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?