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Strong linkage between active microbial communities and microbial carbon usage in a deglaciated terrain of the High Arctic

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Title
Strong linkage between active microbial communities and microbial carbon usage in a deglaciated terrain of the High Arctic
Other Titles
북극의 빙하후퇴지역에서 미생물 군집 구조와 탄소 이용 패턴 간의 연관성 연구
Authors
Kim, Mincheol
Lee, Yoo Kyung
Gyeong, Hye Ryeon
Keywords
Carbon usage; Glacier retreat; Microbial succession
Issue Date
2017
Citation
Kim, Mincheol, Lee, Yoo Kyung, Gyeong, Hye Ryeon. 2017. Strong linkage between active microbial communities and microbial carbon usage in a deglaciated terrain of the High Arctic. AGU Fall meeting 2017. 미국 뉴올리언스. 2017.12.11~2017.12.15.
Abstract
Soil microorganisms play pivotal roles in ecosystem development and carbon cycling in newly exposed glacier forelands. However, little is known about carbon utilization pattern by metabolically active microbes over the course of ecosystem succession in these nutrient-poor environments. We investigated RNA-based microbial community dynamics and its relation to microbial carbon usage along the chronosequence of a High Arctic glacier foreland. Among microbial taxa surveyed (bacteria, archaea and fungi), bacteria are among the most metabolically active taxa with a dominance of Cyanobacteria and Actinobacteria. There was a strong association between microbial carbon usage and active Actinobacterial communities, suggesting that member of Actinobacteria are actively involved in organic carbon degradation in glacier forelands. Both bacterial community and microbial carbon usage are converged towards later stage of succession, indicating that the composition of soil organic carbon plays important roles in structuring bacterial decomposer communities during ecosystem development.
URI
http://repository.kopri.re.kr/handle/201206/7205
Conference Name
AGU Fall meeting 2017
Conference Place
미국 뉴올리언스
Conference Date
2017.12.11~2017.12.15
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