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Illegal long-line fishing and albatross extinction risk

机译：非法长线捕鱼和信天翁灭绝的风险

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Birds are commonly entangled in long-line fisheries, and increases in long-line fishing activity have consistently caused declines in seabird populations. Environmental criminology would posit that the risk of such declines is greater in the case of illegal long-line fisheries, which are less likely to implement bycatch mitigation measures. To investigate this possibility we examined the overlap between data on illegal fishing and albatross at-sea occurrence ranges. Moderate correlations were found between mean exposure to illegal fishing and the Red List status of albatross species, but none were found between Red List status and total fishing pressure. A second analysis overlaid albatross at-sea occurrence ranges with long-lining data for the member countries of the Convention on Conservation of Southern Bluefin Tuna to compare the effect of exposure to legal and illegal hooks on Red List status. Lacking a better measure, Country A's hooks were used as a proxy for illegal hooks. Critically Endangered and Endangered species were 12 and 3.4 times more exposed to illegal hooks, respectively, than Near Threatened species, whereas there was no relationship between Red List status and exposure to legal hooks. Country-level analyses confirmed these findings, which provide evidence that illegal long-line fishing poses a particular threat to the survival of albatrosses. The findings suggest that the bird conservation lobby should work closely with fisheries authorities to tackle illegal fishing, and that research should identify the highest risk areas of overlap between illegal fishing and albatross at-sea ranges.
机译：鸟类通常纠缠在延绳钓渔业中，而延绳钓活动的增加一直导致海鸟种群减少。环境犯罪学认为，在非法延绳钓渔业中，这种下降的风险更大，而这种延绳钓渔业不太可能实施兼捕缓解措施。为了调查这种可能性，我们研究了非法捕鱼和信天翁在海上发生范围的数据之间的重叠。在平均非法捕捞量和信天翁物种的红色名录状况之间发现了适度的相关性，但在红色清单状况与总捕捞压力之间没有发现相关性。第二项分析覆盖了信天翁在海上的发生范围，并提供了《养护南部蓝鳍金枪鱼公约》成员国的长期数据，以比较暴露于合法和非法鱼钩对红色名录状况的影响。由于缺乏更好的措施，A国的鱼钩被用作非法鱼钩的代理。与濒临灭绝的物种相比，极度濒危和濒临灭绝的物种分别比近威胁物种高12倍和3.4倍，而“红色名录”的状况与合法钩体的暴露之间没有任何关系。国家一级的分析证实了这些发现，这提供了证据，证明非法的长线捕鱼对信天翁的生存构成了特殊的威胁。研究结果表明，鸟类保护游说组织应与渔业当局密切合作，以应对非法捕捞，研究应确定非法捕捞和信天翁在海上重叠的最高风险区域。

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