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  • 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:
    approved:______________________________________________________ Jeffrey J. McDonnell The specific

  • Measurement and modeling the physical controls of snowmelt in the Pacific Northwest

    Creator:
    Mazurkiewicz, Adam B.
    Abstract:
    The physical controls of snowmelt in the Pacific Northwest (PNW) are poorly understood. While there have been numerous field and modeling investigations at the plot and watershed scale, few studies have identified how the snow energy balance (EB) components vary in importance both spatially and temporally. The identification of how...
    Resource Type:
    Masters Thesis
    Full Text:
    Northwest Abstract approved: —————————————————————————————————— Jeffrey J. McDonnell The

  • Hydrology and geomorphic evolution of basaltic landscapes, High Cascades, Oregon

    Creator:
    Jefferson, Anne (Anne Jarvis)
    Abstract:
    The basaltic landscapes of the Oregon High Cascades form a natural laboratory for examining how geologic setting and history influence groundwater flowpaths, streamflow sensitivity to climate, and landscape evolution. In the High Cascades, highly permeable young basaltic lavas form extensive aquifers. These aquifers are the dominant sources of summer streamflow...
    Resource Type:
    Dissertation
    Full Text:
    Resources Research, 36, 3499-3520. Freer, J., J. J. McDonnell, K. J. Beven, N. E. Peters, D. A. Burns, R

  • Quantification of advection and dispersion in lateral subsurface flowpaths at the hillslope-scale

    Creator:
    Victory, Nichole I.
    Abstract:
    It is becoming increasingly important to understand fundamental hillslope-scale hydrological processes. Most hillslope-sale transport experiments have generally focused on conceptual findings or other aspect of flow behavior, rather than the quantification of the mass transport mechanisms of advection and dispersion. When the velocities have been quantified, dispersion has been mentioned...
    Resource Type:
    Masters Thesis
    Full Text:
    Keable Jeff McDonnell Jack Istok And most of all, my family! My husband, Joe Dunn; my parents

  • Spot seeding : Ponderosa and Jeffrey pine

    Creator:
    Wagg, John William Bruce and Oregon Forest Lands Research Center
    Resource Type:
    Technical Report
    Full Text:
    breeding. I Spot Seeding Ponderosa and Jeffrey Pine by J. W. Bruce Wagg IN 'lam rL r r Gi y ef

  • Effect of the calpain inhibitor E-64-d on the degradation of α-fodrin in damaged muscle

    Creator:
    Boyd, Jeffrey
    Abstract:
    We hypothesized that calpain activity is elevated in response to muscle damage. To test this hypothesis, we examined the degradation of α-fodrin into its 150 and 145 kDa fragments following either 20 eccentric or isometric contractions. In addition, experiments were performed in the presence or absence of E-64-d, a calpain...
    Resource Type:
    Masters Thesis
    Full Text:
    in Damaged Muscle Abstract approved: ______________________________________ Jeffrey J. Widrick

  • Limiting copper loss from treated wood in or near aquatic environments

    Creator:
    Mitsuhashi Gonzalez, June M.
    Abstract:
    Copper migration from treated wood has created concerns within the environmental community because of the potential effects of this heavy metal on aquatic organisms. Migration can be limited, to some extent, by more controlled treatments and by post-treatment processing, but these actions cannot completely overcome the problem. An alternative approach...
    Resource Type:
    Masters Thesis
    Full Text:
    Jeffrey J. Morrell Copper migration from treated wood has created concerns within the

  • The phytosanitation of solid wood packaging materials using wood preservatives

    Creator:
    Schauwecker, Christoph F.
    Abstract:
    New species introductions have been associated with the movement of people for thousands of years. For instance, horses were introduced into North America by Spanish explorers, while pigs were introduced by the Polynesians into many Pacific islands long before the establishment of permanent European settlements. Both of these species introductions...
    Resource Type:
    Masters Thesis
    Full Text:
    approved: ______________________________________________________________ Jeffrey J. Morrell

  • Improving the durability of second growth timbers of naturally durable species

    Creator:
    Cabrera Orozco, Yohanna
    Abstract:
    While the heartwood of many wood species exhibits excellent resistance to fungal and insect attack, this resistance is sometimes diminished in second-growth material of the same species. The reasons for the reduced durability are unclear, but they may reflect a combination of both higher proportions of sapwood as well as...
    Resource Type:
    Masters Thesis
    Full Text:
    . CONTRIBUTION OF AUTHORS Dr. Jeffrey J. Morrell assisted with writing the thesis. Dr. Lehong Jin assisted

  • Remediation of atrazine in irrigation runoff by a constructed wetland

    Creator:
    Runes, Heather B.
    Abstract:
    Due to its frequent use in agriculture and its frequent detection in surface water, atrazine was chosen as a model compound to study the treatment capability of a surface flow wetland used to remediate irrigation runoff at a container nursery near Portland, Oregon. Further evaluation of treatment of atrazine was...
    Resource Type:
    Dissertation
    Full Text:
    , data, and manuscripts. Jenkins, Jeffrey J. Technical support; critical review of the experimental