Location and sample pictures of lakes and reservoirs targeted by LIFE PREDATOR A distribution of the 50 lakes and reservoirs targeted by the project B Lake Maggiore (Italy) provided by Gabriele Tartari (Water Research Institute-National Research Council) C Avigliana Grande and Piccolo lakes provided by Bruno Aimone (Ente di gestione delle aree protette delle Alpi Cozie) D Lake Campagna (Italy) provided by Alessandra Pucci (Città Metropolitana di Torino) E Cedillo Reservoir (Spain-Portugal) provided by Filipe Ribeiro (co-author) F Belver Reservoir (Portugal) provided by Lukáš Vejřík (co-author) G Žlutice Rervoir (Czech Republic) provided by Martin Čech (co-author) H Římov Reservoir (Czech Republic) provided by Lukáš Vejřík (co-author).