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DOI	10.1111/ele.12665
	Teasing apart plant community responses to N enrichment: the roles of resource limitation, competition and soil microbes
	Farrer E.C.; Suding K.N.
发表日期	2016
ISSN	1461-023X
EISSN	1461-0248
卷号	19 期号:10
英文摘要	Although ecologists have documented the effects of nitrogen enrichment on productivity, diversity and species composition, we know little about the relative importance of the mechanisms driving these effects. We propose that distinct aspects of environmental change associated with N enrichment (resource limitation, asymmetric competition, and interactions with soil microbes) drive different aspects of plant response. We test this in greenhouse mesocosms, experimentally manipulating each factor across three ecosystems: tallgrass prairie, alpine tundra and desert grassland. We found that resource limitation controlled productivity responses to N enrichment in all systems. Asymmetric competition was responsible for diversity declines in two systems. Plant community composition was impacted by both asymmetric competition and altered soil microbes, with some contributions from resource limitation. Results suggest there may be generality in the mechanisms of plant community change with N enrichment. Understanding these links can help us better predict N response across a wide range of ecosystems. © 2016 John Wiley & Sons Ltd/CNRS.
英文关键词	Alpine tundra; asymmetric competition; desert grassland; diversity; fertilisation; global change; greenhouse experiment; inoculum; nitrogen; tallgrass prairie
学科领域	carbon; fertilizer; nitrogen; bacterium; biodiversity; classification; grassland; metabolism; microbiology; plant; plant physiology; population density; tundra; Bacteria; Biodiversity; Carbon; Fertilizers; Grassland; Nitrogen; Plant Physiological Phenomena; Plants; Population Density; Soil Microbiology; Tundra
语种	英语
scopus关键词	carbon; fertilizer; nitrogen; bacterium; biodiversity; classification; grassland; metabolism; microbiology; plant; plant physiology; population density; tundra; Bacteria; Biodiversity; Carbon; Fertilizers; Grassland; Nitrogen; Plant Physiological Phenomena; Plants; Population Density; Soil Microbiology; Tundra
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/118482
作者单位	Department of Ecology and Evolutionary Biology, Tulane University, New Orleans, LA, 70118, USA, United States; Institute of Arctic and Alpine Research, University of Colorado Boulder, Boulder, CO, 80303, USA, United States
推荐引用方式 GB/T 7714	Farrer E.C.,Suding K.N.. Teasing apart plant community responses to N enrichment: the roles of resource limitation, competition and soil microbes[J],2016,19(10).
APA	Farrer E.C.,&Suding K.N..(2016).Teasing apart plant community responses to N enrichment: the roles of resource limitation, competition and soil microbes.Ecology letters,19(10).
MLA	Farrer E.C.,et al."Teasing apart plant community responses to N enrichment: the roles of resource limitation, competition and soil microbes".Ecology letters 19.10(2016).