摘要：This Special Issue of the Boreal Environment Research comprises a selection of papers based on the presentations given at the 7th Baltic Sea Science Congress, in Tallinn from 17 to 21 August 2009,with a theme “Towards better understanding and improved technology for serving the society”. The joint meeting of the Baltic Marine Biologists, the Conference of the Baltic Oceanographers and the Baltic Sea Geologists was hosted by the Tallinn University of Technology and the University of Tartu. Together 22 lectures were assigned to the plenary sessions and 135 oral presentations and 98 poster presentations were given. Altogether, the 7th Baltic Sea Science Congress brought around 300 scien- tists to Tallinn.
