气候变化领域集成服务门户(CCPortal): Bacterial community composition and diversity in Kalakuli, an alpine glacial-fed lake in Muztagh Ata of the westernmost Tibetan Plateau

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DOI	10.1093/femsec/fix085
	Bacterial community composition and diversity in Kalakuli, an alpine glacial-fed lake in Muztagh Ata of the westernmost Tibetan Plateau
	Liu, Keshao; Liu, Yongqin; Jiao, Nianzhi; Xu, Baiqing; Gu, Zhengquan; Xing, Tingting; Xiong, Jinbo
通讯作者	Liu, YQ (通讯作者)
发表日期	2017
ISSN	0168-6496
EISSN	1574-6941
卷号	93 期号:7
英文摘要	It is widely accepted that bacterial community composition and diversity in remote alpine lakes are structured by environmental conditions such as nutrient status and temperature. However, the mechanisms that underlie and structure bacterial community composition and diversity in alpine lakes remain unclear. We used 16S rRNA gene-based Illumina MiSeq sequencing to investigate the complex ecological interactions between bacterial communities and nutrient status in Kalakuli Lake, an alpine glacial-fed lake in Muztagh Ata of the westernmost Tibetan Plateau. Our results indicated that the bacterial community was dominated by the Actinobacteria and Proteobacteria. The results of threshold estimates showed that there were apparent shifts in dominance from the Proteobacteria to Actinobacteria groups associated with increasing carbon to nitrogen (C:N) ratio, and the change points were 6.794 and 2.448, respectively. Using multiple statistical methods, we found that the abiotic factors of dissolved organic carbon and total nitrogen had substantial impacts on bacterial diversity, while bacterial community compositions were significantly correlated with both the biotic element of bacterial abundance and the abiotic ones, temperature and pH. These findings demonstrated that the C: N ratio played a significant role in shifting dominant bacterial assemblages in the Kalakuli watershed and provided evidence of nutrients affecting bacterial community composition and diversity. We argue that this study could further shed light on how climate change-induced glacial retreat may impact bacterial communities in glacial-fed lakes under future global warming scenarios.
关键词	ORGANIC-MATTER DYNAMICS MAGNITUDE AVAILABILITY ASSEMBLAGES TEMPERATURE HISTORY CLIMATE SHIFTS
英文关键词	bacterial community composition; nutrient status; Kalakuli Lake; C:N ratio; change points; glacial retreat
语种	英语
WOS研究方向	Microbiology
WOS类目	Microbiology
WOS记录号	WOS:000410344700009
来源期刊	FEMS MICROBIOLOGY ECOLOGY
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/259049
推荐引用方式 GB/T 7714	Liu, Keshao,Liu, Yongqin,Jiao, Nianzhi,et al. Bacterial community composition and diversity in Kalakuli, an alpine glacial-fed lake in Muztagh Ata of the westernmost Tibetan Plateau[J]. 中国科学院青藏高原研究所,2017,93(7).
APA	Liu, Keshao.,Liu, Yongqin.,Jiao, Nianzhi.,Xu, Baiqing.,Gu, Zhengquan.,...&Xiong, Jinbo.(2017).Bacterial community composition and diversity in Kalakuli, an alpine glacial-fed lake in Muztagh Ata of the westernmost Tibetan Plateau.FEMS MICROBIOLOGY ECOLOGY,93(7).
MLA	Liu, Keshao,et al."Bacterial community composition and diversity in Kalakuli, an alpine glacial-fed lake in Muztagh Ata of the westernmost Tibetan Plateau".FEMS MICROBIOLOGY ECOLOGY 93.7(2017).