Environmental changes affect the assembly of soil bacterial community primarily by mediating stochastic processes

doi:10.1111/gcb.13080

	Environmental changes affect the assembly of soil bacterial community primarily by mediating stochastic processes
	Zhang, Ximei 1; Johnston, Eric R.; Liu, Wei 3,4; Li, Linghao5 ; Han, Xingguo5
	2016
发表期刊	GLOBAL CHANGE BIOLOGY
ISSN	1354-1013
卷号	22 期号:1 页码:198-207
摘要	Both species fitness difference'-based deterministic processes, such as competitive exclusion and environmental filtering, and species fitness difference'-independent stochastic processes, such as birth/death and dispersal/colonization, can influence the assembly of soil microbial communities. However, how both types of processes are mediated by anthropogenic environmental changes has rarely been explored. Here we report a novel and general pattern that almost all anthropogenic environmental changes that took place in a grassland ecosystem affected soil bacterial community assembly primarily through promoting or restraining stochastic processes. We performed four experiments mimicking 16 types of environmental changes and separated the compositional variation of soil bacterial communities caused by each environmental change into deterministic and stochastic components, with a recently developed method. Briefly, because the difference between control and treatment communities is primarily caused by deterministic processes, the deterministic change was quantified as (mean compositional variation between treatment and control) - (mean compositional variation within control). The difference among replicate treatment communities is primarily caused by stochastic processes, so the stochastic change was estimated as (mean compositional variation within treatment) - (mean compositional variation within control). The absolute of the stochastic change was greater than that of the deterministic change across almost all environmental changes, which was robust for both taxonomic and functional-based criterion. Although the deterministic change may become more important as environmental changes last longer, our findings showed that changes usually occurred through mediating stochastic processes over 5years, challenging the traditional determinism-dominated view.
关键词	biodiversity loss climate change colonization dispersal global change grassland metagenome neutral process niche nitrogen deposition
学科领域	Biodiversity Conservation ; Ecology ; Environmental Sciences
DOI	10.1111/gcb.13080
收录类别	SCI
语种	英语
WOS关键词	MICROBIAL COMMUNITY ; BETA-DIVERSITY ; SPECIES RICHNESS ; ELEVATED CO2 ; REVEALS ; DEPOSITION ; DISPERSAL ; RESPONSES ; PATTERNS ; INSIGHTS
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000367982900015
出版者	WILEY
文献子类	Article
出版地	HOBOKEN
EISSN	1365-2486
资助机构	'Strategic Priority Research Program' of CAS [XDB15010404] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31300431] ; China Scholarship Council (CSC)China Scholarship Council [201404910179]
作者邮箱	xghan@ibcas.ac.cn
引用统计	被引频次：82[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/2S10CLM1/25088
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 110164, Peoples R China 2.Georgia Inst Technol, Sch Biol, Atlanta, GA 30332 USA 3.Johnston, Eric R.] Georgia Inst Technol, Sch Civil & Environm Engn, Atlanta, GA 30332 USA 4.Chinese Acad Sci, Inst Bot, Key Lab Systemat & Evolutionary Bot, Beijing 100093, Peoples R China 5.Chinese Acad Sci, Inst Bot, Key Lab Plant Resources, Beijing 100093, Peoples R China 6.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,Johnston, Eric R.,Liu, Wei,et al. Environmental changes affect the assembly of soil bacterial community primarily by mediating stochastic processes[J]. GLOBAL CHANGE BIOLOGY,2016,22(1):198-207.
APA	Zhang, Ximei,Johnston, Eric R.,Liu, Wei,Li, Linghao,&Han, Xingguo.(2016).Environmental changes affect the assembly of soil bacterial community primarily by mediating stochastic processes.GLOBAL CHANGE BIOLOGY,22(1),198-207.
MLA	Zhang, Ximei,et al."Environmental changes affect the assembly of soil bacterial community primarily by mediating stochastic processes".GLOBAL CHANGE BIOLOGY 22.1(2016):198-207.

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