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Implementation of alternative CPUE/abundance dynamics for purse seine fi sheries within MULTIFAN-CL with application to effort-based projections for skipjack tuna

Citation

Scott, R and Tidd, A and Davies, N and Pilling, GM and Harley, SJ, Implementation of alternative CPUE/abundance dynamics for purse seine fi sheries within MULTIFAN-CL with application to effort-based projections for skipjack tuna, Western and Central Pacific Fisheries Commission 11th Regular Session Summary Report, 05-13 August 2015, Pohnpei, Micronesia, pp. 1-10. (2015) [Non Refereed Conference Paper]


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Abstract

A common assumption in most stock assessment models is that catch per unit of effort (CPUE) scales in strict proportion to stock abundance. However, for purse seine fi sheries in particular, this assumption may not hold. As a stock is depleted, catches can remain high as abundance decreases. This is known as hyperstability in CPUE and can impact the conclusions of analyses undertaken to inform management decisions.

Item Details

Item Type:Non Refereed Conference Paper
Keywords:CPUE/abundance dynamics, purse seine fisheries, skipjack tuna
Research Division:Agricultural and Veterinary Sciences
Research Group:Fisheries Sciences
Research Field:Fisheries Management
Objective Division:Environment
Objective Group:Ecosystem Assessment and Management
Objective Field:Ecosystem Assessment and Management of Marine Environments
Author:Tidd, A (Dr Alexander Tidd)
ID Code:116272
Year Published:2015
Deposited By:Centre for Fisheries and Aquaculture
Deposited On:2017-05-04
Last Modified:2017-05-04
Downloads:0

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