气候变化领域集成服务门户(CCPortal): Size-by-environment interactions: a neglected dimension of species' responses to environmental variation

CCPortal

DOI	10.1111/ele.13154
	Size-by-environment interactions: a neglected dimension of species' responses to environmental variation
	Tredennick A.T.; Teller B.; Adler P.B.; Hooker G.; Ellner S.P.
发表日期	2018
ISSN	1461023X
卷号	21 期号:12
英文摘要	In both plant and animal systems, size can determine whether an individual survives and grows under different environmental conditions. However, it is unclear whether and when size-dependent responses to exogenous environmental fluctuations affect population dynamics. Size-by-environment interactions create pathways for environmental fluctuations to influence population dynamics by allowing for negative covariation between sizes within vital rates (e.g. small and large individuals have negatively covarying survival rates) and/or size-dependent variability in a vital rate (e.g. survival of large individuals varies less than small individuals through time). Whether these phenomena affect population dynamics depends on how they are mediated by elasticities (they must affect the sizes and vital rates that matter) and their projected impacts will depend on model functional form (the impact of reduced variance depends on the relationship between the environment and vital rate). We demonstrate these ideas with an analysis of fifteen species from five semiarid plant communities. We find that size-by-environment interactions are common but do not impact long-term population dynamics. Size-by-environment interactions may yet be important for other species. Our approach can be applied to species in other ecosystems to determine if and how size-by-environment interactions allow them to cope with, or exploit, fluctuating environments. © 2018 John Wiley & Sons Ltd/CNRS
英文关键词	demographic buffering; demography; environmental variability; individual heterogeneity; individual size; integral projection model; population model
语种	英语
scopus关键词	demography; environmental conditions; environmental gradient; plant community; population dynamics; population modeling; semiarid region; Animalia; animal; ecosystem; plant; population dynamics; Animals; Ecosystem; Plants; 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/121215
作者单位	Department of Wildland Resources and the Ecology Center, Utah State University, Logan, UT, United States; Department of Biology, Pennsylvania State University, University Park, PA, United States; Department of Biological Statistics and Computational Biology, Cornell University, Ithaca, NY, United States; Department of Ecology and Evolutionary Biology, Cornell University, Ithaca, NY, United States
推荐引用方式 GB/T 7714	Tredennick A.T.,Teller B.,Adler P.B.,et al. Size-by-environment interactions: a neglected dimension of species' responses to environmental variation[J],2018,21(12).
APA	Tredennick A.T.,Teller B.,Adler P.B.,Hooker G.,&Ellner S.P..(2018).Size-by-environment interactions: a neglected dimension of species' responses to environmental variation.Ecology Letters,21(12).
MLA	Tredennick A.T.,et al."Size-by-environment interactions: a neglected dimension of species' responses to environmental variation".Ecology Letters 21.12(2018).