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

Author

Listed:
  • 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)

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.

Suggested Citation

  • Marjolaine Frésard & Jean Boncoeur, 2008. "Biological invasion of a fishery by a space competitor: dynamic optimisation of the control program," Post-Print hal-00358235, HAL.
    • Handle: RePEc:hal:journl:hal-00358235
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