Biological invasion of a fishery by a space competitor: dynamic optimisation of the control program

Marjolaine Frésard () and Jean Boncoeur ()
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Marjolaine Frésard: 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
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

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Abstract: This paper deals with the control of an invasive species, void of market value, and acting as a space competitor for a native valuable harvested species. The paper presents a theoretical bioeconomic model describing the interacting dynamics of the two stocks. In the model, control variables are the levels of harvesting effort of each stock, and the target-function maximises the resource rent provided by harvesting the native stock, minus the cost of harvesting the invasive stock. Dynamic optimisation of the model displays the existence of a time-path leading to an optimal steady-state equilibrium where the invasive stock is kept under control, provided harvesting cost of this stock and time-discount rate are moderate, and the problem is addressed early enough.

Date: 2008-07-22
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Published in Achieving a Sustainable Future : Managing Aquaculture, Fishing, Trade and Development, Jul 2008, Nha Trang, Vietnam. pp.CD-ROM

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Persistent link: https://EconPapers.repec.org/RePEc:hal:journl:hal-00358235

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