DOI: 10.1111/ele.12559
Scopus记录号: 2-s2.0-84953425832
论文题名: Climate determines vascular traits in the ecologically diverse genus Eucalyptus
作者: Pfautsch S. ; Harbusch M. ; Wesolowski A. ; Smith R. ; Macfarlane C. ; Tjoelker M.G. ; Reich P.B. ; Adams M.A.
刊名: Ecology Letters
ISSN: 1461023X
EISSN: 1461-0248
出版年: 2016
卷: 19, 期: 3 起始页码: 240
结束页码: 248
语种: 英语
英文关键词: Anatomy
; Angiosperm tree
; Aridity
; Conduit diameter
; Hydraulic conductivity
; Vessel frequency distribution
; Water availability
; Wood density
; Xylem
Scopus关键词: adaptive radiation
; anatomy
; aridity
; biogeography
; climate change
; climate effect
; dicotyledon
; genotype
; hydraulic conductivity
; morphometry
; natural selection
; phylogenetics
; phylogeny
; trade-off
; water availability
; wood
; xylem
; Australia
; Eucalyptus
; Magnoliophyta
; anatomy and histology
; Australia
; climate
; Eucalyptus
; wood
; Australia
; Climate
; Eucalyptus
; Wood
英文摘要: Current theory presumes that natural selection on vascular traits is controlled by a trade-off between efficiency and safety of hydraulic architecture. Hence, traits linked to efficiency, such as vessel diameter, should show biogeographic patterns; but critical tests of these predictions are rare, largely owing to confounding effects of environment, tree size and phylogeny. Using wood sampled from a phylogenetically constrained set of 28 Eucalyptus species, collected from a wide gradient of aridity across Australia, we show that hydraulic architecture reflects adaptive radiation of this genus in response to variation in climate. With increasing aridity, vessel diameters narrow, their frequency increases with a distribution that becomes gradually positively skewed and sapwood density increases while the theoretical hydraulic conductivity declines. Differences in these hydraulic traits appear largely genotypic in origin rather than environmentally plastic. Data reported here reflect long-term adaptation of hydraulic architecture to water availability. Rapidly changing climates, on the other hand, present significant challenges to the ability of eucalypts to adapt their vasculature. © 2016 John Wiley & Sons Ltd/CNRS. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/107796
Appears in Collections: 气候减缓与适应
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作者单位: Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW, Australia; Faculty of Agriculture and Environment, University of Sydney, 1 Central Avenue, Eveleigh, NSW, Australia; CSIRO Land and Water Flagship, Floreat, WA, Australia; Department of Forest Resources, College of Food, Agricultural, and Natural Resource Sciences, University of Minnesota, St. Paul, MN, United States
Recommended Citation:
Pfautsch S.,Harbusch M.,Wesolowski A.,et al. Climate determines vascular traits in the ecologically diverse genus Eucalyptus[J]. Ecology Letters,2016-01-01,19(3)