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The roles of biological reference points and operational control points in management procedures for the sablefish (Anoplopoma fimbria) fishery in British Columbia, Canada

Published online by Cambridge University Press:  26 September 2013

SEAN P. COX ,
ALLEN R. KRONLUND  and
ASHLEEN J. BENSON
SEAN P. COX*
Affiliation:
School of Resource and Environmental Management, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia, V5A 1S6Canada
ALLEN R. KRONLUND
Affiliation:
Pacific Biological Station, Fisheries and Oceans Canada, 3190 Hammond Bay Road, Nanaimo, British Columbia, V9R 6N7Canada
ASHLEEN J. BENSON
Affiliation:
School of Resource and Environmental Management, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia, V5A 1S6Canada
*
*Correspondence: Dr Sean Cox Tel: +1 778 7825778 e-mail: [email protected]
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Summary

Biological reference points (BRPs) in fisheries policy are typically sensitive to stock assessment model assumptions, thus increasing uncertainty in harvest decision-making and potentially blocking adoption of precautionary harvest policies. A collaborative management strategy evaluation approach and closed-loop simulation modelling was used to evaluate expected fishery economic and conservation performance of the sablefish (Anoplopoma fimbria) fishery in British Columbia (Canada), in the presence of uncertainty about BRPs. Comparison of models derived using two precautionary harvest control rules, which each complied with biological conservation objectives and short-term economic objectives given by industry, suggested that both rules were likely to avert biomass decline below limit BRPs, even when stock biomass and production were persistently overestimated by stock assessment models. The slightly less conservative, industry-preferred harvest control rule also avoided short-term economic losses of c. CAN$ 2.7–10 million annually, or 10–50% of current landed value. Distinguishing between the role of BRPs in setting fishery conservation objectives and operational control points that define harvest control rules improved the flexibility of the sablefish management system, and has led to adoption of precautionary management procedures.

Keywords

biological reference pointsclosed-loop simulationfish stock assessmentfisheries managementmanagement strategy evaluationoperational control pointsstructural model uncertainty
Type
THEMATIC SECTION: Politics, Science and Policy of Reference Points for Resource Management
Information
Environmental Conservation , Volume 40 , Issue 4 , December 2013 , pp. 318 - 328
Copyright
Copyright © Foundation for Environmental Conservation 2013 

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