Trajectories and magnitude of change in coral reef fish populations in Philippine marine reserves: a meta-analysis
Trajectories and magnitude of change in coral reef fish populations in Philippine marine reserves: a meta-analysis
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菲律宾海洋保护区珊瑚礁鱼类种群变化的轨迹和幅度：荟萃分析
作者：
R. J. Maliao;Alan T. White;A. Maypa;R. Turingan
海洋储备在全球范围内广泛实施，以实现保护和渔业管理目标。 ）在建立之前相对于建立后的几年（时间比较），（3）根据规模，年龄和执法能力分类的储量元群中的大量（总平均持续时间为8.2年）的大（总平均）22.3公顷的珊瑚礁储量（平均持续时间为8.2年）。然而，从同一储量中的鱼类的整体密度为止，从其建立之前，其整体密度保持不变。在建立储量的年份之后的几年中，非倍率的鱼类均显着增加。在空间比较中，年轻的储量。临时比较。维持海洋保护区所必需的监管机制。
Marine reserves are widely implemented worldwide to meet both conservation and fisheries management goals. This study examines the efficacy of Philippine marine reserves using meta-analysis by comparing variations in fish density (1) between reserves and adjacent fished reefs (spatial comparison), (2) within reserves before establishment relative to years following the establishment (temporal comparison), and (3) among reserves classified based on size, age, and enforcement capacity. A grand (total) mean of nineteen 22.3 ha coral reef reserves, protected for a mean duration of 8.2 years, were included in the meta-analyses. The overall density of fishes was higher in the reserves compared with the fished reefs and this difference was largely accounted for by exploited fishes. However, the overall density of fishes within the same reserves remained similar from the period before its establishment to several years following its establishment. Only the density of nonexploited fishes increased significantly during years subsequent to the establishment of the reserves. Neither age nor size of reserves correlated with pattern of change in fish density following the establishment of the reserves; however, fish density was consistently higher in larger and older reserves relative to smaller and younger reserves in the spatial comparison. Furthermore, well-enforced reserves had higher density of exploited fishes relative to less-enforced reserves in both spatial and temporal comparisons. In general, the magnitude and trajectory of change in fish density following the establishment of Philippine marine reserves are influenced by (1) functional groups of fishes under consideration, (2) size and age of the reserve, and (3) level of enforcement of the regulatory mechanisms necessary to sustain a marine reserve.