气候变化领域集成服务门户(CCPortal): Skewed distributions of lifetime reproductive success: beyond mean and variance

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DOI	10.1111/ele.13467
	Skewed distributions of lifetime reproductive success: beyond mean and variance
	Tuljapurkar S.; Zuo W.; Coulson T.; Horvitz C.; Gaillard J.-M.
发表日期	2020
ISSN	1461023X
英文摘要	Lifetime reproductive performance is quantified here by the LRS (lifetime reproductive success), the random number of offspring an individual produces over its lifetime. Many field studies find that distributions of LRS among individuals are non-normal, zero-inflated and highly skewed. These results beg the question, what is the distribution of LRS predicted by demographic models when the only source of randomness is demographic stochasticity? Here we present the first exact analysis of the probability distribution of LRS for species described by age + stage models; our analysis starts with estimated vital rates. We illustrate with three examples: the Hadza, human hunter-foragers (age-only), the evergreen tree Tsuga canadensis (stage-only) and Roe deer, Capreolus capreolus (age + stage). For each we obtain the exact distribution of LRS, but also calculate and discuss the first three moments. Our results point to important questions about how such LRS distributions affect natural selection, and life history evolution. © 2020 John Wiley & Sons Ltd/CNRS
英文关键词	Age + stage; evolution; life history; lifetime reproductive success
语种	英语
来源期刊	Ecology Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/120955
作者单位	Department of Biology, Stanford University, Stanford, CA 94305-5020, United States; Department of Zoology, University of Oxford, Oxford, OX1 3SZ, United Kingdom; Department of Biology, University of Miami, Coral Gables, FL 33124-0421, United States; Laboratoire de Biométrie et Biologie Evolutive, CNRS, UMR 5558, Université Lyon 1, Villeurbanne, F-69622, France
推荐引用方式 GB/T 7714	Tuljapurkar S.,Zuo W.,Coulson T.,et al. Skewed distributions of lifetime reproductive success: beyond mean and variance[J],2020.
APA	Tuljapurkar S.,Zuo W.,Coulson T.,Horvitz C.,&Gaillard J.-M..(2020).Skewed distributions of lifetime reproductive success: beyond mean and variance.Ecology Letters.
MLA	Tuljapurkar S.,et al."Skewed distributions of lifetime reproductive success: beyond mean and variance".Ecology Letters (2020).