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首页> 外文期刊>ICES Journal of Marine Science >Comparison of approaches for incorporating depredation on fisheries catches into Ecopath
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Comparison of approaches for incorporating depredation on fisheries catches into Ecopath

机译：将渔业残疾纳入eCopath的方法比较

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摘要

Ecosystem-based approaches are increasingly used in fisheries management to account for the direct trophic impacts of fish population harvesting. However, fisheries can also indirectly alter ecosystem structure and functioning, for instance via the provision of new feeding opportunities to marine predators. For instance, marine depredation, where predators feed on fishery catches on fishing gear, is a behaviour developed by many marine species globally. This behaviour can modify both the ecological role of predators and fisheries performance. Yet, these ecosystem-wide effects of depredation are rarely considered holistically. In this study, we explored different ways of incorporating depredation into an Ecopath trophic model. We assessed, through a subantarctic case study, how three alternative model structures can account for depredation effects on fishery catches, predator and non-commercial prey populations, as well as target fish stocks. While none adequately addresses all facets of depredation, the alternative models can to some extent capture how depredation can lead to increased fishing pressure on stocks. As structural specificities of Ecopath prevented us from representing other depredation effects such as provisioning effects for predator populations, we conclude this study with a set of guidance to effectively capture the complex effects of depredation in marine ecosystems and fisheries models.
机译：基于生态系统的方法越来越多地用于渔业管理，以解释鱼群收获的直接营养意见。然而，渔业也可以间接地改变生态系统结构和运作，例如通过为海洋捕食者提供新的饲养机会。例如，海洋掠夺，捕食者在渔具上捕捞渔具的捕食者，是全球许多海洋物种开发的行为。这种行为可以修改捕食者和渔业性能的生态作用。然而，这些生态系统的皱痕效应很少被全面地考虑。在这项研究中，我们探讨了将掠夺纳入eCopath营养师模型的不同方式。我们通过小提治局案例研究评估，三种替代模型结构如何考虑对渔业捕获，捕食者和非商业猎物群以及目标鱼类的掠夺影响。虽然没有充分解决所有掠夺的方面，但替代模型可以在一定程度上捕捉掠夺如何导致股票增加钓鱼压力。由于Ecopath的结构性特异性阻止了我们代表了其他虐待效应，例如捕食者群体的拨款效果，我们将这项研究结束了一系列指导，以有效捕获海洋生态系统和渔业模型中掠夺的复杂影响。

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  • 来源
    《ICES Journal of Marine Science》 |2020年第8期|3153-3167|共15页
  • 作者

    Clavareau Lyndsay; Marzloff Martin P.; Trenkel Verena M.; Bulman Catherine M.; Gourguet Sophie; Le Gallic Bertrand; Hernvann Pierre-Yves; Peron Clara; Gasco Nicolas; Faure Johanna; Tixier Paul;

  • 作者单位

    IFREMER Dept Oceanog & Dynam Ecosyst 1625 Route St Anne F-29280 Plouzane France|IFREMER Dept Ressources Biol & Environm Rue Ile dYeu F-44311 Nantes 3 France;

    IFREMER Dept Oceanog & Dynam Ecosyst 1625 Route St Anne F-29280 Plouzane France;

    IFREMER Dept Ressources Biol & Environm Rue Ile dYeu F-44311 Nantes 3 France;

    CSIRO Oceans & Atmosphere GPO Box 1538 Hobart Tas 7001 Australia;

    Univ Brest IFREMER CNRS UMR 6308 AMURE Unite Econ Maritime IUEM Rue Dumont dUrville F-29280 Plouzane France;

    Univ Brest IFREMER CNRS UMR 6308 AMURE IUEM Brest France;

    IFREMER Lab Technol & Biol Halieut Unite Sci & Technol Halieut F-56100 Lorient France|Agrocampus Ouest ESE Inst Agro Ecol & Ecosyst Hlth 65 Rue St Brieuc F-35042 Rennes France;

    UA Lab Biol Organismes & Ecosyst Aquat BOREA Museum Natl Hist Nat CNRS UCN IRD SU CP 26 43 Rue Cuvier F-75005 Paris France;

    UA Lab Biol Organismes & Ecosyst Aquat BOREA Museum Natl Hist Nat CNRS UCN IRD SU CP 26 43 Rue Cuvier F-75005 Paris France;

    UA Lab Biol Organismes & Ecosyst Aquat BOREA Museum Natl Hist Nat CNRS UCN IRD SU CP 26 43 Rue Cuvier F-75005 Paris France;

    Deakin Univ Sch Life & Environm Sci Burwood Vic 3125 Australia;

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  • 正文语种 eng
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  • 关键词

    Crozet; depredation; Ecopath; ecosystem model; Kerguelen; marine predators; model structure;

    机译：rozzet;掠夺;ecopath;生态系统模型;kerguelen;海洋捕食者;模型结构;

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