In a process that may help lakes maintain healthy levels of nutrients, new research from the University of Minnesota College of Biological Sciences shows that a majority of the lakes examined are continuously shedding nitrogen into the atmosphere. Nitrogen, along with phosphorus, is a nutrient that can be found in excess in some lakes. This excess can cause algal blooms that can overwhelm a lake and also produce toxins that can harm fish, local wildlife and people that use water from lakes.
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Source: Phys.org