气候变化领域集成服务门户(CCPortal): Demystifying individual heterogeneity

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DOI	10.1111/ele.13843
	Demystifying individual heterogeneity
	Forsythe A.B.; Day T.; Nelson W.A.
发表日期	2021
ISSN	1461023X
英文摘要	Among-individual variation in vital rates, such as mortality and birth rates, exists in nearly all populations. Recent studies suggest that this individual heterogeneity produces substantial life-history and fitness differences among individuals, which in turn scale up to influence population dynamics. However, our ability to understand the consequences of individual heterogeneity is limited by inconsistencies across conceptual frameworks in the field. Studies of individual heterogeneity remain filled with contradicting and ambiguous terminology that introduces risks of misunderstandings, conflicting models and unreliable conclusions. Here, we synthesise the existing literature into a single and comparatively straightforward framework with explicit terminology and definitions. This work introduces a distinction between potential vital rates and realised vital rates to develop a coherent framework that maps directly onto mathematical models of individual heterogeneity. We suggest the terms “fixed condition” and “dynamic condition” be used to distinguish potential vital rates that are permanent from those that can change throughout an individual's life. To illustrate, we connect the framework to quantitative genetics models and to common classes of statistical models used to infer individual heterogeneity. We also develop a population projection matrix model that provides an example of how our definitions are translated into precise quantitative terms. © 2021 John Wiley & Sons Ltd.
关键词	dynamic condition fixed condition individual heterogeneity individual stochasticity life-history theory population dynamics vital rates
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/204388
作者单位	Department of Biology, Biosciences Complex, Queen’s University, Kingston, ON, Canada; Department of Mathematics and Statistics, Queen’s University, Kingston, ON, Canada
推荐引用方式 GB/T 7714	Forsythe A.B.,Day T.,Nelson W.A.. Demystifying individual heterogeneity[J],2021.
APA	Forsythe A.B.,Day T.,&Nelson W.A..(2021).Demystifying individual heterogeneity.Ecology Letters.
MLA	Forsythe A.B.,et al."Demystifying individual heterogeneity".Ecology Letters (2021).