Bird faunas of the humid montane forests of Mesoamerica: biogeographic patterns and priorities for conservation
- 1 September 1995
- journal article
- research article
- Published by Cambridge University Press (CUP) in Bird Conservation International
- Vol. 5 (2-3) , 251-277
- https://doi.org/10.1017/s0959270900001039
Abstract
Summary The distribution of 335 species of birds in 33 islands of humid montane forest in Mesoamerica is summarized, and patterns of distribution, diversity and endemism are analysed.The montane forests of Costa Rica and western Panama far exceed other habitat islands considered for species-richness, richness of species endemic to Mesoamerica, and richness of species ecologically restricted to humid montane forests. Other regions, such as the Sierra Madre del Sur of Guerrero and Oaxaca, the Los Tuxtlas region of southern Veracruz and the mountains of Chiapas and Guatemala, also hold rich and endemic avifaunas. Based on patterns of similarity of avifaunas, the region can be divided into seven regions holding distinctive avifaunas (Costa Rica and western Panama; northern Central America and northern Chiapas; southern Chiapas; eastern Mexico north of the Isthmus of Tehuantepec; Sierra Madre del Sur; interior Oaxaca; and Transvolcanic Belt and Sierra Madre Occidental), which serve as useful guides for the setting of priorities for conservation action. Se resumen las distribuciones de 335 especies de aves en 33 islas de bosque húmedo de montaña en Mesoamerica, y se analizan patrones de distributión, diversidad y endemismo. Los bosques montanos de Costa Rica y del oeste de Panamá tienen la más alta riqueza de especies, riqueza de especies endémicas a Mesoamerica, y riqueza de especies ecologicamente restringidas a bosque húmedo de montana. Otras regiones, tales como la Sierra Madre del Sur de Guerrero y Oaxaca, la región de Los Tuxtlas y las montanas de Chiapas y Guatemala, también tienen avifaunas ricas en especies y en endémicas. Basado en patrones de similitud de avifaunas, se puede dividir Mesoamerica en siete regiones que tienen avifaunas distintas (Costa Rica y el oeste de Panamá; el norte de Centroamérica y el norte de Chiapas; el sur de Chiapas; el este de México; la Sierra Madre del Sur; el interior de Oaxaca; y el Eje Neovolcánico y la Sierra Madre Occidental), las cuales pueden servir como guias en el establecimiento de prioridades para la conservatión.Keywords
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