Member for 12 years 9 months Aquatic Ecosystems Biodiversity and Processes in Freshwater Ecosystems Lentic Ecosystems Institute of Biodiversity and Ecosystem Research Bulgarian Academy of Sciences 1 Tsar Osvoboditel Blvd. Sofia 1000, Bulgaria Tel.: +359 2 9896997 E-mail: trichkova@gmail.com Web pages: www.esenias.org www.dreissena.info