Diversidad de peces de la cuenca del río Magdalena, Colombia

Carlos García Alzate, Carlos Luis DoNascimiento, Francisco Antonio Villa Navarro, Jorge Enrique García Melo, Guido Herrera

Resultado de la investigación: Capítulo del libro/informe/acta de congresoCapítulorevisión exhaustiva

Resumen

Knowledge of the fish fauna of the Magdalena-Cauca basin is the most solid and extensively consolidated today, in contrast to the other hydrographic basins of the Colombian territory, a product of a research dynamic mostly focused on this region of the country, by becoming the main axis of economic development. Parallel, this last scenario has resulted also in a greater anthropic intervention of the basin and its biota. Nevertheless, significant information gaps persist in the taxonomic inventory of itself, as well as the geographical distribution of the species; and consequently, on patterns derived from wealth, endemism, and diversity. Presented here the list of native species valid for the Magdalena-Cauca, accompanied by an analysis of its geographical distribution, taking regionalization as a reference hydrographic proposed by IDEAM. I know recognize 233 species that correspond to 14.5% of the diversity of freshwater fish of Colombia, grouped into seven orders and 33 families. 68% of the species are endemic to Magdalena-Cauca and 75 species are restricted to a single sub-basin or section within it. The Middle Magdalena section is distinguished for gathering the greatest wealth and number of unique endemic species, while the Lower-Middle Cauca section was the most dissimilar. The orogenesis of the mountain ranges, marine incursions, and dispersal between watersheds, through catchment from headwaters, are the processes that have been recent postulates to explain this heterogeneous biogeographic pattern within the basin.
Título traducido de la contribuciónFish diversity of the Magdalena river basin, Colombia
Idioma originalEspañol
Título de la publicación alojadaPeces de la cuenca del río Magdalena, Colombia
Subtítulo de la publicación alojadadiversidad, conservación y uso sostenible
EditoresCarlos Lasso, Luz Jimenez-Segura
Lugar de publicaciónBogotá
Capítulo2
Páginas85-114
Número de páginas29
EdiciónXIX
ISBN (versión digital)978-958-5183-04-9
EstadoPublicada - 29 abr 2021

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