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  • Mineral assessment of open range livestock production on the Warm Springs Indian Reservation

    Creator:
    Brummer, Fara Ann
    Abstract:
    The Warm Springs Reservation is located in central Oregon. Livestock production consists of beef (commercial with an Angus, Horned Hereford base) and roping (Corriente and Longhorn) cattle and horses that forage most of the year on the open range within reservation boundaries. Forage consists of annual and perennial grasses and...
    Resource Type:
    Masters Thesis
    Full Text:
    Buckhouse, Dr. Jim Males, and Barbara Mason. In addition, I would like to thank Dr. Jennifer Kling of

  • Sex determination in Nile tilapia, Oreochromis niloticus: gene expression, masculinization methods, and environmental effects

    Creator:
    Sánchez, Wilfrido M. Contreras
    Abstract:
    Sex differentiation in fish is a labile process that allows sex inversion in several species. The inherent capacity of fish germ cells to differentiate into oocytes or spermatocytes constitutes a key factor allowing for functional sex inversion. This thesis set out to determine the mechanism involved in steroid-induced sex differentiation...
    Resource Type:
    Dissertation
    Full Text:
    unconditional support and continuous advice during the course of this research. Bob Mason, Barbara Shields and

  • Evaluation of Topography and Seismicity on Shallow Landslide Susceptibility

    Creator:
    Hess, Daniel M.
    Abstract:
    Shallow landslides are a prevalent concern in mountainous regions that can result in severe societal, economic, and environmental impacts. The challenge is further compounded as the size and location of a potential slide is often unknown. This study presents a generalized approach for the evaluation of shallow landslide susceptibility using...
    Resource Type:
    Masters Thesis
    Full Text:
    graduate. Thanks to Dr. Michael Olsen, Dr. Ben Mason, and Dr. Robert Kennedy for serving on my committee

  • Trends in streamflow from old growth forested watersheds in the western Cascades

    Creator:
    Moore, Kathleen M.
    Abstract:
    Increasing temperatures in western North America are expected to result in a decline in winter snowpacks, earlier snowmelt, and a shift in the timing of streamflows, with an increasing fraction of streamflows occurring earlier in the water year and drier conditions during the summer. However, few streamflow datasets have associated...
    Resource Type:
    Capstone Project
    Full Text:
    degree of MASTER OF SCIENCE GEOGRAPHY PROGRAM May 2010 Directed by Dr. J. A

  • The Influence of Glacial Isostatic Adjustment on Marine Stratigraphic Correlation

    Creator:
    King, Meghan E.
    Abstract:
    Glacial isostatic adjustment (GIA) alters the amplitude and timing of ‘glacioeustatic’ sea level maxima and minima around the globe. No study has examined the intrinsic distance that one can correlate marine stratigraphic records of glacial–interglacial sedimentation across continental shelves subject to varying amounts of GIA. Here, we seek to model...
    Resource Type:
    Masters Thesis
    Full Text:
    Mason. Additionally a small thanks to the Geological Society of America, for a portion of the

  • Uplift capacity and displacement of helical anchors in cohesive soil

    Creator:
    Young, Jessica
    Abstract:
    Helical anchors are a type of deep foundation element that can be installed quickly in almost any location and can accept the immediate application of operational loads. The use of helical anchors has expanded in recent decades from its established application in the power transmission industry to more traditional civil...
    Resource Type:
    Masters Thesis
    Full Text:
    comments and support provided by my graduate committee: Dr. Karl Haapala, Dr. Ben Mason, and Dr. Mike

  • Fish movement and assemblage dynamics in a Pacific Northwest riverscape

    Creator:
    Baxter, Colden V.
    Abstract:
    This study examined fish movements and assemblage dynamics in the Wenaha, Grande Ronde, Snake river system of northeast Oregon and southeast Washington. I investigated the role of fish movement in the dynamics of stream fish assemblages and evaluated relationships between species movement, assemblage structure, and the heterogeneity of habitat at...
    Resource Type:
    Dissertation

  • Chemical cues and the molecular basis of olfactory chemoreception in caudate amphibians

    Creator:
    Kiemnec, Karen M.
    Abstract:
    Chemoreception is one of the dominant sensory modalities for many species of salamanders (reviewed in Chapter 2). At least seven of the ten currently recognized salamander families are known to respond to some sort of chemical cue. These responses are as varied as delaying hatching, seeking refuge, or initiating aggressive...
    Resource Type:
    Dissertation
    Full Text:
    constructive criticism I received from my graduate committee: Bob Mason, Frank Moore, Dede Olson, and Sue

  • Genomics-enabled exploration of insect toxicity in the Pseudomonas fluorescens group

    Creator:
    Rangel, Lorena I.
    Abstract:
    Pseudomonas is a diverse genus of Gamma proteobacteria that are ubiquitous in the natural environment, including soil, water, plant surfaces, and animals. The Pseudomonas fluorescens group is a diverse collection of seven subgroups and more than 50 named species. This group is known for their production of a variety of...
    Resource Type:
    Masters Thesis
    Full Text:
    function of the Manatee program (J. Craig Venter Institute, Gaithersburg, Maryland). Tc genes present in

  • Ultimate and serviceability limit state reliability-based axial capacity of deep foundations

    Creator:
    Reddy, Seth C.
    Abstract:
    Deep foundations are necessary for the construction of many structures, such as bridges and buildings, located in areas unsuitable for shallow foundations. Owing to the inherent variability of soil and the complex changes that occur in the soil adjacent to deep foundations as they are installed, the ability to accurately...
    Resource Type:
    Dissertation
    Full Text:
    of my research committee including Dr. H. Benjamin Mason, Dr. T. Matthew Evans, Dr. Michael Olsen