Introducción al estudio de los gasterópodos (Mollusca) de la laguna de Montcortès (Pallars Sobirà, Cataluña, NE de la península ibérica)

Introduction to the study of gastropods (Mollusca) on the Montcortés lake (Pallars Sobirà, Catalonia, NE of the Iberian peninsula)

The check-list of 50 species of terrestrial gastro­pod and freshwater molluscs in the Montcortès lake (Catalonia, Spain) and its environs, pertaining to 24 different families, is shown. Thirty-three species are cited for the first time in the area of study. The unpublished data on their distribution and ecological requirements are contributed. The preliminary results indicate us that the communities of molluscs that accompany to the helofitic vegetation and the higrofits well are formed with elements of high faunistic and ecological interest. Simultaneously, some recommendations for the protection of the malacological fauna of the lake are commented. Key words: Molluscs, Gastropods, Karstic lake, Catalonian Pyrenees, Spain.