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Biogeochemistry

Research group

Short description

In our research group we are investigating the (re-)cycling of nutrients in terrestrial ecosystems, which occurs in the soil-plant-microbe system. Our main focuses are on the gross soil dynamics of nitrogen and phosphorus, as well as the production of biogenic greenhouse gases. We are interested in how global change (climate and land use) affects nutrient cycling and how those feedback to the change, e.g. by governing the responses of vegetation or by production of greenhouse gases.
We are applying a range of methodologies for studying biogeochemical cycles. Stable and radio- isotope techniques are powerful tools to study gross nutrient dynamics and to investigate production pathways of biogenic greenhouse gases. We are also interested in identifying which microbial groups are the main drivers of biogeochemistry in soils.

Research topics:

  • Climate change effects on nutrient cycling and ecosystems
  • Rhizosphere biogeochemistry
  • Nitrogen pathways in arable land
  • Phosphorus mineralization and plant uptake
  •  Biogeochemistry of tropical forests
  • Production of nitrous oxide in soils
  • Arctic browing

Current projects

Biodiversity and Ecosystem services in a Changing Climate - BECC (Strategic Research Area)
Principal investigator: Tobias Rütting and Louise C. Andresen

Future nutrient limitations across ecosystems - a dual look at nitrogen and phosphorus
Financed by: FORMAS
Principal investigator: Louise C. Andresen

Closing the Nitrogn budget in arable fields to identify options for reducing fertilizer N losses
Financed by: FORMAS
Principal investigator: Tobias Rütting

A guide on how land-use management can convert high-emitting drained organic soils into areas with negative emissions
Financed by: FORMAS
Principal investigator: Åsa Kasimir & Louise C. Andresen 

Past projects

Pathways of Nitrous oxide production in forest soils
Financed by: VR and FORMAS
Principal investigator: Tobias Rütting

Elucidating the role of amino acid turnover in the terrestrial nitrogen cycle in comparison to ammonification
Financed by: FORMAS
Principal investigator: Tobias Rütting

Nitrous Oxide Research Alliance
Financed by: Marie Currie ITN