DOI: 10.1111/gcb.12770
论文题名: Plasticity in functional traits in the context of climate change: a case study of the subalpine forb Boechera stricta (Brassicaceae)
作者: Anderson J.T. ; Gezon Z.J.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2015
卷: 21, 期: 4 起始页码: 1689
结束页码: 1703
语种: 英语
英文关键词: Boechera stricta
; Ecophysiology
; Elevation gradient
; Flowering phenology
; Functional traits
; Phenotypic plasticity
; Snow melt
; Snow removal experiment
; Subalpine meadow
Scopus关键词: adaptation
; angiosperm
; climate change
; ecophysiology
; environmental gradient
; flowering
; life history trait
; meadow
; phenology
; phenotypic plasticity
; snowmelt
; subalpine environment
; Boechera stricta
; Brassicaceae
; snow
; adaptation
; altitude
; anatomy and histology
; Brassicaceae
; climate change
; Colorado
; genetic variation
; genetics
; growth, development and aging
; phenotype
; physiology
; reproduction
; season
; Adaptation, Physiological
; Altitude
; Brassicaceae
; Climate Change
; Colorado
; Genetic Variation
; Phenotype
; Reproduction
; Seasons
; Snow
英文摘要: Environmental variation often induces shifts in functional traits, yet we know little about whether plasticity will reduce extinction risks under climate change. As climate change proceeds, phenotypic plasticity could enable species with limited dispersal capacity to persist in situ, and migrating populations of other species to establish in new sites at higher elevations or latitudes. Alternatively, climate change could induce maladaptive plasticity, reducing fitness, and potentially stalling adaptation and migration. Here, we quantified plasticity in life history, foliar morphology, and ecophysiology in Boechera stricta (Brassicaceae), a perennial forb native to the Rocky Mountains. In this region, warming winters are reducing snowpack and warming springs are advancing the timing of snow melt. We hypothesized that traits that were historically advantageous in hot and dry, low-elevation locations will be favored at higher elevation sites due to climate change. To test this hypothesis, we quantified trait variation in natural populations across an elevational gradient. We then estimated plasticity and genetic variation in common gardens at two elevations. Finally, we tested whether climatic manipulations induce plasticity, with the prediction that plants exposed to early snow removal would resemble individuals from lower elevation populations. In natural populations, foliar morphology and ecophysiology varied with elevation in the predicted directions. In the common gardens, trait plasticity was generally concordant with phenotypic clines from the natural populations. Experimental snow removal advanced flowering phenology by 7 days, which is similar in magnitude to flowering time shifts over 2-3 decades of climate change. Therefore, snow manipulations in this system can be used to predict eco-evolutionary responses to global change. Snow removal also altered foliar morphology, but in unexpected ways. Extensive plasticity could buffer against immediate fitness declines due to changing climates. © 2014 John Wiley & Sons Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61637
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Biological Sciences, University of South Carolina, Columbia, SC, United States; Rocky Mountain Biological Laboratory, PO Box 519, Crested Butte, CO, United States; Department of Biological Sciences, Dartmouth College, 78 College St, Hanover, NH, United States; Department of Genetics and Odum School of Ecology, University of Georgia, Athens, GA, United States
Recommended Citation:
Anderson J.T.,Gezon Z.J.. Plasticity in functional traits in the context of climate change: a case study of the subalpine forb Boechera stricta (Brassicaceae)[J]. Global Change Biology,2015-01-01,21(4)