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Filtering by: Subject Hatchery fishes -- Oregon Remove constraint Subject: Hatchery fishes -- Oregon Degree Field Fisheries Science Remove constraint Degree Field: Fisheries Science Degree Name Doctor of Philosophy (Ph.D.) Remove constraint Degree Name: Doctor of Philosophy (Ph.D.)

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  • The importance of egg size for the diversity of salmonids

    Creator:
    Leblanc, Camille A.
    Abstract:
    Understanding the origin and nature of intra specific biodiversity enables us to better conserve and manage animal populations. Biological diversity is seen at different scales and for different traits such as behavior, morphology, physiology, and life history. Behavior is especially important since behavioral changes are believed to precede changes in...
    Resource Type:
    Dissertation
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    would like to thank all the people at the Oregon Hatchery Research Center (OHRC), Oregon Department of

  • Settlement, distribution, growth, and mortality of juvenile dover sole (Microstomus pacificus) off northern Oregon

    Creator:
    Toole, C. L. (Christopher L.)
    Abstract:
    Demographic characteristics of juvenile Dover sole (Microstomus pacificus) were examined in relation to physical and biotic factors to develop a hypothesis explaining annual variations in recruitment. Surveys were conducted along the Oregon continental shelf at depths between 50-400 m bimonthly during 1989 and annually (in March) between 1990 and 1993....
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    Dissertation
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    dover sole (Microstomus pacificus) off northern Oregon AN ABSTRACT OF THE THESIS OF Christopher L

  • Cumulative effects of land use on salmon habitat in southwest Oregon coastal streams

    Creator:
    Frissell, Christopher Andrew, 1960-
    Abstract:
    As part of a hierarchical approach to classifying watersheds and stream habitats based on geomorphic and geologic criteria, we defined ten classes of fluvial and lacustrine habitats at the scale of valley segments. Valley segments are landscape units which encompass surface waters and the adjacent floodplains and hillslopes with which...
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    Dissertation
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    southwest Oregon coastal streams AN ABSTRACT OF THE THESIS OF Christopher A. Frissell for the degree of

  • Heterogeneous thermal habitat for northeast Oregon stream fishes

    Creator:
    Ebersole, Joseph L.
    Abstract:
    Discrete coldwater patches within warm streams provide potential thermal refuge for coldwater fishes during periods of heat stress. This analysis focused on heterogeneity in stream water temperatures as influenced by local influx of cooler subsurface waters. Using field thermal probes and recording thermistors, we identified and characterized coldwater patches potentially...
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    Dissertation
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    Thermal Habitat for Northeast Oregon Stream Fishes. Abstract approved: William J. Liss Discrete

  • Fish movement and assemblage dynamics in a Pacific Northwest riverscape

    Creator:
    Baxter, Colden V.
    Abstract:
    This study examined fish movements and assemblage dynamics in the Wenaha, Grande Ronde, Snake river system of northeast Oregon and southeast Washington. I investigated the role of fish movement in the dynamics of stream fish assemblages and evaluated relationships between species movement, assemblage structure, and the heterogeneity of habitat at...
    Resource Type:
    Dissertation

  • The Oregon Coastal Subprovince, a new biogeographic subprovince for primary freshwater fishes in Oregon

    Creator:
    Kettratad, Jes
    Abstract:
    The Pacific Northwest has a relatively low diversity of primary freshwater fishes with most of the endemism and diversity in the Columbia River and Klamath River. However, the Oregon Coastal Subprovince defined as the coastal rivers from Miami River in the north to Sixes River in the south, has a...
    Resource Type:
    Dissertation
    Full Text:
    Title: The Oregon Coastal Subprovince, a New Biogeographic Subprovince for Primary Freshwater Fishes in

  • Seasonal floodplain wetlands as fish habitat in Oregon and Washington

    Creator:
    Baker, Cynthia F.
    Abstract:
    To begin to understand freshwater seasonal floodplain fish communities in the context of human alteration of the physical system, species introductions and wetland restoration efforts, I studied fish assemblages in fifteen seasonal floodplain wetlands within four geographic regions (coastal, upper Columbia River estuary, Puget Sound and eastern Oregon/Washington) in the...
    Resource Type:
    Dissertation
    Full Text:
    Science presented on March 17, 2008. Title: Seasonal Floodplain Wetlands as Fish Habitat in Oregon