Blar i forfatter "Frey, Beat"

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    • Comparative vegetation survey with focus on cryptogamic covers in the high Arctic along two differing catenas 

      Kern, Ramona; Hotter, Vivien; Frossard, Aline; Albrecht, Martin; Baum, Christel; Tytgat, Bjorn; de Maeyer, Lotte; Velázquez, David; Seppey, Christophe Victor W.; Frey, Beat; Plotze, Michael; Verleyen, Elie; Quesada, Antonio; Svenning, Mette Marianne; Glaser, Karin; Karsten, Ulf (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-09-24)
      Although cryptogamic covers are important ecosystem engineers in high Arctic tundra, they were often neglected in vegetation surveys. Hence we conducted a systematic survey of cryptogamic cover and vascular plant coverage and composition at two representative, but differing Arctic sites (Ny-Ålesund, Svalbard) along catenas with a natural soil moisture gradient, and integrated these data with ...

    • Higher spatial than seasonal variation in floodplain soil eukaryotic microbial communities 

      Fournier, Bertrand; Samaritani, Emanuela; Frey, Beat; Seppey, Christophe Victor W.; Lara, Enrique; Heger, Thierry J.; Mitchell, Edward A.D. (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-05-10)
      Beta diversity is a key component of biodiversity with implications ranging from species dynamics to ecosystem functioning. However, β-diversity and its drivers have received little attention, especially for micro-eukaryotes which play key roles in soil functioning. We studied the diversity of soil micro-eukaryotes in a Swiss lowland floodplain using high-throughput Illumina sequencing of soil DNA. ...

    • Microbial carbon use and associated changes in microbial community structure in high-Arctic tundra soils under elevated temperature 

      Frossard, Aline; De Maeyer, Lotte; Adamczyk, Magdalene; Svenning, Mette Marianne; Verleyen, Elie; Frey, Beat (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-09-08)
      In the high-Arctic, increased temperature results in permafrost thawing and increased primary production. This fresh plant-derived material is predicted to prime microbial consortia for degradation of the organic matter stored in tundra soils. However, the effects of warming and plant input on the microbial community structure is hardly known. We assessed the use of glycine, a readily available C ...