In 1969, scientists began fertilising Ontario’s Lake 227 with nitrogen and phosphorus; they stopped adding nitrogen in 1990, but annual algal blooms continued for decades as phosphorus additions remained https://www.byteseu.com/2402049/ #AlgalBlooms #eutrophication #ExperimentalLakesArea #FreshwaterEcosystems #InternationalInstituteForSustainableDevelopment #Lake227 #LongTermEcologicalResearch #NitrogenFixingCyanobacteria #NutrientManagement #PhosphorusControl #Science