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Determining Optimal Catch in Age-Structural Multispecies Fisheries

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Abstract
  • This study investigates optimal catch of Barents Sea stocks, namely Northeast Arctic Cod and Capelin in multispecies ecosystem. We solve a multispecies age structured bioeconomic model for predator-prey interaction. Barents Sea stock data from ICES are employed for model application. Among others, we also include sustainability constraint in the model that contributes towards ecosystem based management of fishery. Our preliminary result suggests that a conservative harvest is optimal for capelin compared to the single species model and a higher harvest is possible in cod in multispecies model. Furthermore, we found that a pulse fishing yields higher value in cod (predator) compared to the uniform (current) fishing policy.
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  • Poudel, Diwakar and Stein Ivar Steinshamn. 2015. Determining Optimal Catch in Age-Structural Multispecies Fisheries. In: Proceedings of the Eighth Biennial Forum of the North American Association of Fisheries Economists, May 20-22, 2015, Ketchikan, Alaska: Economic Sustainability, Fishing Communities and Working Waterfronts. Compiled by Ann L. Shriver and Melissa Errend. North American Association of Fisheries Economists, Corvallis, Oregon, USA, 2015.
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  • Alaska Sea Grant, North Pacific Fishery Management Council, North Pacific Research Board, Northern Economics, Pollock Conservation Cooperative Research Center, Rasmuson Foundation, University of Alaska Fairbanks, School of Fisheries and Ocean Sciences, University of Alaska Southeast, Ketchikan
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