...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Ocean & coastal management >Captains' response to a declining stock as anticipated in the surfclam (Spisula solidissima) fishery on the US Mid-Atlantic coast by model evaluation
【24h】

Captains' response to a declining stock as anticipated in the surfclam (Spisula solidissima) fishery on the US Mid-Atlantic coast by model evaluation

机译：通过模型评估，船长对美国中大西洋沿岸蛤（Spisula solidissima）渔业捕捞量下降的反应

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Mid-Atlantic Bight (MAB) warming accompanied by a decline in recruitment has slowly reduced surf clam abundance. Simulations examined fishery dynamics during an extended period of low recruitment followed by stock recovery after a high-recruitment event. The model assigned performance characteristics to each vessel and gave captains defined behavioral proclivities including a tendency to search, to communicate with other captains, to use survey data, and to integrate variable lengths of past-history performance in targeting fishing trips. During the simulated excursion in abundance, LPUE (landings per unit effort) declined as lower abundance required an extended time at sea to catch a full load. Captains expanded their geographic range of interest steaming farther from port in an effort to maintain their performance. Net revenue declined. Use of survey data significantly improved performance. About equal in positive effect was moderate searching. Other behaviors incurred penalties. Communication failed to improve performance because both poor and good information was transferred. Reliance on a long period of catch history failed to improve performance because information was out of date during a time of rapidly changing conditions. In these simulations, no captains' behaviors prevented a collapse in vessel economics at low abundance, but certain behaviors limited the degree and duration of economic dislocation. (C) 2016 Elsevier Ltd. All rights reserved.
机译：大西洋中部地区（MAB）的变暖伴随着招聘人数的减少，已逐渐降低了冲浪蛤的数量。模拟检查了长期低招聘期间的渔业动态，然后是高招聘事件之后的种群恢复。该模型为每艘船分配了性能特征，并赋予船长定义的行为倾向，包括倾向搜索，与其他船长进行交流，使用调查数据以及整合不同长度的过去历史性能来瞄准钓鱼之旅。在模拟的丰富旅行中，LPUE（每单位努力着陆量）下降，因为较低的丰富度需要更长的海上时间才能满载。船长扩大了自己感兴趣的地理范围，从港口驶向更远的地方，以保持其性能。净收入下降。使用调查数据显着提高了性能。积极搜寻的效果大致相等，适度搜寻。其他行为也会受到处罚。交流未能改善性能，因为传递了不良信息和良好信息。由于信息在瞬息万变的时期中已过时，因此依赖长期的捕获历史记录无法提高性能。在这些模拟中，没有船长的行为能防止船舶经济在低丰度时崩溃，但是某些行为会限制经济混乱的程度和持续时间。 （C）2016 Elsevier Ltd.保留所有权利。

著录项

  • 来源
    《Ocean & coastal management》 |2016年第12期|52-68|共17页
  • 作者

    Powell Eric N.; Klinck John M.; Hofmann Eileen E.; Moreno Paula; Kuykendall Kelsey M.; Munroe Daphne M.; Mann Roger;

  • 作者单位

    Univ Southern Mississippi, Gulf Coast Res Lab, 703 E Beach Dr, Ocean Springs, MS 39564 USA;

    Old Dominion Univ, Dept Ocean Earth & Atmospher Sci, Ctr Coastal Phys Oceanog, 4111 Monarch Way,3rd Floor, Norfolk, VA 23529 USA;

    Old Dominion Univ, Dept Ocean Earth & Atmospher Sci, Ctr Coastal Phys Oceanog, 4111 Monarch Way,3rd Floor, Norfolk, VA 23529 USA;

    Univ Southern Mississippi, Gulf Coast Res Lab, 703 E Beach Dr, Ocean Springs, MS 39564 USA;

    Univ Southern Mississippi, Gulf Coast Res Lab, 703 E Beach Dr, Ocean Springs, MS 39564 USA;

    Rutgers State Univ, Haskin Shellfish Res Lab, 6959 Miller Ave, Port Norris, NJ 08349 USA;

    Virginia Inst Marine Sci, Coll William & Mary, POB 1346, Gloucester Point, VA 23062 USA;

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

    Captain; Surfclam; Fishery model; Fishing practice; Abundance decline;

    机译：船长;瑟夫克拉姆;渔业模式;捕鱼习惯;丰度下降;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号