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Filtering by: Committee Member Poinar, George Remove constraint Committee Member: Poinar, George

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  • Stability and complexity : a reappraisal of the Competitive Exclusion Principle

    Creator:
    Duran, Israel N.
    Abstract:
    Elton (1927) realized that, intuitively at least, nature was complex and stable. And that the last property contributed to the first. This idea was challenged mathematically by Gardner and Ashby (1970) and May (1972), and in the years following various models have attempted to reconcile these opposing views. Unlike previous...
    Resource Type:
    Masters Thesis

  • Dinosaur lung structure and ventilation of the abdominal air sacs in birds

    Creator:
    Sapp, Methea
    Abstract:
    The purpose of this study was to identify any ostelogical features which might prevent paradoxical movement (=lateral collapse) of the abdominal air sacs in birds during inhalation. A combination of 26 fresh and frozen adult bird carcasses representing 10 avian orders were procured from local sources. Dissections of each specimen...
    Resource Type:
    Masters Thesis

  • New perspectives in archosaur biology

    Creator:
    Harwell, Amy E.
    Abstract:
    The respiratory and metabolic biology of dinosaurs is poorly, if at all, reflected in the fossil record. By comparing anatomical features of modern taxa that are functionally linked to specific biology with the remains of theropod dinosaurs (Archosauria: Theropoda) and early birds, we may reasonably infer the physiology of long...
    Resource Type:
    Dissertation