期刊
ANTONIE VAN LEEUWENHOEK INTERNATIONAL JOURNAL OF GENERAL AND MOLECULAR MICROBIOLOGY
卷 109, 期 10, 页码 1323-1335出版社
SPRINGER
DOI: 10.1007/s10482-016-0731-4
关键词
Lake Nam Co; Pyrosequencing; Bacterial community composition; Vertical shift; Tibetan Plateau
类别
资金
- National Basic Research Program of China [2012CB956100]
- National Natural Science Foundation of China [41425004]
We assessed the vertical variation of bacterial abundance, diversity and community composition in deep, high-altitude (4730 m above sea level) Lake Nam Co. The bacterial abundance reduced with increasing depth, while bacterial diversity increased in the deeper bottom water. Pyrosequencing revealed that the bacterial community in the lake showed a pronounced vertical shift: the Bacteroidetes and Proteobacteria had relatively higher abundance in the epilimnion and metalimnion; the Firmicutes group dominated in the metalimnion; the Actinobacteria and Cyanobacteria mainly occupied the metalimnion and hypolimnion. Water temperature, conductivity, photosynthetically active radiation, and chlorophyll a were significantly correlated with the bacterial communities. These results indicated that the bacterial communities appeared to have an apparent vertical structure under lake stratification.
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