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Toward a New Paradigm of the Fisheries Management

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  • Fisheries management has been carried out on the assumption that a fish population is in equilibrium with the fishing effort under the average environmental conditions and hence there must be a maximum sustainable yield (MSY). However, since the simultaneous rise and fall of the interdecadal and global scale of sardine populations was pointed out in the early 1980s, many other similar events of long-term changes in marine populations have been emerging, which is called regime shift. On the other hand, abundant evidence for the regime shift of climate-ocean systems has been obtained recently, which is suggested as the driving force causing the fluctuations in marine organisms. Very recently, it has become clear that even groundfish and tunas often show a tremendous increase in spite of the strong exploitation. These facts strongly show that there are no steady conditions in the oceans and the MSY is nothing but an imaginary criterion. A new paradigm of the fisheries management must be sought on the basis of the regime shift theory.
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  • Kawasaki, Tsuyoshi. 2002. Toward a New Paradigm of the Fisheries Management. In: Proceedings of the Eleventh Biennial Conference of the International Institute of Fisheries Economics and Trade, August 19-22, 2002, Wellington, New Zealand: Fisheries in the Global Economy. Compiled by Ann L. Shriver. International Institute of Fisheries Economics & Trade, Corvallis, Oregon, USA, 2002. CD ROM.
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Declaración de derechos
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