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Filtering by: Creator Hooper, Rick Remove constraint Creator: Hooper, Rick Non-Academic Affiliation Oregon State University. Graduate School Remove constraint Non-Academic Affiliation: Oregon State University. Graduate School

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  • Spatial and Temporal Dynamics of Broad-scale Predictive Models : Influences of Scale

    Creator:
    Hooper, Samuel
    Abstract:
    Developing accurate predictive distribution models requires adequately representing relevant spatial and temporal scales, as these scales are ultimately reflective of the relationships between distributions and influential environmental conditions. In this research, we considered both spatial and temporal scale and the influence each has on predicting broad-scale distributions of two disparate...
    Resource Type:
    Masters Thesis
    Full Text:
    AN ABSTRACT OF THE THESIS OF Samuel Hooper for the degree of Master of Science in Geography

  • Comparing lifespan and life course perspectives on combat exposure and PTSD symptoms in later life : findings from the normative aging study

    Creator:
    Kang, Sungrok
    Abstract:
    We examined how the experiences of World War II and Korean War veterans, including prewar, warzone, and postwar factors, affected PTSD symptoms in later life. This dissertation consists of two studies. In Study 1, four different hypotheses from a lifespan approach were examined (King et al., 1996): stress evaporation (only...
    Resource Type:
    Dissertation
    Full Text:
    and respect to my advisor and dissertation committee chair, Dr. Carolyn Aldwin, and also to Dr. Rick

  • Distribution, decay, and quantification of fecal source-tracking markers

    Creator:
    Green, Hyatt C.
    Abstract:
    Waterborne fecal contamination poses serious risks to human health and can disrupt aquatic ecosystems. Molecular marker methods are widely used to identify and, in some cases, quantify the sources of contamination and guide management decisions regarding water resource protection. However, methods to detect some likely sources of fecal contamination such...
    Resource Type:
    Dissertation
    Full Text:
    acids, vitamins B12 and K (Hooper et al., 2002), and amino acids (Metges, 2000) provides the basis for

  • Climate change impacts on mountain snowpack presented in a knowledge to action framework

    Creator:
    Sproles, Eric A.
    Abstract:
    Throughout many of the world’s mountain ranges snowpack accumulates during the winter and into the spring, providing a natural reservoir for water. As this reservoir melts, it fills streams and recharges groundwater for over 1 billion people globally. Despite its importance to water resources, our understanding of the storage capacity...
    Resource Type:
    Dissertation
    Full Text:
     graduate  council   representative,  Dr.  Rick  Colwell  for  his  time  and  efforts

  • Correlation between structural heterogeneity and arthropod biodiversity : implications for management of Pacific Northwest forests

    Creator:
    Madson, Stephanie Lee
    Abstract:
    The "old-growth controversy" in the Pacific Northwest recognized thinning as the primary silvicultural practice for land managers to produce wildlife habitat while continuing to produce timber. For the foreseeable future, forest stands will be harvested to produce forest gaps and a patchwork of trees of different ages. In order to...
    Resource Type:
    Masters Thesis
    Full Text:
    Doty, Nancy Baumeister, Dr. Bruce McCune and Dr. Tom Bolger. Rick Fish, Pascale LeJeune-Fish, John

  • Toxicity and in vitro metabolism of Senecio jacobaea pyrrolizidine alkaloids in the rat and mouse

    Creator:
    Ramsdell, Howard Scott
    Abstract:
    Senecio jacobaea (tansy ragwort) is a common weed in the Pacific Northwest that contains toxic pyrrolizidine alkaloids (PAs). Jacobine, the major PA in Senecio jacobaea, was incubated with rat liver microsomes and metabolites were isolated by high performance liquid chromatography (HPLC) and identified by mass spectrometric analysis. Metabolites included a...
    Resource Type:
    Dissertation

  • Controls on eruption style and magma compositions at Mount Hood, Oregon

    Creator:
    Koleszar, Alison M.
    Abstract:
    This study is an effort to characterize the magma sources, plumbing system, and eruptive behavior of Mount Hood, a low-explosivity recharge-dominated volcano in the Oregon Cascades. The three manuscripts in this dissertation make use of melt inclusion data, phenocryst compositions, and whole rock petrology and geochemistry to build a schematic...
    Resource Type:
    Dissertation
    Full Text:
    , philosophical, and geological support made graduate school a lot of fun o My fantastic parents, Rick and Edith

  • Eastward Routing of Glacial Lake Agassiz Runoff caused the Younger Dryas Cold Event

    Creator:
    Leydet, David J.
    Abstract:
    The purpose of this thesis is to analyze an abrupt case of climate change in the past as a means to understand the mechanisms that force climate change. By looking to past analogs of climate change, we hopefully will gain an understanding of these events, which could be used to...
    Resource Type:
    Masters Thesis
    Full Text:
    great officemate and even better friend. Sam Hooper – Work life balance was an important part of my

  • Cryptogam communities in forest and steppe ecosystems of Oregon, USA

    Creator:
    Root, Heather T.
    Abstract:
    I focus on addressing knowledge gaps relating to management of cryptogams in Oregon's public lands in Pseudotsuga menziesii-Tsuga heterophylla forests on the west side of the Cascade Range and dryland steppe in the Cascade Range's rainshadow. While a great deal of research has illustrated the importance of late-successional forests for...
    Resource Type:
    Dissertation
    Full Text:
    when I’ve been buried in the monotony of work. Rick Demmer, Sarah Jovan, Daphne Stone, Roger

  • A petrogenetic model for the Caribbean large igneous province

    Creator:
    Krawl, Kyle A.
    Abstract:
    The Caribbean Plateau is an oceanic large igneous province (CLIP). A widely accepted model for LIP petrogenesis proposes that these large bodies of igneous rock are formed by decompression melting associated with upwelling mantle plume heads during the initiation of hotspot activity. According to this classical model, petrogenesis occurs over...
    Resource Type:
    Masters Thesis
    Full Text:
    rock samples. Rick Conrey at Washington State University provided me with valuable assistance