Index Catalog // ScholarsArchive@OSU

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

Creator:: Argerich, Alba, Haggerty, Roy, Johnson, Sherri L., Wondzell, Steven M., Dosch, Nicholas, Corson-Rikert, Hayley, Ashkenas, Linda R., Pennington, Robert, and Thomas, Christoph K.
Abstract:: Headwater streams comprise nearly 90% of the total length of perennial channels in global catchments. They mineralize organic carbon entering from terrestrial systems, evade terrestrial carbon dioxide (CO₂ ), and generate and remove carbon through in-stream primary production and respiration. Despite their importance, headwater streams are often neglected in global...

Creator:: Argerich, Alba, Haggerty, Roy, Johnson, Sherri L., Wondzell, Steven M., Dosch, Nicholas, Corson-Rikert, Hayley, Ashkenas, Linda R., Pennington, Robert, and Thomas, Christoph K.
Abstract:: Headwater streams comprise nearly 90% of the total length of perennial channels in global catchments. They mineralize organic carbon entering from terrestrial systems, evade terrestrial carbon dioxide (CO₂ ), and generate and remove carbon through in-stream primary production and respiration. Despite their importance, headwater streams are often neglected in global...

Creator:: Argerich, Alba, Haggerty, Roy, Johnson, Sherri L., Wondzell, Steven M., Dosch, Nicholas, Corson-Rikert, Hayley, Ashkenas, Linda R., Pennington, Robert, and Thomas, Christoph K.
Abstract:: Headwater streams comprise nearly 90% of the total length of perennial channels in global catchments. They mineralize organic carbon entering from terrestrial systems, evade terrestrial carbon dioxide (CO₂ ), and generate and remove carbon through in-stream primary production and respiration. Despite their importance, headwater streams are often neglected in global...
Resource Type:: Article

Creator:: Zarnetske, Jay P., Haggerty, Roy, and Wondzell, Steven M.
Abstract:: Excess NO₃⁻ in streams is a growing and persistent problem for both inland and coastal ecosystems, and denitrification is the primary removal process for NO₃⁻. Hyporheic zones can have high denitrification potentials, but their role in reach- and network-scale NO₃⁻ removal is unknown because it is difficult to estimate. We...
Resource Type:: Article

Creator:: Diabat, Mousa, Haggerty, Roy, and Wondzell, Steven M.
Abstract:: Stream temperature will be subject to changes because of atmospheric warming in the future. We investigated the effects of the diurnal timing of air temperature changes – daytime warming versus nighttime warming – on stream temperature. Using the physically based model, Heat Source, we performed a sensitivity analysis of summer...
Resource Type:: Article

Creator:: Zarnetske, Jay P., Haggerty, Roy, Wondzell, Steven M., Bokil, Vrushali A., and Gonzalez-Pinzon, Ricardo
Abstract:: The fate of biologically available nitrogen (N) and carbon (C) in stream ecosystems is controlled by the coupling of physical transport and biogeochemical reaction kinetics. However, determining the relative role of physical and biogeochemical controls at different temporal and spatial scales is difficult. The hyporheic zone (HZ), where groundwater–stream water...
Resource Type:: Article

Creator:: Wondzell, Steven M., LaNier, Justin, Haggerty, Roy, Woodsmith, Richard D., and Edwards, Richard T.
Abstract:: We investigated the response of hyporheic exchange flow (HEF) to wood removal in a small, low-gradient, gravel bed stream in southeast Alaska using a series of groundwater models built to simulate HEF for the initial conditions immediately after wood removal and 1 month, 2 years, 4 years, and 16 years...
Resource Type:: Article

Creator:: Zarnetske, Jay P., Haggerty, Roy, Wondzell, Steven M., and Baker, Michelle A.
Abstract:: Biogeochemical reactions associated with stream nitrogen cycling, such as nitrification and denitrification, can be strongly controlled by water and solute residence times in the hyporheic zone (HZ). We used a whole‐stream steady state ¹⁵N‐labeled nitrate (¹⁵NO₃⁻) and conservative tracer (Cl⁻) addition to investigate the spatial and temporal physiochemical conditions controlling...
Resource Type:: Article

Creator:: Haggerty, Roy, Wondzell, Steven M., and Johnson, Matthew A.
Abstract:: We measured the hyporheic residence time distribution in a 2nd-order mountain stream at the H. J. Andrews Experimental Forest, Oregon, and found it to be a power-law over at least 1.5 orders of magnitude in time (1.5 hr to 3.5 d). The residence time distribution has a very long tail...
Resource Type:: Article

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