Abstract

ESCALANTE, Tania; ESPINOSA, David  and  MORRONE, Juan J.. Patrones de distribución geográfica de los mamíferos terrestres de México. Acta Zool. Mex [online]. 2002, n.87, pp.47-65. ISSN 2448-8445.

Distributional data of 424 species of Mexican mammals are described, with information obtained from two databases, containing 56,859 records of specimens housed in biological collections as from records from literature. The number of records of specimens, number of collection sites, and the species richness, were represented in maps by geometric classes, for the 32 Mexican States, a system of 47 ecoregions, and grids of half and one grade of latitude-longitude. The largest number of records and collection sites is concentrated at the center of the country, while the areas with more collecting gaps are the Baja California and Yucatan peninsulas, as well as the north, especially the Mexican Plateau. As for the number of species, the richest areas are located in the center of the country, in Chiapas, and in two fringes along the oriental and western coasts. The estimated species number for the country with Chao2, is approximately 450 species.

Keywords : Mammals; databases; geographical distribution; species richness; Mexico.

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