DOI: 10.1111/gcb.13313
论文题名: Temperature extremes: geographic patterns, recent changes, and implications for organismal vulnerabilities
作者: Buckley L.B. ; Huey R.B.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2016
卷: 22, 期: 12 起始页码: 3829
结束页码: 3842
语种: 英语
英文关键词: climate change
; CLIMDEX
; diversity
; extreme events
; heat
; thermal stress
; thermal tolerance
Scopus关键词: air temperature
; climate change
; extreme event
; species diversity
; tolerance
; vulnerability
; agriculture
; animal
; biodiversity
; climate change
; cold
; heat
; human
; Agriculture
; Animals
; Biodiversity
; Climate Change
; Cold Temperature
; Hot Temperature
; Humans
英文摘要: Extreme temperatures can injure or kill organisms and can drive evolutionary patterns. Many indices of extremes have been proposed, but few attempts have been made to establish geographic patterns of extremes and to evaluate whether they align with geographic patterns in biological vulnerability and diversity. To examine these issues, we adopt the CLIMDEX indices of thermal extremes. We compute scores for each index on a geographic grid during a baseline period (1961–1990) and separately for the recent period (1991–2010). Heat extremes (temperatures above the 90th percentile during the baseline period) have become substantially more common during the recent period, particularly in the tropics. Importantly, the various indices show weak geographic concordance, implying that organisms in different regions will face different forms of thermal stress. The magnitude of recent shifts in indices is largely uncorrelated with baseline scores in those indices, suggesting that organisms are likely to face novel thermal stresses. Organismal tolerances correlate roughly with absolute metrics (mainly for cold), but poorly with metrics defined relative to local conditions. Regions with high extreme scores do not correlate closely with regions with high species diversity, human population density, or agricultural production. Even though frequency and intensity of extreme temperature events have – and are likely to have – major impacts on organisms, the impacts are likely to be geographically and taxonomically idiosyncratic and difficult to predict. © 2016 John Wiley & Sons Ltd 资助项目: Thanks to the reviewers, Christian Hof, and members of our laboratory group for helpful comments on the manuscript. We thank A. R. Kiester for the turtle distributional data and S. Diamond for ant distribution data. Research was supported by grants from the National Science Foundation to LBB (DBI-1349865 and EF-1065638) and RBH (IB-1038016).
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61233
Appears in Collections: 影响、适应和脆弱性
There are no files associated with this item.
作者单位: Department of Biology, University of Washington, Seattle, WA, United States
Recommended Citation:
Buckley L.B.,Huey R.B.. Temperature extremes: geographic patterns, recent changes, and implications for organismal vulnerabilities[J]. Global Change Biology,2016-01-01,22(12)