the gulf of alaska project: an integrated ecosystem research project
DESCRIPTION
The Gulf of Alaska Project: An Integrated Ecosystem Research Project. Georgina Gibson, Sarah Hinckley, Russ Hopcroft, Jamal Moss, and Olav Ormseth. NOAA Fisheries. A. Aguilar-Islas (UAF) S. Atkinson (UAF) K. Aydin (NOAA) S. Budge (Dalhousie U.) B. Coffin (UAF) K. Coyle (UAF) - PowerPoint PPT PresentationTRANSCRIPT
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The Gulf of Alaska Project: An Integrated Ecosystem
Research Project
Georgina Gibson, Sarah Hinckley, Russ Hopcroft, Jamal Moss, and Olav Ormseth
NOAA Fisheries
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NOAA Fisheries
A. Aguilar-Islas (UAF)S. Atkinson (UAF)K. Aydin (NOAA)S. Budge (Dalhousie U.)B. Coffin (UAF)K. Coyle (UAF)N. Deans (NPRB)A. DeRobertis (NOAA)D. Dickson (NPRB)M. Doyle (UW)J. Duffy-Anderson (NOAA)W. Fournier (NOAA)K. Frederickson (WWU)G. Gibson (UAF)N. Golden (USGS)M. Guttormsen (NOAA)L. Guy (UW)
K. Hedstrom (UAF)J. Heifetz (NOAA)R. Heintz (NOAA)A. Hermann (UW)S. Hinckley (NOAA)R. Hopcroft (UAF)J. Horne (UW)N. Kachel (UW)C. Ladd (NOAA)A. Matarese (NOAA)D. McGowan (UW)C. Mordy (UW) J. Moss (NOAA)F. Mueter (UAF)J. Napp (NOAA)O. Ormseth (NOAA)C. Parada (IIP)
K. Rand (NOAA)J. Reid (USGS)R. Rember (IARC)K. Shotwell (NOAA)L. Slater (USFWS)P. Stabeno (NOAA/PMEL)W. Stockhausen (NOAA)D. Stockwell (UAF)S. Strom (WWU)P. Sullivan (UW)J. Vollenweider (NOAA)J. Waite (UAF)S. Wang (S. Ecological)F. Wiese (NPRB)C. Wilson (NOAA)M. Zimmerman (NOAA)
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Scope & Breadth
NOAA Fisheries
“How do environmental and anthropogenic processes, including climate change, affect trophic levels and dynamic linkages among
trophic levels, with emphasis on fish and fisheries, marine mammals, and seabirds within the Gulf of Alaska”
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NOAA Fisheries
• Interdisciplinary Study• $17.5 million-study• 5 years (2010 – 2014)• >40 scientists from 11 institutions
• Gauntlet for Groundfishes• Sablefish• Walleye pollock• Pacific ocean perch• Pacific cod• Arrowtooth flounder
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NOAA Fisheries
currents
temperature, nutrients
prey, predation
competition
habitat
What factors most affect how the 5 target species of groundfish get from here…
…to here?
The Gauntlet
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NOAA Fisheries
Project Conceptual Model
climate & oceanography
transport
primary and secondary productivity
forage fishes
eggs & larvae
YOY & juveniles
seabirds & marine mammals
adults
5 target groundfish species
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NOAA Fisheries
Research Components
Lower Trophic Level
Middle Trophic Level Upper Trophic Level
Modeling
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Retrospective Analysis Group
• Historical datasets– Identified 100 historical datasets
• Baseline information on ecosystem processes• Identify mechanisms influencing recruitment• Identify long-term regional trends• All trophic level components
NOAA Fisheries
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SST Variability (EOF analysis)
First mode (EOF 1, 70.8%) Second mode (EOF 2, 9.2%)
165W 160W 155W 150W 145W 140W 135W 130W
50N
52N
54N
56N
58N
60N
62N
0.01 0.005 0 0.0145 0.029
70.8%
1000 m isobath
y.po
s
-50
050
1998 2000 2002 2004 2006 2008 2010
165W 160W 155W 150W 145W 140W 135W 130W
50N
52N
54N
56N
58N
60N
62N
-0.036 -0.018 0 0.0205 0.041
9.2%
0
1000 m isobath
y.po
s
-40
020
40
1998 2000 2002 2004 2006 2008 2010
F. Mueter (UAF)
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Spatial Patterns in Chl. a Anomalies K-means cluster analysis suggests 3 relatively distinct regions!
165W 160W 155W 150W 145W 140W 135W 130W
50N
54N
58N
62N
Jason Waite will give an in-depth analysis of Chl. a data Thursday @11:15
F. Mueter (UAF)
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-0.5 0.0 0.5 1.0
-0.5
0.0
0.5
Axis 1
Axi
s 2
Ordination of Groundfish Species Comp. NMFS Bottom Trawl Survey
Strong differences in species comp.
east/west of 147o W
West of 147o WEast of 147o W
F. Mueter (UAF)
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-170 -165 -160 -155 -150 -145 -140 -135
5254
5658
6062
-170 -165 -160 -155 -150 -145 -140 -135
5254
5658
6062
East-West Gradients in Groundfish CPUE (-) and Species Diversity (-)
Trend component
Vt
0 5 10 15 20 25
1.1
1.2
1.3
1.4
1.5
1.6
1.7
Time of BP(s) 1415
Trend component
Alongshore distance (km)
Vt
0 5 10 15 20 25
2.8
3.0
3.2
3.4
3.6
3.8
Time of BP(s) 1531diversityCPUE
Alongshore distance (*100 km)
N
orm
aliz
ed s
cale
Catch-per-unit-effort (all species)
Species diversity(Shannon-Wiener)
Breakpointat ~148 oW
F. Mueter (UAF)
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NOAA Fisheries
Gulf of Alaska
Summer & Fall Field Surveys
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Oceanography:
NOAA Fisheries
CTD
Nutrients
Chlorophyll - a
Microzooplankton
http://bioloc.coas.oregonstate.edu/SherrLab/GLOBECposterciliates.jpg
Phytoplankton
http://www.dtplankton.com/images/PRB-1.jpg
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Zooplankton & Ichthyoplankton
NOAA Fisheries
Zooplankton
Bongo60cm
505 µm Oblique
Larval Fish
Bongos20cm
153 µm oblique
Neuston30x50cm
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Fish & Acoustics
NOAA Fisheries
Fish Abundance
Surface / midwater Rope Trawl (Top 25m)
Age-0 FishMidwater Acoustics
Caloric Content / LipidDiet
P.Cod Pollock
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Seabirds & Marine Mammals:
NOAA Fisheries
At-sea Observations
Rhinoceros auklet
Tufted Puffin GPS Tag
DietStorm Petrel
Colony Observations
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NOAA Fisheries
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
Frequency of occurrence of prey items in tufted puffin & rhi-noceros auklet diet samples (piscivores)
East Amatuli (tufted puf -fin)
St. Lazaria (rhinoceros auklet)
2011 Shore-based Seabird Diet
L. Slater (USFWS)
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NOAA Fisheries
2010 Pilot Survey
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NOAA Fisheries
Summer
Wyatt Fournier poster on larval & juv. Rockfish distribution and predation by adult salmon
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NOAA Fisheries
Fall
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NOAA Fisheries
Kalei Shotwell has a poster on benthic habitat research
• Hypothesis– Settlement to preferred habitat is one of the critical regulators of
early life survival throughout the offshore to nearshore gauntlet• Goal
– Characterize offshore to nearshore benthic habitat by region• Objectives
– Collect, clean, digitize, and grid available bathymetry, sediments, and habitat features
– Create base models of species specific preferred habitat and generate suitability maps for use in nearshore IBMs
Habitat Mapping
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NOAA Fisheries
Sediments & Features
Features Rock Islet Floating kelp Rocky outcrop
Sediments Rocky Gravel Sand Mud
Bathymetry
Meters 0 10 25 50 100
Norcross et al. 1997Preferred Habitat Age-0 Flathead sole: 80-120 m, mud, central areas
40m
Mean Low Low Water
Cross-sections
79,300 m2 87,600 m2
306,600 m2
Seafloor Measures Example Habitat Map
Kiliuda Bay Example
Courtesy of Mark Zimmermann, AFSC
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NOAA Fisheries
MTL Overview
• nearshore survey w/ acoustics• offshore acoustics (UTL platform)• diet analysis: stomachs, FA, SI• condition and energy content
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Kiliuda Bay
Izhut Bay
Barren Islands
Port Dick
Aialik Bay
Kenai Peninsula
Kodiak Island
NOAA Fisheries
MTL Nearshore Survey Sites
Whale Bay
St. Lazaria
Torch Bay/ Graves Harbor
Islas Bay
Salisbury Sound
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NOAA Fisheries
MTL PlatformsPics and detail on methods
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NOAA Fisheries
Nearshore Surveying, MTL-style
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NOAA Fisheries
MTL Purse Seine Catches
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NOAA Fisheries
LTL Overview
• Spring: LTL-only oceanography cruises• Summer/fall: UTL platform oceanography• Moorings• Drifters• Iron studies
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NOAA Fisheries
LTL Sampling Design
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NOAA Fisheries
LTL Sampling Design - Intensive
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NOAA Fisheries
LTL: Spring 2011 Surface Chlorophyll
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NOAA Fisheries
Multi Species Model
Indices of recruitment
Hydrography and ,zooplankton biomass
ROMS Physical Ocean Model GOA Grid 10km
Boundary and Initial Conditions
ROMS Physical Ocean Model GOA Grid 3km
Lower Trophic Level Modelnested GOA-NPZ
Hydrography
Effect of environmentally-caused variability in recruitment on ecosystems components and fishing
Vertically Linked ModelsAtmospheric forcing products
Indices of LTL variability
Initial Larval Distributions
Retrospective Recruitment correlations
Offline IBM Models
PollockSablefish
POP Pacific Cod
Arrowtooth
H3
H2
H1
UTL ComponentHypotheses
H3
H2
H1
ModelingComponentHypotheses
Regime analysis
Plankton biomass, Nutrients,Production
Larval horizontal
and vertical distribution
nursery areas, diet, abundance, production and consumption
Habitat maps
Forage fish diet, abundance, production and consumption
Decision of which runs
Indices of physical variability
MTLComponent
LTL Component
UTL Component
Distribution of juveniles
Plankton process rates
Oceanographic Data
EOF Analysis,Regional statistical indices
Regional statistical indices
Longitudinal + trajectory
analysis,Genetics Model
Distribution of competitors and juveniles
ROMS
NPZ IBM’s
Model
Multi Species Model
Indices of recruitment
Hydrography and ,zooplankton biomass
ROMS Physical Ocean Model GOA Grid 10km
Boundary and Initial Conditions
ROMS Physical Ocean Model GOA Grid 3km
Lower Trophic Level Modelnested GOA-NPZ
Hydrography
Effect of environmentally-caused variability in recruitment on ecosystems components and fishing
Vertically Linked ModelsAtmospheric forcing products
Indices of LTL variability
Initial Larval Distributions
Retrospective Recruitment correlations
Offline IBM Models
PollockSablefish
POP Pacific Cod
ATF
H3
H2
H1
UTL ComponentHypotheses
H3
H2
H1
ModelingComponentHypotheses
Regime analysis
Plankton biomass, Nutrients,Production
Larval horizontal
and vertical distribution
nursery areas, diet, abundance, production and consumption
Habitat maps
Forage fish diet, abundance, production and consumption
Decision of which runs
Indices of physical variability
MTLComponent
LTL Component
UTL Component
Distribution of juveniles
Plankton process rates
Oceanographic Data
EOF Analysis,Regional statistical indices
Regional statistical indices
Longitudinal + trajectory
analysis,Genetics Model
Distribution of competitors and juveniles
ROMS
NPZ IBM’s
Model Validation
Modeling Overview
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NOAA Fisheries
Multi Species Model
Indices of recruitment
Hydrography and ,zooplankton biomass
ROMS Physical Ocean Model GOA Grid 10km
Boundary and Initial Conditions
ROMS Physical Ocean Model GOA Grid 3km
Lower Trophic Level Modelnested GOA-NPZ
Hydrography
Effect of environmentally-caused variability in recruitment on ecosystems components and fishing
Vertically Linked ModelsAtmospheric forcing products
Indices of LTL variability
Initial Larval Distributions
Retrospective Recruitment correlations
Offline IBM Models
PollockSablefish
POP Pacific Cod
Arrowtooth
H3
H2
H1
UTL ComponentHypotheses
H3
H2
H1
ModelingComponentHypotheses
Regime analysis
Plankton biomass, Nutrients,Production
Larval horizontal
and vertical distribution
nursery areas, diet, abundance, production and consumption
Habitat maps
Forage fish diet, abundance, production and consumption
Decision of which runs
Indices of physical variability
MTLComponent
LTL Component
UTL Component
Distribution of juveniles
Plankton process rates
Oceanographic Data
EOF Analysis,Regional statistical indices
Regional statistical indices
Longitudinal + trajectory
analysis,Genetics Model
Distribution of competitors and juveniles
ROMS
NPZ IBM’s
Model
Multi Species Model
Indices of recruitment
Hydrography and ,zooplankton biomass
ROMS Physical Ocean Model GOA Grid 10km
Boundary and Initial Conditions
ROMS Physical Ocean Model GOA Grid 3km
Lower Trophic Level Modelnested GOA-NPZ
Hydrography
Effect of environmentally-caused variability in recruitment on ecosystems components and fishing
Vertically Linked ModelsAtmospheric forcing products
Indices of LTL variability
Initial Larval Distributions
Retrospective Recruitment correlations
Offline IBM Models
PollockSablefish
POP Pacific Cod
ATF
H3
H2
H1
UTL ComponentHypotheses
H3
H2
H1
ModelingComponentHypotheses
Regime analysis
Plankton biomass, Nutrients,Production
Larval horizontal
and vertical distribution
nursery areas, diet, abundance, production and consumption
Habitat maps
Forage fish diet, abundance, production and consumption
Decision of which runs
Indices of physical variability
MTLComponent
LTL Component
UTL Component
Distribution of juveniles
Plankton process rates
Oceanographic Data
EOF Analysis,Regional statistical indices
Regional statistical indices
Longitudinal + trajectory
analysis,Genetics Model
Distribution of competitors and juveniles
ROMS
NPZ IBM’s
Model Validation
Modeling Overview
Individual Based Fish Models
Physical Forcing & Lower Trophic
Level Models
Field Observations
Model Validation
Multi-Species Models
Hypothesis Testing
Environmental Effect on
Recruitment
Regime Analysis
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NOAA Fisheries
Modeling Results: Pattern Analysis
• purpose is to identify regimes for hindcasting
• main pattern seen relates to “Gyre Spinup”, and El Niño/PDO (strong/weak).
• seen especially in along shelf velocities, EKE, SSH and SST
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NOAA Fisheries
ADULT SPAWN
Example: Pacific Cod Conceptual Model
Spawn:Feb-July (t0)
JUVENILES
YOLK SACLARVAE
FEEDING LARVAE
MOVE INSHORE
Hatch: t0 + 21-26 days at 4˚C
Flexion:10-17 mm
Size at hatch:3-4 mm SL
EPI-PELAGIC JUVENILES
Transformation:25-35mm
t0 + 4 weeks
1st feedingf(???)
EGGS
Egg Development: f(time,temp,
depth,substrate)
YSL: Swim to surface, T=hatch+ 1
day
Diel Migration (after flexion)
July+
Larval Depth: shallower when cold.
= Indicates ‘switch’ to next ‘Stage’= Modeled ‘Stage’
f(time,temp)Hatch:
Nursery area
TIME
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NOAA Fisheries
Summary
• Comprehensive look at all trophic levels of the GOA ecosystem, from the shoreline out
to beyond the shelf break
• Focused on the environmental gauntlet that five major groundfish species must
navigate during early life
• Comparative approach: eastern vs. western GOA, seasonal and annual variability
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NOAA Fisheries