Unsustainability and Overexploitation in Fisheries
نویسندگان
چکیده
منابع مشابه
Current and Future Sustainability of Island Coral Reef Fisheries
Overexploitation is one of the principal threats to coral reef diversity, structure, function, and resilience [1, 2]. Although it is generally held that coral reef fisheries are unsustainable [3-5], little is known of the overall scale of exploitation or which reefs are overfished [6]. Here, on the basis of ecological footprints and a review of exploitation status [7, 8], we report widespread u...
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About 25% of the world's fisheries are depleted such that their current biomass is lower than the level that would maximize the sustained yield (MSY). By using methods not previously applied in the fisheries conservation context, we show in four disparate fisheries (including the long-lived and slow-growing orange roughy) that the dynamic maximum economic yield (MEY), the biomass that produces ...
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The status of the Mediterranean and Black Sea fisheries was evaluated for the period 1970-2010 on a subarea basis, using various indicators including the temporal variability of total landings, the number of recorded stocks, the mean trophic level of the catch, the fishing-in-balance index and the catch-based method of stock classification. All indicators confirmed that the fisheries resources ...
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Ecological economics studies the interactions and coevolution in time and space between ecosystems and human economies. The rate at which humans exploit or harvest ecosystems services exceeds what might be regarded as a desirable level from society’s point of view. The consequences of this overexploitation are well known (e.g., climate change, biodiversity loss and extinction of species, collap...
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The fisheries crisis of the last decades and the overexploitation of a great number of stocks have revealed that the scientific knowledge available about the dynamics of the marine ecosystems and needed for the management of the fisheries is inadequate. This problem is critical when the management of coastal ecosystems and artisanal fisheries is involved. These systems show a great complexity d...
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