Blar i forfatter "Jacobsen, Carsten S."

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    • Abrupt permafrost thaw triggers activity of copiotrophs and microbiome predators 

      Scheel, Maria; Zervas, Athanasios; Rijkers, Ruud; Tveit, Alexander Tøsdal; Ekelund, Flemming; Campuzano Jiménez, Francisco; Christensen, Torben R.; Jacobsen, Carsten S. (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-10-05)
      Permafrost soils store a substantial part of the global soil carbon and nitrogen. However, global warming causes abrupt erosion and gradual thaw, which make these stocks vulnerable to microbial decomposition into greenhouse gases. Here, we investigated the microbial response to abrupt in situ permafrost thaw. We sequenced the total RNA of a 1 m deep soil core consisting of up to 26 500-year-old permafrost ...

    • Distinct summer and winter bacterial communities in the active layer of Svalbard permafrost revealed by DNA- and RNA-based analyses 

      Schostag, Morten; Stibal, Marek; Jacobsen, Carsten S.; Bælum, Jacob; Tas, Neslihan; Elberling, Bo; Jansson, Janet K; Semenchuk, Philipp; Priemé, Anders (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-04-30)
      The active layer of soil overlaying permafrost in the Arctic is subjected to dramatic annual changes in temperature and soil chemistry, which likely affect bacterial activity and community structure. We studied seasonal variations in the bacterial community of active layer soil from Svalbard (78°N) by co-extracting DNA and RNA from 12 soil cores collected monthly over a year. PCR amplicons of 16S ...