Despite the impressive growth of knowledge on the phylogenetic systematics of dart-poison
frogs and their relatives (Dendrobatoidea) over the past decade, many problems remain to …

The distribution of species in the present is just a snapshot in time after millions of years of
change. Pleistocene climatic cycles, varying from 100ky to sub‐millennial scales, played an …

Collisions between tectonic plates lead to the rise of new mountain ranges that can separate
biological populations and ultimately result in new species. However, the identification of …

Mountainous areas host a disproportionately large fraction of Earth's biodiversity, suggesting
a causal relationship between mountain building and biological diversification. Mountain …

Gaps or wide valleys in mountain systems are of much interest to biogeographers and
evolutionary biologists since they shape species distributions as well as inter-and …

Colombia hosts the second highest amphibian species diversity on Earth, yet its fauna
remains poorly studied, especially using molecular genetic techniques. We present the …

Determining the relative importance of dispersal and vicariance events across neotropical
regions is a major goal in biogeography. These events are thought to be related to important …

Vicariance is the simplest explanation for divergence between sister lineages separated by
a potential barrier, and the northern Andes would seem to provide an ideal example of a …

The northern Andes are a geographically, climatically, and ecologically complex area that
harbors a high number of species and presents a high level of endemism. However, the …

Aim The drivers of extraordinary species diversity and endemism in biodiversity hotspots
remain elusive. To identify such drivers, it is necessary to understand the origin of allopatric …