Habitat preferences of alpine marmots, Marmota marmota
1994; NRC Research Press; Volume: 72; Issue: 12 Linguagem: Inglês
10.1139/z94-293
ISSN1480-3283
AutoresDominique Allainé, Isabelle Rodrigue, Michel Berré, Raymond Ramousse,
Tópico(s)Ecology and Vegetation Dynamics Studies
ResumoHabitat preferences of alpine marmots, Marmota marmota, were investigated at two sites in the French Alps. The use of a logistic-linear model allowed us to model the probability of marmot settlement in different ecological situations. Marmots preferred sites with a southern or eastern aspect (where snow melts relatively early), intermediate slopes, moderate plant cover, and a low level of human disturbance, and they seemed to select their habitat according to a nested system. To test if habitat quality affected individual fitness, we investigated the effects of sun exposure and two home-range characteristics on litter size at emergence, frequency of female reproduction, and retention of subordinates. Sun exposure and home-range size are two major components of home-range quality that may affect individual fitness.
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