DOI: 10.1111/gcb.12568
论文题名: Predicted responses of arctic and alpine ecosystems to altered seasonality under climate change
作者: Ernakovich J.G. ; Hopping K.A. ; Berdanier A.B. ; Simpson R.T. ; Kachergis E.J. ; Steltzer H. ; Wallenstein M.D.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2014
卷: 20, 期: 10 起始页码: 3256
结束页码: 3269
语种: 英语
英文关键词: C cycle
; Microbial activity
; N mineralization
; NDVI
; Phenology
; Snowpack
; Trophic interactions
; Tundra
Scopus关键词: alpine environment
; arctic environment
; carbon cycle
; climate change
; ecosystem response
; microbial activity
; NDVI
; Northern Hemisphere
; phenology
; seasonality
; snowpack
; trophic interaction
; tundra
; Arctic
; snow
; Arctic
; climate change
; ecosystem
; plant physiology
; season
; temperature
; tundra
; Arctic Regions
; Climate Change
; Ecosystem
; Plant Physiological Phenomena
; Seasons
; Snow
; Temperature
; Tundra
英文摘要: Global climate change is already having significant impacts on arctic and alpine ecosystems, and ongoing increases in temperature and altered precipitation patterns will affect the strong seasonal patterns that characterize these temperature-limited systems. The length of the potential growing season in these tundra environments is increasing due to warmer temperatures and earlier spring snow melt. Here, we compare current and projected climate and ecological data from 20 Northern Hemisphere sites to identify how seasonal changes in the physical environment due to climate change will alter the seasonality of arctic and alpine ecosystems. We find that although arctic and alpine ecosystems appear similar under historical climate conditions, climate change will lead to divergent responses, particularly in the spring and fall shoulder seasons. As seasonality changes in the Arctic, plants will advance the timing of spring phenological events, which could increase plant nutrient uptake, production, and ecosystem carbon (C) gain. In alpine regions, photoperiod will constrain spring plant phenology, limiting the extent to which the growing season can lengthen, especially if decreased water availability from earlier snow melt and warmer summer temperatures lead to earlier senescence. The result could be a shorter growing season with decreased production and increased nutrient loss. These contrasting alpine and arctic ecosystem responses will have cascading effects on ecosystems, affecting community structure, biotic interactions, and biogeochemistry. © 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/62180
Appears in Collections: 影响、适应和脆弱性
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作者单位: Natural Resource Ecology Laboratory, Colorado State University, Fort Collins, CO, United States; Colorado State University, Fort Collins, CO, United States; Nicholas School of the Environment, Duke University, Durham, NC, United States; Bureau of Land Management, Denver, CO, United States; Department of Biology, Fort Lewis College, Durango, CO, United States; Department of Ecosystem Science and Sustainability, Colorado State University, Fort Collins, CO, United States
Recommended Citation:
Ernakovich J.G.,Hopping K.A.,Berdanier A.B.,et al. Predicted responses of arctic and alpine ecosystems to altered seasonality under climate change[J]. Global Change Biology,2014-01-01,20(10)