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Roe Deer Survival Patterns: A Comparative Analysis of Contrasting Populations

1993; Wiley; Volume: 62; Issue: 4 Linguagem: Inglês

10.2307/5396

1365-2656

Jean‐Michel Gaillard, Daniel Delorme, Boutin Jean-Marie, Guy Van Laere, B. Boisaubert, Roger Pradel,

Ecology and biodiversity studies

From two enclosed populations monitored for 13 and 11 years, time- and age-specific survival rates of roe deer were estimated in relation to age and study site by recent capture-mark-recapture methods. The two populations were very different. Roe deer in Trois Fontaines, a 1360 ha reserve in east France, faced severe winters. The size of this highly productive population was roughly constant during the study period. Conversely, in Chize, a 2660 ha reserve in west France with mild winters, roe deer showed density dependence in reproduction and body weight. As a general rule, females survived better than males, the survival rates of prime-age adults were the highest, and survival decreased after 7 years of age. Only the severe winters affected markedly the survivorship of roe deer