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@ARTICLE{Rindt:1006812,
      author       = {Rindt, Oscar and Rosinger, Christoph and Bonkowski, Michael
                      and Rixen, Christian and Brüggemann, Nicolas and Urich, Tim
                      and Fiore-Donno, Anna Maria},
      title        = {{B}iogeochemical dynamics during snowmelt and in summer in
                      the {A}lps},
      journal      = {Biogeochemistry},
      volume       = {162},
      number       = {2},
      issn         = {1939-1234},
      address      = {Dordrecht [u.a.]},
      publisher    = {Springer Science + Business Media B.V.},
      reportid     = {FZJ-2023-01865},
      pages        = {257 - 266},
      year         = {2023},
      abstract     = {In alpine zones, soil microbial biomass and activity are
                      strongly dependent on the seasonal snow cover. Current
                      models assume that microbial biomass reaches an annual peak
                      in winter under the insulating snowpack with a subsequent
                      sharp decline during snowmelt. In this study, we
                      investigated the seasonal dynamics of the soil microbial
                      biomass in the Central Alps, where usually early snowfall
                      buffers winter soil temperatures. We conducted a large-scale
                      survey in three mountains around Davos (Switzerland) along
                      altitudinal gradients from approximately 1900 to 2800 m
                      above sea level. Using a space-for-time approach during
                      snowmelt, soil samples were taken (1) under, (2) at the edge
                      of, and (3) one meter away from remaining snow patches. One
                      additional sample per site was taken in summer to further
                      evaluate the seasonal dynamics. In total, 184 soil samples
                      from 46 different sites were analyzed. We measured microbial
                      biomass C and N, enzymatic activity and dissolved C and N.
                      We observed an increase of microbial biomass and dissolved C
                      during and immediately after snowmelt, as well as an
                      increase from spring to summer. We suggest that the absence
                      of soil freezing in winter and the growing amounts of
                      dissolved C supported a continued growth, without a sudden
                      collapse of the microbial biomass. Our results underline the
                      importance of the insulating effect of the seasonal snow
                      cover for the microbial dynamics. Global warming is
                      modifying the timing and abundance of the seasonal snow
                      cover, and our results will help to refine models for the
                      dynamics of soil microbes in alpine ecosystems.},
      cin          = {IBG-3},
      ddc          = {550},
      cid          = {I:(DE-Juel1)IBG-3-20101118},
      pnm          = {2173 - Agro-biogeosystems: controls, feedbacks and impact
                      (POF4-217)},
      pid          = {G:(DE-HGF)POF4-2173},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000898672000001},
      doi          = {10.1007/s10533-022-01005-8},
      url          = {https://juser.fz-juelich.de/record/1006812},
}