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Post-disturbance changes in a desert breeding bird community

机译:沙漠繁殖鸟类群落的扰动后变化

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We examined breeding bird species richness, density, and community composition on a California desert riparian site in 1980 and, following construction of flood control structure and subsequent vegetation restoration, again in 1995. Both species richness and bird abundance declined markedly between 1980 and 1995. Except for turnover in locally scarce breeders, however, avian community composition did not shift significantly. Alteration and removal of much of the desert riparian habitat formerly on-site is probably responsible for the changes reflected in bird community structure, such that richness and density are now comparable to Breeding Bird Censuses conducted in other desert scrub habitats despite the intermittent stream that still transects the site.
机译:我们在1980年以及1995年在防洪结构建设和随后的植被恢复之后,在加利福尼亚沙漠河岸站点上研究了繁殖鸟类物种的丰富度,密度和群落组成。在1980年至1995年之间,物种丰富度和鸟类丰度均明显下降。但是,除了本地稀少的育种者的周转率外,禽类群落的组成没有明显变化。以前在现场改变和去除的许多沙漠河岸生境可能是鸟类群落结构所反映的变化的原因,因此,尽管仍存在断续的溪流,但其丰富度和密度现在可与在其他沙漠灌丛生境中进行的繁殖鸟类普查相媲美。横切该站点。

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