Theme II: Fisheries Dynamics The CIMAS Program Jerry Ault Manoj Shivlani Monica Valle Jim Bohnsack...
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Transcript of Theme II: Fisheries Dynamics The CIMAS Program Jerry Ault Manoj Shivlani Monica Valle Jim Bohnsack...
Theme II: Fisheries DynamicsThe CIMAS Program
Jerry Ault
Manoj Shivlani
Monica Valle
Jim Bohnsack
Peter Ortner
Bill Richards
Contributors
David Die
Maria Criales
David Jones
Monica Lara
Goal 1: Protect, restore and manage the use of coastal and ocean resources through ecosystem management by:
Monitoring and observingUnderstanding and describingAssessing and predictingEngaging and informingManaging resources
Strategic Plan - FISHERIES
CIMASobjectivesfor theme II
1. Understanding and describing
2. Assessing andpredicting
3. Engaging andinforming
Describe functional bio-physical processes that control fishery impacts
Develop simulation models for protected species, ecosystems, and fisheries.
Develop procedures for the evaluation of regulatory options in management of marine fisheries and protected species
Strategic Plan - CIMAS Objectives
From Florida Bay to the Gulf of Guinea
Sailfish catches (source ICCAT)
Recruitment tosouth Florida estuaries
Assessment of highly-migratorypelagic fish
1. Understanding and describing (Local scale)
Abundance of demersal zooplankton and small fishes
ADCP
OPC
ADCP
OPC
Continuous counting of particles for sizes between 100um to 10 cm:
• Migrations
• Diurnal patterns
• Tidal cycles
1. Understanding and describing (Regional scale)
Recruitment processes in South Florida
Certain elements can be incorporated into the matrix of fish otoliths. These elements form the elemental fingerprint unique to the water mass in which the fish resided and can be used for elucidating recruitment pathways for juvenile fish.
Whale Harbor Channel
O N D J F M A M J J A S O N D J F M A M J0
5
10
15
20
25
curr
ent m
agni
tude
inde
x
0
1
2
3
4
5countercurrentonshore current
0
100
200
300
400
m
ean
dens
itypo
stla
rvae
/100
0 m
3
97 98 99
1. Understanding and describing (Regional scale)
Shrimp Post-larval transport intoFlorida Bay
Peaks in the abundance of post-larvae coinciding with cyclonic eddies were detected passing through the Middle Florida Keys.Simulations highlight the importance of swimming behavior.
1. Understanding and describing (Regional scale)
Large Eddy, Small Eddy--Supplying Recruits to the South Florida Ecosystem
Contours of total fish larvae superimposed over
Sea Surface Height Model
The eddy process provides a potential mechanism forretention, nourishmentat the spawning groundand deliveryto the nursery areas
1. Understanding and describing (Basin scale)
Yellowfin tuna: effect of
uncertainty in fishery removals
1950-1979
0.4
0.6
0.8
1
1.2B
rati
o
1950-1999
0.4
0.6
0.8
1
1.2
0.2 0.4 0.6 0.8 1
Proportion reported
Bra
tio
Bratio = Bcurrent/Bmsy
Reporting of catch was assumed to have increased linearly in time.
Exploited Coral Reef Fishes
ye
llow
mo
uth
sp
eck
led
hin
d
sc
ho
olm
as
ter
sa
ilor’
s c
ho
ice
% S
paw
nin
g P
ote
nti
al R
atio
100
0
10
20
30
40
50
60
70
80
90
bla
ck
red
gra
ys
by
co
ne
yg
ag
na
ssa
uy
ello
wfi
n
red
hin
dro
ck h
ind
sc
amp
sn
ow
y
ye
llow
edg
ew
ars
aw
jew
fis
h
ho
gfi
sh
gra
ym
utt
on
ye
llow
tail
bla
ck
fin
cu
be
ra do
g
lan
e
bla
ck
red
sil
k
ve
rmil
lio
n
blu
es
trip
ed
wh
ite
tom
tate
mar
ga
te
ba
rra
cu
da
GROUPERSSNAPPERS GRUNTS
Overfishing (30% SPR)
Serial overfishing
in theFlorida Keys
2: Assessing and predicting (regional scale)
Combining fishery-independent andfishery-dependent data in the assessment of reef fishes
2: Assessing and predicting (regional scale)
Stock Assessment Scenarios for Caribbean Queen Conch
ASPIC B/Bmsy and F/Fmsy Ratios
at MSY=[1.0e5-1.7e5]
0
1
2
3
4
5
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
Year
B/B
msy
& F
/Fm
sy F/Fmsy
B/Bmsy
Stocks of queen conch stock in the U.S. Caribbean are overfished and are undergoing overfishing.
2: Assessing and predicting (Basin scale)
ICCAT assessments: billfish, tropical tunas
0
1
2
3
4
5
6
1950 1970 1990 2010Year
B/B
msy
0
1
2
3
4
5
6
F/F
msy
White marlin
3. Engaging and informing (Regional scale)
Effects of No-Take Zones on Reef Fish
populations inthe Florida Keys National Marine
Sanctuary
Population Density Trends
-5
0
5
10
15
20
25
30
35
40
0 1 2 3 4 5
Years After Protection
Popu
latio
n C
hang
e Fa
ctor
Yellowtail
All Grouper
Black Grouper
Gray Snapper
Stoplight
Striped Parrot
Framework for Management Strategy Evaluation
Develop software for simulations of fishery systems to evaluate management strategies
3. Engaging and informing (Basin scale)
Compliance
Stock
CatchFleets Samples
Stock
TACCatch
Commission
Center for Independent Experts
Develop a system to provide independent peer reviews of the science carried out by the NOAA Fisheries to strengthen Quality Assurance efforts under the NOAA Strategic Plan.
1
2
3
4
5N
um
be
r o
f re
vie
ws
1999 2000 2001Year
Programmatic Stock Assessment
Endangered Species
The CIE is evolving to cover all areas of science conducted by NOAA
Fisheries
3. Engaging and informing
Theme II: new horizons
• Develop quantitative socio-economic indicators for fisheries sustainability (link to Theme IV)
• Link estuary models to those from the reef ecosystem (link to Theme III) • Integrate basin scale oceanographic model to assessments of highly migratory species