气候变化领域集成服务门户(CCPortal): Mycorrhizal type effects on leaf litter decomposition depend on litter quality and environmental context

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DOI	10.1007/s10533-021-00810-x
	Mycorrhizal type effects on leaf litter decomposition depend on litter quality and environmental context
	Seyfried G.S.; Dalling J.W.; Yang W.H.
发表日期	2021
ISSN	1682563
英文摘要	Slower leaf litter decomposition rates for trees associated with ectomycorrhizal (ECM) fungi compared to arbuscular mycorrhizal (AM) fungi may lead to the development of conservative nitrogen cycling and accumulation of soil organic matter in surface soils of ECM-dominated forests. Slower decomposition is hypothesized to occur via two often-confounded mechanisms: production of lower quality litter by ECM-associated trees compared to AM-associated trees and competition for nitrogen between ECM and saprotrophic decomposers in ECM-dominated stands. To disentangle the effects of litter quality and stand mycorrhizal type on decomposition, we measured litter mass loss rates of two AM species higher and two AM species similar in chemical quality to two ECM species. Leaf litter was decomposed for two years in neighboring ECM- and AM-dominated stands of a wet tropical montane forest. Litter phosphorus (P) was the strongest predictor of decomposition rates across all species, with no effect of litter mycorrhizal type on decomposition rates. Only one species, which exhibited intermediate litter chemical quality and decomposition rate, decomposed significantly faster in AM- compared to ECM-dominated stands. Leaf litter decomposition rates cannot be predicted directly from litter mycorrhizal type or stand mycorrhizal type because litter chemical quality and environmental conditions mediate the manifestation of slower decomposition in ECM stands. © 2021, The Author(s), under exclusive licence to Springer Nature Switzerland AG.
英文关键词	Arbuscular mycorrhizal fungi; Ectomycorrhizal fungi; Litter chemistry; Litter decomposition; Mass loss; Tropical forest
语种	英语
来源期刊	Biogeochemistry
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/184647
作者单位	Department of Plant Biology, University of Illinois At Urbana-Champaign, Urbana, IL 61801, United States; Smithsonian Tropical Research Institute, Balboa, Ancon, Panama City, Apartado 0843-03092, Panama; Department of Geology, University of Illinois At Urbana-Champaign, Urbana, IL 61801, United States
推荐引用方式 GB/T 7714	Seyfried G.S.,Dalling J.W.,Yang W.H.. Mycorrhizal type effects on leaf litter decomposition depend on litter quality and environmental context[J],2021.
APA	Seyfried G.S.,Dalling J.W.,&Yang W.H..(2021).Mycorrhizal type effects on leaf litter decomposition depend on litter quality and environmental context.Biogeochemistry.
MLA	Seyfried G.S.,et al."Mycorrhizal type effects on leaf litter decomposition depend on litter quality and environmental context".Biogeochemistry (2021).