Artificial Warming Effect on Microbial Community and Humic Substance Degradation in Maritime Antarctic Soil in King George Island
DC Field | Value | Language |
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dc.contributor.author | Kim, Dockyu | - |
dc.contributor.author | Park, Ha Ju | - |
dc.contributor.author | Youn, Ui Joung | - |
dc.contributor.author | Hong, Soon Gyu | - |
dc.date.accessioned | 2021-07-29T07:55:58Z | - |
dc.date.available | 2021-07-29T07:55:58Z | - |
dc.date.issued | 2018 | - |
dc.identifier.uri | https://repository.kopri.re.kr/handle/201206/12363 | - |
dc.description.abstract | Although the maritime Antarctic has undergone rapid warming, the effects on indigenous soil-inhabiting microorganisms are not well known. Artificial warming experiments using open-top chamber (OTC) have been performed on the Fildes Peninsula in the maritime Antarctic since 2008. When the soil temperature was measured at a depth of 25 cm during the 20132015 summer seasons, the mean temperature inside OTC (OTC-In) increased by approximately 0.8ºC compared with outside OTC (OTC-Out), while soil chemical and physical characteristics were not changed. Soils from OTC-In and OTC-Out were subjected to analysis for change in microbial community and degradation rate of humic substances (HS, the largest pool of recalcitrant organic carbon). Archaeal and bacterial communities in OTC-In were minimally affected by warming compared with those in OTC-Out, with archaeal methanogenic Thermoplasmata slightly increased in abundance. The abundance of heterotrophic fungi Ascomycota was significantly altered in OTC-In. Total bacterial and fungal biomass in OTC-In increased by 20% compared to OTC-Out, indicating that this may be due to increased microbial degradation activity for soil organic matter (SOM) including HS, which would result in the release of more low-molecular-weight growth substrates from SOM. Despite the effects of warming on the microbial community over the 8-years-experiments warming did not induce any detectable change in content or structure of polymeric HS. | en_US |
dc.language | English | en_US |
dc.language.iso | en | en_US |
dc.title | Artificial Warming Effect on Microbial Community and Humic Substance Degradation in Maritime Antarctic Soil in King George Island | en_US |
dc.title.alternative | 인공적인 토양온도 상승에 의한 남극연안 토양 미생물군집 조성과 부식질 분해능 변화 | en_US |
dc.type | Poster | en_US |
dc.identifier.bibliographicCitation | Kim, Dockyu, et al. 2018. Artificial Warming Effect on Microbial Community and Humic Substance Degradation in Maritime Antarctic Soil in King George Island. 2018 International Meeting of the Microbiological Society of Korea(MSK2018). Gangwon-do. 2018.04.25~2018.04.27. | - |
dc.citation.conferenceDate | 2018.04.25~2018.04.27 | en_US |
dc.citation.conferenceName | 2018 International Meeting of the Microbiological Society of Korea(MSK2018) | en_US |
dc.citation.conferencePlace | Gangwon-do | en_US |
dc.description.articleClassification | 포스터 | - |
dc.subject.keyword | Antarctic soil | en_US |
dc.subject.keyword | Artificial warming | en_US |
dc.subject.keyword | Degradation | en_US |
dc.subject.keyword | Humic substance | en_US |
dc.subject.keyword | Microbial community | en_US |
dc.identifier.localId | 2018-0040 | - |
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