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首页> 外文期刊>ICES Journal of Marine Science >Evaluating management strategies for eastern Bering Sea walleye pollock (Theragra chalcogramma) in a changing environment
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Evaluating management strategies for eastern Bering Sea walleye pollock (Theragra chalcogramma) in a changing environment

机译：在变化的环境中评估白令海东部角膜白斑鳕（Theragra chalcogramma）的管理策略

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摘要

The impacts of climate change on fish and fisheries is expected to increase the demand for more accurate stock projections and harvest strategies that are robust to shifting production regimes. To address these concerns, we evaluate the performance of fishery management control rules for eastern Bering Sea walleye pollock stock under climate change. We compared the status quo policy with six alternative management strategies under two types of recruitment pattern simulations: one that follows temperature-induced trends and the other that follows a stationary recruitment pattern similar to historical observations. A subset of 82 Intergovernmental Panel on Climate Change climate models provided temperature inputs from which an additional 100 stochastic simulated recruitments were generated to obtain the same overall recruitment variability as observed for the stationary recruitment simulations. Results indicate that status quo management with static reference points and current ecosystem considerations will result in much lower average catches and an increased likelihood of fishery closures, should reduced recruitment because of warming conditions hold. Alternative reference point calculations and control rules have similar performance under stationary recruitment relative to status quo, but may offer significant gains under the changing environmental conditions.
机译：预计气候变化对鱼类和渔业的影响将增加对更准确的种群预测和捕捞策略的需求，这些需求对改变生产制度具有强大的作用。为了解决这些问题，我们评估了气候变化下白令海东部角膜白斑鳕鱼种群的渔业管理控制规则的绩效。在两种招聘模式模拟下，我们将现状政策与六种替代管理策略进行了比较：一种遵循温度诱导的趋势，另一种遵循类似于历史观察的固定招聘模式。 82个政府间气候变化专门委员会气候模型的一个子集提供了温度输入，从中产生了另外100个随机模拟招聘，以获得与固定招聘模拟所观察到的相同的总体招聘变异性。结果表明，采用静态参考点和当前生态系统考虑因素进行现状管理将导致平均捕获量大大降低，并且由于气候变暖而应减少的捕捞活动将导致渔业关闭的可能性增加。相对于现状，替代性参考点计算和控制规则在固定招募下具有相似的性能，但在不断变化的环境条件下可能会带来重大收益。

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  • 来源
    《ICES Journal of Marine Science》 |2011年第6期|p.1297-1304|共8页
  • 作者

    James N. lanelli; Anne B. Hollowed; Alan C Haynie; Franz J. Mueter; Nicholas A. Bond;

  • 作者单位

    Resource Ecology and Fisheries Management Division, Alaska Fisheries Science Center, National Oceanic and Atmospheric Administration,National Marine Fisheries Service, 7600 Sand Point Way NE, Seattle, WA 98715, USA;

    Resource Ecology and Fisheries Management Division, Alaska Fisheries Science Center, National Oceanic and Atmospheric Administration,National Marine Fisheries Service, 7600 Sand Point Way NE, Seattle, WA 98715, USA;

    Resource Ecology and Fisheries Management Division, Alaska Fisheries Science Center, National Oceanic and Atmospheric Administration,National Marine Fisheries Service, 7600 Sand Point Way NE, Seattle, WA 98715, USA;

    School of Fisheries and Ocean Sciences, 375 Lena Point, 77707 Pt. Lena Loop Rd, Juneau, AK 99801, USA;

    Joint Institute for the Study of Atmosphere and Ocean, University of Washington, Box 354925, Seattle, WA 98795, USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    climate models; eastern bering sea walleye pollock; fisheries management; harvest strategies;

    机译：气候模式;东白令海角眼鳕渔业管理;收获策略;

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