DOI: 10.1111/ele.12570
Scopus记录号: 2-s2.0-84959933218
论文题名: An ectomycorrhizal nitrogen economy facilitates monodominance in a neotropical forest
作者: Corrales A. ; Mangan S.A. ; Turner B.L. ; Dalling J.W.
刊名: Ecology Letters
ISSN: 1461023X
EISSN: 1461-0248
出版年: 2016
卷: 19, 期: 4 起始页码: 383
结束页码: 392
语种: 英语
英文关键词: Decomposition
; Juglandaceae
; Mycorrhizal networks
; Mycorrhizal symbiosis
; Panama
; Stable isotopes
Scopus关键词: Fungi
; Juglandaceae
; Oreomunnea
; Oreomunnea mexicana
; nitrogen
; biodiversity
; forest
; metabolism
; microbiology
; mycorrhiza
; nitrogen cycle
; Panama
; physiology
; tree
; tropic climate
; Biodiversity
; Forests
; Mycorrhizae
; Nitrogen
; Nitrogen Cycle
; Panama
; Soil Microbiology
; Trees
; Tropical Climate
英文摘要: Tropical forests are renowned for their high diversity, yet in many sites a single tree species accounts for the majority of the individuals in a stand. An explanation for these monodominant forests remains elusive, but may be linked to mycorrhizal symbioses. We tested three hypotheses by which ectomycorrhizas might facilitate the dominance of the tree, Oreomunnea mexicana, in montane tropical forest in Panama. We tested whether access to ectomycorrhizal networks improved growth and survival of seedlings, evaluated whether ectomycorrhizal fungi promote seedling growth via positive plant-soil feedback, and measured whether Oreomunnea reduced inorganic nitrogen availability. We found no evidence that Oreomunnea benefits from ectomycorrhizal networks or plant-soil feedback. However, we found three-fold higher soil nitrate and ammonium concentrations outside than inside Oreomunnea-dominated forest and a correlation between soil nitrate and Oreomunnea abundance in plots. Ectomycorrhizal effects on nitrogen cycling might therefore provide an explanation for the monodominance of ectomycorrhizal tree species worldwide. © 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/107777
Appears in Collections: 气候减缓与适应
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作者单位: Department of Plant Biology, University of Illinois at Urbana-Champaign, Urbana-Champaign, IL, United States; Department of Biology, Washington University in St. Louis, St. Louis, MO, United States; Smithsonian Tropical Research Institute, Apartado, Balboa, Ancon, Panama
Recommended Citation:
Corrales A.,Mangan S.A.,Turner B.L.,et al. An ectomycorrhizal nitrogen economy facilitates monodominance in a neotropical forest[J]. Ecology Letters,2016-01-01,19(4)