DOI: 10.1111/ele.12608
Scopus记录号: 2-s2.0-84965047432
论文题名: Tree diversity, tree height and environmental harshness in eastern and western North America
作者: Marks C.O. ; Muller-Landau H.C. ; Tilman D.
刊名: Ecology Letters
ISSN: 1461023X
EISSN: 1461-0248
出版年: 2016
语种: 英语
英文关键词: Alpha diversity
; Diversity gradients
; Environmental favourability
; Gamma diversity
; Harshness hypothesis
; Maximum tree height
; Site index
; Tree species richness
Scopus关键词: biodiversity
; classification
; forest
; North America
; physiological stress
; tree
; Biodiversity
; Forests
; North America
; Stress, Physiological
; Trees
英文摘要: Does variation in environmental harshness explain local and regional species diversity gradients? We hypothesise that for a given life form like trees, greater harshness leads to a smaller range of traits that are viable and thereby also to lower species diversity. On the basis of a strong dependence of maximum tree height on site productivity and other measures of site quality, we propose maximum tree height as an inverse measure of environmental harshness for trees. Our results show that tree species richness is strongly positively correlated with maximum tree height across multiple spatial scales in forests of both eastern and western North America. Maximum tree height co-varied with species richness along gradients from benign to harsh environmental conditions, which supports the hypothesis that harshness may be a general mechanism limiting local diversity and explaining diversity gradients within a biogeographic region. © 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/107835
Appears in Collections: 气候减缓与适应
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作者单位: The Nature Conservancys Northampton 01060MA USA; Smithsonian Tropical Research Institute Panama City Panama; Department of Ecology University of Minnesota St. Paul 55108MN USA
Recommended Citation:
Marks C.O.,Muller-Landau H.C.,Tilman D.. Tree diversity, tree height and environmental harshness in eastern and western North America[J]. Ecology Letters,2016-01-01