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首页> 外文期刊>Ocean & coastal management >The effect of abundance changes on a management strategy evaluation for the Atlantic surfclam (Spisula solidissima) using a spatially explicit, vessel- based fisheries model
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The effect of abundance changes on a management strategy evaluation for the Atlantic surfclam (Spisula solidissima) using a spatially explicit, vessel- based fisheries model

机译：使用空间明确的，基于船只的渔业模型，丰度变化对大西洋海浪（Spisula solidissima）管理策略评估的影响

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摘要

Increased bottom water temperatures have caused a relocation and contraction of the range of the Atlantic surfclam, Spisula solidissima, in the Mid-Atlantic Bight (MAB). Consequences include declining stock abundance and landings per unit effort (LPUE) in southern portions of the range. A management strategy evaluation (MSE) assessed the potential of rotational closures to improve surfclam productivity and fishery viability under three levels of abundance. In simulations, fishing vessels harvest the stock under performance and quota constraints and captain behavioral proclivities. Management alternatives examined included the addition of area manage. ment to the current management plan using two closure location rules and three closure durations at two levels of incidental mortality. Simulations showed that area management increased stock abundance and fishery LPUE, particularly when surfclam abundance was low. Simulations suggest area management could help insulate the stock and commercial fishery from further shifts in range.
机译：升高的底水温度已导致大西洋中部海岸线（MAB）的大西洋冲浪蛤Spisula solidissima范围重新定位和收缩。后果包括该范围南部部分的存量丰度下降和单位工作量下降（LPUE）。管理策略评估（MSE）在三个丰度水平下评估了轮流封堵技术在提高海蛤生产力和渔业生存能力方面的潜力。在模拟中，渔船在性能和配额限制以及船长的行为习惯下收获种群。审查的管理备选方案包括增加区域管理。使用两个关闭位置规则和三个关闭持续时间，以两个偶然死亡率水平对当前管理计划进行评估。模拟表明，区域管理增加了鱼类的丰度和渔业LPUE，特别是在浮游生物的丰度较低时。模拟表明，区域管理可以帮助隔离种群和商业渔业，使其免受范围进一步变化的影响。

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