气候变化领域集成服务门户(CCPortal): Nitrogen-fixing tree abundance in higher-latitude North America is not constrained by diversity

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DOI	10.1111/ele.12778
	Nitrogen-fixing tree abundance in higher-latitude North America is not constrained by diversity
	Menge D.N.L.; Batterman S.A.; Liao W.; Taylor B.N.; Lichstein J.W.; Ángeles-Pérez G.
发表日期	2017
ISSN	1461-023X
EISSN	1461-0248
卷号	20 期号:7
英文摘要	The rarity of nitrogen (N)-fixing trees in frequently N-limited higher-latitude (here, > 35°) forests is a central biogeochemical paradox. One hypothesis for their rarity is that evolutionary constraints limit N-fixing tree diversity, preventing N-fixing species from filling available niches in higher-latitude forests. Here, we test this hypothesis using data from the USA and Mexico. N-fixing trees comprise only a slightly smaller fraction of taxa at higher vs. lower latitudes (8% vs. 11% of genera), despite 11-fold lower abundance (1.2% vs. 12.7% of basal area). Furthermore, N-fixing trees are abundant but belong to few species on tropical islands, suggesting that low absolute diversity does not limit their abundance. Rhizobial taxa dominate N-fixing tree richness at lower latitudes, whereas actinorhizal species do at higher latitudes. Our results suggest that low diversity does not explain N-fixing trees' rarity in higher-latitude forests. Therefore, N limitation in higher-latitude forests likely results from ecological constraints on N fixation. © 2017 John Wiley & Sons Ltd/CNRS
英文关键词	actinorhizal; America; diversity; latitude; legume; Mexico; nitrogen; nitrogen fixation; rhizobial; symbiosis
学科领域	nitrogen; forest; nitrogen fixation; North America; tree; Forests; Nitrogen; Nitrogen Fixation; North America; Trees
语种	英语
scopus关键词	nitrogen; forest; nitrogen fixation; North America; tree; Forests; Nitrogen; Nitrogen Fixation; North America; 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/118375
作者单位	Department of Ecology, Evolution, and Environmental Biology, Columbia University, New York, NY 10027, United States; Department of Ecology and Evolutionary Biology, Princeton University, Princeton, NJ 08544, United States; School of Geography and Priestley International Centre for Climate, Leeds University, Leeds, LS2 9JT, United Kingdom; Department of Biology, University of Florida, Gainesville, FL 32611, United States; Postgrado en Ciencias Forestales, Colegio de Postgraduados, Texcoco de Mora, Mexico
推荐引用方式 GB/T 7714	Menge D.N.L.,Batterman S.A.,Liao W.,et al. Nitrogen-fixing tree abundance in higher-latitude North America is not constrained by diversity[J],2017,20(7).
APA	Menge D.N.L.,Batterman S.A.,Liao W.,Taylor B.N.,Lichstein J.W.,&Ángeles-Pérez G..(2017).Nitrogen-fixing tree abundance in higher-latitude North America is not constrained by diversity.Ecology Letters,20(7).
MLA	Menge D.N.L.,et al."Nitrogen-fixing tree abundance in higher-latitude North America is not constrained by diversity".Ecology Letters 20.7(2017).