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  • Modeling sage-grouse habitat using a state-and-transition model

    Creator:
    Evers, Louisa
    Abstract:
    Habitat for wildlife species that depend on sagebrush ecosystems is of great management concern. Evaluating how management activities and climate change may affect the abundance of moderate and high-quality habitat necessitates the development of models that examine vegetation dynamics, but modeling tools for rangeland systems are limited. I developed state-and-transition...
    Resource Type:
    Dissertation
    Full Text:
    assisted in interpreting the model results. Dr. Ron Neilson provided advice on how to use climate

  • Water and solute transport : modeling and application to water conservation in layered soil

    Creator:
    Mohammed, Fareed H. A. N.
    Abstract:
    Sandy soils are among the least productive soils because of their inability to store adequate water for plant growth. Their high percolation rate not only allows water to move quickly beyond the root zone, but also washes nutrients below the reach of plant roots. High evaporation occurs from the soil...
    Resource Type:
    Dissertation
    Full Text:
    , Professor Jonathan Istok, Professor Arsalan Mazaheri, and Professor Ronald Neilson. My deepest thanks and

  • Ecological thresholds, climate extremes, and tree species' distributions across the Pacific coastal United States

    Creator:
    Lintz, Heather E.
    Abstract:
    Species' distributions across the landscape are perhaps the least understood yet most conspicuous features of life on earth. Ecologists have long studied species' distributions; yet, many questions remain about why species occur where they do. Such questions persist largely because species' distributions are complex systems with challenging properties like non-linearity,...
    Resource Type:
    Dissertation
    Full Text:
    to my committee members, Andrew Gray, Alix Gitelman, Ron Neilson, and Steve Sharrow. My