期刊
GEOMICROBIOLOGY JOURNAL
卷 32, 期 2, 页码 113-118出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/01490451.2014.929761
关键词
glacial snow; glacial retreat; dominant bacteria; Laohugou Glacier No. 12
资金
- Natural Science Foundation of China [31100369, 41201067, 41101072, 41371091]
One impact of climate change is the rapid shrinking of glaciers, resulting in microorganisms deposited into glacial snow or ice being exposed to new environments such as glacier foreland. A pyrosequencing analysis based on the bacterial 16S rRNA gene showed that bacterial diversity was the highest in proglacial soil, followed by that of glacial snow in ablation zone, then by that of glacial snow in the accumulation area, finally by that of glacial snow in glacier terminus, with the combination of Chao1, ACE, Shannon and Simpson analysis. Eighteen phyla were detected from the 7 samples, but mainly composed of Proteobacteria, Actinobacteria and Bacteroidetes. Flavobacterium, Massilia, Pedobacter, Polaromonas were more abundant in glacial snow samples than in glacial soil sample. Massilia was rarely reported in other environments, implying the necessity for its conservation under scenarios of glacier and snowpack loss induced by climate change.
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