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Incentives for optimal management of age-structured fish populations

Martin Quaas, Till Requate (), Kirsten Ruckes, Anders Skonhoft (), Niels Vestergaard () and Rudi Voss

Resource and Energy Economics, 2013, vol. 35, issue 2, 113-134

Abstract: We characterize optimal fishery management in an age-structured, bio-economic model where two age groups are harvested with costly and imperfect selectivity. We show that a system of tradable fishing permits, each allowing to harvest a specific number of fish that differs with age group, implements optimal age-structured harvesting, while traditional biomass quotas fail to solve the problem of growth overfishing. With our system, gear restrictions (such as mesh-size prescriptions) become obsolete. We apply our model to the Eastern Baltic cod fishery and quantify the benefits of optimal age-structured management.

Keywords: Fishery management; Growth overfishing; Recruitment overfishing; Optimal harvesting; Age-structured model (search for similar items in EconPapers)
JEL-codes: Q22 Q57 Q28 (search for similar items in EconPapers)
Date: 2013
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DOI: 10.1016/j.reseneeco.2012.12.004

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