DOI: 10.1111/gcb.13883
Scopus记录号: 2-s2.0-85030176345
论文题名: Role of population genetics in guiding ecological responses to climate
作者: Rehfeldt G.E. ; Leites L.P. ; Joyce D.G. ; Weiskittel A.R.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2018
卷: 24, 期: 2 起始页码: 858
结束页码: 868
语种: 英语
英文关键词: climate change responses
; ecological genetics
; ecological optimum
; genetic differentiation
; genotype-environment interactions
; growth potential-cold hardiness tradeoff
; physiological optimum
Scopus关键词: climate change
; climate effect
; coniferous tree
; genotype-environment interaction
; physiology
; population genetics
; population growth
; winter
; Pinus contorta
英文摘要: Population responses to climate were assessed using 3–7 years height growth data gathered for 266 populations growing in 12 common gardens established in the 1980s as part of five disparate studies of Pinus contorta var. latifolia. Responses are interpreted according to three concepts: the ecological optimum, the climate where a population is competitively exclusive and in which, therefore, it occurs naturally; the physiological optimum, the climate where a population grows best but is most often competitively excluded; and growth potential, the innate capacity for growth at the physiological optimum. Statistical analyses identified winter cold, measured by the square root of negative degree-days calculated from the daily minimum temperature (MINDD01/2), as the climatic effect most closely related to population growth potential; the colder the winter inhabited by a population, the lower its growth potential, a relationship presumably molded by natural selection. By splitting the data into groups based on population MINDD01/2 and using a function suited to skewed normal distributions, regressions were developed for predicting growth from the distance in climate space (MINDD01/2) populations had been transferred from their native location to a planting site. The regressions were skewed, showing that the ecological optimum of most populations is colder than the physiological optimum and that the discrepancy between the two increases as the ecological optimum becomes colder. Response to climate change is dependent on innate growth potential and the discrepancy between the two optima and, therefore, is population-specific, developing out of genotype-environment interactions. Response to warming in the short-term can be either positive or negative, but long term responses will be negative for all populations, with the timing of the demise dependent on the amount of skew. The results pertain to physiological modeling, species distribution models, and climate-change adaptation strategies. © 2017 John Wiley & Sons Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/110532
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Moscow, ID, United States; Department of Ecosystem Science and Management, The Pennsylvania State University, University Park, PA, United States; Sault Ste. Marie, ON, Canada; School of Forest Resources, University of Maine, Orono, ME, United States
Recommended Citation:
Rehfeldt G.E.,Leites L.P.,Joyce D.G.,et al. Role of population genetics in guiding ecological responses to climate[J]. Global Change Biology,2018-01-01,24(2)