Sustainable yield analysis in a multicohort single-species fishery: A mathematical programming approach

Sustainable yield analysis in a multicohort single-species fishery: A mathematical programming approach

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Article ID: iaor19961245
Country: United Kingdom
Volume: 46
Issue: 9
Start Page Number: 1052
End Page Number: 1062
Publication Date: Sep 1995
Journal: Journal of the Operational Research Society
Authors:
Keywords: programming: integer
Abstract:

The concept of sustainable yield, i.e. the fish catch that can be maintained in the long run from a fishery in a steady state, is widely used in fisheries management. In traditional methods of sustainable yield analysis, based on the Schaefer model of a fish stock, the age structure of the stock is ignored. Approaches based on the Beverton-Holt multicohort fish population model take account of age structure but assume that instantaneous natural and fishing mortality rates are constant throughout the year. Using a fish population model in which this assumption is not required, a mixed integer programming model is developed for the analysis of a multicohort single-species fishery in a steady state. This new method of sustainable yield analysis is demonstrated using data for the western mackerel fishery. Comparisons with results from other studies of this fishery are presented.

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