New studies show that the more diverse a streams biology is, it helps clean up pollutants in the stream quicker. Bradley Cardinale, an ecologist from the Univeristy of Michigan did studies on algae, and how it can help remove nitrate from water. He did many tests using many species of algae. Bradley discovered that the water with more species in it removed nitrates more than 4.5 times faster than water with a less diverse biology.
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