1. Institute of Geoecology; TU Braunschweig; Braunschweig Germany
2. Biodiversity, Macroecology & Conservation Biogeography Group; University of Göttingen; Göttingen Germany
3. Department of River Ecology; Helmholtz Centre for Environmental Research - UFZ; Magdeburg Germany
4. Faculty of Life Sciences, Environmental Systems Analysis; Rhine-Waal University of Applied Sciences; Kleve Germany