Objective Regulation of rivers and eutrophication in river basins has largely reduced dissolved silicate (DSi) loads to the Baltic Sea, which is partly responsible for decreasing DSi stocks reported. Reductions in DSi stocks can also be influenced by enhanced deposition in Baltic sediments due to marine eutrophicaton. There are indications that the proportion of diatoms has decreased while flagellates have increased in the Baltic. Similar species shift as a consequence of reduced DSi loads due to damming and marine europhication with far reaching effects for coastal ecosystems are reported worldwide. This project aims to quantify the relative importance of reduced loads vs. marine eutrophicaton for decreasing DSi stocks and its possible ecological effects on phytoplankton assemblages. The proposed project is focussed on the Baltic Sea, where the DSi problem is easier to discern, but the results have general relevance. Fields of science natural sciencesearth and related environmental scienceshydrologydrainage basinsnatural sciencesbiological sciencesecologyecosystemscoastal ecosystems Programme(s) FP5-EESD - Programme for research, technological development and demonstration on "Energy, environment and sustainable development, 1998-2002" Topic(s) 1.1.4.-3. - Key action Sustainable Marine Ecosystems Call for proposal Data not available Funding Scheme CSC - Cost-sharing contracts Coordinator STOCKHOLM UNIVERSITET Address 5,frescativaegen 50 106 91 Stockholm Sweden See on map EU contribution € 0,00 Participants (8) Sort alphabetically Sort by EU Contribution Expand all Collapse all BALTIC SEA RESEARCH INSTITUTE Germany EU contribution € 0,00 Address 15,seestrasse 15 18119 Rostock /warnemunde See on map FINNISH ENVIRONMENTAL INSTITUTE Finland EU contribution € 0,00 Address 6,kesäkatu 6 00251 Helsinki See on map LINKOEPING UNIVERSITY Sweden EU contribution € 0,00 Address 581 83 Linkoeping See on map NATIONAL ENVIRONMENTAL RESEARCH INSTITUTE - MINISTRY OF ENVIRONMENT AND ENERGY Denmark EU contribution € 0,00 Address 399,frederiksborgvej 399 4000 Roskilde See on map SEA FISHERIES INSTITUTE Poland EU contribution € 0,00 Address Ul. kollataja 1 81 332 Gdynia See on map UNIVERSITY OF HELSINKI Finland EU contribution € 0,00 Address 10900 Hanko See on map UNIVERSITY OF LATVIA Latvia EU contribution € 0,00 Address 3,daugavgrivas street,8 1007 Riga See on map UNIVERSITY OF TARTU Estonia EU contribution € 0,00 Address Lai street 40 51005 Tartu See on map