气候变化领域集成服务门户(CCPortal): Mean growth rate when rare is not a reliable metric for persistence of species

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DOI	10.1111/ele.13430
	Mean growth rate when rare is not a reliable metric for persistence of species
	Pande J.; Fung T.; Chisholm R.; Shnerb N.M.
发表日期	2020
ISSN	1461023X
卷号	23 期号:2
英文摘要	The coexistence of many species within ecological communities poses a long-standing theoretical puzzle. Modern coexistence theory (MCT) and related techniques explore this phenomenon by examining the chance of a species population growing from rarity in the presence of all other species. The mean growth rate when rare, (Formula presented.), is used in MCT as a metric that measures persistence properties (like invasibility or time to extinction) of a population. Here we critique this reliance on (Formula presented.) and show that it fails to capture the effect of temporal random abundance variations on persistence properties. The problem becomes particularly severe when an increase in the amplitude of stochastic temporal environmental variations leads to an increase in (Formula presented.), since at the same time it enhances random abundance fluctuations and the two effects are inherently intertwined. In this case, the chance of invasion and the mean extinction time of a population may even go down as (Formula presented.) increases. © 2019 John Wiley & Sons Ltd/CNRS
英文关键词	Coexistence; environmental stochasticity; invasibility; lottery model; mean growth rate; mean time to extinction; modern coexistence theory; persistence
语种	英语
scopus关键词	biological model; population dynamics; Models, Biological; Population Dynamics
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/120949
作者单位	Department of Physics, Bar-Ilan University, Ramat Gan, 52900, Israel; Department of Biological Sciences, National University of Singapore, Singapore, 117543, Singapore
推荐引用方式 GB/T 7714	Pande J.,Fung T.,Chisholm R.,et al. Mean growth rate when rare is not a reliable metric for persistence of species[J],2020,23(2).
APA	Pande J.,Fung T.,Chisholm R.,&Shnerb N.M..(2020).Mean growth rate when rare is not a reliable metric for persistence of species.Ecology Letters,23(2).
MLA	Pande J.,et al."Mean growth rate when rare is not a reliable metric for persistence of species".Ecology Letters 23.2(2020).