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首页> 外文期刊>Reviews in Fisheries Science & Aquaculture >Multiple-Use Management Strategies and Marine Reserves
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Multiple-Use Management Strategies and Marine Reserves

机译：多用途管理策略和海洋保护区

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摘要

Using parameters from an actual fishery, a dynamic optimisation model is used to evaluate the economic payoffs from fishing between: (1) no-take reserve and harvesting outside of a reserve; (2) unrestricted spatial access fishery; and (3) positive harvest rate in a restricted access area, but at a rate less than in unrestricted access area. The results indicate that under a wide range of parameters representing fish dispersal, imperfect control of exploitation rate, fish growth rates, and stochastic shocks a restricted spatial access fishery provides higher economic benefits than an unrestricted spatial access fishery as well as a no-take reserve. Optimal harvest and the economic gain of a restricted spatial access fishery increase the higher is the growth rate, the larger is reproductive advantage of protected area, the greater are the magnitude and frequency of shocks that reduce fish stock in unrestricted access area. By contrast, the optimal harvest and economic gain decline the greater is the mobility of the species and the higher is the level fishing activities harm fish growth in restricted access area. A key finding is that spatial management of fish habitat that allows for differential rates of exploitation by area can increase the inter-temporal fisher profits.
机译：使用来自实际渔业的参数，使用动态优化模型来评估捕捞之间的经济收益：（1）无捕捞储备和在储备以外的捕捞; （2）不受限制的空间获取渔业; （3）限制进入区域的正收获率，但低于非限制进入区域的收获率。结果表明，在代表鱼类扩散，对剥削率，鱼类生长速率和随机冲击的控制不完善的广泛参数范围内，与无限制空间获取和无获取储备相比，有限空间获取的渔业提供更高的经济效益。 。限制捕捞空间的渔业的最佳收获和经济收益增长速度越高，保护区的繁殖优势越大，减少无限制捕捞区域鱼类种群的冲击的幅度和频率就越大。相比之下，最佳捕捞量和经济收益下降的幅度越大，物种的流动性越高，捕鱼活动的水平越高，限制进入区域的鱼类生长就越严重。一个关键的发现是，鱼类栖息地的空间管理可以按地区进行不同程度的剥削，从而可以增加跨时期渔民的利润。

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