Effects of forestry on greenhouse gas emissions from boreal inland waters
Substantial work has been carried out to study effects of forestry on C cycling and its role for mitigating the release of greenhouse gases to the atmosphere. However, current efforts largely neglects the fact that large amounts of C are lost to aquatic systems, that these losses change with forestry, and that different fates and effects of this C in aquatic systems have major implications for landscape C balances and associated feedback effects on the climate system. The aim of the project is to assess consequences of conventional forestry on C cycling in boreal aquatic ecosystems with a special focus on the role of clear-cut practices. The project will quantify the impact of clear-cuts on CO2 and CH4 emission and C-storage in lakes and streams, and, by using these data in combination with GIS data, quantify the importance of these forestry related effects at the landscape level. The project includes catchment scale clear-cutting experiments and a comparative study of catchments with different age of their harvested areas. Results produced from the project will allow a holistic assessment of the role of forestry for C cycling in the landscape, explicitly accounting for, not only effects related to changes in the terrestrial landscape, but also in the aquatic systems. The project will be carried out in close collaboration between terrestrial and aquatic researchers, forest managers and stakeholders.
Marcus Klaus (PhD student)
Anne Deininger (PhD student)