Libor Závorka1, Magnus Lovén Wallerius2, Martin J. Kainz1*, Johan Höjesjö2*
1WasserCluster Lunz – Inter-university Centre for Aquatic Ecosystem Research, A-3293, Lunz am See, Austria
2Department of Biological and Environmental Sciences, University of Gothenburg, Box 463, SE-405 30, Gothenburg, Sweden
*Equal contribution to the manuscript