Straddling the line: high potential impact on vulnerable marine ecosystems by bottom-set longline fishing in unregulated areas beyond national jurisdiction
Straddling the line: high potential impact on vulnerable marine ecosystems by bottom-set longline fishing in unregulated areas beyond national jurisdiction
复制标题
跨越界限：在国家管辖范围以外不受管制的地区进行底层延绳钓捕捞对脆弱海洋生态系统具有巨大的潜在影响
DOI：
10.1093/icesjms/fsaa106
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发表时间：
2020
影响因子：
3.3
通讯作者：
P. Brickle
中科院分区：
文献类型：
--
作者：
P. Brewin;T. Farrugia;Chris Jenkins;P. Brickle
在一个有执照的渔场和缺乏渔业管理的国家管辖范围以外的邻近地区，研究了巴塔哥尼亚齿鱼底置延绳捕捞对脆弱海洋生态系统（VMEs）的影响。利用MaxEnt预测了VME分类群分布，并与ABNJ和许可船队的捕捞足迹进行了比较。ABNJ的渔业足迹几乎是许可水域的两倍。低渔获努力度（0 ~ 3.4 h km−2）的足迹在各区域间相似，而中渔获努力度（3.4 ~ 10.2 h km−2）和高渔获努力度（10.2 ~ 45.3 h km−2）的足迹分别是ABNJ的4倍和13倍。ABNJ地区VME指标类群的捕捞重叠率较高（32.62 ~ 61.99%），而VME指标类群的捕捞重叠率较低（6.45 ~ 9.82%）。我们的研究结果表明，尽管VME指标分类群的主要区域位于管辖水域内，但在邻近的公海上存在重要的VME栖息地，这些栖息地可能受到无管制捕捞的高度影响。这引起了人们的关注，即在VME跨越管理区域和管理不一致或未管理区域的情况下，ABNJ渔业可能破坏国内VME管理。加强区域公海渔业管理和监测程序将有利于渔业生态系统的管理。
Impacts of Patagonian toothfish bottom-set longline fishing on vulnerable marine ecosystems (VMEs) are examined in a licenced fishery and adjacent areas beyond national jurisdiction (ABNJ) lacking fishery management. VME taxa distributions were predicted using MaxEnt and compared to fishing footprints of ABNJ and licenced fleets. The ABNJ fishery footprint was almost twice as large as in licenced waters. Whilst the footprint of low fishing effort (0.0–3.4 h km−2) was similar between areas, footprints of medium (3.4–10.2 h km−2) and high (10.2–45.3 h km−2) fishing effort were 4 and 13 times greater, respectively, in ABNJ. Percent overlap of licenced fishing distribution on VME indicator taxa groups was low (6.45–9.82%) compared to the considerably higher (32.62–61.99%) percentage fishing overlap on VME indicator distribution in ABNJ. Our results show that, despite the main area of VME indicator taxa being found within jurisdictional waters, there are important VME habitats on the adjacent high-seas that are potentially highly impacted by unregulated fishing. This raises concerns regarding the potential for ABNJ fisheries to undermine domestic VME management where VMEs straddle managed areas and areas that are inconsistently managed or unmanaged. Management of VMEs would benefit from strengthening regional high-seas fishing governance and monitoring procedures.