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Trait‐mediated filtering drives contrasting patterns of species richness and functional diversity across montane bird assemblages

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Most studies of diversity changes along elevational gradients show a synchronous change in taxonomic, functional and phylogenetic diversity, such that all decline with elevation or show a mid‐elevation peak. However,… Click to show full abstract

Most studies of diversity changes along elevational gradients show a synchronous change in taxonomic, functional and phylogenetic diversity, such that all decline with elevation or show a mid‐elevation peak. However, some studies show asynchronous changes, which challenge us to explain their assembly. Here we used functional trait variation and niche spacing to test the roles of environmental filtering and competition‐driven niche separation in assembly and biodiversity patterns across an elevational gradient.

Keywords: diversity; filtering drives; contrasting patterns; mediated filtering; drives contrasting; trait mediated

Journal Title: Journal of Biogeography
Year Published: 2019

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