Small mammal community composition within the major landscape divisions of Patagonia, southern Argentina

MONJEAU, ADRIAN; SIKES, ROBERT S.; BIRNEY, ELMER; GUTHMANN, NADIA; PHILLIPS, CARLETON J.

MASTOZOOLOGíA NEOTROPICAL

UNIDAD DE ZOOLOGÍA Y ECOLOGÍA ANIMAL, INSTITUTO ARGENTINO DE INVESTIGACIÓN DE LAS ZONAS ARIDAS, CRICYT, CONICET

Lugar: Mendoza; Año: 1997 vol. 4 p. 113 - 127

0327-9383

The relationships between small mammal community composition and the major landscape divisions in Patagonia are poorly understood. To address this issue we trapped rodents and marsupials at 14 localities across the breadth of southern Argentina. This transect included four of the five major biozones defined for Patagonia. Cluster analysis and non-metric multidimensional scaling were used to compare small mammal assemblages to two landscape classification schemes that have been proposed for this region. Localities formed four groups based on mammal species composition with each group matching closely one of the four megabiozones defined in the study area. Axes produced by the multidimensional scaling procedure were correlated with precipitation and elevation. Small mammal communities did not follow closely the finer subdivisions of vegetative types within the major biozones, such as the commonly recognized distinction between Monte and Patagonian vegetative regions.