Post‐Eocene climate change, niche conservatism, and the latitudinal diversity gradient of New World birds
BA Hawkins, JAF Diniz‐Filho… - Journal of …, 2006 - Wiley Online Library
Aim The aim of this study was to test a variant of the evolutionary time hypothesis for the bird
latitudinal diversity gradient derived from the effects of niche conservatism in the face of
global climate change over evolutionary time. Location The Western Hemisphere. Methods
We used digitized range maps of breeding birds to estimate the species richness at two
grain sizes, 756 and 12,100 km2. We then used molecular phylogenies resolved to family to
quantify the root distance (RD) of each species as a measure of its level of evolutionary …
latitudinal diversity gradient derived from the effects of niche conservatism in the face of
global climate change over evolutionary time. Location The Western Hemisphere. Methods
We used digitized range maps of breeding birds to estimate the species richness at two
grain sizes, 756 and 12,100 km2. We then used molecular phylogenies resolved to family to
quantify the root distance (RD) of each species as a measure of its level of evolutionary …
