Blar i forfatter "Ambus, Per Lennart"

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    • Deepened snow enhances gross nitrogen cycling among Pan-Arctic tundra soils during both winter and summer 

      Xu, Wenyi; Prieme, Anders; Cooper, Elisabeth; Mörsdorf, Martin Alfons; Elberling, Bo; Semenchuk, Philipp; Grogan, Paul; Ambus, Per Lennart (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-07-10)
      Many Arctic regions currently experience an increase in winter snowfall as a result of climate change. Deepened snow can enhance thermal insulation of the underlying soil during winter, resulting in warmer soil temperatures that promote soil microbial nitrogen (N)-cycle processes and the availability of N and other nutrients. We conducted an <i>ex situ</i> study comparing the effects of deepened ...

    • Deepened winter snow significantly influences the availability and forms of nitrogen taken up by plants in High Arctic tundra 

      Mörsdorf, Martin Alfons; Baggesen, Nanna Schrøder; Yoccoz, Nigel Gilles; Michelsen, Anders; Elberling, Bo; Ambus, Per Lennart; Cooper, Elisabeth J. (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-05-13)
      Climate change may alter nutrient cycling in Arctic soils and plants. Deeper snow during winter, as well as summer warming, could increase soil temperatures and thereby the availability of otherwise limiting nutrients such as nitrogen (N). We used fences to manipulate snow depths in Svalbard for 9 consecutive years, resulting in three snow regimes: 1) <i>Ambient</i> with a maximum snow depth of ...