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Manipulation of the Dissolved Organic Carbon Pool in an Agricultural Stream: Responses in Microbial Community Structure, Denitrification, and Assimilatory Nitrogen Uptake

Dates

Year
2011

Citation

Johnson, Laura T., Royer, Todd V., Edgerton, Jael M., and Leff, Laura G., 2011, Manipulation of the Dissolved Organic Carbon Pool in an Agricultural Stream: Responses in Microbial Community Structure, Denitrification, and Assimilatory Nitrogen Uptake: Ecosystems (New York), v. 15.

Summary

[[Abstract ][Carbon (C) and nitrogen (N) are strongly coupled across ecosystems due to stoichiometrically balanced assimilatory demand as well as dissimilatory processes such as denitrification. Microorganisms mediate these biogeochemical cycles, but how microbial communities respond to environmental changes, such as dissolved organic carbon (DOC) availability, and how those responses impact coupled biogeochemical cycles in streams is not clear. We enriched a stream in central Indiana with labile DOC for 5 days to investigate coupled C and N cycling. Before, and on day 5 of the enrichment, we examined assimilatory uptake and denitrification using whole-stream [15]N-nitrate tracer additions and short-term nitrate releases. Concurrently, [...]

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  • National and Regional Climate Adaptation Science Centers
  • Northeast CASC

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Type Scheme Key
ISSN http://sciencebase.gov/vocab/identifierScheme 1435-0629

Citation Extension

citationTypeJournal Article
journalEcosystems (New York)
parts
typeVolume
value15

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