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Filtering by: Academic Affiliation Geosciences Creator Haggerty, Roy

Labile dissolved organic carbon supply limits hyporheic denitrification

Creator:

Zarnetske, Jay P., Haggerty, Roy, Wondzell, Steven M., and Baker, Michelle A.

Abstract:

We used an in situ steady state ¹⁵N-labeled nitrate (¹⁵NO₃⁻) and acetate (AcO⁻) well-to-wells injection experiment to determine how the availability of labile dissolved organic carbon (DOC) as AcO⁻ influences microbial denitrification in the hyporheic zone of an upland (third-order) agricultural stream. The experimental wells receiving conservative (Cl⁻ and Br)...

Resource Type:

Article
Resazurin as a “smart” tracer for quantifying metabolically active transient storage in stream ecosystems

Creator:

Haggerty, Roy, Martí, Eugénia, Argerich, Alba, von Schiller, Daniel, and Grimm, Nancy B.

Abstract:

We propose the experimental use of resazurin (Raz) and develop a metabolically active transient storage (MATS) model to include processes that may provide additional information on transient storage from a biogeochemical perspective in stream ecosystems. Raz is a phenoxazine compound that reduces irreversibly to resorufin (Rru) in the presence of...

Resource Type:

Article