作者: Georges Gonzalez , Jean-Paul Crampe
DOI: 10.1139/Z01-173
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摘要: We considered variation in mortality over 8 years a protected population of isards (Pyrenean chamois; Rupicapra pyrenaica) within the Pyrenean National Park using monthly systematic skull collection. After testing stationary-type pattern estimates living population, we (i) analysed composition sample dead animals terms age and sex; (ii) investigated temporal patterns their relationship with winter severity; (iii) tested for sexual differences rates this weakly sexually dimorphic species. Of 588 found from natural causes, 114 were kids (19.4%). No statistical existed according to sex (the ratio males females was 1/1.13). Age at death did not differ significantly between sexes or among years. A positive severity (expressed as cumulative snowfall) both adults. During mild winters, mortali...