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Nitrogen deposition effects on soil organic matter chemistry are linked to variation in enzymes, ecosystems and size fractions

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Jason C Neff, Martina Stursova, Robert L Sinsabaugh, Donald R Zak, and A Stuart Grandy, Nitrogen deposition effects on soil organic matter chemistry are linked to variation in enzymes, ecosystems and size fractions: .

Summary

Recent research has dramatically advanced our understanding of soil organic matter chemistry and the role of N in some organic matter transformations, but the effects of N deposition on soil C dynamics remain difficult to anticipate. We examined soil organic matter chemistry and enzyme kinetics in three size fractions (>250 Î&frac14;m, 63–250 Î&frac14;m, and <63 Î&frac14;m) following 6 years of simulated atmospheric N deposition in two ecosystems with contrasting litter biochemistry (sugar maple, Acer saccharum—basswood, Tilia americana and black oak, Quercus velutina—white oak, Q. alba). Ambient and simulated (80-kg NO3 −–N ha−1 year−1) atmospheric N deposition were studied in three replicate stands in each ecosystem. [...]

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From Source - Mendeley RIS export <br> On - Tue May 10 10:15:34 CDT 2011

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Title Citation Nitrogen deposition effects on soil organic matter chemistry are linked to variation in enzymes, ecosystems and size fractions

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