Environmental Studies Department, University of California, Santa Cruz, Santa Cruz, CA, USA.
Global Fishing Watch, Washington, DC, USA.
Sci Adv. 2023 Mar 10;9(10):eadd8125. doi: 10.1126/sciadv.add8125.
While most research has focused on the legality of global industrial fishing, unregulated fishing has largely escaped scrutiny. Here, we evaluate the unregulated nature of global squid fisheries using AIS data and nighttime imagery of the globalized fleet of light-luring squid vessels. We find that this fishery is extensive, fishing 149,000 to 251,000 vessel days annually, and that effort increased 68% over the study period 2017-2020. Most vessels are highly mobile and fish in multiple regions, largely (86%) in unregulated areas. While scientists and policymakers express concerns over the declining abundance of squid stocks globally and regionally, we find a net increase in vessels fishing squid globally and spatial expansion of effort to novel areas. Since fishing effort is static in areas with increasing management, and rising in unmanaged areas, we suggest actors may take advantage of fragmented regulations to maximize resource extraction. Our findings highlight a profitable, but largely unregulated fishery, with strong potential for improved management.
虽然大多数研究都集中在全球工业捕鱼的合法性上，但对不受监管的捕鱼活动却基本上没有进行审查。在这里，我们利用 AIS 数据和夜间灯光诱捕鱿鱼船队的全球图像来评估全球鱿鱼渔业的无管制性质。我们发现，该渔业规模庞大，每年捕捞 149,000 至 251,000 个船日，而在 2017 年至 2020 年的研究期间，捕捞量增加了 68%。大多数船只高度机动，在多个地区捕鱼，其中大部分（86%）在不受监管的地区。尽管科学家和政策制定者对全球和区域鱿鱼资源减少表示担忧，但我们发现全球捕捞鱿鱼的船只数量呈净增长，而且捕捞活动扩展到了新的区域。由于管理加强的地区捕捞努力保持不变，而不受管理的地区则在增加，因此我们认为，参与者可能会利用分散的法规来最大限度地提取资源。我们的研究结果突显了一个有利可图但基本上不受监管的渔业，具有加强管理的巨大潜力。
