Canadian environmental sustainability indicators : reductions in phosphorus loads to Lake Winnipeg. : En4-144/89-1-2023E-PDF

"Phosphorus is an essential plant nutrient. However, when phosphorus levels are too high, or too low, they can have harmful impacts on a lake's water quality and food web as observed in Lake Winnipeg. In the absence of human development, natural background levels of phosphorus are relatively low. High phosphorous levels in Lake Winnipeg may result from human-related factors such as agricultural runoff and urban runoff. Reducing the amount of phosphorus that enters Lake Winnipeg helps to improve water quality and the ecosystem health of the lake. Environment and Climate Change Canada's support and funding for the efforts to reduce nutrients, through the Lake Winnipeg Basin Program, will help Manitoba achieve its long-term goal of reducing phosphorus concentrations in the lake by 50% to pre-1990 levels. This indicator shows the extent to which the projects completed since 2010 have reduced the amount of phosphorus reaching Lake Winnipeg"--Page 5.

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