Los reptiles del Prepirineo oriental (Cadí-Moixeró y La Cerdaña) y biogeografía de la herpetofauna de la zona

Resumen

The Reptiles of the Eastern Pre-Pyrenees (Cadí-Moixeró and La Cerdaña) and biogeography of the herpetofauna of the area
The eastern Pre-Pyrenees were prospected using 5 x 5 UTM square from 1974 to 1986. Nineteen reptiles were found. Their geographical and altimetric distribution is given, and its corology discussed taking into account other data from the Pyrenees. The topoclimatical effects and the particular disposition of the mountain range, are the key factors to understand the corology and the altimetric distribution of herpetofauna. The study area shows mediterranean elements as well as Pyrenean and mid-european ones. Cerdaña basin acts as a bndge between the herpetofauna from France and the more meridional species from Spain. The Segre nver divides the Pre-Pyrenees in two big biogeographical areas: the eastem one very close to axial Pyrenees and characterized by boreal and the western one with a more mediterranean faunistic elements.