DOI: 10.1111/ele.12505
Scopus记录号: 2-s2.0-84943660135
论文题名: Demographic compensation among populations: What is it, how does it arise and what are its implications?
作者: Villellas J. ; Doak D.F. ; García M.B. ; Morris W.F.
刊名: Ecology Letters
ISSN: 1461023X
EISSN: 1461-0248
出版年: 2015
卷: 18, 期: 11 起始页码: 1139
结束页码: 1152
语种: 英语
英文关键词: Demographic compensation
; Environmental gradient
; Geographical distribution
; Global climate change
; Life-history trade-off
; Negative correlations
; Population growth rate
; Range limit
; Sensitivity
; Vital rates
Scopus关键词: climate change
; compensation
; demography
; environmental gradient
; geographical distribution
; global change
; growth rate
; life history trait
; population growth
; range expansion
; survival
; trend analysis
英文摘要: Most species are exposed to significant environmental gradients across their ranges, but vital rates (survival, growth, reproduction and recruitment) need not respond in the same direction to those gradients. Opposing vital rate trends across environments, a phenomenon that has been loosely called 'demographic compensation', may allow species to occupy larger geographical ranges and alter their responses to climate change. Yet the term has never been precisely defined, nor has its existence or strength been assessed for multiple species. Here, we provide a rigorous definition, and use it to develop a strong test for demographic compensation. By applying the test to data from 26 published, multi-population demographic studies of plants, we show that demographic compensation commonly occurs. We also investigate the mechanisms by which this phenomenon arises by assessing which demographic processes and life stages are most often involved. In addition, we quantify the effect of demographic compensation on variation in population growth rates across environmental gradients, a potentially important determinant of the size of a species' geographical range. Finally, we discuss the implications of demographic compensation for the responses of single populations and species' ranges to temporal environmental variation and to ongoing environmental trends, e.g. due to climate change. © 2015 John Wiley & Sons Ltd/CNRS. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/107845
Appears in Collections: 气候减缓与适应
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作者单位: Department of Ecology and Genetics, Uppsala University, Uppsala, Sweden; University of Colorado Boulder, Boulder, CO, United States; Pyrenean Institute of Ecology (IPE-CSIC), Apdo. 13034, Zaragoza, Spain; Department of Biology, Duke University, Box 90338, Durham, NC, United States
Recommended Citation:
Villellas J.,Doak D.F.,García M.B.,et al. Demographic compensation among populations: What is it, how does it arise and what are its implications?[J]. Ecology Letters,2015-01-01,18(11)