气候变化领域集成服务门户(CCPortal): Relative Roles of Deterministic and Stochastic Processes in Driving the Vertical Distribution of Bacterial Communities in a Permafrost Core from the Qinghai-Tibet Plateau, China

CCPortal

DOI	10.1371/journal.pone.0145747
	Relative Roles of Deterministic and Stochastic Processes in Driving the Vertical Distribution of Bacterial Communities in a Permafrost Core from the Qinghai-Tibet Plateau, China
	Hu, Weigang; Zhang, Qi; Tian, Tian; Li, Dingyao; Cheng, Gang; Mu, Jing; Wu, Qingbai; Niu, Fujun; Stegen, James C.; An, Lizhe; Feng, Huyuan
发表日期	2015
ISSN	1932-6203
卷号	10 期号:12
英文摘要	Understanding the processes that influence the structure of biotic communities is one of the major ecological topics, and both stochastic and deterministic processes are expected to be at work simultaneously in most communities. Here, we investigated the vertical distribution patterns of bacterial communities in a 10-m-long soil core taken within permafrost of the Qing-hai-Tibet Plateau. To get a better understanding of the forces that govern these patterns, we examined the diversity and structure of bacterial communities, and the change in community composition along the vertical distance (spatial turnover) from both taxonomic and phylogenetic perspectives. Measures of taxonomic and phylogenetic beta diversity revealed that bacterial community composition changed continuously along the soil core, and showed a vertical distance-decay relationship. Multiple stepwise regression analysis suggested that bacterial alpha diversity and phylogenetic structure were strongly correlated with soil conductivity and pH but weakly correlated with depth. There was evidence that deterministic and stochastic processes collectively drived bacterial vertically-structured pattern. Bacterial communities in five soil horizons (two originated from the active layer and three from permafrost) of the permafrost core were phylogenetically random, indicator of stochastic processes. However, we found a stronger effect of deterministic processes related to soil pH, conductivity, and organic carbon content that were structuring the bacterial communities. We therefore conclude that the vertical distribution of bacterial communities was governed primarily by deterministic ecological selection, although stochastic processes were also at work. Furthermore, the strong impact of environmental conditions ( for example, soil physicochemical parameters and seasonal freeze-thaw cycles) on these communities underlines the sensitivity of permafrost microorganisms to climate change and potentially subsequent permafrost thaw.
语种	英语
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS关键词	PHYLOGENETIC BETA DIVERSITY ; MICROBIAL DIVERSITY ; ECOLOGY ; SOIL ; BIODIVERSITY ; PATTERNS ; NICHE ; BIOGEOGRAPHY ; REVEALS ; PROFILE
WOS记录号	WOS:000367092600128
来源期刊	PLOS ONE
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/240297
作者单位	[Hu, Weigang; Zhang, Qi; Tian, Tian; Li, Dingyao; Cheng, Gang; Mu, Jing; An, Lizhe; Feng, Huyuan] Lanzhou Univ, Minist Educ, Key Lab Cell Activ & Stress Adaptat, Sch Life Sci, Lanzhou 730000, Peoples R China; [Wu, Qingbai; Niu, Fujun] Chinese Acad Sci, SKLFSE, CAREERI, Lanzhou, Peoples R China; [Stegen, James C.] Pacific NW Natl Lab, Div Biol Sci, Richland, WA 99352 USA
推荐引用方式 GB/T 7714	Hu, Weigang,Zhang, Qi,Tian, Tian,et al. Relative Roles of Deterministic and Stochastic Processes in Driving the Vertical Distribution of Bacterial Communities in a Permafrost Core from the Qinghai-Tibet Plateau, China[J]. 中国科学院西北生态环境资源研究院,2015,10(12).
APA	Hu, Weigang.,Zhang, Qi.,Tian, Tian.,Li, Dingyao.,Cheng, Gang.,...&Feng, Huyuan.(2015).Relative Roles of Deterministic and Stochastic Processes in Driving the Vertical Distribution of Bacterial Communities in a Permafrost Core from the Qinghai-Tibet Plateau, China.PLOS ONE,10(12).
MLA	Hu, Weigang,et al."Relative Roles of Deterministic and Stochastic Processes in Driving the Vertical Distribution of Bacterial Communities in a Permafrost Core from the Qinghai-Tibet Plateau, China".PLOS ONE 10.12(2015).