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Passive warming effect on soil microbial community and humic substance degradation in maritime Antarctic region

Cited 2 time in wos
Cited 6 time in scopus
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dc.contributor.authorKim, Dockyu-
dc.contributor.authorPark, Ha Ju-
dc.contributor.authorKim, Jung Ho-
dc.contributor.authorYoun, Ui Joung-
dc.contributor.authorYang, Yung Hun-
dc.contributor.authorCasanova-Katny, Angelica-
dc.contributor.authorMunoz Vargas, Cristina-
dc.contributor.authorVenegas, Erick Zagal-
dc.contributor.authorPark, Hyun-
dc.contributor.authorHong, Soon Gyu-
dc.date.accessioned2020-04-24T05:49:12Z-
dc.date.available2020-04-24T05:49:12Z-
dc.date.issued2018-02-
dc.identifier.urihttps://repository.kopri.re.kr/handle/201206/10504-
dc.description.abstractAlthough the maritime Antarctic has undergone rapid warming, the effects on indigenous soil-inhabiting microorganisms are not well known. Passive 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 2?5 cm during the 2013?2015 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 (2015 summer) 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 in soil). 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. These results suggest that increased temperature may have significant and direct effects on soil microbial communities inhabiting maritime Antarctic.en_US
dc.languageEnglish-
dc.language.isoenen_US
dc.subjectMicrobiologyen_US
dc.subject.classificationKing Sejong Stationen_US
dc.titlePassive warming effect on soil microbial community and humic substance degradation in maritime Antarctic regionen_US
dc.title.alternative남극 토양온도 상승이 토양 미생물군집과 부식질 분해능에 미치는 영향 조사en_US
dc.typeArticleen_US
dc.identifier.bibliographicCitationKim, Dockyu, et al. 2018. "Passive warming effect on soil microbial community and humic substance degradation in maritime Antarctic region". <em>JOURNAL OF BASIC MICROBIOLOGY</em>, 58(6): 513-522.en_US
dc.citation.titleJOURNAL OF BASIC MICROBIOLOGYen_US
dc.citation.volume58en_US
dc.citation.number6en_US
dc.identifier.doi10.1002/jobm.201700470-
dc.citation.startPage513en_US
dc.citation.endPage522en_US
dc.description.articleClassificationSCI-
dc.description.jcrRateJCR 2016:80.8en_US
dc.subject.keywordAntarctic soilen_US
dc.subject.keyworddegradationen_US
dc.subject.keywordhumic substancesen_US
dc.subject.keywordmicrobial communityen_US
dc.identifier.localId2018-0022-
dc.identifier.scopusid2-s2.0-85044260376-
dc.identifier.wosid000434223300004-
Appears in Collections  
2018-2018, Modeling responses of terrestrial organisms to environmental changes on King George Island (18-18) / Lee, Hyoungseok
2014-2016, Antarctic Organisms: Cold-Adaptation Mechanism and Its Application (14-16) / Park; Hyun
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