CRUISE REPORT C-233

0

CRUISE REPORT

C-233

Scientific Data Collected Aboard

SSV Corwith Cramer

Key West, Florida, USA –

Portsmouth, Dominica – Christiansted, St. Croix, USVI

16 February - 25 March 2011

Sea Education Association

Woods Hole, Massachusetts

1

This document should be cited as:

Schrum, H.N. 2011. Final report for S.E.A. cruise C233. Sea Education Association, Woods Hole, MA

02540. www.sea.edu.

To obtain unpublished data, contact the Chief Scientist or SEA data archivist:

Data Archivist

Sea Education Association

PO Box 6

Woods Hole, MA 02543

Phone: 508-540-3954

Fax: 508-457-4673

E-mail: [email protected]

Web: www.sea.edu

2

Table of Contents

Ship’s Company .............................................................................................................................. 3

Introduction ..................................................................................................................................... 4

Table 1. Student Research Projects, C-233 ..................................................................................... 5

Table 2. Academic Program ........................................................................................................... 6

Data Description ............................................................................................................................. 7

Figure 1. C233 Cruise Track ........................................................................................................... 7

Table 3. Oceanographic Sampling Stations .................................................................................... 8

Table 4. Surface Sampling Station Data ....................................................................................... 12

Figure 2. Surface current direction and velocity ........................................................................... 14

Figure 3. Surface Temperature, Salinity, and Fluorescence ......................................................... 14

Figure 4. Cross Section of Temperature and Salinity ................................................................... 15

Table 5. Hydrocast Bottle Data ..................................................................................................... 16

Table 6. Free CTD Sample Locations........................................................................................... 24

Table 7. Neuston Net Tow Data ................................................................................................... 24

Table 8. Meter Net Tow Data ....................................................................................................... 27

3

Ship’s Company for SSV Corwith Cramer Cruise C-233

Nautical Staff

Jason Quilter Captain

Ben Hale First Mate

Dylan Clark Second Mate

Jeremy Dann Third Mate

Dave Reynolds Engineer

Ben Spivak Assistant Engineer

Sayzie Koldys Steward

Scientific Staff

Heather Schrum Chief Scientist

Katy Hunter First Assistant Scientist

Randy Jones Second Assistant Scientist

Julia Twichell Third Assistant Scientist

Students

Zachary Balmuth-Loris Syracuse University

Morgan Barrios Florida State University

Elizabeth Dorr Williams College

Mattie Fails Salve Regina University

Kayli Fraser University of San Francisco

Marcella Houghton Middlebury College

Amber Howell Armstrong Atlantic State University

Catherine Jenks University of Puget Sound

Rachel Keyser Bard College at Simon's Rock

Mary Krauszer University of Puget Sound

Christopher Lutz Colorado College

Amelia McCallister Warren Wilson College

Samuel McKay Carleton College

Devan McVay Warren Wilson College

Sujata Murty Oberlin College

Brianna Valenti University of Rhode Island

Daniel White University of Denver

Madelyn Woods Boston University

4

Introduction

This cruise report provides a summary of scientific activities aboard the SSV Corwith Cramer

during cruise C-233 (16 February – 25 March 2011). The 2650 nm cruise served as the second

half of the 12-week Sea Semester: Ocean Exploration program with Sea Education Association

(SEA), during which extensive oceanographic sampling was conducted for both student research

projects (Table 1) and the ongoing SEA research program. Students examined physical,

chemical, biological, and environmental oceanographic characteristics in accordance with their

written proposals and presented their results in a final poster session and papers (available upon

request from SEA).

The brief summary of data contained in this report is not intended to represent final data

interpretation and should not be excerpted or cited without written permission from SEA.

Heather N. Schrum

Chief Scientist, C-233

5

Table 1. Student Research Projects, C-233

Title Author(s)

Dissolved nutrient concentrations and assays of Redfield

stiochiometry in the North Atlantic

Raye Keyser

The Distribution and Diversity of Dinoflagellates along the

C233 Cruise Track

Zak Balmuth-Loris

Distribution and abundance of neustonic zooplankton in the

Sargasso Sea

Kayli Fraser and Mary Krauszer

Comparison of foraminifera distribution with temperature, pH,

and salinity in the North Atlantic

Sujata Murty and Marcella

Houghton

Prey Selectivity of North Atlantic Myctophids Cat Jenks and Amber Howell

Subtropical Mode Water and Chlorophyll-a Concentrations

along the C-233 Cruise Track

Elizabeth Dorr, Chris Lutz, and

Sam McKay

Distribution and Size Classification of Leptocephali along the

C-233 Cruise Track

Amelia McCallister and Devan

McVay

Trends of Micro- and Macroplastic Distribution and Density

Along the C-233 Cruise Track

Mattie Fails, Brianna Valenti,

Dan White

The Environmental Impact of the SSV Corwith Cramer Along

the C-233 Cruise Track

Morgan Barrios

Distribution of Euthecosomata Pteropods In Three Regions of

the North Atlantic

Madelyn Woods

6

Table 2. Academic Program

Date Topic Speaker(s)

18 Feb Introduction to OC/NS at sea Schrum/Quilter

21 Feb Jibing Quilter & Mates

22 Feb CTD/Chl-a/oxygen data profiles Schrum

23 Feb Line Chase Students

24 Feb Methods and Data Discussion Students/Assistant

Scientists

25 Feb Rules of the Road (Ship’s Lights) Spivak

28 Feb Spectrophotometry/pH profiles;

Spectrophotometer/1 m Net/Dip Net Demonstrations

Schrum; Assistant

Scientists

1 Mar Celestial Navigation Spivak & Clark

2 Mar Winkler Titration: Chemistry and Demonstration Assistant Scientists

3Mar Lab Jeopardy;The Titanic: What Went Wrong? Students; Reynolds

4 Mar Lab Practical Students

7 Mar RADAR Clark & Dann

8 Mar Alternative Energy Reynolds

10 Mar Figures and Data Discussion Students/Assistant

Scientists

11 Mar Set, Strike, Furl Quilter & Mates

14 Mar Project Paper Discussion Students/Assistant

Scientists

15 Mar Anchoring Hale

21 Mar Project Presentations Students

22 Mar Tropical Weather; Science/Deck Challenge Hale; Students

7

Data Description

This section provides a record of data collected aboard the SSV Corwith Cramer cruise C-233 (US

State Department Cruise: 2010-102) from Key West, Florida, USA to Christiansted, St. Croix, USVI

via the Sargasso Sea (Figure 1). A port stop was made at Portsmouth, Dominica.

Figure 1. Hourly positions along the C-233 cruise track.

During the six-week voyage, we sampled at 108 discrete oceanographic stations (Table 3). In

total 43 surface samples were taken coincident with hydrocast and neuston tow stations (Table

4). Additionally, we continuously sampled water depth and sub-bottom profiles (CHIRP system),

upper ocean currents (ADCP, Figure 2), and sea surface temperature, salinity, and in vivo

fluorescence, CDOM, and transmittance (seawater flow-through system, Figure 3 – temperature,

salinity and fluorescence).

Vertical temperature and salinity profiles were taken with the CTD (Figure 4). Additional

instrumentation on the CTDs allowed for profiling of dissolved oxygen, fluorescence,

transmittance, PAR and CDOM (Figure 5). Summaries of sea surface and water column

chemical and biological properties are found in Tables 4-7. Lengthy CTD, CHIRP, ADCP, and

flow-through data are not fully presented here. All unpublished data can be made available by

arrangement with the SEA data archivist (contact information, p. 2).

8

Table 3. Oceanographic Sampling Stations.Oceanographic sampling stations. X indicates type of station. NT = Neuston Tow, MN =

Meter Net with minilogger, 2MN = 2-Meter Net with minilogger, PN = Phytoplankton Net, DN=Dip Net, HC = Hydrocast with CTD,

CTD = Free CTD, SD = Secchi Disk, NB = single Niskin Bottle, B = Bucket.

Station Date Time Latitude (N) Longitude (W) NT MN 2MN PN DN HC CTD SD NB B General Locale

C233-001 18-Feb-11 0008 24°17.6' 81°32.7' X Florida Keys


C233-003 19-Feb-11 0945 24°14.3' 81°7.9' XX X Florida Keys


C233-005 19-Feb-11 2353 24°26.5' 80°36.3' X Gulf Stream



C233-008 20-Feb-11 0943 24°32.9' 80°17.6' X X Gulf Stream







C233-015 21-Feb-11 2341 27°52.3' 79°6.8' X X South Sargasso Sea

C233-016 22-Feb-11 0147 27°54.5' 79°7.0' X South Sargasso Sea










9











C233-034 25-Feb-11 1155 29°23.2' 76°35.2' Xb South Sargasso Sea











C233-045 1-Mar-11 0003 29°29.4' 70°31.9' X South Sargasso Sea



C233-048 1-Mar-11 0946 29°28.5' 69°53.1' X X South Sargasso Sea











10




C233-066 8-Mar-11 1118 25°48.7' 67°3.2' X X X South Sargasso Sea










C233-076 10-Mar-11 1014 23°35.1' 64°28.8' X X X South Sargasso Sea










C233-086 12-Mar-11 1055 20°49.3' 62°9.7' X X X Tropical Atlantic

C233-087 12-Mar-11 1205 20°48.9' 62°9.9' X Tropical Atlantic




C233-091 13-Mar-11 1000 18°54.1' 61°23.6' X X X Tropical Atlantic




C233-095 14-Mar-11 0935 16°55.7' 61°32.4' X X Tropical Atlantic


11














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Table 4. Surface Sampling Station Data. HC = Hydrocast with CTD. pH = in situ pH calculated. Station Date Time Latitude (N) Longitude (W) Temperature (°C) Salinity (psu) Chl a (µg/L) PO4

3- (µM) NO3

- (µM) pH

C233-SS-001 19-Feb-11 0011 24°17.5' 81°32.7' 20.6 36.229 0.233 8.03

C233-003-HCb #13 19-Feb-11 1135 24°16.8' 81°4.1' 24.6 34.2 0.083 0.1 0.118 8.11

C233-SS-002 20-Feb-11 0206 24°25.6' 80°30.3' 24.5 36.31 0.069 8.05

C233-008-HC #13 20-Feb-11 1033 24°33.5' 80°16.6' 24.6 36.32 0.163 0.13 8.05

C233-SS-003 21-Feb-11 0016 25°32.0' 79°56.7' 24.1 36.238 0.078 8.05

C233-013-HC #13 21-Feb-11 1041 26°34.8' 79°39.7' 24.2 36.28 0.121 8.05

C233-SS-004 21-Feb-11 1145 26°38.1' 79°40.4' 24.3 36.285 0.12 8.07

C233-SS-005 21-Feb-11 2341 27°50.9' 79°6.6' 24.3 36.251 0.126 8.08

C233-018-HC #13 22-Feb-11 1020 28°22.0' 78°47.5' 23.9 36.703 0.081

C233-020-HC #13 23-Feb-11 0010 28°31.4' 78°21.1' 21.9 36.712 0.038 8.05

C233-023-HC #13 23-Feb-11 1016 28°31.9' 77°54.6' 22.1 36.603 0.079 0.11 0.09 8.1

C233-025-HC #13 24-Feb-11 0026 28°25.4' 77°21.9' 22.6 36.67 0.083 8.11

C233-SS-006 24-Feb-11 0035 29°3.6' 76°38.3' 22.7 36.623 0.087 8.03

C233-028-HC #13 24-Feb-11 1027 28°35.0' 77°16.3' 22.3 36.776 0.091 8.06

C233-034-HC #13 25-Feb-11 1030 29°19.0' 76°34.1' 21.8 36.809 0.09 8.08

C233-SS-007 26-Feb-11 0144 29°27.5' 75°17.4' 22.4 36.726 0.072 8.08

C233-037-HC #13 26-Feb-11 1017 29°22.4' 74°35.9' 21.2 36.834 0.145 0.01 0.489 8.04

C233-039-HC #13 27-Feb-11 1038 29°30.9' 73°19.9' 21.2 36.842 0.067 8.02

C233-SS-008 28-Feb-11 0030 29°36.4' 72°40.6' 21.1 36.841 0.097 7.63

C233-043-HC #13 28-Feb-11 1002 29°35.2' 71°42.9' 20.5 36.822 0.08 0.01 0.115 8.11

C233-SS-009 1-Mar-11 0217 29°31.3' 70°39.9' 20.7 36.823 0.118 8.07

C233-048-HC #13 1-Mar-11 1012 29°28.9' 69°53.2' 21.4 35.87 0.118 8.09

C233-050-HC #13 2-Mar-11 0038 29°26.0' 68°54.4' 21.8 36.899 0.056 8.09

C233-SS-010 2-Mar-11 1205 29°13.1' 68°33.1' 21 36.873 0.063 8.09

C233-SS-011 3-Mar-11 0024 28°52.2' 68°32.3' 21.5 36.895

C233-SS-012 6-Mar-11 0936 27°15.4' 69°18.6' 21.8 36.899 0.06 8.09

C233-SS-013 7-Mar-11 0042 26°27.5' 69°15.5' 23.3 36.66 0.025 8.05

C233-061-HC #13 7-Mar-11 1043 26°17.5' 68°58.6' 24.3 36.47 0.034 8.09

C233-SS-014 8-Mar-11 0028 26°10.6' 67°57.6' 23.2 36.523 0.033 8.08

C233-066-HC #13 8-Mar-11 1233 25°48.1' 67°4.0' 23.7 36.766 0.028 8.08

C233-068-HC #13 9-Mar-11 0000 25°14.5' 66°27.1' 23.9 36.688 0.035 8.1

C233-071-HC #13 9-Mar-11 1053 24°55.9' 66°8.8' 23.9 36.712 0.028905315 8.08

C233-SS-015 10-Mar-11 0136 24°6.1' 65°9.6' 24.3 36.466 0.032675573 8

13

Station Date Time Latitude (N) Longitude (W) Temperature (°C) Salinity (psu) Chl a (µg/L) PO43-

(µM) NO3- (µM) pH

C233-076-HC #13 10-Mar-11 1105 23°35.4' 64°29.2' 25 36.12 0.039098977 0.14 0.028 8.1

C233-SS-016 11-Mar-11 0031 22°52.1' 63°36.1' 25 36.376 0.038680059 8.1

C233-SS-017 11-Mar-11 1139 22°11.6' 63°3.3' 24.9 36.569 0.044544906 8.09

C233-SS-018 12-Mar-11 0053 21°29.4' 62°36.7' 2.2 36.381 0.043008874 8.08

C233-086-HC #13 12-Mar-11 1055 20°49.3' 62°9.7' 25.3 36.391 0.043008874 0.012 8.27

C233-SS-019 13-Mar-11 0020 19°46.4' 61°42.5' 25.8 36.545 0.039238616 8.14

C233-091-HC #13 13-Mar-11 1035 18°53.9' 61°23.8' 26.2 36.54 0.088531255 0.02 0.046 8.13

C233-SS-020 13-Mar-11 2342 17°44.9' 61°15.8' 26 36.102 0.068702488 8.09

C233-SS-021 14-Mar-11 1100 16°54.5' 61°34.5' 26.5 36.479 0.082666408 8.08

C233-SS-022 15-Mar-11 0945 15°33.0' 61°31.0' 26.7 36.223 0.082666408 8.05

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Figure 2. Surface current direction and velocity [magnitude in mm/s] measured with the ADCP.

Figure 3. Surface measurements the continuous flow-through data logger. A. Temperature (C).

B. Salinity (psu). C. Fluorescence. Break in sampling through British Virgin Islands.

A B C

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Figure 4. Cross sections from CTD data collected along the C-233 cruise track. Map (A)

indicates which stations were included in the sections.B. Temperature (C). C. Salinity (psu).D.

Oxygen (µmol/kg). E. Raw fluorescence. Note scale difference for fluorescence.

A B

C

D

E

16

Table 5. Hydrocast bottle data. O2 was measured by Winkler titration.

Station Bot-

tle Date Time Latitude

(N)

Longitude

(W)

Actual Depth

(m)

O2

(mL/L)

Chl a

(µg/L)

PO43-

(µM)

NO3-

(µM)

in situ

pH

C233-003-HCb 1 19-Feb 1135 24°16.8' 81°4.1' 310.7 0.004 1.67 7.71

C233-003-HCb 2 19-Feb 1135 24°16.8' 81°4.1' 310.2 0.003 1.53 7.71

C233-003-HCb 3 19-Feb 1135 24°16.8' 81°4.1' 300.4 0.006 1.83 7.71

C233-003-HCb 4 19-Feb 1135 24°16.8' 81°4.1' 250.6 0.004 1.39 7.70

C233-003-HCb 6 19-Feb 1135 24°16.8' 81°4.1' 150.5 0.012 0.96 7.85

C233-003-HCb 8 19-Feb 1135 24°16.8' 81°4.1' 75.2 0.237 0.15 1.76 8.07

C233-003-HCb 9 19-Feb 1135 24°16.8' 81°4.1' 70.2 0.228 0.25 3.34 8.08

C233-003-HCb 10 19-Feb 1135 24°16.8' 81°4.1' 55.6 0.341 0.26 2.31 7.94

C233-003-HCb 12 19-Feb 1135 24°16.8' 81°4.1' 30.1 0.125 0.06 8.12

C233-003-HCb 13 19-Feb 1135 24°16.8' 81°4.1' 3.0 0.083 0.10 0.12 8.11

C233-008-HC 1 20-Feb 1033 24°33.5' 80°16.6' 500.0 0.004 1.66

C233-008-HC 2 20-Feb 1033 24°33.5' 80°16.6' 399.8 0.004 1.39

C233-008-HC 3 20-Feb 1033 24°33.5' 80°16.6' 299.8 0.005 0.75

C233-008-HC 4 20-Feb 1033 24°33.5' 80°16.6' 250.3 0.003 0.17

C233-008-HC 5 20-Feb 1033 24°33.5' 80°16.6' 200.2 0.021 0.20

C233-008-HC 6 20-Feb 1033 24°33.5' 80°16.6' 149.8 0.039 0.25

C233-008-HC 7 20-Feb 1033 24°33.5' 80°16.6' 119.9 0.068 0.04

C233-008-HC 8 20-Feb 1033 24°33.5' 80°16.6' 100.0 0.171 0.25

C233-008-HC 9 20-Feb 1033 24°33.5' 80°16.6' 80.0 0.183

C233-008-HC 10 20-Feb 1033 24°33.5' 80°16.6' 66.2 0.136 0.01

C233-008-HC 12 20-Feb 1033 24°33.5' 80°16.6' 24.0 0.145 0.00 8.05

C233-008-HC 13 20-Feb 1033 24°33.5' 80°16.6' 3.0 0.163 0.13 8.05

C233-013-HC 1 21-Feb 1041 26°34.8' 79°39.7' 486.9 0.003 26.26 7.85

C233-013-HC 2 21-Feb 1041 26°34.8' 79°39.7' 374.8 0.004 24.65 7.89

C233-013-HC 3 21-Feb 1041 26°34.8' 79°39.7' 250.5 0.004 7.92

C233-013-HC 4 21-Feb 1041 26°34.8' 79°39.7' 150.6 0.013 5.69 8.02

C233-013-HC 5 21-Feb 1041 26°34.8' 79°39.7' 100.4 0.129 1.43 8.09

C233-013-HC 6 21-Feb 1041 26°34.8' 79°39.7' 90.0 0.198 0.33 8.07

C233-013-HC 7 21-Feb 1041 26°34.8' 79°39.7' 80.5 0.192 0.44 8.07

17

Station Bot-


(N)

Longitude

(W)

Actual Depth

(m)

O2

(mL/L)

Chl a

(µg/L)

PO43-

(µM)

NO3-

(µM)

in situ

pH

C233-013-HC 8 21-Feb 1041 26°34.8' 79°39.7' 70.4 0.277 8.06

C233-013-HC 9 21-Feb 1041 26°34.8' 79°39.7' 60.2 0.446 0.59 8.05

C233-013-HC 10 21-Feb 1041 26°34.8' 79°39.7' 50.5 0.392 0.19 8.06

C233-013-HC 11 21-Feb 1041 26°34.8' 79°39.7' 40.0 0.153 8.07

C233-013-HC 12 21-Feb 1041 26°34.8' 79°39.7' 30.2 0.180 8.08

C233-013-HC 13 21-Feb 1041 26°34.8' 79°39.7' 3.0 0.121 8.05

C233-015-

Niskin

1 21-Feb 2341 27°50.9' 79°6.6' 3.0

C233-018-HC 1 22-Feb 1020 28°22.0' 78°47.5' 500.6 0.003

C233-018-HC 2 22-Feb 1020 28°22.0' 78°47.5' 399.9 0.002

C233-018-HC 3 22-Feb 1020 28°22.0' 78°47.5' 299.9 0.003

C233-018-HC 4 22-Feb 1020 28°22.0' 78°47.5' 200.8 0.012

C233-018-HC 5 22-Feb 1020 28°22.0' 78°47.5' 125.0 0.059

C233-018-HC 7 22-Feb 1020 28°22.0' 78°47.5' 79.7 0.244

C233-018-HC 9 22-Feb 1020 28°22.0' 78°47.5' 49.8 0.175

C233-018-HC 10 22-Feb 1020 28°22.0' 78°47.5' 39.8 0.107

C233-018-HC 11 22-Feb 1020 28°22.0' 78°47.5' 30.0 0.116

C233-018-HC 13 22-Feb 1020 28°22.0' 78°47.5' 3.0 0.081

C233-020-

Niskin

1 22-Feb 2347 28°31.4' 78°21.4' 3.0

C233-020-HC 2 23-Feb 0010 28°31.4' 78°21.1' 400.5 0.003

C233-020-HC 3 23-Feb 0010 28°31.4' 78°21.1' 299.8 0.002

C233-020-HC 4 23-Feb 0010 28°31.4' 78°21.1' 200.2 0.004

C233-020-HC 5 23-Feb 0010 28°31.4' 78°21.1' 124.5 0.069

C233-020-HC 6 23-Feb 0010 28°31.4' 78°21.1' 100.3 0.137

C233-020-HC 8 23-Feb 0010 28°31.4' 78°21.1' 60.4 0.253

C233-020-HC 9 23-Feb 0010 28°31.4' 78°21.1' 50.0 0.183

C233-020-HC 10 23-Feb 0010 28°31.4' 78°21.1' 40.2 0.105

C233-020-HC 11 23-Feb 0010 28°31.4' 78°21.1' 30.3 0.128

C233-020-HC 12 23-Feb 0010 28°31.4' 78°21.1' 20.6 0.112

C233-020-HC 13 23-Feb 0010 28°31.4' 78°21.1' 3.0 0.038 8.05

C233-023-HC 2 23-Feb 1016 28°31.9' 77°54.6' 450.1 0.003 0.50 7.94 8.00

C233-023-HC 3 23-Feb 1016 28°31.9' 77°54.6' 400.1 0.001 0.35 6.39 8.05

18

Station Bot-


(N)

Longitude

(W)

Actual Depth

(m)

O2

(mL/L)

Chl a

(µg/L)

PO43-

(µM)

NO3-

(µM)

in situ

pH

C233-023-HC 4 23-Feb 1016 28°31.9' 77°54.6' 350.2 0.001 0.19 5.17 8.05

C233-023-HC 5 23-Feb 1016 28°31.9' 77°54.6' 300.3 0.002 0.17 4.85 8.05

C233-023-HC 6 23-Feb 1016 28°31.9' 77°54.6' 250.2 0.003 0.11 4.31 8.06

C233-023-HC 7 23-Feb 1016 28°31.9' 77°54.6' 200.2 0.003 0.25 3.55 8.07

C233-023-HC 8 23-Feb 1016 28°31.9' 77°54.6' 150.0 0.004 0.19 3.66 8.06

C233-023-HC 9 23-Feb 1016 28°31.9' 77°54.6' 100.1 0.030 0.08 2.68 8.07

C233-023-HC 10 23-Feb 1016 28°31.9' 77°54.6' 89.8 0.088 0.03 2.72 8.03

C233-023-HC 11 23-Feb 1016 28°31.9' 77°54.6' 80.8 0.219 0.25 1.90 8.07

C233-023-HC 12 23-Feb 1016 28°31.9' 77°54.6' 50.4 0.126 0.05 0.08 8.11

C233-023-HC 13 23-Feb 1016 28°31.9' 77°54.6' 3.0 0.079 0.11 0.09 8.10

C233-025-

Niskin

1 24-Feb 0001 28°25.5' 77°21.8' 3.0

C233-025-HC 13 24-Feb 0026 28°25.4' 77°21.9' 3.0 0.083 8.11

C233-028-HC 2 24-Feb 1027 28°35.0' 77°16.3' 400.5 0.001

C233-028-HC 3 24-Feb 1027 28°35.0' 77°16.3' 300.9 0.005

C233-028-HC 4 24-Feb 1027 28°35.0' 77°16.3' 200.5 0.019

C233-028-HC 5 24-Feb 1027 28°35.0' 77°16.3' 124.8 0.101

C233-028-HC 6 24-Feb 1027 28°35.0' 77°16.3' 99.8 0.186

C233-028-HC 7 24-Feb 1027 28°35.0' 77°16.3' 80.6 0.252

C233-028-HC 8 24-Feb 1027 28°35.0' 77°16.3' 60.1 0.161

C233-028-HC 9 24-Feb 1027 28°35.0' 77°16.3' 50.0 0.168

C233-028-HC 10 24-Feb 1027 28°35.0' 77°16.3' 45.0 0.133

C233-028-HC 11 24-Feb 1027 28°35.0' 77°16.3' 30.9 0.115

C233-028-HC 12 24-Feb 1027 28°35.0' 77°16.3' 19.8 0.101

C233-028-HC 13 24-Feb 1027 28°35.0' 77°16.3' 3.0 0.091 8.06

C233-030-

Niskin

1 25-Feb 0009 29°3.4' 76°37.6' 3.0

C233-034-HC 1 25-Feb 1030 29°19.0' 76°34.1' 379.0 0.002 7.83

C233-034-HC 2 25-Feb 1030 29°19.0' 76°34.1' 345.0 0.001 7.84

C233-034-HC 3 25-Feb 1030 29°19.0' 76°34.1' 416.0 7.95

C233-034-HC 4 25-Feb 1030 29°19.0' 76°34.1' 434.0 0.001 7.99

C233-034-HC 5 25-Feb 1030 29°19.0' 76°34.1' 451.0 8.03

C233-034-HC 6 25-Feb 1030 29°19.0' 76°34.1' 469.0 0.002 8.10

19

Station Bot-


(N)

Longitude

(W)

Actual Depth

(m)

O2

(mL/L)

Chl a

(µg/L)

PO43-

(µM)

NO3-

(µM)

in situ

pH

C233-034-HC 7 25-Feb 1030 29°19.0' 76°34.1' 489.0 0.003 8.13

C233-034-HC 9 25-Feb 1030 29°19.0' 76°34.1' 520.0 0.269 8.20

C233-034-HC 10 25-Feb 1030 29°19.0' 76°34.1' 536.0 0.280 8.21

C233-034-HC 13 25-Feb 1030 29°19.0' 76°34.1' 3.0 0.090 8.08

C233-034-HCb 1 25-Feb 1155 29°23.2' 76°35.2' 274.7 0.001 0.68 8.93 8.01

C233-034-HCb 2 25-Feb 1155 29°23.2' 76°35.2' 249.9 0.64 6.31

C233-034-HCb 3 25-Feb 1155 29°23.2' 76°35.2' 225.0 0.002 0.26 4.38

C233-034-HCb 4 25-Feb 1155 29°23.2' 76°35.2' 200.3 0.004 0.20 2.63

C233-034-HCb 6 25-Feb 1155 29°23.2' 76°35.2' 150.6 0.033 8.05

C233-034-HCb 7 25-Feb 1155 29°23.2' 76°35.2' 125.9 0.100 0.13 0.72

C233-034-HCb 8 25-Feb 1155 29°23.2' 76°35.2' 100.0 0.33 0.15

C233-034-HCb 9 25-Feb 1155 29°23.2' 76°35.2' 76.0 0.246 0.07 0.07 8.01

C233-034-HCb 10 25-Feb 1155 29°23.2' 76°35.2' 50.1 0.228 0.08 0.00

C233-034-HCb 11 25-Feb 1155 29°23.2' 76°35.2' 25.3 0.136 0.08 8.09

C233-034-HCb 12 25-Feb 1155 29°23.2' 76°35.2' 10.5 0.122 0.08 0.69

C233-037-HC 1 26-Feb 1017 29°22.4' 74°35.9' 1403.0 0.001 0.96 18.59 8.04

C233-037-HC 2 26-Feb 1017 29°22.4' 74°35.9' 1409.0 0.000 1.02 18.06 7.90

C233-037-HC 3 26-Feb 1017 29°22.4' 74°35.9' 1001.0 0.000 1.06 20.01 7.90

C233-037-HC 13 26-Feb 1017 29°22.4' 74°35.9' 3.0 0.145 0.01 0.49 8.04

C233-039-HC 1 27-Feb 1038 29°30.9' 73°19.9' 8.1 0.097 8.08

C233-039-HC 2 27-Feb 1038 29°30.9' 73°19.9' 7.8 0.103 8.05

C233-039-HC 3 27-Feb 1038 29°30.9' 73°19.9' 6.6 0.089 8.09

C233-039-HC 4 27-Feb 1038 29°30.9' 73°19.9' 6.2 0.103 7.96

C233-039-HC 5 27-Feb 1038 29°30.9' 73°19.9' 5.5 0.088 8.13

C233-039-HC 6 27-Feb 1038 29°30.9' 73°19.9' 5.0 0.071 8.10

C233-039-HC 7 27-Feb 1038 29°30.9' 73°19.9' 4.9 0.086 8.09

C233-039-HC 8 27-Feb 1038 29°30.9' 73°19.9' 4.1 0.073 8.11

C233-039-HC 9 27-Feb 1038 29°30.9' 73°19.9' 3.4 0.070 8.09

C233-039-HC 10 27-Feb 1038 29°30.9' 73°19.9' 3.0 0.079 8.06

C233-039-HC 11 27-Feb 1038 29°30.9' 73°19.9' 2.5 0.057 8.06

C233-039-HC 12 27-Feb 1038 29°30.9' 73°19.9' 1.6 0.107 8.05

C233-039-HC 13 27-Feb 1038 29°30.9' 73°19.9' 3.0 0.067 8.02

C233-043-HC 1 28-Feb 1002 29°35.2' 71°42.9' 500.3 0.001 1.21 5.28 8.04

20

Station Bot-


(N)

Longitude

(W)

Actual Depth

(m)

O2

(mL/L)

Chl a

(µg/L)

PO43-

(µM)

NO3-

(µM)

in situ

pH

C233-043-HC 2 28-Feb 1002 29°35.2' 71°42.9' 450.4 0.002 0.31 5.03 8.04

C233-043-HC 3 28-Feb 1002 29°35.2' 71°42.9' 400.3 0.001 0.36 4.39 8.05

C233-043-HC 4 28-Feb 1002 29°35.2' 71°42.9' 349.9 0.001 0.25 3.94 8.06

C233-043-HC 5 28-Feb 1002 29°35.2' 71°42.9' 250.3 0.071 8.28

C233-043-HC 6 28-Feb 1002 29°35.2' 71°42.9' 200.3 0.010 0.08 1.89 8.08

C233-043-HC 7 28-Feb 1002 29°35.2' 71°42.9' 149.9 0.051 0.09 0.50 8.11

C233-043-HC 8 28-Feb 1002 29°35.2' 71°42.9' 125.4 0.103 0.08 0.19 8.12

C233-043-HC 9 28-Feb 1002 29°35.2' 71°42.9' 99.9 0.134 0.00 0.11 8.11

C233-043-HC 10 28-Feb 1002 29°35.2' 71°42.9' 90.0 0.180 0.09 8.06

C233-043-HC 11 28-Feb 1002 29°35.2' 71°42.9' 59.9 0.202 0.12 8.11

C233-043-HC 12 28-Feb 1002 29°35.2' 71°42.9' 30.2 0.078 0.08 8.11

C233-043-HC 13 28-Feb 1002 29°35.2' 71°42.9' 3.0 0.080 0.01 0.12 8.11

C233-045-

Niskin

1 1-Mar 0003 29°29.4' 70°36.9' 3.0

C233-048-HC 1 1-Mar 1012 29°28.9' 69°53.2' 499.5

C233-048-HC 2 1-Mar 1012 29°28.9' 69°53.2' 449.8

C233-048-HC 3 1-Mar 1012 29°28.9' 69°53.2' 400.1

C233-048-HC 4 1-Mar 1012 29°28.9' 69°53.2' 349.2

C233-048-HC 5 1-Mar 1012 29°28.9' 69°53.2' 250.6

C233-048-HC 6 1-Mar 1012 29°28.9' 69°53.2' 199.9

C233-048-HC 7 1-Mar 1012 29°28.9' 69°53.2' 150.9

C233-048-HC 8 1-Mar 1012 29°28.9' 69°53.2' 125.2

C233-048-HC 9 1-Mar 1012 29°28.9' 69°53.2' 100.3

C233-048-HC 10 1-Mar 1012 29°28.9' 69°53.2' 81.2

C233-048-HC 11 1-Mar 1012 29°28.9' 69°53.2' 59.6

C233-048-HC 12 1-Mar 1012 29°28.9' 69°53.2' 30.9

C233-048-HC 13 1-Mar 1012 29°28.9' 69°53.2' 3.0 0.118 8.09

C233-050-

Niskin

1 2-Mar 0011 29°25.8' 68°54.2' 3.0

C233-050-HC 13 2-Mar 0038 29°26.0' 68°54.4' 3.0 0.056 8.09

C233-059-

Niskin

1 6-Mar 2348 26°28.2' 69°15.2' 3.0

C233-061-HC 1 7-Mar 1043 26°17.5' 68°58.6' 499.4 5.12

C233-061-HC 2 7-Mar 1043 26°17.5' 68°58.6' 449.9 5.12

21

Station Bot-


(N)

Longitude

(W)

Actual Depth

(m)

O2

(mL/L)

Chl a

(µg/L)

PO43-

(µM)

NO3-

(µM)

in situ

pH

C233-061-HC 3 7-Mar 1043 26°17.5' 68°58.6' 400.5 5.11

C233-061-HC 4 7-Mar 1043 26°17.5' 68°58.6' 350.4 5.1

C233-061-HC 5 7-Mar 1043 26°17.5' 68°58.6' 250.5 5.39

C233-061-HC 6 7-Mar 1043 26°17.5' 68°58.6' 199.9 4.93

C233-061-HC 7 7-Mar 1043 26°17.5' 68°58.6' 149.1 5.12

C233-061-HC 8 7-Mar 1043 26°17.5' 68°58.6' 124.7 5.11

C233-061-HC 9 7-Mar 1043 26°17.5' 68°58.6' 100.1 4.96

C233-061-HC 10 7-Mar 1043 26°17.5' 68°58.6' 79.7 5.53

C233-061-HC 11 7-Mar 1043 26°17.5' 68°58.6' 59.4 5.37

C233-061-HC 12 7-Mar 1043 26°17.5' 68°58.6' 29.6 5.27

C233-061-HC 13 7-Mar 1043 26°17.5' 68°58.6' 3.0 0.034 8.09

C233-063-

Niskin

1 7-Mar 2343 26°11.2' 67°57.3' 3.0

C233-066-HC 1 8-Mar 1233 25°48.1' 67°4.0' 499.4 0.001

C233-066-HC 2 8-Mar 1233 25°48.1' 67°4.0' 450.5 0.002

C233-066-HC 3 8-Mar 1233 25°48.1' 67°4.0' 349.9 0.001

C233-066-HC 4 8-Mar 1233 25°48.1' 67°4.0' 250.2 0.002

C233-066-HC 5 8-Mar 1233 25°48.1' 67°4.0' 149.4 0.233

C233-066-HC 6 8-Mar 1233 25°48.1' 67°4.0' 130.4 0.164

C233-066-HC 7 8-Mar 1233 25°48.1' 67°4.0' 119.8 0.182

C233-066-HC 8 8-Mar 1233 25°48.1' 67°4.0' 109.8 0.132

C233-066-HC 9 8-Mar 1233 25°48.1' 67°4.0' 99.8 0.115

C233-066-HC 10 8-Mar 1233 25°48.1' 67°4.0' 79.8 0.080

C233-066-HC 11 8-Mar 1233 25°48.1' 67°4.0' 60.2 0.038

C233-066-HC 12 8-Mar 1233 25°48.1' 67°4.0' 30.0 0.040

C233-066-HC 13 8-Mar 1233 25°48.1' 67°4.0' 3.0 0.028 8.08

C233-068-

Niskin

1 8-Mar 2338 25°14.6' 66°26.9' 3.0

C233-068-HC 13 9-Mar 0000 25°14.5' 66°27.1' 3.0 0.035 8.10

C233-071-HC 1 9-Mar 1053 24°55.9' 66°8.8' 250.2

C233-071-HC 2 9-Mar 1053 24°55.9' 66°8.8' 249.9 4.69

C233-071-HC 3 9-Mar 1053 24°55.9' 66°8.8' 220.0

C233-071-HC 4 9-Mar 1053 24°55.9' 66°8.8' 218.7 4.6

22

Station Bot-


(N)

Longitude

(W)

Actual Depth

(m)

O2

(mL/L)

Chl a

(µg/L)

PO43-

(µM)

NO3-

(µM)

in situ

pH

C233-071-HC 5 9-Mar 1053 24°55.9' 66°8.8' 191.1

C233-071-HC 6 9-Mar 1053 24°55.9' 66°8.8' 189.4 4.74

C233-071-HC 7 9-Mar 1053 24°55.9' 66°8.8' 150.8

C233-071-HC 8 9-Mar 1053 24°55.9' 66°8.8' 150.3 4.7

C233-071-HC 9 9-Mar 1053 24°55.9' 66°8.8' 99.9

C233-071-HC 10 9-Mar 1053 24°55.9' 66°8.8' 99.6 5.11

C233-071-HC 11 9-Mar 1053 24°55.9' 66°8.8' 50.0

C233-071-HC 12 9-Mar 1053 24°55.9' 66°8.8' 49.2 5.3

C233-071-HC 13 9-Mar 1053 24°55.9' 66°8.8' 3.0 0.029 8.08

C233-073-

Niskin

1 10-Mar 0045 24°6.8' 65°10.5' 3.0

C233-076-HC 1 10-Mar 1105 23°35.4' 64°29.2' 500.1 4.84 0.000 0.56 11.11 7.95

C233-076-HC 2 10-Mar 1105 23°35.4' 64°29.2' 450.9 5.06 0.36 9.47 8.01

C233-076-HC 3 10-Mar 1105 23°35.4' 64°29.2' 399.7 5.08 0.27 6.51 8.03

C233-076-HC 4 10-Mar 1105 23°35.4' 64°29.2' 350.2 5.5 0.001 0.19 4.64 8.02

C233-076-HC 5 10-Mar 1105 23°35.4' 64°29.2' 299.5 5.26 0.16 4.76 8.04

C233-076-HC 6 10-Mar 1105 23°35.4' 64°29.2' 249.7 5.06 0.002 0.10 4.36 8.04

C233-076-HC 8 10-Mar 1105 23°35.4' 64°29.2' 149.2 2.93 0.074 0.11 1.39 8.04

C233-076-HC 9 10-Mar 1105 23°35.4' 64°29.2' 125.1 3.27 0.190 0.20 0.24 8.05

C233-076-HC 10 10-Mar 1105 23°35.4' 64°29.2' 110.8 3.23 0.174 0.03 0.01 8.07

C233-076-HC 11 10-Mar 1105 23°35.4' 64°29.2' 50.3 3.22 0.039 0.03 0.11 8.11

C233-076-HC 12 10-Mar 1105 23°35.4' 64°29.2' 25.3 5.13 0.036 0.03 8.12

C233-076-HC 13 10-Mar 1105 23°35.4' 64°29.2' 3.0 0.039 0.14 0.03 8.10

C233-078-

Niskin

1 10-Mar 2358 22°53.2' 63°37.1' 3.0

C233-084-

Niskin

1 11-Mar 2342 21°29.9' 62°36.7' 3.0

C233-086-HC 1 12-Mar 1055 20°49.3' 62°9.7' 500.6 4.19 0.001 0.73 14.74 7.89

C233-086-HC 2 12-Mar 1055 20°49.3' 62°9.7' 451.1 0.001 0.60 13.35 7.94

C233-086-HC 3 12-Mar 1055 20°49.3' 62°9.7' 400.8 4.49 0.001 0.56 10.82 7.97

C233-086-HC 4 12-Mar 1055 20°49.3' 62°9.7' 349.5 0.001 0.04 5.28 8.03

C233-086-HC 5 12-Mar 1055 20°49.3' 62°9.7' 299.2 5.25 0.001 0.20 4.43 8.04

C233-086-HC 7 12-Mar 1055 20°49.3' 62°9.7' 199.3 4.79 0.029 0.25 2.26 7.99

C233-086-HC 8 12-Mar 1055 20°49.3' 62°9.7' 150.2 0.171 0.08 0.20 8.07

23

Station Bot-


(N)

Longitude

(W)

Actual Depth

(m)

O2

(mL/L)

Chl a

(µg/L)

PO43-

(µM)

NO3-

(µM)

in situ

pH

C233-086-HC 9 12-Mar 1055 20°49.3' 62°9.7' 125.3 4.58 0.244 0.22 0.09 8.08

C233-086-HC 10 12-Mar 1055 20°49.3' 62°9.7' 109.1 0.198 0.81 0.11 8.09

C233-086-HC 11 12-Mar 1055 20°49.3' 62°9.7' 50.3 5.15 0.061 0.06 8.11

C233-086-HC 12 12-Mar 1055 20°49.3' 62°9.7' 25.7 5.14 0.048 0.01 8.12

C233-086-HC 13 12-Mar 1055 20°49.3' 62°9.7' 3.0 0.043 0.01 8.27

C233-088-

Niskin

1 12-Mar 2339 19°47.6' 61°42.2' 3.0

C233-091-HC 1 13-Mar 1035 18°53.9' 61°23.8' 499.1 4.51 0.001 1.17 20.62 7.86

C233-091-HC 2 13-Mar 1035 18°53.9' 61°23.8' 450.7 4.48 0.003 0.85 14.91 7.93

C233-091-HC 3 13-Mar 1035 18°53.9' 61°23.8' 399.9 4.48 0.003 0.71 13.93 7.96

C233-091-HC 4 13-Mar 1035 18°53.9' 61°23.8' 349.7 4.69 0.002 0.51 12.55 7.98

C233-091-HC 5 13-Mar 1035 18°53.9' 61°23.8' 299.9 4.93 0.002 0.50 7.76 7.96

C233-091-HC 6 13-Mar 1035 18°53.9' 61°23.8' 249.7 5.47 0.002 0.31 6.91 8.01

C233-091-HC 7 13-Mar 1035 18°53.9' 61°23.8' 200.3 4.99 0.016 0.24 4.77 8.00

C233-091-HC 8 13-Mar 1035 18°53.9' 61°23.8' 149.6 4.88 0.127 0.23 2.37 8.05

C233-091-HC 9 13-Mar 1035 18°53.9' 61°23.8' 135.5 5.27 0.294 0.33 1.37 8.05

C233-091-HC 10 13-Mar 1035 18°53.9' 61°23.8' 110.2 4.65 0.12 0.15 8.09

C233-091-HC 11 13-Mar 1035 18°53.9' 61°23.8' 49.0 4.65 0.089 0.01 0.21 8.12

C233-091-HC 12 13-Mar 1035 18°53.9' 61°23.8' 25.3 8.10

C233-091-HC 13 13-Mar 1035 18°53.9' 61°23.8' 3.0 0.089 0.02 0.05 8.13

24

Table 6. Free CTD sample locations and surface data for each site. Station Date Time Latitude (N) Longitude (W) Water Depth (m) Temperature (°C) Salinity (psu) Fluorescence

C233-066-CTD 8-Mar-11 1132 25°48.5' 67°3.2' 5245 23.7 36.78 1127.9

C233-073-CTD 9-Mar-11 2357 24°7.4' 65°10.7' 5803 24.4 36.4 914.6

C233-076-CTD 10-Mar-11 1105 23°35.4' 64°29.2' 5772 25 36.12 905.1

C233-082-CTD 11-Mar-11 1027 22°13.8' 63°3.3' 5720 24.8 36.48 961.5

C233-084-CTD 11-Mar-11 2351 21°29.9' 62°36.8' 5700 25.2 36.38 1068.1

C233-086-CTD 12-Mar-11 1055 20°49.3' 62°9.7' 5665 25.3 36.39 1069.5

C233-091-CTD 13-Mar-11 1038 18°53.9' 61°23.8' 6444 26.2 36.54 1160.3

C233-095-CTD 14-Mar-11 0945 16°55.6' 61°32.5' 1747 26.4 36.48 1328.4

C233-097-CTD 15-Mar-11 0835 15°34.5' 61°31.1' 1105 26.7 36.22 1582.7

C233-101-CTD 20-Mar-11 1021 16°29.7' 62°22.7' 1689 26.6 36.28 1484.5

Table 7. Neuston net tow data. Station Date Time Latitude

(N)

Longitude

(W)

Tow

Area (m2)

Zoo-

plankton Biomass

(ml)

Zoo-

plankton Density

(ml/m2)

Nekton

>2cm

Gelat-

inous >2cm

Lepto-

cephali (#)

Halobates

(#)

Myctophid

(#)

Sargassum

natans (g)

Sargassum

fluitans (g)

Plastic

Pieces

Tar

C233-

001-NT

19-

Feb

0008 24°17.6' 81°32.7' 1817.9 171.0 0.0941 3 1 0 0 0 0 10 0 0

C233-

004-NT

19-

Feb

1337 24°19.6' 80°59.9' 2896.4 0.3 0.0001 0 5 0 0 0 2 0 0 0

C233-006-NT

20-Feb

0138 24°25.7' 80°31.5' 1852.0 16.0 0.0086 0 6 0 0 0 8 0 0 0

C233-

009-NT

20-

Feb

1152 24°34.2' 80°15.0' 1391.6 2.5 0.0018 31 80 0 0 0 0 0 2 0

C233-011-NT

21-Feb

0001 25°30.7' 79°57.2' 3447.8 84.0 0.0244 14 2 0 3 0 0 2.5 1 0

C233-

014-NT

21-

Feb

1139 26°38.1' 79°40.4' 2037.2 2.5 0.0012 0 0 0 0 0 0 0 1 1

C233-016-NT

22-Feb

0147 27°54.5' 79°7.0' 2284.6 1.5 0.0007 5 1 0 0 1 0 0 0 0

C233-

019-NT

22-

Feb

1211 28°21.8' 78°45.9' 1939.3 2.0 0.0010 0 0 0 0 0 2 0 1 0

C233-021-NT

23-Feb

0130 28°31.8' 78°20.4' 1133.7 51.0 0.0450 9 3 0 0 13 230 0 6 0

C233-

024-NT

23-

Feb

1123 28°31.8' 77°55.1' 687.7 56.0 0.0814 123 12 0 0 0 77 4817 68 12

C233-026-NT

24-Feb

0214 28°24.4' 77°22.3' 1232.1 5.0 0.0041 1 5 0 0 0 0 0 0 0

25

Station Date Time Latitude

(N)

Longitude

(W)

Tow

Area (m2)

Zoo-

plankton Biomass

(ml)

Zoo-

plankton Density

(ml/m2)

Nekton

>2cm

Gelat-

inous >2cm

Lepto-

cephali (#)

Halobates

(#)

Myctophid

(#)

Sargassum

natans (g)

Sargassum

fluitans (g)

Plastic

Pieces

Tar

C233-

029-NT

24-

Feb

1143 28°34.0' 77°17.8' 1508.6 4.0 0.0027 1 1 0 0 0 7 200 1 0

C233-

032-NT

25-

Feb

0204 29°3.4' 76°41.3' 1728.8 30.0 0.0174 7 2 0 0 5 14 625 5 1

C233-

035-NT

26-

Feb

0013 29°27.7' 75°20.9' 461.1 11.0 0.0239 51 6 7 1 4 0 0 0 0

C233-

040-NT

27-

Feb

1154 29°32.0' 73°19.7' 1552.6 16.0 0.0103 1 0 0 0 0 0 19 4 0

C233-

041-NT

28-

Feb

0010 29°36.4' 72°40.6' 2133.5 49.0 0.0230 195 4 160 0 8 0 8 36 0

C233-

044-NT

28-

Feb

1107 29°33.9' 71°43.3' 1568.3 4.0 0.0026 1 0 0 0 0 0 167 1 0

C233-

047-NT

1-

Mar

0200 29°31.0' 70°39.7' 1109.2 15.5 0.0140 30 13 18 0 8 73 0 3 0

C233-

049-NT

1-

Mar

1106 29°30.1' 69°53.8' 2292.2 3.0 0.0013 0 1 0 0 0 0 11 0 1

C233-

060-NT

7-

Mar

0027 26°27.8' 69°15.3' 1138.5 5.0 0.0044 0 1 1 3 11 0 44 5 1

C233-

062-NT

7-

Mar

1149 26°17.7' 68°58.5' 1122.5 1.5 0.0013 1 0 0 0 0 0 59 8 0

C233-

065-NT

8-

Mar

0115 26°9.8' 67°56.6' 2120.1 6.0 0.0028 7 0 5 0 1 1.5 150 14 1

C233-

067-NT

8-

Mar

1336 25°47.6' 67°4.9' 1430.3 3.0 0.0021 2 2 0 0 0 0 83 3 0

C233-069-NT

9-Mar

0117 25°14.0' 66°27.8' 897.7 6.5 0.0072 94.3 0 277 0 8 0 41 2 2

C233-

072-NT

9-

Mar

1200 24°55.5' 66°9.3' 742.3 1.7 0.0023 0 0.1 0 0 0 2 6 0 0

C233-074-NT

10-Mar

0123 24°6.3' 65°9.9' 2667.0 5.0 0.0019 4 0 0 9 6 0 56 8 0

C233-

077-NT

10-

Mar

1210 23°36.6' 64°29.5' 998.0 2.0 0.0020 0 0 0 1 0 25 0 1 0

C233-080-NT

11-Mar

0126 22°50.7' 63°34.3' 2297.0 4.0 0.0017 16.5 0.1 14 4 3 5 0 2 0

C233-

083-NT

11-

Mar

1126 22°12.0' 63°3.5' 1910.8 1.6 0.0008 0 0 0 1 0 0 79 0 1

C233-

085-NT

12-

Mar

0046 21°29.5' 62°36.8' 818.8 11.0 0.0134 0 2.5 1 0 3 1 0 2 0

C233-

087-NT

12-

Mar

1205 20°48.9' 62°9.9' 1310.5 18.0 0.0137 0.5 0 0 2 0 0 0 0 1

C233-090-NT

13-Mar

0117 19°44.1' 61°42.7' 2994.5 2.0 0.0007 26 0 4 11 9 97 0 1 0

C233-

092-NT

13-

Mar

1147 18°53.2' 61°24.5' 1680.4 1.5 0.0009 0.5 0 0 4 0 0 0 1 0

26

Station Date Time Latitude

(N)

Longitude

(W)

Tow

Area (m2)

Zoo-

plankton Biomass

(ml)

Zoo-

plankton Density

(ml/m2)

Nekton

>2cm

Gelat-

inous >2cm

Lepto-

cephali (#)

Halobates

(#)

Myctophid

(#)

Sargassum

natans (g)

Sargassum

fluitans (g)

Plastic

Pieces

Tar

C233-

093-NT

13-

Mar

2340 17°45.1' 61°15.8' 2292.4 15.0 0.0065 3.2 0 17 8 3 11 202 0 0

C233-

096-NT

14-

Mar

1042 16°54.6' 61°33.7' 2835.8 1.2 0.0004 0 0 0 17 0 13 0 0 0

C233-

098-NT

15-

Mar

0928 15°33.6' 61°31.2' 1901.5 5.0 0.0026 0 0 0 0 0 0 0 1 0

C233-

100-NT

20-

Mar

0222 16°12.5' 61°58.8' 2037.0 4.5 0.0022 0 0 0 3 0 0 0 0 0

C233-

103-NT

21-

Mar

0011 16°56.3' 62°58.8' 2390.4 5.0 0.0021 0 0 0 2 2 0 0 0 1

C233-

104-NT

22-

Mar

1126 18°10.4' 64°35.1' 1823.6 9.1 0.0050 0 0 0 1 0 7 0 2 0

C233-

106-NT

22-

Mar

1708 18°2.1' 64°31.8' 1813.0 4.0 0.0022 0 0 0 0 0 1 0 0 0

C233-

107-NT

23-

Mar

1405 18°15.7' 64°47.9' 2113.3 1.5 0.0007 0 0 0 0 0 0 0 0 0

C233-

108-NT

23-

Mar

1647 18°14.3' 64°48.4' 1968.4 2.0 0.0010 0 0 0 0 0 0 0 0 0

27

Table 8. Meter net tow data. Mesh size for meter net (MN) and 2 meter net (2MN) is 335µm and 1000 µm, respectively. Net area for

MN is 0.785m2 and for 2MN is 2.49 m

2.

Station Date Time Lat (N) Long

(W)

Tow

depth

(m)

Tow

Length

(m)

Tow

Volum

e (m3)

Zoop

Biomass

(ml)

Zpl

Density

(ml/m3)

Nekton

>2cm

Gelatinous

>2cm

Lepto-

cephali

Halo-

bates

Myctophid

C233-

005-

MN

19-

Feb

2353 24°26.5' 80°36.3' 98 2239.9 1758.3 144 0.0819 2 0 2 0 2

C233-

015-

MN

21-

Feb

2341 27°52.3' 79°6.8' 127 1984.7 1558.0 56 0.0359 10 5 0 0 4

C233-

031-

MN

25-

Feb

0056 29°3.6' 76°39.3' 100 2623.8 2059.6 100 0.0486 11 26.5 8 0 11

C233-

046-

MN

1-

Mar

0038 29°29.8' 70°37.6' 100 2242.3 1760.2 70 0.0398 15 14 1 0 19

C233-

064-

MN

8-

Mar

0013 26°10.4' 67°57.6' 123.6

9

2204.2 1730.3 33 0.0191 19 0 5 0 5

C233-

079-

MN

11-

Mar

0024 22°52.3' 63°36.4' 101.9 2358.5 1851.4 49 0.0265 8 2 4 0 6

C233-

089-

MN

13-

Mar

0010 19°46.7' 61°42.4' 65.5 2490.4 1954.9 41 0.0210 1 1 0 0 1

C233-

099-

2MN

20-

Mar

0030 16°15.0' 61°59.6' 276.5 3010.9 7497.0 75 0.0100 22 8 0 0 3

C233-

102-

2MN

20-

Mar

1119 16°28.1' 62°23.1' 218.2

8

6400.0 15936.

0

91 0.0057 4 5 1 0 0

CRUISE REPORT C-233

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