Search Constraints

Start Over
Filtering by: Creator Meigs, Andrew J. Remove constraint Creator: Meigs, Andrew J. Advisor Lubchenco, Jane Remove constraint Advisor: Lubchenco, Jane Degree Level Doctoral Remove constraint Degree Level: Doctoral

Search Results

  • 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....
    Resource Type:
    Dissertation
    Full Text:
    me. Also, this work was supported by grants from the Andrew W. Mellon Foundation, the David and

  • Effects of environmental stress on intertidal mussel reproduction

    Creator:
    Petes, Laura E.
    Abstract:
    Environmental stress can negatively affect the ability of organisms to reproduce. Energetic trade-offs exist in all organisms, and under stress, energy may be allocated away from reproduction and towards physiological defense and repair mechanisms. The rocky intertidal environment is ideal for investigating the influence of environmental stress, as organisms are...
    Resource Type:
    Dissertation
    Full Text:
    Oceans (PISCO) and from the National Science Foundation. Support from the Andrew W. Mellon Foundation

  • 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...
    Resource Type:
    Dissertation
    Full Text:
    Foundation and the David and Lucile Packard Foundation, as well as the Andrew W. Mellon Foundation

  • Evolutionary and ecological interactions affecting seaweeds

    Creator:
    Olson, Annette M.
    Abstract:
    The term "interaction" in evolutionary biology and ecology describes the relationships among variables in two classes of causal models. In the first, "interaction" refers to the influence of a single putatively causal variable on a variable of interest. In the second class of models, the term applies when a third...
    Resource Type:
    Dissertation
    Full Text:
    . Lubchenco and D. Carlson (OCE-8600523), by a grant from the Andrew W. Mellon Foundation to J. Lubchenco

  • Linking marine communities and ecosystems : invertebrates mediate nutrient availability in intertidal communities

    Creator:
    Bracken, Matthew E.
    Abstract:
    While community ecologists have traditionally focused on local-scale processes, it has become apparent that a broader perspective, which explores the community-level ramifications of material fluxes within and between ecosystems, is necessary to effectively evaluate bottom-up influences on community structure and dynamics. In this dissertation, I employed ecosystem principles to understand...
    Resource Type:
    Dissertation
    Full Text:
    ;I,J Co-Major Professor, gy Co-Major Pfer, representing Zoology Chair of The Department of Zoology

  • Linkages between mangrove forests and coral reefs : quantifying disturbance effects and energy flow between systems

    Creator:
    Granek, Elise F.
    Abstract:
    Interface habitats are considered valuable natural systems, tightly linked to adjacent habitats through the flow of matter and energy. However, there is limited research on mechanisms of connectivity such as movement of organisms and particulate matter and ways in which anthropogenic disturbance to interface habitats may affect immediate and adjacent...
    Resource Type:
    Dissertation
    Full Text:
    diligence with 100s of water samples; and to Andrew Bush for his flexibility to jump from task to task

  • Oceanographic influences on rocky intertidal communities : coastal upwelling, invertebrate growth rates, and keystone predation

    Creator:
    Sanford, Eric (Eric David)
    Abstract:
    The influence of large-scale processes on natural communities has become one of the central issues of modern ecology. I combined field and laboratory studies to investigate the effects of variation in coastal upwelling on rocky intertidal communities along the central Oregon coast. I examined whether the growth of intertidal barnacles...
    Resource Type:
    Dissertation
    Full Text:
    Biology, and an Andrew W. Mellon Foundation grant to J. Lubchenco and B. Menge. TABLE OF CONTENTS

  • 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:
    Science Foundation projects OCE 88-11369 amd OCE 92-17459 to Bruce Menge, and an Andrew Mellon

  • Macroscale to local scale variation in rocky intertidal community structure and dynamics in relation to coastal upwelling

    Creator:
    Freidenburg, Tess L.
    Abstract:
    Understanding how large-scale processes (>100 kms) influence ecological communities is currently a major focus in ecology. In marine systems, coastal upwelling, a large-scale oceanographic process in which surface water pushed offshore by winds is replaced by cold, nutrient-rich water from depth, appears to cause variation in rocky intertidal communities. Along...
    Resource Type:
    Dissertation
    Full Text:
    support was provided by grants from the Andrew W. Mellon Foundation and the David and Lucile Packard

  • 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:
    from a Andrew W. Mellon grant to Bruce Menge and Jane Lubchenco. Support from National Science