%0 Journal Article
%T Regionalizaci¨®n biogeogr¨¢fica de la mastofauna de los bosques tropicales perennifolios de Mesoam¨¦rica Biogeographic regionalization of the mammals of tropical evergreen forests in Mesoamerica
%A H¨¦ctor C. Olgu¨ªn-Monroy
%A Cirene Guti¨¦rrez-Blando
%A C¨¦sar A. R¨ªos-Mu£¿oz
%A Livia Le¨®n-Paniagua
%J Revista de Biolog¨ªa Tropical
%D 2013
%I Universidad de Costa Rica
%X Este trabajo presenta una propuesta de regionalizaci¨®n biogeogr¨¢fica de los bosques tropicales perennifolios de Mesoam¨¦rica, resultado de un an¨¢lisis de parsimonia de endemismos (PAE), utilizando modelos de nicho ecol¨®gico (GARP) con mam¨ªferos terrestres, usando 41 527 registros para las 233 especies de mam¨ªferos reconocidas. La regionalizaci¨®n propuesta muestra que los bosques tropicales perennifolios de Mesoam¨¦rica se dividen por el istmo de Tehuantepec en Oaxaca en: a) un grupo septentrional que comprende la Sierra Madre de Chiapas-Guatemala y la Pen¨ªnsula de Yucat¨¢n, y b) un grupo austral, que contiene la vertiente pac¨ªfica hacia el sur incluyendo Centroam¨¦rica. Adem¨¢s se encontr¨® congruencia con trabajos filogen¨¦ticos, lo que sugiere una historia biogeogr¨¢fica com¨²n. Mesoamerica is a biologically complex zone that expands from Southern Mexico to extreme Northern Colombia. The biogeographical patterns and relationships of the mammalian fauna associated to the Mesoamerican Tropical Evergreen Forest (MTEF) are poorly understood, in spite of the wide distribution of this kind of habitat in the region. We compiled a complete georeferenced database of mammalian species distributed in the MTEF of specimens from museum collections and scientific literature. This database was used to create potential distribution maps through the use of environmental niche models (ENMs) by using the Genetic Algorithm for Rule-Set Production (GARP) using 22 climatic and topographic layers. Each map was used as a representation of the geographic distribution of the species and all available maps were summed to obtain general patterns of species richness in the region. Also, the maps were used to construct a presence-absence matrix in a grid of squares of 0.5 degrees of side, that was analyzed in a Parsimony Analysis of Endemicity (PAE), which resulted in a hypothesis of the biogeographic scheme in the region. We compiled a total of 41 527 records of 233 species of mammals associated to the MTEF. The maximum concentration of species richness (104-138 species) is located in the areas around the isthmus of Tehuantepec, Northeastern Chiapas-Western Guatemala, Western Honduras, Central Nicaragua to Northwestern Costa Rica and Western Panama. The proposed regionalization indicates that mammalian faunas associated to these forests are composed of two main groups that are divided by the isthmus of Tehuantepec in Oaxaca in: a) a Northern group that includes Sierra Madre of Chiapas-Guatemala and Yucatan Peninsula; and b) an austral group, that contains the Pacific slope of Chiapas towa
%K mam¨ªferos
%K Mesoam¨¦rica
%K regionalizaci¨®n
%K an¨¢lisis de parsimonia de endemismos
%K GARP
%K mammals
%K Mesoamerica
%K regionalization
%K parsimony analysis of endemicity
%K GARP
%U http://www.scielo.sa.cr/scielo.php?script=sci_arttext&pid=S0034-77442013000300034