Institution: | 1. Norwegian Institute for Nature Research (NINA), Trondheim, Norway;2. Biology Centre of the Czech Academy of Sciences, Institute of Hydrobiology, ?eské Budějovice, Czech Republic;3. University of South Bohemia in ?eské Budějovice, Faculty of Science, ?eské Budějovice, Czech Republic;4. University of Jyv?skyl?, Department of Biological and Environmental Science, Jyv?skyl?, Finland |