Tracking the global footprint of fisheries
Tracking the global footprint of fisheries
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DOI：
10.1126/science.aao5646
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发表时间：
2018-02-23
期刊：
影响因子：
56.9
通讯作者：
Worm, Boris
中科院分区：
文献类型：
--
作者：
Kroodsma, David A.;Mayorga, Juan;Worm, Boris
尽管捕鱼是人类收获自然资源最广泛的活动之一，但人们对其全球足迹知之甚少，而且从未直接量化。从2012年到2016年，我们处理了220亿条自动识别系统消息，跟踪了7万艘工业渔船，创建了全球动态捕捞足迹，其空间和时间分辨率比之前的数据集高出两到三个数量级。我们的数据显示，工业捕鱼发生在55%的海洋面积上，其空间范围是农业的四倍多。我们发现，全球渔业模式对短期经济和环境变化的敏感度低得令人惊讶，对节假日和休渔等文化和政治事件的敏感度很高。
Although fishing is one of the most widespread activities by which humans harvest natural resources, its global footprint is poorly understood and has never been directly quantified. We processed 22 billion automatic identification system messages and tracked >70,000 industrial fishing vessels from 2012 to 2016, creating a global dynamic footprint of fishing effort with spatial and temporal resolution two to three orders of magnitude higher than for previous data sets. Our data show that industrial fishing occurs in >55% of ocean area and has a spatial extent more than four times that of agriculture. We find that global patterns of fishing have surprisingly low sensitivity to short-term economic and environmental variation and a strong response to cultural and political events such as holidays and closures.