TY - GEN A1 - Nixdorf, Brigitte A1 - Knopf, Klaus A1 - Riedmüller, Ursula A1 - Mischke, Ute T1 - From Trophic Classification to Ecological Assessment of Lakes – European Water Framework Directive and German lakes T2 - International Conference „Lakes & Reservoirs: Hot Spot and Topics in Limnology”17-20 September 2019 – Mikorzyn, Poland KW - Trophic Y1 - 2019 UR - http://lakes2019.eu/wp-content/uploads/2019/09/2019_08_Lakes_ewersja.pdf SP - 45 CY - Mikorzyn ER -