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Filtering by: Creator Bills, Bruce G. Remove constraint Creator: Bills, Bruce G. Committee Member Menge, Bruce Remove constraint Committee Member: Menge, Bruce Decade 1990-1999 Remove constraint Decade: 1990-1999

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  • Formation and maintenance of fish assemblages in a high desert Oregon stream

    Creator:
    Pearsons, Todd N.
    Abstract:
    Considerable controversy exists about how fish assemblages are organized. I explicitly took fish movement into account while I studied the effects of disturbance, habitat complexity, and predation at different times of the summer to understand the major factors influencing assemblage structure in a high desert Oregon stream. The effects of...
    Resource Type:
    Dissertation
    Full Text:
    members Doug Markle, Pete Bisson, Bob Beschta, Rosemary Wander, and Bruce Menge provided direction and

  • The biology of a shallow-water methane vent

    Creator:
    Juhl, Andrew R.
    Abstract:
    In September of 1989, the site of an active seafloor methane vent was confirmed approximately 20 km off the coast of Oregon in shelf waters 135 m deep. The location of the vent had been described to Oregon State University oceanographers by a local commercial fisherman. Preliminary observations in 1989...
    Resource Type:
    Masters Thesis
    Full Text:
    the project were R. Collier, L. Kulm, M. Lilley, W. Pearcy, R. Starr, D. Stein and G. Taghon. Access

  • Ecological aspects of kin discriminating behavior with implications of functional value

    Creator:
    Hokit, D. Grant
    Abstract:
    To assess the context dependence of kin discriminating behavior, I examined kin-biased aggregation behavior in tadpoles of R. cascadae in different ecological conditions. I manipulated food distribution, predator presence, thermal heterogeneity, and relatedness in a multifactorial mesocosm experiment. All four factors interacted to influence tadpole dispersion. My results suggest that...
    Resource Type:
    Dissertation
    Full Text:
    committee; Andrew Blaustein, Bruce Menge, Peter Dawson, Joseph Beatty, Robert Anthony and William Pearcy

  • The effects of pathogens, UV-B radiation, and introduced species on amphibians in the Pacific Northwest

    Creator:
    Kiesecker, Joseph Michael
    Abstract:
    I examined two amphibian communities to assess factors that may impact amphibian biodiversity. The results suggest that the potential factors which influence the maintenance of amphibian biodiversity are multi-faceted and thus, attempts to understand these factors must reflect these complexities. I investigated factors that influenced the susceptibility of western toad...
    Resource Type:
    Dissertation
    Full Text:
    Blaustein, Bruce Menge, Joseph Beatty, Dede Olson, Gordon Reeves, and Douglas Derryberry. During my