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首页> 外文期刊>Canadian Journal of Fisheries and Aquatic Sciences >Effects of variability in spacing of coastal marine reserves on fisheries yield and sustainability
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Effects of variability in spacing of coastal marine reserves on fisheries yield and sustainability

机译：沿海海洋保护区间距变化对渔业产量和可持续性的影响

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摘要

The size and configuration of marine reserves best suited to reaching fisheries and conservation goals are poorly understood. It has been suggested that variable spacing between reserves is essential to the success of a system of marine reserves. We used numerical models to examine the effect of variable spacing on the efficacy of marine reserves for managing a fish species with sedentary adults and planktonic larvae. Variability in reserve spacing affected catch and recruitment relative to values for a uniform configuration of reserves only for populations near collapse even in the presence of a system of reserves. For species with low fishing rates or large marine reserves, variability in spacing had only a minor effect. At high fishing rates andsmall reserve sizes, variable reserve placement had a positive local effect on catch and recruitment when several reserves fell close to each other. These configurations led to uneven spatial distributions with greater catch and recruitment in areas witha higher concentration of reserves. Variable reserve spacing can offer additional protection to overfished populations along certain sections of the coastline, but concern for spatial homogeneity will argue for a uniform distribution of reserves covering an adequate proportion of the entire coastline.
机译：人们最不了解最适合实现渔业和保护目标的海洋保护区的规模和配置。已经提出，保护区之间的可变间隔对于海洋保护区系统的成功至关重要。我们使用数值模型来检查可变间距对海洋保护区管理久坐成年和浮游幼虫鱼类的功效的影响。储备间距的变化影响捕捞量和征募量，相对于仅在濒临崩溃的人口中即使存在储备系统，统一配置的储备值也是如此。对于捕捞率低或海洋保护区丰富的物种，间距的变化影响很小。在高捕捞率和小的保护区规模的情况下，当几个保护区彼此接近时，可变的保护区布置对捕捞和招募产生积极的局部影响。这些构造导致了不均匀的空间分布，在储量集中度较高的地区捕捞和招募活动增多。可变的保护区间距可以为沿海岸线某些区域的过度捕捞种群提供额外的保护，但是对空间均匀性的关注将要求保护区的均匀分布，覆盖整个海岸线的适当比例。

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