DOI: 10.1111/gcb.12919
论文题名: Temperature alone does not explain phenological variation of diverse temperate plants under experimental warming
作者: Marchin R.M. ; Salk C.F. ; Hoffmann W.A. ; Dunn R.R.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2015
卷: 21, 期: 8 起始页码: 3138
结束页码: 3151
语种: 英语
英文关键词: Budburst
; Climate change
; Flowering
; Growing season length
; Leaf senescence
; Phenology
; Southeastern United States
; Temperature sensitivity
; Warming experiment
Scopus关键词: budburst
; climate change
; climate effect
; flowering
; global warming
; leaf
; phenology
; plant
; senescence
; temperature effect
; Duke Forest
; North Carolina
; United States
; Quercus alba
; anatomy and histology
; climate change
; flower
; physiology
; plant leaf
; plant physiology
; reproduction
; season
; temperature
; xylem
; Climate Change
; Flowers
; Plant Leaves
; Plant Physiological Processes
; Reproduction
; Seasons
; Temperature
; Xylem
英文摘要: Anthropogenic climate change has altered temperate forest phenology, but how these trends will play out in the future is controversial. We measured the effect of experimental warming of 0.6-5.0 °C on the phenology of a diverse suite of 11 plant species in the deciduous forest understory (Duke Forest, North Carolina, USA) in a relatively warm year (2011) and a colder year (2013). Our primary goal was to dissect how temperature affects timing of spring budburst, flowering, and autumn leaf coloring for functional groups with different growth habits, phenological niches, and xylem anatomy. Warming advanced budburst of six deciduous woody species by 5-15 days and delayed leaf coloring by 18-21 days, resulting in an extension of the growing season by as much as 20-29 days. Spring temperature accumulation was strongly correlated with budburst date, but temperature alone cannot explain the diverse budburst responses observed among plant functional types. Ring-porous trees showed a consistent temperature response pattern across years, suggesting these species are sensitive to photoperiod. Conversely, diffuse-porous species responded differently between years, suggesting winter chilling may be more important in regulating budburst. Budburst of the ring-porous Quercus alba responded nonlinearly to warming, suggesting evolutionary constraints may limit changes in phenology, and therefore productivity, in the future. Warming caused a divergence in flowering times among species in the forest community, resulting in a longer flowering season by 10-16 days. Temperature was a good predictor of flowering for only four of the seven species studied here. Observations of interannual temperature variability overpredicted flowering responses in spring-blooming species, relative to our warming experiment, and did not consistently predict even the direction of flowering shifts. Experiments that push temperatures beyond historic variation are indispensable for improving predictions of future changes in phenology. © 2015 John Wiley & Sons Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61615
Appears in Collections: 影响、适应和脆弱性
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作者单位: Centre for Carbon, Water and Food, University of Sydney, Camden, NSW, Australia; Department of Plant Biology, North Carolina State University, Raleigh, NC, United States; International Institute for Applied Systems Analysis, Ecosystem Services and Management Program, Laxenburg, Austria; Southern Swedish Forest Research Center, Swedish University of Agricultural Sciences, Alnarp, Sweden; Department of Biological Sciences and Keck Center for Behavioral Biology, North Carolina State University, Raleigh, NC, United States
Recommended Citation:
Marchin R.M.,Salk C.F.,Hoffmann W.A.,et al. Temperature alone does not explain phenological variation of diverse temperate plants under experimental warming[J]. Global Change Biology,2015-01-01,21(8)