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Optimal selectivity and effort cost: A simple bioeconomic model with an application to the Bay of Biscay Nephrops fishery

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  • Claire Macher

    (AMURE - Aménagement des Usages des Ressources et des Espaces marins et littoraux - Centre de droit et d'économie de la mer - IFREMER - Institut Français de Recherche pour l'Exploitation de la Mer - UBO - Université de Brest - IUEM - Institut Universitaire Européen de la Mer - IRD - Institut de Recherche pour le Développement - INSU - CNRS - Institut national des sciences de l'Univers - UBO - Université de Brest - CNRS - Centre National de la Recherche Scientifique - CNRS - Centre National de la Recherche Scientifique, EM - Unité d'Economie Maritime - IFREMER - Institut Français de Recherche pour l'Exploitation de la Mer)

  • Jean Boncoeur

    (AMURE - Aménagement des Usages des Ressources et des Espaces marins et littoraux - Centre de droit et d'économie de la mer - IFREMER - Institut Français de Recherche pour l'Exploitation de la Mer - UBO - Université de Brest - IUEM - Institut Universitaire Européen de la Mer - IRD - Institut de Recherche pour le Développement - INSU - CNRS - Institut national des sciences de l'Univers - UBO - Université de Brest - CNRS - Centre National de la Recherche Scientifique - CNRS - Centre National de la Recherche Scientifique)

Abstract

This article investigates the relationship between optimal gear selectivity and effort cost in the fishing industry We first show that optimal selectivity depends negatively on the level of effort cost, but that this relationship is not continuous. Optimal selectivity switches when real effort cost goes beyond a certain level, and this switch induces a non-marginal reduction in the level of fishing effort. In the second part of this article, we shoot, that the current level of real effort cost in the Nephrops fishery of the Bay of Biscay is far below the switch point, which makes high selectivity optimal. The discrepancy between optimal and current selectivity may be explained by the state of the fishery management and also by the fact that selectivity is hardly observable with the type of gear presently used.

Suggested Citation

  • Claire Macher & Jean Boncoeur, 2010. "Optimal selectivity and effort cost: A simple bioeconomic model with an application to the Bay of Biscay Nephrops fishery," Post-Print hal-00511667, HAL.
    • Handle: RePEc:hal:journl:hal-00511667
    Note: View the original document on HAL open archive server: https://hal.science/hal-00511667
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    References listed on IDEAS

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    1. Sean Pascoe & Andy Revill, 2004. "Costs and Benefits of Bycatch Reduction Devices in European Brown Shrimp Trawl Fisheries," Environmental & Resource Economics, Springer;European Association of Environmental and Resource Economists, vol. 27(1), pages 43-64, January.
    2. Claire Macher & Olivier Guyader & Catherine Talidec & M. Bertignac, 2008. "A cost–benefit analysis of improving trawl selectivity in the case of discards: The Nephrops norvegicus fishery in the Bay of Biscay," Post-Print hal-00359860, HAL.
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    Cited by:

    1. Guillen, Jordi & Macher, Claire & Merzéréaud, Mathieu & Fifas, Spyros & Guyader, Olivier, 2014. "The effect of discards and survival rate on the Maximum Sustainable Yield estimation based on landings or catches maximisation: Application to the nephrops fishery in the Bay of Biscay," Marine Policy, Elsevier, vol. 50(PA), pages 207-214.
    2. Péreau, J.-C. & Doyen, L. & Little, L.R. & Thébaud, O., 2012. "The triple bottom line: Meeting ecological, economic and social goals with individual transferable quotas," Journal of Environmental Economics and Management, Elsevier, vol. 63(3), pages 419-434.
    3. Adrien Lagarde & Abdoul Ahad-Cissé & Sophie Gourguet & Olivier Le Pape & Olivier Thébaud & Nathalie Caill-Milly & Gilles Morandeau & Claire Macher & Luc Doyen, 2017. "How MMEY mitigates bio-economic impacts of climate change on mixed fisheries," Cahiers du GREThA (2007-2019) 2017-22, Groupe de Recherche en Economie Théorique et Appliquée (GREThA).
    4. repec:grm:ecoyun:201712 is not listed on IDEAS

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