Mechanisms of soil acidification reducing bacterial diversity

doi:10.1016/j.soilbio.2014.11.004

	Mechanisms of soil acidification reducing bacterial diversity
	Zhang, Ximei 1; Liu, Wei 2,3; Zhang, Guangming ; Jiang, Lin 1; Han, Xingguo4
	2015
发表期刊	SOIL BIOLOGY & BIOCHEMISTRY
ISSN	0038-0717
卷号	81 页码:275-281
摘要	A central goal in soil microbial ecology research is to identify the biodiversity patterns and reveal the underlying mechanisms. Long-term soil acidification is known to reduce soil bacterial diversity, but the mechanisms responsible for this pattern have not been well explored. Soil acidification may reduce bacterial richness through ecological filtering (EF). In contrast, two types of processes may promote the maintenance of bacterial richness: species may adapt to the acidic pressure through evolution, and endemic species already adapted to the acidic pressure can colonize the acidified soils through dispersal. To identify the relative contribution of EF and evolution/dispersal (ED), we collected soils with a pH range of 4-7 from different ecosystems, conducted an acidification experiment with a similar pH range in a neutral soil, and proposed a conceptual framework that could distinguish the three potential types of mechanism (neither EF nor ED operate; EF operates alone; ED counteracts some effect of EF). We found that the entire bacterial domain was driven by the third type of mechanism, with ED counteracting about 42.4% (95% confidence interval: 32.7-50.4%) effect of EF. Meanwhile, different bacterial phyla/classes were governed by different types of mechanisms, and the dominant was the third type. Our results highlight the importance of both ecological and evolutionary mechanisms for regulating soil bacterial communities under environmental changes. (C) 2014 Elsevier Ltd. All rights reserved.
关键词	Microbial diversity Soil acidification Ecological filtering Environmental filtering Evolutionary adaptation Dispersal
学科领域	Soil Science
DOI	10.1016/j.soilbio.2014.11.004
收录类别	SCI
语种	英语
WOS关键词	COMMUNITIES ; BIOGEOGRAPHY ; PH
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000350524700033
出版者	PERGAMON-ELSEVIER SCIENCE LTD
文献子类	Article
出版地	OXFORD
资助机构	National Natural Science Foundation of China [31300431] ; Strategic Priority Research Program of the Chinese Academy of Sciences [XDB15010404] ; State Key Laboratory of Forest and Soil Ecology of China [LFSE2013-15] ; National Science Foundation of USA [DEB-1257858, DEB-1342754]
作者邮箱	xghan@ibcas.ac.cn
引用统计	被引频次：71[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/25733
专题	系统与进化植物学国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Appl Ecol, State Key Lab Forest & Soil Ecol, Shenyang 110016, Peoples R China 2.Georgia Inst Technol, Sch Biol, Atlanta, GA 30332 USA 3.Chinese Acad Sci, State Key Lab Systemat & Evolutionary Bot, Beijing 100093, Peoples R China 4.Chinese Acad Sci, Inst Bot, Key Lab Plant Resources, Beijing 100093, Peoples R China 5.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Ximei,Liu, Wei,Zhang, Guangming,et al. Mechanisms of soil acidification reducing bacterial diversity[J]. SOIL BIOLOGY & BIOCHEMISTRY,2015,81:275-281.
APA	Zhang, Ximei,Liu, Wei,Zhang, Guangming,Jiang, Lin,&Han, Xingguo.(2015).Mechanisms of soil acidification reducing bacterial diversity.SOIL BIOLOGY & BIOCHEMISTRY,81,275-281.
MLA	Zhang, Ximei,et al."Mechanisms of soil acidification reducing bacterial diversity".SOIL BIOLOGY & BIOCHEMISTRY 81(2015):275-281.

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