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| Martinet, Vincent; Thebaud, Olivier; Doyen, L. |
| This paper develops a formal analysis of the recovery process for a fishery, from crisis situations to desired levels of sustainable exploitation, using the theoretical framework of viable control. We define sustainability as a combination of biological, economic and social constraints which need to be met for a viable fishery to exist. Biological constraints are based on the definition of a minimum resource stock to be preserved. Economic constraints relate to the existence of a guaranteed profit per vessel. Social constraints refer to the maintenance of a minimum size of the fleet, and to the maximum speed at which fleet adjustment can take place. Using fleet size adjustment and fishing effort per vessel as control variables, we first identify the states... |
| Tipo: Text |
Palavras-chave: Bio economic modeling; Fishery policies; Recovery; Sustainable fishing. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-3719.pdf |
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| Martinet, Vincent; Blanchard, Fabian. |
| Sustainable management of natural resources, and in particular fisheries, must take into account several conflicting objectives. This is the case in the French Guiana shrimp fishery for which profitability objectives imply a reduction in the fishing activity. On the one hand, this fishery has negative externalities on marine biodiversity due to discards. On the other hand, this fishery has positive externalities on the economy of the local community and interestingly enough on a protected seabird species in the area (the Frigatebird that feeds on discards). In this paper, we examine the viability of that system considering two sustainability objectives: an economic objective in terms of the profitability of the fishing activity, and a conservation... |
| Tipo: Text |
Palavras-chave: Bio-economic modeling; Viability; Sustainability; Fishery externalities; Species conservation. |
| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/00020/13135/10195.pdf |
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