气候变化领域集成服务门户(CCPortal): Tree diversity, tree height and environmental harshness in eastern and western North America

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DOI	10.1111/ele.12608
	Tree diversity, tree height and environmental harshness in eastern and western North America
	Marks C.O.; Muller-Landau H.C.; Tilman D.
发表日期	2016
ISSN	1461-023X
EISSN	1461-0248
卷号	19 期号:7
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.
英文关键词	Alpha diversity; diversity gradients; environmental favourability; gamma diversity; harshness hypothesis; maximum tree height; site index; tree species richness
学科领域	biodiversity; classification; forest; North America; physiological stress; tree; Biodiversity; Forests; North America; Stress, Physiological; Trees
语种	英语
scopus关键词	biodiversity; classification; forest; North America; physiological stress; tree; Biodiversity; Forests; North America; Stress, Physiological; Trees
来源期刊	Ecology Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/118536
作者单位	The Nature Conservancys, Northampton, MA, 01060, USA; Smithsonian Tropical Research Institute, Panama City, Panama; Department of Ecology, University of Minnesota, St. Paul, MN, 55108, USA
推荐引用方式 GB/T 7714	Marks C.O.,Muller-Landau H.C.,Tilman D.. Tree diversity, tree height and environmental harshness in eastern and western North America[J],2016,19(7).
APA	Marks C.O.,Muller-Landau H.C.,&Tilman D..(2016).Tree diversity, tree height and environmental harshness in eastern and western North America.Ecology Letters,19(7).
MLA	Marks C.O.,et al."Tree diversity, tree height and environmental harshness in eastern and western North America".Ecology Letters 19.7(2016).