Biogeography of amphibians and reptiles in Arizona
This article is part of a larger document. View the larger document here.Abstract
We examined patterns of species richness for amphibians and reptiles in Arizona and evaluated patterns in species distribution between ecoregions based on species range size. In Arizona, the Sonoran Desert has the highest herpetofauna diversity, and the southern ecoregions are more similar than other regions. There appear to be distinct low- and mid-elevational faunas. There was no difference in elevational measures or species range sizes between species groups. However, species widespread in one ecoregion tended to have larger distributions in other ecoregions. Relating similarity indices to phylogenies and paleontological information will help us better understand the patterns of colonization and speciation that make Arizona such a herpetologically diverse place.

