气候变化领域集成服务门户(CCPortal): Changes of the Bacterial Abundance and Communities in Shallow Ice Cores from Dunde and Muztagata Glaciers, Western China

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DOI	10.3389/fmicb.2016.01716
	Changes of the Bacterial Abundance and Communities in Shallow Ice Cores from Dunde and Muztagata Glaciers, Western China
	Chen, Yong; Li, Xiang-Kai; Si, Jing; Wu, Guang-Jian; Tian, Li-De; Xiang, Shu-Rong
通讯作者	Xiang, SR (通讯作者)
发表日期	2016
ISSN	1664-302X
卷号	7
英文摘要	In this study, six bacterial community structures were analyzed from the Dunde ice core (9.5-m-long) using 16S rRNA gene cloning library technology. Compared to the Murtagata mountain ice core (37-m-long), the Dunde ice core has different dominant community structures, with five genus-related groups Blastococcus sp./Propionibactenum, Cryobacterium-related., Flavobacterium sp., Pedobacter sp., and Polaromas sp. that are frequently found in the six tested ice layers from 1990 to 2000. Live and total microbial density patterns were examined and related to the dynamics of physical-chemical parameters, mineral particle concentrations, and stable isotopic ratios in the precipitations collected from both Murtagata and Dunde ice cores. The Murtagata ice core revealed seasonal response patterns for both live and total cell density, with high cell density occurring in the warming spring and summer months indicated by the proxy value of the stable isotopic ratios. Seasonal analysis of live cell density for the Dunde ice core was not successful due to the limitations of sampling resolution. Both ice cores showed that the cell density peaks were frequently associated with high concentrations of particles. A comparison of microbial communities in the Dunde and Murtagata glaciers showed that similar taxonomic members exist in the related ice cores, but the composition of the prevalent genus-related groups is largely different between the two geographically different glaciers. This indicates that the micro biogeography associated with geographic differences was mainly influenced by a few dominant taxonomic groups.
关键词	HERBASPIRILLUM-HUTTIENSE TIBETAN PLATEAU COMB. NOV.DUST DIVERSITY GREENLAND RECORD RECLASSIFICATION MICROORGANISMS IDENTIFICATION
英文关键词	live cell density; taxonomic group; micro-biogeography; glacier; Tibet Plateau
语种	英语
WOS研究方向	Microbiology
WOS类目	Microbiology
WOS记录号	WOS:000388646700002
来源期刊	FRONTIERS IN MICROBIOLOGY
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258701
推荐引用方式 GB/T 7714	Chen, Yong,Li, Xiang-Kai,Si, Jing,et al. Changes of the Bacterial Abundance and Communities in Shallow Ice Cores from Dunde and Muztagata Glaciers, Western China[J]. 中国科学院青藏高原研究所,2016,7.
APA	Chen, Yong,Li, Xiang-Kai,Si, Jing,Wu, Guang-Jian,Tian, Li-De,&Xiang, Shu-Rong.(2016).Changes of the Bacterial Abundance and Communities in Shallow Ice Cores from Dunde and Muztagata Glaciers, Western China.FRONTIERS IN MICROBIOLOGY,7.
MLA	Chen, Yong,et al."Changes of the Bacterial Abundance and Communities in Shallow Ice Cores from Dunde and Muztagata Glaciers, Western China".FRONTIERS IN MICROBIOLOGY 7(2016).