Report of the Study Group on data requirements and assessment needs for Baltic Sea trout (SGBALANST)

The ICES Study Group on Data Requirements and Assessment Needs for Baltic Sea Trout (SGBALANST) met in St. Petersburg, Russia, 23 March 2010, and by corre-spondence between January 2010 and March 2011. Fifteen delegates from eight coun-tries participated.The study group was continued from 2007/2008, when the availability of data for an assessment was investigated, and 2009 when the status of recruitment was estimated together with information on migration. The work in 2010/2011 focussed on establish-ing habitat criteria for trout parr, defining a common habitat description and to give advice for future assessment of trout population status.