气候变化领域集成服务门户(CCPortal): An ectomycorrhizal nitrogen economy facilitates monodominance in a neotropical forest

CCPortal

DOI	10.1111/ele.12570
	An ectomycorrhizal nitrogen economy facilitates monodominance in a neotropical forest
	Corrales A.; Mangan S.A.; Turner B.L.; Dalling J.W.
发表日期	2016
ISSN	1461-023X
EISSN	1461-0248
卷号	19 期号:4
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.
英文关键词	Decomposition; Juglandaceae; Mycorrhizal networks; Mycorrhizal symbiosis; Panama; Stable isotopes
学科领域	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
语种	英语
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
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/118565
作者单位	Department of Plant Biology, University of Illinois at Urbana-Champaign, Urbana-Champaign, IL 61801, United States; Department of Biology, Washington University in St. Louis, St. Louis, MO 63130, United States; Smithsonian Tropical Research Institute, Apartado, Balboa, Ancon, 0843-03092, Panama
推荐引用方式 GB/T 7714	Corrales A.,Mangan S.A.,Turner B.L.,et al. An ectomycorrhizal nitrogen economy facilitates monodominance in a neotropical forest[J],2016,19(4).
APA	Corrales A.,Mangan S.A.,Turner B.L.,&Dalling J.W..(2016).An ectomycorrhizal nitrogen economy facilitates monodominance in a neotropical forest.Ecology Letters,19(4).
MLA	Corrales A.,et al."An ectomycorrhizal nitrogen economy facilitates monodominance in a neotropical forest".Ecology Letters 19.4(2016).