Una aproximación a la determinación e la riqueza y abundancia de micromamíferos en la florida, san luis, argentina.

BRAVO BELEN; CARRIZO CELINA; CISTERNA GABRIELA; GRIOTTI MARIANA; ANTONIO MANGIONE; MARTINEZ SANTIAGO; OCHOA CECILIA; RIVADENEIRA FEDERICO; RIVERO MEGA SOLEDAD; TORRES LAURA

San Luis

Jornada; Sociedad de Biologia de Cuyo; 2014

SBC y UNSL

el trabajo esta en prensa. Todavia no es publicado el resumen de Biocell La Florida is located 50 km to the northeast of San Luis city (Coord. 33°07′00″S; 66°10′00″O). It corresponds to the Chaco Seco phytogeographical region, with a pronounced semiarid, seasonal climate. The small mammals fauna is very diverse, although it has been poorly studied at the local level. We studied the small mammals of the Campsite of the Universidad Nacional de San Luis (UNSL), during 2011, 2013 and 2014. Activities took place as part of a practical experience developed in the subject Population Ecology, for students of the UNSL. We used Sherman traps, distributed in transects and grids. The capture effort was 300 traps-night (2011 and 2014) and 160 traps-night (in 2013). Individuals were identified, classified by sex and released. Richness, diversity (at the genus level), relative abundance and sex proportions were estimated. We compared the data collected in different environments of the camping, relating the mammal comunities to microhabitat descriptions (vegetation cover and soil type). We were able to determine seven species of small mammals, almost 30% of the total cited for San Luis province. We registered the presence of Calomys musculinus, C. laucha, Calomys sp. Graomys griseoflavus, Thyllamys pallidior and Phyllotis sp., that hadn´t been cited for this locality before. C. musculinus was the species found in the greatest proportion (0.58 relative abundance). We assessed possible differences in microhabitat caracteristics of sites with and without capture, however Student test showed no significant difference in between them. We also designed maps of spacial distribution of species found in the different environments studied. This study is an approach for assessing the state of small mammal communities in San Luis and demonstrates the importance of the study area in terms of biodiversity.