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Filtering by: Creator Randall, Warren R. Remove constraint Creator: Randall, Warren R. Degree Field Fisheries Science Remove constraint Degree Field: Fisheries Science

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  • Fish and amphibian use of intermittent streams within the upper Willamette Basin, Oregon

    Creator:
    Colvin, Randall William
    Abstract:
    In the fall through spring of 2002/03 and 2003/04, the composition of fish and amphibian communities were examined in intermittent streams in the upper Willamette river basin in western Oregon. I recorded standard aquatic habitat variables and water nutrient concentrations (nitrate and phosphate) and correlated them with fish and amphibian...
    Resource Type:
    Masters Thesis
    Full Text:
    Randall William Colvin for the degree of Master of Science in

  • Classification of Icelandic watersheds and rivers to explain life history strategies of Atlantic salmon

    Creator:
    Gudjonsson, Sigurdur
    Abstract:
    A hierarchical classification system of Iceland's watersheds and rivers is presented. The classification is based on Iceland's substrate, climate, water, biota, and human cultural influences. The geological formations of Iceland are very different in character depending on their age and formation history. Three major types of formations occur: Tertiary, Plio-Pleistocene,...
    Resource Type:
    Dissertation
    Full Text:
    Abstract approved: 4 Redacted for Privacy Charles E. Warren A hierarchical classification system of

  • Bottom-up Drivers of Primary Producers and Predator Populations in Oregon Streams

    Creator:
    Kaylor, Matthew J.
    Abstract:
    Humans have drastically altered the physical habitat and food web structure of stream ecosystems. Two major impacts humans have had on Pacific Northwest streams are modification of streamside forests (as a result of agriculture, land development, and timber harvest), and declines in the return of wild anadromous salmon to headwater...
    Resource Type:
    Dissertation
    Full Text:
    . CONTRIBUTION OF AUTHORS Dana R. Warren contributed to all aspects of this dissertation and associated

  • Effects of Stage 0 Stream Restoration on Aquatic Macroinvertebrate Production

    Creator:
    Jennings, Jeremy C.
    Abstract:
    Contemporary stream restoration efforts increasingly prioritize restoring natural stream processes to regain lost ecosystem functions. Stage 0 stream restoration resets disturbed, channelized streams to a theoretical pre-disturbance state (“stage zero”). It is assumed that this valley-scale restoration/disturbance will restore natural abiotic and biotic processes, leading to greater primary and secondary...
    Resource Type:
    Masters Thesis
    Full Text:
    Jonathan Armstrong, Dana Warren, and James Ryan Bellmore for their mentorship, support, enthusiasm, and

  • Life history and evolutionary adaptation of Pacific salmon and its application in management

    Creator:
    Wevers, Mary Jo
    Abstract:
    An approach to understanding and managing anadromous salmon, steelhead, and sea-run cutthroat trout (Oncorhynchus spp.) based on life history and evolutionary adaptive capacities of species and stocks is presented. Species, stocks, and local populations are viewed as systems that are continuously adapting to changing environmental conditions. They have the potential...
    Resource Type:
    Dissertation
    Full Text:
    . Warren An approach to understanding and managing anadromous salmon, steelhead, and sea-run cutthroat

  • Bioenergetic evaluation of diel vertical migration by bull trout

    Creator:
    Eckmann, Madeleine
    Abstract:
    I evaluated hypotheses related to growth as a driver of depth use and diel vertical migration by bull trout (Salvelinus confluentus) in a thermally stratified reservoir. I applied a bioenergetic model to evaluate growth of bull trout in relation to potential patterns of diel depth use by bull trout in...
    Resource Type:
    Masters Thesis
    Full Text:
    Flitcroft and Dana Warren, also patiently provided help and guidance. I’m so appreciative I had committee

  • Breeding site selection by coho salmon (Oncorhynchus kisutch) in relation to large wood additions and factors that drive reproductive success

    Creator:
    Clark, Steven
    Abstract:
    The fitness of female Pacific salmon (Oncorhynchus spp.) with respect to breeding behavior can be partitioned into at least four components: survival to reproduction, competition for breeding sites, success of egg incubation, and suitability of the local environment near breeding sites for early rearing of juveniles. Accordingly, breeding sites should...
    Resource Type:
    Masters Thesis
    Full Text:
    Dana Warren for helping with my study design, providing fantastic insight along the way, and for

  • Effects of sampling design, estimators, and variability on groundfish management in Oregon

    Creator:
    Crone, Paul R. Jr
    Abstract:
    Sampling error associated with estimates of species composition and age composition of commercial groundfish landings in Oregon from 1989 to 1991 is documented to evaluate the impact of variable landing data on fisheries management and monitoring programs. The statistical reliability and bias associated with two multistage sampling designs are investigated...
    Resource Type:
    Dissertation
    Full Text:
    groundfish management in Oregon AN ABSTRACT OF THE THESIS OF Paul R. Crone Jr. for the degree of Doctor of

  • Beyond the Benthos: The effects of stream restoration on habitat complexity and aquatic and riparian macroinvertebrate assemblages

    Creator:
    Lotz, Kelsey L.
    Abstract:
    Aquatic and riparian systems in the western United States have been highly modified by anthropogenic impacts since Euro-American settlement. Ecological restoration is a practice that has been widely conducted around the world to mitigate the degradation of these systems. The majority of stream restoration efforts have focused on improving in-stream...
    Resource Type:
    Masters Thesis
    Full Text:
    . Dana Warren, Dr. David Lytle and Dr. Marta Torres for their help in this process. Thank you also to

  • Energy utilization by young grass carp fed different diets

    Creator:
    Cai, Zhengwei
    Abstract:
    Effects of diet on food energy utilization by grass carp fed aquatic plants or formulated diets with varied lipid sources and levels are presented in three manuscripts. Significant effects of diet on food consumption, digestion, growth and muscle fatty acid (FA) composition of fingerling diploid grass carp fed aquatic macrophytes...
    Resource Type:
    Dissertation
    Full Text:
    YOUNG GRASS CARP FED DIFFERENT DIETS Redacted for privacyAbstract approved: Lawrence R. Curtis