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Scientific Theme: Advanced Modeling and Observing Systems

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Complementary Research: CIRES <strong>Scientific</strong> Centers<br />

The Limnology Center during 2006 also was heavily involved in preparing portions of a new Encyclopedia of Inl<strong>and</strong><br />

Waters, which is intended to be a l<strong>and</strong>mark reference reflecting the combined expertise of international specialists<br />

on lakes, streams, <strong>and</strong> wetl<strong>and</strong>s. The Encyclopedia is due for release in 2008. Also during 2006, the Center for<br />

Limnology served as the administrative center for International Society for Limnology.<br />

During 2006, the Limnology Center continued its long-term biogeochemical investigations of the South Platte River,<br />

especially focusing on nitrogen <strong>and</strong> oxygen metabolism. A new twist for 2006 was the discovery of substantial<br />

amounts of nitrogen ebullition, not reported previously in rivers (probably because ebullition is generally assumed to<br />

be methane). Rates <strong>and</strong> mechanisms of ebullition were studied during 2006 <strong>and</strong> are being published during 2007.<br />

The discovery of ebullition will necessitate changes in the mass-balance analysis of nitrogen in rivers.<br />

138<br />

Evidence of a thermal response for<br />

nutrient release from lake sediments.

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