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On the Joint Management of Catch and Bycatch and the Use of Marine Reserves

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  • This paper explores the possibility of using marine reserves to protect stocks subject to bycatch problems. The importance of migration rates and growth rates of both target and bycatch species and costs are analyzed. Pure open access equilibrium harvest of target species and stock level of bycatch species are compared to those generated by a reserve and open access in the harvest zone. Win-win situations, situations where both harvest of target species and stock size of bycatch species increase, are searched for. It is shown that using a reserve to protect a slow moving bycatch species is more likely to be a success than in the case of a fast moving bycatch species. Furthermore, a fast moving species is worse off after the introduction of a reserve if it has an intrinsic growth rate that is lower than the target species, and in some cases a reserve may actually drive the bycatch stock to extinction. No win-win situations are found in the case of a fast moving species. In the case of a slow moving bycatch species a reserve increases stock size and in cases with low unit cost of effort win-win situations are identified.
  • The National Oceanic & Atmospheric Administration Marine Fisheries Service, United States Department of Commerce (NOAA Fisheries); United Kingdom Department for Environment, Food and Rural Affairs (DEFRA); The United States Agency for International Development supported Aquaculture Collaborative Research and Support Program (ACRSP).
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  • Reithe, Siv. 2006. On the Joint Management of Catch and Bycatch and the Use of Marine Reserves. In: Proceedings of the Thirteenth Biennial Conference of the International Institute of Fisheries Economics & Trade, July 11-14, 2006, Portsmouth, UK: Rebuilding Fisheries in an Uncertain Environment. Compiled by Ann L. Shriver. International Institute of Fisheries Economics & Trade, Corvallis, Oregon, USA, 2006. CD ROM. ISBN 0-9763432-3-1
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