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Global hot spots of transshipment of fish catch at sea

机译：鱼的全球转运热点在海上捕获

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A major challenge in global fisheries is posed by transshipment of catch at sea from fishing vessels to refrigerated cargo vessels, which can obscure the origin of the catch and mask illicit practices. Transshipment remains poorly quantified at a global scale, as much of it is thought to occur outside of national waters. We used Automatic Identification System (AIS) vessel tracking data to quantify spatial patterns of transshipment for major fisheries and gear types. From 2012 to 2017, we observed 10,510 likely transshipment events, with trawlers (53%) and longliners (21%) involved in a majority of cases. Trawlers tended to transship in national waters, whereas longliners did so predominantly on the high seas. Spatial hot spots were seen off the coasts of Russia and West Africa, in the South Indian Ocean, and in the equatorial Pacific Ocean. Our study highlights novel ways to trace seafood supply chains and identifies priority areas for improved trade regulation and fisheries management at the global scale.
机译：全球捕捞面临的主要挑战是海上捕捞物从渔船向冷藏货船的转运，这会掩盖捕捞物的来源并掩盖非法行为。在全球范围内，对转运的量化仍然很差，因为许多转运都发生在国家水域以外。我们使用自动识别系统（AIS）船只跟踪数据来量化主要渔业和渔具类型的转运空间格局。从2012年到2017年，我们观察到了10,510起可能的转运事件，在大多数情况下涉及拖网渔船（53％）和延绳钓（21％）。拖网渔船倾向于在国家水域转运，而延绳钓则主要在公海进行转运。在俄罗斯和西非沿海，南印度洋和赤道太平洋中都看到了空间热点。我们的研究重点介绍了追踪海鲜供应链的新颖方法，并确定了在全球范围内改善贸易法规和渔业管理的优先领域。

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