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Optimal Dynamic Enforcement of A Fishery

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  • It has been established that the path of a fishery over time, i.e. stocks, fleets, effort and profits, depends inter alia on the enforcement of the fisheries management rules in place. It has further been established that optimal enforcement of fisheries management rules depends inter alia on the shadow value of biomass at each point of time. This raises the question of the optimal path of fisheries enforcement over time. Given a certain state of the fishery, a fisheries management system, enforcement tools and a penalty structure, what would be the optimal enforcement effort over time? This paper deals with this issue. Given the above constraints, it attempts to solve the dynamic problem of optimal enforcement of the fisheries rules over time. Not surprisingly, it turns out that the optimal enforcement effort should definitely not be constant. On the contrary, given the other parameters of the problem, optimal enforcement is generally a function of the state of the fish stocks at each point of time. In fact, it appears that the optimal enforcement effort should be a monotonically declining function of the fish stocks (provided a sustainable fishery is optimal). A related issue is the target harvest that may be set under the fisheries management system. The optimal path of this over time and its interaction with optimal enforcement is also explored.
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  • Arnason, Ragnar. 2010. Optimal Dynamic Enforcement of A Fishery. 9 pages. In: Proceedings of the Fifteenth Biennial Conference of the International Institute of Fisheries Economics & Trade, July 13-16, 2010, Montpellier, France: Economics of Fish Resources and Aquatic Ecosystems: Balancing Uses, Balancing Costs. Compiled by Ann L. Shriver. International Institute of Fisheries Economics & Trade, Corvallis, Oregon, USA, 2010.
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  • US National Oceanic and Atmospheric Administration (NOAA) Fisheries Division, Agence Française de Développement, Ministère de l’Enseignement Supérieur et de la Recherche, Ministère de L’Alimentation de L’Agriculture et de la Pêche, Ministère de l’Énergie, du Développement Durable et de la Mer, La Région Languedoc Rouslilon, Département Hérault, Montpellier Agglomèration, The Department of Fisheries and Oceans, Canada, and AquaFish Collaborative Research Support Program (CRSP).
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