Ecological Gradients Influencing Waterbird Communities in Black Water Lakes in the Anavilhanas Archipelago, Central Amazonia
Ecological Gradients Influencing Waterbird Communities in Black Water Lakes in the Anavilhanas Archipelago, Central Amazonia
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影响亚马逊中部阿纳维哈纳斯群岛黑水湖水鸟群落的生态梯度
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发表时间：
2012
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影响因子：
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通讯作者：
R. Cintra
中科院分区：
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作者：
R. Cintra
首次在大空间尺度上评估了生态特性对巴西亚马逊流域黑水湖水生鸟类群落的影响。在 45 个湖泊进行了鸟类调查。共记录了48种鸟类3626只；其中，31 种是水生的，其中 18 种主要是鱼食性的。鸟类丰富度和丰度与湖泊形状和生产力没有显着相关，但受水文周期（低水期与高水期）、水深、透明度、湖泊隔离和栖息地丰富度的影响。对湖泊鸟类物种矩阵进行多变量分析（NMDS），以评估这些参数如何影响鸟类群落。鸟类组成的变化与湖泊深度和隔离度呈正相关，与水体透明度和栖息地丰富度呈负相关。结果表明，周期、湖泊物理特征（深度、水透明度）、隔离和栖息地丰富度是亚马逊黑水湖系统水生鸟类群落组成的决定因素。
For the first time, and in a large spatial scale, the influence of ecological properties on the aquatic bird community of black water lakes in Brazilian Amazonia is evaluated. Bird surveys were conducted in 45 lakes. A total of 3626 individuals in 48 bird species were recorded; of these, 31 are aquatic, and 18 of these are primarily piscivorous. Bird richness and abundance were not significantly related to lake shape and productivity but were influenced by hydrological period (low versus high), water depth, transparency, lake isolation, and habitat richness. Matrices of bird species by lake were subjected to multivariate analyses (NMDS) to evaluate how these parameters influence bird community. The variation in bird species composition was positively correlated to lake depth and isolation and negatively correlated to water transparency and habitat richness. The results indicate that period, lake physical characteristics (depth, water transparency), isolation, and habitat richness are determinants of aquatic bird community composition in the black water lake systems of Amazonia.