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

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  • 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.
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  • Fresard, Marjolaine and Jean Boncoeur. 2008. Biological invasion of a fishery by a space competitor: dynamic optimisation of the control program. In: Proceedings of the Fourteenth Biennial Conference of the International Institute of Fisheries Economics & Trade, July 22-25, 2008, Nha Trang, Vietnam: Achieving a Sustainable Future: Managing Aquaculture, Fishing, Trade and Development. Compiled by Ann L. Shriver. International Institute of Fisheries Economics & Trade, Corvallis, Oregon, USA, 2008.
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  • US National Oceanic and Atmospheric Administration (NOAA) Fisheries Division, The Department of Fisheries and Oceans, Canada; Aquaculture CRSP and AquaFish CRSP; Minh Phu Seafood Corporation; Vietnam Datacommunication Company (VDC); Camau Frozen Seafood Processing Import Export Corporation (Camimex); Long Sinh Limited Company; Mai Linh Group and Nam Viet Corporation.
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