1 Institute of Hydrobiology and Aquatic Ecosystem Management, University of Natural Resources and Life Sciences, Gregor-Mendel-Straße 33, 1180 Vienna, Austria; WasserCluster Lunz, Dr. Kupelwieser-Promenade 5, 3293 Lunz am See, Austria. Electronic address: martin.tschikof@boku.ac.at.
2 Leibniz Institute of Freshwater Ecology and Inland Fisheries Berlin, Justus-von-Liebig-Straße 7, 12489 Berlin, Germany.
3 Institute of Hydrobiology and Aquatic Ecosystem Management, University of Natural Resources and Life Sciences, Gregor-Mendel-Straße 33, 1180 Vienna, Austria; WasserCluster Lunz, Dr. Kupelwieser-Promenade 5, 3293 Lunz am See, Austria.
4 Institute of Hydrobiology and Aquatic Ecosystem Management, University of Natural Resources and Life Sciences, Gregor-Mendel-Straße 33, 1180 Vienna, Austria; WasserCluster Lunz, Dr. Kupelwieser-Promenade 5, 3293 Lunz am See, Austria; Christian Doppler Laboratory for Meta Ecosystem Dynamics in Riverine Landscapes - Research for sustainable River Management, Institute of Hydrobiology and Aquatic Ecosystem Management, University of Natural Resources and Life Sciences, Gregor-Mendel-Straße 33, 1180 Vienna, Austria.
5 UFZ - Helmholtz Centre for Environmental Research, Department of Conservation Biology and Social-Ecological Systems, Permoserstraße 15, 04318 Leipzig, Germany.