This paper presents an isotopic characterization (δ13C and δ15N) of modern huemul from Patagonian Andean forest. This deer is considered an endemic species, now inhabiting the sub-Antarctic forest of Chile and Argentina. ...

Dated molecular phylogenetic trees show that the Andean uplift had a major impact on South American biodiversity. For many Andean groups, accelerated diversification (radiation) has been documented. However, not all Andean ...

America comprises three biogeographic regions: Nearctic, Neotropical and Andean. In between them, two transition zones (TZ) have been proposed: Mexican and South American. The biogeographic provinces belonging to a TZ have ...

Vicugna vicugna Molina is a mammal of relatively large size and conspicuous habits; nevertheless, its southernmost distribution limit in Chile is not well established. Many authors were fixed this limit at 27 degrees 30'S, ...

Biogeographic transitions may play a significant role in generating unique biodiversity patterns along different spatial dimensions of the geobiosphere. The extent, however, to which the presence of large-scale biogeographic ...

The study of how climatic niches change over evolutionary time has recently attracted the interest of many researchers. Different methodologies have been employed principally to analyze the temporal dynamics of the niche ...

The endangered Andean cat Leopardus jacobita was considered an endemic of the Andes at altitudes above 3,000 m, until it was discovered in the Andean foothills of central Argentina in 2004. We carried out surveys for Andean ...

Geologic events promoting the aridization of southern South America contributed to lineage divergences and species differentiation through geographic (allopatric divergence) and biotic and abiotic factors (ecological ...