an overview of calobster (california lobster collaborative) matt kay – uc santa barbara
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An overview of CALobster(California Lobster Collaborative)
Matt Kay – UC Santa Barbara
What is CALobster?
A regional partnership among Santa Barbara area lobstermen, academic marine scientists, policy analysts and economists, state and federal management agencies and non-profit organizations.
• Develop co-management structure and governance • Advance fishery science through collaboration
• Improve fishery management through EBFM
• Assess MPA performance and use as research tools (e.g. stock assessment)
• Develop socioeconomic understanding and explore market strategies
• Develop decision models for management that utilize empirical data and encourage learning
•…and…INTEGRATE!
CALobster Goals and Objectives
Fisheries Research
Lenihan & KayEcology, EFI &
monitoring
Chris MillerFishery leader
Chris CostelloEconomic modeling
Carla GuentherMPA economics Donna Schroeder
Coll. Fish. Coordinator
Oran Young
Gail Osherenko
Rod Fujita (ED)
Economics Governance
CALobster
Heather ColemanAdaptive learning model
Management (DFG)Kristine BarskyJohn Ugoretz
Hilborn LabStock
assessment
Fisheries research plan
• Port sampling of commercial catch
• Trap based tagging studies
Port sampling regions during 2004-05 and 2005-06 lobster seasons.
Pe
rce
nt
of
ind
ivid
ua
ls i
n e
ac
h s
ize
cla
ss
0
5
10
15Males Females
Valley to Gull
0
5
10
15Gull to West End
0
5
10
15 West End to Fry's
0
5
10
15Fry's to Pedro Point
Carapace Length (mm)
80 90 100 110 120 130 140 1500
5
10
15Pedro Point to Valley
n = 208
n = 218
n = 109
n = 220
n = 188
Lobsters trapped within geographical areas along Santa Cruz Islandduring the 2004-2005 season
Trap based tagging studies
• Population size structure inside vs. outside
• Movement, habitat associations (mapping, SCUBA)
• Growth rates
• Age structure of fished vs. non-fished (MPA as tool here - natural vs. fishing mortality estimates for stock assessment models)
What can we learn?
Port sampling
• Monitoring of fishery over space and time
• Habitat associations (seafloor mapping, at sea sampling, SCUBA)
• Port sampling of commercial catch
• Trap-based tagging studies
Fisheries research plan
Trap based tagging studies
Trap based tagging studies
• Population size structure inside vs. outside (compare to port sampling for outside sites)
• Movement (including spillover), habitat associations (mapping, SCUBA)
• Growth rates
• Age structure of fished vs. non-fished areas (MPA’s as tools - natural vs. fishing mortality estimates for stock assessment models)
What can we learn?
Port sampling
• Monitoring of fishery over space and time
• Habitat associations (seafloor mapping, at sea sampling, SCUBA)
Fisheries Research
Lenihan & KayEcology, EFI &
monitoring
Chris MillerFishery leader
Chris CostelloEconomic modeling
Carla GuentherMPA economics Donna Schroeder
Coll. Fish. Coordinator
Oran Young
Gail Osherenko
Rod Fujita (ED)
Economics Governance
CALobster
Heather ColemanAdaptive learning model
Management (DFG)Kristine BarskyJohn Ugoretz
Hilborn LabStock
assessment
Carla’s Questions and Research Plan
Logbook Landmark Database
Landings Receipts
Query Results
FishermenInterviews
Causal Chains of observed impacts
1
23
4
5
GIS
6
Economic Data5
5
Physical Data
Report to DFG,CLTFA, CINMSand UCSB
• How have spatial closures affected commercial trappers’ earnings and CPUE in the Northern Channel Islands?
• How has the Santa Barbara Bight commercial lobster fishery adapted to the marine reserve network restrictions?
• What is the net socio-economic effect of the reserves on the lobster fishery?