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首页> 外文期刊>ICES Journal of Marine Science >Effectiveness of a feedback management procedure based on controlling the size of marine protected areas through catch per unit effort
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Effectiveness of a feedback management procedure based on controlling the size of marine protected areas through catch per unit effort

机译：基于通过单位捕获量来控制海洋保护区大小的反馈管理程序的有效性

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摘要

The effectiveness of a feedback management procedure using marine protected areas (MPAs) was investigated. This procedure does not control fishing effort, but it does increase the size of the MPA when the catch per unit effort (cpue) is below a predetermined target level and reduces the size when the cpue is above this level. Stability analyses of the approach, which consisted of a population dynamics model and a model to control MPA size, suggest that this procedure can lead to recovery of a depleted population and sustain that population at a predetermined target level, even when there is hyperstability (a non-linear relationship between population size and cpue). An alternative procedure using fishing effort instead of MPA size may also function well, although both procedures may need a long time for a depleted population to approach the target level. Performance of both procedures was examined using numerical simulations focused on system dynamics in the short term after management implementation. The procedure using MPA size was more effective at preventing population collapse. Simulations suggest that if this procedure starts from a desirable level of initial MPA size, it has advantages over the alternative procedure through creating speedier population recovery and a higher level of short-term catch.
机译：研究了使用海洋保护区（MPA）进行反馈管理程序的有效性。此过程不控制捕捞工作量，但是当单位捕捞量（cpue）低于预定目标水平时会增加MPA的大小，而当cpue高于该水平时会减小MPA的大小。该方法由人口动力学模型和控制MPA大小的模型组成的稳定性分析表明，即使存在高度稳定性，该程序仍可导致耗尽人口的恢复并将该人口维持在预定的目标水平（a种群数量与cpue之间的非线性关系）。使用捕捞努力而不是MPA大小的另一种程序也可能运作良好，尽管这两种程序可能都需要很长时间才能使耗尽的人口达到目标水平。在管理实施后的短期内，使用数值模拟检查了这两个程序的性能，这些数值模拟的重点是系统动力学。使用MPA大小的程序可更有效地防止人口崩溃。模拟表明，如果此程序从所需的初始MPA大小开始，则通过创建更快的种群恢复和更高级别的短期捕获，比替代程序具有优势。

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