National Institute of Aquatic Resources

Workshop on Baltic Sea Trout, Helsinki 11-13 October 2011

Knowledge on the status of sea trout populations in the Baltic Sea has improved in recent years and it is increasingly clear that in some areas of the Baltic the populations are severely stressed.

At the same time little or no management action has been taken.

With the intention of

  • Presenting updated information on trout populations in different parts of the Baltic

  • Discussing experience on implementing various management actions, and,

  • Discussing relevant management actions to be taken and ways forward in areas where sea trout are under stress,

the workshop was arranged by the Danish National Institute of Aquatic Resources and the Finnish Game and Fisheries Research Institute, with financial support from the Nordic Council of Ministers.


Participants were relevant managers and scientists from all Baltic Sea countries. A representative from the EU Commission and from HELCOM also participated, together with an invited expert from Norway to ensure that relevant knowledge in Nordic countries was present.


The workshop report was published in February 2012.


The status of sea trout stocks particularly in northern Baltic Sea is very worrying. In some Baltic sea countries, however, there are examples of successful management measures. The Workshop on Baltic Sea Trout recommended a set of fisheries management measures to be implemented over the Baltic sea in order to the improve the status of sea trout stocks.


The Workshop recommended the prohibition of fishing for sea trout in river mouths.  In addition, access to spawning habitats should be ensured. In Finland, the by-catch of young sea trout in gillnet fishing for whitefish and pike-perch is the major threat to seat trout populations. Fisheries management objective should be to secure the sea trout to reach the maturity size during the feeding migration and also safeguard the access to rivers for spawning.


Sea trout stocks have improved in the south west part of the Baltic Sea (particularly in Denmark and Sweden), where they have been systematically supported through the reconditioning of rivers and through carefully implemented fisheries management measures. In Sweden, in the Bothnian Bay coastal area the gillnet fishing has been forbidden at the depth less than 3 meters in the spring and autumn for several years. In many countries, estuary and coastal fishing bans have increased the abundance of spawning sea trout in rivers.

Presentations from the workshop:


Introduction and background

National presentation Sweden  

National presentation Finland

National presentation Russia  

National presentation Estonia  

National presentation Latvia  

National presentation Lithuania  

National presentation Poland  

National presentation Germany  

National presentation Denmark

Last updated 05.03.2012