Collapse and conservation of shark populations in the Northwest Atlantic
Collapse and conservation of shark populations in the Northwest Atlantic
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DOI：
10.1126/science.1079777
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发表时间：
2003-01-17
期刊：
影响因子：
56.9
通讯作者：
Doherty, PA
中科院分区：
文献类型：
--
作者：
Baum, JK;Myers, RA;Doherty, PA
过度开发威胁着许多大型脊椎动物的未来。在海洋中，由于这种巨大的压力，金枪鱼和海龟目前受到保护关注。相比之下，大多数鲨鱼物种的状况仍然不确定。使用西北大西洋最大的数据集，我们显示了大型沿海和海洋鲨鱼数量的快速大幅下降。据估计，在过去的15年里，双髻鲨、白鲨和长尾鲨的数量都减少了75%以上。封闭区域模型强调了鲨鱼保护的优先区域，如果海洋保护区要使多种受威胁物种受益，则需要考虑重新分配和选址。
Overexploitation threatens the future of many large vertebrates. In the ocean, tunas and sea turtles are current conservation concerns because of this intense pressure. The status of most shark species, in contrast, remains uncertain. Using the largest data set in the Northwest Atlantic, we show rapid large declines in large coastal and oceanic shark populations. Scalloped hammerhead, white, and thresher sharks are each estimated to have declined by over 75% in the past 15 years. Closed-area models highlight priority areas for shark conservation, and the need to consider effort reallocation and site selection if marine reserves are to benefit multiple threatened species.