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Filtering by: Creator Ouedraogo, A. Remove constraint Creator: Ouedraogo, A. Non-Academic Affiliation Oregon State University. Graduate School Remove constraint Non-Academic Affiliation: Oregon State University. Graduate School

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  • The effects of an emerging pathogen on amphibian host behaviors and interactions

    Creator:
    Han, Barbara A.
    Abstract:
    Contemporary environmental change encompasses massive biodiversity loss and increasing numbers of emerging diseases worldwide. As part of a global biodiversity crisis, amphibians are disappearing at unprecedented rates. Batrachochytrium dendrobatidis is an emerging infectious pathogen prominently associated with many declines. Chapter 1 reviews the past decade of research on this system...
    Resource Type:
    Dissertation
    Full Text:
    DISSERTATION OF Barbara A. Han for the degree of Doctor of Philosophy in Zoology presented on September 26

  • Faidherbia albida Water Use and Impacts on Teff Growth in a Sub-humid Environment in Mojo, Ethiopia

    Creator:
    Krampien, Jeannette T.
    Abstract:
    Faidherbia albida is a widely used tree species in sub-Saharan Africa, promoted for use in parkland agroforestry systems based on reduced competition with crops during the rainy season from its reverse leafing phenology and positive effect on soil fertility. Increases in growth and yield have been reported for crops such...
    Resource Type:
    Masters Thesis
    Full Text:
    , Teklehaimanot Z, and Ouedraogo SJ. 2002. Millet production under pruned tree crowns in a parkland system in

  • Identification and characterization of vasotocin and mesotocin peptides and receptors

    Creator:
    Searcy, Brian T.
    Abstract:
    The neurohypophysial peptide system is involved in modulating a variety of physiological, neurological, and behavioral responses in vertebrates. The principal forms of these peptides in non-mammalian tetrapods are vasotocin (VT) and mesotocin (MT). The studies described in this thesis used pharmacological, molecular, and biochemical techniques, along with phylogenetic analyses, to...
    Resource Type:
    Dissertation
    Full Text:
    peptide system is involved in modulating a variety of physiological, neurological, and behavioral

  • The Biogeochemistry of nitrogen and phosphorus cycling in native shrub ecosystems in Senegal

    Creator:
    Dossa, Ekw'e Lokossou, 1960-
    Abstract:
    Two native shrub species (Piliostigma reticulatum and Guiera senegalensis) are prominent vegetation components in farmers’ fields in Senegal. However, their role in nutrient cycling and ecosystem function has largely been overlooked. A study including both laboratory and field experiments was conducted to evaluate potential biophysical interactions of the two shrub...
    Resource Type:
    Dissertation
    Full Text:
    nutrient cycling and ecosystem function has largely been overlooked. A study including both laboratory

  • Hydrological consequences of two native shrubs in semi-arid Senegal : patterns, processes, concepts and methods

    Creator:
    Kizito, Fred
    Abstract:
    Water availability is a critical limiting element in semi-arid ecosystem productivity and presents particular challenges in Sahelian countries such as Senegal. The landscapes are characterized by the presence of two common semi-arid shrubs (Piliostigma reticulatum and Guiera senegalensis), both of which may be important hydraulic regulators in these water-limited ecosystems....
    Resource Type:
    Dissertation
    Full Text:
    Abstract approved: Redacted for Privacy Maria Ines Dragila Water availability is a critical limiting