Global amphibian population decline is one of the better documented symptoms of bio-
diversity loss on our planet, and one of the environmental super-problems humans have …

Background Over the last ten years we have seen great efforts focused on revising
amphibian systematics. Phylogenetic reconstructions derived from DNA sequence data …

Mesoamerica, the area composed of Mexico and Central America, is the third largest of the
world's biodiversity hotspots. The Central American herpetofauna currently consists of 493 …

Comparative phylogenetic studies of adaptation are uncommon in biomechanics and
physiology. Such studies require data collection from many species, a challenge when this …

The hypothesis that endemic species could have originated by the isolation and divergence
of peripheral populations of widespread species can be tested through the use of ecological …

Aim The study of biogeographic barriers is instrumental in understanding the evolution and
distribution of taxa. With the increasing availability of empirical datasets, emergent patterns …

ABSTRACT The Madrean Archipelago in southern Arizona and southwestern New Mexico
consists of 22 mountain ranges south of the Mogollon Rim. Herpetofaunal lists for these …

Abstract Relative to South America's ecoregions, the temperate grasslands of the Pampas
have been poorly studied from a phylogeographic perspective. Based on an intermediate …

Aim Climate is thought to exert a strong influence on animal body sizes. We examined the
relationship between amphibian body size and several climatic variables to discern which …

Allopatric divergence following the formation of geographical features has been implicated
as a major driver of evolutionary diversification. Widespread species complexes provide …