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Are Marine Reserves and Harvest Control Rules Substitutes or Complements for Rebuilding Fisheries? Public Deposited

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  • The depletion of important fish stocks and the degradation of marine ecosystems are common problems worldwide. Two approaches that have been widely used to restore depleted fish stocks are the implementation of harvest control rules and the establishment of marine reserve networks. Harvest control rules, underpinned by the monitoring and assessment of the status of target stocks, provide a scientific basis for setting catch limits. No-take marine reserves have been increasingly promoted in many countries to restore depleted fish stocks as well as to enhance the sustainability of fisheries. Extensive bodies of literature exist that examine the merits and limitations of alternative harvest control rules and the effectiveness of marine reserve establishment. To our knowledge, however, this study is the first to investigate the connection between the two management approaches for rebuilding depleted fish stocks and fisheries. In this paper, we construct a bioeconomic model to examine the effectiveness of a no-take reserve under different stock rebuilding harvest strategies. Our parameterized model shows that the fishery will perform better in terms of both the average biomass and net present value of the fishery when the no-take reserve is established under a fast stock rebuilding harvest strategy. Importantly, however, the relative gains from establishing a no-take reserve are greater, in terms of conservation and economic objectives, when the reserve is established in conjunction with a harvest strategy that rebuild the stock slowly.
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  • Yamazaki, S. et al. Are Marine Reserves and Harvest Control Rules Substitutes or Complements for Rebuilding Fisheries? In: Visible Possibilities: The Economics of Sustainable Fisheries, Aquaculture and Seafood Trade: Proceedings of the Sixteenth Biennial Conference of the International Institute of Fisheries Economics and Trade, July 16-20, Dar es Salaam, Tanzania. Edited by Ann L. Shriver. International Institute of Fisheries Economics and Trade (IIFET), Corvallis, 2012.
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  • AQUAFISH, USAID, NEPAD Planning and Coordination Agency, Norad, The World Bank, Hyatt Regency Dar es Salaam, NAAFE, World Wildlife Fund, United Nations University Fisheries Training Programme, ICEIDA, JICA, JIFRS, The European Association of Fisheries Economists, International Seafood Sustainability Foundation
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