Spatial segregation and summer habitat use by alpine chamois (Rupicapra rupicapra) and mouflon (Ovis orientalis musimon) in the Dolomiti Bellunesi National Park, Italy

Abstract

Studies were undertaken on the spatial overlap and habitat selection of the introduced Mouflon and the autochthon Chamois population in the Dolomiti Bellunesi National Park (Eastern Italian Alps). Mouflon distribution within the Park showed a marked seasonal shift from winter (December-May) range (400-800 m a. s. I.) to the summer (June-November) range (1600-1800 m a. s. /J. Consequently, significant overlap with Chamois occurred only in summer. Therefore, spatial overlap and habitat selection were studied in more detail in the summer range of Mouflon. The results showed that the areas most intensively used by the two species were distinct. Both species avoided areas with rock outcrops and dense forests, Mouflon used Pinus mugo stands and scree much more than Chamois, and conversely Chamois used more alpine pastures and Larix decidua stands. The results therefore indicate that Chamois and Mouflon segregate spatially and use different resources.