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Microbial Community Structure of the Active Layer Soil from Resolute, Canadian High Arctic

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Title
Microbial Community Structure of the Active Layer Soil from Resolute, Canadian High Arctic
Other Titles
캐나다 북극 레졸루트 활동층의 토양 미생물 군집 구조
Authors
Kim, Ok-Sun
Lee, Yoo Kyung
Lee, Hong Kum
Kim, Hye Min
Keywords
Active layer; Archaea; Arctic; Bacteria; Microbial community structure
Issue Date
2014
Citation
Kim, Ok-Sun, et al. 2014. "Microbial Community Structure of the Active Layer Soil from Resolute, Canadian High Arctic". Journal of Climate Change Research, 5(3): 249-256.
Abstract
Permafrost is frozen soil below 0˚C for two or more years. Surface of permafrost is called as active layer that seasonally thaws during the summer. Although the thawing of permafrost may deepen the active layer and consequently increase the microbial activity, the microbial community structure in this habitat has not yet been well described. In this study, we presented bacterial and archaeal diversity in the active layer soil from Resolute, Canada using pyrosequencing analysis. The soil sample was collected from the surface of the marsh covered with moss and Carex. A total of 7,796 bacterial reads for 40 phyla and 245 archaeal reads for 4 phyla were collected, reflecting the high diversity of bacteria. Predominant bacterial groups were Proteobacteria (37.7%) and Bacteroidetes (30.0%) in this study. Major groups in Archaea were Euryarchaeota (51.4%) and Thaumarchaeota (46.1%). Both methane producing archaea and consuming bacteria were detected in this study. Although it might be difficult to characterize microbial community with only one sample, it could be used for the basis of assessing the relative importance of the specific groups with a high resolution on the bacterial and archaeal community in this habitat.
URI
http://repository.kopri.re.kr/handle/201206/6487
DOI
http://dx.doi.org/10.15531/KSCCR.2014.5.3.249
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