Search Constraints

Start Over
Filtering by: Creator Bills, Bruce G. Remove constraint Creator: Bills, Bruce G. Academic Affiliation Zoology Remove constraint Academic Affiliation: Zoology Committee Member Menge, Bruce Remove constraint Committee Member: Menge, Bruce

Search Results

  • Indirect effects of ultraviolet-B radiation on larval amphibians as mediated by food quality and trophic interactions

    Creator:
    Scheessele, Erin A.
    Abstract:
    Ultraviolet-B radiation (UVB) is an abiotic stressor in both terrestrial and aquatic systems. The stratospheric ozone layer, depleted due to anthropogenic activities and the cause of elevated UVB at earth's surface over the last four decades, is predicted to recover by 2065. However, UVB levels in aquatic systems may continue...
    Resource Type:
    Dissertation
    Full Text:
    Oxford comma camp and I do not. Bruce Menge generously made his lab resources and protocols available

  • The ecological and behavioral dynamics of breeding in three sympatric anuran amphibians

    Creator:
    Olson, Deanna H.
    Abstract:
    Breeding ecology and behavior were investigated in a field study of three sympatric anuran amphibians in the Oregon Cascade Mountains: the western toad (Bufo boreas), the Cascades frog (Rana cascadae) and the Pacific treefrog (Hyla regilla). A comprehensive study of the western toad mating system was conducted at three populations...
    Resource Type:
    Dissertation
    Full Text:
    Ramsey, "Doc" R.M. Storm, Bruce Menge, David Sims and Bill Stephen. Other faculty members of the

  • Early succession in beds of the red alga, Iridaea cornucopiae Post. & Rupr. (Gigartinaceae) : alternate pathways

    Creator:
    Olson, Annette M.
    Abstract:
    Multiple successional sequences have been observed following disturbance in communities on marine hard substrata. Observations of the turf-forming alga, Iridaea cornucopiae Post. & Rupr. (Gigartinaceae), suggest that I. cornucopiae may assume its dominance by its ability to vegetatively pre-empt space. High limpet densities in the natural community, suggest that I....
    Resource Type:
    Masters Thesis
    Full Text:
    and encouragement. Bruce Menge and Fred Ramsey, members of my thesis committee, gave generously of

  • Effects of the invasive Pacific red lionfish Pterois volitans on native Atlantic coral-reef fish communities

    Creator:
    Albins, Mark A.
    Abstract:
    Predatory lionfishes (Pterois volitans and P. miles) were introduced to Florida waters during the mid to late 1980s, and eventually established self-sustaining breeding populations in the tropical western Atlantic. These invasive species are now widespread along the southeastern seaboard of the United States, across the Caribbean Sea, and in the...
    Resource Type:
    Dissertation

  • 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...
    Resource Type:
    Dissertation
    Full Text:
    questions were always appreciated. I felt like a valued student. Bruce Menge opened up my eyes to

  • Factors affecting the dynamics and regulation of coral-reef fish populations

    Creator:
    Webster, Michael Scott
    Abstract:
    Ecologists have long questioned why fluctuating populations tend to persist rather than go extinct. Populations that persist indefinitely are regulated by mechanisms that cause demographic density dependence, which works to bound fluctuation above zero. In a series of studies, I have sought to determine the processes and mechanisms that regulate...
    Resource Type:
    Dissertation
    Full Text:
    particular, I thank Bruce Menge for teaching me so much about science and for being a friend, Fred Ramsey

  • Multiple stressors and amphibian population declines

    Creator:
    Hatch, Audrey C.
    Abstract:
    In the past decade, declines in amphibian populations have captured scientific and popular interest. The causes of the declines are likely to be complex and involve interactions between several environmental stressors. Using multifactorial experiments, I investigated the combined effects of several anthropogenic stressors on developing amphibians in Oregon, USA. In...
    Resource Type:
    Dissertation
    Full Text:
    has been important in my development as a scientist. My committee members, Drs. Bruce Menge, Paul

  • 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

  • Drought, dispersal, and community dynamics in arid-land streams

    Creator:
    Bogan, Michael T.
    Abstract:
    Understanding the mechanisms that regulate local species diversity and community structure is a perennial goal of ecology. Local community structure can be viewed as the result of numerous local and regional processes; these processes act as filters that reduce the regional species pool down to the observed local community. In...
    Resource Type:
    Dissertation
    Full Text:
    Arizona companion because of her field work on the Bill Williams River, near my house. Thanks to her