Patricio de Los Ríos, Esteban Quinán and Patricio Acevedo A.
BRAZILIAN JOURNAL OF BIOLOGY 74, 1 (2014)
The Chilean Patagonia has numerous kinds of inland water ecosystems such as lakes, ponds, wetlands and rivers that have been poorly studied due to access difficulties. This study was carried out in Aysen region, in southern Chile, and it included different kinds of water bodies such as rivers, streams, ponds, lagoons and lakes distributed along an altitudinal gradient at 46° S. It was found a low species number, essentially cladocerans, copepods and amphipods. A null model was applied in order to determine the existence of regulator factors of species associations, and the results
revealed that they are not random. The patterns would be influenced by geographical and limnological characteristics
of the studied sites. Our results would agree with regional studies on habitat heterogeneity such as in Torres del Paine
National Park and other zones in Tierra del Fuego island.