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The Legacy Effects of Winter Climate on Microbial Functioning After Snowmelt in a Subarctic Tundra
Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences. Umeå University, Arctic Research Centre at Umeå University.
Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences. Umeå University, Arctic Research Centre at Umeå University.
Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences. Umeå University, Arctic Research Centre at Umeå University. Department of Soil and Environment, Swedish University of Agricultural Sciences, Lennart Hjelms väg 9, SE-750 07 Uppsala, Sweden.ORCID iD: 0000-0001-8262-0198
Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences. Umeå University, Arctic Research Centre at Umeå University.
2019 (English)In: Microbial Ecology, ISSN 0095-3628, E-ISSN 1432-184X, Vol. 77, no 1, p. 186-190Article in journal (Refereed) Published
Abstract [en]

Warming-induced increases in microbial CO2 release in northern tundra may positively feedback to climate change. However, shifts in microbial extracellular enzyme activities (EEAs) may alter the impacts of warming over the longer term. We investigated the in situ effects of 3years of winter warming in combination with the in vitro effects of a rapid warming (6days) on microbial CO2 release and EEAs in a subarctic tundra heath after snowmelt in spring. Winter warming did not change microbial CO2 release at ambient (10 degrees C) or at rapidly increased temperatures, i.e., a warm spell (18 degrees C) but induced changes (P<0.1) in the Q(10) of microbial respiration and an oxidative EEA. Thus, although warmer winters may induce legacy effects in microbial temperature acclimation, we found no evidence for changes in potential carbon mineralization after spring thaw.

Place, publisher, year, edition, pages
Springer, 2019. Vol. 77, no 1, p. 186-190
Keywords [en]
Snow manipulation, Extracellular enzymes, -Glucosidase, Phenol oxidase, Microbial respiration, PLFA
National Category
Microbiology Ecology
Identifiers
URN: urn:nbn:se:umu:diva-155650DOI: 10.1007/s00248-018-1213-1ISI: 000454921500014PubMedID: 29948015OAI: oai:DiVA.org:umu-155650DiVA, id: diva2:1282620
Funder
Swedish Research Council, 621-2011-5444Swedish Research Council Formas, 214-2011-788Wallenberg Foundations, KAW 2012.0152Available from: 2019-01-25 Created: 2019-01-25 Last updated: 2019-01-25Bibliographically approved

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Väisänen, MariaGavazov, KonstantinKrab, Eveline JDorrepaal, Ellen

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