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首页> 外文期刊>ICES Journal of Marine Science >Interaction frequency of seabirds with longline fisheries: risk factors and implications for management
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Interaction frequency of seabirds with longline fisheries: risk factors and implications for management

机译：海鸟与延绳钓渔业的互动频率：危险因素与管理影响

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摘要

Fishery bycatch poses a serious threat to seabird populations globally. Traditional haul-only post-capture observations are inadequate and inefficient to document seabird bycatch due to the substantial bycatch loss known to occur. Pre-capture observations offer an alternative by documenting seabird interactions leading up to captures. Based on the long-term large-scale dedicated field observations, this study revealed significant risk factors for the pre-capture stages of the seabird bycatch process in pelagic longline fisheries using Bayesian methods. Rough sea conditions were found to correlate with more seabirds following fishing vessels. Species identity, density effect, inter-species effect, and sea condition were found to significantly affect how frequently seabirds aggregated around a fishing vessel engage in bait-taking interactions. Intra-species competition was found to be the dominant type of density effect. Moreover, a web of inter-species interactions was identified to facilitate the bait-taking of superior competitors at the expense of inferior ones. The findings of this study are relevant to fishery managers in updating current data collection protocols to alleviate data issues caused by bycatch loss, to conservation biologists in quantifying bycatch risks for susceptible seabird populations, and in aiding the design and evaluation of bycatch mitigation measures.
机译：渔业兼遗物对全球对海鸟人口构成严重威胁。传统的拖尾后捕获后观测不足，并且由于已知的大量搭配损失，将海鸟兼容记录海鸟兼容。预先捕获观察通过记录导致捕获的海鸟互动提供替代方案。本研究基于长期大规模专用现场观察，展示了使用贝叶斯队方法在Pelagic Longline渔业中海鸟兼捕过程的预捕获阶段的显着风险因素。发现汹涌的海洋状况与渔船后更多的海鸟相关联。物种形式，密度效应，物种间效应和海洋状况显着影响海鸟在捕鱼船上聚集的频率如何参与诱饵相互作用。物种内竞争被发现是主要的密度效应类型。此外，确定了物种间相互作用的网，以促进诱饵竞争对手以劣质竞争对手。该研究的结果与渔业管理人员更新在更新当前数据收集协议中，以减轻兼遗物损失引起的数据问题，以保护生物学家量化易感海鸟种群的兼遗物风险，并在实现兼捕缓解措施的设计和评估。

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