Bycatch rates in fisheries largely driven by variation in individual vessel behaviour
Bycatch rates in fisheries largely driven by variation in individual vessel behaviour
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渔业的兼捕率很大程度上是由个体船只行为的变化驱动的
DOI：
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发表时间：
2022
影响因子：
27.6
通讯作者：
C. Wilcox
中科院分区：
文献类型：
--
作者：
Leslie A. Roberson;C. Wilcox
副渔获物继续导致海鸟、鲨鱼、海洋哺乳动物和海龟等许多受威胁海洋物种的减少。管理框架通常通过船队一级的捕鱼控制来处理附带渔获物。然而，个别经营者的捕鱼方法和捕鱼效率各不相同。如果经营者有不同的目标能力，他们也应该有不同的能力，以避免误捕。我们分析了来自不同地理区域、渔具类型和目标物种的五个工业渔业的个体经营者之间受威胁物种兼捕的变化。在16个案例中，有15个案例的渔船是混捕的重要预测因素，包括对渔民来说成本高或低或作为潜在目标副产品具有经济价值的物种。令人鼓舞的是，我们在所有五个部门都发现了高目标和低副渔获物的经营者，包括以全球副渔获物死亡率高而闻名的渔具。这些结果表明，通过针对特定业绩群体的干预措施，减少渔业对环境的负面影响的机会尚未得到利用，这支持了管理全球渔业的另一种观点。捕鱼方法和捕鱼效率因个体经营者而异，影响到经营者避免混获的能力。这项研究分析了不同地理区域、渔具类型和目标物种的工业化渔业个体经营者之间受威胁物种兼捕的变化
Fisheries bycatch continues to drive the decline of many threatened marine species such as seabirds, sharks, marine mammals and sea turtles. Management frameworks typically address incidental catch with fleet-level controls on fishing. Yet, individual operators differ in their fishing practices and efficiency at catching fish. If operators have differing abilities to target, they should also have differing abilities to avoid bycatch. We analysed variations in threatened species bycatch among individual operators from five industrial fisheries representing different geographic areas, gear types and target species. The individual vessel is a significant predictor of bycatch for 15 of the 16 cases, including species that represent high or low costs to fishers or have economic value as potentially targeted byproducts. Encouragingly, we found high-target and low-bycatch operators in all five sectors, including gears known for high bycatch mortality worldwide. These results show that there is untapped opportunity to reduce negative environmental impacts of fisheries with interventions targeting specific performance groups of individuals, supporting an alternative perspective towards managing global fisheries. Fishing practices and efficiency at catching fish vary across individual operators with implications about the operators’ ability to avoid bycatch. This study analyses variations in threatened species bycatch among individual operators from industrial fisheries across different geographic areas, gear types and target species
DOI：
10.1073/pnas.1523245113
发表时间：
2016-06-07
影响因子：
11.1
作者：
Barnes, Michele L.;Lynham, John;Leung, PingSun
通讯作者：
Leung, PingSun