Dispersal ability correlates with range size in Amazonian habitat-restricted birds.

摘要: Understanding how species attain their geographical distributions and identifying traits correlated with range size are important objectives in biogeography, evolutionary biology biodiversity conservation. Despite much effort, results have been varied general trends slow to emerge. Studying pools that occupy specific habitats, rather than clades or large groupings of occupying diverse may better identify ranges correlates be more informative for conservation programmes a rapidly changing world. We evaluated correlations between set organismal bird from Amazonian white-sand ecosystems. assessed if consistent when using different data sources phylogenetic hypotheses. found dispersal ability, as measured by the hand-wing index, was both birds non-white-sand sister taxa. White-sand had smaller on average The were similar robust sources. Our suggest patchiness ecosystems limits species' ability reach new habitat islands establish populations.