Freshwater fishesDamsEcosystem managementNATURESustainable developmentBiotic communitiesEnvironmental aspectsFishes, great britainHuman ecologyLife SciencesSCIENCEWater-supply engineeringZoologyAirAnimalsAtmosphereBiodiversityBiodiversitätBiological DiversityECONOMIC ASPECTSEcologyEconomicsEcosystem servicesEcosystems & HabitatsEffect of human beings on