DOI: 10.1111/ele.12543
Scopus记录号: 2-s2.0-84955359007
论文题名: Taxonomic identity determines N2 fixation by canopy trees across lowland tropical forests
作者: Wurzburger N. ; Hedin L.O.
刊名: Ecology Letters
ISSN: 1461023X
EISSN: 1461-0248
出版年: 2016
卷: 19, 期: 1 起始页码: 62
结束页码: 70
语种: 英语
英文关键词: Arbuscular mycorrhizal fungi
; Biodiversity
; Disturbance
; Molybdenum
; Nitrogen
; Nutrient limitation
; Phosphorus
; Tree-fall gaps
Scopus关键词: Fungi
; molybdenum
; nitrogen
; phosphorus
; soil
; chemistry
; classification
; Fabaceae
; forest
; metabolism
; microbiology
; mycorrhiza
; nitrogen fixation
; phylogeny
; physiology
; soil
; tree
; tropic climate
; Fabaceae
; Forests
; Molybdenum
; Mycorrhizae
; Nitrogen
; Nitrogen Fixation
; Phosphorus
; Phylogeny
; Soil
; Trees
; Tropical Climate
英文摘要: Legumes capable of fixing atmospheric N2 are abundant and diverse in many tropical forests, but the factors determining ecological patterns in fixation are unresolved. A long-standing idea is that fixation depends on soil nutrients (N, P or Mo), but recent evidence shows that fixation may also differ among N2-fixing species. We sampled canopy-height trees across five species and one species group of N2-fixers along a landscape P gradient, and manipulated P and Mo to seedlings in a shadehouse. Our results identify taxonomy as the major determinant of fixation, with P (and possibly Mo) only influencing fixation following tree-fall disturbances. While 44% of trees did not fix N2, other trees fixed at high rates, with two species functioning as superfixers across the landscape. Our results raise the possibility that fixation is determined by biodiversity, evolutionary history and species-specific traits (tree growth rate, canopy stature and response to disturbance) in the tropical biome. Copyright © 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/107824
Appears in Collections: 气候减缓与适应
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作者单位: Odum School of Ecology, University of Georgia, Athens, GA, United States; Department of Ecology and Evolutionary Biology, Princeton University, Princeton, NJ, United States
Recommended Citation:
Wurzburger N.,Hedin L.O.. Taxonomic identity determines N2 fixation by canopy trees across lowland tropical forests[J]. Ecology Letters,2016-01-01,19(1)