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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
    Full Text:
    conducted in postfire environments. This dissertation helps close that gap by examining citizen-agency

  • 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
    Full Text:
    , environmental protection, and agriculture in one agency. Other states have a two-agency structure

  • Directing ecological succession : the role of competition in restoring semi-arid grasslands dominated by invasive plants

    Creator:
    Mangla, Seema
    Abstract:
    Successful ecosystem restoration requires an understanding of the ecological processes directing succession. One of the challenges in the semi-arid grasslands of western United States is replacement of native species by invasive annual grasses. Solutions to this problem require identifying and manipulating ecological processes that direct succession to favor desired vegetation....
    Resource Type:
    Dissertation
    Full Text:
    Environmental Science presented on August 27, 2010. Title: Directing Ecological Succession: The Role of

  • 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
    Full Text:
    collected to assess stream condition as part of a national study conducted by the U.S. Environmental

  • Pollination biology and pollinator alternatives in mermaid meadowfoam (Limnanthes alba Hartw. ex Benth.)

    Creator:
    Jahns, Thomas R.
    Abstract:
    Meadowfoam (cultivar Mermaid) is an entomophilous winter annual oilseed crop that has historically produced an average of only two of five seeds per flower. Reference to inadequate meadowfoam pollination exists in the literature, but quantitative evidence is lacking. Studies were undertaken to: 1) quantify meadowfoam pollination requirements and 2) evaluate...
    Resource Type:
    Dissertation
    Full Text:
    environmental conditions, up to flower initiation (day-45), were identical to those re- ported by Jahns and

  • Influences on State-funded categorical enrollment patterns in thirteen of Oregon's community colleges

    Creator:
    Smart, Ann Dillie
    Abstract:
    The purpose of this investigation was to examine the influence of selected historical, fiscal, and organizational factors on enrollment patterns in Oregon Community Colleges during the academic years 1978-79, 1981-82, and 1984-85. Oregon was selected insofar as it is one of the few remaining states which observes the principle of...
    Resource Type:
    Dissertation
    Full Text:
    Influences on State-funded categorical enrollment patterns

  • Isolation of a natural antioxidant from shrimp waste

    Creator:
    Li, Shiao Jing
    Abstract:
    Shrimp waste samples were extracted with a variety of organic solvents. Each fraction was measured for antioxidant activity by determining the rate of oxidation of β-carotene-linoleic acid in an emulsion system. An ethanol extract exhibited the highest antioxidant activity. Purification of the most active fraction was accomplished by thin layer...
    Resource Type:
    Dissertation
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    coloration in trout was increased by feeding carotenoid-rich diets, including shrimp waste. A U.S. Dept

  • Experimental shielding evaluation of the radiation protection provided by residential structures

    Creator:
    Dickson, Elijah D.
    Abstract:
    The human health and environmental effects following a postulated accidental release of radioactive material to the environment has been a public and regulatory concern since the early development of nuclear technology and researched extensively to better understand the potential risks for accident mitigation and emergency planning purposes. The objective of...
    Resource Type:
    Dissertation
    Full Text:
    Protection Provided by Residential Structures

  • 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
    Full Text:
    WESTERN U.S. by Toby Primbs A DISSERTATION submitted to Oregon State