海洋保护区网络的渔业成果:保护水平、连通性和时间问题

IF 7.7 1区 环境科学与生态学 Q1 BIODIVERSITY CONSERVATION
Charlotte Sève, Mokrane Belharet, Paco Melià, Antonio Di Franco, Antonio Calò, Joachim Claudet
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引用次数: 0

摘要

由于渔业的迁移成本,建立完全保护的海洋保护区的大型网络具有挑战性。通常建议使用部分保护区作为替代方案。然而,海洋保护区网络的保护和渔业成果如何随着时间的推移而受到保护水平的调节仍不确定。在这里,我们使用商业开发的底层沿海鱼类的集合种群模型来评估替代管理政策的保护和渔业结果。我们在过度捕捞的案例研究中比较了非空间管理、大型海洋保护区或海洋保护区网络的时间性能。此外,我们还评估了幼虫连接和保护水平如何介导这两种结果的大小。我们区分了海洋保护区中无保护区和更远的无保护区对渔业成果的相对贡献,无保护区的捕捞活动较少,生物量出口潜力较小。我们表明,空间管理优于非空间管理,保护和渔业成果随着保护水平的提高而增加,当通过幼虫扩散连接时,海洋保护区之间区域的渔业成果更高,捕捞量增加之前会出现短期减少。我们的研究结果要求提高保护水平,以实现生态和渔业管理目标。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Fisheries outcomes of marine protected area networks: Levels of protection, connectivity, and time matter
Establishing large networks of fully protected marine protected areas (MPAs) is challenging because of displacement costs for fisheries. The use of partially protected areas is often proposed as an alternative. However, how conservation and fisheries outcomes of MPA networks are mediated through time by the level of protection remains uncertain. Here we use a metapopulation model of a commercially exploited demersal coastal fish to assess conservation and fisheries outcomes of alternative management policies. We compare the temporal performances of nonspatial management, large MPAs, or networks of MPAs in an overfished case study. In addition, we assess how the magnitude of both outcomes is mediated by larval connectivity and level of protection. We distinguish the relative contribution to fisheries outcomes of unprotected areas in between MPAs, and unprotected areas further away, receiving less displaced fishing effort and potential biomass export. We show that spatial management outperforms nonspatial management, that conservation and fisheries outcomes increase with increasing levels of protection, that fisheries outcomes in areas in between MPAs are higher when connected through larval dispersal, and that increases in catch are preceded by a short-term decrease. Our results call for an increase in protection levels to meet both ecological and fisheries management goals.
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来源期刊
Conservation Letters
Conservation Letters BIODIVERSITY CONSERVATION-
CiteScore
13.50
自引率
2.40%
发文量
70
审稿时长
>12 weeks
期刊介绍: Conservation Letters is a reputable scientific journal that is devoted to the publication of both empirical and theoretical research that has important implications for the conservation of biological diversity. The journal warmly invites submissions from various disciplines within the biological and social sciences, with a particular interest in interdisciplinary work. The primary aim is to advance both pragmatic conservation objectives and scientific knowledge. Manuscripts are subject to a rapid communication schedule, therefore they should address current and relevant topics. Research articles should effectively communicate the significance of their findings in relation to conservation policy and practice.
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