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  • 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...
    Resource Type:
    Dissertation
    Full Text:
    helped me fill those holes. His enthusiasm for all aspects of ecology, his rigor, and his humor were

  • Patterns and dynamics of context-dependency in the marine rocky intertidal

    Creator:
    Berlow, Eric Layani
    Abstract:
    As ecologists are being called upon to predict the consequences of human perturbations to natural communities, an important goal is to understand what factors drive variability or consistency in nature. In the rocky intertidal of San Juan Island, Washington, a comparative experimental approach was used to investigate spatial and temporal...
    Resource Type:
    Dissertation
    Full Text:
    Patterns and dynamics of context-dependency in the marine

  • Prey selection by the tropical marine snail Thais melones : a study of the effects of interindividual variation and foraging experience on growth and gonad development

    Creator:
    West, Lani
    Abstract:
    I studied the feeding behavior of marked individuals of the carnivorous marine snail Thais melones in a rocky shore habitat of Pacific Panama. The population of snails consume a variety of invertebrate species such as bivalves, limpets, and polychaetes. Individuals exhibited a range of diet breadth, with some specialized, but...
    Resource Type:
    Dissertation
    Full Text:
    individuals in a population of tropical marine snails, and how this affects growth and reproduction. The

  • Community organization and succession in rocky intertidal surfgrass beds

    Creator:
    Turner, Teresa
    Abstract:
    Succession and organization of rocky intertidal zone surfgrass beds (Phyllospadix scouleri Hook) were examined experimentally at two sites on the Oregon coast. The interaction of three attributes of the plant -- high persistence, high preemption, and slow recovery -- strongly influences the organization of surfgrass beds. Permanent plots indicate that...
    Resource Type:
    Dissertation
    Full Text:
    indicate that surfgrass is persistent. Comparisons of experimental surfgrass removal and control plots

  • A limpet kelp interaction : description and definition

    Creator:
    Yates, Kenneth R.
    Abstract:
    The interaction between the acmaeid limpet, Collisella instabilis and the subtidal laminarian, Pterygophora californica involves positive effects on the limpet population and subtle positive or null effects on the kelp. Collisella, which is found only on Pterygophora and another kelp, Laminaria dentigera (Kjellman, 1889), may exploit several features of the...
    Resource Type:
    Masters Thesis
    Full Text:
    (+,+). Until recently, the emphasis in ecology has been on theoretical and empirical studies of predator-prey