Essential ecosystem services provided by the Baltic Sea, e.g. biodiversity, fisheries and tourism, are threatened by eutrophication caused by excess loads of nutrients to the sea. Discharge from rivers is one of the main pathways how nutrients get to the sea. One idea how to tackle the issue is to decrease the amount of nutrients leaking to the rivers by e.g. reactivation of already drained wetlands. The DESIRE project focuses on the numerous disturbed peatlands in the Neman river catchment and ways to restore some of them to act as wetland buffer zones.