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Ozone, nitrogen change the way rising CO2 affects Earth's water
Date:7/9/2009

ilability of nutrients such as nitrogen in the soil. The less nitrogen in the soil, the slower their rate of photosynthesis and transpiration.

"The increase in runoff is even larger when nitrogen is limited and environments are exposed to high ozone levels," said Felzer. In fact, the team found an additional 7 to 10 percent rise in runoff when nitrogen was limited and ozone exposure increased.

"Though this study focuses on Eastern U.S. forests, we know nitrogen and ozone effects are also important in South America and Europe. One region has seen a net increase and the other a net runoff reduction," said co-author Adam Schlosser of the Center for Global Change Science at MIT. "Our environment and quality of life depend on less uncertainty on this front."


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Contact: Sarah DeWitt
sarah.l.dewitt@nasa.gov
301-286-0535
NASA/Goddard Space Flight Center
Source:Eurekalert

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Related biology news :

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3. When accounting for the global nitrogen budget, dont forget fish
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6. Evolution of root nodule symbiosis with nitrogen-fixing bacteria
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8. Healthy rivers needed to remove nitrogen
9. ORNL study finds rivers play part in removing nitrogen
10. From the backyard to the ocean: New study shows streams act as key nitrogen filters
11. Streams remove significant amounts of nitrogen, preventing downstream dead zones
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