1. Freshwater Biodiversity Unit; IUCN Global Species Programme; The David Attenborough Building Pembroke Street Cambridge CB2 3QZ UK
2. Department of Tisza Research; Danube Research Institute; Centre for Ecological Research; Hungarian Academy of Sciences; Bem tér 18/c 4026 Debrecen Hungary
3. Pál Juhász-Nagy Doctoral School; University of Debrecen; Egyetem tér 1 4032 Debrecen Hungary
4. Department Conservation Biology; UFZ - Helmholtz Centre for Environmental Research; Permoserstraße 15 04318 Leipzig Germany
5. Osnabrück University of Applied Sciences; Caprivistraße 30 A 49076 Osnabrück Germany
6. Leibniz Institute of Freshwater Ecology and Inland Fisheries; Müggelseedamm 310 12587 Berlin Germany
7. European Commission; Joint Research Centre (JRC); Directorate D - Sustainable Resources; Water and Marine Resources Unit; Via Enrico Fermi 2749 21027 Ispra VA Italy