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Silicate and baltic sea ecosystem response

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.

Call for proposal

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Coordinator

STOCKHOLM UNIVERSITET
Address
5,frescativaegen 50
106 91 Stockholm
Sweden

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Participants (8)

BALTIC SEA RESEARCH INSTITUTE
Germany
Address
15,seestrasse 15
18119 Rostock /Warnemunde

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FINNISH ENVIRONMENTAL INSTITUTE
Finland
Address
6,kesäkatu 6
00251 Helsinki

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LINKOEPING UNIVERSITY
Sweden
Address

581 83 Linkoeping

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NATIONAL ENVIRONMENTAL RESEARCH INSTITUTE - MINISTRY OF ENVIRONMENT AND ENERGY
Denmark
Address
399,frederiksborgvej 399
4000 Roskilde

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SEA FISHERIES INSTITUTE
Poland
Address
Ul. Kollataja 1
81 332 Gdynia

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UNIVERSITY OF HELSINKI
Finland
Address

10900 Hanko

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UNIVERSITY OF LATVIA
Latvia
Address
3,daugavgrivas Street,8
1007 Riga

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UNIVERSITY OF TARTU
Estonia
Address
Lai Street 40
51005 Tartu

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