A phytoplankton trophic index to assess the status of lakes for the Water Framework Directive
Geoff Phillips, Anne Lyche‐Solheim, Birger Skjelbred, Ute Mischke, Stina Drakare, Gary Free, Marko Järvinen, Caridad de Hoyos, Giuseppe Morabito, Sandra Poikāne, Laurence Carvalho
Abstract