To investigate the influence of bioclimatic, productivity and topographic variables on avian diversity patterns in riparian habitats along a savanna/humid forest environmental gradient. We investigate how this gradient affects patterns of taxonomic and phylogenetic alpha and beta diversities, and whether the changes observed along the river are the result of taxonomic (and phylogenetic) replacement or nestedness‐resultant dissimilarities. We also explore a potential ecological mechanism to account for differences in species richness along the gradient.

中文翻译：

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气候沿环境梯度是亚马逊河岸生境中鸟类多样性的主要驱动力

为了研究生物气候，生产力和地形变量对沿大草原/湿润森林环境梯度的河岸生境中鸟类多样性格局的影响。我们研究了这种梯度如何影响分类学和系统发育的α和β多样性的模式，以及沿河观察到的变化是分类学（和系统发育）替代的结果还是嵌套导致的差异。我们还探索了一种潜在的生态机制来解释物种丰富度沿梯度的差异。