Browning could make lakes less productive, affecting food webs and fish

As more dissolved organic matter enters lakes across the northeast United States, darkening the lakes in a phenomena called "browning," new research shows that these waters may be growing less productive and able to sustain less life. In a study published today in Limnology and Oceanography Letters, scientists found that, rather than enriching lakes with nutrients as had previously been assumed, water more heavily laden with dissolved organic matter blocks sunlight and limits plant growth.

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