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Estimation of catch losses resulting from overexploitation in the global marine fisheries

Acta Oceanologica Sinica 2017年第12期36卷 37-44页

作者： DING Qi CHEN Xinjun CHEN Yong TIAN Siquan College of Marine Sciences Shanghai Ocean UniversityShanghai 201306China Key Laboratory of Sustainable exploitation of Oceanic Fisheries Resources of Ministry of Education Shanghai Ocean UniversityShanghai 201306China National Engineering Research Center for Oceanic Fisheries Shanghai Ocean UniversityShanghai 201306China Collaborative Innovation Center for Distant-water Fisheries Shanghai 201306China School of Marine Sciences University of MaineOronoMaine 04469USA

Many fish stocks in the world are depleted as a result of overexploitation, which reduces stock productivity and results in loss of potential yields. In this study we analyzed the catch trends and approximate thresholds of sustainable fishing for fished stocks to estimate the potential loss of catch and revenue of global fisheries as a result of overexploitation during the period of 1950–2010 in 14 FAO fishing areas. About 35% of stocks in the global marine ocean have or had suffered from overexploitation at present. The global catch losses amounted to 332.8 million tonnes over 1950–2010, resulting in a direct economic loss of US$298.9 billion（constant 2005 US$）.Unsustainable fishing caused substantial potential losses worldwide, especially in the northern *** potential losses due to overfishing for different groups of resources showed that the low-value but abundant small-medium pelagics made the largest contribution to the global catch loss, with a weight of 265.0 million tonnes. The geographic expansion of overfishing not only showed serial depletion of world＇s fishery resources, but also reflected how recent trends towards sustainability can stabilize or reverse catch *** of global fishing capacity and changes in fishery management systems are necessary if the long-term sustainability of marine fisheries in the world is to be achieved.

关键词： overfishing catch loss sustainability exploitation status

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