Article
Diversity and niche evolution along aridity gradients in north american lizards (phrynosomatidae).
Evolution; international journal of organic evolution - 1 Jun 2013
Wiens John J, Kozak Kenneth H, Silva Natalia
Abstract excerpt
Deserts occupy approximately 12% of the Earth's land surface, and are thought to have species poor but highly specialized biotas. However, few studies have examined the evolutionary origins of desert biotas and of diversity patterns along aridity gradients. Further, it is unclear if species occurring in more extreme conditions on a given niche axis (i.e., precipitation) are more specialized for those conditions...
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