I am a Professor of Coastal Biogeochemistry and Scientific Director of the Baltic Sea Centre, Stockholm University, Sweden. One main research focus deals with eutrophication issues of the Baltic Sea and its catchment. We address nutrient pathways in various watersheds and estuaries of the Baltic, investigate large scale phosphorus and oxygen dynamics in the Baltic Sea and estimate the environmental status of the Baltic. Our team was involved in the formulation of the Baltic Sea Action Plan.
Moreover, I am involved in international studies on carbon dynamics in high latitude watersheds and estuaries and along the entire Siberian Shelf with focus on riverine carbon transports, water column carbon dynamics and GHG emissions. A further focus area on this issues are the coastal water around Askö Field Station in Sweden and Tvärminne Zoological station in Finland. A main objective of these studies is to quantify how spatio-temporal variations in marine biodiversity and environmental drivers regulate biogeochemical cycling and contribute to carbon capture, recycling and atmosphericfeedbacks/exchange.
This project aims to use the Baltic Sea to test the hypothesis whether the sediment methane legacy pool, especially derived from the organic carbon legacy pool with large proportion of terrestrial organic carbon, will be a long-lasting source of methane (CH4) to the atmosphere from years to centuries.
Nutrients that accumulate in soils and in the bottom sediments of lakes and streams have a long-term impact on eutrophication in the Baltic Sea. The modeling project “Legacy nutrient dynamics in the Baltic Sea catchment: implications for managing eutrophication” will estimate the magnitude of these legacies and suggest appropriate measures.
This research project is conducted within the CoastClim research group and brings together cutting-edge expertise in marine ecology, biogeochemistry and atmospheric physics to quantify the full spectrum of habitat-specific greenhouse gas fluxes and aerosol production in the Baltic coastal zone.