Variability of Demographic Parameters in a Cyclic Population of the Bank Vole (Clethrionomys glareolus)

被引:0
作者
M. I. Cheprakov
机构
[1] Russian Academy of Sciences,Institute of Plant and Animal Ecology, Ural Branch
来源
Russian Journal of Ecology | 2018年 / 49卷
关键词
population cycle phases; demographic parameters; bank vole; dynamics of abundance; age structure;
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中图分类号
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摘要
Analysis of demographic parameters in a local bank vole population has shown that different relationships exist between them. The level of population abundance is directly correlated with the proportion of sexually mature juveniles, the length of the breeding season, and the age of overwintered individuals. The duration of the breeding season shows a delayed dependence on population abundance in the previous year. Variation in the average age of overwintered voles at different phases of the population cycle is characterized by a delayed dependence on the length of the breeding season in the previous year. Intrinsic factors generate the cyclic dynamics of parameters, while extrinsic factors can modify their dynamics.
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页码:343 / 348
页数:5
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