Ecosystem modeling to understand global change effects to terrestrial and fresh water systems
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Concurrent changes in climate, atmospheric nitrogen (N) and sulfur (S) deposition, and increasing levels of atmospheric carbon dioxide (CO2) affect ecosystems in complex ways. Atmospheric deposition of S and N species have the potential to acidify terrestrial and aquatic ecosystems, but nitrate and ammonium are also critical nutrients for plant and microbial productivity and are a potential cause of eutrophication. Climate change and CO2 fertilization, with or without changes in N deposition, may affect rates of plant growth, water availability, soil organic matter decomposition rates, and net ...