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Biogeografia de los Anfibios y Reptiles de Galicia, un Ensayo de Sintesis

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image of Amphibia-Reptilia

In this work the actual state of knowledge on biogeography of Amphibians and Reptiles from Galicia is exposed in a synthetical way based upon distributional data gathered during the last 10 years.The geographic distribution of species and communities on latitudinal and altitudinal gradients indicates that climate and biotope are more important factors than latitude or altitude over sea.The presence of relict populations of eurosiberian taxa and the geographic distribution of endemism point to the importance of climatic alterations during the Quaternary Age (Glaciarism). Thus, the eurosiberian taxa were driven towards Galicia following both the Cornice and the Cantabrian Chain as a mountains, giving rise to sub-especiation or speciation in allopatry of some endemisms.As the present data are poor we must consider our conclusions as a first hypothesis.En el presente trabajo se expone de forma sintética el estado actual de concocimientos de la biogeografia de Anfibios y Reptiles de Galicia, basándonos en una labor de prospección realizada en los último 10 años.Distribucion geográfica de especies y comunidades en gradientes latitudinales y altitudinales conduce a considerar la importancia de los factores clima y biotopo, más que la latitud o altitud sobre el mar.Presencia de problaciones relictas de taxones eurosiberianos y distribucion geográfica de endemismos señalan la importancia de las alteraciones climáticas del Cuaternario (Glaciarismo) ; impulsando el avance hacia Galicia de taxones eurosiberianos siguiendo la cornisa y cordillera Cantabrica y propiciando la subespeciacion o especiacion en alopatria de ciertos endemismos.A la espera de una base más amplia, debemos considerar nuestras conclusiones como una hipótesis de p artida.

Affiliations: 1: Departamento de Zoología, Facultad de Biología


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