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Filtering by: Funding statement U.S. Environmental Protection Agency Remove constraint Funding statement: U.S. Environmental Protection Agency Degree Name Doctor of Philosophy (Ph.D.) Remove constraint Degree Name: Doctor of Philosophy (Ph.D.)

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  • Citizen-agency interactions : an investigation of postfire environments

    Creator:
    Olsen, Christine Shaw
    Abstract:
    Wildfire management has grown increasingly complex in recent years, particularly in the West and in the Wildland-Urban Interface (WUI) where a steady population growth has resulted in greater risk to people and property. Recent trends suggest the process of recovering from large fires (>100,000 acres) will become increasingly important to...
    Resource Type:
    Dissertation
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    from citizens and agency personnel in five postfire settings in the western U.S. Results highlight

  • Evaluation of the intergovernmental relationships between national and state wetland regulatory agencies within wetland regulatory units

    Creator:
    Taylor, Ryan W
    Abstract:
    Since the 1890s, American federalism has been perceived as being unique in the world by having two different levels of government operating within the same jurisdiction without influencing one another. Modern scholars call into question the validity of this basic assumption, but few have published quantitative evidence to reject its...
    Resource Type:
    Dissertation
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    ............................................................ U.S. Environmental Protection Agency USFWS

  • Diagnosing barriers to climate change adaptation Oregon state agencies

    Creator:
    Dello, Kathie D.
    Abstract:
    Despite a history of leadership and creative approaches to environmental issues, Oregon has struggled to adequately prepare for the current and future impacts of climate change. Oregon faces barriers and limits to understanding, planning, and implementing climate adaptation that can be examined and quantified. Climate change makes for an additional...
    Resource Type:
    Dissertation
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    , environmental protection, and agriculture in one agency. Other states have a two-agency structure

  • Essays on environmental productivity

    Creator:
    Bellenger, Moriah J., 1980-
    Abstract:
    The following three essays explore the use of the directional output distance function (Chambers et al., 1996), an economic model originally developed to measure efficiency and productivity for multi-input and multi-output production processes, to assess performance for multi-attributed environmental processes. The first essay illustrates the use of the directional output...
    Resource Type:
    Dissertation
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    method to a set of watershed data and compare our results to the existing U.S. Environmental Protection

  • Semi-volatile organic compounds as molecular markers for atmospheric and ecosystem transport

    Creator:
    Genualdi, Susan A.
    Abstract:
    The use of semi-volatile organic compounds (SOCs) as molecular markers to identify the contributions of regional and long-range atmospheric transport, as well as current and historic sources, and contaminant deposition in remote ecosystems of the Western U.S. was investigated. Trans-Pacific air masses influenced by Siberian biomass burning events had elevated...
    Resource Type:
    Dissertation
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    ecosystems of the Western U.S. was investigated. Trans-Pacific air masses influenced by Siberian biomass

  • Culturing uncultured environmental microorganisms

    Creator:
    Connon, Stephanie A.
    Abstract:
    Research on natural environments, over the last decade, is replete with microbial diversity studies that used culture-independent approaches. The cloning and sequencing of the 16S rRNA genes has been the driving force in the expansion of awareness about the great diversity of previously undiscovered microorganisms. Well-known uncultured groups of microorganisms...
    Resource Type:
    Dissertation
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    Environmental Microorganisms. Abstract (ephefJ. Giovannoni Research on natural environments, over the last

  • Assessment of exposure and response to atmospherically-derived contaminants in U.S. Arctic freshwater fish

    Creator:
    Allen-Gil, Susan M.
    Abstract:
    The Arctic has long been considered to be a pristine environment, far from population centers and pollution sources. The detection of synthetic organochlorine compounds in various elements of the Arctic food web has confirmed the global dispersion of pollutants, particularly of persistent compounds such as organochlorines and heavy metals. Levels...
    Resource Type:
    Dissertation
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    Administration's Status and Trends Program and the U.S. Environmental Protection Agency's Environmental

  • Communicating the wildland fire message : an investigation of agency outreach strategies

    Creator:
    Toman, Eric Lee
    Abstract:
    Wildfire impacts have increased in recent years. The management response outlined by recent policy initiatives (e.g., the National Fire Plan, Healthy Forests Restoration Act) emphasizes the use of prescribed fire and mechanized thinning to reduce the risk of future fire events. These policies also call for an unprecedented level of...
    Resource Type:
    Dissertation
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    Wildland Fire Message: An Investigation of Agency Outreach Strategies Abstract approved: Bruce A

  • Essays on location decisions and carbon sequestration strategies of U.S. firms

    Creator:
    Wu, Caiwen
    Abstract:
    Location is a critical component of business decisions. A firm's location decision may be influenced not only by market forces, such as the location of input suppliers, output processors and competitors, but also by government policies if such policies impact their expected profits and are applied non-uniformly across space. Likewise,...
    Resource Type:
    Dissertation
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    Clean Air Act (CAA), the Environmental Protection Agency (EPA) has established National Ambient Air

  • Trans-Pacific and regional atmospheric transport of anthropogenic semivolatile organic compounds in the western U.S.

    Creator:
    Primbs, Toby
    Abstract:
    The atmospheric transport of anthropogenic semivolatile organic compounds (SOCs) from Asian sources to the Western U.S. was investigated. In addition, the SOC extraction method was optimized. Hansen solubility parameter plots were used to aid in the pressurized liquid extraction (PLE) solvent selection of air sampling media in order to minimize...
    Resource Type:
    Dissertation
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    Organic Compounds in the Western U.S. APPROVED : Staci L. Simonich The atmospheric