1. Faculty of Environmental Management and Ecology, Tver State Technical University, Nab. Afanasiya Nikitina 22, Tver 170026, Russia
2. Tver Center for Hydrometeorology and Environmental Monitoring, Russian Federal Service for Hydrometeorology and Environmental Monitoring, Efimova Str., 6, Tver 170006, Russia
3. Branch of WPI RAS “Ivankovskaya Research Station”, Water Problems Institute, Russian Academy of Sciences, Belavinskaya 61a, Konakovo 171251, Russia
4. Institute of Hydrobiology and Aquatic Ecosystem Management, University of Natural Resources and Life Sciences, Vienna (BOKU), Gregor-Mendel-Straße 33, 1180 Vienna, Austria