2) occurrence -----------------
Taxa (7) X SD
Nematoda 104 1000 89294 47409 Turbell ar i a 1 100 859 2715 ~~~nQ~sect imni~Q~ tjQQsectQlis flQig~ Oligochaeta
2 1
297
100 100
1000
171 7 859
255004
5430 271 5
146273 ~~i~QYsect~Y~lls ilr2is gQrQi~y~ IDDilDia
24 4
600 300
20606 3434
27212 6003
Ostracoda 2 200 171 7 3620 biDQSy~b~C~ sp M~QYsectisect m~r~~Qi ~QrQeniy QD Harpacticoida
157 1 1 1
900 100 100 100
134800 859 859 859
73197 2715 2715 2715
sectpoundQttQDs SsDQD 113 900 97022 61656
STATION 45 Date 2 July 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) No of samples 10
172 C
Mean number of organismssample 708 Standard deviation 339
M ean num b er f 20 organisms 607889 Standard deviation 290B22
H= 216 SD= 073 SR= 1 27 J= 058
1-26
STATION 18 Date 2 July 1984 Depth 24 WI
Sal inity (bottom) 00 ppt Temperature (bottom) 172 C No of samples 10
--------------------------------~-----------------------------------------Frequency Density (nom2)
Total occurrence Taxa number (7) X SD
Nematoda 202 1000 173437 113532 ~~~nih~sect mnpoundQ~ Oligochleta
4 102
400 1000
3434 87577
4434 54873
~~igQYsect~Y~12 inl~rmgi2 ~Q[~poundYl~ m~ni~nsectisect bimnQpoundylh~[~ Spa
115 4
15
900 300 900
98739 3434
12879
100720 6003 9274
~Q[QQniY~ sect~QDi~ 55 900 47223 40525 Harpacticoida 1 100 859 2715 sectpoundQiiQlD SDg~DEisect Chironomid larvae
2 6
200 400
1717 5152
3620 7240
Hymenoptera 1 100 859 2715 Hydracarina 1 100 859 2715
Mean number of organismssample 508 Standard deviation 253
2Mean num ber 0 f organIsms m 436169 Standard deviation 217580
H= 225 SD= 074 SR= 1 22 J= 063
A-27
STATION 58 Date 2 July 1984 Depth 58 1
Salinity (bottom) 00 ppt Temperature (bottom) IBO C No of samples 10
Frequency Density (no2) Total occurrence
Taxa number ltX) i SD
Nematoda 151 1000 129649 42729 Turbellaria 1 100 859 2715 01 i gochaeta 41 1000 35203 22698 ~~i~e~~~ int~~m~~ 3 200 2576 5795 btbQglYRhY~ Yir~n~ ~e~~ampy mni~niii bimQeamp~tb~ sp ~e~eQhiY ~mQni Chironomid larvae
1 4 2
68 1
100 300 200
1000 100
859 3434 171 7
58385 859
271 5 6003 3620
1557 1 2715
Mean number of organisassample 272 Standard deviation
I 2Mean num ber 0 f organIsms I 233539 Standard deviation 62546
H = 1 69 SD= 061 SR= 099 J= 053
A-28
73
STATION 55 Date 2 July 1984 Depth 15 III
Salinity (bottom) 00 ppt Temperature (bottom) 182 C No of samples 10
Frequency Density (nom2) occurrence
Taxa (X) X SD
Nematoda 184 1()00 157982 5264B Turbellaria 1 100 859 271 5 Oligochaeta ~~iQQ~sect~Y~ll~ n~[~~Qi~ bitnggYQDYsect Yi[~nsect ~QrQipoundM2 m2ni~nsectisect bimnQpoundYn~[2 sp ~QrQQhiM Qni Harpacticoida
91 2 1 B 2
96 2
1000 200 100 500 200
1000 200
78133 171 7 859
6869 171 7
82426 1111
26058 3620 271 5 1890 3620shy
25980 3620
ChirDnomid larvae 5 400 4293 6071 Chironolllid pupae 1 100 859 2715
Mean number of organismssample 393 Standard deviation 53
2t1ean nUllber Df organlsms III 337430 Standard deviatiDn 45080
H= 187 SD= 067 SR= 116 J= 054
A-29
STATION 45 Date 17 Jul y 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (X) X SD
Nematoda 215 1000 184599 45837 ~~n~b~~ imDipoundQ Qe~Qni fllHi2
3 1
300 100
2576 859
4147 2715
Oligochaeta 305 1000 261873 147955 ~~iQQY~k~ in~rm~2i ~Qr~ipoundYl IDniln~i~ Ostracoda
17 1 2
500 100 200
14590 859
171 7
22554 2715 3620
bmnQpound~ihr sp ~QCQQhiY ~lQD~
176 1
1000 100
151114 859
57125 2715
Harpacticoida 4 300 3434 6003 sectQ~~Qn poundnQnai~ Chironomid larvae
91 5
1000 400
78133 4293
61310 6071
Mean number of organismssample 821 Standard deviation 275
M b f 2ean num er 0 organlsms m 70491 1 Standard deviation 236369
H= 215 SD= 073 SR= 114 J= 060
A-30
STATION 18 Date 17 Jul y 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom 203 C No of samples 10
Frequency Density (001 2 Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 339 1000 291065 119140 Turbellaria 3 200 2576 5795 ~~2~b~~ limnipoundQ12Oligochaeta
4 18S
300 1000
3434 161417
6003 89393
~~iQQy~~~ls in~(ID~Qi bim~Qampy~bg(2 Spa
34 16
800 700
29192 1373B
22967 15252
~g(gebi~m ~21mQni2 Harpacticoida
52 3
1000 200
44647 2576
25212 5795
2ampQ11Q1202 ampS02Qg~2i2 Chironomid larvae
18 10
700 700
15455 8586
13904 701 0
Mean number of organi$mssample 667 Standard deviation IBB
H ean nurn b er 1 20 f organIsms m 572686 Standard deviation 161750
H = 1 99 SD= 065 SR= 090 J= 060
A-31
STATION 58 Date 17 July 1984 Depth 55 AI
Salinity (bottom) 00 ppt Temperature (bottom) 197 C No of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nellatoda 173 1000 14853B 66390 Turbellaria 1 100 859 271 5 ~~~n~hu ini~QA Oligochaeta
1 46
100 1000
859 39496
2715 26293
~gipoundQy~~ygl2 in~rJg~i~ b1nQglYRnY~ Yi( Bivalvia
6 2 1
400 200 100
5152 1717 859
8295 3620 271 5
ei~ IDnH~n~i~ 2 200 171 7 3620 Ostracoda 1 100 959 271 5 biIDQHlh~( Spa ~Q(QRbim ~21Qnisect Diptera pupae
1 94
1
100 1000 100
859 80708
859
2715 35332 2715
Heleidae 1arvae 5 500 4293 4525 Chironomid larvae 1 100 859 2715
Mean number of organismssample 335 Standard deviatiDn 113
Mean number of organismsRI2 287631 Standard deviation 97413
H= 1 86 SO= 064 SR= 155 J= 049
A-32
STATION 55 Date 17 July 1984 Depth 18 m Sali nity (bottom) 00 ppt TeAlperature (bottom) 199 C No of samples 10
Frequency Density (nom2 ) occurrence
Taxa (X) x S D
Nematoda 61 1000 52375 33972 Turbellaria 1 100 859 2715 Oligochaeta 24 900 20606 11590 ~~i2QY~k~~1 iOi[2 bimDQ~xlb~r sp ~Q[QQhi~ sectgni~ Chironomid larvae
3 1
38 3
200 100
1000 300
2576 859
32627 2576
5795 2715
19326 4147
Mean number of organismssample 131 standard deviation 54
M b f 2ean num er 0 organIsms 112477 Standard deviation 46757
H= 184 SD= 066 SR= 085 J= 065
bull
A-33
STATION 45 Date 1 August 1984 Depth 58 m Sal i nity (bottoll) 03 ppt Temperature (bottom) 203 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa nUllber (X) X SD
Nematoda 145 1000 124417 52344 Turbellaria 1 100 859 2715 Mmth~sect iHpoundQ~ Q~~Qi ilQ[i9Oligochaeta
5 3
196
500 300
1000
4293 2576
168286
4525 4147
91064 ~igQYsect~~li int9i Ostracoda
2 3
100 300
171 7 2576
5430 4147
bimnQpoundtl sp ~Q[Q2hiY sectlQni~
240 6
1000 600
206064 5152
73526 4434
sectpoundQtQl poundngnai~Helei dae larvae
1862 1
1000 100
1598713 859
966134 271 ~
Mean number of organismssample 2464 Standard deviation 1156
211 ean num ber 0 f organIsms II 2115590 Standard deviation 992518
H= 124 SD= 041 SR= 089 J= 036
A-34
STATION 1S Date 1 August 1984 Depth 24 II
Salinity (bottom) 00 ppt Temperature (bottom) 198 C No of samp I es 10
Frequency Density (nom2) occurrence ---------------- shy
Taxa (X) X S D
Nuertea 1 100 859 2715 Nellatolllorpha 1 100 859 2715 Nematoda 248 1000 212933 108288 Turbellaria 4 400 3434 4434 ~untb~la Hli~g Oligochaeta
4 206
400 1000
3434 176872
4434 75309
~~igQYli~dli i[t~(gi~ ~QtQpound l binQ~ybt2 sp ~2l~bi Q[i ~2tlgtQ(ila tirisect sectpoundQtel poundl9lla Chironomid larvae
10 1
20 205
1 574
9
500 100 800
1000 100
1000 400
8586 859
17172 176013
859 492836
7727
10709 271 5
14021 48104
271 5 150531
13696
Mean number of organismssample 1284 Standard deviation 290
M b f I 2ean nurn er 0 organIsms III 1102442 Standard deviation 2488B5
H= 211 SD= 071 SR= 1 16 J= 057
A-35
STATION 58 Date 1 August 1984 Depth 55 m Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samp 1es 10
Frequency Densi ty _ ltnom2 ) Total occurrence
Taxa number (7) X SD
Nemertea 1 100 859 2715 Nematoda 22 900 18889 15036 Turbellaria 1 100 859 2715 Oligochaeta 19 700 16313 17385 biiQQgl~QhY~ YiCg~~ 2 200 171 7 3620 ~Q[~i~~l~ m2nil~n2i2 ~Q[QehiYm ~lmQni2
4 164
300 1000
3434 140810
6003 103048
Heleidae larvae 8 500 6869 8868
Mean number of organismssample 221 Standard deviation 111
I 2Mean num ber 0 f organIsms m 189751 Standard deviation 95391
H = L 37 SD= 043 SR= 090 J= 046
A-36
STATION 55 Date 1 August 1984 Depth 15 m Salinity (bottoll) 01 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (i ) X SD
Nemertea 1 100 859 2715 Neutoda 122 1000 104749 7394B Turbellaria 4 300 3434 6003 ~~~~~nt~ secte~poundQa~ Oligochaeta
1 118
100 1000
859 101315
2715 61223
~giQgY~k~~l iot~[m~Qi btbQg~2b~ Y[O ~grQipound~ ~nl~ni b~ngpound~tb~[ Spa
3 1 5 1
200 100 500 100
2576 859
4293 859
5795 2715 4525 2715
~Q[QebiYm ~mQoi sect~QttQ~ ~OQOi Heleidae larvae
42 2 2
800 200 100
36061 171 7 171 7
21341 3620 5430
Chironomid larvae 4 400 3434 4434
Mean number of organismssapIe 306 Standard deviation 169
M b f I 2ean nurn er 0 organIsms m 262732 Standard deviation 145101
H = 198 SD= 067 SR= 1 45 J= 054
A-37
~-- --------------~~-------------
STATION 45 Date 17 August 1984 Depth 61 1
Salinity (bottom) 10 ppt Temperature (bottom) 210 C No of samp 1es 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nematoda 240 1000 206064 130213 ~~h~sect limQ tjQ~~Hi~ fQ[i~~ Oligochaeta
31 2
245
400 100
1000
26617 1717
210357
75228 5430
121374 babgglYQbl~ Yi[~sect 1 100 859 2715 Ostracoda 1 100 859 271 5 biQ~xtb~[ Spa ~~Q~~isect ~[pound~Qisect ~Qgebi HQOi
333 2
143
1000 200
1000
28591 4 171 7
1227BO
106553 3620
106860 sectpoundQUg~ poundg~nsectisect 1738 1000 1492247 68441 7
Mean number of organismssample 2736 Standard deviation 944
M b f I 2ean num er 0 organlslls m 2349130 Standard deviation 810600
H= 172 SD= 056 SR= 079 J= 052
A-38
STATION 18 Date 17 August 1984 Depth 27 III
Sal i ni ty (botto) 01 ppt Temperature (bottom) 214 C No of samples 10
Frequency Density (nom 2 ) occurrence
Taxa (X) X SD
Nematoda 186 1000 159700 62468 ~tgt SPa 2 100 171 7 5430 Turbellaria 8 400 6869 8868 ~~ntbg2 imnipoundQ 12 700 10303 11304 Oligochaeta 283 1000 242984 90509 ~~iQQY~~Y~lls inlgtmggisBivalvia
4 1
400 100
3434 859
4434 271 5
~Qt~i~Y nilnsectisectbimnQpoundttbg[s SPa ~QtQQbi~ islmQDi2
1 17
286
100 900
1000
859 14596
245560
271 5 10747 83461
sectpoundetteln poundDsggnsectisect Chironomid larvae
526 4
1000 3Q0
451624 3434
179610 6003
Mean number of organismssapIe 1330 Standard deviation 162
Mean nurn ber I 20 f organIsms m 1141938 Standard deviation 139389
H= 214 SD= 073 SR= 1 06 J= 060
A-39
STATION 58 Date 17 August 1984 Depth 55 II
Salinity (bottom) 01 ppt Temperature (bottom) 220 C ND of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (7) x S D
Nematoda 68 1000 58385 27689 Turbellar i a 4 200 3434 8295 Oligochaeta 19 800 16313 13084 ~~i~Q~k~~l~ in~~[m~i bitUQ9Y2bYa Yi[~na Bivalvia
3 3 4
300 300 300
2576 2576 3434
4147 4147 6003
gQ[QipoundYl~ mnilDa 1 100 859 2715 binQpoundY~[ sp gQ[Q2UY a~mgnia sect~Qtgl~n ~n~~ni
2 338
6
100 1000 400
171 7 290207
5152
5430 56636 7240
Mean number of organismssample 448 Standard deviation 72
W b f 2lean num er 0 organlsms II 384653 Standard deviation 61988
H = 1 27 SD= 041 SR= 1 02 J= 038
A-40
STATION 55 Date 17 August 1984 Depth 18 m Salinity (bottom) 00 ppt Temperature (bottol) 223 C No of samples 10
Frequency Density (nom 2 ) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 291 1000 249853 118104 Turbellaria 1 100 859 2715 M~ntb~ mni~Q Oligochaeta
1 47
100 1000
859 40354
2715 28347
~~iQQ~sectkY~ll int~[m~gi bitbQQ1YSDY Yi(gn Bivalvia
25 12
6
900 500 400
21465 10303 5152
1231 0 18459 7240
~Q~2ipoundY mnil~ni Ostracoda
11 8
400 600
9445 6869
12442 6773
bmnQpoundYb~r~ SPa 52 1000 44647 19746 ~QrQsbY lmgnisectsQiielo snQ~ni~ Chironomid larvae
43 5
15
1000 400 BOO
36920 4293
12879
21436 6071 8344
Mean number of organismssample 517 Standard deviation 174
M b f I 2ean num er 0 organlsms m 443896 Standard deviation 149431
W = 228 SD= 065 SR= 1 33 J= 062
A-41
STATION 45 Date 29 August 1984 Depth 55 III
Salinity (bottom) 07 ppt Temperature (bottom) 199 C No of samples 10
Frequency Density (noI 2) Total occurrence
Taxa number (X) X SD
Nematoda 192 1000 164851 98380 ~sntbsect limnipoundQlDligochaeta
2 198
200 1000
171 7 170003
3620 67339
~Q[eipoundYls msniln~isect Ostracoda
1 4
100 400
859 3434
2715 4434
bimnQpoundytb[s Spa gQ[Qeniy sect21QOi~ sectpoundQttQlsO poundsOsggOi
164 87
2468
1000 1000 1000
140810 74698
2119025
39283 39460
840890
Mean number of organismssample 311 6 Standard deviation 101 1
ill b f 2nean nUll er 0 organIsms 2675398 Standard deviation 8682B8
W= 116 SD= 036 SR= 060 J= 039
A-42
STATION 18 Date 29 August 1984 Depth 30 bull Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samples 10
Total Frequency occurrence
Densi ty 2
(nom )
Taxa number (~ ) x S D
Nematoda 150 1000 128790 28905 Turbellaria 7 400 6010 9096 ~nh imni~Qj Oligochaeta ~~i~2Y~k~~1 ini~CIDgii bih2g~Qb~ Yi(~U2 Bivalvi a
B 145
1 1 2
600 1000
100 100 200
6869 124497
859 859
171 7
677 3 84732
271S 2715 3620
~Q[Qi~yli miDllgni bimn2pound~ih~C sp ~QtQehiY imQUia Harpacticoida
7 7
265 1
500 300
1000 100
6010 601 0
227529 859
8145 10747
139462 2715
sect~QtiQDi ~Q~Q~i~ Chironomid larvae
2471 2
1000 200
2121601 171 7
1063112 3620
Mean number of organismssample 3067 Standard deviation 121 9
2Mean number 0 f organIsms m 2633326 standard deviation 1046718
H = 1 09 SD= 034 SR= 1 04 J= 029
A-43
STATION 58 Date 29 August 1984 Depth 55 111
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (noI 2 ) Total occurrence -----------------
Taxa nUllber (X) X SD
Nemertea 4 400 3434 4434 Nuatoda 64 1000 54950 25016 Turbellaria 9 400 7727 11047 ~Hl~b limli~Q19 Oligochaeta
1 37
100 1000
859 31769
2715 19006
i~Qyh il(~~ bHtlQSlheln Yl Bivalvia
4 4
20
200 300 400
3434 3434
17172
8215 6003
26541 ~e(ijY l bQ~dlH sp
26 1
700 100
22324 859
25662 2715
~Q[QQhil iQ sectjgUell HD Heleidae larvae
418 20
1
1000 800 100
358895 17172
859
129443 12799 271 5
Mean number of organismssample 609 Standard deviation 175
nean num b er 0 f organIsms 1 111 2 522887 Standard deviation 150164
H= 176 SD= 051 SR= 1 30 J= 047
A-44
I I
I
I
STATION SS
Date 29 August 1984 Depth 21 1
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (no2) Total occurrence
Taxa nUllber (X) x S D
Nematoda ISO 1000 128790 37969 Turbellaria 1 100 859 271 5 Oligochaeta 48 1000 41213 16088 ~i~g~sect~~l iQ~~mgi bi~QQg~gb~sect ~i~nsect
10 14
600 600
eSB6 12020
9050 14137
Bivalvia 4 200 3434 7240 ~Q[Q~Yl niQaa Ostracoda
15 7
700 SOO
12879 6010
15806 7069
bmQg~~~b~ SPa 14 800 12020 8295 ~g[gaby mgni sect~g~~Qn ~ngnai Chironomid larvae
IB4 25 9
1000 900 700
157982 21465
7727
35563 16810 6335shy
Mean number of organismssample 481 Standard deviation B6
2Mean number 0 f organlsms m 412987 Standard deviation 74131
H= 24S SD= 074 SR= 1 23 J= 068
A-45
STATION 45 Date 14 September 1984 Depth 61 11
Salinity (bottom) 03 ppt Temperature (bottom) IB4 C No of samples 10
---------------------------------~----------------------------------------
Taxa TotalnUlllDer
Frequency occ~~~ence
Density (no 2) -----X-------sect7B
Nematoda 189 1000 162275 85233 t1tQ SPa
Turbellaria 2 2
200 100
171 7 171 7
3620 5430
~~~nIng limoifQl t1QQQDi~ flQriQ Oligochaeta
5 19
142
400 800
1000
4293 1631 3
121921
6071 12442 30504
~QQifYl mDl~D bimoQpoundt1hgr Spa Cumacea
19 184
2
800 1000 200
1631 3 157982
171 7
130B4 69541 3620
~Q[QnniYm ~~lmQDi Harpacticoida
118 1
1000 100
10131 5 B59
43367 2715
sectfQIIQD fOQgO Chironomid larvae
1780 1
1000 100
1528308 859
673586 2715
Mean number of organismssample 2464 Standard deviation 874
M ean num b er f 20 organlsms 2115590 Standard deviation 750305
H= 151 SD= 046 SR= 1 07 J= 041
A-46
STATION 18 Date 14 September 1984 Depth 21 III
Salinity (bottom) 01 ppt Temperature (botto) 182 C No of samples 10
Frequency DenSity (nom 2 ) Total occurrence ---------------- shy
Taxa nUlDber (i) X SD
Nemertea 1 100 859 271 5 Nematoda 186 1000 159700 44925 Turbellaria 16 400 13738 20717 ~~Dth~~ limni~Ql Oligochaeta
13 55
700 900
11162 47223
9096 30085
~Q~ei~Yl nil~Qi~ 17 900 14596 7069 bimDg~lbg[ Spa b 500 5152 6003 ~Q[Q2niY ~lgQi~ Harpacti coi da
562 2
1000 200
482533 171 7
136766 3620
sectpoundQttQ~Q~ ~n~ni 791 1000 679153 324290
Mean number of organismssample 1649 Standard deviation 447
I 211ean nUll ber 0 f organIsms I 1415831 Standard deviation 384136
H= 179 SD= 064 SR= 084 J= 054
A-47
STATION 58 Date 14 September 1984 Depth 58 III
Salinity (bottom) 01 ppt Temperature (bottom) 191 C No of sampl es 10
-------------------------------------------~------------------------------Frequency Density (nom 2 )
Total occurrence Taxa number eX) X SD
Nemertea 1 100 859 2715 Nematoda 55 1000 47223 18658 Turbellaria 10 500 8586 11448
1 100 859 2715 Oligochaeta 41 1000 35203 17850 ~~iQQ~~gll iu1g[m~i ~Q[Q~Yl nilD bimnQ~Y~h[ Spa ~Q[Q~hiYm lmgui sectpoundQilg1D poundU2D Chironomid larvae
4 10
2 277
23 4
100 500 200
1000 700 300
3434 8586 171 7
237832 19748 3434
10861 11448 3620
50561 21051 6003
Mean number of organismssample 428 Standard deviation 51
M b f 2ean num er 0 organIsms III 367481 Standard deviation 43743
H= 179 SD= 055 SR= 114 J= 052
A-48
I I
STATION SS Date 14 September 1984 Depth 21 II
Salinity (bottom) 01 ppt Temperature (bottom) 190 C No of samples 10
--------------------------------------------------------------------~-----
Frequency Density (no1I2) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 102 1000 87577 39200 Oligochaeta 34 700 29192 31142 ~iQ2Y~y1 int(mgi~ bithQgl~en~ Yi(gDsect ~Q(~i~Y m~DilgDsecti~ bimDQamp~1h(sect sp ~2(QQhiY slmQD 2poundQiiQlsD ~sD~g~nsecti Chironomid larvae
36 18 16 17
100 16
3
1000 600 800 700
1000 800 300
30910 15455 13738 14596 85860 13738 2576
157BO 20953 10078 14621 32126 10861 4147
Mean number of organismssample 342 Standard deviation 97
2Mean nUllber 0 f organlsms m 293641 Standard deviation 83617
H= 262 SD= 079 SR= 095 J= 083
A-49
Appendix B--Sediment particle size and organic content of the Cathlamet Bay
benthic invertebrate sites 13 March through 14 September
1984
iii
1
Station 18a 48 54 57
Survey 1 1 1 1
Month March March March March
Day 13 13 13 13
Particle size (mm) Phib Percent by weight
gt 40 -2 000 000 000
20- 40 -1 000 000 000
10- 20 0 000 009 000
05- 10 1 018 1079 032
025- 050 2 545 7583 2468
0125- 025 3 8731 1225 6783
00625-0125 4 491 037 657
lt0625 (5-12) 216 067 060
Organic Content 160 116 128
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
b Phi= -log2(sediment particle diameter in mm)
B-1
Station 18a 48 54 57
Survey 2 2 2 2
Month April April April April
Day 5 5 5 5
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 003 093 000
05shy 10 1 005 31 75 023
025shy 050 2 087 5904 2368
0125- 025 3 6316 750 7155
00625-0125 4 3056 026 427
lt0625 (5-12) 533 052 028
Organic Content 081 077 065
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-2
Station 45 55 58
Survey 3 3 3 3
Month April April April April
Day 18 18 18 18
Particle size (mm)
gt 40
Phi
-2
Percent by weight
000 000 000
20shy 40 -1 000 000 000
10shy 20 0 005 009 004
05shy 10 1 010 027 013
025shy 050 2 015 095 225
0125- 025 3 097 536 6111
00625-0125 4 453 2821 2205
lt0625 (5-12) 9420 6511 1442
Organic Content 31 42 14
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-3
Station 18a 45 55 58
Survey 4 4 4 4
Month May May May May
Day 4 4 4 4
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 021
05shy 10 1 000 065 063
025shy 050 2 012 370 230
0125- 025 3 091 4099 4696
00625-0125 4 322 3650 3052
lt0625 (5-12) 9575 1810 1939
Organic Content 330 180 160
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-4
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
5
May
17
000
000
005
016
217
5862
2729
1170
100
45 55 58
5 5 5
May May May
17 17 17
Percent by weight
000 000
000 000
005 008
113 031
325 274
1903 5613
2784 2401
4870 1672
240 110
000
000
000
010
020
079
397
9494
390
B-5
Station 18al 45 55 58
Survey 6 6 6 6
Month June June June June
Day 6 6 6 6
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 020
05shy 10 1 005 051 027
025shy 050 2 005 301 1 79
0125- 025 3 074 3189 5404
00625-0125 4 599 4118 2885
lt0625 (5-12) 9317 2332 1485
Organic Content 340 240 150
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-6
Station
Survey
Month
Day
Particle size Cmm) Phi
gt 40 -2
20shy 40 -1
10shy 20 a
05shy 10 1
025shy 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
7
June
18
000
000
005
029
138
3917
4143
1768
180
45
7
June
18
55 58
7 7
June June
18 18
Percent by weight
000
000
000
010
020
080
427
9464
310
000 000
000 000
000 007
011 022
057 190
957 5286
3023 2642
5957 1853
1 70 110
B-7
Station 18al 45 55 58
Survey 8 8 8 8
Month July July July July
Day 2 2 2 2
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 006 002 006
05shy 10 1 006 0l3 023
025shy 050 2 017 088 171
0125- 025 3 074 2712 5365
00625-0125 4 552 3892 3081
lt0625 (5-12) 9345 3294 l354
Organic Content 410 210 160
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-8
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
9
July
17
000
000
003
013
130
4294
4434
1127
130
45
9
July
17
Percent
000
000
000
006
012
051
046
9885
290
55
9
July
17
by weight
000
000
019
048
091
628
3616
5597
030
58
9
July
17
000
000
004
022
158
5017
3148
1650
140
B-9
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18al
10
August
1
45
10
August
1
55
10
August
1
58
10
August
1
Percent by weight
000 000
000 004
001 004
009 018
018 088
098 306
049 2510
9824 7070
000
005
045
763
3604
4495
932
156
100 190 060
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-10
Station 18 45 55 58
Survey 11 11 11 11
Month August August August August
Day 17 17 17 17
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000 000
20- 40 -1 005 000 000 000
10- 20 0 021 003 000 210
05- 10 1 064 009 000 159
025- 050 2 226 027 045 2656
0125- 025 3 3259 131 712 3719
00625-0125 4 4327 195 1737 1159
lt0625 (5-12) 2098 9635 7506 2097
Organic Content 210 300 160 100
Ii I
B-11
Station
Survey
Month
Day
Particle size (mm) Phi
gt40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
12
August
29
000
000
012
046
186
3465
4498
17 93
241
45
12
August
29
55 58
12 12
August August
29 29
Percent by weight
000
000
002
009
026
118
189
9656
540
000 000
000 000
003 011
011 028
055 1013
859 5033
1596 1827
7476 2089
1 70 120
B-12
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
_-------------------- shy
B-13
STATION 45 Date 1 June 1984 Depth 61 m Salinity (bottom) 01 ppt Temperature (bottom) 139 C No of samples 10
Total Frequency occurrence
Density (no2)
Taxa nUllber (1) X SD
Nematoda 174 900 149396 132347 Turbellaria 5 200 4293 10898 ~~~QiQ~sect tmQtpoundQ~ ~QQsectQ flQi~sect Oligochaeta ~~iQQysecttygl~ iQl~rm~~i2 ~Q[Qi~~l~ ~~DilgDsectisect Ostracoda
5 20
190 103
12 5
400 900
1000 900
60 (I 400
4293 17172
163134 88436 10303 4293
6071 8095
92563 51524 11304 6071
bimnQpoundytng[ sp ~gQmYsectisect IDg[pound~Qisect ~Q[QQhi~m sectlmQDisect sectpoundQtiQlsectQ pound~Qgsectisect ChironQmid larvae
33 1
10 375
2
900 100 700
1000 200
28334 859
8586 321975
171 7
17196 2715 7010
179201 3620
Mean number of organismssample 935 Standard deviation 254
nurn b 0 f 2lean er organlsms m 802791 Standard deviation 218423
H= 239 SD= 075 SR= 1 22 J= 065
A-18
STATION 18 Date 1 June 1984 Depth 30 AI
Salinity (bottom) 00 ppt Temperature (bottom) 134 C No of samples 11
Frequency Density (no 1m2)
Taxa Total number
occurrence (X)
---------------- shyX SD
Turbellaria 14 636 10928 1157 7 ~~~Qltlg~ ilipoundQ~ Oligochaeta
10 178
727 1000
7805 138937
601 6 67913
~~iQQy~tY~l~ ill~[m~Qi~ 122 636 95227 93619 ~Q[Qipound~ l~i~lsectisect Ostracoda
7 1
455 9 1
5464 78 1
6946 2589
billQylhg[ Spa 16 818 12489 10420 GQ[QQQil HQi~ 139 1000 108496 70934 gQ[Qebi secteiifQ[~ sectQiiQi2 ~Q~sectisect Diptera pupae
1 2 1
9 1 182
11 1
781 1561 781
2589 3473 2589
Chironomid larvae 2 182 1561 3473
Mean number of organismssample 714 Standard deviation 284
nean num b er 0 f organlsms m 2 612728 Standard deviation 244249
H= 232 SD= 075 SR= 1 25 J= 063
A-19
STATION 58 Date 1 June 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 138 C No of samples 10
Frequency Density (noI 2 ) Total occurrence
Taxa number (X) X SD
Nematoda 173 1000 148538 47383 Turbellaria 3 300 2576 4147 Oligochaeta 53 1000 45506 32139 ~giQgY2k~g~ ini~[m~Qi~ bQg91YehY2 Yi[~nsect ~Qr~i~Yl m~nl~n~i
26 1
10
600 100 500
22324 859
8586
3391 2 2715
13424 bimnQpound~Q~[ sp ~Q9~m[Y poundgnitYpoundQlysect ~QtQehiYm ~lQni
4 1
46
200 100
1000
3434 859
39496
8295 2715
22243 Chironomid larvae 1 100 859 271 5
Mean number of organismssample 318 standard deviation 103
M b f I 2ean num er 0 organlsms III 273035 Standard deviation 88842
H = 1 99 SD= 065 SR= 1 08 J= 060
A-20
STATION 55 Date 1 June 1984 Depth 27 m Salinity (bottom) 00 ppt Temp era t u r e (b 0 t tom) 140 C No of samples 10
Frequency Density (nom 2 ) Total occurrence
Taxa nueber (X) X SD
Nematoda 157 1000 134800 69524 Turbellaria 9 400 7727 13696 tlHl~lk ~2~~iQH 1 100 859 2715 Oligochaeta 49 1000 42071 32745 ~~iQQysect~gl~ S[l9sect bHbQghQb~~ Yirl~
10 1
400 100
8586 859
12799 2715
tQ[Qpoundls l2lilUsect bilQHSbg[ sp ~QrQQbil nllQisectHarpacticoida
4 7
134 1
400 500
1000 100
3434 6010
115052 859
4434 7069
44742 271 5
sectpoundQUQlls poundsQgn~sect Chironomid larvae
1 1
100 100
859 859
271 5 2715
Hydracarina 1 100 859 2715
Hean number of organismssample 376 Standard deviation 132
M b f 2ean num er 0 organIsms m 322834 Standard deviation 113127
H= 202 SD= 068 SR= 1 40 J= 055
A-21
STATION 45 Date 18 June 1984 Depth 67 m Salinity (bottom) 01 ppt Temperature (bottom) 149 C No of samples 10
Frequency Density (nom2)
Taxa Total nUllber
occurrence ex) i SD
Nematoda 109 1000 93587 3891 7 Turbell ari a 3 200 2576 5795 ~g~tbg limoipoundQl Q~Qni2 fQ(i~2 Oligochaeta ~gigQ~~Y inl[ggi ~Q[QiSY2 moilo Ostracoda
3 2
194 44
7 3
200 200
1000 1000 200 200
2576 171 7
16656B 37778 6010 2576
5795 3620
118364 36020 12831 5795
bimoQampl~n~[2 sp ~Q[QQbiYm lmgoi Harpacticoida sectpoundQQ1202 pound2022Osect Chironomid larvae
68 1 1
113 2
900 100 100
1000 200
58385 859 859
97022 171 7
97627 2715 2715
73976 3620
Mean number of organismssa_pie 550 Standard deviation 371
Mean nUll ber 0 f organIsms 2II 472230 Standard deviation 318519
H= 242 SD= 077 SR= 1 32 Ja 065
A-22
STATION 18 Date 18 June 1984 Depth 34 m Salinity (bottom) 00 ppt Temperature (bottom) 155 C No of samples 10
Frequency Density (nom 2) Total occurrence ----------------shy
Taxa nUlber (Z) X SD
Neutoda 291 1000 249853 138826 Turbellaria 1 100 859 2715 ~~n~~nki~ sectQ~~iQ~2 ~g~ntbg2 limni~Q9 Oligochaeta
1 3
123
100 300
1000
859 2576
105608
271 5 4147
48240 ~~igQY~~~~9 int~(mgii ~Q[~i~~~ mini~ni bimnQ~ylbg(~ Spa
67 6 5
1000 500 400
57526 5152 4293
40485 6003 6071
~Q(QebiYm ~imQnisect Harpacticoida
80 2
1000 200
68688 171 7
41276 3620
sect~QttQini ~2nig~n~i Chironomid larvae
2 4
200 300
171 7 3434
3620 6003
Mean number of organismssample 585 Standard deviation 194
I 2Mean urn b er 0 f organIsms m 502281 Standard deviation 166943
H= 203 SD= 068 SR= 1 20 J= 057
A-23
STATI ON 58 Date 18 June 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (noI 2) Total occurrence
TaKa number (X) X SD
Nellertea 2 100 1717 5430 Nematoda 160 1000 137376 6361 1 Turbellaria 4 400 3434 4434 Oligochaeta 36 1000 3091 0 14705 ~iQQYik~ Q1rQ 4 300 3434 6003 bitnQgl~ebysect YrDsect ~Q[QiY~ ~~nni biQQpoundY1h[ sp ~Q[Qeng ~ilQD Chironomid larvae
3 1 3
61 1
300 100 300
1000 100
2576 859
2576 52375
859
4147 2715 4147
1428 1 2715
Chironollid pupae 1 100 859 271 5
Mean number of organismssample 276 standard deviation 72
nean nurn b er 0 f organIsms I 2 236974 Standard deviation 61410
H = 1 78 SD= 060 SR= 1 23 J= 051
A-24
STATION 55 Date 18 June 1984 Depth 18 m Salinity (bottom)1 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (no 1m2) occurrence
Taxa (X) X SD
Nematoda 160 1000 137376 43967 Turbellaria 1 100 859 271 5 Oligochaeta 61 1000 52375 31985 ~~iQQY~kY~~ int~[mQi~ ~Q[Qipound~l~ m~nini~ biIDnQ~Ylb[s sp
3 3 3
300 300 300
2576 2576 2576
4147 4147 4147
~Q[Q~bi~ ~slIDQni~ Chironomid larvae
85 6
1000 600
72981 5152
34165 4434
Mean number of organismssample 322 Standard deviation 75
2Mean number 0 f organIsms m 276469 Standard deviation 64099
H= 178 5D= 065 SR= 0B4 J= 059
A-25
Frequency Density (no2) occurrence -----------------
Taxa (7) X SD
Nematoda 104 1000 89294 47409 Turbell ar i a 1 100 859 2715 ~~~nQ~sect imni~Q~ tjQQsectQlis flQig~ Oligochaeta
2 1
297
100 100
1000
171 7 859
255004
5430 271 5
146273 ~~i~QYsect~Y~lls ilr2is gQrQi~y~ IDDilDia
24 4
600 300
20606 3434
27212 6003
Ostracoda 2 200 171 7 3620 biDQSy~b~C~ sp M~QYsectisect m~r~~Qi ~QrQeniy QD Harpacticoida
157 1 1 1
900 100 100 100
134800 859 859 859
73197 2715 2715 2715
sectpoundQttQDs SsDQD 113 900 97022 61656
STATION 45 Date 2 July 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) No of samples 10
172 C
Mean number of organismssample 708 Standard deviation 339
M ean num b er f 20 organisms 607889 Standard deviation 290B22
H= 216 SD= 073 SR= 1 27 J= 058
1-26
STATION 18 Date 2 July 1984 Depth 24 WI
Sal inity (bottom) 00 ppt Temperature (bottom) 172 C No of samples 10
--------------------------------~-----------------------------------------Frequency Density (nom2)
Total occurrence Taxa number (7) X SD
Nematoda 202 1000 173437 113532 ~~~nih~sect mnpoundQ~ Oligochleta
4 102
400 1000
3434 87577
4434 54873
~~igQYsect~Y~12 inl~rmgi2 ~Q[~poundYl~ m~ni~nsectisect bimnQpoundylh~[~ Spa
115 4
15
900 300 900
98739 3434
12879
100720 6003 9274
~Q[QQniY~ sect~QDi~ 55 900 47223 40525 Harpacticoida 1 100 859 2715 sectpoundQiiQlD SDg~DEisect Chironomid larvae
2 6
200 400
1717 5152
3620 7240
Hymenoptera 1 100 859 2715 Hydracarina 1 100 859 2715
Mean number of organismssample 508 Standard deviation 253
2Mean num ber 0 f organIsms m 436169 Standard deviation 217580
H= 225 SD= 074 SR= 1 22 J= 063
A-27
STATION 58 Date 2 July 1984 Depth 58 1
Salinity (bottom) 00 ppt Temperature (bottom) IBO C No of samples 10
Frequency Density (no2) Total occurrence
Taxa number ltX) i SD
Nematoda 151 1000 129649 42729 Turbellaria 1 100 859 2715 01 i gochaeta 41 1000 35203 22698 ~~i~e~~~ int~~m~~ 3 200 2576 5795 btbQglYRhY~ Yir~n~ ~e~~ampy mni~niii bimQeamp~tb~ sp ~e~eQhiY ~mQni Chironomid larvae
1 4 2
68 1
100 300 200
1000 100
859 3434 171 7
58385 859
271 5 6003 3620
1557 1 2715
Mean number of organisassample 272 Standard deviation
I 2Mean num ber 0 f organIsms I 233539 Standard deviation 62546
H = 1 69 SD= 061 SR= 099 J= 053
A-28
73
STATION 55 Date 2 July 1984 Depth 15 III
Salinity (bottom) 00 ppt Temperature (bottom) 182 C No of samples 10
Frequency Density (nom2) occurrence
Taxa (X) X SD
Nematoda 184 1()00 157982 5264B Turbellaria 1 100 859 271 5 Oligochaeta ~~iQQ~sect~Y~ll~ n~[~~Qi~ bitnggYQDYsect Yi[~nsect ~QrQipoundM2 m2ni~nsectisect bimnQpoundYn~[2 sp ~QrQQhiM Qni Harpacticoida
91 2 1 B 2
96 2
1000 200 100 500 200
1000 200
78133 171 7 859
6869 171 7
82426 1111
26058 3620 271 5 1890 3620shy
25980 3620
ChirDnomid larvae 5 400 4293 6071 Chironolllid pupae 1 100 859 2715
Mean number of organismssample 393 Standard deviation 53
2t1ean nUllber Df organlsms III 337430 Standard deviatiDn 45080
H= 187 SD= 067 SR= 116 J= 054
A-29
STATION 45 Date 17 Jul y 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (X) X SD
Nematoda 215 1000 184599 45837 ~~n~b~~ imDipoundQ Qe~Qni fllHi2
3 1
300 100
2576 859
4147 2715
Oligochaeta 305 1000 261873 147955 ~~iQQY~k~ in~rm~2i ~Qr~ipoundYl IDniln~i~ Ostracoda
17 1 2
500 100 200
14590 859
171 7
22554 2715 3620
bmnQpound~ihr sp ~QCQQhiY ~lQD~
176 1
1000 100
151114 859
57125 2715
Harpacticoida 4 300 3434 6003 sectQ~~Qn poundnQnai~ Chironomid larvae
91 5
1000 400
78133 4293
61310 6071
Mean number of organismssample 821 Standard deviation 275
M b f 2ean num er 0 organlsms m 70491 1 Standard deviation 236369
H= 215 SD= 073 SR= 114 J= 060
A-30
STATION 18 Date 17 Jul y 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom 203 C No of samples 10
Frequency Density (001 2 Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 339 1000 291065 119140 Turbellaria 3 200 2576 5795 ~~2~b~~ limnipoundQ12Oligochaeta
4 18S
300 1000
3434 161417
6003 89393
~~iQQy~~~ls in~(ID~Qi bim~Qampy~bg(2 Spa
34 16
800 700
29192 1373B
22967 15252
~g(gebi~m ~21mQni2 Harpacticoida
52 3
1000 200
44647 2576
25212 5795
2ampQ11Q1202 ampS02Qg~2i2 Chironomid larvae
18 10
700 700
15455 8586
13904 701 0
Mean number of organi$mssample 667 Standard deviation IBB
H ean nurn b er 1 20 f organIsms m 572686 Standard deviation 161750
H = 1 99 SD= 065 SR= 090 J= 060
A-31
STATION 58 Date 17 July 1984 Depth 55 AI
Salinity (bottom) 00 ppt Temperature (bottom) 197 C No of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nellatoda 173 1000 14853B 66390 Turbellaria 1 100 859 271 5 ~~~n~hu ini~QA Oligochaeta
1 46
100 1000
859 39496
2715 26293
~gipoundQy~~ygl2 in~rJg~i~ b1nQglYRnY~ Yi( Bivalvia
6 2 1
400 200 100
5152 1717 859
8295 3620 271 5
ei~ IDnH~n~i~ 2 200 171 7 3620 Ostracoda 1 100 959 271 5 biIDQHlh~( Spa ~Q(QRbim ~21Qnisect Diptera pupae
1 94
1
100 1000 100
859 80708
859
2715 35332 2715
Heleidae 1arvae 5 500 4293 4525 Chironomid larvae 1 100 859 2715
Mean number of organismssample 335 Standard deviatiDn 113
Mean number of organismsRI2 287631 Standard deviation 97413
H= 1 86 SO= 064 SR= 155 J= 049
A-32
STATION 55 Date 17 July 1984 Depth 18 m Sali nity (bottom) 00 ppt TeAlperature (bottom) 199 C No of samples 10
Frequency Density (nom2 ) occurrence
Taxa (X) x S D
Nematoda 61 1000 52375 33972 Turbellaria 1 100 859 2715 Oligochaeta 24 900 20606 11590 ~~i2QY~k~~1 iOi[2 bimDQ~xlb~r sp ~Q[QQhi~ sectgni~ Chironomid larvae
3 1
38 3
200 100
1000 300
2576 859
32627 2576
5795 2715
19326 4147
Mean number of organismssample 131 standard deviation 54
M b f 2ean num er 0 organIsms 112477 Standard deviation 46757
H= 184 SD= 066 SR= 085 J= 065
bull
A-33
STATION 45 Date 1 August 1984 Depth 58 m Sal i nity (bottoll) 03 ppt Temperature (bottom) 203 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa nUllber (X) X SD
Nematoda 145 1000 124417 52344 Turbellaria 1 100 859 2715 Mmth~sect iHpoundQ~ Q~~Qi ilQ[i9Oligochaeta
5 3
196
500 300
1000
4293 2576
168286
4525 4147
91064 ~igQYsect~~li int9i Ostracoda
2 3
100 300
171 7 2576
5430 4147
bimnQpoundtl sp ~Q[Q2hiY sectlQni~
240 6
1000 600
206064 5152
73526 4434
sectpoundQtQl poundngnai~Helei dae larvae
1862 1
1000 100
1598713 859
966134 271 ~
Mean number of organismssample 2464 Standard deviation 1156
211 ean num ber 0 f organIsms II 2115590 Standard deviation 992518
H= 124 SD= 041 SR= 089 J= 036
A-34
STATION 1S Date 1 August 1984 Depth 24 II
Salinity (bottom) 00 ppt Temperature (bottom) 198 C No of samp I es 10
Frequency Density (nom2) occurrence ---------------- shy
Taxa (X) X S D
Nuertea 1 100 859 2715 Nellatolllorpha 1 100 859 2715 Nematoda 248 1000 212933 108288 Turbellaria 4 400 3434 4434 ~untb~la Hli~g Oligochaeta
4 206
400 1000
3434 176872
4434 75309
~~igQYli~dli i[t~(gi~ ~QtQpound l binQ~ybt2 sp ~2l~bi Q[i ~2tlgtQ(ila tirisect sectpoundQtel poundl9lla Chironomid larvae
10 1
20 205
1 574
9
500 100 800
1000 100
1000 400
8586 859
17172 176013
859 492836
7727
10709 271 5
14021 48104
271 5 150531
13696
Mean number of organismssample 1284 Standard deviation 290
M b f I 2ean nurn er 0 organIsms III 1102442 Standard deviation 2488B5
H= 211 SD= 071 SR= 1 16 J= 057
A-35
STATION 58 Date 1 August 1984 Depth 55 m Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samp 1es 10
Frequency Densi ty _ ltnom2 ) Total occurrence
Taxa number (7) X SD
Nemertea 1 100 859 2715 Nematoda 22 900 18889 15036 Turbellaria 1 100 859 2715 Oligochaeta 19 700 16313 17385 biiQQgl~QhY~ YiCg~~ 2 200 171 7 3620 ~Q[~i~~l~ m2nil~n2i2 ~Q[QehiYm ~lmQni2
4 164
300 1000
3434 140810
6003 103048
Heleidae larvae 8 500 6869 8868
Mean number of organismssample 221 Standard deviation 111
I 2Mean num ber 0 f organIsms m 189751 Standard deviation 95391
H = L 37 SD= 043 SR= 090 J= 046
A-36
STATION 55 Date 1 August 1984 Depth 15 m Salinity (bottoll) 01 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (i ) X SD
Nemertea 1 100 859 2715 Neutoda 122 1000 104749 7394B Turbellaria 4 300 3434 6003 ~~~~~nt~ secte~poundQa~ Oligochaeta
1 118
100 1000
859 101315
2715 61223
~giQgY~k~~l iot~[m~Qi btbQg~2b~ Y[O ~grQipound~ ~nl~ni b~ngpound~tb~[ Spa
3 1 5 1
200 100 500 100
2576 859
4293 859
5795 2715 4525 2715
~Q[QebiYm ~mQoi sect~QttQ~ ~OQOi Heleidae larvae
42 2 2
800 200 100
36061 171 7 171 7
21341 3620 5430
Chironomid larvae 4 400 3434 4434
Mean number of organismssapIe 306 Standard deviation 169
M b f I 2ean nurn er 0 organIsms m 262732 Standard deviation 145101
H = 198 SD= 067 SR= 1 45 J= 054
A-37
~-- --------------~~-------------
STATION 45 Date 17 August 1984 Depth 61 1
Salinity (bottom) 10 ppt Temperature (bottom) 210 C No of samp 1es 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nematoda 240 1000 206064 130213 ~~h~sect limQ tjQ~~Hi~ fQ[i~~ Oligochaeta
31 2
245
400 100
1000
26617 1717
210357
75228 5430
121374 babgglYQbl~ Yi[~sect 1 100 859 2715 Ostracoda 1 100 859 271 5 biQ~xtb~[ Spa ~~Q~~isect ~[pound~Qisect ~Qgebi HQOi
333 2
143
1000 200
1000
28591 4 171 7
1227BO
106553 3620
106860 sectpoundQUg~ poundg~nsectisect 1738 1000 1492247 68441 7
Mean number of organismssample 2736 Standard deviation 944
M b f I 2ean num er 0 organlslls m 2349130 Standard deviation 810600
H= 172 SD= 056 SR= 079 J= 052
A-38
STATION 18 Date 17 August 1984 Depth 27 III
Sal i ni ty (botto) 01 ppt Temperature (bottom) 214 C No of samples 10
Frequency Density (nom 2 ) occurrence
Taxa (X) X SD
Nematoda 186 1000 159700 62468 ~tgt SPa 2 100 171 7 5430 Turbellaria 8 400 6869 8868 ~~ntbg2 imnipoundQ 12 700 10303 11304 Oligochaeta 283 1000 242984 90509 ~~iQQY~~Y~lls inlgtmggisBivalvia
4 1
400 100
3434 859
4434 271 5
~Qt~i~Y nilnsectisectbimnQpoundttbg[s SPa ~QtQQbi~ islmQDi2
1 17
286
100 900
1000
859 14596
245560
271 5 10747 83461
sectpoundetteln poundDsggnsectisect Chironomid larvae
526 4
1000 3Q0
451624 3434
179610 6003
Mean number of organismssapIe 1330 Standard deviation 162
Mean nurn ber I 20 f organIsms m 1141938 Standard deviation 139389
H= 214 SD= 073 SR= 1 06 J= 060
A-39
STATION 58 Date 17 August 1984 Depth 55 II
Salinity (bottom) 01 ppt Temperature (bottom) 220 C ND of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (7) x S D
Nematoda 68 1000 58385 27689 Turbellar i a 4 200 3434 8295 Oligochaeta 19 800 16313 13084 ~~i~Q~k~~l~ in~~[m~i bitUQ9Y2bYa Yi[~na Bivalvia
3 3 4
300 300 300
2576 2576 3434
4147 4147 6003
gQ[QipoundYl~ mnilDa 1 100 859 2715 binQpoundY~[ sp gQ[Q2UY a~mgnia sect~Qtgl~n ~n~~ni
2 338
6
100 1000 400
171 7 290207
5152
5430 56636 7240
Mean number of organismssample 448 Standard deviation 72
W b f 2lean num er 0 organlsms II 384653 Standard deviation 61988
H = 1 27 SD= 041 SR= 1 02 J= 038
A-40
STATION 55 Date 17 August 1984 Depth 18 m Salinity (bottom) 00 ppt Temperature (bottol) 223 C No of samples 10
Frequency Density (nom 2 ) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 291 1000 249853 118104 Turbellaria 1 100 859 2715 M~ntb~ mni~Q Oligochaeta
1 47
100 1000
859 40354
2715 28347
~~iQQ~sectkY~ll int~[m~gi bitbQQ1YSDY Yi(gn Bivalvia
25 12
6
900 500 400
21465 10303 5152
1231 0 18459 7240
~Q~2ipoundY mnil~ni Ostracoda
11 8
400 600
9445 6869
12442 6773
bmnQpoundYb~r~ SPa 52 1000 44647 19746 ~QrQsbY lmgnisectsQiielo snQ~ni~ Chironomid larvae
43 5
15
1000 400 BOO
36920 4293
12879
21436 6071 8344
Mean number of organismssample 517 Standard deviation 174
M b f I 2ean num er 0 organlsms m 443896 Standard deviation 149431
W = 228 SD= 065 SR= 1 33 J= 062
A-41
STATION 45 Date 29 August 1984 Depth 55 III
Salinity (bottom) 07 ppt Temperature (bottom) 199 C No of samples 10
Frequency Density (noI 2) Total occurrence
Taxa number (X) X SD
Nematoda 192 1000 164851 98380 ~sntbsect limnipoundQlDligochaeta
2 198
200 1000
171 7 170003
3620 67339
~Q[eipoundYls msniln~isect Ostracoda
1 4
100 400
859 3434
2715 4434
bimnQpoundytb[s Spa gQ[Qeniy sect21QOi~ sectpoundQttQlsO poundsOsggOi
164 87
2468
1000 1000 1000
140810 74698
2119025
39283 39460
840890
Mean number of organismssample 311 6 Standard deviation 101 1
ill b f 2nean nUll er 0 organIsms 2675398 Standard deviation 8682B8
W= 116 SD= 036 SR= 060 J= 039
A-42
STATION 18 Date 29 August 1984 Depth 30 bull Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samples 10
Total Frequency occurrence
Densi ty 2
(nom )
Taxa number (~ ) x S D
Nematoda 150 1000 128790 28905 Turbellaria 7 400 6010 9096 ~nh imni~Qj Oligochaeta ~~i~2Y~k~~1 ini~CIDgii bih2g~Qb~ Yi(~U2 Bivalvi a
B 145
1 1 2
600 1000
100 100 200
6869 124497
859 859
171 7
677 3 84732
271S 2715 3620
~Q[Qi~yli miDllgni bimn2pound~ih~C sp ~QtQehiY imQUia Harpacticoida
7 7
265 1
500 300
1000 100
6010 601 0
227529 859
8145 10747
139462 2715
sect~QtiQDi ~Q~Q~i~ Chironomid larvae
2471 2
1000 200
2121601 171 7
1063112 3620
Mean number of organismssample 3067 Standard deviation 121 9
2Mean number 0 f organIsms m 2633326 standard deviation 1046718
H = 1 09 SD= 034 SR= 1 04 J= 029
A-43
STATION 58 Date 29 August 1984 Depth 55 111
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (noI 2 ) Total occurrence -----------------
Taxa nUllber (X) X SD
Nemertea 4 400 3434 4434 Nuatoda 64 1000 54950 25016 Turbellaria 9 400 7727 11047 ~Hl~b limli~Q19 Oligochaeta
1 37
100 1000
859 31769
2715 19006
i~Qyh il(~~ bHtlQSlheln Yl Bivalvia
4 4
20
200 300 400
3434 3434
17172
8215 6003
26541 ~e(ijY l bQ~dlH sp
26 1
700 100
22324 859
25662 2715
~Q[QQhil iQ sectjgUell HD Heleidae larvae
418 20
1
1000 800 100
358895 17172
859
129443 12799 271 5
Mean number of organismssample 609 Standard deviation 175
nean num b er 0 f organIsms 1 111 2 522887 Standard deviation 150164
H= 176 SD= 051 SR= 1 30 J= 047
A-44
I I
I
I
STATION SS
Date 29 August 1984 Depth 21 1
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (no2) Total occurrence
Taxa nUllber (X) x S D
Nematoda ISO 1000 128790 37969 Turbellaria 1 100 859 271 5 Oligochaeta 48 1000 41213 16088 ~i~g~sect~~l iQ~~mgi bi~QQg~gb~sect ~i~nsect
10 14
600 600
eSB6 12020
9050 14137
Bivalvia 4 200 3434 7240 ~Q[Q~Yl niQaa Ostracoda
15 7
700 SOO
12879 6010
15806 7069
bmQg~~~b~ SPa 14 800 12020 8295 ~g[gaby mgni sect~g~~Qn ~ngnai Chironomid larvae
IB4 25 9
1000 900 700
157982 21465
7727
35563 16810 6335shy
Mean number of organismssample 481 Standard deviation B6
2Mean number 0 f organlsms m 412987 Standard deviation 74131
H= 24S SD= 074 SR= 1 23 J= 068
A-45
STATION 45 Date 14 September 1984 Depth 61 11
Salinity (bottom) 03 ppt Temperature (bottom) IB4 C No of samples 10
---------------------------------~----------------------------------------
Taxa TotalnUlllDer
Frequency occ~~~ence
Density (no 2) -----X-------sect7B
Nematoda 189 1000 162275 85233 t1tQ SPa
Turbellaria 2 2
200 100
171 7 171 7
3620 5430
~~~nIng limoifQl t1QQQDi~ flQriQ Oligochaeta
5 19
142
400 800
1000
4293 1631 3
121921
6071 12442 30504
~QQifYl mDl~D bimoQpoundt1hgr Spa Cumacea
19 184
2
800 1000 200
1631 3 157982
171 7
130B4 69541 3620
~Q[QnniYm ~~lmQDi Harpacticoida
118 1
1000 100
10131 5 B59
43367 2715
sectfQIIQD fOQgO Chironomid larvae
1780 1
1000 100
1528308 859
673586 2715
Mean number of organismssample 2464 Standard deviation 874
M ean num b er f 20 organlsms 2115590 Standard deviation 750305
H= 151 SD= 046 SR= 1 07 J= 041
A-46
STATION 18 Date 14 September 1984 Depth 21 III
Salinity (bottom) 01 ppt Temperature (botto) 182 C No of samples 10
Frequency DenSity (nom 2 ) Total occurrence ---------------- shy
Taxa nUlDber (i) X SD
Nemertea 1 100 859 271 5 Nematoda 186 1000 159700 44925 Turbellaria 16 400 13738 20717 ~~Dth~~ limni~Ql Oligochaeta
13 55
700 900
11162 47223
9096 30085
~Q~ei~Yl nil~Qi~ 17 900 14596 7069 bimDg~lbg[ Spa b 500 5152 6003 ~Q[Q2niY ~lgQi~ Harpacti coi da
562 2
1000 200
482533 171 7
136766 3620
sectpoundQttQ~Q~ ~n~ni 791 1000 679153 324290
Mean number of organismssample 1649 Standard deviation 447
I 211ean nUll ber 0 f organIsms I 1415831 Standard deviation 384136
H= 179 SD= 064 SR= 084 J= 054
A-47
STATION 58 Date 14 September 1984 Depth 58 III
Salinity (bottom) 01 ppt Temperature (bottom) 191 C No of sampl es 10
-------------------------------------------~------------------------------Frequency Density (nom 2 )
Total occurrence Taxa number eX) X SD
Nemertea 1 100 859 2715 Nematoda 55 1000 47223 18658 Turbellaria 10 500 8586 11448
1 100 859 2715 Oligochaeta 41 1000 35203 17850 ~~iQQ~~gll iu1g[m~i ~Q[Q~Yl nilD bimnQ~Y~h[ Spa ~Q[Q~hiYm lmgui sectpoundQilg1D poundU2D Chironomid larvae
4 10
2 277
23 4
100 500 200
1000 700 300
3434 8586 171 7
237832 19748 3434
10861 11448 3620
50561 21051 6003
Mean number of organismssample 428 Standard deviation 51
M b f 2ean num er 0 organIsms III 367481 Standard deviation 43743
H= 179 SD= 055 SR= 114 J= 052
A-48
I I
STATION SS Date 14 September 1984 Depth 21 II
Salinity (bottom) 01 ppt Temperature (bottom) 190 C No of samples 10
--------------------------------------------------------------------~-----
Frequency Density (no1I2) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 102 1000 87577 39200 Oligochaeta 34 700 29192 31142 ~iQ2Y~y1 int(mgi~ bithQgl~en~ Yi(gDsect ~Q(~i~Y m~DilgDsecti~ bimDQamp~1h(sect sp ~2(QQhiY slmQD 2poundQiiQlsD ~sD~g~nsecti Chironomid larvae
36 18 16 17
100 16
3
1000 600 800 700
1000 800 300
30910 15455 13738 14596 85860 13738 2576
157BO 20953 10078 14621 32126 10861 4147
Mean number of organismssample 342 Standard deviation 97
2Mean nUllber 0 f organlsms m 293641 Standard deviation 83617
H= 262 SD= 079 SR= 095 J= 083
A-49
Appendix B--Sediment particle size and organic content of the Cathlamet Bay
benthic invertebrate sites 13 March through 14 September
1984
iii
1
Station 18a 48 54 57
Survey 1 1 1 1
Month March March March March
Day 13 13 13 13
Particle size (mm) Phib Percent by weight
gt 40 -2 000 000 000
20- 40 -1 000 000 000
10- 20 0 000 009 000
05- 10 1 018 1079 032
025- 050 2 545 7583 2468
0125- 025 3 8731 1225 6783
00625-0125 4 491 037 657
lt0625 (5-12) 216 067 060
Organic Content 160 116 128
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
b Phi= -log2(sediment particle diameter in mm)
B-1
Station 18a 48 54 57
Survey 2 2 2 2
Month April April April April
Day 5 5 5 5
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 003 093 000
05shy 10 1 005 31 75 023
025shy 050 2 087 5904 2368
0125- 025 3 6316 750 7155
00625-0125 4 3056 026 427
lt0625 (5-12) 533 052 028
Organic Content 081 077 065
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-2
Station 45 55 58
Survey 3 3 3 3
Month April April April April
Day 18 18 18 18
Particle size (mm)
gt 40
Phi
-2
Percent by weight
000 000 000
20shy 40 -1 000 000 000
10shy 20 0 005 009 004
05shy 10 1 010 027 013
025shy 050 2 015 095 225
0125- 025 3 097 536 6111
00625-0125 4 453 2821 2205
lt0625 (5-12) 9420 6511 1442
Organic Content 31 42 14
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-3
Station 18a 45 55 58
Survey 4 4 4 4
Month May May May May
Day 4 4 4 4
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 021
05shy 10 1 000 065 063
025shy 050 2 012 370 230
0125- 025 3 091 4099 4696
00625-0125 4 322 3650 3052
lt0625 (5-12) 9575 1810 1939
Organic Content 330 180 160
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-4
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
5
May
17
000
000
005
016
217
5862
2729
1170
100
45 55 58
5 5 5
May May May
17 17 17
Percent by weight
000 000
000 000
005 008
113 031
325 274
1903 5613
2784 2401
4870 1672
240 110
000
000
000
010
020
079
397
9494
390
B-5
Station 18al 45 55 58
Survey 6 6 6 6
Month June June June June
Day 6 6 6 6
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 020
05shy 10 1 005 051 027
025shy 050 2 005 301 1 79
0125- 025 3 074 3189 5404
00625-0125 4 599 4118 2885
lt0625 (5-12) 9317 2332 1485
Organic Content 340 240 150
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-6
Station
Survey
Month
Day
Particle size Cmm) Phi
gt 40 -2
20shy 40 -1
10shy 20 a
05shy 10 1
025shy 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
7
June
18
000
000
005
029
138
3917
4143
1768
180
45
7
June
18
55 58
7 7
June June
18 18
Percent by weight
000
000
000
010
020
080
427
9464
310
000 000
000 000
000 007
011 022
057 190
957 5286
3023 2642
5957 1853
1 70 110
B-7
Station 18al 45 55 58
Survey 8 8 8 8
Month July July July July
Day 2 2 2 2
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 006 002 006
05shy 10 1 006 0l3 023
025shy 050 2 017 088 171
0125- 025 3 074 2712 5365
00625-0125 4 552 3892 3081
lt0625 (5-12) 9345 3294 l354
Organic Content 410 210 160
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-8
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
9
July
17
000
000
003
013
130
4294
4434
1127
130
45
9
July
17
Percent
000
000
000
006
012
051
046
9885
290
55
9
July
17
by weight
000
000
019
048
091
628
3616
5597
030
58
9
July
17
000
000
004
022
158
5017
3148
1650
140
B-9
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18al
10
August
1
45
10
August
1
55
10
August
1
58
10
August
1
Percent by weight
000 000
000 004
001 004
009 018
018 088
098 306
049 2510
9824 7070
000
005
045
763
3604
4495
932
156
100 190 060
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-10
Station 18 45 55 58
Survey 11 11 11 11
Month August August August August
Day 17 17 17 17
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000 000
20- 40 -1 005 000 000 000
10- 20 0 021 003 000 210
05- 10 1 064 009 000 159
025- 050 2 226 027 045 2656
0125- 025 3 3259 131 712 3719
00625-0125 4 4327 195 1737 1159
lt0625 (5-12) 2098 9635 7506 2097
Organic Content 210 300 160 100
Ii I
B-11
Station
Survey
Month
Day
Particle size (mm) Phi
gt40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
12
August
29
000
000
012
046
186
3465
4498
17 93
241
45
12
August
29
55 58
12 12
August August
29 29
Percent by weight
000
000
002
009
026
118
189
9656
540
000 000
000 000
003 011
011 028
055 1013
859 5033
1596 1827
7476 2089
1 70 120
B-12
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
_-------------------- shy
B-13
STATION 18 Date 1 June 1984 Depth 30 AI
Salinity (bottom) 00 ppt Temperature (bottom) 134 C No of samples 11
Frequency Density (no 1m2)
Taxa Total number
occurrence (X)
---------------- shyX SD
Turbellaria 14 636 10928 1157 7 ~~~Qltlg~ ilipoundQ~ Oligochaeta
10 178
727 1000
7805 138937
601 6 67913
~~iQQy~tY~l~ ill~[m~Qi~ 122 636 95227 93619 ~Q[Qipound~ l~i~lsectisect Ostracoda
7 1
455 9 1
5464 78 1
6946 2589
billQylhg[ Spa 16 818 12489 10420 GQ[QQQil HQi~ 139 1000 108496 70934 gQ[Qebi secteiifQ[~ sectQiiQi2 ~Q~sectisect Diptera pupae
1 2 1
9 1 182
11 1
781 1561 781
2589 3473 2589
Chironomid larvae 2 182 1561 3473
Mean number of organismssample 714 Standard deviation 284
nean num b er 0 f organlsms m 2 612728 Standard deviation 244249
H= 232 SD= 075 SR= 1 25 J= 063
A-19
STATION 58 Date 1 June 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 138 C No of samples 10
Frequency Density (noI 2 ) Total occurrence
Taxa number (X) X SD
Nematoda 173 1000 148538 47383 Turbellaria 3 300 2576 4147 Oligochaeta 53 1000 45506 32139 ~giQgY2k~g~ ini~[m~Qi~ bQg91YehY2 Yi[~nsect ~Qr~i~Yl m~nl~n~i
26 1
10
600 100 500
22324 859
8586
3391 2 2715
13424 bimnQpound~Q~[ sp ~Q9~m[Y poundgnitYpoundQlysect ~QtQehiYm ~lQni
4 1
46
200 100
1000
3434 859
39496
8295 2715
22243 Chironomid larvae 1 100 859 271 5
Mean number of organismssample 318 standard deviation 103
M b f I 2ean num er 0 organlsms III 273035 Standard deviation 88842
H = 1 99 SD= 065 SR= 1 08 J= 060
A-20
STATION 55 Date 1 June 1984 Depth 27 m Salinity (bottom) 00 ppt Temp era t u r e (b 0 t tom) 140 C No of samples 10
Frequency Density (nom 2 ) Total occurrence
Taxa nueber (X) X SD
Nematoda 157 1000 134800 69524 Turbellaria 9 400 7727 13696 tlHl~lk ~2~~iQH 1 100 859 2715 Oligochaeta 49 1000 42071 32745 ~~iQQysect~gl~ S[l9sect bHbQghQb~~ Yirl~
10 1
400 100
8586 859
12799 2715
tQ[Qpoundls l2lilUsect bilQHSbg[ sp ~QrQQbil nllQisectHarpacticoida
4 7
134 1
400 500
1000 100
3434 6010
115052 859
4434 7069
44742 271 5
sectpoundQUQlls poundsQgn~sect Chironomid larvae
1 1
100 100
859 859
271 5 2715
Hydracarina 1 100 859 2715
Hean number of organismssample 376 Standard deviation 132
M b f 2ean num er 0 organIsms m 322834 Standard deviation 113127
H= 202 SD= 068 SR= 1 40 J= 055
A-21
STATION 45 Date 18 June 1984 Depth 67 m Salinity (bottom) 01 ppt Temperature (bottom) 149 C No of samples 10
Frequency Density (nom2)
Taxa Total nUllber
occurrence ex) i SD
Nematoda 109 1000 93587 3891 7 Turbell ari a 3 200 2576 5795 ~g~tbg limoipoundQl Q~Qni2 fQ(i~2 Oligochaeta ~gigQ~~Y inl[ggi ~Q[QiSY2 moilo Ostracoda
3 2
194 44
7 3
200 200
1000 1000 200 200
2576 171 7
16656B 37778 6010 2576
5795 3620
118364 36020 12831 5795
bimoQampl~n~[2 sp ~Q[QQbiYm lmgoi Harpacticoida sectpoundQQ1202 pound2022Osect Chironomid larvae
68 1 1
113 2
900 100 100
1000 200
58385 859 859
97022 171 7
97627 2715 2715
73976 3620
Mean number of organismssa_pie 550 Standard deviation 371
Mean nUll ber 0 f organIsms 2II 472230 Standard deviation 318519
H= 242 SD= 077 SR= 1 32 Ja 065
A-22
STATION 18 Date 18 June 1984 Depth 34 m Salinity (bottom) 00 ppt Temperature (bottom) 155 C No of samples 10
Frequency Density (nom 2) Total occurrence ----------------shy
Taxa nUlber (Z) X SD
Neutoda 291 1000 249853 138826 Turbellaria 1 100 859 2715 ~~n~~nki~ sectQ~~iQ~2 ~g~ntbg2 limni~Q9 Oligochaeta
1 3
123
100 300
1000
859 2576
105608
271 5 4147
48240 ~~igQY~~~~9 int~(mgii ~Q[~i~~~ mini~ni bimnQ~ylbg(~ Spa
67 6 5
1000 500 400
57526 5152 4293
40485 6003 6071
~Q(QebiYm ~imQnisect Harpacticoida
80 2
1000 200
68688 171 7
41276 3620
sect~QttQini ~2nig~n~i Chironomid larvae
2 4
200 300
171 7 3434
3620 6003
Mean number of organismssample 585 Standard deviation 194
I 2Mean urn b er 0 f organIsms m 502281 Standard deviation 166943
H= 203 SD= 068 SR= 1 20 J= 057
A-23
STATI ON 58 Date 18 June 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (noI 2) Total occurrence
TaKa number (X) X SD
Nellertea 2 100 1717 5430 Nematoda 160 1000 137376 6361 1 Turbellaria 4 400 3434 4434 Oligochaeta 36 1000 3091 0 14705 ~iQQYik~ Q1rQ 4 300 3434 6003 bitnQgl~ebysect YrDsect ~Q[QiY~ ~~nni biQQpoundY1h[ sp ~Q[Qeng ~ilQD Chironomid larvae
3 1 3
61 1
300 100 300
1000 100
2576 859
2576 52375
859
4147 2715 4147
1428 1 2715
Chironollid pupae 1 100 859 271 5
Mean number of organismssample 276 standard deviation 72
nean nurn b er 0 f organIsms I 2 236974 Standard deviation 61410
H = 1 78 SD= 060 SR= 1 23 J= 051
A-24
STATION 55 Date 18 June 1984 Depth 18 m Salinity (bottom)1 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (no 1m2) occurrence
Taxa (X) X SD
Nematoda 160 1000 137376 43967 Turbellaria 1 100 859 271 5 Oligochaeta 61 1000 52375 31985 ~~iQQY~kY~~ int~[mQi~ ~Q[Qipound~l~ m~nini~ biIDnQ~Ylb[s sp
3 3 3
300 300 300
2576 2576 2576
4147 4147 4147
~Q[Q~bi~ ~slIDQni~ Chironomid larvae
85 6
1000 600
72981 5152
34165 4434
Mean number of organismssample 322 Standard deviation 75
2Mean number 0 f organIsms m 276469 Standard deviation 64099
H= 178 5D= 065 SR= 0B4 J= 059
A-25
Frequency Density (no2) occurrence -----------------
Taxa (7) X SD
Nematoda 104 1000 89294 47409 Turbell ar i a 1 100 859 2715 ~~~nQ~sect imni~Q~ tjQQsectQlis flQig~ Oligochaeta
2 1
297
100 100
1000
171 7 859
255004
5430 271 5
146273 ~~i~QYsect~Y~lls ilr2is gQrQi~y~ IDDilDia
24 4
600 300
20606 3434
27212 6003
Ostracoda 2 200 171 7 3620 biDQSy~b~C~ sp M~QYsectisect m~r~~Qi ~QrQeniy QD Harpacticoida
157 1 1 1
900 100 100 100
134800 859 859 859
73197 2715 2715 2715
sectpoundQttQDs SsDQD 113 900 97022 61656
STATION 45 Date 2 July 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) No of samples 10
172 C
Mean number of organismssample 708 Standard deviation 339
M ean num b er f 20 organisms 607889 Standard deviation 290B22
H= 216 SD= 073 SR= 1 27 J= 058
1-26
STATION 18 Date 2 July 1984 Depth 24 WI
Sal inity (bottom) 00 ppt Temperature (bottom) 172 C No of samples 10
--------------------------------~-----------------------------------------Frequency Density (nom2)
Total occurrence Taxa number (7) X SD
Nematoda 202 1000 173437 113532 ~~~nih~sect mnpoundQ~ Oligochleta
4 102
400 1000
3434 87577
4434 54873
~~igQYsect~Y~12 inl~rmgi2 ~Q[~poundYl~ m~ni~nsectisect bimnQpoundylh~[~ Spa
115 4
15
900 300 900
98739 3434
12879
100720 6003 9274
~Q[QQniY~ sect~QDi~ 55 900 47223 40525 Harpacticoida 1 100 859 2715 sectpoundQiiQlD SDg~DEisect Chironomid larvae
2 6
200 400
1717 5152
3620 7240
Hymenoptera 1 100 859 2715 Hydracarina 1 100 859 2715
Mean number of organismssample 508 Standard deviation 253
2Mean num ber 0 f organIsms m 436169 Standard deviation 217580
H= 225 SD= 074 SR= 1 22 J= 063
A-27
STATION 58 Date 2 July 1984 Depth 58 1
Salinity (bottom) 00 ppt Temperature (bottom) IBO C No of samples 10
Frequency Density (no2) Total occurrence
Taxa number ltX) i SD
Nematoda 151 1000 129649 42729 Turbellaria 1 100 859 2715 01 i gochaeta 41 1000 35203 22698 ~~i~e~~~ int~~m~~ 3 200 2576 5795 btbQglYRhY~ Yir~n~ ~e~~ampy mni~niii bimQeamp~tb~ sp ~e~eQhiY ~mQni Chironomid larvae
1 4 2
68 1
100 300 200
1000 100
859 3434 171 7
58385 859
271 5 6003 3620
1557 1 2715
Mean number of organisassample 272 Standard deviation
I 2Mean num ber 0 f organIsms I 233539 Standard deviation 62546
H = 1 69 SD= 061 SR= 099 J= 053
A-28
73
STATION 55 Date 2 July 1984 Depth 15 III
Salinity (bottom) 00 ppt Temperature (bottom) 182 C No of samples 10
Frequency Density (nom2) occurrence
Taxa (X) X SD
Nematoda 184 1()00 157982 5264B Turbellaria 1 100 859 271 5 Oligochaeta ~~iQQ~sect~Y~ll~ n~[~~Qi~ bitnggYQDYsect Yi[~nsect ~QrQipoundM2 m2ni~nsectisect bimnQpoundYn~[2 sp ~QrQQhiM Qni Harpacticoida
91 2 1 B 2
96 2
1000 200 100 500 200
1000 200
78133 171 7 859
6869 171 7
82426 1111
26058 3620 271 5 1890 3620shy
25980 3620
ChirDnomid larvae 5 400 4293 6071 Chironolllid pupae 1 100 859 2715
Mean number of organismssample 393 Standard deviation 53
2t1ean nUllber Df organlsms III 337430 Standard deviatiDn 45080
H= 187 SD= 067 SR= 116 J= 054
A-29
STATION 45 Date 17 Jul y 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (X) X SD
Nematoda 215 1000 184599 45837 ~~n~b~~ imDipoundQ Qe~Qni fllHi2
3 1
300 100
2576 859
4147 2715
Oligochaeta 305 1000 261873 147955 ~~iQQY~k~ in~rm~2i ~Qr~ipoundYl IDniln~i~ Ostracoda
17 1 2
500 100 200
14590 859
171 7
22554 2715 3620
bmnQpound~ihr sp ~QCQQhiY ~lQD~
176 1
1000 100
151114 859
57125 2715
Harpacticoida 4 300 3434 6003 sectQ~~Qn poundnQnai~ Chironomid larvae
91 5
1000 400
78133 4293
61310 6071
Mean number of organismssample 821 Standard deviation 275
M b f 2ean num er 0 organlsms m 70491 1 Standard deviation 236369
H= 215 SD= 073 SR= 114 J= 060
A-30
STATION 18 Date 17 Jul y 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom 203 C No of samples 10
Frequency Density (001 2 Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 339 1000 291065 119140 Turbellaria 3 200 2576 5795 ~~2~b~~ limnipoundQ12Oligochaeta
4 18S
300 1000
3434 161417
6003 89393
~~iQQy~~~ls in~(ID~Qi bim~Qampy~bg(2 Spa
34 16
800 700
29192 1373B
22967 15252
~g(gebi~m ~21mQni2 Harpacticoida
52 3
1000 200
44647 2576
25212 5795
2ampQ11Q1202 ampS02Qg~2i2 Chironomid larvae
18 10
700 700
15455 8586
13904 701 0
Mean number of organi$mssample 667 Standard deviation IBB
H ean nurn b er 1 20 f organIsms m 572686 Standard deviation 161750
H = 1 99 SD= 065 SR= 090 J= 060
A-31
STATION 58 Date 17 July 1984 Depth 55 AI
Salinity (bottom) 00 ppt Temperature (bottom) 197 C No of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nellatoda 173 1000 14853B 66390 Turbellaria 1 100 859 271 5 ~~~n~hu ini~QA Oligochaeta
1 46
100 1000
859 39496
2715 26293
~gipoundQy~~ygl2 in~rJg~i~ b1nQglYRnY~ Yi( Bivalvia
6 2 1
400 200 100
5152 1717 859
8295 3620 271 5
ei~ IDnH~n~i~ 2 200 171 7 3620 Ostracoda 1 100 959 271 5 biIDQHlh~( Spa ~Q(QRbim ~21Qnisect Diptera pupae
1 94
1
100 1000 100
859 80708
859
2715 35332 2715
Heleidae 1arvae 5 500 4293 4525 Chironomid larvae 1 100 859 2715
Mean number of organismssample 335 Standard deviatiDn 113
Mean number of organismsRI2 287631 Standard deviation 97413
H= 1 86 SO= 064 SR= 155 J= 049
A-32
STATION 55 Date 17 July 1984 Depth 18 m Sali nity (bottom) 00 ppt TeAlperature (bottom) 199 C No of samples 10
Frequency Density (nom2 ) occurrence
Taxa (X) x S D
Nematoda 61 1000 52375 33972 Turbellaria 1 100 859 2715 Oligochaeta 24 900 20606 11590 ~~i2QY~k~~1 iOi[2 bimDQ~xlb~r sp ~Q[QQhi~ sectgni~ Chironomid larvae
3 1
38 3
200 100
1000 300
2576 859
32627 2576
5795 2715
19326 4147
Mean number of organismssample 131 standard deviation 54
M b f 2ean num er 0 organIsms 112477 Standard deviation 46757
H= 184 SD= 066 SR= 085 J= 065
bull
A-33
STATION 45 Date 1 August 1984 Depth 58 m Sal i nity (bottoll) 03 ppt Temperature (bottom) 203 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa nUllber (X) X SD
Nematoda 145 1000 124417 52344 Turbellaria 1 100 859 2715 Mmth~sect iHpoundQ~ Q~~Qi ilQ[i9Oligochaeta
5 3
196
500 300
1000
4293 2576
168286
4525 4147
91064 ~igQYsect~~li int9i Ostracoda
2 3
100 300
171 7 2576
5430 4147
bimnQpoundtl sp ~Q[Q2hiY sectlQni~
240 6
1000 600
206064 5152
73526 4434
sectpoundQtQl poundngnai~Helei dae larvae
1862 1
1000 100
1598713 859
966134 271 ~
Mean number of organismssample 2464 Standard deviation 1156
211 ean num ber 0 f organIsms II 2115590 Standard deviation 992518
H= 124 SD= 041 SR= 089 J= 036
A-34
STATION 1S Date 1 August 1984 Depth 24 II
Salinity (bottom) 00 ppt Temperature (bottom) 198 C No of samp I es 10
Frequency Density (nom2) occurrence ---------------- shy
Taxa (X) X S D
Nuertea 1 100 859 2715 Nellatolllorpha 1 100 859 2715 Nematoda 248 1000 212933 108288 Turbellaria 4 400 3434 4434 ~untb~la Hli~g Oligochaeta
4 206
400 1000
3434 176872
4434 75309
~~igQYli~dli i[t~(gi~ ~QtQpound l binQ~ybt2 sp ~2l~bi Q[i ~2tlgtQ(ila tirisect sectpoundQtel poundl9lla Chironomid larvae
10 1
20 205
1 574
9
500 100 800
1000 100
1000 400
8586 859
17172 176013
859 492836
7727
10709 271 5
14021 48104
271 5 150531
13696
Mean number of organismssample 1284 Standard deviation 290
M b f I 2ean nurn er 0 organIsms III 1102442 Standard deviation 2488B5
H= 211 SD= 071 SR= 1 16 J= 057
A-35
STATION 58 Date 1 August 1984 Depth 55 m Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samp 1es 10
Frequency Densi ty _ ltnom2 ) Total occurrence
Taxa number (7) X SD
Nemertea 1 100 859 2715 Nematoda 22 900 18889 15036 Turbellaria 1 100 859 2715 Oligochaeta 19 700 16313 17385 biiQQgl~QhY~ YiCg~~ 2 200 171 7 3620 ~Q[~i~~l~ m2nil~n2i2 ~Q[QehiYm ~lmQni2
4 164
300 1000
3434 140810
6003 103048
Heleidae larvae 8 500 6869 8868
Mean number of organismssample 221 Standard deviation 111
I 2Mean num ber 0 f organIsms m 189751 Standard deviation 95391
H = L 37 SD= 043 SR= 090 J= 046
A-36
STATION 55 Date 1 August 1984 Depth 15 m Salinity (bottoll) 01 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (i ) X SD
Nemertea 1 100 859 2715 Neutoda 122 1000 104749 7394B Turbellaria 4 300 3434 6003 ~~~~~nt~ secte~poundQa~ Oligochaeta
1 118
100 1000
859 101315
2715 61223
~giQgY~k~~l iot~[m~Qi btbQg~2b~ Y[O ~grQipound~ ~nl~ni b~ngpound~tb~[ Spa
3 1 5 1
200 100 500 100
2576 859
4293 859
5795 2715 4525 2715
~Q[QebiYm ~mQoi sect~QttQ~ ~OQOi Heleidae larvae
42 2 2
800 200 100
36061 171 7 171 7
21341 3620 5430
Chironomid larvae 4 400 3434 4434
Mean number of organismssapIe 306 Standard deviation 169
M b f I 2ean nurn er 0 organIsms m 262732 Standard deviation 145101
H = 198 SD= 067 SR= 1 45 J= 054
A-37
~-- --------------~~-------------
STATION 45 Date 17 August 1984 Depth 61 1
Salinity (bottom) 10 ppt Temperature (bottom) 210 C No of samp 1es 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nematoda 240 1000 206064 130213 ~~h~sect limQ tjQ~~Hi~ fQ[i~~ Oligochaeta
31 2
245
400 100
1000
26617 1717
210357
75228 5430
121374 babgglYQbl~ Yi[~sect 1 100 859 2715 Ostracoda 1 100 859 271 5 biQ~xtb~[ Spa ~~Q~~isect ~[pound~Qisect ~Qgebi HQOi
333 2
143
1000 200
1000
28591 4 171 7
1227BO
106553 3620
106860 sectpoundQUg~ poundg~nsectisect 1738 1000 1492247 68441 7
Mean number of organismssample 2736 Standard deviation 944
M b f I 2ean num er 0 organlslls m 2349130 Standard deviation 810600
H= 172 SD= 056 SR= 079 J= 052
A-38
STATION 18 Date 17 August 1984 Depth 27 III
Sal i ni ty (botto) 01 ppt Temperature (bottom) 214 C No of samples 10
Frequency Density (nom 2 ) occurrence
Taxa (X) X SD
Nematoda 186 1000 159700 62468 ~tgt SPa 2 100 171 7 5430 Turbellaria 8 400 6869 8868 ~~ntbg2 imnipoundQ 12 700 10303 11304 Oligochaeta 283 1000 242984 90509 ~~iQQY~~Y~lls inlgtmggisBivalvia
4 1
400 100
3434 859
4434 271 5
~Qt~i~Y nilnsectisectbimnQpoundttbg[s SPa ~QtQQbi~ islmQDi2
1 17
286
100 900
1000
859 14596
245560
271 5 10747 83461
sectpoundetteln poundDsggnsectisect Chironomid larvae
526 4
1000 3Q0
451624 3434
179610 6003
Mean number of organismssapIe 1330 Standard deviation 162
Mean nurn ber I 20 f organIsms m 1141938 Standard deviation 139389
H= 214 SD= 073 SR= 1 06 J= 060
A-39
STATION 58 Date 17 August 1984 Depth 55 II
Salinity (bottom) 01 ppt Temperature (bottom) 220 C ND of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (7) x S D
Nematoda 68 1000 58385 27689 Turbellar i a 4 200 3434 8295 Oligochaeta 19 800 16313 13084 ~~i~Q~k~~l~ in~~[m~i bitUQ9Y2bYa Yi[~na Bivalvia
3 3 4
300 300 300
2576 2576 3434
4147 4147 6003
gQ[QipoundYl~ mnilDa 1 100 859 2715 binQpoundY~[ sp gQ[Q2UY a~mgnia sect~Qtgl~n ~n~~ni
2 338
6
100 1000 400
171 7 290207
5152
5430 56636 7240
Mean number of organismssample 448 Standard deviation 72
W b f 2lean num er 0 organlsms II 384653 Standard deviation 61988
H = 1 27 SD= 041 SR= 1 02 J= 038
A-40
STATION 55 Date 17 August 1984 Depth 18 m Salinity (bottom) 00 ppt Temperature (bottol) 223 C No of samples 10
Frequency Density (nom 2 ) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 291 1000 249853 118104 Turbellaria 1 100 859 2715 M~ntb~ mni~Q Oligochaeta
1 47
100 1000
859 40354
2715 28347
~~iQQ~sectkY~ll int~[m~gi bitbQQ1YSDY Yi(gn Bivalvia
25 12
6
900 500 400
21465 10303 5152
1231 0 18459 7240
~Q~2ipoundY mnil~ni Ostracoda
11 8
400 600
9445 6869
12442 6773
bmnQpoundYb~r~ SPa 52 1000 44647 19746 ~QrQsbY lmgnisectsQiielo snQ~ni~ Chironomid larvae
43 5
15
1000 400 BOO
36920 4293
12879
21436 6071 8344
Mean number of organismssample 517 Standard deviation 174
M b f I 2ean num er 0 organlsms m 443896 Standard deviation 149431
W = 228 SD= 065 SR= 1 33 J= 062
A-41
STATION 45 Date 29 August 1984 Depth 55 III
Salinity (bottom) 07 ppt Temperature (bottom) 199 C No of samples 10
Frequency Density (noI 2) Total occurrence
Taxa number (X) X SD
Nematoda 192 1000 164851 98380 ~sntbsect limnipoundQlDligochaeta
2 198
200 1000
171 7 170003
3620 67339
~Q[eipoundYls msniln~isect Ostracoda
1 4
100 400
859 3434
2715 4434
bimnQpoundytb[s Spa gQ[Qeniy sect21QOi~ sectpoundQttQlsO poundsOsggOi
164 87
2468
1000 1000 1000
140810 74698
2119025
39283 39460
840890
Mean number of organismssample 311 6 Standard deviation 101 1
ill b f 2nean nUll er 0 organIsms 2675398 Standard deviation 8682B8
W= 116 SD= 036 SR= 060 J= 039
A-42
STATION 18 Date 29 August 1984 Depth 30 bull Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samples 10
Total Frequency occurrence
Densi ty 2
(nom )
Taxa number (~ ) x S D
Nematoda 150 1000 128790 28905 Turbellaria 7 400 6010 9096 ~nh imni~Qj Oligochaeta ~~i~2Y~k~~1 ini~CIDgii bih2g~Qb~ Yi(~U2 Bivalvi a
B 145
1 1 2
600 1000
100 100 200
6869 124497
859 859
171 7
677 3 84732
271S 2715 3620
~Q[Qi~yli miDllgni bimn2pound~ih~C sp ~QtQehiY imQUia Harpacticoida
7 7
265 1
500 300
1000 100
6010 601 0
227529 859
8145 10747
139462 2715
sect~QtiQDi ~Q~Q~i~ Chironomid larvae
2471 2
1000 200
2121601 171 7
1063112 3620
Mean number of organismssample 3067 Standard deviation 121 9
2Mean number 0 f organIsms m 2633326 standard deviation 1046718
H = 1 09 SD= 034 SR= 1 04 J= 029
A-43
STATION 58 Date 29 August 1984 Depth 55 111
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (noI 2 ) Total occurrence -----------------
Taxa nUllber (X) X SD
Nemertea 4 400 3434 4434 Nuatoda 64 1000 54950 25016 Turbellaria 9 400 7727 11047 ~Hl~b limli~Q19 Oligochaeta
1 37
100 1000
859 31769
2715 19006
i~Qyh il(~~ bHtlQSlheln Yl Bivalvia
4 4
20
200 300 400
3434 3434
17172
8215 6003
26541 ~e(ijY l bQ~dlH sp
26 1
700 100
22324 859
25662 2715
~Q[QQhil iQ sectjgUell HD Heleidae larvae
418 20
1
1000 800 100
358895 17172
859
129443 12799 271 5
Mean number of organismssample 609 Standard deviation 175
nean num b er 0 f organIsms 1 111 2 522887 Standard deviation 150164
H= 176 SD= 051 SR= 1 30 J= 047
A-44
I I
I
I
STATION SS
Date 29 August 1984 Depth 21 1
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (no2) Total occurrence
Taxa nUllber (X) x S D
Nematoda ISO 1000 128790 37969 Turbellaria 1 100 859 271 5 Oligochaeta 48 1000 41213 16088 ~i~g~sect~~l iQ~~mgi bi~QQg~gb~sect ~i~nsect
10 14
600 600
eSB6 12020
9050 14137
Bivalvia 4 200 3434 7240 ~Q[Q~Yl niQaa Ostracoda
15 7
700 SOO
12879 6010
15806 7069
bmQg~~~b~ SPa 14 800 12020 8295 ~g[gaby mgni sect~g~~Qn ~ngnai Chironomid larvae
IB4 25 9
1000 900 700
157982 21465
7727
35563 16810 6335shy
Mean number of organismssample 481 Standard deviation B6
2Mean number 0 f organlsms m 412987 Standard deviation 74131
H= 24S SD= 074 SR= 1 23 J= 068
A-45
STATION 45 Date 14 September 1984 Depth 61 11
Salinity (bottom) 03 ppt Temperature (bottom) IB4 C No of samples 10
---------------------------------~----------------------------------------
Taxa TotalnUlllDer
Frequency occ~~~ence
Density (no 2) -----X-------sect7B
Nematoda 189 1000 162275 85233 t1tQ SPa
Turbellaria 2 2
200 100
171 7 171 7
3620 5430
~~~nIng limoifQl t1QQQDi~ flQriQ Oligochaeta
5 19
142
400 800
1000
4293 1631 3
121921
6071 12442 30504
~QQifYl mDl~D bimoQpoundt1hgr Spa Cumacea
19 184
2
800 1000 200
1631 3 157982
171 7
130B4 69541 3620
~Q[QnniYm ~~lmQDi Harpacticoida
118 1
1000 100
10131 5 B59
43367 2715
sectfQIIQD fOQgO Chironomid larvae
1780 1
1000 100
1528308 859
673586 2715
Mean number of organismssample 2464 Standard deviation 874
M ean num b er f 20 organlsms 2115590 Standard deviation 750305
H= 151 SD= 046 SR= 1 07 J= 041
A-46
STATION 18 Date 14 September 1984 Depth 21 III
Salinity (bottom) 01 ppt Temperature (botto) 182 C No of samples 10
Frequency DenSity (nom 2 ) Total occurrence ---------------- shy
Taxa nUlDber (i) X SD
Nemertea 1 100 859 271 5 Nematoda 186 1000 159700 44925 Turbellaria 16 400 13738 20717 ~~Dth~~ limni~Ql Oligochaeta
13 55
700 900
11162 47223
9096 30085
~Q~ei~Yl nil~Qi~ 17 900 14596 7069 bimDg~lbg[ Spa b 500 5152 6003 ~Q[Q2niY ~lgQi~ Harpacti coi da
562 2
1000 200
482533 171 7
136766 3620
sectpoundQttQ~Q~ ~n~ni 791 1000 679153 324290
Mean number of organismssample 1649 Standard deviation 447
I 211ean nUll ber 0 f organIsms I 1415831 Standard deviation 384136
H= 179 SD= 064 SR= 084 J= 054
A-47
STATION 58 Date 14 September 1984 Depth 58 III
Salinity (bottom) 01 ppt Temperature (bottom) 191 C No of sampl es 10
-------------------------------------------~------------------------------Frequency Density (nom 2 )
Total occurrence Taxa number eX) X SD
Nemertea 1 100 859 2715 Nematoda 55 1000 47223 18658 Turbellaria 10 500 8586 11448
1 100 859 2715 Oligochaeta 41 1000 35203 17850 ~~iQQ~~gll iu1g[m~i ~Q[Q~Yl nilD bimnQ~Y~h[ Spa ~Q[Q~hiYm lmgui sectpoundQilg1D poundU2D Chironomid larvae
4 10
2 277
23 4
100 500 200
1000 700 300
3434 8586 171 7
237832 19748 3434
10861 11448 3620
50561 21051 6003
Mean number of organismssample 428 Standard deviation 51
M b f 2ean num er 0 organIsms III 367481 Standard deviation 43743
H= 179 SD= 055 SR= 114 J= 052
A-48
I I
STATION SS Date 14 September 1984 Depth 21 II
Salinity (bottom) 01 ppt Temperature (bottom) 190 C No of samples 10
--------------------------------------------------------------------~-----
Frequency Density (no1I2) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 102 1000 87577 39200 Oligochaeta 34 700 29192 31142 ~iQ2Y~y1 int(mgi~ bithQgl~en~ Yi(gDsect ~Q(~i~Y m~DilgDsecti~ bimDQamp~1h(sect sp ~2(QQhiY slmQD 2poundQiiQlsD ~sD~g~nsecti Chironomid larvae
36 18 16 17
100 16
3
1000 600 800 700
1000 800 300
30910 15455 13738 14596 85860 13738 2576
157BO 20953 10078 14621 32126 10861 4147
Mean number of organismssample 342 Standard deviation 97
2Mean nUllber 0 f organlsms m 293641 Standard deviation 83617
H= 262 SD= 079 SR= 095 J= 083
A-49
Appendix B--Sediment particle size and organic content of the Cathlamet Bay
benthic invertebrate sites 13 March through 14 September
1984
iii
1
Station 18a 48 54 57
Survey 1 1 1 1
Month March March March March
Day 13 13 13 13
Particle size (mm) Phib Percent by weight
gt 40 -2 000 000 000
20- 40 -1 000 000 000
10- 20 0 000 009 000
05- 10 1 018 1079 032
025- 050 2 545 7583 2468
0125- 025 3 8731 1225 6783
00625-0125 4 491 037 657
lt0625 (5-12) 216 067 060
Organic Content 160 116 128
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
b Phi= -log2(sediment particle diameter in mm)
B-1
Station 18a 48 54 57
Survey 2 2 2 2
Month April April April April
Day 5 5 5 5
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 003 093 000
05shy 10 1 005 31 75 023
025shy 050 2 087 5904 2368
0125- 025 3 6316 750 7155
00625-0125 4 3056 026 427
lt0625 (5-12) 533 052 028
Organic Content 081 077 065
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-2
Station 45 55 58
Survey 3 3 3 3
Month April April April April
Day 18 18 18 18
Particle size (mm)
gt 40
Phi
-2
Percent by weight
000 000 000
20shy 40 -1 000 000 000
10shy 20 0 005 009 004
05shy 10 1 010 027 013
025shy 050 2 015 095 225
0125- 025 3 097 536 6111
00625-0125 4 453 2821 2205
lt0625 (5-12) 9420 6511 1442
Organic Content 31 42 14
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-3
Station 18a 45 55 58
Survey 4 4 4 4
Month May May May May
Day 4 4 4 4
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 021
05shy 10 1 000 065 063
025shy 050 2 012 370 230
0125- 025 3 091 4099 4696
00625-0125 4 322 3650 3052
lt0625 (5-12) 9575 1810 1939
Organic Content 330 180 160
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-4
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
5
May
17
000
000
005
016
217
5862
2729
1170
100
45 55 58
5 5 5
May May May
17 17 17
Percent by weight
000 000
000 000
005 008
113 031
325 274
1903 5613
2784 2401
4870 1672
240 110
000
000
000
010
020
079
397
9494
390
B-5
Station 18al 45 55 58
Survey 6 6 6 6
Month June June June June
Day 6 6 6 6
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 020
05shy 10 1 005 051 027
025shy 050 2 005 301 1 79
0125- 025 3 074 3189 5404
00625-0125 4 599 4118 2885
lt0625 (5-12) 9317 2332 1485
Organic Content 340 240 150
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-6
Station
Survey
Month
Day
Particle size Cmm) Phi
gt 40 -2
20shy 40 -1
10shy 20 a
05shy 10 1
025shy 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
7
June
18
000
000
005
029
138
3917
4143
1768
180
45
7
June
18
55 58
7 7
June June
18 18
Percent by weight
000
000
000
010
020
080
427
9464
310
000 000
000 000
000 007
011 022
057 190
957 5286
3023 2642
5957 1853
1 70 110
B-7
Station 18al 45 55 58
Survey 8 8 8 8
Month July July July July
Day 2 2 2 2
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 006 002 006
05shy 10 1 006 0l3 023
025shy 050 2 017 088 171
0125- 025 3 074 2712 5365
00625-0125 4 552 3892 3081
lt0625 (5-12) 9345 3294 l354
Organic Content 410 210 160
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-8
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
9
July
17
000
000
003
013
130
4294
4434
1127
130
45
9
July
17
Percent
000
000
000
006
012
051
046
9885
290
55
9
July
17
by weight
000
000
019
048
091
628
3616
5597
030
58
9
July
17
000
000
004
022
158
5017
3148
1650
140
B-9
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18al
10
August
1
45
10
August
1
55
10
August
1
58
10
August
1
Percent by weight
000 000
000 004
001 004
009 018
018 088
098 306
049 2510
9824 7070
000
005
045
763
3604
4495
932
156
100 190 060
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-10
Station 18 45 55 58
Survey 11 11 11 11
Month August August August August
Day 17 17 17 17
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000 000
20- 40 -1 005 000 000 000
10- 20 0 021 003 000 210
05- 10 1 064 009 000 159
025- 050 2 226 027 045 2656
0125- 025 3 3259 131 712 3719
00625-0125 4 4327 195 1737 1159
lt0625 (5-12) 2098 9635 7506 2097
Organic Content 210 300 160 100
Ii I
B-11
Station
Survey
Month
Day
Particle size (mm) Phi
gt40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
12
August
29
000
000
012
046
186
3465
4498
17 93
241
45
12
August
29
55 58
12 12
August August
29 29
Percent by weight
000
000
002
009
026
118
189
9656
540
000 000
000 000
003 011
011 028
055 1013
859 5033
1596 1827
7476 2089
1 70 120
B-12
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
_-------------------- shy
B-13
STATION 58 Date 1 June 1984 Depth 61 m Salinity (bottom) 00 ppt Temperature (bottom) 138 C No of samples 10
Frequency Density (noI 2 ) Total occurrence
Taxa number (X) X SD
Nematoda 173 1000 148538 47383 Turbellaria 3 300 2576 4147 Oligochaeta 53 1000 45506 32139 ~giQgY2k~g~ ini~[m~Qi~ bQg91YehY2 Yi[~nsect ~Qr~i~Yl m~nl~n~i
26 1
10
600 100 500
22324 859
8586
3391 2 2715
13424 bimnQpound~Q~[ sp ~Q9~m[Y poundgnitYpoundQlysect ~QtQehiYm ~lQni
4 1
46
200 100
1000
3434 859
39496
8295 2715
22243 Chironomid larvae 1 100 859 271 5
Mean number of organismssample 318 standard deviation 103
M b f I 2ean num er 0 organlsms III 273035 Standard deviation 88842
H = 1 99 SD= 065 SR= 1 08 J= 060
A-20
STATION 55 Date 1 June 1984 Depth 27 m Salinity (bottom) 00 ppt Temp era t u r e (b 0 t tom) 140 C No of samples 10
Frequency Density (nom 2 ) Total occurrence
Taxa nueber (X) X SD
Nematoda 157 1000 134800 69524 Turbellaria 9 400 7727 13696 tlHl~lk ~2~~iQH 1 100 859 2715 Oligochaeta 49 1000 42071 32745 ~~iQQysect~gl~ S[l9sect bHbQghQb~~ Yirl~
10 1
400 100
8586 859
12799 2715
tQ[Qpoundls l2lilUsect bilQHSbg[ sp ~QrQQbil nllQisectHarpacticoida
4 7
134 1
400 500
1000 100
3434 6010
115052 859
4434 7069
44742 271 5
sectpoundQUQlls poundsQgn~sect Chironomid larvae
1 1
100 100
859 859
271 5 2715
Hydracarina 1 100 859 2715
Hean number of organismssample 376 Standard deviation 132
M b f 2ean num er 0 organIsms m 322834 Standard deviation 113127
H= 202 SD= 068 SR= 1 40 J= 055
A-21
STATION 45 Date 18 June 1984 Depth 67 m Salinity (bottom) 01 ppt Temperature (bottom) 149 C No of samples 10
Frequency Density (nom2)
Taxa Total nUllber
occurrence ex) i SD
Nematoda 109 1000 93587 3891 7 Turbell ari a 3 200 2576 5795 ~g~tbg limoipoundQl Q~Qni2 fQ(i~2 Oligochaeta ~gigQ~~Y inl[ggi ~Q[QiSY2 moilo Ostracoda
3 2
194 44
7 3
200 200
1000 1000 200 200
2576 171 7
16656B 37778 6010 2576
5795 3620
118364 36020 12831 5795
bimoQampl~n~[2 sp ~Q[QQbiYm lmgoi Harpacticoida sectpoundQQ1202 pound2022Osect Chironomid larvae
68 1 1
113 2
900 100 100
1000 200
58385 859 859
97022 171 7
97627 2715 2715
73976 3620
Mean number of organismssa_pie 550 Standard deviation 371
Mean nUll ber 0 f organIsms 2II 472230 Standard deviation 318519
H= 242 SD= 077 SR= 1 32 Ja 065
A-22
STATION 18 Date 18 June 1984 Depth 34 m Salinity (bottom) 00 ppt Temperature (bottom) 155 C No of samples 10
Frequency Density (nom 2) Total occurrence ----------------shy
Taxa nUlber (Z) X SD
Neutoda 291 1000 249853 138826 Turbellaria 1 100 859 2715 ~~n~~nki~ sectQ~~iQ~2 ~g~ntbg2 limni~Q9 Oligochaeta
1 3
123
100 300
1000
859 2576
105608
271 5 4147
48240 ~~igQY~~~~9 int~(mgii ~Q[~i~~~ mini~ni bimnQ~ylbg(~ Spa
67 6 5
1000 500 400
57526 5152 4293
40485 6003 6071
~Q(QebiYm ~imQnisect Harpacticoida
80 2
1000 200
68688 171 7
41276 3620
sect~QttQini ~2nig~n~i Chironomid larvae
2 4
200 300
171 7 3434
3620 6003
Mean number of organismssample 585 Standard deviation 194
I 2Mean urn b er 0 f organIsms m 502281 Standard deviation 166943
H= 203 SD= 068 SR= 1 20 J= 057
A-23
STATI ON 58 Date 18 June 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (noI 2) Total occurrence
TaKa number (X) X SD
Nellertea 2 100 1717 5430 Nematoda 160 1000 137376 6361 1 Turbellaria 4 400 3434 4434 Oligochaeta 36 1000 3091 0 14705 ~iQQYik~ Q1rQ 4 300 3434 6003 bitnQgl~ebysect YrDsect ~Q[QiY~ ~~nni biQQpoundY1h[ sp ~Q[Qeng ~ilQD Chironomid larvae
3 1 3
61 1
300 100 300
1000 100
2576 859
2576 52375
859
4147 2715 4147
1428 1 2715
Chironollid pupae 1 100 859 271 5
Mean number of organismssample 276 standard deviation 72
nean nurn b er 0 f organIsms I 2 236974 Standard deviation 61410
H = 1 78 SD= 060 SR= 1 23 J= 051
A-24
STATION 55 Date 18 June 1984 Depth 18 m Salinity (bottom)1 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (no 1m2) occurrence
Taxa (X) X SD
Nematoda 160 1000 137376 43967 Turbellaria 1 100 859 271 5 Oligochaeta 61 1000 52375 31985 ~~iQQY~kY~~ int~[mQi~ ~Q[Qipound~l~ m~nini~ biIDnQ~Ylb[s sp
3 3 3
300 300 300
2576 2576 2576
4147 4147 4147
~Q[Q~bi~ ~slIDQni~ Chironomid larvae
85 6
1000 600
72981 5152
34165 4434
Mean number of organismssample 322 Standard deviation 75
2Mean number 0 f organIsms m 276469 Standard deviation 64099
H= 178 5D= 065 SR= 0B4 J= 059
A-25
Frequency Density (no2) occurrence -----------------
Taxa (7) X SD
Nematoda 104 1000 89294 47409 Turbell ar i a 1 100 859 2715 ~~~nQ~sect imni~Q~ tjQQsectQlis flQig~ Oligochaeta
2 1
297
100 100
1000
171 7 859
255004
5430 271 5
146273 ~~i~QYsect~Y~lls ilr2is gQrQi~y~ IDDilDia
24 4
600 300
20606 3434
27212 6003
Ostracoda 2 200 171 7 3620 biDQSy~b~C~ sp M~QYsectisect m~r~~Qi ~QrQeniy QD Harpacticoida
157 1 1 1
900 100 100 100
134800 859 859 859
73197 2715 2715 2715
sectpoundQttQDs SsDQD 113 900 97022 61656
STATION 45 Date 2 July 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) No of samples 10
172 C
Mean number of organismssample 708 Standard deviation 339
M ean num b er f 20 organisms 607889 Standard deviation 290B22
H= 216 SD= 073 SR= 1 27 J= 058
1-26
STATION 18 Date 2 July 1984 Depth 24 WI
Sal inity (bottom) 00 ppt Temperature (bottom) 172 C No of samples 10
--------------------------------~-----------------------------------------Frequency Density (nom2)
Total occurrence Taxa number (7) X SD
Nematoda 202 1000 173437 113532 ~~~nih~sect mnpoundQ~ Oligochleta
4 102
400 1000
3434 87577
4434 54873
~~igQYsect~Y~12 inl~rmgi2 ~Q[~poundYl~ m~ni~nsectisect bimnQpoundylh~[~ Spa
115 4
15
900 300 900
98739 3434
12879
100720 6003 9274
~Q[QQniY~ sect~QDi~ 55 900 47223 40525 Harpacticoida 1 100 859 2715 sectpoundQiiQlD SDg~DEisect Chironomid larvae
2 6
200 400
1717 5152
3620 7240
Hymenoptera 1 100 859 2715 Hydracarina 1 100 859 2715
Mean number of organismssample 508 Standard deviation 253
2Mean num ber 0 f organIsms m 436169 Standard deviation 217580
H= 225 SD= 074 SR= 1 22 J= 063
A-27
STATION 58 Date 2 July 1984 Depth 58 1
Salinity (bottom) 00 ppt Temperature (bottom) IBO C No of samples 10
Frequency Density (no2) Total occurrence
Taxa number ltX) i SD
Nematoda 151 1000 129649 42729 Turbellaria 1 100 859 2715 01 i gochaeta 41 1000 35203 22698 ~~i~e~~~ int~~m~~ 3 200 2576 5795 btbQglYRhY~ Yir~n~ ~e~~ampy mni~niii bimQeamp~tb~ sp ~e~eQhiY ~mQni Chironomid larvae
1 4 2
68 1
100 300 200
1000 100
859 3434 171 7
58385 859
271 5 6003 3620
1557 1 2715
Mean number of organisassample 272 Standard deviation
I 2Mean num ber 0 f organIsms I 233539 Standard deviation 62546
H = 1 69 SD= 061 SR= 099 J= 053
A-28
73
STATION 55 Date 2 July 1984 Depth 15 III
Salinity (bottom) 00 ppt Temperature (bottom) 182 C No of samples 10
Frequency Density (nom2) occurrence
Taxa (X) X SD
Nematoda 184 1()00 157982 5264B Turbellaria 1 100 859 271 5 Oligochaeta ~~iQQ~sect~Y~ll~ n~[~~Qi~ bitnggYQDYsect Yi[~nsect ~QrQipoundM2 m2ni~nsectisect bimnQpoundYn~[2 sp ~QrQQhiM Qni Harpacticoida
91 2 1 B 2
96 2
1000 200 100 500 200
1000 200
78133 171 7 859
6869 171 7
82426 1111
26058 3620 271 5 1890 3620shy
25980 3620
ChirDnomid larvae 5 400 4293 6071 Chironolllid pupae 1 100 859 2715
Mean number of organismssample 393 Standard deviation 53
2t1ean nUllber Df organlsms III 337430 Standard deviatiDn 45080
H= 187 SD= 067 SR= 116 J= 054
A-29
STATION 45 Date 17 Jul y 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (X) X SD
Nematoda 215 1000 184599 45837 ~~n~b~~ imDipoundQ Qe~Qni fllHi2
3 1
300 100
2576 859
4147 2715
Oligochaeta 305 1000 261873 147955 ~~iQQY~k~ in~rm~2i ~Qr~ipoundYl IDniln~i~ Ostracoda
17 1 2
500 100 200
14590 859
171 7
22554 2715 3620
bmnQpound~ihr sp ~QCQQhiY ~lQD~
176 1
1000 100
151114 859
57125 2715
Harpacticoida 4 300 3434 6003 sectQ~~Qn poundnQnai~ Chironomid larvae
91 5
1000 400
78133 4293
61310 6071
Mean number of organismssample 821 Standard deviation 275
M b f 2ean num er 0 organlsms m 70491 1 Standard deviation 236369
H= 215 SD= 073 SR= 114 J= 060
A-30
STATION 18 Date 17 Jul y 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom 203 C No of samples 10
Frequency Density (001 2 Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 339 1000 291065 119140 Turbellaria 3 200 2576 5795 ~~2~b~~ limnipoundQ12Oligochaeta
4 18S
300 1000
3434 161417
6003 89393
~~iQQy~~~ls in~(ID~Qi bim~Qampy~bg(2 Spa
34 16
800 700
29192 1373B
22967 15252
~g(gebi~m ~21mQni2 Harpacticoida
52 3
1000 200
44647 2576
25212 5795
2ampQ11Q1202 ampS02Qg~2i2 Chironomid larvae
18 10
700 700
15455 8586
13904 701 0
Mean number of organi$mssample 667 Standard deviation IBB
H ean nurn b er 1 20 f organIsms m 572686 Standard deviation 161750
H = 1 99 SD= 065 SR= 090 J= 060
A-31
STATION 58 Date 17 July 1984 Depth 55 AI
Salinity (bottom) 00 ppt Temperature (bottom) 197 C No of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nellatoda 173 1000 14853B 66390 Turbellaria 1 100 859 271 5 ~~~n~hu ini~QA Oligochaeta
1 46
100 1000
859 39496
2715 26293
~gipoundQy~~ygl2 in~rJg~i~ b1nQglYRnY~ Yi( Bivalvia
6 2 1
400 200 100
5152 1717 859
8295 3620 271 5
ei~ IDnH~n~i~ 2 200 171 7 3620 Ostracoda 1 100 959 271 5 biIDQHlh~( Spa ~Q(QRbim ~21Qnisect Diptera pupae
1 94
1
100 1000 100
859 80708
859
2715 35332 2715
Heleidae 1arvae 5 500 4293 4525 Chironomid larvae 1 100 859 2715
Mean number of organismssample 335 Standard deviatiDn 113
Mean number of organismsRI2 287631 Standard deviation 97413
H= 1 86 SO= 064 SR= 155 J= 049
A-32
STATION 55 Date 17 July 1984 Depth 18 m Sali nity (bottom) 00 ppt TeAlperature (bottom) 199 C No of samples 10
Frequency Density (nom2 ) occurrence
Taxa (X) x S D
Nematoda 61 1000 52375 33972 Turbellaria 1 100 859 2715 Oligochaeta 24 900 20606 11590 ~~i2QY~k~~1 iOi[2 bimDQ~xlb~r sp ~Q[QQhi~ sectgni~ Chironomid larvae
3 1
38 3
200 100
1000 300
2576 859
32627 2576
5795 2715
19326 4147
Mean number of organismssample 131 standard deviation 54
M b f 2ean num er 0 organIsms 112477 Standard deviation 46757
H= 184 SD= 066 SR= 085 J= 065
bull
A-33
STATION 45 Date 1 August 1984 Depth 58 m Sal i nity (bottoll) 03 ppt Temperature (bottom) 203 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa nUllber (X) X SD
Nematoda 145 1000 124417 52344 Turbellaria 1 100 859 2715 Mmth~sect iHpoundQ~ Q~~Qi ilQ[i9Oligochaeta
5 3
196
500 300
1000
4293 2576
168286
4525 4147
91064 ~igQYsect~~li int9i Ostracoda
2 3
100 300
171 7 2576
5430 4147
bimnQpoundtl sp ~Q[Q2hiY sectlQni~
240 6
1000 600
206064 5152
73526 4434
sectpoundQtQl poundngnai~Helei dae larvae
1862 1
1000 100
1598713 859
966134 271 ~
Mean number of organismssample 2464 Standard deviation 1156
211 ean num ber 0 f organIsms II 2115590 Standard deviation 992518
H= 124 SD= 041 SR= 089 J= 036
A-34
STATION 1S Date 1 August 1984 Depth 24 II
Salinity (bottom) 00 ppt Temperature (bottom) 198 C No of samp I es 10
Frequency Density (nom2) occurrence ---------------- shy
Taxa (X) X S D
Nuertea 1 100 859 2715 Nellatolllorpha 1 100 859 2715 Nematoda 248 1000 212933 108288 Turbellaria 4 400 3434 4434 ~untb~la Hli~g Oligochaeta
4 206
400 1000
3434 176872
4434 75309
~~igQYli~dli i[t~(gi~ ~QtQpound l binQ~ybt2 sp ~2l~bi Q[i ~2tlgtQ(ila tirisect sectpoundQtel poundl9lla Chironomid larvae
10 1
20 205
1 574
9
500 100 800
1000 100
1000 400
8586 859
17172 176013
859 492836
7727
10709 271 5
14021 48104
271 5 150531
13696
Mean number of organismssample 1284 Standard deviation 290
M b f I 2ean nurn er 0 organIsms III 1102442 Standard deviation 2488B5
H= 211 SD= 071 SR= 1 16 J= 057
A-35
STATION 58 Date 1 August 1984 Depth 55 m Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samp 1es 10
Frequency Densi ty _ ltnom2 ) Total occurrence
Taxa number (7) X SD
Nemertea 1 100 859 2715 Nematoda 22 900 18889 15036 Turbellaria 1 100 859 2715 Oligochaeta 19 700 16313 17385 biiQQgl~QhY~ YiCg~~ 2 200 171 7 3620 ~Q[~i~~l~ m2nil~n2i2 ~Q[QehiYm ~lmQni2
4 164
300 1000
3434 140810
6003 103048
Heleidae larvae 8 500 6869 8868
Mean number of organismssample 221 Standard deviation 111
I 2Mean num ber 0 f organIsms m 189751 Standard deviation 95391
H = L 37 SD= 043 SR= 090 J= 046
A-36
STATION 55 Date 1 August 1984 Depth 15 m Salinity (bottoll) 01 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (i ) X SD
Nemertea 1 100 859 2715 Neutoda 122 1000 104749 7394B Turbellaria 4 300 3434 6003 ~~~~~nt~ secte~poundQa~ Oligochaeta
1 118
100 1000
859 101315
2715 61223
~giQgY~k~~l iot~[m~Qi btbQg~2b~ Y[O ~grQipound~ ~nl~ni b~ngpound~tb~[ Spa
3 1 5 1
200 100 500 100
2576 859
4293 859
5795 2715 4525 2715
~Q[QebiYm ~mQoi sect~QttQ~ ~OQOi Heleidae larvae
42 2 2
800 200 100
36061 171 7 171 7
21341 3620 5430
Chironomid larvae 4 400 3434 4434
Mean number of organismssapIe 306 Standard deviation 169
M b f I 2ean nurn er 0 organIsms m 262732 Standard deviation 145101
H = 198 SD= 067 SR= 1 45 J= 054
A-37
~-- --------------~~-------------
STATION 45 Date 17 August 1984 Depth 61 1
Salinity (bottom) 10 ppt Temperature (bottom) 210 C No of samp 1es 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nematoda 240 1000 206064 130213 ~~h~sect limQ tjQ~~Hi~ fQ[i~~ Oligochaeta
31 2
245
400 100
1000
26617 1717
210357
75228 5430
121374 babgglYQbl~ Yi[~sect 1 100 859 2715 Ostracoda 1 100 859 271 5 biQ~xtb~[ Spa ~~Q~~isect ~[pound~Qisect ~Qgebi HQOi
333 2
143
1000 200
1000
28591 4 171 7
1227BO
106553 3620
106860 sectpoundQUg~ poundg~nsectisect 1738 1000 1492247 68441 7
Mean number of organismssample 2736 Standard deviation 944
M b f I 2ean num er 0 organlslls m 2349130 Standard deviation 810600
H= 172 SD= 056 SR= 079 J= 052
A-38
STATION 18 Date 17 August 1984 Depth 27 III
Sal i ni ty (botto) 01 ppt Temperature (bottom) 214 C No of samples 10
Frequency Density (nom 2 ) occurrence
Taxa (X) X SD
Nematoda 186 1000 159700 62468 ~tgt SPa 2 100 171 7 5430 Turbellaria 8 400 6869 8868 ~~ntbg2 imnipoundQ 12 700 10303 11304 Oligochaeta 283 1000 242984 90509 ~~iQQY~~Y~lls inlgtmggisBivalvia
4 1
400 100
3434 859
4434 271 5
~Qt~i~Y nilnsectisectbimnQpoundttbg[s SPa ~QtQQbi~ islmQDi2
1 17
286
100 900
1000
859 14596
245560
271 5 10747 83461
sectpoundetteln poundDsggnsectisect Chironomid larvae
526 4
1000 3Q0
451624 3434
179610 6003
Mean number of organismssapIe 1330 Standard deviation 162
Mean nurn ber I 20 f organIsms m 1141938 Standard deviation 139389
H= 214 SD= 073 SR= 1 06 J= 060
A-39
STATION 58 Date 17 August 1984 Depth 55 II
Salinity (bottom) 01 ppt Temperature (bottom) 220 C ND of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (7) x S D
Nematoda 68 1000 58385 27689 Turbellar i a 4 200 3434 8295 Oligochaeta 19 800 16313 13084 ~~i~Q~k~~l~ in~~[m~i bitUQ9Y2bYa Yi[~na Bivalvia
3 3 4
300 300 300
2576 2576 3434
4147 4147 6003
gQ[QipoundYl~ mnilDa 1 100 859 2715 binQpoundY~[ sp gQ[Q2UY a~mgnia sect~Qtgl~n ~n~~ni
2 338
6
100 1000 400
171 7 290207
5152
5430 56636 7240
Mean number of organismssample 448 Standard deviation 72
W b f 2lean num er 0 organlsms II 384653 Standard deviation 61988
H = 1 27 SD= 041 SR= 1 02 J= 038
A-40
STATION 55 Date 17 August 1984 Depth 18 m Salinity (bottom) 00 ppt Temperature (bottol) 223 C No of samples 10
Frequency Density (nom 2 ) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 291 1000 249853 118104 Turbellaria 1 100 859 2715 M~ntb~ mni~Q Oligochaeta
1 47
100 1000
859 40354
2715 28347
~~iQQ~sectkY~ll int~[m~gi bitbQQ1YSDY Yi(gn Bivalvia
25 12
6
900 500 400
21465 10303 5152
1231 0 18459 7240
~Q~2ipoundY mnil~ni Ostracoda
11 8
400 600
9445 6869
12442 6773
bmnQpoundYb~r~ SPa 52 1000 44647 19746 ~QrQsbY lmgnisectsQiielo snQ~ni~ Chironomid larvae
43 5
15
1000 400 BOO
36920 4293
12879
21436 6071 8344
Mean number of organismssample 517 Standard deviation 174
M b f I 2ean num er 0 organlsms m 443896 Standard deviation 149431
W = 228 SD= 065 SR= 1 33 J= 062
A-41
STATION 45 Date 29 August 1984 Depth 55 III
Salinity (bottom) 07 ppt Temperature (bottom) 199 C No of samples 10
Frequency Density (noI 2) Total occurrence
Taxa number (X) X SD
Nematoda 192 1000 164851 98380 ~sntbsect limnipoundQlDligochaeta
2 198
200 1000
171 7 170003
3620 67339
~Q[eipoundYls msniln~isect Ostracoda
1 4
100 400
859 3434
2715 4434
bimnQpoundytb[s Spa gQ[Qeniy sect21QOi~ sectpoundQttQlsO poundsOsggOi
164 87
2468
1000 1000 1000
140810 74698
2119025
39283 39460
840890
Mean number of organismssample 311 6 Standard deviation 101 1
ill b f 2nean nUll er 0 organIsms 2675398 Standard deviation 8682B8
W= 116 SD= 036 SR= 060 J= 039
A-42
STATION 18 Date 29 August 1984 Depth 30 bull Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samples 10
Total Frequency occurrence
Densi ty 2
(nom )
Taxa number (~ ) x S D
Nematoda 150 1000 128790 28905 Turbellaria 7 400 6010 9096 ~nh imni~Qj Oligochaeta ~~i~2Y~k~~1 ini~CIDgii bih2g~Qb~ Yi(~U2 Bivalvi a
B 145
1 1 2
600 1000
100 100 200
6869 124497
859 859
171 7
677 3 84732
271S 2715 3620
~Q[Qi~yli miDllgni bimn2pound~ih~C sp ~QtQehiY imQUia Harpacticoida
7 7
265 1
500 300
1000 100
6010 601 0
227529 859
8145 10747
139462 2715
sect~QtiQDi ~Q~Q~i~ Chironomid larvae
2471 2
1000 200
2121601 171 7
1063112 3620
Mean number of organismssample 3067 Standard deviation 121 9
2Mean number 0 f organIsms m 2633326 standard deviation 1046718
H = 1 09 SD= 034 SR= 1 04 J= 029
A-43
STATION 58 Date 29 August 1984 Depth 55 111
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (noI 2 ) Total occurrence -----------------
Taxa nUllber (X) X SD
Nemertea 4 400 3434 4434 Nuatoda 64 1000 54950 25016 Turbellaria 9 400 7727 11047 ~Hl~b limli~Q19 Oligochaeta
1 37
100 1000
859 31769
2715 19006
i~Qyh il(~~ bHtlQSlheln Yl Bivalvia
4 4
20
200 300 400
3434 3434
17172
8215 6003
26541 ~e(ijY l bQ~dlH sp
26 1
700 100
22324 859
25662 2715
~Q[QQhil iQ sectjgUell HD Heleidae larvae
418 20
1
1000 800 100
358895 17172
859
129443 12799 271 5
Mean number of organismssample 609 Standard deviation 175
nean num b er 0 f organIsms 1 111 2 522887 Standard deviation 150164
H= 176 SD= 051 SR= 1 30 J= 047
A-44
I I
I
I
STATION SS
Date 29 August 1984 Depth 21 1
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (no2) Total occurrence
Taxa nUllber (X) x S D
Nematoda ISO 1000 128790 37969 Turbellaria 1 100 859 271 5 Oligochaeta 48 1000 41213 16088 ~i~g~sect~~l iQ~~mgi bi~QQg~gb~sect ~i~nsect
10 14
600 600
eSB6 12020
9050 14137
Bivalvia 4 200 3434 7240 ~Q[Q~Yl niQaa Ostracoda
15 7
700 SOO
12879 6010
15806 7069
bmQg~~~b~ SPa 14 800 12020 8295 ~g[gaby mgni sect~g~~Qn ~ngnai Chironomid larvae
IB4 25 9
1000 900 700
157982 21465
7727
35563 16810 6335shy
Mean number of organismssample 481 Standard deviation B6
2Mean number 0 f organlsms m 412987 Standard deviation 74131
H= 24S SD= 074 SR= 1 23 J= 068
A-45
STATION 45 Date 14 September 1984 Depth 61 11
Salinity (bottom) 03 ppt Temperature (bottom) IB4 C No of samples 10
---------------------------------~----------------------------------------
Taxa TotalnUlllDer
Frequency occ~~~ence
Density (no 2) -----X-------sect7B
Nematoda 189 1000 162275 85233 t1tQ SPa
Turbellaria 2 2
200 100
171 7 171 7
3620 5430
~~~nIng limoifQl t1QQQDi~ flQriQ Oligochaeta
5 19
142
400 800
1000
4293 1631 3
121921
6071 12442 30504
~QQifYl mDl~D bimoQpoundt1hgr Spa Cumacea
19 184
2
800 1000 200
1631 3 157982
171 7
130B4 69541 3620
~Q[QnniYm ~~lmQDi Harpacticoida
118 1
1000 100
10131 5 B59
43367 2715
sectfQIIQD fOQgO Chironomid larvae
1780 1
1000 100
1528308 859
673586 2715
Mean number of organismssample 2464 Standard deviation 874
M ean num b er f 20 organlsms 2115590 Standard deviation 750305
H= 151 SD= 046 SR= 1 07 J= 041
A-46
STATION 18 Date 14 September 1984 Depth 21 III
Salinity (bottom) 01 ppt Temperature (botto) 182 C No of samples 10
Frequency DenSity (nom 2 ) Total occurrence ---------------- shy
Taxa nUlDber (i) X SD
Nemertea 1 100 859 271 5 Nematoda 186 1000 159700 44925 Turbellaria 16 400 13738 20717 ~~Dth~~ limni~Ql Oligochaeta
13 55
700 900
11162 47223
9096 30085
~Q~ei~Yl nil~Qi~ 17 900 14596 7069 bimDg~lbg[ Spa b 500 5152 6003 ~Q[Q2niY ~lgQi~ Harpacti coi da
562 2
1000 200
482533 171 7
136766 3620
sectpoundQttQ~Q~ ~n~ni 791 1000 679153 324290
Mean number of organismssample 1649 Standard deviation 447
I 211ean nUll ber 0 f organIsms I 1415831 Standard deviation 384136
H= 179 SD= 064 SR= 084 J= 054
A-47
STATION 58 Date 14 September 1984 Depth 58 III
Salinity (bottom) 01 ppt Temperature (bottom) 191 C No of sampl es 10
-------------------------------------------~------------------------------Frequency Density (nom 2 )
Total occurrence Taxa number eX) X SD
Nemertea 1 100 859 2715 Nematoda 55 1000 47223 18658 Turbellaria 10 500 8586 11448
1 100 859 2715 Oligochaeta 41 1000 35203 17850 ~~iQQ~~gll iu1g[m~i ~Q[Q~Yl nilD bimnQ~Y~h[ Spa ~Q[Q~hiYm lmgui sectpoundQilg1D poundU2D Chironomid larvae
4 10
2 277
23 4
100 500 200
1000 700 300
3434 8586 171 7
237832 19748 3434
10861 11448 3620
50561 21051 6003
Mean number of organismssample 428 Standard deviation 51
M b f 2ean num er 0 organIsms III 367481 Standard deviation 43743
H= 179 SD= 055 SR= 114 J= 052
A-48
I I
STATION SS Date 14 September 1984 Depth 21 II
Salinity (bottom) 01 ppt Temperature (bottom) 190 C No of samples 10
--------------------------------------------------------------------~-----
Frequency Density (no1I2) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 102 1000 87577 39200 Oligochaeta 34 700 29192 31142 ~iQ2Y~y1 int(mgi~ bithQgl~en~ Yi(gDsect ~Q(~i~Y m~DilgDsecti~ bimDQamp~1h(sect sp ~2(QQhiY slmQD 2poundQiiQlsD ~sD~g~nsecti Chironomid larvae
36 18 16 17
100 16
3
1000 600 800 700
1000 800 300
30910 15455 13738 14596 85860 13738 2576
157BO 20953 10078 14621 32126 10861 4147
Mean number of organismssample 342 Standard deviation 97
2Mean nUllber 0 f organlsms m 293641 Standard deviation 83617
H= 262 SD= 079 SR= 095 J= 083
A-49
Appendix B--Sediment particle size and organic content of the Cathlamet Bay
benthic invertebrate sites 13 March through 14 September
1984
iii
1
Station 18a 48 54 57
Survey 1 1 1 1
Month March March March March
Day 13 13 13 13
Particle size (mm) Phib Percent by weight
gt 40 -2 000 000 000
20- 40 -1 000 000 000
10- 20 0 000 009 000
05- 10 1 018 1079 032
025- 050 2 545 7583 2468
0125- 025 3 8731 1225 6783
00625-0125 4 491 037 657
lt0625 (5-12) 216 067 060
Organic Content 160 116 128
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
b Phi= -log2(sediment particle diameter in mm)
B-1
Station 18a 48 54 57
Survey 2 2 2 2
Month April April April April
Day 5 5 5 5
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 003 093 000
05shy 10 1 005 31 75 023
025shy 050 2 087 5904 2368
0125- 025 3 6316 750 7155
00625-0125 4 3056 026 427
lt0625 (5-12) 533 052 028
Organic Content 081 077 065
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-2
Station 45 55 58
Survey 3 3 3 3
Month April April April April
Day 18 18 18 18
Particle size (mm)
gt 40
Phi
-2
Percent by weight
000 000 000
20shy 40 -1 000 000 000
10shy 20 0 005 009 004
05shy 10 1 010 027 013
025shy 050 2 015 095 225
0125- 025 3 097 536 6111
00625-0125 4 453 2821 2205
lt0625 (5-12) 9420 6511 1442
Organic Content 31 42 14
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-3
Station 18a 45 55 58
Survey 4 4 4 4
Month May May May May
Day 4 4 4 4
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 021
05shy 10 1 000 065 063
025shy 050 2 012 370 230
0125- 025 3 091 4099 4696
00625-0125 4 322 3650 3052
lt0625 (5-12) 9575 1810 1939
Organic Content 330 180 160
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-4
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
5
May
17
000
000
005
016
217
5862
2729
1170
100
45 55 58
5 5 5
May May May
17 17 17
Percent by weight
000 000
000 000
005 008
113 031
325 274
1903 5613
2784 2401
4870 1672
240 110
000
000
000
010
020
079
397
9494
390
B-5
Station 18al 45 55 58
Survey 6 6 6 6
Month June June June June
Day 6 6 6 6
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 020
05shy 10 1 005 051 027
025shy 050 2 005 301 1 79
0125- 025 3 074 3189 5404
00625-0125 4 599 4118 2885
lt0625 (5-12) 9317 2332 1485
Organic Content 340 240 150
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-6
Station
Survey
Month
Day
Particle size Cmm) Phi
gt 40 -2
20shy 40 -1
10shy 20 a
05shy 10 1
025shy 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
7
June
18
000
000
005
029
138
3917
4143
1768
180
45
7
June
18
55 58
7 7
June June
18 18
Percent by weight
000
000
000
010
020
080
427
9464
310
000 000
000 000
000 007
011 022
057 190
957 5286
3023 2642
5957 1853
1 70 110
B-7
Station 18al 45 55 58
Survey 8 8 8 8
Month July July July July
Day 2 2 2 2
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 006 002 006
05shy 10 1 006 0l3 023
025shy 050 2 017 088 171
0125- 025 3 074 2712 5365
00625-0125 4 552 3892 3081
lt0625 (5-12) 9345 3294 l354
Organic Content 410 210 160
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-8
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
9
July
17
000
000
003
013
130
4294
4434
1127
130
45
9
July
17
Percent
000
000
000
006
012
051
046
9885
290
55
9
July
17
by weight
000
000
019
048
091
628
3616
5597
030
58
9
July
17
000
000
004
022
158
5017
3148
1650
140
B-9
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18al
10
August
1
45
10
August
1
55
10
August
1
58
10
August
1
Percent by weight
000 000
000 004
001 004
009 018
018 088
098 306
049 2510
9824 7070
000
005
045
763
3604
4495
932
156
100 190 060
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-10
Station 18 45 55 58
Survey 11 11 11 11
Month August August August August
Day 17 17 17 17
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000 000
20- 40 -1 005 000 000 000
10- 20 0 021 003 000 210
05- 10 1 064 009 000 159
025- 050 2 226 027 045 2656
0125- 025 3 3259 131 712 3719
00625-0125 4 4327 195 1737 1159
lt0625 (5-12) 2098 9635 7506 2097
Organic Content 210 300 160 100
Ii I
B-11
Station
Survey
Month
Day
Particle size (mm) Phi
gt40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
12
August
29
000
000
012
046
186
3465
4498
17 93
241
45
12
August
29
55 58
12 12
August August
29 29
Percent by weight
000
000
002
009
026
118
189
9656
540
000 000
000 000
003 011
011 028
055 1013
859 5033
1596 1827
7476 2089
1 70 120
B-12
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
_-------------------- shy
B-13
STATION 55 Date 1 June 1984 Depth 27 m Salinity (bottom) 00 ppt Temp era t u r e (b 0 t tom) 140 C No of samples 10
Frequency Density (nom 2 ) Total occurrence
Taxa nueber (X) X SD
Nematoda 157 1000 134800 69524 Turbellaria 9 400 7727 13696 tlHl~lk ~2~~iQH 1 100 859 2715 Oligochaeta 49 1000 42071 32745 ~~iQQysect~gl~ S[l9sect bHbQghQb~~ Yirl~
10 1
400 100
8586 859
12799 2715
tQ[Qpoundls l2lilUsect bilQHSbg[ sp ~QrQQbil nllQisectHarpacticoida
4 7
134 1
400 500
1000 100
3434 6010
115052 859
4434 7069
44742 271 5
sectpoundQUQlls poundsQgn~sect Chironomid larvae
1 1
100 100
859 859
271 5 2715
Hydracarina 1 100 859 2715
Hean number of organismssample 376 Standard deviation 132
M b f 2ean num er 0 organIsms m 322834 Standard deviation 113127
H= 202 SD= 068 SR= 1 40 J= 055
A-21
STATION 45 Date 18 June 1984 Depth 67 m Salinity (bottom) 01 ppt Temperature (bottom) 149 C No of samples 10
Frequency Density (nom2)
Taxa Total nUllber
occurrence ex) i SD
Nematoda 109 1000 93587 3891 7 Turbell ari a 3 200 2576 5795 ~g~tbg limoipoundQl Q~Qni2 fQ(i~2 Oligochaeta ~gigQ~~Y inl[ggi ~Q[QiSY2 moilo Ostracoda
3 2
194 44
7 3
200 200
1000 1000 200 200
2576 171 7
16656B 37778 6010 2576
5795 3620
118364 36020 12831 5795
bimoQampl~n~[2 sp ~Q[QQbiYm lmgoi Harpacticoida sectpoundQQ1202 pound2022Osect Chironomid larvae
68 1 1
113 2
900 100 100
1000 200
58385 859 859
97022 171 7
97627 2715 2715
73976 3620
Mean number of organismssa_pie 550 Standard deviation 371
Mean nUll ber 0 f organIsms 2II 472230 Standard deviation 318519
H= 242 SD= 077 SR= 1 32 Ja 065
A-22
STATION 18 Date 18 June 1984 Depth 34 m Salinity (bottom) 00 ppt Temperature (bottom) 155 C No of samples 10
Frequency Density (nom 2) Total occurrence ----------------shy
Taxa nUlber (Z) X SD
Neutoda 291 1000 249853 138826 Turbellaria 1 100 859 2715 ~~n~~nki~ sectQ~~iQ~2 ~g~ntbg2 limni~Q9 Oligochaeta
1 3
123
100 300
1000
859 2576
105608
271 5 4147
48240 ~~igQY~~~~9 int~(mgii ~Q[~i~~~ mini~ni bimnQ~ylbg(~ Spa
67 6 5
1000 500 400
57526 5152 4293
40485 6003 6071
~Q(QebiYm ~imQnisect Harpacticoida
80 2
1000 200
68688 171 7
41276 3620
sect~QttQini ~2nig~n~i Chironomid larvae
2 4
200 300
171 7 3434
3620 6003
Mean number of organismssample 585 Standard deviation 194
I 2Mean urn b er 0 f organIsms m 502281 Standard deviation 166943
H= 203 SD= 068 SR= 1 20 J= 057
A-23
STATI ON 58 Date 18 June 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (noI 2) Total occurrence
TaKa number (X) X SD
Nellertea 2 100 1717 5430 Nematoda 160 1000 137376 6361 1 Turbellaria 4 400 3434 4434 Oligochaeta 36 1000 3091 0 14705 ~iQQYik~ Q1rQ 4 300 3434 6003 bitnQgl~ebysect YrDsect ~Q[QiY~ ~~nni biQQpoundY1h[ sp ~Q[Qeng ~ilQD Chironomid larvae
3 1 3
61 1
300 100 300
1000 100
2576 859
2576 52375
859
4147 2715 4147
1428 1 2715
Chironollid pupae 1 100 859 271 5
Mean number of organismssample 276 standard deviation 72
nean nurn b er 0 f organIsms I 2 236974 Standard deviation 61410
H = 1 78 SD= 060 SR= 1 23 J= 051
A-24
STATION 55 Date 18 June 1984 Depth 18 m Salinity (bottom)1 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (no 1m2) occurrence
Taxa (X) X SD
Nematoda 160 1000 137376 43967 Turbellaria 1 100 859 271 5 Oligochaeta 61 1000 52375 31985 ~~iQQY~kY~~ int~[mQi~ ~Q[Qipound~l~ m~nini~ biIDnQ~Ylb[s sp
3 3 3
300 300 300
2576 2576 2576
4147 4147 4147
~Q[Q~bi~ ~slIDQni~ Chironomid larvae
85 6
1000 600
72981 5152
34165 4434
Mean number of organismssample 322 Standard deviation 75
2Mean number 0 f organIsms m 276469 Standard deviation 64099
H= 178 5D= 065 SR= 0B4 J= 059
A-25
Frequency Density (no2) occurrence -----------------
Taxa (7) X SD
Nematoda 104 1000 89294 47409 Turbell ar i a 1 100 859 2715 ~~~nQ~sect imni~Q~ tjQQsectQlis flQig~ Oligochaeta
2 1
297
100 100
1000
171 7 859
255004
5430 271 5
146273 ~~i~QYsect~Y~lls ilr2is gQrQi~y~ IDDilDia
24 4
600 300
20606 3434
27212 6003
Ostracoda 2 200 171 7 3620 biDQSy~b~C~ sp M~QYsectisect m~r~~Qi ~QrQeniy QD Harpacticoida
157 1 1 1
900 100 100 100
134800 859 859 859
73197 2715 2715 2715
sectpoundQttQDs SsDQD 113 900 97022 61656
STATION 45 Date 2 July 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) No of samples 10
172 C
Mean number of organismssample 708 Standard deviation 339
M ean num b er f 20 organisms 607889 Standard deviation 290B22
H= 216 SD= 073 SR= 1 27 J= 058
1-26
STATION 18 Date 2 July 1984 Depth 24 WI
Sal inity (bottom) 00 ppt Temperature (bottom) 172 C No of samples 10
--------------------------------~-----------------------------------------Frequency Density (nom2)
Total occurrence Taxa number (7) X SD
Nematoda 202 1000 173437 113532 ~~~nih~sect mnpoundQ~ Oligochleta
4 102
400 1000
3434 87577
4434 54873
~~igQYsect~Y~12 inl~rmgi2 ~Q[~poundYl~ m~ni~nsectisect bimnQpoundylh~[~ Spa
115 4
15
900 300 900
98739 3434
12879
100720 6003 9274
~Q[QQniY~ sect~QDi~ 55 900 47223 40525 Harpacticoida 1 100 859 2715 sectpoundQiiQlD SDg~DEisect Chironomid larvae
2 6
200 400
1717 5152
3620 7240
Hymenoptera 1 100 859 2715 Hydracarina 1 100 859 2715
Mean number of organismssample 508 Standard deviation 253
2Mean num ber 0 f organIsms m 436169 Standard deviation 217580
H= 225 SD= 074 SR= 1 22 J= 063
A-27
STATION 58 Date 2 July 1984 Depth 58 1
Salinity (bottom) 00 ppt Temperature (bottom) IBO C No of samples 10
Frequency Density (no2) Total occurrence
Taxa number ltX) i SD
Nematoda 151 1000 129649 42729 Turbellaria 1 100 859 2715 01 i gochaeta 41 1000 35203 22698 ~~i~e~~~ int~~m~~ 3 200 2576 5795 btbQglYRhY~ Yir~n~ ~e~~ampy mni~niii bimQeamp~tb~ sp ~e~eQhiY ~mQni Chironomid larvae
1 4 2
68 1
100 300 200
1000 100
859 3434 171 7
58385 859
271 5 6003 3620
1557 1 2715
Mean number of organisassample 272 Standard deviation
I 2Mean num ber 0 f organIsms I 233539 Standard deviation 62546
H = 1 69 SD= 061 SR= 099 J= 053
A-28
73
STATION 55 Date 2 July 1984 Depth 15 III
Salinity (bottom) 00 ppt Temperature (bottom) 182 C No of samples 10
Frequency Density (nom2) occurrence
Taxa (X) X SD
Nematoda 184 1()00 157982 5264B Turbellaria 1 100 859 271 5 Oligochaeta ~~iQQ~sect~Y~ll~ n~[~~Qi~ bitnggYQDYsect Yi[~nsect ~QrQipoundM2 m2ni~nsectisect bimnQpoundYn~[2 sp ~QrQQhiM Qni Harpacticoida
91 2 1 B 2
96 2
1000 200 100 500 200
1000 200
78133 171 7 859
6869 171 7
82426 1111
26058 3620 271 5 1890 3620shy
25980 3620
ChirDnomid larvae 5 400 4293 6071 Chironolllid pupae 1 100 859 2715
Mean number of organismssample 393 Standard deviation 53
2t1ean nUllber Df organlsms III 337430 Standard deviatiDn 45080
H= 187 SD= 067 SR= 116 J= 054
A-29
STATION 45 Date 17 Jul y 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (X) X SD
Nematoda 215 1000 184599 45837 ~~n~b~~ imDipoundQ Qe~Qni fllHi2
3 1
300 100
2576 859
4147 2715
Oligochaeta 305 1000 261873 147955 ~~iQQY~k~ in~rm~2i ~Qr~ipoundYl IDniln~i~ Ostracoda
17 1 2
500 100 200
14590 859
171 7
22554 2715 3620
bmnQpound~ihr sp ~QCQQhiY ~lQD~
176 1
1000 100
151114 859
57125 2715
Harpacticoida 4 300 3434 6003 sectQ~~Qn poundnQnai~ Chironomid larvae
91 5
1000 400
78133 4293
61310 6071
Mean number of organismssample 821 Standard deviation 275
M b f 2ean num er 0 organlsms m 70491 1 Standard deviation 236369
H= 215 SD= 073 SR= 114 J= 060
A-30
STATION 18 Date 17 Jul y 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom 203 C No of samples 10
Frequency Density (001 2 Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 339 1000 291065 119140 Turbellaria 3 200 2576 5795 ~~2~b~~ limnipoundQ12Oligochaeta
4 18S
300 1000
3434 161417
6003 89393
~~iQQy~~~ls in~(ID~Qi bim~Qampy~bg(2 Spa
34 16
800 700
29192 1373B
22967 15252
~g(gebi~m ~21mQni2 Harpacticoida
52 3
1000 200
44647 2576
25212 5795
2ampQ11Q1202 ampS02Qg~2i2 Chironomid larvae
18 10
700 700
15455 8586
13904 701 0
Mean number of organi$mssample 667 Standard deviation IBB
H ean nurn b er 1 20 f organIsms m 572686 Standard deviation 161750
H = 1 99 SD= 065 SR= 090 J= 060
A-31
STATION 58 Date 17 July 1984 Depth 55 AI
Salinity (bottom) 00 ppt Temperature (bottom) 197 C No of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nellatoda 173 1000 14853B 66390 Turbellaria 1 100 859 271 5 ~~~n~hu ini~QA Oligochaeta
1 46
100 1000
859 39496
2715 26293
~gipoundQy~~ygl2 in~rJg~i~ b1nQglYRnY~ Yi( Bivalvia
6 2 1
400 200 100
5152 1717 859
8295 3620 271 5
ei~ IDnH~n~i~ 2 200 171 7 3620 Ostracoda 1 100 959 271 5 biIDQHlh~( Spa ~Q(QRbim ~21Qnisect Diptera pupae
1 94
1
100 1000 100
859 80708
859
2715 35332 2715
Heleidae 1arvae 5 500 4293 4525 Chironomid larvae 1 100 859 2715
Mean number of organismssample 335 Standard deviatiDn 113
Mean number of organismsRI2 287631 Standard deviation 97413
H= 1 86 SO= 064 SR= 155 J= 049
A-32
STATION 55 Date 17 July 1984 Depth 18 m Sali nity (bottom) 00 ppt TeAlperature (bottom) 199 C No of samples 10
Frequency Density (nom2 ) occurrence
Taxa (X) x S D
Nematoda 61 1000 52375 33972 Turbellaria 1 100 859 2715 Oligochaeta 24 900 20606 11590 ~~i2QY~k~~1 iOi[2 bimDQ~xlb~r sp ~Q[QQhi~ sectgni~ Chironomid larvae
3 1
38 3
200 100
1000 300
2576 859
32627 2576
5795 2715
19326 4147
Mean number of organismssample 131 standard deviation 54
M b f 2ean num er 0 organIsms 112477 Standard deviation 46757
H= 184 SD= 066 SR= 085 J= 065
bull
A-33
STATION 45 Date 1 August 1984 Depth 58 m Sal i nity (bottoll) 03 ppt Temperature (bottom) 203 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa nUllber (X) X SD
Nematoda 145 1000 124417 52344 Turbellaria 1 100 859 2715 Mmth~sect iHpoundQ~ Q~~Qi ilQ[i9Oligochaeta
5 3
196
500 300
1000
4293 2576
168286
4525 4147
91064 ~igQYsect~~li int9i Ostracoda
2 3
100 300
171 7 2576
5430 4147
bimnQpoundtl sp ~Q[Q2hiY sectlQni~
240 6
1000 600
206064 5152
73526 4434
sectpoundQtQl poundngnai~Helei dae larvae
1862 1
1000 100
1598713 859
966134 271 ~
Mean number of organismssample 2464 Standard deviation 1156
211 ean num ber 0 f organIsms II 2115590 Standard deviation 992518
H= 124 SD= 041 SR= 089 J= 036
A-34
STATION 1S Date 1 August 1984 Depth 24 II
Salinity (bottom) 00 ppt Temperature (bottom) 198 C No of samp I es 10
Frequency Density (nom2) occurrence ---------------- shy
Taxa (X) X S D
Nuertea 1 100 859 2715 Nellatolllorpha 1 100 859 2715 Nematoda 248 1000 212933 108288 Turbellaria 4 400 3434 4434 ~untb~la Hli~g Oligochaeta
4 206
400 1000
3434 176872
4434 75309
~~igQYli~dli i[t~(gi~ ~QtQpound l binQ~ybt2 sp ~2l~bi Q[i ~2tlgtQ(ila tirisect sectpoundQtel poundl9lla Chironomid larvae
10 1
20 205
1 574
9
500 100 800
1000 100
1000 400
8586 859
17172 176013
859 492836
7727
10709 271 5
14021 48104
271 5 150531
13696
Mean number of organismssample 1284 Standard deviation 290
M b f I 2ean nurn er 0 organIsms III 1102442 Standard deviation 2488B5
H= 211 SD= 071 SR= 1 16 J= 057
A-35
STATION 58 Date 1 August 1984 Depth 55 m Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samp 1es 10
Frequency Densi ty _ ltnom2 ) Total occurrence
Taxa number (7) X SD
Nemertea 1 100 859 2715 Nematoda 22 900 18889 15036 Turbellaria 1 100 859 2715 Oligochaeta 19 700 16313 17385 biiQQgl~QhY~ YiCg~~ 2 200 171 7 3620 ~Q[~i~~l~ m2nil~n2i2 ~Q[QehiYm ~lmQni2
4 164
300 1000
3434 140810
6003 103048
Heleidae larvae 8 500 6869 8868
Mean number of organismssample 221 Standard deviation 111
I 2Mean num ber 0 f organIsms m 189751 Standard deviation 95391
H = L 37 SD= 043 SR= 090 J= 046
A-36
STATION 55 Date 1 August 1984 Depth 15 m Salinity (bottoll) 01 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (i ) X SD
Nemertea 1 100 859 2715 Neutoda 122 1000 104749 7394B Turbellaria 4 300 3434 6003 ~~~~~nt~ secte~poundQa~ Oligochaeta
1 118
100 1000
859 101315
2715 61223
~giQgY~k~~l iot~[m~Qi btbQg~2b~ Y[O ~grQipound~ ~nl~ni b~ngpound~tb~[ Spa
3 1 5 1
200 100 500 100
2576 859
4293 859
5795 2715 4525 2715
~Q[QebiYm ~mQoi sect~QttQ~ ~OQOi Heleidae larvae
42 2 2
800 200 100
36061 171 7 171 7
21341 3620 5430
Chironomid larvae 4 400 3434 4434
Mean number of organismssapIe 306 Standard deviation 169
M b f I 2ean nurn er 0 organIsms m 262732 Standard deviation 145101
H = 198 SD= 067 SR= 1 45 J= 054
A-37
~-- --------------~~-------------
STATION 45 Date 17 August 1984 Depth 61 1
Salinity (bottom) 10 ppt Temperature (bottom) 210 C No of samp 1es 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nematoda 240 1000 206064 130213 ~~h~sect limQ tjQ~~Hi~ fQ[i~~ Oligochaeta
31 2
245
400 100
1000
26617 1717
210357
75228 5430
121374 babgglYQbl~ Yi[~sect 1 100 859 2715 Ostracoda 1 100 859 271 5 biQ~xtb~[ Spa ~~Q~~isect ~[pound~Qisect ~Qgebi HQOi
333 2
143
1000 200
1000
28591 4 171 7
1227BO
106553 3620
106860 sectpoundQUg~ poundg~nsectisect 1738 1000 1492247 68441 7
Mean number of organismssample 2736 Standard deviation 944
M b f I 2ean num er 0 organlslls m 2349130 Standard deviation 810600
H= 172 SD= 056 SR= 079 J= 052
A-38
STATION 18 Date 17 August 1984 Depth 27 III
Sal i ni ty (botto) 01 ppt Temperature (bottom) 214 C No of samples 10
Frequency Density (nom 2 ) occurrence
Taxa (X) X SD
Nematoda 186 1000 159700 62468 ~tgt SPa 2 100 171 7 5430 Turbellaria 8 400 6869 8868 ~~ntbg2 imnipoundQ 12 700 10303 11304 Oligochaeta 283 1000 242984 90509 ~~iQQY~~Y~lls inlgtmggisBivalvia
4 1
400 100
3434 859
4434 271 5
~Qt~i~Y nilnsectisectbimnQpoundttbg[s SPa ~QtQQbi~ islmQDi2
1 17
286
100 900
1000
859 14596
245560
271 5 10747 83461
sectpoundetteln poundDsggnsectisect Chironomid larvae
526 4
1000 3Q0
451624 3434
179610 6003
Mean number of organismssapIe 1330 Standard deviation 162
Mean nurn ber I 20 f organIsms m 1141938 Standard deviation 139389
H= 214 SD= 073 SR= 1 06 J= 060
A-39
STATION 58 Date 17 August 1984 Depth 55 II
Salinity (bottom) 01 ppt Temperature (bottom) 220 C ND of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (7) x S D
Nematoda 68 1000 58385 27689 Turbellar i a 4 200 3434 8295 Oligochaeta 19 800 16313 13084 ~~i~Q~k~~l~ in~~[m~i bitUQ9Y2bYa Yi[~na Bivalvia
3 3 4
300 300 300
2576 2576 3434
4147 4147 6003
gQ[QipoundYl~ mnilDa 1 100 859 2715 binQpoundY~[ sp gQ[Q2UY a~mgnia sect~Qtgl~n ~n~~ni
2 338
6
100 1000 400
171 7 290207
5152
5430 56636 7240
Mean number of organismssample 448 Standard deviation 72
W b f 2lean num er 0 organlsms II 384653 Standard deviation 61988
H = 1 27 SD= 041 SR= 1 02 J= 038
A-40
STATION 55 Date 17 August 1984 Depth 18 m Salinity (bottom) 00 ppt Temperature (bottol) 223 C No of samples 10
Frequency Density (nom 2 ) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 291 1000 249853 118104 Turbellaria 1 100 859 2715 M~ntb~ mni~Q Oligochaeta
1 47
100 1000
859 40354
2715 28347
~~iQQ~sectkY~ll int~[m~gi bitbQQ1YSDY Yi(gn Bivalvia
25 12
6
900 500 400
21465 10303 5152
1231 0 18459 7240
~Q~2ipoundY mnil~ni Ostracoda
11 8
400 600
9445 6869
12442 6773
bmnQpoundYb~r~ SPa 52 1000 44647 19746 ~QrQsbY lmgnisectsQiielo snQ~ni~ Chironomid larvae
43 5
15
1000 400 BOO
36920 4293
12879
21436 6071 8344
Mean number of organismssample 517 Standard deviation 174
M b f I 2ean num er 0 organlsms m 443896 Standard deviation 149431
W = 228 SD= 065 SR= 1 33 J= 062
A-41
STATION 45 Date 29 August 1984 Depth 55 III
Salinity (bottom) 07 ppt Temperature (bottom) 199 C No of samples 10
Frequency Density (noI 2) Total occurrence
Taxa number (X) X SD
Nematoda 192 1000 164851 98380 ~sntbsect limnipoundQlDligochaeta
2 198
200 1000
171 7 170003
3620 67339
~Q[eipoundYls msniln~isect Ostracoda
1 4
100 400
859 3434
2715 4434
bimnQpoundytb[s Spa gQ[Qeniy sect21QOi~ sectpoundQttQlsO poundsOsggOi
164 87
2468
1000 1000 1000
140810 74698
2119025
39283 39460
840890
Mean number of organismssample 311 6 Standard deviation 101 1
ill b f 2nean nUll er 0 organIsms 2675398 Standard deviation 8682B8
W= 116 SD= 036 SR= 060 J= 039
A-42
STATION 18 Date 29 August 1984 Depth 30 bull Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samples 10
Total Frequency occurrence
Densi ty 2
(nom )
Taxa number (~ ) x S D
Nematoda 150 1000 128790 28905 Turbellaria 7 400 6010 9096 ~nh imni~Qj Oligochaeta ~~i~2Y~k~~1 ini~CIDgii bih2g~Qb~ Yi(~U2 Bivalvi a
B 145
1 1 2
600 1000
100 100 200
6869 124497
859 859
171 7
677 3 84732
271S 2715 3620
~Q[Qi~yli miDllgni bimn2pound~ih~C sp ~QtQehiY imQUia Harpacticoida
7 7
265 1
500 300
1000 100
6010 601 0
227529 859
8145 10747
139462 2715
sect~QtiQDi ~Q~Q~i~ Chironomid larvae
2471 2
1000 200
2121601 171 7
1063112 3620
Mean number of organismssample 3067 Standard deviation 121 9
2Mean number 0 f organIsms m 2633326 standard deviation 1046718
H = 1 09 SD= 034 SR= 1 04 J= 029
A-43
STATION 58 Date 29 August 1984 Depth 55 111
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (noI 2 ) Total occurrence -----------------
Taxa nUllber (X) X SD
Nemertea 4 400 3434 4434 Nuatoda 64 1000 54950 25016 Turbellaria 9 400 7727 11047 ~Hl~b limli~Q19 Oligochaeta
1 37
100 1000
859 31769
2715 19006
i~Qyh il(~~ bHtlQSlheln Yl Bivalvia
4 4
20
200 300 400
3434 3434
17172
8215 6003
26541 ~e(ijY l bQ~dlH sp
26 1
700 100
22324 859
25662 2715
~Q[QQhil iQ sectjgUell HD Heleidae larvae
418 20
1
1000 800 100
358895 17172
859
129443 12799 271 5
Mean number of organismssample 609 Standard deviation 175
nean num b er 0 f organIsms 1 111 2 522887 Standard deviation 150164
H= 176 SD= 051 SR= 1 30 J= 047
A-44
I I
I
I
STATION SS
Date 29 August 1984 Depth 21 1
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (no2) Total occurrence
Taxa nUllber (X) x S D
Nematoda ISO 1000 128790 37969 Turbellaria 1 100 859 271 5 Oligochaeta 48 1000 41213 16088 ~i~g~sect~~l iQ~~mgi bi~QQg~gb~sect ~i~nsect
10 14
600 600
eSB6 12020
9050 14137
Bivalvia 4 200 3434 7240 ~Q[Q~Yl niQaa Ostracoda
15 7
700 SOO
12879 6010
15806 7069
bmQg~~~b~ SPa 14 800 12020 8295 ~g[gaby mgni sect~g~~Qn ~ngnai Chironomid larvae
IB4 25 9
1000 900 700
157982 21465
7727
35563 16810 6335shy
Mean number of organismssample 481 Standard deviation B6
2Mean number 0 f organlsms m 412987 Standard deviation 74131
H= 24S SD= 074 SR= 1 23 J= 068
A-45
STATION 45 Date 14 September 1984 Depth 61 11
Salinity (bottom) 03 ppt Temperature (bottom) IB4 C No of samples 10
---------------------------------~----------------------------------------
Taxa TotalnUlllDer
Frequency occ~~~ence
Density (no 2) -----X-------sect7B
Nematoda 189 1000 162275 85233 t1tQ SPa
Turbellaria 2 2
200 100
171 7 171 7
3620 5430
~~~nIng limoifQl t1QQQDi~ flQriQ Oligochaeta
5 19
142
400 800
1000
4293 1631 3
121921
6071 12442 30504
~QQifYl mDl~D bimoQpoundt1hgr Spa Cumacea
19 184
2
800 1000 200
1631 3 157982
171 7
130B4 69541 3620
~Q[QnniYm ~~lmQDi Harpacticoida
118 1
1000 100
10131 5 B59
43367 2715
sectfQIIQD fOQgO Chironomid larvae
1780 1
1000 100
1528308 859
673586 2715
Mean number of organismssample 2464 Standard deviation 874
M ean num b er f 20 organlsms 2115590 Standard deviation 750305
H= 151 SD= 046 SR= 1 07 J= 041
A-46
STATION 18 Date 14 September 1984 Depth 21 III
Salinity (bottom) 01 ppt Temperature (botto) 182 C No of samples 10
Frequency DenSity (nom 2 ) Total occurrence ---------------- shy
Taxa nUlDber (i) X SD
Nemertea 1 100 859 271 5 Nematoda 186 1000 159700 44925 Turbellaria 16 400 13738 20717 ~~Dth~~ limni~Ql Oligochaeta
13 55
700 900
11162 47223
9096 30085
~Q~ei~Yl nil~Qi~ 17 900 14596 7069 bimDg~lbg[ Spa b 500 5152 6003 ~Q[Q2niY ~lgQi~ Harpacti coi da
562 2
1000 200
482533 171 7
136766 3620
sectpoundQttQ~Q~ ~n~ni 791 1000 679153 324290
Mean number of organismssample 1649 Standard deviation 447
I 211ean nUll ber 0 f organIsms I 1415831 Standard deviation 384136
H= 179 SD= 064 SR= 084 J= 054
A-47
STATION 58 Date 14 September 1984 Depth 58 III
Salinity (bottom) 01 ppt Temperature (bottom) 191 C No of sampl es 10
-------------------------------------------~------------------------------Frequency Density (nom 2 )
Total occurrence Taxa number eX) X SD
Nemertea 1 100 859 2715 Nematoda 55 1000 47223 18658 Turbellaria 10 500 8586 11448
1 100 859 2715 Oligochaeta 41 1000 35203 17850 ~~iQQ~~gll iu1g[m~i ~Q[Q~Yl nilD bimnQ~Y~h[ Spa ~Q[Q~hiYm lmgui sectpoundQilg1D poundU2D Chironomid larvae
4 10
2 277
23 4
100 500 200
1000 700 300
3434 8586 171 7
237832 19748 3434
10861 11448 3620
50561 21051 6003
Mean number of organismssample 428 Standard deviation 51
M b f 2ean num er 0 organIsms III 367481 Standard deviation 43743
H= 179 SD= 055 SR= 114 J= 052
A-48
I I
STATION SS Date 14 September 1984 Depth 21 II
Salinity (bottom) 01 ppt Temperature (bottom) 190 C No of samples 10
--------------------------------------------------------------------~-----
Frequency Density (no1I2) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 102 1000 87577 39200 Oligochaeta 34 700 29192 31142 ~iQ2Y~y1 int(mgi~ bithQgl~en~ Yi(gDsect ~Q(~i~Y m~DilgDsecti~ bimDQamp~1h(sect sp ~2(QQhiY slmQD 2poundQiiQlsD ~sD~g~nsecti Chironomid larvae
36 18 16 17
100 16
3
1000 600 800 700
1000 800 300
30910 15455 13738 14596 85860 13738 2576
157BO 20953 10078 14621 32126 10861 4147
Mean number of organismssample 342 Standard deviation 97
2Mean nUllber 0 f organlsms m 293641 Standard deviation 83617
H= 262 SD= 079 SR= 095 J= 083
A-49
Appendix B--Sediment particle size and organic content of the Cathlamet Bay
benthic invertebrate sites 13 March through 14 September
1984
iii
1
Station 18a 48 54 57
Survey 1 1 1 1
Month March March March March
Day 13 13 13 13
Particle size (mm) Phib Percent by weight
gt 40 -2 000 000 000
20- 40 -1 000 000 000
10- 20 0 000 009 000
05- 10 1 018 1079 032
025- 050 2 545 7583 2468
0125- 025 3 8731 1225 6783
00625-0125 4 491 037 657
lt0625 (5-12) 216 067 060
Organic Content 160 116 128
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
b Phi= -log2(sediment particle diameter in mm)
B-1
Station 18a 48 54 57
Survey 2 2 2 2
Month April April April April
Day 5 5 5 5
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 003 093 000
05shy 10 1 005 31 75 023
025shy 050 2 087 5904 2368
0125- 025 3 6316 750 7155
00625-0125 4 3056 026 427
lt0625 (5-12) 533 052 028
Organic Content 081 077 065
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-2
Station 45 55 58
Survey 3 3 3 3
Month April April April April
Day 18 18 18 18
Particle size (mm)
gt 40
Phi
-2
Percent by weight
000 000 000
20shy 40 -1 000 000 000
10shy 20 0 005 009 004
05shy 10 1 010 027 013
025shy 050 2 015 095 225
0125- 025 3 097 536 6111
00625-0125 4 453 2821 2205
lt0625 (5-12) 9420 6511 1442
Organic Content 31 42 14
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-3
Station 18a 45 55 58
Survey 4 4 4 4
Month May May May May
Day 4 4 4 4
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 021
05shy 10 1 000 065 063
025shy 050 2 012 370 230
0125- 025 3 091 4099 4696
00625-0125 4 322 3650 3052
lt0625 (5-12) 9575 1810 1939
Organic Content 330 180 160
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-4
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
5
May
17
000
000
005
016
217
5862
2729
1170
100
45 55 58
5 5 5
May May May
17 17 17
Percent by weight
000 000
000 000
005 008
113 031
325 274
1903 5613
2784 2401
4870 1672
240 110
000
000
000
010
020
079
397
9494
390
B-5
Station 18al 45 55 58
Survey 6 6 6 6
Month June June June June
Day 6 6 6 6
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 020
05shy 10 1 005 051 027
025shy 050 2 005 301 1 79
0125- 025 3 074 3189 5404
00625-0125 4 599 4118 2885
lt0625 (5-12) 9317 2332 1485
Organic Content 340 240 150
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-6
Station
Survey
Month
Day
Particle size Cmm) Phi
gt 40 -2
20shy 40 -1
10shy 20 a
05shy 10 1
025shy 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
7
June
18
000
000
005
029
138
3917
4143
1768
180
45
7
June
18
55 58
7 7
June June
18 18
Percent by weight
000
000
000
010
020
080
427
9464
310
000 000
000 000
000 007
011 022
057 190
957 5286
3023 2642
5957 1853
1 70 110
B-7
Station 18al 45 55 58
Survey 8 8 8 8
Month July July July July
Day 2 2 2 2
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 006 002 006
05shy 10 1 006 0l3 023
025shy 050 2 017 088 171
0125- 025 3 074 2712 5365
00625-0125 4 552 3892 3081
lt0625 (5-12) 9345 3294 l354
Organic Content 410 210 160
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-8
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
9
July
17
000
000
003
013
130
4294
4434
1127
130
45
9
July
17
Percent
000
000
000
006
012
051
046
9885
290
55
9
July
17
by weight
000
000
019
048
091
628
3616
5597
030
58
9
July
17
000
000
004
022
158
5017
3148
1650
140
B-9
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18al
10
August
1
45
10
August
1
55
10
August
1
58
10
August
1
Percent by weight
000 000
000 004
001 004
009 018
018 088
098 306
049 2510
9824 7070
000
005
045
763
3604
4495
932
156
100 190 060
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-10
Station 18 45 55 58
Survey 11 11 11 11
Month August August August August
Day 17 17 17 17
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000 000
20- 40 -1 005 000 000 000
10- 20 0 021 003 000 210
05- 10 1 064 009 000 159
025- 050 2 226 027 045 2656
0125- 025 3 3259 131 712 3719
00625-0125 4 4327 195 1737 1159
lt0625 (5-12) 2098 9635 7506 2097
Organic Content 210 300 160 100
Ii I
B-11
Station
Survey
Month
Day
Particle size (mm) Phi
gt40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
12
August
29
000
000
012
046
186
3465
4498
17 93
241
45
12
August
29
55 58
12 12
August August
29 29
Percent by weight
000
000
002
009
026
118
189
9656
540
000 000
000 000
003 011
011 028
055 1013
859 5033
1596 1827
7476 2089
1 70 120
B-12
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
_-------------------- shy
B-13
STATION 45 Date 18 June 1984 Depth 67 m Salinity (bottom) 01 ppt Temperature (bottom) 149 C No of samples 10
Frequency Density (nom2)
Taxa Total nUllber
occurrence ex) i SD
Nematoda 109 1000 93587 3891 7 Turbell ari a 3 200 2576 5795 ~g~tbg limoipoundQl Q~Qni2 fQ(i~2 Oligochaeta ~gigQ~~Y inl[ggi ~Q[QiSY2 moilo Ostracoda
3 2
194 44
7 3
200 200
1000 1000 200 200
2576 171 7
16656B 37778 6010 2576
5795 3620
118364 36020 12831 5795
bimoQampl~n~[2 sp ~Q[QQbiYm lmgoi Harpacticoida sectpoundQQ1202 pound2022Osect Chironomid larvae
68 1 1
113 2
900 100 100
1000 200
58385 859 859
97022 171 7
97627 2715 2715
73976 3620
Mean number of organismssa_pie 550 Standard deviation 371
Mean nUll ber 0 f organIsms 2II 472230 Standard deviation 318519
H= 242 SD= 077 SR= 1 32 Ja 065
A-22
STATION 18 Date 18 June 1984 Depth 34 m Salinity (bottom) 00 ppt Temperature (bottom) 155 C No of samples 10
Frequency Density (nom 2) Total occurrence ----------------shy
Taxa nUlber (Z) X SD
Neutoda 291 1000 249853 138826 Turbellaria 1 100 859 2715 ~~n~~nki~ sectQ~~iQ~2 ~g~ntbg2 limni~Q9 Oligochaeta
1 3
123
100 300
1000
859 2576
105608
271 5 4147
48240 ~~igQY~~~~9 int~(mgii ~Q[~i~~~ mini~ni bimnQ~ylbg(~ Spa
67 6 5
1000 500 400
57526 5152 4293
40485 6003 6071
~Q(QebiYm ~imQnisect Harpacticoida
80 2
1000 200
68688 171 7
41276 3620
sect~QttQini ~2nig~n~i Chironomid larvae
2 4
200 300
171 7 3434
3620 6003
Mean number of organismssample 585 Standard deviation 194
I 2Mean urn b er 0 f organIsms m 502281 Standard deviation 166943
H= 203 SD= 068 SR= 1 20 J= 057
A-23
STATI ON 58 Date 18 June 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (noI 2) Total occurrence
TaKa number (X) X SD
Nellertea 2 100 1717 5430 Nematoda 160 1000 137376 6361 1 Turbellaria 4 400 3434 4434 Oligochaeta 36 1000 3091 0 14705 ~iQQYik~ Q1rQ 4 300 3434 6003 bitnQgl~ebysect YrDsect ~Q[QiY~ ~~nni biQQpoundY1h[ sp ~Q[Qeng ~ilQD Chironomid larvae
3 1 3
61 1
300 100 300
1000 100
2576 859
2576 52375
859
4147 2715 4147
1428 1 2715
Chironollid pupae 1 100 859 271 5
Mean number of organismssample 276 standard deviation 72
nean nurn b er 0 f organIsms I 2 236974 Standard deviation 61410
H = 1 78 SD= 060 SR= 1 23 J= 051
A-24
STATION 55 Date 18 June 1984 Depth 18 m Salinity (bottom)1 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (no 1m2) occurrence
Taxa (X) X SD
Nematoda 160 1000 137376 43967 Turbellaria 1 100 859 271 5 Oligochaeta 61 1000 52375 31985 ~~iQQY~kY~~ int~[mQi~ ~Q[Qipound~l~ m~nini~ biIDnQ~Ylb[s sp
3 3 3
300 300 300
2576 2576 2576
4147 4147 4147
~Q[Q~bi~ ~slIDQni~ Chironomid larvae
85 6
1000 600
72981 5152
34165 4434
Mean number of organismssample 322 Standard deviation 75
2Mean number 0 f organIsms m 276469 Standard deviation 64099
H= 178 5D= 065 SR= 0B4 J= 059
A-25
Frequency Density (no2) occurrence -----------------
Taxa (7) X SD
Nematoda 104 1000 89294 47409 Turbell ar i a 1 100 859 2715 ~~~nQ~sect imni~Q~ tjQQsectQlis flQig~ Oligochaeta
2 1
297
100 100
1000
171 7 859
255004
5430 271 5
146273 ~~i~QYsect~Y~lls ilr2is gQrQi~y~ IDDilDia
24 4
600 300
20606 3434
27212 6003
Ostracoda 2 200 171 7 3620 biDQSy~b~C~ sp M~QYsectisect m~r~~Qi ~QrQeniy QD Harpacticoida
157 1 1 1
900 100 100 100
134800 859 859 859
73197 2715 2715 2715
sectpoundQttQDs SsDQD 113 900 97022 61656
STATION 45 Date 2 July 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) No of samples 10
172 C
Mean number of organismssample 708 Standard deviation 339
M ean num b er f 20 organisms 607889 Standard deviation 290B22
H= 216 SD= 073 SR= 1 27 J= 058
1-26
STATION 18 Date 2 July 1984 Depth 24 WI
Sal inity (bottom) 00 ppt Temperature (bottom) 172 C No of samples 10
--------------------------------~-----------------------------------------Frequency Density (nom2)
Total occurrence Taxa number (7) X SD
Nematoda 202 1000 173437 113532 ~~~nih~sect mnpoundQ~ Oligochleta
4 102
400 1000
3434 87577
4434 54873
~~igQYsect~Y~12 inl~rmgi2 ~Q[~poundYl~ m~ni~nsectisect bimnQpoundylh~[~ Spa
115 4
15
900 300 900
98739 3434
12879
100720 6003 9274
~Q[QQniY~ sect~QDi~ 55 900 47223 40525 Harpacticoida 1 100 859 2715 sectpoundQiiQlD SDg~DEisect Chironomid larvae
2 6
200 400
1717 5152
3620 7240
Hymenoptera 1 100 859 2715 Hydracarina 1 100 859 2715
Mean number of organismssample 508 Standard deviation 253
2Mean num ber 0 f organIsms m 436169 Standard deviation 217580
H= 225 SD= 074 SR= 1 22 J= 063
A-27
STATION 58 Date 2 July 1984 Depth 58 1
Salinity (bottom) 00 ppt Temperature (bottom) IBO C No of samples 10
Frequency Density (no2) Total occurrence
Taxa number ltX) i SD
Nematoda 151 1000 129649 42729 Turbellaria 1 100 859 2715 01 i gochaeta 41 1000 35203 22698 ~~i~e~~~ int~~m~~ 3 200 2576 5795 btbQglYRhY~ Yir~n~ ~e~~ampy mni~niii bimQeamp~tb~ sp ~e~eQhiY ~mQni Chironomid larvae
1 4 2
68 1
100 300 200
1000 100
859 3434 171 7
58385 859
271 5 6003 3620
1557 1 2715
Mean number of organisassample 272 Standard deviation
I 2Mean num ber 0 f organIsms I 233539 Standard deviation 62546
H = 1 69 SD= 061 SR= 099 J= 053
A-28
73
STATION 55 Date 2 July 1984 Depth 15 III
Salinity (bottom) 00 ppt Temperature (bottom) 182 C No of samples 10
Frequency Density (nom2) occurrence
Taxa (X) X SD
Nematoda 184 1()00 157982 5264B Turbellaria 1 100 859 271 5 Oligochaeta ~~iQQ~sect~Y~ll~ n~[~~Qi~ bitnggYQDYsect Yi[~nsect ~QrQipoundM2 m2ni~nsectisect bimnQpoundYn~[2 sp ~QrQQhiM Qni Harpacticoida
91 2 1 B 2
96 2
1000 200 100 500 200
1000 200
78133 171 7 859
6869 171 7
82426 1111
26058 3620 271 5 1890 3620shy
25980 3620
ChirDnomid larvae 5 400 4293 6071 Chironolllid pupae 1 100 859 2715
Mean number of organismssample 393 Standard deviation 53
2t1ean nUllber Df organlsms III 337430 Standard deviatiDn 45080
H= 187 SD= 067 SR= 116 J= 054
A-29
STATION 45 Date 17 Jul y 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (X) X SD
Nematoda 215 1000 184599 45837 ~~n~b~~ imDipoundQ Qe~Qni fllHi2
3 1
300 100
2576 859
4147 2715
Oligochaeta 305 1000 261873 147955 ~~iQQY~k~ in~rm~2i ~Qr~ipoundYl IDniln~i~ Ostracoda
17 1 2
500 100 200
14590 859
171 7
22554 2715 3620
bmnQpound~ihr sp ~QCQQhiY ~lQD~
176 1
1000 100
151114 859
57125 2715
Harpacticoida 4 300 3434 6003 sectQ~~Qn poundnQnai~ Chironomid larvae
91 5
1000 400
78133 4293
61310 6071
Mean number of organismssample 821 Standard deviation 275
M b f 2ean num er 0 organlsms m 70491 1 Standard deviation 236369
H= 215 SD= 073 SR= 114 J= 060
A-30
STATION 18 Date 17 Jul y 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom 203 C No of samples 10
Frequency Density (001 2 Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 339 1000 291065 119140 Turbellaria 3 200 2576 5795 ~~2~b~~ limnipoundQ12Oligochaeta
4 18S
300 1000
3434 161417
6003 89393
~~iQQy~~~ls in~(ID~Qi bim~Qampy~bg(2 Spa
34 16
800 700
29192 1373B
22967 15252
~g(gebi~m ~21mQni2 Harpacticoida
52 3
1000 200
44647 2576
25212 5795
2ampQ11Q1202 ampS02Qg~2i2 Chironomid larvae
18 10
700 700
15455 8586
13904 701 0
Mean number of organi$mssample 667 Standard deviation IBB
H ean nurn b er 1 20 f organIsms m 572686 Standard deviation 161750
H = 1 99 SD= 065 SR= 090 J= 060
A-31
STATION 58 Date 17 July 1984 Depth 55 AI
Salinity (bottom) 00 ppt Temperature (bottom) 197 C No of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nellatoda 173 1000 14853B 66390 Turbellaria 1 100 859 271 5 ~~~n~hu ini~QA Oligochaeta
1 46
100 1000
859 39496
2715 26293
~gipoundQy~~ygl2 in~rJg~i~ b1nQglYRnY~ Yi( Bivalvia
6 2 1
400 200 100
5152 1717 859
8295 3620 271 5
ei~ IDnH~n~i~ 2 200 171 7 3620 Ostracoda 1 100 959 271 5 biIDQHlh~( Spa ~Q(QRbim ~21Qnisect Diptera pupae
1 94
1
100 1000 100
859 80708
859
2715 35332 2715
Heleidae 1arvae 5 500 4293 4525 Chironomid larvae 1 100 859 2715
Mean number of organismssample 335 Standard deviatiDn 113
Mean number of organismsRI2 287631 Standard deviation 97413
H= 1 86 SO= 064 SR= 155 J= 049
A-32
STATION 55 Date 17 July 1984 Depth 18 m Sali nity (bottom) 00 ppt TeAlperature (bottom) 199 C No of samples 10
Frequency Density (nom2 ) occurrence
Taxa (X) x S D
Nematoda 61 1000 52375 33972 Turbellaria 1 100 859 2715 Oligochaeta 24 900 20606 11590 ~~i2QY~k~~1 iOi[2 bimDQ~xlb~r sp ~Q[QQhi~ sectgni~ Chironomid larvae
3 1
38 3
200 100
1000 300
2576 859
32627 2576
5795 2715
19326 4147
Mean number of organismssample 131 standard deviation 54
M b f 2ean num er 0 organIsms 112477 Standard deviation 46757
H= 184 SD= 066 SR= 085 J= 065
bull
A-33
STATION 45 Date 1 August 1984 Depth 58 m Sal i nity (bottoll) 03 ppt Temperature (bottom) 203 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa nUllber (X) X SD
Nematoda 145 1000 124417 52344 Turbellaria 1 100 859 2715 Mmth~sect iHpoundQ~ Q~~Qi ilQ[i9Oligochaeta
5 3
196
500 300
1000
4293 2576
168286
4525 4147
91064 ~igQYsect~~li int9i Ostracoda
2 3
100 300
171 7 2576
5430 4147
bimnQpoundtl sp ~Q[Q2hiY sectlQni~
240 6
1000 600
206064 5152
73526 4434
sectpoundQtQl poundngnai~Helei dae larvae
1862 1
1000 100
1598713 859
966134 271 ~
Mean number of organismssample 2464 Standard deviation 1156
211 ean num ber 0 f organIsms II 2115590 Standard deviation 992518
H= 124 SD= 041 SR= 089 J= 036
A-34
STATION 1S Date 1 August 1984 Depth 24 II
Salinity (bottom) 00 ppt Temperature (bottom) 198 C No of samp I es 10
Frequency Density (nom2) occurrence ---------------- shy
Taxa (X) X S D
Nuertea 1 100 859 2715 Nellatolllorpha 1 100 859 2715 Nematoda 248 1000 212933 108288 Turbellaria 4 400 3434 4434 ~untb~la Hli~g Oligochaeta
4 206
400 1000
3434 176872
4434 75309
~~igQYli~dli i[t~(gi~ ~QtQpound l binQ~ybt2 sp ~2l~bi Q[i ~2tlgtQ(ila tirisect sectpoundQtel poundl9lla Chironomid larvae
10 1
20 205
1 574
9
500 100 800
1000 100
1000 400
8586 859
17172 176013
859 492836
7727
10709 271 5
14021 48104
271 5 150531
13696
Mean number of organismssample 1284 Standard deviation 290
M b f I 2ean nurn er 0 organIsms III 1102442 Standard deviation 2488B5
H= 211 SD= 071 SR= 1 16 J= 057
A-35
STATION 58 Date 1 August 1984 Depth 55 m Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samp 1es 10
Frequency Densi ty _ ltnom2 ) Total occurrence
Taxa number (7) X SD
Nemertea 1 100 859 2715 Nematoda 22 900 18889 15036 Turbellaria 1 100 859 2715 Oligochaeta 19 700 16313 17385 biiQQgl~QhY~ YiCg~~ 2 200 171 7 3620 ~Q[~i~~l~ m2nil~n2i2 ~Q[QehiYm ~lmQni2
4 164
300 1000
3434 140810
6003 103048
Heleidae larvae 8 500 6869 8868
Mean number of organismssample 221 Standard deviation 111
I 2Mean num ber 0 f organIsms m 189751 Standard deviation 95391
H = L 37 SD= 043 SR= 090 J= 046
A-36
STATION 55 Date 1 August 1984 Depth 15 m Salinity (bottoll) 01 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (i ) X SD
Nemertea 1 100 859 2715 Neutoda 122 1000 104749 7394B Turbellaria 4 300 3434 6003 ~~~~~nt~ secte~poundQa~ Oligochaeta
1 118
100 1000
859 101315
2715 61223
~giQgY~k~~l iot~[m~Qi btbQg~2b~ Y[O ~grQipound~ ~nl~ni b~ngpound~tb~[ Spa
3 1 5 1
200 100 500 100
2576 859
4293 859
5795 2715 4525 2715
~Q[QebiYm ~mQoi sect~QttQ~ ~OQOi Heleidae larvae
42 2 2
800 200 100
36061 171 7 171 7
21341 3620 5430
Chironomid larvae 4 400 3434 4434
Mean number of organismssapIe 306 Standard deviation 169
M b f I 2ean nurn er 0 organIsms m 262732 Standard deviation 145101
H = 198 SD= 067 SR= 1 45 J= 054
A-37
~-- --------------~~-------------
STATION 45 Date 17 August 1984 Depth 61 1
Salinity (bottom) 10 ppt Temperature (bottom) 210 C No of samp 1es 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nematoda 240 1000 206064 130213 ~~h~sect limQ tjQ~~Hi~ fQ[i~~ Oligochaeta
31 2
245
400 100
1000
26617 1717
210357
75228 5430
121374 babgglYQbl~ Yi[~sect 1 100 859 2715 Ostracoda 1 100 859 271 5 biQ~xtb~[ Spa ~~Q~~isect ~[pound~Qisect ~Qgebi HQOi
333 2
143
1000 200
1000
28591 4 171 7
1227BO
106553 3620
106860 sectpoundQUg~ poundg~nsectisect 1738 1000 1492247 68441 7
Mean number of organismssample 2736 Standard deviation 944
M b f I 2ean num er 0 organlslls m 2349130 Standard deviation 810600
H= 172 SD= 056 SR= 079 J= 052
A-38
STATION 18 Date 17 August 1984 Depth 27 III
Sal i ni ty (botto) 01 ppt Temperature (bottom) 214 C No of samples 10
Frequency Density (nom 2 ) occurrence
Taxa (X) X SD
Nematoda 186 1000 159700 62468 ~tgt SPa 2 100 171 7 5430 Turbellaria 8 400 6869 8868 ~~ntbg2 imnipoundQ 12 700 10303 11304 Oligochaeta 283 1000 242984 90509 ~~iQQY~~Y~lls inlgtmggisBivalvia
4 1
400 100
3434 859
4434 271 5
~Qt~i~Y nilnsectisectbimnQpoundttbg[s SPa ~QtQQbi~ islmQDi2
1 17
286
100 900
1000
859 14596
245560
271 5 10747 83461
sectpoundetteln poundDsggnsectisect Chironomid larvae
526 4
1000 3Q0
451624 3434
179610 6003
Mean number of organismssapIe 1330 Standard deviation 162
Mean nurn ber I 20 f organIsms m 1141938 Standard deviation 139389
H= 214 SD= 073 SR= 1 06 J= 060
A-39
STATION 58 Date 17 August 1984 Depth 55 II
Salinity (bottom) 01 ppt Temperature (bottom) 220 C ND of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (7) x S D
Nematoda 68 1000 58385 27689 Turbellar i a 4 200 3434 8295 Oligochaeta 19 800 16313 13084 ~~i~Q~k~~l~ in~~[m~i bitUQ9Y2bYa Yi[~na Bivalvia
3 3 4
300 300 300
2576 2576 3434
4147 4147 6003
gQ[QipoundYl~ mnilDa 1 100 859 2715 binQpoundY~[ sp gQ[Q2UY a~mgnia sect~Qtgl~n ~n~~ni
2 338
6
100 1000 400
171 7 290207
5152
5430 56636 7240
Mean number of organismssample 448 Standard deviation 72
W b f 2lean num er 0 organlsms II 384653 Standard deviation 61988
H = 1 27 SD= 041 SR= 1 02 J= 038
A-40
STATION 55 Date 17 August 1984 Depth 18 m Salinity (bottom) 00 ppt Temperature (bottol) 223 C No of samples 10
Frequency Density (nom 2 ) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 291 1000 249853 118104 Turbellaria 1 100 859 2715 M~ntb~ mni~Q Oligochaeta
1 47
100 1000
859 40354
2715 28347
~~iQQ~sectkY~ll int~[m~gi bitbQQ1YSDY Yi(gn Bivalvia
25 12
6
900 500 400
21465 10303 5152
1231 0 18459 7240
~Q~2ipoundY mnil~ni Ostracoda
11 8
400 600
9445 6869
12442 6773
bmnQpoundYb~r~ SPa 52 1000 44647 19746 ~QrQsbY lmgnisectsQiielo snQ~ni~ Chironomid larvae
43 5
15
1000 400 BOO
36920 4293
12879
21436 6071 8344
Mean number of organismssample 517 Standard deviation 174
M b f I 2ean num er 0 organlsms m 443896 Standard deviation 149431
W = 228 SD= 065 SR= 1 33 J= 062
A-41
STATION 45 Date 29 August 1984 Depth 55 III
Salinity (bottom) 07 ppt Temperature (bottom) 199 C No of samples 10
Frequency Density (noI 2) Total occurrence
Taxa number (X) X SD
Nematoda 192 1000 164851 98380 ~sntbsect limnipoundQlDligochaeta
2 198
200 1000
171 7 170003
3620 67339
~Q[eipoundYls msniln~isect Ostracoda
1 4
100 400
859 3434
2715 4434
bimnQpoundytb[s Spa gQ[Qeniy sect21QOi~ sectpoundQttQlsO poundsOsggOi
164 87
2468
1000 1000 1000
140810 74698
2119025
39283 39460
840890
Mean number of organismssample 311 6 Standard deviation 101 1
ill b f 2nean nUll er 0 organIsms 2675398 Standard deviation 8682B8
W= 116 SD= 036 SR= 060 J= 039
A-42
STATION 18 Date 29 August 1984 Depth 30 bull Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samples 10
Total Frequency occurrence
Densi ty 2
(nom )
Taxa number (~ ) x S D
Nematoda 150 1000 128790 28905 Turbellaria 7 400 6010 9096 ~nh imni~Qj Oligochaeta ~~i~2Y~k~~1 ini~CIDgii bih2g~Qb~ Yi(~U2 Bivalvi a
B 145
1 1 2
600 1000
100 100 200
6869 124497
859 859
171 7
677 3 84732
271S 2715 3620
~Q[Qi~yli miDllgni bimn2pound~ih~C sp ~QtQehiY imQUia Harpacticoida
7 7
265 1
500 300
1000 100
6010 601 0
227529 859
8145 10747
139462 2715
sect~QtiQDi ~Q~Q~i~ Chironomid larvae
2471 2
1000 200
2121601 171 7
1063112 3620
Mean number of organismssample 3067 Standard deviation 121 9
2Mean number 0 f organIsms m 2633326 standard deviation 1046718
H = 1 09 SD= 034 SR= 1 04 J= 029
A-43
STATION 58 Date 29 August 1984 Depth 55 111
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (noI 2 ) Total occurrence -----------------
Taxa nUllber (X) X SD
Nemertea 4 400 3434 4434 Nuatoda 64 1000 54950 25016 Turbellaria 9 400 7727 11047 ~Hl~b limli~Q19 Oligochaeta
1 37
100 1000
859 31769
2715 19006
i~Qyh il(~~ bHtlQSlheln Yl Bivalvia
4 4
20
200 300 400
3434 3434
17172
8215 6003
26541 ~e(ijY l bQ~dlH sp
26 1
700 100
22324 859
25662 2715
~Q[QQhil iQ sectjgUell HD Heleidae larvae
418 20
1
1000 800 100
358895 17172
859
129443 12799 271 5
Mean number of organismssample 609 Standard deviation 175
nean num b er 0 f organIsms 1 111 2 522887 Standard deviation 150164
H= 176 SD= 051 SR= 1 30 J= 047
A-44
I I
I
I
STATION SS
Date 29 August 1984 Depth 21 1
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (no2) Total occurrence
Taxa nUllber (X) x S D
Nematoda ISO 1000 128790 37969 Turbellaria 1 100 859 271 5 Oligochaeta 48 1000 41213 16088 ~i~g~sect~~l iQ~~mgi bi~QQg~gb~sect ~i~nsect
10 14
600 600
eSB6 12020
9050 14137
Bivalvia 4 200 3434 7240 ~Q[Q~Yl niQaa Ostracoda
15 7
700 SOO
12879 6010
15806 7069
bmQg~~~b~ SPa 14 800 12020 8295 ~g[gaby mgni sect~g~~Qn ~ngnai Chironomid larvae
IB4 25 9
1000 900 700
157982 21465
7727
35563 16810 6335shy
Mean number of organismssample 481 Standard deviation B6
2Mean number 0 f organlsms m 412987 Standard deviation 74131
H= 24S SD= 074 SR= 1 23 J= 068
A-45
STATION 45 Date 14 September 1984 Depth 61 11
Salinity (bottom) 03 ppt Temperature (bottom) IB4 C No of samples 10
---------------------------------~----------------------------------------
Taxa TotalnUlllDer
Frequency occ~~~ence
Density (no 2) -----X-------sect7B
Nematoda 189 1000 162275 85233 t1tQ SPa
Turbellaria 2 2
200 100
171 7 171 7
3620 5430
~~~nIng limoifQl t1QQQDi~ flQriQ Oligochaeta
5 19
142
400 800
1000
4293 1631 3
121921
6071 12442 30504
~QQifYl mDl~D bimoQpoundt1hgr Spa Cumacea
19 184
2
800 1000 200
1631 3 157982
171 7
130B4 69541 3620
~Q[QnniYm ~~lmQDi Harpacticoida
118 1
1000 100
10131 5 B59
43367 2715
sectfQIIQD fOQgO Chironomid larvae
1780 1
1000 100
1528308 859
673586 2715
Mean number of organismssample 2464 Standard deviation 874
M ean num b er f 20 organlsms 2115590 Standard deviation 750305
H= 151 SD= 046 SR= 1 07 J= 041
A-46
STATION 18 Date 14 September 1984 Depth 21 III
Salinity (bottom) 01 ppt Temperature (botto) 182 C No of samples 10
Frequency DenSity (nom 2 ) Total occurrence ---------------- shy
Taxa nUlDber (i) X SD
Nemertea 1 100 859 271 5 Nematoda 186 1000 159700 44925 Turbellaria 16 400 13738 20717 ~~Dth~~ limni~Ql Oligochaeta
13 55
700 900
11162 47223
9096 30085
~Q~ei~Yl nil~Qi~ 17 900 14596 7069 bimDg~lbg[ Spa b 500 5152 6003 ~Q[Q2niY ~lgQi~ Harpacti coi da
562 2
1000 200
482533 171 7
136766 3620
sectpoundQttQ~Q~ ~n~ni 791 1000 679153 324290
Mean number of organismssample 1649 Standard deviation 447
I 211ean nUll ber 0 f organIsms I 1415831 Standard deviation 384136
H= 179 SD= 064 SR= 084 J= 054
A-47
STATION 58 Date 14 September 1984 Depth 58 III
Salinity (bottom) 01 ppt Temperature (bottom) 191 C No of sampl es 10
-------------------------------------------~------------------------------Frequency Density (nom 2 )
Total occurrence Taxa number eX) X SD
Nemertea 1 100 859 2715 Nematoda 55 1000 47223 18658 Turbellaria 10 500 8586 11448
1 100 859 2715 Oligochaeta 41 1000 35203 17850 ~~iQQ~~gll iu1g[m~i ~Q[Q~Yl nilD bimnQ~Y~h[ Spa ~Q[Q~hiYm lmgui sectpoundQilg1D poundU2D Chironomid larvae
4 10
2 277
23 4
100 500 200
1000 700 300
3434 8586 171 7
237832 19748 3434
10861 11448 3620
50561 21051 6003
Mean number of organismssample 428 Standard deviation 51
M b f 2ean num er 0 organIsms III 367481 Standard deviation 43743
H= 179 SD= 055 SR= 114 J= 052
A-48
I I
STATION SS Date 14 September 1984 Depth 21 II
Salinity (bottom) 01 ppt Temperature (bottom) 190 C No of samples 10
--------------------------------------------------------------------~-----
Frequency Density (no1I2) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 102 1000 87577 39200 Oligochaeta 34 700 29192 31142 ~iQ2Y~y1 int(mgi~ bithQgl~en~ Yi(gDsect ~Q(~i~Y m~DilgDsecti~ bimDQamp~1h(sect sp ~2(QQhiY slmQD 2poundQiiQlsD ~sD~g~nsecti Chironomid larvae
36 18 16 17
100 16
3
1000 600 800 700
1000 800 300
30910 15455 13738 14596 85860 13738 2576
157BO 20953 10078 14621 32126 10861 4147
Mean number of organismssample 342 Standard deviation 97
2Mean nUllber 0 f organlsms m 293641 Standard deviation 83617
H= 262 SD= 079 SR= 095 J= 083
A-49
Appendix B--Sediment particle size and organic content of the Cathlamet Bay
benthic invertebrate sites 13 March through 14 September
1984
iii
1
Station 18a 48 54 57
Survey 1 1 1 1
Month March March March March
Day 13 13 13 13
Particle size (mm) Phib Percent by weight
gt 40 -2 000 000 000
20- 40 -1 000 000 000
10- 20 0 000 009 000
05- 10 1 018 1079 032
025- 050 2 545 7583 2468
0125- 025 3 8731 1225 6783
00625-0125 4 491 037 657
lt0625 (5-12) 216 067 060
Organic Content 160 116 128
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
b Phi= -log2(sediment particle diameter in mm)
B-1
Station 18a 48 54 57
Survey 2 2 2 2
Month April April April April
Day 5 5 5 5
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 003 093 000
05shy 10 1 005 31 75 023
025shy 050 2 087 5904 2368
0125- 025 3 6316 750 7155
00625-0125 4 3056 026 427
lt0625 (5-12) 533 052 028
Organic Content 081 077 065
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-2
Station 45 55 58
Survey 3 3 3 3
Month April April April April
Day 18 18 18 18
Particle size (mm)
gt 40
Phi
-2
Percent by weight
000 000 000
20shy 40 -1 000 000 000
10shy 20 0 005 009 004
05shy 10 1 010 027 013
025shy 050 2 015 095 225
0125- 025 3 097 536 6111
00625-0125 4 453 2821 2205
lt0625 (5-12) 9420 6511 1442
Organic Content 31 42 14
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-3
Station 18a 45 55 58
Survey 4 4 4 4
Month May May May May
Day 4 4 4 4
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 021
05shy 10 1 000 065 063
025shy 050 2 012 370 230
0125- 025 3 091 4099 4696
00625-0125 4 322 3650 3052
lt0625 (5-12) 9575 1810 1939
Organic Content 330 180 160
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-4
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
5
May
17
000
000
005
016
217
5862
2729
1170
100
45 55 58
5 5 5
May May May
17 17 17
Percent by weight
000 000
000 000
005 008
113 031
325 274
1903 5613
2784 2401
4870 1672
240 110
000
000
000
010
020
079
397
9494
390
B-5
Station 18al 45 55 58
Survey 6 6 6 6
Month June June June June
Day 6 6 6 6
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 020
05shy 10 1 005 051 027
025shy 050 2 005 301 1 79
0125- 025 3 074 3189 5404
00625-0125 4 599 4118 2885
lt0625 (5-12) 9317 2332 1485
Organic Content 340 240 150
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-6
Station
Survey
Month
Day
Particle size Cmm) Phi
gt 40 -2
20shy 40 -1
10shy 20 a
05shy 10 1
025shy 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
7
June
18
000
000
005
029
138
3917
4143
1768
180
45
7
June
18
55 58
7 7
June June
18 18
Percent by weight
000
000
000
010
020
080
427
9464
310
000 000
000 000
000 007
011 022
057 190
957 5286
3023 2642
5957 1853
1 70 110
B-7
Station 18al 45 55 58
Survey 8 8 8 8
Month July July July July
Day 2 2 2 2
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 006 002 006
05shy 10 1 006 0l3 023
025shy 050 2 017 088 171
0125- 025 3 074 2712 5365
00625-0125 4 552 3892 3081
lt0625 (5-12) 9345 3294 l354
Organic Content 410 210 160
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-8
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
9
July
17
000
000
003
013
130
4294
4434
1127
130
45
9
July
17
Percent
000
000
000
006
012
051
046
9885
290
55
9
July
17
by weight
000
000
019
048
091
628
3616
5597
030
58
9
July
17
000
000
004
022
158
5017
3148
1650
140
B-9
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18al
10
August
1
45
10
August
1
55
10
August
1
58
10
August
1
Percent by weight
000 000
000 004
001 004
009 018
018 088
098 306
049 2510
9824 7070
000
005
045
763
3604
4495
932
156
100 190 060
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-10
Station 18 45 55 58
Survey 11 11 11 11
Month August August August August
Day 17 17 17 17
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000 000
20- 40 -1 005 000 000 000
10- 20 0 021 003 000 210
05- 10 1 064 009 000 159
025- 050 2 226 027 045 2656
0125- 025 3 3259 131 712 3719
00625-0125 4 4327 195 1737 1159
lt0625 (5-12) 2098 9635 7506 2097
Organic Content 210 300 160 100
Ii I
B-11
Station
Survey
Month
Day
Particle size (mm) Phi
gt40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
12
August
29
000
000
012
046
186
3465
4498
17 93
241
45
12
August
29
55 58
12 12
August August
29 29
Percent by weight
000
000
002
009
026
118
189
9656
540
000 000
000 000
003 011
011 028
055 1013
859 5033
1596 1827
7476 2089
1 70 120
B-12
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
_-------------------- shy
B-13
STATION 18 Date 18 June 1984 Depth 34 m Salinity (bottom) 00 ppt Temperature (bottom) 155 C No of samples 10
Frequency Density (nom 2) Total occurrence ----------------shy
Taxa nUlber (Z) X SD
Neutoda 291 1000 249853 138826 Turbellaria 1 100 859 2715 ~~n~~nki~ sectQ~~iQ~2 ~g~ntbg2 limni~Q9 Oligochaeta
1 3
123
100 300
1000
859 2576
105608
271 5 4147
48240 ~~igQY~~~~9 int~(mgii ~Q[~i~~~ mini~ni bimnQ~ylbg(~ Spa
67 6 5
1000 500 400
57526 5152 4293
40485 6003 6071
~Q(QebiYm ~imQnisect Harpacticoida
80 2
1000 200
68688 171 7
41276 3620
sect~QttQini ~2nig~n~i Chironomid larvae
2 4
200 300
171 7 3434
3620 6003
Mean number of organismssample 585 Standard deviation 194
I 2Mean urn b er 0 f organIsms m 502281 Standard deviation 166943
H= 203 SD= 068 SR= 1 20 J= 057
A-23
STATI ON 58 Date 18 June 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (noI 2) Total occurrence
TaKa number (X) X SD
Nellertea 2 100 1717 5430 Nematoda 160 1000 137376 6361 1 Turbellaria 4 400 3434 4434 Oligochaeta 36 1000 3091 0 14705 ~iQQYik~ Q1rQ 4 300 3434 6003 bitnQgl~ebysect YrDsect ~Q[QiY~ ~~nni biQQpoundY1h[ sp ~Q[Qeng ~ilQD Chironomid larvae
3 1 3
61 1
300 100 300
1000 100
2576 859
2576 52375
859
4147 2715 4147
1428 1 2715
Chironollid pupae 1 100 859 271 5
Mean number of organismssample 276 standard deviation 72
nean nurn b er 0 f organIsms I 2 236974 Standard deviation 61410
H = 1 78 SD= 060 SR= 1 23 J= 051
A-24
STATION 55 Date 18 June 1984 Depth 18 m Salinity (bottom)1 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (no 1m2) occurrence
Taxa (X) X SD
Nematoda 160 1000 137376 43967 Turbellaria 1 100 859 271 5 Oligochaeta 61 1000 52375 31985 ~~iQQY~kY~~ int~[mQi~ ~Q[Qipound~l~ m~nini~ biIDnQ~Ylb[s sp
3 3 3
300 300 300
2576 2576 2576
4147 4147 4147
~Q[Q~bi~ ~slIDQni~ Chironomid larvae
85 6
1000 600
72981 5152
34165 4434
Mean number of organismssample 322 Standard deviation 75
2Mean number 0 f organIsms m 276469 Standard deviation 64099
H= 178 5D= 065 SR= 0B4 J= 059
A-25
Frequency Density (no2) occurrence -----------------
Taxa (7) X SD
Nematoda 104 1000 89294 47409 Turbell ar i a 1 100 859 2715 ~~~nQ~sect imni~Q~ tjQQsectQlis flQig~ Oligochaeta
2 1
297
100 100
1000
171 7 859
255004
5430 271 5
146273 ~~i~QYsect~Y~lls ilr2is gQrQi~y~ IDDilDia
24 4
600 300
20606 3434
27212 6003
Ostracoda 2 200 171 7 3620 biDQSy~b~C~ sp M~QYsectisect m~r~~Qi ~QrQeniy QD Harpacticoida
157 1 1 1
900 100 100 100
134800 859 859 859
73197 2715 2715 2715
sectpoundQttQDs SsDQD 113 900 97022 61656
STATION 45 Date 2 July 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) No of samples 10
172 C
Mean number of organismssample 708 Standard deviation 339
M ean num b er f 20 organisms 607889 Standard deviation 290B22
H= 216 SD= 073 SR= 1 27 J= 058
1-26
STATION 18 Date 2 July 1984 Depth 24 WI
Sal inity (bottom) 00 ppt Temperature (bottom) 172 C No of samples 10
--------------------------------~-----------------------------------------Frequency Density (nom2)
Total occurrence Taxa number (7) X SD
Nematoda 202 1000 173437 113532 ~~~nih~sect mnpoundQ~ Oligochleta
4 102
400 1000
3434 87577
4434 54873
~~igQYsect~Y~12 inl~rmgi2 ~Q[~poundYl~ m~ni~nsectisect bimnQpoundylh~[~ Spa
115 4
15
900 300 900
98739 3434
12879
100720 6003 9274
~Q[QQniY~ sect~QDi~ 55 900 47223 40525 Harpacticoida 1 100 859 2715 sectpoundQiiQlD SDg~DEisect Chironomid larvae
2 6
200 400
1717 5152
3620 7240
Hymenoptera 1 100 859 2715 Hydracarina 1 100 859 2715
Mean number of organismssample 508 Standard deviation 253
2Mean num ber 0 f organIsms m 436169 Standard deviation 217580
H= 225 SD= 074 SR= 1 22 J= 063
A-27
STATION 58 Date 2 July 1984 Depth 58 1
Salinity (bottom) 00 ppt Temperature (bottom) IBO C No of samples 10
Frequency Density (no2) Total occurrence
Taxa number ltX) i SD
Nematoda 151 1000 129649 42729 Turbellaria 1 100 859 2715 01 i gochaeta 41 1000 35203 22698 ~~i~e~~~ int~~m~~ 3 200 2576 5795 btbQglYRhY~ Yir~n~ ~e~~ampy mni~niii bimQeamp~tb~ sp ~e~eQhiY ~mQni Chironomid larvae
1 4 2
68 1
100 300 200
1000 100
859 3434 171 7
58385 859
271 5 6003 3620
1557 1 2715
Mean number of organisassample 272 Standard deviation
I 2Mean num ber 0 f organIsms I 233539 Standard deviation 62546
H = 1 69 SD= 061 SR= 099 J= 053
A-28
73
STATION 55 Date 2 July 1984 Depth 15 III
Salinity (bottom) 00 ppt Temperature (bottom) 182 C No of samples 10
Frequency Density (nom2) occurrence
Taxa (X) X SD
Nematoda 184 1()00 157982 5264B Turbellaria 1 100 859 271 5 Oligochaeta ~~iQQ~sect~Y~ll~ n~[~~Qi~ bitnggYQDYsect Yi[~nsect ~QrQipoundM2 m2ni~nsectisect bimnQpoundYn~[2 sp ~QrQQhiM Qni Harpacticoida
91 2 1 B 2
96 2
1000 200 100 500 200
1000 200
78133 171 7 859
6869 171 7
82426 1111
26058 3620 271 5 1890 3620shy
25980 3620
ChirDnomid larvae 5 400 4293 6071 Chironolllid pupae 1 100 859 2715
Mean number of organismssample 393 Standard deviation 53
2t1ean nUllber Df organlsms III 337430 Standard deviatiDn 45080
H= 187 SD= 067 SR= 116 J= 054
A-29
STATION 45 Date 17 Jul y 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (X) X SD
Nematoda 215 1000 184599 45837 ~~n~b~~ imDipoundQ Qe~Qni fllHi2
3 1
300 100
2576 859
4147 2715
Oligochaeta 305 1000 261873 147955 ~~iQQY~k~ in~rm~2i ~Qr~ipoundYl IDniln~i~ Ostracoda
17 1 2
500 100 200
14590 859
171 7
22554 2715 3620
bmnQpound~ihr sp ~QCQQhiY ~lQD~
176 1
1000 100
151114 859
57125 2715
Harpacticoida 4 300 3434 6003 sectQ~~Qn poundnQnai~ Chironomid larvae
91 5
1000 400
78133 4293
61310 6071
Mean number of organismssample 821 Standard deviation 275
M b f 2ean num er 0 organlsms m 70491 1 Standard deviation 236369
H= 215 SD= 073 SR= 114 J= 060
A-30
STATION 18 Date 17 Jul y 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom 203 C No of samples 10
Frequency Density (001 2 Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 339 1000 291065 119140 Turbellaria 3 200 2576 5795 ~~2~b~~ limnipoundQ12Oligochaeta
4 18S
300 1000
3434 161417
6003 89393
~~iQQy~~~ls in~(ID~Qi bim~Qampy~bg(2 Spa
34 16
800 700
29192 1373B
22967 15252
~g(gebi~m ~21mQni2 Harpacticoida
52 3
1000 200
44647 2576
25212 5795
2ampQ11Q1202 ampS02Qg~2i2 Chironomid larvae
18 10
700 700
15455 8586
13904 701 0
Mean number of organi$mssample 667 Standard deviation IBB
H ean nurn b er 1 20 f organIsms m 572686 Standard deviation 161750
H = 1 99 SD= 065 SR= 090 J= 060
A-31
STATION 58 Date 17 July 1984 Depth 55 AI
Salinity (bottom) 00 ppt Temperature (bottom) 197 C No of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nellatoda 173 1000 14853B 66390 Turbellaria 1 100 859 271 5 ~~~n~hu ini~QA Oligochaeta
1 46
100 1000
859 39496
2715 26293
~gipoundQy~~ygl2 in~rJg~i~ b1nQglYRnY~ Yi( Bivalvia
6 2 1
400 200 100
5152 1717 859
8295 3620 271 5
ei~ IDnH~n~i~ 2 200 171 7 3620 Ostracoda 1 100 959 271 5 biIDQHlh~( Spa ~Q(QRbim ~21Qnisect Diptera pupae
1 94
1
100 1000 100
859 80708
859
2715 35332 2715
Heleidae 1arvae 5 500 4293 4525 Chironomid larvae 1 100 859 2715
Mean number of organismssample 335 Standard deviatiDn 113
Mean number of organismsRI2 287631 Standard deviation 97413
H= 1 86 SO= 064 SR= 155 J= 049
A-32
STATION 55 Date 17 July 1984 Depth 18 m Sali nity (bottom) 00 ppt TeAlperature (bottom) 199 C No of samples 10
Frequency Density (nom2 ) occurrence
Taxa (X) x S D
Nematoda 61 1000 52375 33972 Turbellaria 1 100 859 2715 Oligochaeta 24 900 20606 11590 ~~i2QY~k~~1 iOi[2 bimDQ~xlb~r sp ~Q[QQhi~ sectgni~ Chironomid larvae
3 1
38 3
200 100
1000 300
2576 859
32627 2576
5795 2715
19326 4147
Mean number of organismssample 131 standard deviation 54
M b f 2ean num er 0 organIsms 112477 Standard deviation 46757
H= 184 SD= 066 SR= 085 J= 065
bull
A-33
STATION 45 Date 1 August 1984 Depth 58 m Sal i nity (bottoll) 03 ppt Temperature (bottom) 203 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa nUllber (X) X SD
Nematoda 145 1000 124417 52344 Turbellaria 1 100 859 2715 Mmth~sect iHpoundQ~ Q~~Qi ilQ[i9Oligochaeta
5 3
196
500 300
1000
4293 2576
168286
4525 4147
91064 ~igQYsect~~li int9i Ostracoda
2 3
100 300
171 7 2576
5430 4147
bimnQpoundtl sp ~Q[Q2hiY sectlQni~
240 6
1000 600
206064 5152
73526 4434
sectpoundQtQl poundngnai~Helei dae larvae
1862 1
1000 100
1598713 859
966134 271 ~
Mean number of organismssample 2464 Standard deviation 1156
211 ean num ber 0 f organIsms II 2115590 Standard deviation 992518
H= 124 SD= 041 SR= 089 J= 036
A-34
STATION 1S Date 1 August 1984 Depth 24 II
Salinity (bottom) 00 ppt Temperature (bottom) 198 C No of samp I es 10
Frequency Density (nom2) occurrence ---------------- shy
Taxa (X) X S D
Nuertea 1 100 859 2715 Nellatolllorpha 1 100 859 2715 Nematoda 248 1000 212933 108288 Turbellaria 4 400 3434 4434 ~untb~la Hli~g Oligochaeta
4 206
400 1000
3434 176872
4434 75309
~~igQYli~dli i[t~(gi~ ~QtQpound l binQ~ybt2 sp ~2l~bi Q[i ~2tlgtQ(ila tirisect sectpoundQtel poundl9lla Chironomid larvae
10 1
20 205
1 574
9
500 100 800
1000 100
1000 400
8586 859
17172 176013
859 492836
7727
10709 271 5
14021 48104
271 5 150531
13696
Mean number of organismssample 1284 Standard deviation 290
M b f I 2ean nurn er 0 organIsms III 1102442 Standard deviation 2488B5
H= 211 SD= 071 SR= 1 16 J= 057
A-35
STATION 58 Date 1 August 1984 Depth 55 m Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samp 1es 10
Frequency Densi ty _ ltnom2 ) Total occurrence
Taxa number (7) X SD
Nemertea 1 100 859 2715 Nematoda 22 900 18889 15036 Turbellaria 1 100 859 2715 Oligochaeta 19 700 16313 17385 biiQQgl~QhY~ YiCg~~ 2 200 171 7 3620 ~Q[~i~~l~ m2nil~n2i2 ~Q[QehiYm ~lmQni2
4 164
300 1000
3434 140810
6003 103048
Heleidae larvae 8 500 6869 8868
Mean number of organismssample 221 Standard deviation 111
I 2Mean num ber 0 f organIsms m 189751 Standard deviation 95391
H = L 37 SD= 043 SR= 090 J= 046
A-36
STATION 55 Date 1 August 1984 Depth 15 m Salinity (bottoll) 01 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (i ) X SD
Nemertea 1 100 859 2715 Neutoda 122 1000 104749 7394B Turbellaria 4 300 3434 6003 ~~~~~nt~ secte~poundQa~ Oligochaeta
1 118
100 1000
859 101315
2715 61223
~giQgY~k~~l iot~[m~Qi btbQg~2b~ Y[O ~grQipound~ ~nl~ni b~ngpound~tb~[ Spa
3 1 5 1
200 100 500 100
2576 859
4293 859
5795 2715 4525 2715
~Q[QebiYm ~mQoi sect~QttQ~ ~OQOi Heleidae larvae
42 2 2
800 200 100
36061 171 7 171 7
21341 3620 5430
Chironomid larvae 4 400 3434 4434
Mean number of organismssapIe 306 Standard deviation 169
M b f I 2ean nurn er 0 organIsms m 262732 Standard deviation 145101
H = 198 SD= 067 SR= 1 45 J= 054
A-37
~-- --------------~~-------------
STATION 45 Date 17 August 1984 Depth 61 1
Salinity (bottom) 10 ppt Temperature (bottom) 210 C No of samp 1es 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nematoda 240 1000 206064 130213 ~~h~sect limQ tjQ~~Hi~ fQ[i~~ Oligochaeta
31 2
245
400 100
1000
26617 1717
210357
75228 5430
121374 babgglYQbl~ Yi[~sect 1 100 859 2715 Ostracoda 1 100 859 271 5 biQ~xtb~[ Spa ~~Q~~isect ~[pound~Qisect ~Qgebi HQOi
333 2
143
1000 200
1000
28591 4 171 7
1227BO
106553 3620
106860 sectpoundQUg~ poundg~nsectisect 1738 1000 1492247 68441 7
Mean number of organismssample 2736 Standard deviation 944
M b f I 2ean num er 0 organlslls m 2349130 Standard deviation 810600
H= 172 SD= 056 SR= 079 J= 052
A-38
STATION 18 Date 17 August 1984 Depth 27 III
Sal i ni ty (botto) 01 ppt Temperature (bottom) 214 C No of samples 10
Frequency Density (nom 2 ) occurrence
Taxa (X) X SD
Nematoda 186 1000 159700 62468 ~tgt SPa 2 100 171 7 5430 Turbellaria 8 400 6869 8868 ~~ntbg2 imnipoundQ 12 700 10303 11304 Oligochaeta 283 1000 242984 90509 ~~iQQY~~Y~lls inlgtmggisBivalvia
4 1
400 100
3434 859
4434 271 5
~Qt~i~Y nilnsectisectbimnQpoundttbg[s SPa ~QtQQbi~ islmQDi2
1 17
286
100 900
1000
859 14596
245560
271 5 10747 83461
sectpoundetteln poundDsggnsectisect Chironomid larvae
526 4
1000 3Q0
451624 3434
179610 6003
Mean number of organismssapIe 1330 Standard deviation 162
Mean nurn ber I 20 f organIsms m 1141938 Standard deviation 139389
H= 214 SD= 073 SR= 1 06 J= 060
A-39
STATION 58 Date 17 August 1984 Depth 55 II
Salinity (bottom) 01 ppt Temperature (bottom) 220 C ND of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (7) x S D
Nematoda 68 1000 58385 27689 Turbellar i a 4 200 3434 8295 Oligochaeta 19 800 16313 13084 ~~i~Q~k~~l~ in~~[m~i bitUQ9Y2bYa Yi[~na Bivalvia
3 3 4
300 300 300
2576 2576 3434
4147 4147 6003
gQ[QipoundYl~ mnilDa 1 100 859 2715 binQpoundY~[ sp gQ[Q2UY a~mgnia sect~Qtgl~n ~n~~ni
2 338
6
100 1000 400
171 7 290207
5152
5430 56636 7240
Mean number of organismssample 448 Standard deviation 72
W b f 2lean num er 0 organlsms II 384653 Standard deviation 61988
H = 1 27 SD= 041 SR= 1 02 J= 038
A-40
STATION 55 Date 17 August 1984 Depth 18 m Salinity (bottom) 00 ppt Temperature (bottol) 223 C No of samples 10
Frequency Density (nom 2 ) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 291 1000 249853 118104 Turbellaria 1 100 859 2715 M~ntb~ mni~Q Oligochaeta
1 47
100 1000
859 40354
2715 28347
~~iQQ~sectkY~ll int~[m~gi bitbQQ1YSDY Yi(gn Bivalvia
25 12
6
900 500 400
21465 10303 5152
1231 0 18459 7240
~Q~2ipoundY mnil~ni Ostracoda
11 8
400 600
9445 6869
12442 6773
bmnQpoundYb~r~ SPa 52 1000 44647 19746 ~QrQsbY lmgnisectsQiielo snQ~ni~ Chironomid larvae
43 5
15
1000 400 BOO
36920 4293
12879
21436 6071 8344
Mean number of organismssample 517 Standard deviation 174
M b f I 2ean num er 0 organlsms m 443896 Standard deviation 149431
W = 228 SD= 065 SR= 1 33 J= 062
A-41
STATION 45 Date 29 August 1984 Depth 55 III
Salinity (bottom) 07 ppt Temperature (bottom) 199 C No of samples 10
Frequency Density (noI 2) Total occurrence
Taxa number (X) X SD
Nematoda 192 1000 164851 98380 ~sntbsect limnipoundQlDligochaeta
2 198
200 1000
171 7 170003
3620 67339
~Q[eipoundYls msniln~isect Ostracoda
1 4
100 400
859 3434
2715 4434
bimnQpoundytb[s Spa gQ[Qeniy sect21QOi~ sectpoundQttQlsO poundsOsggOi
164 87
2468
1000 1000 1000
140810 74698
2119025
39283 39460
840890
Mean number of organismssample 311 6 Standard deviation 101 1
ill b f 2nean nUll er 0 organIsms 2675398 Standard deviation 8682B8
W= 116 SD= 036 SR= 060 J= 039
A-42
STATION 18 Date 29 August 1984 Depth 30 bull Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samples 10
Total Frequency occurrence
Densi ty 2
(nom )
Taxa number (~ ) x S D
Nematoda 150 1000 128790 28905 Turbellaria 7 400 6010 9096 ~nh imni~Qj Oligochaeta ~~i~2Y~k~~1 ini~CIDgii bih2g~Qb~ Yi(~U2 Bivalvi a
B 145
1 1 2
600 1000
100 100 200
6869 124497
859 859
171 7
677 3 84732
271S 2715 3620
~Q[Qi~yli miDllgni bimn2pound~ih~C sp ~QtQehiY imQUia Harpacticoida
7 7
265 1
500 300
1000 100
6010 601 0
227529 859
8145 10747
139462 2715
sect~QtiQDi ~Q~Q~i~ Chironomid larvae
2471 2
1000 200
2121601 171 7
1063112 3620
Mean number of organismssample 3067 Standard deviation 121 9
2Mean number 0 f organIsms m 2633326 standard deviation 1046718
H = 1 09 SD= 034 SR= 1 04 J= 029
A-43
STATION 58 Date 29 August 1984 Depth 55 111
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (noI 2 ) Total occurrence -----------------
Taxa nUllber (X) X SD
Nemertea 4 400 3434 4434 Nuatoda 64 1000 54950 25016 Turbellaria 9 400 7727 11047 ~Hl~b limli~Q19 Oligochaeta
1 37
100 1000
859 31769
2715 19006
i~Qyh il(~~ bHtlQSlheln Yl Bivalvia
4 4
20
200 300 400
3434 3434
17172
8215 6003
26541 ~e(ijY l bQ~dlH sp
26 1
700 100
22324 859
25662 2715
~Q[QQhil iQ sectjgUell HD Heleidae larvae
418 20
1
1000 800 100
358895 17172
859
129443 12799 271 5
Mean number of organismssample 609 Standard deviation 175
nean num b er 0 f organIsms 1 111 2 522887 Standard deviation 150164
H= 176 SD= 051 SR= 1 30 J= 047
A-44
I I
I
I
STATION SS
Date 29 August 1984 Depth 21 1
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (no2) Total occurrence
Taxa nUllber (X) x S D
Nematoda ISO 1000 128790 37969 Turbellaria 1 100 859 271 5 Oligochaeta 48 1000 41213 16088 ~i~g~sect~~l iQ~~mgi bi~QQg~gb~sect ~i~nsect
10 14
600 600
eSB6 12020
9050 14137
Bivalvia 4 200 3434 7240 ~Q[Q~Yl niQaa Ostracoda
15 7
700 SOO
12879 6010
15806 7069
bmQg~~~b~ SPa 14 800 12020 8295 ~g[gaby mgni sect~g~~Qn ~ngnai Chironomid larvae
IB4 25 9
1000 900 700
157982 21465
7727
35563 16810 6335shy
Mean number of organismssample 481 Standard deviation B6
2Mean number 0 f organlsms m 412987 Standard deviation 74131
H= 24S SD= 074 SR= 1 23 J= 068
A-45
STATION 45 Date 14 September 1984 Depth 61 11
Salinity (bottom) 03 ppt Temperature (bottom) IB4 C No of samples 10
---------------------------------~----------------------------------------
Taxa TotalnUlllDer
Frequency occ~~~ence
Density (no 2) -----X-------sect7B
Nematoda 189 1000 162275 85233 t1tQ SPa
Turbellaria 2 2
200 100
171 7 171 7
3620 5430
~~~nIng limoifQl t1QQQDi~ flQriQ Oligochaeta
5 19
142
400 800
1000
4293 1631 3
121921
6071 12442 30504
~QQifYl mDl~D bimoQpoundt1hgr Spa Cumacea
19 184
2
800 1000 200
1631 3 157982
171 7
130B4 69541 3620
~Q[QnniYm ~~lmQDi Harpacticoida
118 1
1000 100
10131 5 B59
43367 2715
sectfQIIQD fOQgO Chironomid larvae
1780 1
1000 100
1528308 859
673586 2715
Mean number of organismssample 2464 Standard deviation 874
M ean num b er f 20 organlsms 2115590 Standard deviation 750305
H= 151 SD= 046 SR= 1 07 J= 041
A-46
STATION 18 Date 14 September 1984 Depth 21 III
Salinity (bottom) 01 ppt Temperature (botto) 182 C No of samples 10
Frequency DenSity (nom 2 ) Total occurrence ---------------- shy
Taxa nUlDber (i) X SD
Nemertea 1 100 859 271 5 Nematoda 186 1000 159700 44925 Turbellaria 16 400 13738 20717 ~~Dth~~ limni~Ql Oligochaeta
13 55
700 900
11162 47223
9096 30085
~Q~ei~Yl nil~Qi~ 17 900 14596 7069 bimDg~lbg[ Spa b 500 5152 6003 ~Q[Q2niY ~lgQi~ Harpacti coi da
562 2
1000 200
482533 171 7
136766 3620
sectpoundQttQ~Q~ ~n~ni 791 1000 679153 324290
Mean number of organismssample 1649 Standard deviation 447
I 211ean nUll ber 0 f organIsms I 1415831 Standard deviation 384136
H= 179 SD= 064 SR= 084 J= 054
A-47
STATION 58 Date 14 September 1984 Depth 58 III
Salinity (bottom) 01 ppt Temperature (bottom) 191 C No of sampl es 10
-------------------------------------------~------------------------------Frequency Density (nom 2 )
Total occurrence Taxa number eX) X SD
Nemertea 1 100 859 2715 Nematoda 55 1000 47223 18658 Turbellaria 10 500 8586 11448
1 100 859 2715 Oligochaeta 41 1000 35203 17850 ~~iQQ~~gll iu1g[m~i ~Q[Q~Yl nilD bimnQ~Y~h[ Spa ~Q[Q~hiYm lmgui sectpoundQilg1D poundU2D Chironomid larvae
4 10
2 277
23 4
100 500 200
1000 700 300
3434 8586 171 7
237832 19748 3434
10861 11448 3620
50561 21051 6003
Mean number of organismssample 428 Standard deviation 51
M b f 2ean num er 0 organIsms III 367481 Standard deviation 43743
H= 179 SD= 055 SR= 114 J= 052
A-48
I I
STATION SS Date 14 September 1984 Depth 21 II
Salinity (bottom) 01 ppt Temperature (bottom) 190 C No of samples 10
--------------------------------------------------------------------~-----
Frequency Density (no1I2) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 102 1000 87577 39200 Oligochaeta 34 700 29192 31142 ~iQ2Y~y1 int(mgi~ bithQgl~en~ Yi(gDsect ~Q(~i~Y m~DilgDsecti~ bimDQamp~1h(sect sp ~2(QQhiY slmQD 2poundQiiQlsD ~sD~g~nsecti Chironomid larvae
36 18 16 17
100 16
3
1000 600 800 700
1000 800 300
30910 15455 13738 14596 85860 13738 2576
157BO 20953 10078 14621 32126 10861 4147
Mean number of organismssample 342 Standard deviation 97
2Mean nUllber 0 f organlsms m 293641 Standard deviation 83617
H= 262 SD= 079 SR= 095 J= 083
A-49
Appendix B--Sediment particle size and organic content of the Cathlamet Bay
benthic invertebrate sites 13 March through 14 September
1984
iii
1
Station 18a 48 54 57
Survey 1 1 1 1
Month March March March March
Day 13 13 13 13
Particle size (mm) Phib Percent by weight
gt 40 -2 000 000 000
20- 40 -1 000 000 000
10- 20 0 000 009 000
05- 10 1 018 1079 032
025- 050 2 545 7583 2468
0125- 025 3 8731 1225 6783
00625-0125 4 491 037 657
lt0625 (5-12) 216 067 060
Organic Content 160 116 128
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
b Phi= -log2(sediment particle diameter in mm)
B-1
Station 18a 48 54 57
Survey 2 2 2 2
Month April April April April
Day 5 5 5 5
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 003 093 000
05shy 10 1 005 31 75 023
025shy 050 2 087 5904 2368
0125- 025 3 6316 750 7155
00625-0125 4 3056 026 427
lt0625 (5-12) 533 052 028
Organic Content 081 077 065
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-2
Station 45 55 58
Survey 3 3 3 3
Month April April April April
Day 18 18 18 18
Particle size (mm)
gt 40
Phi
-2
Percent by weight
000 000 000
20shy 40 -1 000 000 000
10shy 20 0 005 009 004
05shy 10 1 010 027 013
025shy 050 2 015 095 225
0125- 025 3 097 536 6111
00625-0125 4 453 2821 2205
lt0625 (5-12) 9420 6511 1442
Organic Content 31 42 14
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-3
Station 18a 45 55 58
Survey 4 4 4 4
Month May May May May
Day 4 4 4 4
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 021
05shy 10 1 000 065 063
025shy 050 2 012 370 230
0125- 025 3 091 4099 4696
00625-0125 4 322 3650 3052
lt0625 (5-12) 9575 1810 1939
Organic Content 330 180 160
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-4
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
5
May
17
000
000
005
016
217
5862
2729
1170
100
45 55 58
5 5 5
May May May
17 17 17
Percent by weight
000 000
000 000
005 008
113 031
325 274
1903 5613
2784 2401
4870 1672
240 110
000
000
000
010
020
079
397
9494
390
B-5
Station 18al 45 55 58
Survey 6 6 6 6
Month June June June June
Day 6 6 6 6
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 020
05shy 10 1 005 051 027
025shy 050 2 005 301 1 79
0125- 025 3 074 3189 5404
00625-0125 4 599 4118 2885
lt0625 (5-12) 9317 2332 1485
Organic Content 340 240 150
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-6
Station
Survey
Month
Day
Particle size Cmm) Phi
gt 40 -2
20shy 40 -1
10shy 20 a
05shy 10 1
025shy 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
7
June
18
000
000
005
029
138
3917
4143
1768
180
45
7
June
18
55 58
7 7
June June
18 18
Percent by weight
000
000
000
010
020
080
427
9464
310
000 000
000 000
000 007
011 022
057 190
957 5286
3023 2642
5957 1853
1 70 110
B-7
Station 18al 45 55 58
Survey 8 8 8 8
Month July July July July
Day 2 2 2 2
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 006 002 006
05shy 10 1 006 0l3 023
025shy 050 2 017 088 171
0125- 025 3 074 2712 5365
00625-0125 4 552 3892 3081
lt0625 (5-12) 9345 3294 l354
Organic Content 410 210 160
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-8
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
9
July
17
000
000
003
013
130
4294
4434
1127
130
45
9
July
17
Percent
000
000
000
006
012
051
046
9885
290
55
9
July
17
by weight
000
000
019
048
091
628
3616
5597
030
58
9
July
17
000
000
004
022
158
5017
3148
1650
140
B-9
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18al
10
August
1
45
10
August
1
55
10
August
1
58
10
August
1
Percent by weight
000 000
000 004
001 004
009 018
018 088
098 306
049 2510
9824 7070
000
005
045
763
3604
4495
932
156
100 190 060
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-10
Station 18 45 55 58
Survey 11 11 11 11
Month August August August August
Day 17 17 17 17
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000 000
20- 40 -1 005 000 000 000
10- 20 0 021 003 000 210
05- 10 1 064 009 000 159
025- 050 2 226 027 045 2656
0125- 025 3 3259 131 712 3719
00625-0125 4 4327 195 1737 1159
lt0625 (5-12) 2098 9635 7506 2097
Organic Content 210 300 160 100
Ii I
B-11
Station
Survey
Month
Day
Particle size (mm) Phi
gt40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
12
August
29
000
000
012
046
186
3465
4498
17 93
241
45
12
August
29
55 58
12 12
August August
29 29
Percent by weight
000
000
002
009
026
118
189
9656
540
000 000
000 000
003 011
011 028
055 1013
859 5033
1596 1827
7476 2089
1 70 120
B-12
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
_-------------------- shy
B-13
STATI ON 58 Date 18 June 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (noI 2) Total occurrence
TaKa number (X) X SD
Nellertea 2 100 1717 5430 Nematoda 160 1000 137376 6361 1 Turbellaria 4 400 3434 4434 Oligochaeta 36 1000 3091 0 14705 ~iQQYik~ Q1rQ 4 300 3434 6003 bitnQgl~ebysect YrDsect ~Q[QiY~ ~~nni biQQpoundY1h[ sp ~Q[Qeng ~ilQD Chironomid larvae
3 1 3
61 1
300 100 300
1000 100
2576 859
2576 52375
859
4147 2715 4147
1428 1 2715
Chironollid pupae 1 100 859 271 5
Mean number of organismssample 276 standard deviation 72
nean nurn b er 0 f organIsms I 2 236974 Standard deviation 61410
H = 1 78 SD= 060 SR= 1 23 J= 051
A-24
STATION 55 Date 18 June 1984 Depth 18 m Salinity (bottom)1 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (no 1m2) occurrence
Taxa (X) X SD
Nematoda 160 1000 137376 43967 Turbellaria 1 100 859 271 5 Oligochaeta 61 1000 52375 31985 ~~iQQY~kY~~ int~[mQi~ ~Q[Qipound~l~ m~nini~ biIDnQ~Ylb[s sp
3 3 3
300 300 300
2576 2576 2576
4147 4147 4147
~Q[Q~bi~ ~slIDQni~ Chironomid larvae
85 6
1000 600
72981 5152
34165 4434
Mean number of organismssample 322 Standard deviation 75
2Mean number 0 f organIsms m 276469 Standard deviation 64099
H= 178 5D= 065 SR= 0B4 J= 059
A-25
Frequency Density (no2) occurrence -----------------
Taxa (7) X SD
Nematoda 104 1000 89294 47409 Turbell ar i a 1 100 859 2715 ~~~nQ~sect imni~Q~ tjQQsectQlis flQig~ Oligochaeta
2 1
297
100 100
1000
171 7 859
255004
5430 271 5
146273 ~~i~QYsect~Y~lls ilr2is gQrQi~y~ IDDilDia
24 4
600 300
20606 3434
27212 6003
Ostracoda 2 200 171 7 3620 biDQSy~b~C~ sp M~QYsectisect m~r~~Qi ~QrQeniy QD Harpacticoida
157 1 1 1
900 100 100 100
134800 859 859 859
73197 2715 2715 2715
sectpoundQttQDs SsDQD 113 900 97022 61656
STATION 45 Date 2 July 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) No of samples 10
172 C
Mean number of organismssample 708 Standard deviation 339
M ean num b er f 20 organisms 607889 Standard deviation 290B22
H= 216 SD= 073 SR= 1 27 J= 058
1-26
STATION 18 Date 2 July 1984 Depth 24 WI
Sal inity (bottom) 00 ppt Temperature (bottom) 172 C No of samples 10
--------------------------------~-----------------------------------------Frequency Density (nom2)
Total occurrence Taxa number (7) X SD
Nematoda 202 1000 173437 113532 ~~~nih~sect mnpoundQ~ Oligochleta
4 102
400 1000
3434 87577
4434 54873
~~igQYsect~Y~12 inl~rmgi2 ~Q[~poundYl~ m~ni~nsectisect bimnQpoundylh~[~ Spa
115 4
15
900 300 900
98739 3434
12879
100720 6003 9274
~Q[QQniY~ sect~QDi~ 55 900 47223 40525 Harpacticoida 1 100 859 2715 sectpoundQiiQlD SDg~DEisect Chironomid larvae
2 6
200 400
1717 5152
3620 7240
Hymenoptera 1 100 859 2715 Hydracarina 1 100 859 2715
Mean number of organismssample 508 Standard deviation 253
2Mean num ber 0 f organIsms m 436169 Standard deviation 217580
H= 225 SD= 074 SR= 1 22 J= 063
A-27
STATION 58 Date 2 July 1984 Depth 58 1
Salinity (bottom) 00 ppt Temperature (bottom) IBO C No of samples 10
Frequency Density (no2) Total occurrence
Taxa number ltX) i SD
Nematoda 151 1000 129649 42729 Turbellaria 1 100 859 2715 01 i gochaeta 41 1000 35203 22698 ~~i~e~~~ int~~m~~ 3 200 2576 5795 btbQglYRhY~ Yir~n~ ~e~~ampy mni~niii bimQeamp~tb~ sp ~e~eQhiY ~mQni Chironomid larvae
1 4 2
68 1
100 300 200
1000 100
859 3434 171 7
58385 859
271 5 6003 3620
1557 1 2715
Mean number of organisassample 272 Standard deviation
I 2Mean num ber 0 f organIsms I 233539 Standard deviation 62546
H = 1 69 SD= 061 SR= 099 J= 053
A-28
73
STATION 55 Date 2 July 1984 Depth 15 III
Salinity (bottom) 00 ppt Temperature (bottom) 182 C No of samples 10
Frequency Density (nom2) occurrence
Taxa (X) X SD
Nematoda 184 1()00 157982 5264B Turbellaria 1 100 859 271 5 Oligochaeta ~~iQQ~sect~Y~ll~ n~[~~Qi~ bitnggYQDYsect Yi[~nsect ~QrQipoundM2 m2ni~nsectisect bimnQpoundYn~[2 sp ~QrQQhiM Qni Harpacticoida
91 2 1 B 2
96 2
1000 200 100 500 200
1000 200
78133 171 7 859
6869 171 7
82426 1111
26058 3620 271 5 1890 3620shy
25980 3620
ChirDnomid larvae 5 400 4293 6071 Chironolllid pupae 1 100 859 2715
Mean number of organismssample 393 Standard deviation 53
2t1ean nUllber Df organlsms III 337430 Standard deviatiDn 45080
H= 187 SD= 067 SR= 116 J= 054
A-29
STATION 45 Date 17 Jul y 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (X) X SD
Nematoda 215 1000 184599 45837 ~~n~b~~ imDipoundQ Qe~Qni fllHi2
3 1
300 100
2576 859
4147 2715
Oligochaeta 305 1000 261873 147955 ~~iQQY~k~ in~rm~2i ~Qr~ipoundYl IDniln~i~ Ostracoda
17 1 2
500 100 200
14590 859
171 7
22554 2715 3620
bmnQpound~ihr sp ~QCQQhiY ~lQD~
176 1
1000 100
151114 859
57125 2715
Harpacticoida 4 300 3434 6003 sectQ~~Qn poundnQnai~ Chironomid larvae
91 5
1000 400
78133 4293
61310 6071
Mean number of organismssample 821 Standard deviation 275
M b f 2ean num er 0 organlsms m 70491 1 Standard deviation 236369
H= 215 SD= 073 SR= 114 J= 060
A-30
STATION 18 Date 17 Jul y 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom 203 C No of samples 10
Frequency Density (001 2 Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 339 1000 291065 119140 Turbellaria 3 200 2576 5795 ~~2~b~~ limnipoundQ12Oligochaeta
4 18S
300 1000
3434 161417
6003 89393
~~iQQy~~~ls in~(ID~Qi bim~Qampy~bg(2 Spa
34 16
800 700
29192 1373B
22967 15252
~g(gebi~m ~21mQni2 Harpacticoida
52 3
1000 200
44647 2576
25212 5795
2ampQ11Q1202 ampS02Qg~2i2 Chironomid larvae
18 10
700 700
15455 8586
13904 701 0
Mean number of organi$mssample 667 Standard deviation IBB
H ean nurn b er 1 20 f organIsms m 572686 Standard deviation 161750
H = 1 99 SD= 065 SR= 090 J= 060
A-31
STATION 58 Date 17 July 1984 Depth 55 AI
Salinity (bottom) 00 ppt Temperature (bottom) 197 C No of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nellatoda 173 1000 14853B 66390 Turbellaria 1 100 859 271 5 ~~~n~hu ini~QA Oligochaeta
1 46
100 1000
859 39496
2715 26293
~gipoundQy~~ygl2 in~rJg~i~ b1nQglYRnY~ Yi( Bivalvia
6 2 1
400 200 100
5152 1717 859
8295 3620 271 5
ei~ IDnH~n~i~ 2 200 171 7 3620 Ostracoda 1 100 959 271 5 biIDQHlh~( Spa ~Q(QRbim ~21Qnisect Diptera pupae
1 94
1
100 1000 100
859 80708
859
2715 35332 2715
Heleidae 1arvae 5 500 4293 4525 Chironomid larvae 1 100 859 2715
Mean number of organismssample 335 Standard deviatiDn 113
Mean number of organismsRI2 287631 Standard deviation 97413
H= 1 86 SO= 064 SR= 155 J= 049
A-32
STATION 55 Date 17 July 1984 Depth 18 m Sali nity (bottom) 00 ppt TeAlperature (bottom) 199 C No of samples 10
Frequency Density (nom2 ) occurrence
Taxa (X) x S D
Nematoda 61 1000 52375 33972 Turbellaria 1 100 859 2715 Oligochaeta 24 900 20606 11590 ~~i2QY~k~~1 iOi[2 bimDQ~xlb~r sp ~Q[QQhi~ sectgni~ Chironomid larvae
3 1
38 3
200 100
1000 300
2576 859
32627 2576
5795 2715
19326 4147
Mean number of organismssample 131 standard deviation 54
M b f 2ean num er 0 organIsms 112477 Standard deviation 46757
H= 184 SD= 066 SR= 085 J= 065
bull
A-33
STATION 45 Date 1 August 1984 Depth 58 m Sal i nity (bottoll) 03 ppt Temperature (bottom) 203 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa nUllber (X) X SD
Nematoda 145 1000 124417 52344 Turbellaria 1 100 859 2715 Mmth~sect iHpoundQ~ Q~~Qi ilQ[i9Oligochaeta
5 3
196
500 300
1000
4293 2576
168286
4525 4147
91064 ~igQYsect~~li int9i Ostracoda
2 3
100 300
171 7 2576
5430 4147
bimnQpoundtl sp ~Q[Q2hiY sectlQni~
240 6
1000 600
206064 5152
73526 4434
sectpoundQtQl poundngnai~Helei dae larvae
1862 1
1000 100
1598713 859
966134 271 ~
Mean number of organismssample 2464 Standard deviation 1156
211 ean num ber 0 f organIsms II 2115590 Standard deviation 992518
H= 124 SD= 041 SR= 089 J= 036
A-34
STATION 1S Date 1 August 1984 Depth 24 II
Salinity (bottom) 00 ppt Temperature (bottom) 198 C No of samp I es 10
Frequency Density (nom2) occurrence ---------------- shy
Taxa (X) X S D
Nuertea 1 100 859 2715 Nellatolllorpha 1 100 859 2715 Nematoda 248 1000 212933 108288 Turbellaria 4 400 3434 4434 ~untb~la Hli~g Oligochaeta
4 206
400 1000
3434 176872
4434 75309
~~igQYli~dli i[t~(gi~ ~QtQpound l binQ~ybt2 sp ~2l~bi Q[i ~2tlgtQ(ila tirisect sectpoundQtel poundl9lla Chironomid larvae
10 1
20 205
1 574
9
500 100 800
1000 100
1000 400
8586 859
17172 176013
859 492836
7727
10709 271 5
14021 48104
271 5 150531
13696
Mean number of organismssample 1284 Standard deviation 290
M b f I 2ean nurn er 0 organIsms III 1102442 Standard deviation 2488B5
H= 211 SD= 071 SR= 1 16 J= 057
A-35
STATION 58 Date 1 August 1984 Depth 55 m Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samp 1es 10
Frequency Densi ty _ ltnom2 ) Total occurrence
Taxa number (7) X SD
Nemertea 1 100 859 2715 Nematoda 22 900 18889 15036 Turbellaria 1 100 859 2715 Oligochaeta 19 700 16313 17385 biiQQgl~QhY~ YiCg~~ 2 200 171 7 3620 ~Q[~i~~l~ m2nil~n2i2 ~Q[QehiYm ~lmQni2
4 164
300 1000
3434 140810
6003 103048
Heleidae larvae 8 500 6869 8868
Mean number of organismssample 221 Standard deviation 111
I 2Mean num ber 0 f organIsms m 189751 Standard deviation 95391
H = L 37 SD= 043 SR= 090 J= 046
A-36
STATION 55 Date 1 August 1984 Depth 15 m Salinity (bottoll) 01 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (i ) X SD
Nemertea 1 100 859 2715 Neutoda 122 1000 104749 7394B Turbellaria 4 300 3434 6003 ~~~~~nt~ secte~poundQa~ Oligochaeta
1 118
100 1000
859 101315
2715 61223
~giQgY~k~~l iot~[m~Qi btbQg~2b~ Y[O ~grQipound~ ~nl~ni b~ngpound~tb~[ Spa
3 1 5 1
200 100 500 100
2576 859
4293 859
5795 2715 4525 2715
~Q[QebiYm ~mQoi sect~QttQ~ ~OQOi Heleidae larvae
42 2 2
800 200 100
36061 171 7 171 7
21341 3620 5430
Chironomid larvae 4 400 3434 4434
Mean number of organismssapIe 306 Standard deviation 169
M b f I 2ean nurn er 0 organIsms m 262732 Standard deviation 145101
H = 198 SD= 067 SR= 1 45 J= 054
A-37
~-- --------------~~-------------
STATION 45 Date 17 August 1984 Depth 61 1
Salinity (bottom) 10 ppt Temperature (bottom) 210 C No of samp 1es 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nematoda 240 1000 206064 130213 ~~h~sect limQ tjQ~~Hi~ fQ[i~~ Oligochaeta
31 2
245
400 100
1000
26617 1717
210357
75228 5430
121374 babgglYQbl~ Yi[~sect 1 100 859 2715 Ostracoda 1 100 859 271 5 biQ~xtb~[ Spa ~~Q~~isect ~[pound~Qisect ~Qgebi HQOi
333 2
143
1000 200
1000
28591 4 171 7
1227BO
106553 3620
106860 sectpoundQUg~ poundg~nsectisect 1738 1000 1492247 68441 7
Mean number of organismssample 2736 Standard deviation 944
M b f I 2ean num er 0 organlslls m 2349130 Standard deviation 810600
H= 172 SD= 056 SR= 079 J= 052
A-38
STATION 18 Date 17 August 1984 Depth 27 III
Sal i ni ty (botto) 01 ppt Temperature (bottom) 214 C No of samples 10
Frequency Density (nom 2 ) occurrence
Taxa (X) X SD
Nematoda 186 1000 159700 62468 ~tgt SPa 2 100 171 7 5430 Turbellaria 8 400 6869 8868 ~~ntbg2 imnipoundQ 12 700 10303 11304 Oligochaeta 283 1000 242984 90509 ~~iQQY~~Y~lls inlgtmggisBivalvia
4 1
400 100
3434 859
4434 271 5
~Qt~i~Y nilnsectisectbimnQpoundttbg[s SPa ~QtQQbi~ islmQDi2
1 17
286
100 900
1000
859 14596
245560
271 5 10747 83461
sectpoundetteln poundDsggnsectisect Chironomid larvae
526 4
1000 3Q0
451624 3434
179610 6003
Mean number of organismssapIe 1330 Standard deviation 162
Mean nurn ber I 20 f organIsms m 1141938 Standard deviation 139389
H= 214 SD= 073 SR= 1 06 J= 060
A-39
STATION 58 Date 17 August 1984 Depth 55 II
Salinity (bottom) 01 ppt Temperature (bottom) 220 C ND of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (7) x S D
Nematoda 68 1000 58385 27689 Turbellar i a 4 200 3434 8295 Oligochaeta 19 800 16313 13084 ~~i~Q~k~~l~ in~~[m~i bitUQ9Y2bYa Yi[~na Bivalvia
3 3 4
300 300 300
2576 2576 3434
4147 4147 6003
gQ[QipoundYl~ mnilDa 1 100 859 2715 binQpoundY~[ sp gQ[Q2UY a~mgnia sect~Qtgl~n ~n~~ni
2 338
6
100 1000 400
171 7 290207
5152
5430 56636 7240
Mean number of organismssample 448 Standard deviation 72
W b f 2lean num er 0 organlsms II 384653 Standard deviation 61988
H = 1 27 SD= 041 SR= 1 02 J= 038
A-40
STATION 55 Date 17 August 1984 Depth 18 m Salinity (bottom) 00 ppt Temperature (bottol) 223 C No of samples 10
Frequency Density (nom 2 ) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 291 1000 249853 118104 Turbellaria 1 100 859 2715 M~ntb~ mni~Q Oligochaeta
1 47
100 1000
859 40354
2715 28347
~~iQQ~sectkY~ll int~[m~gi bitbQQ1YSDY Yi(gn Bivalvia
25 12
6
900 500 400
21465 10303 5152
1231 0 18459 7240
~Q~2ipoundY mnil~ni Ostracoda
11 8
400 600
9445 6869
12442 6773
bmnQpoundYb~r~ SPa 52 1000 44647 19746 ~QrQsbY lmgnisectsQiielo snQ~ni~ Chironomid larvae
43 5
15
1000 400 BOO
36920 4293
12879
21436 6071 8344
Mean number of organismssample 517 Standard deviation 174
M b f I 2ean num er 0 organlsms m 443896 Standard deviation 149431
W = 228 SD= 065 SR= 1 33 J= 062
A-41
STATION 45 Date 29 August 1984 Depth 55 III
Salinity (bottom) 07 ppt Temperature (bottom) 199 C No of samples 10
Frequency Density (noI 2) Total occurrence
Taxa number (X) X SD
Nematoda 192 1000 164851 98380 ~sntbsect limnipoundQlDligochaeta
2 198
200 1000
171 7 170003
3620 67339
~Q[eipoundYls msniln~isect Ostracoda
1 4
100 400
859 3434
2715 4434
bimnQpoundytb[s Spa gQ[Qeniy sect21QOi~ sectpoundQttQlsO poundsOsggOi
164 87
2468
1000 1000 1000
140810 74698
2119025
39283 39460
840890
Mean number of organismssample 311 6 Standard deviation 101 1
ill b f 2nean nUll er 0 organIsms 2675398 Standard deviation 8682B8
W= 116 SD= 036 SR= 060 J= 039
A-42
STATION 18 Date 29 August 1984 Depth 30 bull Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samples 10
Total Frequency occurrence
Densi ty 2
(nom )
Taxa number (~ ) x S D
Nematoda 150 1000 128790 28905 Turbellaria 7 400 6010 9096 ~nh imni~Qj Oligochaeta ~~i~2Y~k~~1 ini~CIDgii bih2g~Qb~ Yi(~U2 Bivalvi a
B 145
1 1 2
600 1000
100 100 200
6869 124497
859 859
171 7
677 3 84732
271S 2715 3620
~Q[Qi~yli miDllgni bimn2pound~ih~C sp ~QtQehiY imQUia Harpacticoida
7 7
265 1
500 300
1000 100
6010 601 0
227529 859
8145 10747
139462 2715
sect~QtiQDi ~Q~Q~i~ Chironomid larvae
2471 2
1000 200
2121601 171 7
1063112 3620
Mean number of organismssample 3067 Standard deviation 121 9
2Mean number 0 f organIsms m 2633326 standard deviation 1046718
H = 1 09 SD= 034 SR= 1 04 J= 029
A-43
STATION 58 Date 29 August 1984 Depth 55 111
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (noI 2 ) Total occurrence -----------------
Taxa nUllber (X) X SD
Nemertea 4 400 3434 4434 Nuatoda 64 1000 54950 25016 Turbellaria 9 400 7727 11047 ~Hl~b limli~Q19 Oligochaeta
1 37
100 1000
859 31769
2715 19006
i~Qyh il(~~ bHtlQSlheln Yl Bivalvia
4 4
20
200 300 400
3434 3434
17172
8215 6003
26541 ~e(ijY l bQ~dlH sp
26 1
700 100
22324 859
25662 2715
~Q[QQhil iQ sectjgUell HD Heleidae larvae
418 20
1
1000 800 100
358895 17172
859
129443 12799 271 5
Mean number of organismssample 609 Standard deviation 175
nean num b er 0 f organIsms 1 111 2 522887 Standard deviation 150164
H= 176 SD= 051 SR= 1 30 J= 047
A-44
I I
I
I
STATION SS
Date 29 August 1984 Depth 21 1
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (no2) Total occurrence
Taxa nUllber (X) x S D
Nematoda ISO 1000 128790 37969 Turbellaria 1 100 859 271 5 Oligochaeta 48 1000 41213 16088 ~i~g~sect~~l iQ~~mgi bi~QQg~gb~sect ~i~nsect
10 14
600 600
eSB6 12020
9050 14137
Bivalvia 4 200 3434 7240 ~Q[Q~Yl niQaa Ostracoda
15 7
700 SOO
12879 6010
15806 7069
bmQg~~~b~ SPa 14 800 12020 8295 ~g[gaby mgni sect~g~~Qn ~ngnai Chironomid larvae
IB4 25 9
1000 900 700
157982 21465
7727
35563 16810 6335shy
Mean number of organismssample 481 Standard deviation B6
2Mean number 0 f organlsms m 412987 Standard deviation 74131
H= 24S SD= 074 SR= 1 23 J= 068
A-45
STATION 45 Date 14 September 1984 Depth 61 11
Salinity (bottom) 03 ppt Temperature (bottom) IB4 C No of samples 10
---------------------------------~----------------------------------------
Taxa TotalnUlllDer
Frequency occ~~~ence
Density (no 2) -----X-------sect7B
Nematoda 189 1000 162275 85233 t1tQ SPa
Turbellaria 2 2
200 100
171 7 171 7
3620 5430
~~~nIng limoifQl t1QQQDi~ flQriQ Oligochaeta
5 19
142
400 800
1000
4293 1631 3
121921
6071 12442 30504
~QQifYl mDl~D bimoQpoundt1hgr Spa Cumacea
19 184
2
800 1000 200
1631 3 157982
171 7
130B4 69541 3620
~Q[QnniYm ~~lmQDi Harpacticoida
118 1
1000 100
10131 5 B59
43367 2715
sectfQIIQD fOQgO Chironomid larvae
1780 1
1000 100
1528308 859
673586 2715
Mean number of organismssample 2464 Standard deviation 874
M ean num b er f 20 organlsms 2115590 Standard deviation 750305
H= 151 SD= 046 SR= 1 07 J= 041
A-46
STATION 18 Date 14 September 1984 Depth 21 III
Salinity (bottom) 01 ppt Temperature (botto) 182 C No of samples 10
Frequency DenSity (nom 2 ) Total occurrence ---------------- shy
Taxa nUlDber (i) X SD
Nemertea 1 100 859 271 5 Nematoda 186 1000 159700 44925 Turbellaria 16 400 13738 20717 ~~Dth~~ limni~Ql Oligochaeta
13 55
700 900
11162 47223
9096 30085
~Q~ei~Yl nil~Qi~ 17 900 14596 7069 bimDg~lbg[ Spa b 500 5152 6003 ~Q[Q2niY ~lgQi~ Harpacti coi da
562 2
1000 200
482533 171 7
136766 3620
sectpoundQttQ~Q~ ~n~ni 791 1000 679153 324290
Mean number of organismssample 1649 Standard deviation 447
I 211ean nUll ber 0 f organIsms I 1415831 Standard deviation 384136
H= 179 SD= 064 SR= 084 J= 054
A-47
STATION 58 Date 14 September 1984 Depth 58 III
Salinity (bottom) 01 ppt Temperature (bottom) 191 C No of sampl es 10
-------------------------------------------~------------------------------Frequency Density (nom 2 )
Total occurrence Taxa number eX) X SD
Nemertea 1 100 859 2715 Nematoda 55 1000 47223 18658 Turbellaria 10 500 8586 11448
1 100 859 2715 Oligochaeta 41 1000 35203 17850 ~~iQQ~~gll iu1g[m~i ~Q[Q~Yl nilD bimnQ~Y~h[ Spa ~Q[Q~hiYm lmgui sectpoundQilg1D poundU2D Chironomid larvae
4 10
2 277
23 4
100 500 200
1000 700 300
3434 8586 171 7
237832 19748 3434
10861 11448 3620
50561 21051 6003
Mean number of organismssample 428 Standard deviation 51
M b f 2ean num er 0 organIsms III 367481 Standard deviation 43743
H= 179 SD= 055 SR= 114 J= 052
A-48
I I
STATION SS Date 14 September 1984 Depth 21 II
Salinity (bottom) 01 ppt Temperature (bottom) 190 C No of samples 10
--------------------------------------------------------------------~-----
Frequency Density (no1I2) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 102 1000 87577 39200 Oligochaeta 34 700 29192 31142 ~iQ2Y~y1 int(mgi~ bithQgl~en~ Yi(gDsect ~Q(~i~Y m~DilgDsecti~ bimDQamp~1h(sect sp ~2(QQhiY slmQD 2poundQiiQlsD ~sD~g~nsecti Chironomid larvae
36 18 16 17
100 16
3
1000 600 800 700
1000 800 300
30910 15455 13738 14596 85860 13738 2576
157BO 20953 10078 14621 32126 10861 4147
Mean number of organismssample 342 Standard deviation 97
2Mean nUllber 0 f organlsms m 293641 Standard deviation 83617
H= 262 SD= 079 SR= 095 J= 083
A-49
Appendix B--Sediment particle size and organic content of the Cathlamet Bay
benthic invertebrate sites 13 March through 14 September
1984
iii
1
Station 18a 48 54 57
Survey 1 1 1 1
Month March March March March
Day 13 13 13 13
Particle size (mm) Phib Percent by weight
gt 40 -2 000 000 000
20- 40 -1 000 000 000
10- 20 0 000 009 000
05- 10 1 018 1079 032
025- 050 2 545 7583 2468
0125- 025 3 8731 1225 6783
00625-0125 4 491 037 657
lt0625 (5-12) 216 067 060
Organic Content 160 116 128
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
b Phi= -log2(sediment particle diameter in mm)
B-1
Station 18a 48 54 57
Survey 2 2 2 2
Month April April April April
Day 5 5 5 5
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 003 093 000
05shy 10 1 005 31 75 023
025shy 050 2 087 5904 2368
0125- 025 3 6316 750 7155
00625-0125 4 3056 026 427
lt0625 (5-12) 533 052 028
Organic Content 081 077 065
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-2
Station 45 55 58
Survey 3 3 3 3
Month April April April April
Day 18 18 18 18
Particle size (mm)
gt 40
Phi
-2
Percent by weight
000 000 000
20shy 40 -1 000 000 000
10shy 20 0 005 009 004
05shy 10 1 010 027 013
025shy 050 2 015 095 225
0125- 025 3 097 536 6111
00625-0125 4 453 2821 2205
lt0625 (5-12) 9420 6511 1442
Organic Content 31 42 14
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-3
Station 18a 45 55 58
Survey 4 4 4 4
Month May May May May
Day 4 4 4 4
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 021
05shy 10 1 000 065 063
025shy 050 2 012 370 230
0125- 025 3 091 4099 4696
00625-0125 4 322 3650 3052
lt0625 (5-12) 9575 1810 1939
Organic Content 330 180 160
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-4
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
5
May
17
000
000
005
016
217
5862
2729
1170
100
45 55 58
5 5 5
May May May
17 17 17
Percent by weight
000 000
000 000
005 008
113 031
325 274
1903 5613
2784 2401
4870 1672
240 110
000
000
000
010
020
079
397
9494
390
B-5
Station 18al 45 55 58
Survey 6 6 6 6
Month June June June June
Day 6 6 6 6
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 020
05shy 10 1 005 051 027
025shy 050 2 005 301 1 79
0125- 025 3 074 3189 5404
00625-0125 4 599 4118 2885
lt0625 (5-12) 9317 2332 1485
Organic Content 340 240 150
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-6
Station
Survey
Month
Day
Particle size Cmm) Phi
gt 40 -2
20shy 40 -1
10shy 20 a
05shy 10 1
025shy 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
7
June
18
000
000
005
029
138
3917
4143
1768
180
45
7
June
18
55 58
7 7
June June
18 18
Percent by weight
000
000
000
010
020
080
427
9464
310
000 000
000 000
000 007
011 022
057 190
957 5286
3023 2642
5957 1853
1 70 110
B-7
Station 18al 45 55 58
Survey 8 8 8 8
Month July July July July
Day 2 2 2 2
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 006 002 006
05shy 10 1 006 0l3 023
025shy 050 2 017 088 171
0125- 025 3 074 2712 5365
00625-0125 4 552 3892 3081
lt0625 (5-12) 9345 3294 l354
Organic Content 410 210 160
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-8
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
9
July
17
000
000
003
013
130
4294
4434
1127
130
45
9
July
17
Percent
000
000
000
006
012
051
046
9885
290
55
9
July
17
by weight
000
000
019
048
091
628
3616
5597
030
58
9
July
17
000
000
004
022
158
5017
3148
1650
140
B-9
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18al
10
August
1
45
10
August
1
55
10
August
1
58
10
August
1
Percent by weight
000 000
000 004
001 004
009 018
018 088
098 306
049 2510
9824 7070
000
005
045
763
3604
4495
932
156
100 190 060
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-10
Station 18 45 55 58
Survey 11 11 11 11
Month August August August August
Day 17 17 17 17
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000 000
20- 40 -1 005 000 000 000
10- 20 0 021 003 000 210
05- 10 1 064 009 000 159
025- 050 2 226 027 045 2656
0125- 025 3 3259 131 712 3719
00625-0125 4 4327 195 1737 1159
lt0625 (5-12) 2098 9635 7506 2097
Organic Content 210 300 160 100
Ii I
B-11
Station
Survey
Month
Day
Particle size (mm) Phi
gt40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
12
August
29
000
000
012
046
186
3465
4498
17 93
241
45
12
August
29
55 58
12 12
August August
29 29
Percent by weight
000
000
002
009
026
118
189
9656
540
000 000
000 000
003 011
011 028
055 1013
859 5033
1596 1827
7476 2089
1 70 120
B-12
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
_-------------------- shy
B-13
STATION 55 Date 18 June 1984 Depth 18 m Salinity (bottom)1 00 ppt Temperature (bottom) 157 C No of samples 10
Frequency Density (no 1m2) occurrence
Taxa (X) X SD
Nematoda 160 1000 137376 43967 Turbellaria 1 100 859 271 5 Oligochaeta 61 1000 52375 31985 ~~iQQY~kY~~ int~[mQi~ ~Q[Qipound~l~ m~nini~ biIDnQ~Ylb[s sp
3 3 3
300 300 300
2576 2576 2576
4147 4147 4147
~Q[Q~bi~ ~slIDQni~ Chironomid larvae
85 6
1000 600
72981 5152
34165 4434
Mean number of organismssample 322 Standard deviation 75
2Mean number 0 f organIsms m 276469 Standard deviation 64099
H= 178 5D= 065 SR= 0B4 J= 059
A-25
Frequency Density (no2) occurrence -----------------
Taxa (7) X SD
Nematoda 104 1000 89294 47409 Turbell ar i a 1 100 859 2715 ~~~nQ~sect imni~Q~ tjQQsectQlis flQig~ Oligochaeta
2 1
297
100 100
1000
171 7 859
255004
5430 271 5
146273 ~~i~QYsect~Y~lls ilr2is gQrQi~y~ IDDilDia
24 4
600 300
20606 3434
27212 6003
Ostracoda 2 200 171 7 3620 biDQSy~b~C~ sp M~QYsectisect m~r~~Qi ~QrQeniy QD Harpacticoida
157 1 1 1
900 100 100 100
134800 859 859 859
73197 2715 2715 2715
sectpoundQttQDs SsDQD 113 900 97022 61656
STATION 45 Date 2 July 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) No of samples 10
172 C
Mean number of organismssample 708 Standard deviation 339
M ean num b er f 20 organisms 607889 Standard deviation 290B22
H= 216 SD= 073 SR= 1 27 J= 058
1-26
STATION 18 Date 2 July 1984 Depth 24 WI
Sal inity (bottom) 00 ppt Temperature (bottom) 172 C No of samples 10
--------------------------------~-----------------------------------------Frequency Density (nom2)
Total occurrence Taxa number (7) X SD
Nematoda 202 1000 173437 113532 ~~~nih~sect mnpoundQ~ Oligochleta
4 102
400 1000
3434 87577
4434 54873
~~igQYsect~Y~12 inl~rmgi2 ~Q[~poundYl~ m~ni~nsectisect bimnQpoundylh~[~ Spa
115 4
15
900 300 900
98739 3434
12879
100720 6003 9274
~Q[QQniY~ sect~QDi~ 55 900 47223 40525 Harpacticoida 1 100 859 2715 sectpoundQiiQlD SDg~DEisect Chironomid larvae
2 6
200 400
1717 5152
3620 7240
Hymenoptera 1 100 859 2715 Hydracarina 1 100 859 2715
Mean number of organismssample 508 Standard deviation 253
2Mean num ber 0 f organIsms m 436169 Standard deviation 217580
H= 225 SD= 074 SR= 1 22 J= 063
A-27
STATION 58 Date 2 July 1984 Depth 58 1
Salinity (bottom) 00 ppt Temperature (bottom) IBO C No of samples 10
Frequency Density (no2) Total occurrence
Taxa number ltX) i SD
Nematoda 151 1000 129649 42729 Turbellaria 1 100 859 2715 01 i gochaeta 41 1000 35203 22698 ~~i~e~~~ int~~m~~ 3 200 2576 5795 btbQglYRhY~ Yir~n~ ~e~~ampy mni~niii bimQeamp~tb~ sp ~e~eQhiY ~mQni Chironomid larvae
1 4 2
68 1
100 300 200
1000 100
859 3434 171 7
58385 859
271 5 6003 3620
1557 1 2715
Mean number of organisassample 272 Standard deviation
I 2Mean num ber 0 f organIsms I 233539 Standard deviation 62546
H = 1 69 SD= 061 SR= 099 J= 053
A-28
73
STATION 55 Date 2 July 1984 Depth 15 III
Salinity (bottom) 00 ppt Temperature (bottom) 182 C No of samples 10
Frequency Density (nom2) occurrence
Taxa (X) X SD
Nematoda 184 1()00 157982 5264B Turbellaria 1 100 859 271 5 Oligochaeta ~~iQQ~sect~Y~ll~ n~[~~Qi~ bitnggYQDYsect Yi[~nsect ~QrQipoundM2 m2ni~nsectisect bimnQpoundYn~[2 sp ~QrQQhiM Qni Harpacticoida
91 2 1 B 2
96 2
1000 200 100 500 200
1000 200
78133 171 7 859
6869 171 7
82426 1111
26058 3620 271 5 1890 3620shy
25980 3620
ChirDnomid larvae 5 400 4293 6071 Chironolllid pupae 1 100 859 2715
Mean number of organismssample 393 Standard deviation 53
2t1ean nUllber Df organlsms III 337430 Standard deviatiDn 45080
H= 187 SD= 067 SR= 116 J= 054
A-29
STATION 45 Date 17 Jul y 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (X) X SD
Nematoda 215 1000 184599 45837 ~~n~b~~ imDipoundQ Qe~Qni fllHi2
3 1
300 100
2576 859
4147 2715
Oligochaeta 305 1000 261873 147955 ~~iQQY~k~ in~rm~2i ~Qr~ipoundYl IDniln~i~ Ostracoda
17 1 2
500 100 200
14590 859
171 7
22554 2715 3620
bmnQpound~ihr sp ~QCQQhiY ~lQD~
176 1
1000 100
151114 859
57125 2715
Harpacticoida 4 300 3434 6003 sectQ~~Qn poundnQnai~ Chironomid larvae
91 5
1000 400
78133 4293
61310 6071
Mean number of organismssample 821 Standard deviation 275
M b f 2ean num er 0 organlsms m 70491 1 Standard deviation 236369
H= 215 SD= 073 SR= 114 J= 060
A-30
STATION 18 Date 17 Jul y 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom 203 C No of samples 10
Frequency Density (001 2 Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 339 1000 291065 119140 Turbellaria 3 200 2576 5795 ~~2~b~~ limnipoundQ12Oligochaeta
4 18S
300 1000
3434 161417
6003 89393
~~iQQy~~~ls in~(ID~Qi bim~Qampy~bg(2 Spa
34 16
800 700
29192 1373B
22967 15252
~g(gebi~m ~21mQni2 Harpacticoida
52 3
1000 200
44647 2576
25212 5795
2ampQ11Q1202 ampS02Qg~2i2 Chironomid larvae
18 10
700 700
15455 8586
13904 701 0
Mean number of organi$mssample 667 Standard deviation IBB
H ean nurn b er 1 20 f organIsms m 572686 Standard deviation 161750
H = 1 99 SD= 065 SR= 090 J= 060
A-31
STATION 58 Date 17 July 1984 Depth 55 AI
Salinity (bottom) 00 ppt Temperature (bottom) 197 C No of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nellatoda 173 1000 14853B 66390 Turbellaria 1 100 859 271 5 ~~~n~hu ini~QA Oligochaeta
1 46
100 1000
859 39496
2715 26293
~gipoundQy~~ygl2 in~rJg~i~ b1nQglYRnY~ Yi( Bivalvia
6 2 1
400 200 100
5152 1717 859
8295 3620 271 5
ei~ IDnH~n~i~ 2 200 171 7 3620 Ostracoda 1 100 959 271 5 biIDQHlh~( Spa ~Q(QRbim ~21Qnisect Diptera pupae
1 94
1
100 1000 100
859 80708
859
2715 35332 2715
Heleidae 1arvae 5 500 4293 4525 Chironomid larvae 1 100 859 2715
Mean number of organismssample 335 Standard deviatiDn 113
Mean number of organismsRI2 287631 Standard deviation 97413
H= 1 86 SO= 064 SR= 155 J= 049
A-32
STATION 55 Date 17 July 1984 Depth 18 m Sali nity (bottom) 00 ppt TeAlperature (bottom) 199 C No of samples 10
Frequency Density (nom2 ) occurrence
Taxa (X) x S D
Nematoda 61 1000 52375 33972 Turbellaria 1 100 859 2715 Oligochaeta 24 900 20606 11590 ~~i2QY~k~~1 iOi[2 bimDQ~xlb~r sp ~Q[QQhi~ sectgni~ Chironomid larvae
3 1
38 3
200 100
1000 300
2576 859
32627 2576
5795 2715
19326 4147
Mean number of organismssample 131 standard deviation 54
M b f 2ean num er 0 organIsms 112477 Standard deviation 46757
H= 184 SD= 066 SR= 085 J= 065
bull
A-33
STATION 45 Date 1 August 1984 Depth 58 m Sal i nity (bottoll) 03 ppt Temperature (bottom) 203 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa nUllber (X) X SD
Nematoda 145 1000 124417 52344 Turbellaria 1 100 859 2715 Mmth~sect iHpoundQ~ Q~~Qi ilQ[i9Oligochaeta
5 3
196
500 300
1000
4293 2576
168286
4525 4147
91064 ~igQYsect~~li int9i Ostracoda
2 3
100 300
171 7 2576
5430 4147
bimnQpoundtl sp ~Q[Q2hiY sectlQni~
240 6
1000 600
206064 5152
73526 4434
sectpoundQtQl poundngnai~Helei dae larvae
1862 1
1000 100
1598713 859
966134 271 ~
Mean number of organismssample 2464 Standard deviation 1156
211 ean num ber 0 f organIsms II 2115590 Standard deviation 992518
H= 124 SD= 041 SR= 089 J= 036
A-34
STATION 1S Date 1 August 1984 Depth 24 II
Salinity (bottom) 00 ppt Temperature (bottom) 198 C No of samp I es 10
Frequency Density (nom2) occurrence ---------------- shy
Taxa (X) X S D
Nuertea 1 100 859 2715 Nellatolllorpha 1 100 859 2715 Nematoda 248 1000 212933 108288 Turbellaria 4 400 3434 4434 ~untb~la Hli~g Oligochaeta
4 206
400 1000
3434 176872
4434 75309
~~igQYli~dli i[t~(gi~ ~QtQpound l binQ~ybt2 sp ~2l~bi Q[i ~2tlgtQ(ila tirisect sectpoundQtel poundl9lla Chironomid larvae
10 1
20 205
1 574
9
500 100 800
1000 100
1000 400
8586 859
17172 176013
859 492836
7727
10709 271 5
14021 48104
271 5 150531
13696
Mean number of organismssample 1284 Standard deviation 290
M b f I 2ean nurn er 0 organIsms III 1102442 Standard deviation 2488B5
H= 211 SD= 071 SR= 1 16 J= 057
A-35
STATION 58 Date 1 August 1984 Depth 55 m Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samp 1es 10
Frequency Densi ty _ ltnom2 ) Total occurrence
Taxa number (7) X SD
Nemertea 1 100 859 2715 Nematoda 22 900 18889 15036 Turbellaria 1 100 859 2715 Oligochaeta 19 700 16313 17385 biiQQgl~QhY~ YiCg~~ 2 200 171 7 3620 ~Q[~i~~l~ m2nil~n2i2 ~Q[QehiYm ~lmQni2
4 164
300 1000
3434 140810
6003 103048
Heleidae larvae 8 500 6869 8868
Mean number of organismssample 221 Standard deviation 111
I 2Mean num ber 0 f organIsms m 189751 Standard deviation 95391
H = L 37 SD= 043 SR= 090 J= 046
A-36
STATION 55 Date 1 August 1984 Depth 15 m Salinity (bottoll) 01 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (i ) X SD
Nemertea 1 100 859 2715 Neutoda 122 1000 104749 7394B Turbellaria 4 300 3434 6003 ~~~~~nt~ secte~poundQa~ Oligochaeta
1 118
100 1000
859 101315
2715 61223
~giQgY~k~~l iot~[m~Qi btbQg~2b~ Y[O ~grQipound~ ~nl~ni b~ngpound~tb~[ Spa
3 1 5 1
200 100 500 100
2576 859
4293 859
5795 2715 4525 2715
~Q[QebiYm ~mQoi sect~QttQ~ ~OQOi Heleidae larvae
42 2 2
800 200 100
36061 171 7 171 7
21341 3620 5430
Chironomid larvae 4 400 3434 4434
Mean number of organismssapIe 306 Standard deviation 169
M b f I 2ean nurn er 0 organIsms m 262732 Standard deviation 145101
H = 198 SD= 067 SR= 1 45 J= 054
A-37
~-- --------------~~-------------
STATION 45 Date 17 August 1984 Depth 61 1
Salinity (bottom) 10 ppt Temperature (bottom) 210 C No of samp 1es 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nematoda 240 1000 206064 130213 ~~h~sect limQ tjQ~~Hi~ fQ[i~~ Oligochaeta
31 2
245
400 100
1000
26617 1717
210357
75228 5430
121374 babgglYQbl~ Yi[~sect 1 100 859 2715 Ostracoda 1 100 859 271 5 biQ~xtb~[ Spa ~~Q~~isect ~[pound~Qisect ~Qgebi HQOi
333 2
143
1000 200
1000
28591 4 171 7
1227BO
106553 3620
106860 sectpoundQUg~ poundg~nsectisect 1738 1000 1492247 68441 7
Mean number of organismssample 2736 Standard deviation 944
M b f I 2ean num er 0 organlslls m 2349130 Standard deviation 810600
H= 172 SD= 056 SR= 079 J= 052
A-38
STATION 18 Date 17 August 1984 Depth 27 III
Sal i ni ty (botto) 01 ppt Temperature (bottom) 214 C No of samples 10
Frequency Density (nom 2 ) occurrence
Taxa (X) X SD
Nematoda 186 1000 159700 62468 ~tgt SPa 2 100 171 7 5430 Turbellaria 8 400 6869 8868 ~~ntbg2 imnipoundQ 12 700 10303 11304 Oligochaeta 283 1000 242984 90509 ~~iQQY~~Y~lls inlgtmggisBivalvia
4 1
400 100
3434 859
4434 271 5
~Qt~i~Y nilnsectisectbimnQpoundttbg[s SPa ~QtQQbi~ islmQDi2
1 17
286
100 900
1000
859 14596
245560
271 5 10747 83461
sectpoundetteln poundDsggnsectisect Chironomid larvae
526 4
1000 3Q0
451624 3434
179610 6003
Mean number of organismssapIe 1330 Standard deviation 162
Mean nurn ber I 20 f organIsms m 1141938 Standard deviation 139389
H= 214 SD= 073 SR= 1 06 J= 060
A-39
STATION 58 Date 17 August 1984 Depth 55 II
Salinity (bottom) 01 ppt Temperature (bottom) 220 C ND of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (7) x S D
Nematoda 68 1000 58385 27689 Turbellar i a 4 200 3434 8295 Oligochaeta 19 800 16313 13084 ~~i~Q~k~~l~ in~~[m~i bitUQ9Y2bYa Yi[~na Bivalvia
3 3 4
300 300 300
2576 2576 3434
4147 4147 6003
gQ[QipoundYl~ mnilDa 1 100 859 2715 binQpoundY~[ sp gQ[Q2UY a~mgnia sect~Qtgl~n ~n~~ni
2 338
6
100 1000 400
171 7 290207
5152
5430 56636 7240
Mean number of organismssample 448 Standard deviation 72
W b f 2lean num er 0 organlsms II 384653 Standard deviation 61988
H = 1 27 SD= 041 SR= 1 02 J= 038
A-40
STATION 55 Date 17 August 1984 Depth 18 m Salinity (bottom) 00 ppt Temperature (bottol) 223 C No of samples 10
Frequency Density (nom 2 ) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 291 1000 249853 118104 Turbellaria 1 100 859 2715 M~ntb~ mni~Q Oligochaeta
1 47
100 1000
859 40354
2715 28347
~~iQQ~sectkY~ll int~[m~gi bitbQQ1YSDY Yi(gn Bivalvia
25 12
6
900 500 400
21465 10303 5152
1231 0 18459 7240
~Q~2ipoundY mnil~ni Ostracoda
11 8
400 600
9445 6869
12442 6773
bmnQpoundYb~r~ SPa 52 1000 44647 19746 ~QrQsbY lmgnisectsQiielo snQ~ni~ Chironomid larvae
43 5
15
1000 400 BOO
36920 4293
12879
21436 6071 8344
Mean number of organismssample 517 Standard deviation 174
M b f I 2ean num er 0 organlsms m 443896 Standard deviation 149431
W = 228 SD= 065 SR= 1 33 J= 062
A-41
STATION 45 Date 29 August 1984 Depth 55 III
Salinity (bottom) 07 ppt Temperature (bottom) 199 C No of samples 10
Frequency Density (noI 2) Total occurrence
Taxa number (X) X SD
Nematoda 192 1000 164851 98380 ~sntbsect limnipoundQlDligochaeta
2 198
200 1000
171 7 170003
3620 67339
~Q[eipoundYls msniln~isect Ostracoda
1 4
100 400
859 3434
2715 4434
bimnQpoundytb[s Spa gQ[Qeniy sect21QOi~ sectpoundQttQlsO poundsOsggOi
164 87
2468
1000 1000 1000
140810 74698
2119025
39283 39460
840890
Mean number of organismssample 311 6 Standard deviation 101 1
ill b f 2nean nUll er 0 organIsms 2675398 Standard deviation 8682B8
W= 116 SD= 036 SR= 060 J= 039
A-42
STATION 18 Date 29 August 1984 Depth 30 bull Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samples 10
Total Frequency occurrence
Densi ty 2
(nom )
Taxa number (~ ) x S D
Nematoda 150 1000 128790 28905 Turbellaria 7 400 6010 9096 ~nh imni~Qj Oligochaeta ~~i~2Y~k~~1 ini~CIDgii bih2g~Qb~ Yi(~U2 Bivalvi a
B 145
1 1 2
600 1000
100 100 200
6869 124497
859 859
171 7
677 3 84732
271S 2715 3620
~Q[Qi~yli miDllgni bimn2pound~ih~C sp ~QtQehiY imQUia Harpacticoida
7 7
265 1
500 300
1000 100
6010 601 0
227529 859
8145 10747
139462 2715
sect~QtiQDi ~Q~Q~i~ Chironomid larvae
2471 2
1000 200
2121601 171 7
1063112 3620
Mean number of organismssample 3067 Standard deviation 121 9
2Mean number 0 f organIsms m 2633326 standard deviation 1046718
H = 1 09 SD= 034 SR= 1 04 J= 029
A-43
STATION 58 Date 29 August 1984 Depth 55 111
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (noI 2 ) Total occurrence -----------------
Taxa nUllber (X) X SD
Nemertea 4 400 3434 4434 Nuatoda 64 1000 54950 25016 Turbellaria 9 400 7727 11047 ~Hl~b limli~Q19 Oligochaeta
1 37
100 1000
859 31769
2715 19006
i~Qyh il(~~ bHtlQSlheln Yl Bivalvia
4 4
20
200 300 400
3434 3434
17172
8215 6003
26541 ~e(ijY l bQ~dlH sp
26 1
700 100
22324 859
25662 2715
~Q[QQhil iQ sectjgUell HD Heleidae larvae
418 20
1
1000 800 100
358895 17172
859
129443 12799 271 5
Mean number of organismssample 609 Standard deviation 175
nean num b er 0 f organIsms 1 111 2 522887 Standard deviation 150164
H= 176 SD= 051 SR= 1 30 J= 047
A-44
I I
I
I
STATION SS
Date 29 August 1984 Depth 21 1
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (no2) Total occurrence
Taxa nUllber (X) x S D
Nematoda ISO 1000 128790 37969 Turbellaria 1 100 859 271 5 Oligochaeta 48 1000 41213 16088 ~i~g~sect~~l iQ~~mgi bi~QQg~gb~sect ~i~nsect
10 14
600 600
eSB6 12020
9050 14137
Bivalvia 4 200 3434 7240 ~Q[Q~Yl niQaa Ostracoda
15 7
700 SOO
12879 6010
15806 7069
bmQg~~~b~ SPa 14 800 12020 8295 ~g[gaby mgni sect~g~~Qn ~ngnai Chironomid larvae
IB4 25 9
1000 900 700
157982 21465
7727
35563 16810 6335shy
Mean number of organismssample 481 Standard deviation B6
2Mean number 0 f organlsms m 412987 Standard deviation 74131
H= 24S SD= 074 SR= 1 23 J= 068
A-45
STATION 45 Date 14 September 1984 Depth 61 11
Salinity (bottom) 03 ppt Temperature (bottom) IB4 C No of samples 10
---------------------------------~----------------------------------------
Taxa TotalnUlllDer
Frequency occ~~~ence
Density (no 2) -----X-------sect7B
Nematoda 189 1000 162275 85233 t1tQ SPa
Turbellaria 2 2
200 100
171 7 171 7
3620 5430
~~~nIng limoifQl t1QQQDi~ flQriQ Oligochaeta
5 19
142
400 800
1000
4293 1631 3
121921
6071 12442 30504
~QQifYl mDl~D bimoQpoundt1hgr Spa Cumacea
19 184
2
800 1000 200
1631 3 157982
171 7
130B4 69541 3620
~Q[QnniYm ~~lmQDi Harpacticoida
118 1
1000 100
10131 5 B59
43367 2715
sectfQIIQD fOQgO Chironomid larvae
1780 1
1000 100
1528308 859
673586 2715
Mean number of organismssample 2464 Standard deviation 874
M ean num b er f 20 organlsms 2115590 Standard deviation 750305
H= 151 SD= 046 SR= 1 07 J= 041
A-46
STATION 18 Date 14 September 1984 Depth 21 III
Salinity (bottom) 01 ppt Temperature (botto) 182 C No of samples 10
Frequency DenSity (nom 2 ) Total occurrence ---------------- shy
Taxa nUlDber (i) X SD
Nemertea 1 100 859 271 5 Nematoda 186 1000 159700 44925 Turbellaria 16 400 13738 20717 ~~Dth~~ limni~Ql Oligochaeta
13 55
700 900
11162 47223
9096 30085
~Q~ei~Yl nil~Qi~ 17 900 14596 7069 bimDg~lbg[ Spa b 500 5152 6003 ~Q[Q2niY ~lgQi~ Harpacti coi da
562 2
1000 200
482533 171 7
136766 3620
sectpoundQttQ~Q~ ~n~ni 791 1000 679153 324290
Mean number of organismssample 1649 Standard deviation 447
I 211ean nUll ber 0 f organIsms I 1415831 Standard deviation 384136
H= 179 SD= 064 SR= 084 J= 054
A-47
STATION 58 Date 14 September 1984 Depth 58 III
Salinity (bottom) 01 ppt Temperature (bottom) 191 C No of sampl es 10
-------------------------------------------~------------------------------Frequency Density (nom 2 )
Total occurrence Taxa number eX) X SD
Nemertea 1 100 859 2715 Nematoda 55 1000 47223 18658 Turbellaria 10 500 8586 11448
1 100 859 2715 Oligochaeta 41 1000 35203 17850 ~~iQQ~~gll iu1g[m~i ~Q[Q~Yl nilD bimnQ~Y~h[ Spa ~Q[Q~hiYm lmgui sectpoundQilg1D poundU2D Chironomid larvae
4 10
2 277
23 4
100 500 200
1000 700 300
3434 8586 171 7
237832 19748 3434
10861 11448 3620
50561 21051 6003
Mean number of organismssample 428 Standard deviation 51
M b f 2ean num er 0 organIsms III 367481 Standard deviation 43743
H= 179 SD= 055 SR= 114 J= 052
A-48
I I
STATION SS Date 14 September 1984 Depth 21 II
Salinity (bottom) 01 ppt Temperature (bottom) 190 C No of samples 10
--------------------------------------------------------------------~-----
Frequency Density (no1I2) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 102 1000 87577 39200 Oligochaeta 34 700 29192 31142 ~iQ2Y~y1 int(mgi~ bithQgl~en~ Yi(gDsect ~Q(~i~Y m~DilgDsecti~ bimDQamp~1h(sect sp ~2(QQhiY slmQD 2poundQiiQlsD ~sD~g~nsecti Chironomid larvae
36 18 16 17
100 16
3
1000 600 800 700
1000 800 300
30910 15455 13738 14596 85860 13738 2576
157BO 20953 10078 14621 32126 10861 4147
Mean number of organismssample 342 Standard deviation 97
2Mean nUllber 0 f organlsms m 293641 Standard deviation 83617
H= 262 SD= 079 SR= 095 J= 083
A-49
Appendix B--Sediment particle size and organic content of the Cathlamet Bay
benthic invertebrate sites 13 March through 14 September
1984
iii
1
Station 18a 48 54 57
Survey 1 1 1 1
Month March March March March
Day 13 13 13 13
Particle size (mm) Phib Percent by weight
gt 40 -2 000 000 000
20- 40 -1 000 000 000
10- 20 0 000 009 000
05- 10 1 018 1079 032
025- 050 2 545 7583 2468
0125- 025 3 8731 1225 6783
00625-0125 4 491 037 657
lt0625 (5-12) 216 067 060
Organic Content 160 116 128
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
b Phi= -log2(sediment particle diameter in mm)
B-1
Station 18a 48 54 57
Survey 2 2 2 2
Month April April April April
Day 5 5 5 5
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 003 093 000
05shy 10 1 005 31 75 023
025shy 050 2 087 5904 2368
0125- 025 3 6316 750 7155
00625-0125 4 3056 026 427
lt0625 (5-12) 533 052 028
Organic Content 081 077 065
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-2
Station 45 55 58
Survey 3 3 3 3
Month April April April April
Day 18 18 18 18
Particle size (mm)
gt 40
Phi
-2
Percent by weight
000 000 000
20shy 40 -1 000 000 000
10shy 20 0 005 009 004
05shy 10 1 010 027 013
025shy 050 2 015 095 225
0125- 025 3 097 536 6111
00625-0125 4 453 2821 2205
lt0625 (5-12) 9420 6511 1442
Organic Content 31 42 14
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-3
Station 18a 45 55 58
Survey 4 4 4 4
Month May May May May
Day 4 4 4 4
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 021
05shy 10 1 000 065 063
025shy 050 2 012 370 230
0125- 025 3 091 4099 4696
00625-0125 4 322 3650 3052
lt0625 (5-12) 9575 1810 1939
Organic Content 330 180 160
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-4
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
5
May
17
000
000
005
016
217
5862
2729
1170
100
45 55 58
5 5 5
May May May
17 17 17
Percent by weight
000 000
000 000
005 008
113 031
325 274
1903 5613
2784 2401
4870 1672
240 110
000
000
000
010
020
079
397
9494
390
B-5
Station 18al 45 55 58
Survey 6 6 6 6
Month June June June June
Day 6 6 6 6
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 020
05shy 10 1 005 051 027
025shy 050 2 005 301 1 79
0125- 025 3 074 3189 5404
00625-0125 4 599 4118 2885
lt0625 (5-12) 9317 2332 1485
Organic Content 340 240 150
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-6
Station
Survey
Month
Day
Particle size Cmm) Phi
gt 40 -2
20shy 40 -1
10shy 20 a
05shy 10 1
025shy 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
7
June
18
000
000
005
029
138
3917
4143
1768
180
45
7
June
18
55 58
7 7
June June
18 18
Percent by weight
000
000
000
010
020
080
427
9464
310
000 000
000 000
000 007
011 022
057 190
957 5286
3023 2642
5957 1853
1 70 110
B-7
Station 18al 45 55 58
Survey 8 8 8 8
Month July July July July
Day 2 2 2 2
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 006 002 006
05shy 10 1 006 0l3 023
025shy 050 2 017 088 171
0125- 025 3 074 2712 5365
00625-0125 4 552 3892 3081
lt0625 (5-12) 9345 3294 l354
Organic Content 410 210 160
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-8
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
9
July
17
000
000
003
013
130
4294
4434
1127
130
45
9
July
17
Percent
000
000
000
006
012
051
046
9885
290
55
9
July
17
by weight
000
000
019
048
091
628
3616
5597
030
58
9
July
17
000
000
004
022
158
5017
3148
1650
140
B-9
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18al
10
August
1
45
10
August
1
55
10
August
1
58
10
August
1
Percent by weight
000 000
000 004
001 004
009 018
018 088
098 306
049 2510
9824 7070
000
005
045
763
3604
4495
932
156
100 190 060
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-10
Station 18 45 55 58
Survey 11 11 11 11
Month August August August August
Day 17 17 17 17
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000 000
20- 40 -1 005 000 000 000
10- 20 0 021 003 000 210
05- 10 1 064 009 000 159
025- 050 2 226 027 045 2656
0125- 025 3 3259 131 712 3719
00625-0125 4 4327 195 1737 1159
lt0625 (5-12) 2098 9635 7506 2097
Organic Content 210 300 160 100
Ii I
B-11
Station
Survey
Month
Day
Particle size (mm) Phi
gt40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
12
August
29
000
000
012
046
186
3465
4498
17 93
241
45
12
August
29
55 58
12 12
August August
29 29
Percent by weight
000
000
002
009
026
118
189
9656
540
000 000
000 000
003 011
011 028
055 1013
859 5033
1596 1827
7476 2089
1 70 120
B-12
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
_-------------------- shy
B-13
Frequency Density (no2) occurrence -----------------
Taxa (7) X SD
Nematoda 104 1000 89294 47409 Turbell ar i a 1 100 859 2715 ~~~nQ~sect imni~Q~ tjQQsectQlis flQig~ Oligochaeta
2 1
297
100 100
1000
171 7 859
255004
5430 271 5
146273 ~~i~QYsect~Y~lls ilr2is gQrQi~y~ IDDilDia
24 4
600 300
20606 3434
27212 6003
Ostracoda 2 200 171 7 3620 biDQSy~b~C~ sp M~QYsectisect m~r~~Qi ~QrQeniy QD Harpacticoida
157 1 1 1
900 100 100 100
134800 859 859 859
73197 2715 2715 2715
sectpoundQttQDs SsDQD 113 900 97022 61656
STATION 45 Date 2 July 1984 Depth 61 III
Salinity (bottom) 00 ppt Temperature (bottom) No of samples 10
172 C
Mean number of organismssample 708 Standard deviation 339
M ean num b er f 20 organisms 607889 Standard deviation 290B22
H= 216 SD= 073 SR= 1 27 J= 058
1-26
STATION 18 Date 2 July 1984 Depth 24 WI
Sal inity (bottom) 00 ppt Temperature (bottom) 172 C No of samples 10
--------------------------------~-----------------------------------------Frequency Density (nom2)
Total occurrence Taxa number (7) X SD
Nematoda 202 1000 173437 113532 ~~~nih~sect mnpoundQ~ Oligochleta
4 102
400 1000
3434 87577
4434 54873
~~igQYsect~Y~12 inl~rmgi2 ~Q[~poundYl~ m~ni~nsectisect bimnQpoundylh~[~ Spa
115 4
15
900 300 900
98739 3434
12879
100720 6003 9274
~Q[QQniY~ sect~QDi~ 55 900 47223 40525 Harpacticoida 1 100 859 2715 sectpoundQiiQlD SDg~DEisect Chironomid larvae
2 6
200 400
1717 5152
3620 7240
Hymenoptera 1 100 859 2715 Hydracarina 1 100 859 2715
Mean number of organismssample 508 Standard deviation 253
2Mean num ber 0 f organIsms m 436169 Standard deviation 217580
H= 225 SD= 074 SR= 1 22 J= 063
A-27
STATION 58 Date 2 July 1984 Depth 58 1
Salinity (bottom) 00 ppt Temperature (bottom) IBO C No of samples 10
Frequency Density (no2) Total occurrence
Taxa number ltX) i SD
Nematoda 151 1000 129649 42729 Turbellaria 1 100 859 2715 01 i gochaeta 41 1000 35203 22698 ~~i~e~~~ int~~m~~ 3 200 2576 5795 btbQglYRhY~ Yir~n~ ~e~~ampy mni~niii bimQeamp~tb~ sp ~e~eQhiY ~mQni Chironomid larvae
1 4 2
68 1
100 300 200
1000 100
859 3434 171 7
58385 859
271 5 6003 3620
1557 1 2715
Mean number of organisassample 272 Standard deviation
I 2Mean num ber 0 f organIsms I 233539 Standard deviation 62546
H = 1 69 SD= 061 SR= 099 J= 053
A-28
73
STATION 55 Date 2 July 1984 Depth 15 III
Salinity (bottom) 00 ppt Temperature (bottom) 182 C No of samples 10
Frequency Density (nom2) occurrence
Taxa (X) X SD
Nematoda 184 1()00 157982 5264B Turbellaria 1 100 859 271 5 Oligochaeta ~~iQQ~sect~Y~ll~ n~[~~Qi~ bitnggYQDYsect Yi[~nsect ~QrQipoundM2 m2ni~nsectisect bimnQpoundYn~[2 sp ~QrQQhiM Qni Harpacticoida
91 2 1 B 2
96 2
1000 200 100 500 200
1000 200
78133 171 7 859
6869 171 7
82426 1111
26058 3620 271 5 1890 3620shy
25980 3620
ChirDnomid larvae 5 400 4293 6071 Chironolllid pupae 1 100 859 2715
Mean number of organismssample 393 Standard deviation 53
2t1ean nUllber Df organlsms III 337430 Standard deviatiDn 45080
H= 187 SD= 067 SR= 116 J= 054
A-29
STATION 45 Date 17 Jul y 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (X) X SD
Nematoda 215 1000 184599 45837 ~~n~b~~ imDipoundQ Qe~Qni fllHi2
3 1
300 100
2576 859
4147 2715
Oligochaeta 305 1000 261873 147955 ~~iQQY~k~ in~rm~2i ~Qr~ipoundYl IDniln~i~ Ostracoda
17 1 2
500 100 200
14590 859
171 7
22554 2715 3620
bmnQpound~ihr sp ~QCQQhiY ~lQD~
176 1
1000 100
151114 859
57125 2715
Harpacticoida 4 300 3434 6003 sectQ~~Qn poundnQnai~ Chironomid larvae
91 5
1000 400
78133 4293
61310 6071
Mean number of organismssample 821 Standard deviation 275
M b f 2ean num er 0 organlsms m 70491 1 Standard deviation 236369
H= 215 SD= 073 SR= 114 J= 060
A-30
STATION 18 Date 17 Jul y 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom 203 C No of samples 10
Frequency Density (001 2 Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 339 1000 291065 119140 Turbellaria 3 200 2576 5795 ~~2~b~~ limnipoundQ12Oligochaeta
4 18S
300 1000
3434 161417
6003 89393
~~iQQy~~~ls in~(ID~Qi bim~Qampy~bg(2 Spa
34 16
800 700
29192 1373B
22967 15252
~g(gebi~m ~21mQni2 Harpacticoida
52 3
1000 200
44647 2576
25212 5795
2ampQ11Q1202 ampS02Qg~2i2 Chironomid larvae
18 10
700 700
15455 8586
13904 701 0
Mean number of organi$mssample 667 Standard deviation IBB
H ean nurn b er 1 20 f organIsms m 572686 Standard deviation 161750
H = 1 99 SD= 065 SR= 090 J= 060
A-31
STATION 58 Date 17 July 1984 Depth 55 AI
Salinity (bottom) 00 ppt Temperature (bottom) 197 C No of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nellatoda 173 1000 14853B 66390 Turbellaria 1 100 859 271 5 ~~~n~hu ini~QA Oligochaeta
1 46
100 1000
859 39496
2715 26293
~gipoundQy~~ygl2 in~rJg~i~ b1nQglYRnY~ Yi( Bivalvia
6 2 1
400 200 100
5152 1717 859
8295 3620 271 5
ei~ IDnH~n~i~ 2 200 171 7 3620 Ostracoda 1 100 959 271 5 biIDQHlh~( Spa ~Q(QRbim ~21Qnisect Diptera pupae
1 94
1
100 1000 100
859 80708
859
2715 35332 2715
Heleidae 1arvae 5 500 4293 4525 Chironomid larvae 1 100 859 2715
Mean number of organismssample 335 Standard deviatiDn 113
Mean number of organismsRI2 287631 Standard deviation 97413
H= 1 86 SO= 064 SR= 155 J= 049
A-32
STATION 55 Date 17 July 1984 Depth 18 m Sali nity (bottom) 00 ppt TeAlperature (bottom) 199 C No of samples 10
Frequency Density (nom2 ) occurrence
Taxa (X) x S D
Nematoda 61 1000 52375 33972 Turbellaria 1 100 859 2715 Oligochaeta 24 900 20606 11590 ~~i2QY~k~~1 iOi[2 bimDQ~xlb~r sp ~Q[QQhi~ sectgni~ Chironomid larvae
3 1
38 3
200 100
1000 300
2576 859
32627 2576
5795 2715
19326 4147
Mean number of organismssample 131 standard deviation 54
M b f 2ean num er 0 organIsms 112477 Standard deviation 46757
H= 184 SD= 066 SR= 085 J= 065
bull
A-33
STATION 45 Date 1 August 1984 Depth 58 m Sal i nity (bottoll) 03 ppt Temperature (bottom) 203 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa nUllber (X) X SD
Nematoda 145 1000 124417 52344 Turbellaria 1 100 859 2715 Mmth~sect iHpoundQ~ Q~~Qi ilQ[i9Oligochaeta
5 3
196
500 300
1000
4293 2576
168286
4525 4147
91064 ~igQYsect~~li int9i Ostracoda
2 3
100 300
171 7 2576
5430 4147
bimnQpoundtl sp ~Q[Q2hiY sectlQni~
240 6
1000 600
206064 5152
73526 4434
sectpoundQtQl poundngnai~Helei dae larvae
1862 1
1000 100
1598713 859
966134 271 ~
Mean number of organismssample 2464 Standard deviation 1156
211 ean num ber 0 f organIsms II 2115590 Standard deviation 992518
H= 124 SD= 041 SR= 089 J= 036
A-34
STATION 1S Date 1 August 1984 Depth 24 II
Salinity (bottom) 00 ppt Temperature (bottom) 198 C No of samp I es 10
Frequency Density (nom2) occurrence ---------------- shy
Taxa (X) X S D
Nuertea 1 100 859 2715 Nellatolllorpha 1 100 859 2715 Nematoda 248 1000 212933 108288 Turbellaria 4 400 3434 4434 ~untb~la Hli~g Oligochaeta
4 206
400 1000
3434 176872
4434 75309
~~igQYli~dli i[t~(gi~ ~QtQpound l binQ~ybt2 sp ~2l~bi Q[i ~2tlgtQ(ila tirisect sectpoundQtel poundl9lla Chironomid larvae
10 1
20 205
1 574
9
500 100 800
1000 100
1000 400
8586 859
17172 176013
859 492836
7727
10709 271 5
14021 48104
271 5 150531
13696
Mean number of organismssample 1284 Standard deviation 290
M b f I 2ean nurn er 0 organIsms III 1102442 Standard deviation 2488B5
H= 211 SD= 071 SR= 1 16 J= 057
A-35
STATION 58 Date 1 August 1984 Depth 55 m Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samp 1es 10
Frequency Densi ty _ ltnom2 ) Total occurrence
Taxa number (7) X SD
Nemertea 1 100 859 2715 Nematoda 22 900 18889 15036 Turbellaria 1 100 859 2715 Oligochaeta 19 700 16313 17385 biiQQgl~QhY~ YiCg~~ 2 200 171 7 3620 ~Q[~i~~l~ m2nil~n2i2 ~Q[QehiYm ~lmQni2
4 164
300 1000
3434 140810
6003 103048
Heleidae larvae 8 500 6869 8868
Mean number of organismssample 221 Standard deviation 111
I 2Mean num ber 0 f organIsms m 189751 Standard deviation 95391
H = L 37 SD= 043 SR= 090 J= 046
A-36
STATION 55 Date 1 August 1984 Depth 15 m Salinity (bottoll) 01 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (i ) X SD
Nemertea 1 100 859 2715 Neutoda 122 1000 104749 7394B Turbellaria 4 300 3434 6003 ~~~~~nt~ secte~poundQa~ Oligochaeta
1 118
100 1000
859 101315
2715 61223
~giQgY~k~~l iot~[m~Qi btbQg~2b~ Y[O ~grQipound~ ~nl~ni b~ngpound~tb~[ Spa
3 1 5 1
200 100 500 100
2576 859
4293 859
5795 2715 4525 2715
~Q[QebiYm ~mQoi sect~QttQ~ ~OQOi Heleidae larvae
42 2 2
800 200 100
36061 171 7 171 7
21341 3620 5430
Chironomid larvae 4 400 3434 4434
Mean number of organismssapIe 306 Standard deviation 169
M b f I 2ean nurn er 0 organIsms m 262732 Standard deviation 145101
H = 198 SD= 067 SR= 1 45 J= 054
A-37
~-- --------------~~-------------
STATION 45 Date 17 August 1984 Depth 61 1
Salinity (bottom) 10 ppt Temperature (bottom) 210 C No of samp 1es 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nematoda 240 1000 206064 130213 ~~h~sect limQ tjQ~~Hi~ fQ[i~~ Oligochaeta
31 2
245
400 100
1000
26617 1717
210357
75228 5430
121374 babgglYQbl~ Yi[~sect 1 100 859 2715 Ostracoda 1 100 859 271 5 biQ~xtb~[ Spa ~~Q~~isect ~[pound~Qisect ~Qgebi HQOi
333 2
143
1000 200
1000
28591 4 171 7
1227BO
106553 3620
106860 sectpoundQUg~ poundg~nsectisect 1738 1000 1492247 68441 7
Mean number of organismssample 2736 Standard deviation 944
M b f I 2ean num er 0 organlslls m 2349130 Standard deviation 810600
H= 172 SD= 056 SR= 079 J= 052
A-38
STATION 18 Date 17 August 1984 Depth 27 III
Sal i ni ty (botto) 01 ppt Temperature (bottom) 214 C No of samples 10
Frequency Density (nom 2 ) occurrence
Taxa (X) X SD
Nematoda 186 1000 159700 62468 ~tgt SPa 2 100 171 7 5430 Turbellaria 8 400 6869 8868 ~~ntbg2 imnipoundQ 12 700 10303 11304 Oligochaeta 283 1000 242984 90509 ~~iQQY~~Y~lls inlgtmggisBivalvia
4 1
400 100
3434 859
4434 271 5
~Qt~i~Y nilnsectisectbimnQpoundttbg[s SPa ~QtQQbi~ islmQDi2
1 17
286
100 900
1000
859 14596
245560
271 5 10747 83461
sectpoundetteln poundDsggnsectisect Chironomid larvae
526 4
1000 3Q0
451624 3434
179610 6003
Mean number of organismssapIe 1330 Standard deviation 162
Mean nurn ber I 20 f organIsms m 1141938 Standard deviation 139389
H= 214 SD= 073 SR= 1 06 J= 060
A-39
STATION 58 Date 17 August 1984 Depth 55 II
Salinity (bottom) 01 ppt Temperature (bottom) 220 C ND of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (7) x S D
Nematoda 68 1000 58385 27689 Turbellar i a 4 200 3434 8295 Oligochaeta 19 800 16313 13084 ~~i~Q~k~~l~ in~~[m~i bitUQ9Y2bYa Yi[~na Bivalvia
3 3 4
300 300 300
2576 2576 3434
4147 4147 6003
gQ[QipoundYl~ mnilDa 1 100 859 2715 binQpoundY~[ sp gQ[Q2UY a~mgnia sect~Qtgl~n ~n~~ni
2 338
6
100 1000 400
171 7 290207
5152
5430 56636 7240
Mean number of organismssample 448 Standard deviation 72
W b f 2lean num er 0 organlsms II 384653 Standard deviation 61988
H = 1 27 SD= 041 SR= 1 02 J= 038
A-40
STATION 55 Date 17 August 1984 Depth 18 m Salinity (bottom) 00 ppt Temperature (bottol) 223 C No of samples 10
Frequency Density (nom 2 ) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 291 1000 249853 118104 Turbellaria 1 100 859 2715 M~ntb~ mni~Q Oligochaeta
1 47
100 1000
859 40354
2715 28347
~~iQQ~sectkY~ll int~[m~gi bitbQQ1YSDY Yi(gn Bivalvia
25 12
6
900 500 400
21465 10303 5152
1231 0 18459 7240
~Q~2ipoundY mnil~ni Ostracoda
11 8
400 600
9445 6869
12442 6773
bmnQpoundYb~r~ SPa 52 1000 44647 19746 ~QrQsbY lmgnisectsQiielo snQ~ni~ Chironomid larvae
43 5
15
1000 400 BOO
36920 4293
12879
21436 6071 8344
Mean number of organismssample 517 Standard deviation 174
M b f I 2ean num er 0 organlsms m 443896 Standard deviation 149431
W = 228 SD= 065 SR= 1 33 J= 062
A-41
STATION 45 Date 29 August 1984 Depth 55 III
Salinity (bottom) 07 ppt Temperature (bottom) 199 C No of samples 10
Frequency Density (noI 2) Total occurrence
Taxa number (X) X SD
Nematoda 192 1000 164851 98380 ~sntbsect limnipoundQlDligochaeta
2 198
200 1000
171 7 170003
3620 67339
~Q[eipoundYls msniln~isect Ostracoda
1 4
100 400
859 3434
2715 4434
bimnQpoundytb[s Spa gQ[Qeniy sect21QOi~ sectpoundQttQlsO poundsOsggOi
164 87
2468
1000 1000 1000
140810 74698
2119025
39283 39460
840890
Mean number of organismssample 311 6 Standard deviation 101 1
ill b f 2nean nUll er 0 organIsms 2675398 Standard deviation 8682B8
W= 116 SD= 036 SR= 060 J= 039
A-42
STATION 18 Date 29 August 1984 Depth 30 bull Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samples 10
Total Frequency occurrence
Densi ty 2
(nom )
Taxa number (~ ) x S D
Nematoda 150 1000 128790 28905 Turbellaria 7 400 6010 9096 ~nh imni~Qj Oligochaeta ~~i~2Y~k~~1 ini~CIDgii bih2g~Qb~ Yi(~U2 Bivalvi a
B 145
1 1 2
600 1000
100 100 200
6869 124497
859 859
171 7
677 3 84732
271S 2715 3620
~Q[Qi~yli miDllgni bimn2pound~ih~C sp ~QtQehiY imQUia Harpacticoida
7 7
265 1
500 300
1000 100
6010 601 0
227529 859
8145 10747
139462 2715
sect~QtiQDi ~Q~Q~i~ Chironomid larvae
2471 2
1000 200
2121601 171 7
1063112 3620
Mean number of organismssample 3067 Standard deviation 121 9
2Mean number 0 f organIsms m 2633326 standard deviation 1046718
H = 1 09 SD= 034 SR= 1 04 J= 029
A-43
STATION 58 Date 29 August 1984 Depth 55 111
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (noI 2 ) Total occurrence -----------------
Taxa nUllber (X) X SD
Nemertea 4 400 3434 4434 Nuatoda 64 1000 54950 25016 Turbellaria 9 400 7727 11047 ~Hl~b limli~Q19 Oligochaeta
1 37
100 1000
859 31769
2715 19006
i~Qyh il(~~ bHtlQSlheln Yl Bivalvia
4 4
20
200 300 400
3434 3434
17172
8215 6003
26541 ~e(ijY l bQ~dlH sp
26 1
700 100
22324 859
25662 2715
~Q[QQhil iQ sectjgUell HD Heleidae larvae
418 20
1
1000 800 100
358895 17172
859
129443 12799 271 5
Mean number of organismssample 609 Standard deviation 175
nean num b er 0 f organIsms 1 111 2 522887 Standard deviation 150164
H= 176 SD= 051 SR= 1 30 J= 047
A-44
I I
I
I
STATION SS
Date 29 August 1984 Depth 21 1
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (no2) Total occurrence
Taxa nUllber (X) x S D
Nematoda ISO 1000 128790 37969 Turbellaria 1 100 859 271 5 Oligochaeta 48 1000 41213 16088 ~i~g~sect~~l iQ~~mgi bi~QQg~gb~sect ~i~nsect
10 14
600 600
eSB6 12020
9050 14137
Bivalvia 4 200 3434 7240 ~Q[Q~Yl niQaa Ostracoda
15 7
700 SOO
12879 6010
15806 7069
bmQg~~~b~ SPa 14 800 12020 8295 ~g[gaby mgni sect~g~~Qn ~ngnai Chironomid larvae
IB4 25 9
1000 900 700
157982 21465
7727
35563 16810 6335shy
Mean number of organismssample 481 Standard deviation B6
2Mean number 0 f organlsms m 412987 Standard deviation 74131
H= 24S SD= 074 SR= 1 23 J= 068
A-45
STATION 45 Date 14 September 1984 Depth 61 11
Salinity (bottom) 03 ppt Temperature (bottom) IB4 C No of samples 10
---------------------------------~----------------------------------------
Taxa TotalnUlllDer
Frequency occ~~~ence
Density (no 2) -----X-------sect7B
Nematoda 189 1000 162275 85233 t1tQ SPa
Turbellaria 2 2
200 100
171 7 171 7
3620 5430
~~~nIng limoifQl t1QQQDi~ flQriQ Oligochaeta
5 19
142
400 800
1000
4293 1631 3
121921
6071 12442 30504
~QQifYl mDl~D bimoQpoundt1hgr Spa Cumacea
19 184
2
800 1000 200
1631 3 157982
171 7
130B4 69541 3620
~Q[QnniYm ~~lmQDi Harpacticoida
118 1
1000 100
10131 5 B59
43367 2715
sectfQIIQD fOQgO Chironomid larvae
1780 1
1000 100
1528308 859
673586 2715
Mean number of organismssample 2464 Standard deviation 874
M ean num b er f 20 organlsms 2115590 Standard deviation 750305
H= 151 SD= 046 SR= 1 07 J= 041
A-46
STATION 18 Date 14 September 1984 Depth 21 III
Salinity (bottom) 01 ppt Temperature (botto) 182 C No of samples 10
Frequency DenSity (nom 2 ) Total occurrence ---------------- shy
Taxa nUlDber (i) X SD
Nemertea 1 100 859 271 5 Nematoda 186 1000 159700 44925 Turbellaria 16 400 13738 20717 ~~Dth~~ limni~Ql Oligochaeta
13 55
700 900
11162 47223
9096 30085
~Q~ei~Yl nil~Qi~ 17 900 14596 7069 bimDg~lbg[ Spa b 500 5152 6003 ~Q[Q2niY ~lgQi~ Harpacti coi da
562 2
1000 200
482533 171 7
136766 3620
sectpoundQttQ~Q~ ~n~ni 791 1000 679153 324290
Mean number of organismssample 1649 Standard deviation 447
I 211ean nUll ber 0 f organIsms I 1415831 Standard deviation 384136
H= 179 SD= 064 SR= 084 J= 054
A-47
STATION 58 Date 14 September 1984 Depth 58 III
Salinity (bottom) 01 ppt Temperature (bottom) 191 C No of sampl es 10
-------------------------------------------~------------------------------Frequency Density (nom 2 )
Total occurrence Taxa number eX) X SD
Nemertea 1 100 859 2715 Nematoda 55 1000 47223 18658 Turbellaria 10 500 8586 11448
1 100 859 2715 Oligochaeta 41 1000 35203 17850 ~~iQQ~~gll iu1g[m~i ~Q[Q~Yl nilD bimnQ~Y~h[ Spa ~Q[Q~hiYm lmgui sectpoundQilg1D poundU2D Chironomid larvae
4 10
2 277
23 4
100 500 200
1000 700 300
3434 8586 171 7
237832 19748 3434
10861 11448 3620
50561 21051 6003
Mean number of organismssample 428 Standard deviation 51
M b f 2ean num er 0 organIsms III 367481 Standard deviation 43743
H= 179 SD= 055 SR= 114 J= 052
A-48
I I
STATION SS Date 14 September 1984 Depth 21 II
Salinity (bottom) 01 ppt Temperature (bottom) 190 C No of samples 10
--------------------------------------------------------------------~-----
Frequency Density (no1I2) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 102 1000 87577 39200 Oligochaeta 34 700 29192 31142 ~iQ2Y~y1 int(mgi~ bithQgl~en~ Yi(gDsect ~Q(~i~Y m~DilgDsecti~ bimDQamp~1h(sect sp ~2(QQhiY slmQD 2poundQiiQlsD ~sD~g~nsecti Chironomid larvae
36 18 16 17
100 16
3
1000 600 800 700
1000 800 300
30910 15455 13738 14596 85860 13738 2576
157BO 20953 10078 14621 32126 10861 4147
Mean number of organismssample 342 Standard deviation 97
2Mean nUllber 0 f organlsms m 293641 Standard deviation 83617
H= 262 SD= 079 SR= 095 J= 083
A-49
Appendix B--Sediment particle size and organic content of the Cathlamet Bay
benthic invertebrate sites 13 March through 14 September
1984
iii
1
Station 18a 48 54 57
Survey 1 1 1 1
Month March March March March
Day 13 13 13 13
Particle size (mm) Phib Percent by weight
gt 40 -2 000 000 000
20- 40 -1 000 000 000
10- 20 0 000 009 000
05- 10 1 018 1079 032
025- 050 2 545 7583 2468
0125- 025 3 8731 1225 6783
00625-0125 4 491 037 657
lt0625 (5-12) 216 067 060
Organic Content 160 116 128
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
b Phi= -log2(sediment particle diameter in mm)
B-1
Station 18a 48 54 57
Survey 2 2 2 2
Month April April April April
Day 5 5 5 5
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 003 093 000
05shy 10 1 005 31 75 023
025shy 050 2 087 5904 2368
0125- 025 3 6316 750 7155
00625-0125 4 3056 026 427
lt0625 (5-12) 533 052 028
Organic Content 081 077 065
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-2
Station 45 55 58
Survey 3 3 3 3
Month April April April April
Day 18 18 18 18
Particle size (mm)
gt 40
Phi
-2
Percent by weight
000 000 000
20shy 40 -1 000 000 000
10shy 20 0 005 009 004
05shy 10 1 010 027 013
025shy 050 2 015 095 225
0125- 025 3 097 536 6111
00625-0125 4 453 2821 2205
lt0625 (5-12) 9420 6511 1442
Organic Content 31 42 14
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-3
Station 18a 45 55 58
Survey 4 4 4 4
Month May May May May
Day 4 4 4 4
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 021
05shy 10 1 000 065 063
025shy 050 2 012 370 230
0125- 025 3 091 4099 4696
00625-0125 4 322 3650 3052
lt0625 (5-12) 9575 1810 1939
Organic Content 330 180 160
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-4
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
5
May
17
000
000
005
016
217
5862
2729
1170
100
45 55 58
5 5 5
May May May
17 17 17
Percent by weight
000 000
000 000
005 008
113 031
325 274
1903 5613
2784 2401
4870 1672
240 110
000
000
000
010
020
079
397
9494
390
B-5
Station 18al 45 55 58
Survey 6 6 6 6
Month June June June June
Day 6 6 6 6
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 020
05shy 10 1 005 051 027
025shy 050 2 005 301 1 79
0125- 025 3 074 3189 5404
00625-0125 4 599 4118 2885
lt0625 (5-12) 9317 2332 1485
Organic Content 340 240 150
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-6
Station
Survey
Month
Day
Particle size Cmm) Phi
gt 40 -2
20shy 40 -1
10shy 20 a
05shy 10 1
025shy 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
7
June
18
000
000
005
029
138
3917
4143
1768
180
45
7
June
18
55 58
7 7
June June
18 18
Percent by weight
000
000
000
010
020
080
427
9464
310
000 000
000 000
000 007
011 022
057 190
957 5286
3023 2642
5957 1853
1 70 110
B-7
Station 18al 45 55 58
Survey 8 8 8 8
Month July July July July
Day 2 2 2 2
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 006 002 006
05shy 10 1 006 0l3 023
025shy 050 2 017 088 171
0125- 025 3 074 2712 5365
00625-0125 4 552 3892 3081
lt0625 (5-12) 9345 3294 l354
Organic Content 410 210 160
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-8
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
9
July
17
000
000
003
013
130
4294
4434
1127
130
45
9
July
17
Percent
000
000
000
006
012
051
046
9885
290
55
9
July
17
by weight
000
000
019
048
091
628
3616
5597
030
58
9
July
17
000
000
004
022
158
5017
3148
1650
140
B-9
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18al
10
August
1
45
10
August
1
55
10
August
1
58
10
August
1
Percent by weight
000 000
000 004
001 004
009 018
018 088
098 306
049 2510
9824 7070
000
005
045
763
3604
4495
932
156
100 190 060
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-10
Station 18 45 55 58
Survey 11 11 11 11
Month August August August August
Day 17 17 17 17
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000 000
20- 40 -1 005 000 000 000
10- 20 0 021 003 000 210
05- 10 1 064 009 000 159
025- 050 2 226 027 045 2656
0125- 025 3 3259 131 712 3719
00625-0125 4 4327 195 1737 1159
lt0625 (5-12) 2098 9635 7506 2097
Organic Content 210 300 160 100
Ii I
B-11
Station
Survey
Month
Day
Particle size (mm) Phi
gt40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
12
August
29
000
000
012
046
186
3465
4498
17 93
241
45
12
August
29
55 58
12 12
August August
29 29
Percent by weight
000
000
002
009
026
118
189
9656
540
000 000
000 000
003 011
011 028
055 1013
859 5033
1596 1827
7476 2089
1 70 120
B-12
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
_-------------------- shy
B-13
STATION 18 Date 2 July 1984 Depth 24 WI
Sal inity (bottom) 00 ppt Temperature (bottom) 172 C No of samples 10
--------------------------------~-----------------------------------------Frequency Density (nom2)
Total occurrence Taxa number (7) X SD
Nematoda 202 1000 173437 113532 ~~~nih~sect mnpoundQ~ Oligochleta
4 102
400 1000
3434 87577
4434 54873
~~igQYsect~Y~12 inl~rmgi2 ~Q[~poundYl~ m~ni~nsectisect bimnQpoundylh~[~ Spa
115 4
15
900 300 900
98739 3434
12879
100720 6003 9274
~Q[QQniY~ sect~QDi~ 55 900 47223 40525 Harpacticoida 1 100 859 2715 sectpoundQiiQlD SDg~DEisect Chironomid larvae
2 6
200 400
1717 5152
3620 7240
Hymenoptera 1 100 859 2715 Hydracarina 1 100 859 2715
Mean number of organismssample 508 Standard deviation 253
2Mean num ber 0 f organIsms m 436169 Standard deviation 217580
H= 225 SD= 074 SR= 1 22 J= 063
A-27
STATION 58 Date 2 July 1984 Depth 58 1
Salinity (bottom) 00 ppt Temperature (bottom) IBO C No of samples 10
Frequency Density (no2) Total occurrence
Taxa number ltX) i SD
Nematoda 151 1000 129649 42729 Turbellaria 1 100 859 2715 01 i gochaeta 41 1000 35203 22698 ~~i~e~~~ int~~m~~ 3 200 2576 5795 btbQglYRhY~ Yir~n~ ~e~~ampy mni~niii bimQeamp~tb~ sp ~e~eQhiY ~mQni Chironomid larvae
1 4 2
68 1
100 300 200
1000 100
859 3434 171 7
58385 859
271 5 6003 3620
1557 1 2715
Mean number of organisassample 272 Standard deviation
I 2Mean num ber 0 f organIsms I 233539 Standard deviation 62546
H = 1 69 SD= 061 SR= 099 J= 053
A-28
73
STATION 55 Date 2 July 1984 Depth 15 III
Salinity (bottom) 00 ppt Temperature (bottom) 182 C No of samples 10
Frequency Density (nom2) occurrence
Taxa (X) X SD
Nematoda 184 1()00 157982 5264B Turbellaria 1 100 859 271 5 Oligochaeta ~~iQQ~sect~Y~ll~ n~[~~Qi~ bitnggYQDYsect Yi[~nsect ~QrQipoundM2 m2ni~nsectisect bimnQpoundYn~[2 sp ~QrQQhiM Qni Harpacticoida
91 2 1 B 2
96 2
1000 200 100 500 200
1000 200
78133 171 7 859
6869 171 7
82426 1111
26058 3620 271 5 1890 3620shy
25980 3620
ChirDnomid larvae 5 400 4293 6071 Chironolllid pupae 1 100 859 2715
Mean number of organismssample 393 Standard deviation 53
2t1ean nUllber Df organlsms III 337430 Standard deviatiDn 45080
H= 187 SD= 067 SR= 116 J= 054
A-29
STATION 45 Date 17 Jul y 1984 Depth 58 m Salinity (bottom) 00 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (X) X SD
Nematoda 215 1000 184599 45837 ~~n~b~~ imDipoundQ Qe~Qni fllHi2
3 1
300 100
2576 859
4147 2715
Oligochaeta 305 1000 261873 147955 ~~iQQY~k~ in~rm~2i ~Qr~ipoundYl IDniln~i~ Ostracoda
17 1 2
500 100 200
14590 859
171 7
22554 2715 3620
bmnQpound~ihr sp ~QCQQhiY ~lQD~
176 1
1000 100
151114 859
57125 2715
Harpacticoida 4 300 3434 6003 sectQ~~Qn poundnQnai~ Chironomid larvae
91 5
1000 400
78133 4293
61310 6071
Mean number of organismssample 821 Standard deviation 275
M b f 2ean num er 0 organlsms m 70491 1 Standard deviation 236369
H= 215 SD= 073 SR= 114 J= 060
A-30
STATION 18 Date 17 Jul y 1984 Depth 27 m Salinity (bottom) 00 ppt Temperature (bottom 203 C No of samples 10
Frequency Density (001 2 Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 339 1000 291065 119140 Turbellaria 3 200 2576 5795 ~~2~b~~ limnipoundQ12Oligochaeta
4 18S
300 1000
3434 161417
6003 89393
~~iQQy~~~ls in~(ID~Qi bim~Qampy~bg(2 Spa
34 16
800 700
29192 1373B
22967 15252
~g(gebi~m ~21mQni2 Harpacticoida
52 3
1000 200
44647 2576
25212 5795
2ampQ11Q1202 ampS02Qg~2i2 Chironomid larvae
18 10
700 700
15455 8586
13904 701 0
Mean number of organi$mssample 667 Standard deviation IBB
H ean nurn b er 1 20 f organIsms m 572686 Standard deviation 161750
H = 1 99 SD= 065 SR= 090 J= 060
A-31
STATION 58 Date 17 July 1984 Depth 55 AI
Salinity (bottom) 00 ppt Temperature (bottom) 197 C No of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (X) x S D
Nellatoda 173 1000 14853B 66390 Turbellaria 1 100 859 271 5 ~~~n~hu ini~QA Oligochaeta
1 46
100 1000
859 39496
2715 26293
~gipoundQy~~ygl2 in~rJg~i~ b1nQglYRnY~ Yi( Bivalvia
6 2 1
400 200 100
5152 1717 859
8295 3620 271 5
ei~ IDnH~n~i~ 2 200 171 7 3620 Ostracoda 1 100 959 271 5 biIDQHlh~( Spa ~Q(QRbim ~21Qnisect Diptera pupae
1 94
1
100 1000 100
859 80708
859
2715 35332 2715
Heleidae 1arvae 5 500 4293 4525 Chironomid larvae 1 100 859 2715
Mean number of organismssample 335 Standard deviatiDn 113
Mean number of organismsRI2 287631 Standard deviation 97413
H= 1 86 SO= 064 SR= 155 J= 049
A-32
STATION 55 Date 17 July 1984 Depth 18 m Sali nity (bottom) 00 ppt TeAlperature (bottom) 199 C No of samples 10
Frequency Density (nom2 ) occurrence
Taxa (X) x S D
Nematoda 61 1000 52375 33972 Turbellaria 1 100 859 2715 Oligochaeta 24 900 20606 11590 ~~i2QY~k~~1 iOi[2 bimDQ~xlb~r sp ~Q[QQhi~ sectgni~ Chironomid larvae
3 1
38 3
200 100
1000 300
2576 859
32627 2576
5795 2715
19326 4147
Mean number of organismssample 131 standard deviation 54
M b f 2ean num er 0 organIsms 112477 Standard deviation 46757
H= 184 SD= 066 SR= 085 J= 065
bull
A-33
STATION 45 Date 1 August 1984 Depth 58 m Sal i nity (bottoll) 03 ppt Temperature (bottom) 203 C No of samples 10
Frequency Density (nom2) Total occurrence
Taxa nUllber (X) X SD
Nematoda 145 1000 124417 52344 Turbellaria 1 100 859 2715 Mmth~sect iHpoundQ~ Q~~Qi ilQ[i9Oligochaeta
5 3
196
500 300
1000
4293 2576
168286
4525 4147
91064 ~igQYsect~~li int9i Ostracoda
2 3
100 300
171 7 2576
5430 4147
bimnQpoundtl sp ~Q[Q2hiY sectlQni~
240 6
1000 600
206064 5152
73526 4434
sectpoundQtQl poundngnai~Helei dae larvae
1862 1
1000 100
1598713 859
966134 271 ~
Mean number of organismssample 2464 Standard deviation 1156
211 ean num ber 0 f organIsms II 2115590 Standard deviation 992518
H= 124 SD= 041 SR= 089 J= 036
A-34
STATION 1S Date 1 August 1984 Depth 24 II
Salinity (bottom) 00 ppt Temperature (bottom) 198 C No of samp I es 10
Frequency Density (nom2) occurrence ---------------- shy
Taxa (X) X S D
Nuertea 1 100 859 2715 Nellatolllorpha 1 100 859 2715 Nematoda 248 1000 212933 108288 Turbellaria 4 400 3434 4434 ~untb~la Hli~g Oligochaeta
4 206
400 1000
3434 176872
4434 75309
~~igQYli~dli i[t~(gi~ ~QtQpound l binQ~ybt2 sp ~2l~bi Q[i ~2tlgtQ(ila tirisect sectpoundQtel poundl9lla Chironomid larvae
10 1
20 205
1 574
9
500 100 800
1000 100
1000 400
8586 859
17172 176013
859 492836
7727
10709 271 5
14021 48104
271 5 150531
13696
Mean number of organismssample 1284 Standard deviation 290
M b f I 2ean nurn er 0 organIsms III 1102442 Standard deviation 2488B5
H= 211 SD= 071 SR= 1 16 J= 057
A-35
STATION 58 Date 1 August 1984 Depth 55 m Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samp 1es 10
Frequency Densi ty _ ltnom2 ) Total occurrence
Taxa number (7) X SD
Nemertea 1 100 859 2715 Nematoda 22 900 18889 15036 Turbellaria 1 100 859 2715 Oligochaeta 19 700 16313 17385 biiQQgl~QhY~ YiCg~~ 2 200 171 7 3620 ~Q[~i~~l~ m2nil~n2i2 ~Q[QehiYm ~lmQni2
4 164
300 1000
3434 140810
6003 103048
Heleidae larvae 8 500 6869 8868
Mean number of organismssample 221 Standard deviation 111
I 2Mean num ber 0 f organIsms m 189751 Standard deviation 95391
H = L 37 SD= 043 SR= 090 J= 046
A-36
STATION 55 Date 1 August 1984 Depth 15 m Salinity (bottoll) 01 ppt Temperature (bottom) 204 C No of samples 10
Frequency Density (no 1m2) Total occurrence
Taxa number (i ) X SD
Nemertea 1 100 859 2715 Neutoda 122 1000 104749 7394B Turbellaria 4 300 3434 6003 ~~~~~nt~ secte~poundQa~ Oligochaeta
1 118
100 1000
859 101315
2715 61223
~giQgY~k~~l iot~[m~Qi btbQg~2b~ Y[O ~grQipound~ ~nl~ni b~ngpound~tb~[ Spa
3 1 5 1
200 100 500 100
2576 859
4293 859
5795 2715 4525 2715
~Q[QebiYm ~mQoi sect~QttQ~ ~OQOi Heleidae larvae
42 2 2
800 200 100
36061 171 7 171 7
21341 3620 5430
Chironomid larvae 4 400 3434 4434
Mean number of organismssapIe 306 Standard deviation 169
M b f I 2ean nurn er 0 organIsms m 262732 Standard deviation 145101
H = 198 SD= 067 SR= 1 45 J= 054
A-37
~-- --------------~~-------------
STATION 45 Date 17 August 1984 Depth 61 1
Salinity (bottom) 10 ppt Temperature (bottom) 210 C No of samp 1es 10
Frequency Density (nom2) Total occurrence
Taxa number (X) X SD
Nematoda 240 1000 206064 130213 ~~h~sect limQ tjQ~~Hi~ fQ[i~~ Oligochaeta
31 2
245
400 100
1000
26617 1717
210357
75228 5430
121374 babgglYQbl~ Yi[~sect 1 100 859 2715 Ostracoda 1 100 859 271 5 biQ~xtb~[ Spa ~~Q~~isect ~[pound~Qisect ~Qgebi HQOi
333 2
143
1000 200
1000
28591 4 171 7
1227BO
106553 3620
106860 sectpoundQUg~ poundg~nsectisect 1738 1000 1492247 68441 7
Mean number of organismssample 2736 Standard deviation 944
M b f I 2ean num er 0 organlslls m 2349130 Standard deviation 810600
H= 172 SD= 056 SR= 079 J= 052
A-38
STATION 18 Date 17 August 1984 Depth 27 III
Sal i ni ty (botto) 01 ppt Temperature (bottom) 214 C No of samples 10
Frequency Density (nom 2 ) occurrence
Taxa (X) X SD
Nematoda 186 1000 159700 62468 ~tgt SPa 2 100 171 7 5430 Turbellaria 8 400 6869 8868 ~~ntbg2 imnipoundQ 12 700 10303 11304 Oligochaeta 283 1000 242984 90509 ~~iQQY~~Y~lls inlgtmggisBivalvia
4 1
400 100
3434 859
4434 271 5
~Qt~i~Y nilnsectisectbimnQpoundttbg[s SPa ~QtQQbi~ islmQDi2
1 17
286
100 900
1000
859 14596
245560
271 5 10747 83461
sectpoundetteln poundDsggnsectisect Chironomid larvae
526 4
1000 3Q0
451624 3434
179610 6003
Mean number of organismssapIe 1330 Standard deviation 162
Mean nurn ber I 20 f organIsms m 1141938 Standard deviation 139389
H= 214 SD= 073 SR= 1 06 J= 060
A-39
STATION 58 Date 17 August 1984 Depth 55 II
Salinity (bottom) 01 ppt Temperature (bottom) 220 C ND of samples 10
Frequency Density (nom2 ) Total occurrence
Taxa number (7) x S D
Nematoda 68 1000 58385 27689 Turbellar i a 4 200 3434 8295 Oligochaeta 19 800 16313 13084 ~~i~Q~k~~l~ in~~[m~i bitUQ9Y2bYa Yi[~na Bivalvia
3 3 4
300 300 300
2576 2576 3434
4147 4147 6003
gQ[QipoundYl~ mnilDa 1 100 859 2715 binQpoundY~[ sp gQ[Q2UY a~mgnia sect~Qtgl~n ~n~~ni
2 338
6
100 1000 400
171 7 290207
5152
5430 56636 7240
Mean number of organismssample 448 Standard deviation 72
W b f 2lean num er 0 organlsms II 384653 Standard deviation 61988
H = 1 27 SD= 041 SR= 1 02 J= 038
A-40
STATION 55 Date 17 August 1984 Depth 18 m Salinity (bottom) 00 ppt Temperature (bottol) 223 C No of samples 10
Frequency Density (nom 2 ) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 291 1000 249853 118104 Turbellaria 1 100 859 2715 M~ntb~ mni~Q Oligochaeta
1 47
100 1000
859 40354
2715 28347
~~iQQ~sectkY~ll int~[m~gi bitbQQ1YSDY Yi(gn Bivalvia
25 12
6
900 500 400
21465 10303 5152
1231 0 18459 7240
~Q~2ipoundY mnil~ni Ostracoda
11 8
400 600
9445 6869
12442 6773
bmnQpoundYb~r~ SPa 52 1000 44647 19746 ~QrQsbY lmgnisectsQiielo snQ~ni~ Chironomid larvae
43 5
15
1000 400 BOO
36920 4293
12879
21436 6071 8344
Mean number of organismssample 517 Standard deviation 174
M b f I 2ean num er 0 organlsms m 443896 Standard deviation 149431
W = 228 SD= 065 SR= 1 33 J= 062
A-41
STATION 45 Date 29 August 1984 Depth 55 III
Salinity (bottom) 07 ppt Temperature (bottom) 199 C No of samples 10
Frequency Density (noI 2) Total occurrence
Taxa number (X) X SD
Nematoda 192 1000 164851 98380 ~sntbsect limnipoundQlDligochaeta
2 198
200 1000
171 7 170003
3620 67339
~Q[eipoundYls msniln~isect Ostracoda
1 4
100 400
859 3434
2715 4434
bimnQpoundytb[s Spa gQ[Qeniy sect21QOi~ sectpoundQttQlsO poundsOsggOi
164 87
2468
1000 1000 1000
140810 74698
2119025
39283 39460
840890
Mean number of organismssample 311 6 Standard deviation 101 1
ill b f 2nean nUll er 0 organIsms 2675398 Standard deviation 8682B8
W= 116 SD= 036 SR= 060 J= 039
A-42
STATION 18 Date 29 August 1984 Depth 30 bull Salinity (bottom) 00 ppt Temperature (bottom) 202 C No of samples 10
Total Frequency occurrence
Densi ty 2
(nom )
Taxa number (~ ) x S D
Nematoda 150 1000 128790 28905 Turbellaria 7 400 6010 9096 ~nh imni~Qj Oligochaeta ~~i~2Y~k~~1 ini~CIDgii bih2g~Qb~ Yi(~U2 Bivalvi a
B 145
1 1 2
600 1000
100 100 200
6869 124497
859 859
171 7
677 3 84732
271S 2715 3620
~Q[Qi~yli miDllgni bimn2pound~ih~C sp ~QtQehiY imQUia Harpacticoida
7 7
265 1
500 300
1000 100
6010 601 0
227529 859
8145 10747
139462 2715
sect~QtiQDi ~Q~Q~i~ Chironomid larvae
2471 2
1000 200
2121601 171 7
1063112 3620
Mean number of organismssample 3067 Standard deviation 121 9
2Mean number 0 f organIsms m 2633326 standard deviation 1046718
H = 1 09 SD= 034 SR= 1 04 J= 029
A-43
STATION 58 Date 29 August 1984 Depth 55 111
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (noI 2 ) Total occurrence -----------------
Taxa nUllber (X) X SD
Nemertea 4 400 3434 4434 Nuatoda 64 1000 54950 25016 Turbellaria 9 400 7727 11047 ~Hl~b limli~Q19 Oligochaeta
1 37
100 1000
859 31769
2715 19006
i~Qyh il(~~ bHtlQSlheln Yl Bivalvia
4 4
20
200 300 400
3434 3434
17172
8215 6003
26541 ~e(ijY l bQ~dlH sp
26 1
700 100
22324 859
25662 2715
~Q[QQhil iQ sectjgUell HD Heleidae larvae
418 20
1
1000 800 100
358895 17172
859
129443 12799 271 5
Mean number of organismssample 609 Standard deviation 175
nean num b er 0 f organIsms 1 111 2 522887 Standard deviation 150164
H= 176 SD= 051 SR= 1 30 J= 047
A-44
I I
I
I
STATION SS
Date 29 August 1984 Depth 21 1
Salinity (bottom) 00 ppt Temperature (bottom) 208 C No of samples 10
Frequency Density (no2) Total occurrence
Taxa nUllber (X) x S D
Nematoda ISO 1000 128790 37969 Turbellaria 1 100 859 271 5 Oligochaeta 48 1000 41213 16088 ~i~g~sect~~l iQ~~mgi bi~QQg~gb~sect ~i~nsect
10 14
600 600
eSB6 12020
9050 14137
Bivalvia 4 200 3434 7240 ~Q[Q~Yl niQaa Ostracoda
15 7
700 SOO
12879 6010
15806 7069
bmQg~~~b~ SPa 14 800 12020 8295 ~g[gaby mgni sect~g~~Qn ~ngnai Chironomid larvae
IB4 25 9
1000 900 700
157982 21465
7727
35563 16810 6335shy
Mean number of organismssample 481 Standard deviation B6
2Mean number 0 f organlsms m 412987 Standard deviation 74131
H= 24S SD= 074 SR= 1 23 J= 068
A-45
STATION 45 Date 14 September 1984 Depth 61 11
Salinity (bottom) 03 ppt Temperature (bottom) IB4 C No of samples 10
---------------------------------~----------------------------------------
Taxa TotalnUlllDer
Frequency occ~~~ence
Density (no 2) -----X-------sect7B
Nematoda 189 1000 162275 85233 t1tQ SPa
Turbellaria 2 2
200 100
171 7 171 7
3620 5430
~~~nIng limoifQl t1QQQDi~ flQriQ Oligochaeta
5 19
142
400 800
1000
4293 1631 3
121921
6071 12442 30504
~QQifYl mDl~D bimoQpoundt1hgr Spa Cumacea
19 184
2
800 1000 200
1631 3 157982
171 7
130B4 69541 3620
~Q[QnniYm ~~lmQDi Harpacticoida
118 1
1000 100
10131 5 B59
43367 2715
sectfQIIQD fOQgO Chironomid larvae
1780 1
1000 100
1528308 859
673586 2715
Mean number of organismssample 2464 Standard deviation 874
M ean num b er f 20 organlsms 2115590 Standard deviation 750305
H= 151 SD= 046 SR= 1 07 J= 041
A-46
STATION 18 Date 14 September 1984 Depth 21 III
Salinity (bottom) 01 ppt Temperature (botto) 182 C No of samples 10
Frequency DenSity (nom 2 ) Total occurrence ---------------- shy
Taxa nUlDber (i) X SD
Nemertea 1 100 859 271 5 Nematoda 186 1000 159700 44925 Turbellaria 16 400 13738 20717 ~~Dth~~ limni~Ql Oligochaeta
13 55
700 900
11162 47223
9096 30085
~Q~ei~Yl nil~Qi~ 17 900 14596 7069 bimDg~lbg[ Spa b 500 5152 6003 ~Q[Q2niY ~lgQi~ Harpacti coi da
562 2
1000 200
482533 171 7
136766 3620
sectpoundQttQ~Q~ ~n~ni 791 1000 679153 324290
Mean number of organismssample 1649 Standard deviation 447
I 211ean nUll ber 0 f organIsms I 1415831 Standard deviation 384136
H= 179 SD= 064 SR= 084 J= 054
A-47
STATION 58 Date 14 September 1984 Depth 58 III
Salinity (bottom) 01 ppt Temperature (bottom) 191 C No of sampl es 10
-------------------------------------------~------------------------------Frequency Density (nom 2 )
Total occurrence Taxa number eX) X SD
Nemertea 1 100 859 2715 Nematoda 55 1000 47223 18658 Turbellaria 10 500 8586 11448
1 100 859 2715 Oligochaeta 41 1000 35203 17850 ~~iQQ~~gll iu1g[m~i ~Q[Q~Yl nilD bimnQ~Y~h[ Spa ~Q[Q~hiYm lmgui sectpoundQilg1D poundU2D Chironomid larvae
4 10
2 277
23 4
100 500 200
1000 700 300
3434 8586 171 7
237832 19748 3434
10861 11448 3620
50561 21051 6003
Mean number of organismssample 428 Standard deviation 51
M b f 2ean num er 0 organIsms III 367481 Standard deviation 43743
H= 179 SD= 055 SR= 114 J= 052
A-48
I I
STATION SS Date 14 September 1984 Depth 21 II
Salinity (bottom) 01 ppt Temperature (bottom) 190 C No of samples 10
--------------------------------------------------------------------~-----
Frequency Density (no1I2) Total occurrence ---------------- shy
Taxa number (X) X SD
Nematoda 102 1000 87577 39200 Oligochaeta 34 700 29192 31142 ~iQ2Y~y1 int(mgi~ bithQgl~en~ Yi(gDsect ~Q(~i~Y m~DilgDsecti~ bimDQamp~1h(sect sp ~2(QQhiY slmQD 2poundQiiQlsD ~sD~g~nsecti Chironomid larvae
36 18 16 17
100 16
3
1000 600 800 700
1000 800 300
30910 15455 13738 14596 85860 13738 2576
157BO 20953 10078 14621 32126 10861 4147
Mean number of organismssample 342 Standard deviation 97
2Mean nUllber 0 f organlsms m 293641 Standard deviation 83617
H= 262 SD= 079 SR= 095 J= 083
A-49
Appendix B--Sediment particle size and organic content of the Cathlamet Bay
benthic invertebrate sites 13 March through 14 September
1984
iii
1
Station 18a 48 54 57
Survey 1 1 1 1
Month March March March March
Day 13 13 13 13
Particle size (mm) Phib Percent by weight
gt 40 -2 000 000 000
20- 40 -1 000 000 000
10- 20 0 000 009 000
05- 10 1 018 1079 032
025- 050 2 545 7583 2468
0125- 025 3 8731 1225 6783
00625-0125 4 491 037 657
lt0625 (5-12) 216 067 060
Organic Content 160 116 128
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
b Phi= -log2(sediment particle diameter in mm)
B-1
Station 18a 48 54 57
Survey 2 2 2 2
Month April April April April
Day 5 5 5 5
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 003 093 000
05shy 10 1 005 31 75 023
025shy 050 2 087 5904 2368
0125- 025 3 6316 750 7155
00625-0125 4 3056 026 427
lt0625 (5-12) 533 052 028
Organic Content 081 077 065
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-2
Station 45 55 58
Survey 3 3 3 3
Month April April April April
Day 18 18 18 18
Particle size (mm)
gt 40
Phi
-2
Percent by weight
000 000 000
20shy 40 -1 000 000 000
10shy 20 0 005 009 004
05shy 10 1 010 027 013
025shy 050 2 015 095 225
0125- 025 3 097 536 6111
00625-0125 4 453 2821 2205
lt0625 (5-12) 9420 6511 1442
Organic Content 31 42 14
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-3
Station 18a 45 55 58
Survey 4 4 4 4
Month May May May May
Day 4 4 4 4
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 021
05shy 10 1 000 065 063
025shy 050 2 012 370 230
0125- 025 3 091 4099 4696
00625-0125 4 322 3650 3052
lt0625 (5-12) 9575 1810 1939
Organic Content 330 180 160
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-4
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
5
May
17
000
000
005
016
217
5862
2729
1170
100
45 55 58
5 5 5
May May May
17 17 17
Percent by weight
000 000
000 000
005 008
113 031
325 274
1903 5613
2784 2401
4870 1672
240 110
000
000
000
010
020
079
397
9494
390
B-5
Station 18al 45 55 58
Survey 6 6 6 6
Month June June June June
Day 6 6 6 6
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 000 008 020
05shy 10 1 005 051 027
025shy 050 2 005 301 1 79
0125- 025 3 074 3189 5404
00625-0125 4 599 4118 2885
lt0625 (5-12) 9317 2332 1485
Organic Content 340 240 150
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-6
Station
Survey
Month
Day
Particle size Cmm) Phi
gt 40 -2
20shy 40 -1
10shy 20 a
05shy 10 1
025shy 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
7
June
18
000
000
005
029
138
3917
4143
1768
180
45
7
June
18
55 58
7 7
June June
18 18
Percent by weight
000
000
000
010
020
080
427
9464
310
000 000
000 000
000 007
011 022
057 190
957 5286
3023 2642
5957 1853
1 70 110
B-7
Station 18al 45 55 58
Survey 8 8 8 8
Month July July July July
Day 2 2 2 2
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000
20shy 40 -1 000 000 000
10shy 20 0 006 002 006
05shy 10 1 006 0l3 023
025shy 050 2 017 088 171
0125- 025 3 074 2712 5365
00625-0125 4 552 3892 3081
lt0625 (5-12) 9345 3294 l354
Organic Content 410 210 160
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-8
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
9
July
17
000
000
003
013
130
4294
4434
1127
130
45
9
July
17
Percent
000
000
000
006
012
051
046
9885
290
55
9
July
17
by weight
000
000
019
048
091
628
3616
5597
030
58
9
July
17
000
000
004
022
158
5017
3148
1650
140
B-9
Station
Survey
Month
Day
Particle size (mm) Phi
gt 40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18al
10
August
1
45
10
August
1
55
10
August
1
58
10
August
1
Percent by weight
000 000
000 004
001 004
009 018
018 088
098 306
049 2510
9824 7070
000
005
045
763
3604
4495
932
156
100 190 060
al Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
B-10
Station 18 45 55 58
Survey 11 11 11 11
Month August August August August
Day 17 17 17 17
Particle size (mm) Phi Percent by weight
gt 40 -2 000 000 000 000
20- 40 -1 005 000 000 000
10- 20 0 021 003 000 210
05- 10 1 064 009 000 159
025- 050 2 226 027 045 2656
0125- 025 3 3259 131 712 3719
00625-0125 4 4327 195 1737 1159
lt0625 (5-12) 2098 9635 7506 2097
Organic Content 210 300 160 100
Ii I
B-11
Station
Survey
Month
Day
Particle size (mm) Phi
gt40 -2
20- 40 -1
10- 20 0
05- 10 1
025- 050 2
0125- 025 3
00625-0125 4
lt0625 (5-12)
Organic Content
18
12
August
29
000
000
012
046
186
3465
4498
17 93
241
45
12
August
29
55 58
12 12
August August
29 29
Percent by weight
000
000
002
009
026
118
189
9656
540
000 000
000 000
003 011
011 028
055 1013
859 5033
1596 1827
7476 2089
1 70 120
B-12
a Sample being saved for hydrocarbon and petroleum testing in relation to the MOBILOIL oil spill 19 March 1984
_-------------------- shy
B-13