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Bacterial Community Shift in Depth Profiles of Permafrost Soil in Alaska

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Title
Bacterial Community Shift in Depth Profiles of Permafrost Soil in Alaska
Other Titles
알래스카 영구동토층에서의 토양 깊이별 세균 군집 천이
Authors
Lee, Yoo Kyung
Nam, Sungjin
Kim, Ok-Sun
Lee, Bang Yong
Chun, Jongsik
Han, Duk Ki
Kim, Hye Min
Keywords
Alaskan High Arctic; Bacterial community; Global Climate Change; Permafrost; Pyrosequencing
Issue Date
2011
Citation
Lee, Yoo Kyung, et al. 2011. Bacterial Community Shift in Depth Profiles of Permafrost Soil in Alaska. The Microbiological Society of Korea. The Microbiological Society of Korea. 2011.05.13~.
Abstract
Despite the potential contribution of thawing permafrost soil to the global climate change, the research of the microbial diversity has been scarce. In this study, we investigate the bacterial community in active layer soil from the Alaskan high Arctic based on 16S rRNA genes. These bacterial habitats contained relatively low number of OTUs ranged from 397 to 1728 compared to the temperate habitats. Although the bacterial diversity was relatively low, 20 known divisions and 27 unknown divisions were detected. The phyla of Proteobacteria (35.2%), Actinobacteria (20.9%) and Acidobacteria (16.5%) were predominant. Community shift was observed significantly along the soil depth profiles, which certain increase or decrease of relative abundance was detected in some phyla. The comparison between communities based on PCoA indicated that the bacterial composition was separated at 15 cm depth. This suggests that certain environmental parameters drive the formation of bacterial composition in this habitat. This study provides new insight regarding the bacterial communities in the Alaskan high Arctic permafrost.
URI
http://repository.kopri.re.kr/handle/201206/8511
Conference Name
The Microbiological Society of Korea
Conference Place
The Microbiological Society of Korea
Conference Date
2011.05.13~
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