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Filtering by: Subject Organic farming -- Oregon Remove constraint Subject: Organic farming -- Oregon Committee Member Lajtha, Kate Remove constraint Committee Member: Lajtha, Kate

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  • Hydrologic and Land Cover Effects on Sources and Fate of In-Stream Fluorescent Dissolved Organic Matter

    Creator:
    Lee, Baek Soo P.
    Abstract:
    Dissolved organic matter (DOM) is a critical component of the carbon cycle linking terrestrial and aquatic ecosystems. Although many factors influence DOM fluxes and quality in rivers, controls on DOM compositions in catchments of the western U.S. are poorly understood. UV and fluorescent spectroscopy is a simpler, faster, and less...
    Resource Type:
    Dissertation
    Full Text:
    Sources and Fate of In-Stream Fluorescent Dissolved Organic Matter Abstract approved

  • Hydro-biogeochemical coupling at the hillslope and catchment scale

    Creator:
    van Verseveld, Willem J.
    Abstract:
    The specific objectives of this dissertation are to determine subsurface flow behaviors across different antecedent wetness conditions from a top-down perspective and to mechanistically assess the hydrological controls on DOC and N transport at the hillslope and catchment scale. The study area is a small catchment where hillslopes issue directly...
    Resource Type:
    Dissertation
    Full Text:
    soil-bedrock interface and then laterally downslope with limited supply of nutrients in the organic