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Filtering by: Has journal Plant Ecology & Diversity Remove constraint Has journal: Plant Ecology & Diversity Academic Affiliation Zoology Remove constraint Academic Affiliation: Zoology Degree Name Doctor of Philosophy (Ph.D.) Remove constraint Degree Name: Doctor of Philosophy (Ph.D.)

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  • Adaptive diversity and divergence at frog antimicrobial peptide loci

    Creator:
    Tennessen, Jacob A.
    Abstract:
    In this dissertation I study evolutionary patterns at genes encoding antimicrobial peptides (AMPs) in frogs. AMPs are short, amphipathic, cationic, secreted proteins that kill bacteria and other pathogens through a non-catalytic mechanism that involves binding to and disrupting the microbial cell membrane. In many animal taxa, positive selection is much...
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    Dissertation
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    presented on February 27, 2009. Title: Adaptive Diversity and Divergence at Frog Antimicrobial Peptide

  • The ecological consequences of the reduction of species diversity : experimental approaches

    Creator:
    Allison, Gary William
    Abstract:
    The influence of loss of diversity on community dynamics and ecosystem functioning has recently received considerable attention. Although study of biodiversity has a long history within ecology, empirical investigations exploring consequences of loss have been rare. Because many factors confound diversity comparisons, experimental manipulations of diversity offer the most direct...
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    Dissertation
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    diversity : experimental approaches AN ABSTRACT OF THE THESIS OF Gary William Allison for the degree of

  • Marine herbivore-plant interactions : the feeding ecology of the sea slug Placida dendritica

    Creator:
    Trowbridge, Cynthia D.
    Abstract:
    The feeding ecology of a common temperate mesoherbivore, the oligophagous sea slug Placida dendritica (Gastropoda: Opisthobranchia: Ascoglossa), was examined from April 1985 to June 1989. Along the central coast of Oregon, Placida consumed three host species: the low intertidal green algae Codium setchellii, C. fragile, and Bryopsis corticulans. Individual slugs...
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    Dissertation
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    significance of my results. Mark Wilson broadened my perspective of plant ecology during a formative period

  • Population genetics, ecology and evolution of a vertebrate metacommunity

    Creator:
    Manier, Mollie Kim
    Abstract:
    Population genetic structure is widespread in many organisms and can be found at small spatial scales. Fine-scale differentiation is the result of ecological and evolutionary processes working together to produce an overall pattern, but the relative importance of these factors in population differentiation is poorly understood. The goals of my...
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    Dissertation
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    -scale spatial genetic structure analyses in plant populations. Molecular Ecology 13:921-935. Wright, S

  • Grazing, nutrients, and marine benthic algae : insights into the drivers and protection of diversity

    Creator:
    Guerry, Anne D., 1973-
    Abstract:
    Two of the most powerful ways in which humans have altered ecosystems are by increasing productivity and changing the densities of important consumers. The bottom-up effects of productivity and the top-down effects of consumers have been identified as primary determinants of biological diversity, though the links between them remain unclear....
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    Dissertation
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    . Species diversity of seed-eating desert rodents in sand dune habitats. Ecology 54:775-787. Chang, F. H

  • Coral-reef fishes : insights into larval dispersal and invasion ecology

    Creator:
    Pusack, Timothy J.
    Abstract:
    Because many coral-reef fishes are observable in situ, are amenable to transplantation, have small home ranges and short generation times, they provide a excellent system to investigate many topics within general ecology, fisheries biology, and conservation biology. The primary goal of this dissertation was to use the coral-reef fishes system...
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    Invasion Ecology AN ABSTRACT OF THE DISSERTATION OF Timothy J. Pusack for the degree of Doctor of

  • The ecological sympatric relations of Plethodon dunni and Plethodon vehiculum

    Creator:
    Dumas, Philip Conrad
    Resource Type:
    Dissertation
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    species have long attracted the attention and interest of students of ecology and steciation. Darwin (5

  • Onset of symbiosis in a cnidarian-dinoflagellate association

    Creator:
    deBoer, Melissa L.
    Abstract:
    Scleractinian corals, like many other cnidarians, engage in intracellular symbiosis with dinoflagellates belonging to the genus Symbiodinium. This association makes invaluable structural and energetic contributions to the marine environment and to the coral reef ecosystem in particular. While many aspects of the cnidarian-dinoflagellate relationship have been well studied, nothing is...
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    general, a coral species living at shallow depths (high-light) will contain higher symbiont diversity

  • The roles of provenance and phylogeny in recruitment, community assembly, and species coexistence in invaded California grasslands

    Creator:
    Brandt, Angela J.
    Abstract:
    Biological invasions pose one of the greatest threats to global biodiversity, but many naturalized invaders coexist with the native community. Community ecology theory provides a framework for understanding the mechanisms by which invaders might coexist with native species or exclude them from the community, thus informing management practices to maximize...
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    Dissertation
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    and diversity of native and exotic plant species in grassland communities at reserves in California

  • Biodiversity : illustrations of some concepts, causes, and consequences

    Creator:
    Russell, Roland B.
    Abstract:
    Careful analysis and thoughtful synthesis will be necessary for expanding the envelope of ecological understanding. This work is my attempt at communicating both of these, in relation to three questions about our understanding of the structure and dynamics of biological diversity. These questions focus on a) advancing our understanding of...
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    ecology in terrestrial plant systems (Diaz and Cabido 2001, Lavorel and Gamier 2002, Cornelissen et al