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Filtering by: Contributor Sutherland, Dave Remove constraint Contributor: Sutherland, Dave Decade 2000-2009 Remove constraint Decade: 2000-2009 Degree Name Doctor of Philosophy (Ph.D.) Remove constraint Degree Name: Doctor of Philosophy (Ph.D.)

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  • 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...
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    especially thank Dave Lytle for agreeing to serve as a replacemeiit committee member three weeks prior to my

  • 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...
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    of the Fogarty Creek field site. Dave Schiel and the MERG group provided laboratory and office

  • Three-dimensional motion of the center of mass and energetic cost across a variety of walking speeds : a comparison between adults with and without Down syndrome

    Creator:
    Agiovlasitis, Stamatis
    Abstract:
    It has been previously suggested that the walking pattern of individuals with Down syndrome is inefficient. This is thought to result from increased instability, particularly in the medio-lateral direction, due to the characteristic joint laxity and muscle hypotonia of individuals with DS. Therefore, this work was an attempt to gain...
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    Dissertation
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    , manager of the Benton County Developmental Disabilities Program, and Dave Zaback, executive director of

  • Indirect effects of fishing on predators and their prey

    Creator:
    Stallings, Christopher Derek
    Abstract:
    Predators are fundamentally important for regulating and driving prey population dynamics as well as structuring ecological communities. Over-exploitation of marine resources has caused dramatic depletions of predatory fish species and shifts in marine community composition, with attendant declines in productivity and diversity of marine ecosystems. Despite the important ramifications of...
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    Dissertation
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    Doug DeGross, Dave Paoletti, Tiffany Garcia, and Jessica Hewitt – thanks for keeping me “sane

  • 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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    Lubchenco, Peter McEvoy, Bruce Menge, Phil Rossignol, and Dan Schafer; you make a pretty amazing team. Dave

  • The effects of multiple pathogens on amphibians in the Pacific Northwest

    Creator:
    Romansic, John M.
    Abstract:
    The earth is undergoing a “biodiversity crisis” characterized by loss of populations, species, genetic diversity, and ecosystem services. Part of this crisis consists of population declines, extinctions, and increased incidence of deformities in amphibians. It is unknown whether deformities contribute to these declines. Many cases of population declines in amphibians...
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    Dissertation
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    Tonsfeld, Erin Richmond, Dave Paoletti, Jordan Stewart, Thuy Le, Paul Hill, Brian Moore, Anna Cocker, and

  • 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...
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    great ideas you come up with on a whim, and I’m very excited to continue working with you. Dave

  • Fire severity and vegetation response to fire in riparian areas of the Biscuit and B&B Complex Fires, Oregon

    Creator:
    Halofsky, Jessica E.
    Abstract:
    Fire is the dominant disturbance process in western U.S. forests, and although effects of fire in upland forests are relatively well-studied, there is little information about fire effects on riparian forests, critical areas of the landscape for both habitat and water quality. This dissertation examines different aspects of fire effects...
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    from my advisor, Dave Hibbs, and my committee members, including Paul Doescher, Eric Maloney, Tom

  • On the estimation and application of spatial and temporal autocorrelation in headwater streams

    Creator:
    Som, Nicholas A.
    Abstract:
    This collection of three manuscripts serves to improve methods for collecting, interpreting, and utilizing autocorrelated data from headwater stream networks. Each stream network is comprised of linear segments. These segments lie within a unique branching structure that connects the segments via flowing water, and the connectivity provided by water varies...
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    provided tremendous help with issues related to the 40-basins dataset. I would like to thank Dave Hibbs

  • Advancing marine reserve science : from field experiments to marine conservation planning tools

    Creator:
    Leslie, Heather M.
    Abstract:
    This dissertation focuses on science relevant to the design and implementation of marine reserves. The chapters explore a range of topics related to among-site variation in population, community, and ecosystem dynamics. My results demonstrate the value and feasibility of integrating this knowledge into more comprehensive conservation and management approaches. While...
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    . Thank you to Sally Francis and Mary Strickroth of the Graduate School. Brian Helmuth, Dave Myrold