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Filtering by: Creator Hale, Patricia L. Remove constraint Creator: Hale, Patricia L. Advisor Mccune, Bruce Remove constraint Advisor: Mccune, Bruce

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  • Shrub epiphyte communities in relation to stand management in forests of western Oregon

    Creator:
    Rosso, Abbey L.
    Abstract:
    This dissertation describes the epiphyte communities on tall shrubs in forests of western Oregon, with a focus on potential effects of management practices on these communities. Shrubs and other hardwoods have recently gained recognition as hotspots of diversity for epiphytes in young conifer forests of the region. Yet little is...
    Resource Type:
    Dissertation
    Full Text:
    Relation to Overstory Thinning in Forests of Western Oregon Abbey L. Rosso, Patricia S. Muir, and Bruce

  • Community gradients of Arctic macrolichens in relation to succession, grazing and the environment

    Creator:
    Holt, Emily A.
    Abstract:
    The purpose of this dissertation was to define macrolichen community gradients in relation to succession, grazing and the environment. First, species scores indicating when macrolichen species appeared following disturbance were derived from the literature. Weighted averaging of these data with a community matrix created a successional score for each sample...
    Resource Type:
    Dissertation

  • Yosemite region nitrogen deposition and patterns in the composition of lichen communities

    Creator:
    Hutten, Martin
    Abstract:
    This dissertation describes patterns in epiphytic macrolichen community composition along a nitrogen deposition gradient in the Yosemite region of the Sierra Nevada in California. This region is part of the largest federal air quality Class 1 designated air-shed in the western United States, covering the entire crest of the Sierra...
    Resource Type:
    Dissertation

  • Tree mortality in midwestern oak-hickory forests : rates and processes

    Creator:
    Pedersen, Brian S.
    Resource Type:
    Dissertation
    Full Text:
    and thesis research; Patricia S. Muir (Department of Botany and Plant Pathology), a member of my

  • Riparian lichens of northern Idaho

    Creator:
    Hutchinson, Jenifer L.
    Abstract:
    Riparian forests in the Idaho Panhandle, north of Whitebird, were surveyed for rare riparian lichen species. The region was stratified into nine geographic units and by stream size. Eighty-one plots were surveyed for lichen community, stand and river characteristics. Variables important to lichen community composition included regional differences, elevation, climatic...
    Resource Type:
    Masters Thesis
    Full Text:
    AN ABSTRACT OF THE THESIS OF Jenifer L. Flutchinson for the

  • Lichen Studies of Tropical Dry Forest: A Systematic and Ecological Approach

    Creator:
    Miranda-González, Ricardo
    Abstract:
    In recent years, our ecological knowledge of tropical dry forests has increased dramatically. However, whole components of the ecosystem, like lichenized fungi, remain mostly unknown. Crustose lichens in these forests are so abundant, that they are responsible for the characteristic appearance of a “white bark forest” during the dry season....
    Resource Type:
    Dissertation
    Full Text:
    years, even in the presence of catastrophic events like the category 4 hurricane Patricia. Lichen

  • Lichen Biomonitoring from Valley to Alpine in Central and Southern California

    Creator:
    Kovasi, Adrienne I.
    Abstract:
    In the mountains of central and southern California, high elevation wilderness areas lack epiphytic lichens that can be used to inform us about atmospheric deposition in multiple ways. Epiphytic lichens are capable of accumulating elements proportionally to the local atmospheric concentration, establishing them as commonly used biomonitor of key elements....
    Resource Type:
    Masters Thesis
    Full Text:
    substrates (Ahmadjian & Hale, 1973). Lichens lack specialized tissues to filter pollutants, causing them to

  • Tackifier Type and Concentration have Varying Impacts on Growth of Dryland Mosses

    Creator:
    Blankenship, Wyatt D.
    Abstract:
    There is growing interest in using biocrusts (assemblages of cyanobacteria, lichens, mosses, and other taxa in various proportions covering the upper few millimeters of the soil surface) to assist in restoring ecosystem function and native plant communities in dryland ecosystems. Biocrusts can be transplanted and established using jute or thatch,...
    Resource Type:
    Masters Thesis
    Full Text:
    my frequent questions. Patricia Haggerty shared her expertise in remote sensing to develop an

  • Lichen communities and caribou habitat in Denali National Park and Preserve, Alaska, USA

    Creator:
    Nelson, Peter R.
    Abstract:
    Lichens play many important roles in subarctic terrestrial ecosystems by fixing nitrogen, colonizing rock and gravel, stabilizing otherwise bare soil, adding significantly to vegetation biodiversity and serving as the primary food for caribou in the winter. In these chapters, I analyzed lichen community and ecological trait structure along environmental gradients,...
    Resource Type:
    Dissertation
    Full Text:
    occasionally all three 25 2 1 (Ahmadjian & Hale 1973). Lichens play important ecological roles in

  • Bioindication of air quality in forests of northern and central California using epiphytic macrolichen communities

    Creator:
    Jovan, Sarah
    Abstract:
    The unifying purpose of this dissertation was to describe, model, and map relationships between epiphvtic macrolichen communities and air quality in Ibrests of northern and central California. First, multivariate analyses were used to subdivide the large study area into three model areas with similar climate, topography, and lichen communities: the...
    Resource Type:
    Dissertation
    Full Text:
    ........................................................................................................ Relationship of axis I to NI-L; and nitrophile indices ................................ 48 Relationship of axis