Status and Solutions for the World's Unassessed Fisheries
Status and Solutions for the World's Unassessed Fisheries
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DOI：
10.1126/science.1223389
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发表时间：
2012-10-26
期刊：
影响因子：
56.9
通讯作者：
Lester, Sarah E.
中科院分区：
文献类型：
--
作者：
Costello, Christopher;Ovando, Daniel;Lester, Sarah E.
最近的报告表明，发达国家许多评估良好的渔业正在走向可持续发展。我们研究了同样的结论是否适用于缺乏正式评估的渔业，这些渔业占全球渔获量的80%以上。我们开发了一种方法，使用物种的生活史，渔获量和渔业发展数据来估计全球数千个未经评估的渔业状况。我们发现，小型未评估渔业的状况比评估渔业差得多，但大型未评估渔业的表现可能与评估渔业几乎一样好。然而，小型和大型种群都在继续下降; 64%的未经评估的种群如果重建，可以提供更多的可持续收获。我们的研究结果表明，全球渔业恢复将同时增加丰度（56%）和渔业产量（8%至40%）。
Recent reports suggest that many well-assessed fisheries in developed countries are moving toward sustainability. We examined whether the same conclusion holds for fisheries lacking formal assessment, which comprise >80% of global catch. We developed a method using species' life-history, catch, and fishery development data to estimate the status of thousands of unassessed fisheries worldwide. We found that small unassessed fisheries are in substantially worse condition than assessed fisheries, but that large unassessed fisheries may be performing nearly as well as their assessed counterparts. Both small and large stocks, however, continue to decline; 64% of unassessed stocks could provide increased sustainable harvest if rebuilt. Our results suggest that global fishery recovery would simultaneously create increases in abundance (56%) and fishery yields (8 to 40%).