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原文連結
論文資訊
- 類型：已發表論文
- 日期：2012
摘要
McNamara and Dall (2011) identified novel relationships between 1) the abundance of a 物種 in different environments, 2) the temporal properties of environmental change, and 3) selection for or against dispersal. Here, the mathematics underlying these relationships in their two-environment model are investigated for arbitrary numbers of environments. A 族群 statistic, the fitness-abundance covariance, is introduced, which quantifies the property they describe. It is the covariance between growth rates and the excess abundance of the 族群 over what it would be without heterogeneous growth rates. Its value depends on the phase in the life cycle when the 族群 is censused, and the pre-dispersal and post-dispersal values differ as an example of Fisher's Fundamental Theorem. The fitness-abundance covari
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