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  • Effects of Forest Harvest, Floods, and Wildfire on Bedload Export from Headwater Catchments in the H.J. Andrews Experimental Forest, 1957 – 2022

    Creator:
    Wright, Charles M.
    Abstract:
    This study examined how annual bedload export volume and bedload characteristics were related to disturbances including logging, floods, debris slides, and wildfires over 48 to 65-year periods in small, steep catchments in conifer forests of the western Cascade Range, Oregon. Bedload – the material rolling, sliding, or saltating along the...
    Resource Type:
    Masters Thesis
    Full Text:
    AN ABSTRACT OF THE THESIS OF Charles M. Wright for the degree of Master of Science in Water

  • Inter-relationships of vegetation, hydrology and micro-climate in a young, Douglas-fir forest

    Creator:
    Barnard, Holly Rene
    Abstract:
    The links between forests, streamflow, and climate are poorly understood. Despite hundreds of studies over the past 60 years, fundamental questions of forests' effects on the hydrologic cycle remain unanswered. The hydrological cycle involves mutually-dependent biological and physical processes that operate at multiple scales of time and space, and this...
    Resource Type:
    Dissertation
    Full Text:
    , G. D. & Roderick, M. L. (2005) Co-evolution of climate, vegetation, soil and air. Encyclopedia of

  • Andrew Osborn Seminar.pdf

    Creator:
    Osborn, Andrew
    Abstract:
    Pactamycin, a complex aminocyclitol compound produced by Streptomyces pactum, has significant antibiotic, antitumor, and antiplasmodial activity. However, this natural product has not been developed for clinical use due to its high cytotoxicity. Modulation of its biological properties by chemical synthesis has been difficult due to its complex chemical structure. Therefore,...
    Full Text:
    Biosynthesis Andrew Osborn Research Mentors: Dr. Taifo Mahmud, Dr. Kerry McPhail A Bioresource

  • Andrew Osborn Thesis.pdf

    Creator:
    Osborn, Andrew
    Abstract:
    Pactamycin, a complex aminocyclitol compound produced by Streptomyces pactum, has significant antibiotic, antitumor, and antiplasmodial activity. However, this natural product has not been developed for clinical use due to its high cytotoxicity. Modulation of its biological properties by chemical synthesis has been difficult due to its complex chemical structure. Therefore,...
    Full Text:
    By Andrew Osborn An Undergraduate Thesis Submitted to Oregon State University

  • Andrew Colburn Thesis.doc

    Creator:
    Colburn, Andrew J.
    Abstract:
    Chitosan based hemorrhage control dressings provide effective external hemorrhage control while having few side effects. Known residual contaminants present in chitosan formulations include endotoxins and proteins known to stimulate gene expression in the liver. This study investigated gene expression in the liver using rat bio-compatibility models to gain knowledge regarding...
    Full Text:
    Based Hemostatic Control Patch in Rat Models By Andrew J. Colburn A thesis submitted to Oregon

  • Modeling transient thermalhydraulic behavior of a thermionic fuel element for nuclear space reactors

    Creator:
    Al-Kheliewi, Abdullah S.
    Abstract:
    A transient code (TFETC) for calculating the temperature distribution throughout the radial and axial positions of a thermionic fuel element (TFE) has been successfully developed. It accommodates the variations of temperatures, thermal power, electrical power, voltage, and current density throughout the TFE as a function of time as well as...
    Resource Type:
    Dissertation
    Full Text:
    Doctor of Philosophy Completed September 20, 1993 Commencement June, 1994 APPROVED: Andrew

  • Reef Microbiomes of Mo'orea, French Polynesia, a Socio-Ecological Island System

    Creator:
    McConnell, Kaitlin M.
    Abstract:
    At a time of rapid global change, a socio-ecological system (SES) approach can provide a framework through which to quantify and communicate the risks and uncertainties of coupled human-natural systems. Islands, and tropical coral reef islands in particular, can be excellent models for SES research since they may be considered...
    Resource Type:
    Masters Thesis
    Full Text:
    : ______________________________________________________ Andrew R. Thurber At a time of rapid global change, a socio-ecological system (SES

  • The Role of Emerging Pathogens in Amphibian Population Declines : Experimental Evidence

    Creator:
    Hambalek, Natalie M.
    Abstract:
    Rapid rates of biodiversity loss have supported the notion that Earth is experiencing a sixth major extinction event. The causes of worldwide biodiversity loss are multifaceted and context dependent. One of the most prominent groups experiencing population declines and extinctions are amphibians. Several pathogens and their associated diseases are especially...
    Resource Type:
    Masters Thesis
    Full Text:
    AN ABSTRACT OF THE THESIS OF Natalie M. Hambalek for the degree of Master of Science in Zoology

  • The effects of multiple pathogens on amphibians in the Pacific Northwest

    Creator:
    Romansic, John M.
    Abstract:
    The earth is undergoing a “biodiversity crisis” characterized by loss of populations, species, genetic diversity, and ecosystem services. Part of this crisis consists of population declines, extinctions, and increased incidence of deformities in amphibians. It is unknown whether deformities contribute to these declines. Many cases of population declines in amphibians...
    Resource Type:
    Dissertation
    Full Text:
    amphibian larvae John M. Romansic, Kristin A. Diez, Elise M. Higashi and Andrew R. Blaustein

  • Effects of pesticides on amphibians with special reference to the pyrethroidinsecticide, cypermethrin

    Creator:
    Biga, Lindsay M.
    Abstract:
    Pollution by pesticides is a ubiquitous concern for wildlife. The effects of pesticides are especially concerning in aquatic environments, which are particularly vulnerable as they have several exposure routes for the influx of chemicals. These effects are of particular concern as biodiversity loss reaches unprecedented rates. This includes recent declines...
    Resource Type:
    Dissertation
    Full Text:
    pesticides to amphibian larvae: A review Lindsay M. Biga and Andrew R. Blaustein ! ! ! 6