Effectiveness of engineered in-stream structure mitigation measures to increase salmonid abundance: a systematic review.
Effectiveness of engineered in-stream structure mitigation measures to increase salmonid abundance: a systematic review.
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DOI：
10.1890/07-1311.1
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发表时间：
2009-06
期刊：
影响因子：
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通讯作者：
G. Stewart;Helen R. Bayliss;D. Showler;W. Sutherland;A. Pullin
中科院分区：
文献类型：
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作者：
G. Stewart;Helen R. Bayliss;D. Showler;W. Sutherland;A. Pullin
为了渔业的商业利益或为了退化栖息地的保护目的，经常在河流内安装工程结构以增加鲑鱼的数量。在过去的80年里，这些结构被广泛使用，估计每年花费数亿美元，但在文献中，这些结构的有效性仍然存在广泛的争议。已经进行了许多不同质量的研究，试图解决这个问题，但事实证明，尽管这些结构继续使用，但从业者很难就这些结构的效用达成共识。系统评价方法用于正式综合经验证据，证明工程流内结构作为增加鲑鱼丰度的管理工具的有效性。荟萃分析显示，关于流内设备有效性的证据是模棱两可的。种群规模和生境偏好异质性显著。这种异质性与流宽度有关，流内设备在较大的流中效率较低。因此，广泛使用流内结构进行恢复，特别是在较大的河流中，目前的科学证据基础并不支持。
Engineered in-stream structures are often installed to increase salmonid abundance, either for commercial gain in fisheries or for conservation purposes in degraded habitats. Having been in widespread use for the last 80 years, at an estimated cost of hundreds of millions of U.S. dollars each year, the effectiveness of these structures is still widely debated in the literature. Many studies of varying quality have been undertaken that attempt to address this issue, but it has proved difficult for practitioners to develop a consensus regarding the utility of these structures, despite their continued use. Systematic review methodology was used to formally synthesize empirical evidence regarding the effectiveness of engineered in-stream structures as a management tool to increase salmonid abundance. Meta-analysis shows that evidence regarding the effectiveness of in-stream devices is equivocal. Heterogeneity is significant both for population size and local habitat preference. This heterogeneity is related to stream width, with in-stream devices being less effective in larger streams. Consequently, widespread use of in-stream structures for restoration, particularly in larger streams, is not supported by the current scientific evidence base.