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News Release 09-216

Airborne Nitrogen Affects Aquatic Ecosystem in Alpine Lakes

Scientists compare results from more than 90 freshwater lakes

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Photo of Green Lake 4 in the Front Range of the Colorado Rocky Mountains.

Green Lake 4 in the Front Range of the Colorado Rocky Mountains has high nitrogen levels.

Credit: James Elser


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Photo of Friend's Pond near Gothic, Colorado.

Far from urban and agricultural areas, Friend's Pond near Gothic, Colorado, has less nitrogen among the lakes studied.

Credit: James Elser


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Photo of scientist James Elser is shown at NSF's Niwot Ridge, Colorado, LTER site.

Scientist James Elser is shown at NSF's Niwot Ridge, Colorado, Long-Term Ecological Research site.

Credit: James Elser


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Photo of researchers sampling Norway's Sandvotni Lake.

Researchers sample Norway's Sandvotni Lake; air pollution deposits nitrogen in its waters.

Credit: James Elser


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Photo of a lake in southwestern Norway.

This lake in southwestern Norway, like other lakes in the region, has high nitrogen levels.

Credit: James Elser


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Cover of the Nov. 6 issue of Science magazine.

The researchers' findings are published in the Nov. 6 issue of Science magazine.

Credit: Copyright 2009 AAAS


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