In the TEAQUILA project we will focus on improving the state of aquatic ecosystems by controlling the load of terminal electron acceptors (TEAs), besides decreasing nutrient loading. The analysis of coupled biogeochemical cycles addresses the scientific basis for some of today's major environmental problems, such as eutrophication, greenhouse gas fluxes and harmful substances. Besides the source and magnitude of C, N and P loading, we will focus on Mn, Fe and S loading from headwater catchments downstream to the Baltic Sea. By coupling of major element cycles to less studied, yet equally important trace element cycles, our project will produce urgently needed information on how to manage freshwater ecosystems in changing climate and under variable land use patterns (forest, peatland, agricultural land, urban area) by simultaneously maintaining best possible ecosystem services. The eutrophication of aquatic systems is commonly linked to external loading and generally manipulated by decreasing nutrient loading. More variable weather patterns in future climate, however, significantly affect seasonal runoff patterns, simultaneously regulating redox conditions in the catchment and thus the flux of TEAs. Our project will also produce information on the effects of mining industry and peat harvesting on the state of surface waters and enables a more comprehensive evaluation of the efficiency of water protection measures used in agriculture. Further, we will investigate cost-effective strategies to abate nutrients and TEAs based on the experience gathered during the project.
Last modified 16 Jul 2015