globalchange  > 气候减缓与适应
DOI: 10.1111/ele.12778
Scopus记录号: 2-s2.0-85019420888
论文题名:
Nitrogen-fixing tree abundance in higher-latitude North America is not constrained by diversity
作者: Menge D.N.L.; Batterman S.A.; Liao W.; Taylor B.N.; Lichstein J.W.; Ángeles-Pérez G.
刊名: Ecology Letters
ISSN: 1461023X
EISSN: 1461-0248
出版年: 2017
卷: 20, 期:7
起始页码: 842
结束页码: 851
语种: 英语
英文关键词: actinorhizal ; America ; diversity ; latitude ; legume ; Mexico ; nitrogen ; nitrogen fixation ; rhizobial ; symbiosis
Scopus关键词: nitrogen ; forest ; nitrogen fixation ; North America ; tree ; Forests ; Nitrogen ; Nitrogen Fixation ; North America ; Trees
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
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/107598
Appears in Collections:气候减缓与适应

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作者单位: Department of Ecology, Evolution, and Environmental Biology, Columbia University, New York, NY, United States; Department of Ecology and Evolutionary Biology, Princeton University, Princeton, NJ, United States; School of Geography and Priestley International Centre for Climate, Leeds University, Leeds, United Kingdom; Department of Biology, University of Florida, Gainesville, FL, United States; Postgrado en Ciencias Forestales, Colegio de Postgraduados, Texcoco de Mora, Mexico

Recommended Citation:
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]. Ecology Letters,2017-01-01,20(7)
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