Forest Hydrology and Biogeochemistry pp 117-135

Part of the Ecological Studies book series (ECOLSTUD, volume 216)

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Spectral Methods to Advance Understanding of Dissolved Organic Carbon Dynamics in Forested Catchments

  • Rose M. Cory
  • Elizabeth W. Boyer
  • Diane M. McKnight
Chapter

Abstract

Dissolved organic carbon (DOC) has long been recognized to be a critical water quality characteristic in forested catchments, as it is a major component of the carbon balance and energy cycle in aquatic ecosystems, and is highly relevant to a diversity of environmental problems. Challenges remain in quantifying fluxes of DOC in surface waters, and understanding its composition and reactivity. Here, we review the use of simple spectral methods to quantify DOC concentration and composition in surface waters. We discuss use of absorbance spectroscopy, which has been widely used as a surrogate for DOC concentration and as an indicator of changing DOC composition in waters of forested catchments; and the use of fluorescence spectroscopy, where spectral analyses of three-dimensional excitation-emission matrices are used to characterize sources of DOC. Finally, we discuss future needs in fluorescence biogeochemistry.

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Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  • Rose M. Cory
    • 1
  • Elizabeth W. Boyer
    • 2
  • Diane M. McKnight
    • 3
  1. 1.Department of Environmental Sciences and Engineering Gillings School of Global Public HealthUniversity of North CarolinaChapel HillUSA
  2. 2.School of Forest ResourcesThe Pennsylvania State UniversityUniversity ParkUSA
  3. 3.Institute of Arctic and Alpine Research Department of Civil, Environmental and Architectural EngineeringUniversity of ColoradoBoulderUSA

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