Linking stoichiometric homoeostasis with ecosystem structure, functioning and stability

生态系统 生态学 优势(遗传学) 生态稳定性 生物 功能生态学 生态化学计量学 生物量(生态学) 生物化学 基因
作者
Qiang Yu,Quansheng Chen,James J. Elser,Nianpeng He,Honghui Wu,Guangming Zhang,Jianguo Wu,Yongfei Bai,Xingguo Han
出处
期刊:Ecology Letters [Wiley]
卷期号:13 (11): 1390-1399 被引量:288
标识
DOI:10.1111/j.1461-0248.2010.01532.x
摘要

Ecology Letters (2010) 13: 1390–1399 Abstract Ecosystem structure, functioning and stability have been a focus of ecological and environmental sciences during the past two decades. The mechanisms underlying their relationship, however, are not well understood. Based on comprehensive studies in Inner Mongolia grassland, here we show that species‐level stoichiometric homoeostasis was consistently positively correlated with dominance and stability on both 2‐year and 27‐year temporal scales and across a 1200‐km spatial transect. At the community level, stoichiometric homoeostasis was also positively correlated with ecosystem function and stability in most cases. Thus, homoeostatic species tend to have high and stable biomass; and ecosystems dominated by more homoeostatic species have higher productivity and greater stability. By modulating organism responses to key environmental drivers, stoichiometric homoeostasis appears to be a major mechanism responsible for the structure, functioning and stability of grassland ecosystems.
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