DOI: 10.1111/gcb.12199
论文题名: Clinal adaptation and adaptive plasticity in Artemisia californica: Implications for the response of a foundation species to predicted climate change
作者: Pratt J.D. ; Mooney K.A.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2013
卷: 19, 期: 8 起始页码: 2454
结束页码: 2466
语种: 英语
英文关键词: Artemisia
; Clinal adaptation
; Common garden
; Environmental variability
; Latitudinal gradients
; Phenotypic plasticity
; Precipitation
; Resource gradients
Scopus关键词: rain
; adaptation
; annual variation
; climate change
; global change
; latitudinal gradient
; phenotypic plasticity
; precipitation (climatology)
; shrub
; acclimatization
; Artemisia
; article
; climate change
; clinal adaptation
; common garden
; environmental variability
; genetics
; growth, development and aging
; latitudinal gradients
; phenotype
; phenotypic plasticity
; physiology
; precipitation
; resource gradients
; United States
; artemisia
; clinal adaptation
; common garden
; environmental variability
; latitudinal gradients
; phenotypic plasticity
; precipitation
; resource gradients
; Acclimatization
; Artemisia
; California
; Climate Change
; Phenotype
; Rain
; Artemisia
; Artemisia californica
英文摘要: Local adaptation and plasticity pose significant obstacles to predicting plant responses to future climates. Although local adaptation and plasticity in plant functional traits have been documented for many species, less is known about population-level variation in plasticity and whether such variation is driven by adaptation to environmental variation. We examined clinal variation in traits and performance - and plastic responses to environmental change - for the shrub Artemisia californica along a 700 km gradient characterized (from south to north) by a fourfold increase in precipitation and a 61% decrease in interannual precipitation variation. Plants cloned from five populations along this gradient were grown for 3 years in treatments approximating the precipitation regimes of the north and south range margins. Most traits varying among populations did so clinally; northern populations (vs. southern) had higher water-use efficiencies and lower growth rates, C : N ratios and terpene concentrations. Notably, there was variation in plasticity for plant performance that was strongly correlated with source site interannual precipitation variability. The high-precipitation treatment (vs. low) increased growth and flower production more for plants from southern populations (181% and 279%, respectively) than northern populations (47% and 20%, respectively). Overall, precipitation variability at population source sites predicted 86% and 99% of variation in plasticity in growth and flowering, respectively. These striking, clinal patterns in plant traits and plasticity are indicative of adaptation to both the mean and variability of environmental conditions. Furthermore, our analysis of long-term coastal climate data in turn indicates an increase in interannual precipitation variation consistent with most global change models and, unexpectedly, this increased variation is especially pronounced at historically stable, northern sites. Our findings demonstrate the critical need to integrate fundamental evolutionary processes into global change models, as contemporary patterns of adaptation to environmental clines will mediate future plant responses to projected climate change. © 2013 John Wiley & Sons Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/62366
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Ecology and Evolutionary Biology, University of California, 321 Steinhaus Hall, Irvine, CA 92697-2525, United States
Recommended Citation:
Pratt J.D.,Mooney K.A.. Clinal adaptation and adaptive plasticity in Artemisia californica: Implications for the response of a foundation species to predicted climate change[J]. Global Change Biology,2013-01-01,19(8)