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Filtering by: Creator Grabe, Don F. Remove constraint Creator: Grabe, Don F. Academic Affiliation Fisheries and Wildlife Remove constraint Academic Affiliation: Fisheries and Wildlife Peer Reviewed No Remove constraint Peer Reviewed: No

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  • Crop-milk cycles in band-tailed pigeons and losses of squabs due to hunting pigeons in September

    Creator:
    Zeigler, Don L.
    Abstract:
    The production of crop-milk in band-tailed pigeons was investigated to estimate losses of squabs that occur from hunting pigeons during September.¹ Living birds held captive were examined with a cystos cope and pigeons killed by hunters were examined in the field to determine changes in gross appearance of crops and...
    Resource Type:
    Masters Thesis
    Full Text:
    squabs due to hunting pigeons in September AN ABSTRACT OF THE THESIS OF Don Leslie Zeigler for the

  • The effects of water withdrawals on the emergence timing, adult body mass, and total emerging biomass of aquatic insects from two northeast Oregon rivers

    Creator:
    Brown, Phil D.
    Abstract:
    Small low-head diversion dams are capable of removing much of the flow of a river, often resulting in increased water temperatures and habitat loss. Warmer temperatures have been shown to accelerate aquatic invertebrate growth and development, and discharge reductions can reduce instream habitat, suggesting that water withdrawals may alter both...
    Resource Type:
    Masters Thesis
    Full Text:
    also appreciated. I owe a debt of gratitude to Dr. Don Horneck for taking a very active role in my

  • The Influence of Wildfire and Invasive Vegetation on Mule Deer

    Creator:
    Schuyler, Elizabeth
    Abstract:
    The western United States has experienced large-scale degradation due to land use and land cover changes, invasion of annual grasses, and expansion of woody plants into grass and shrublands and the resultant altered fire regimes. These landscape-scale changes have coincided with declining mule deer (Odocoileus hemionus) populations, making habitat loss...
    Resource Type:
    Dissertation
    Full Text:
    guidance on this demanding, yet fulfilling endeavor. Many thanks to Don Whittaker for his continued

  • Juvenile coho salmon movement, growth and survival in a coastal basin of southern Oregon

    Creator:
    Weybright, Adam D.
    Abstract:
    Juvenile salmonids display highly variable spatial and temporal movement patterns that are influenced by density dependent (e.g., competition, predation) and density independent (e.g., genetics, stream discharge, physical habitat conditions) factors. The effects of these factors differ with fish life history stage, but will ultimately affect how salmonids utilize freshwater nursery...
    Resource Type:
    Masters Thesis
    Full Text:
    . Members of my committee, Joe Ebersole, Gordon Reeves, and Don Larson, were instrumental in forming the

  • A simulation model of wood dynamics in Pacific Northwest streams

    Creator:
    Meleason, Mark Alan
    Abstract:
    Conceptually, the dynamics of wood in streams can be viewed in terms of input and in-channel processes. Input processes are associated with both the riparian (tree fall, bank cutting, windthrow) and upslope forests (mass failures). In-channel processes include log breakage, movement, and decomposition. A mechanistic view of these processes is...
    Resource Type:
    Dissertation
    Full Text:
    (Raf.) Sarg.), western red cedar (Thuja plicata D. Don ex Lambert), and red alder (Alnus rubra Bong

  • Salmon and marine-derived nutrient effects on primary and secondary trophic levels

    Creator:
    Claeson, Shannon M.
    Abstract:
    The purpose of this study was to understand the influence of organic material and nutrients from spawning salmon and supplemented salmon carcasses on stream food webs. My study objectives were to examine 1) assimilation of salmon-derived nutrients (SDN) by producers and consumers in the food web, 2) epilithic biofilm productivity,...
    Resource Type:
    Masters Thesis
    Full Text:
    , and shredders did not assimilate SDN. Of the nutrients measured (NH4-N, NO3-N, NO2-N, DON, SRP, DOC

  • Limnology of Upper Klamath Lake, Oregon, with emphasis on benthos

    Creator:
    Hazel, Charles R.
    Abstract:
    Aspects of the limnology and benthic ecology of Upper Klamath Lake, Oregon, are described emphasizing those features that identify its uniqueness. The lake is large, shallow, and characterized by nuisance abundances of Aphanizomenon flos-aquae and midge flies. Results of this study indicate that it does not stratify and dissolved oxygen...
    Resource Type:
    Dissertation
    Full Text:
    except in localized embay- ments. Although temperatures exceed 70°F and pH is between 9 and 10 during

  • News & Views, 1998 Summer

    Creator:
    Loegering, John P.
    Resource Type:
    Other
    Full Text:
    . Brown, Mr. and Mrs. Michael V. Cai, Dr. Zhengwei Carline, Mr. Robert F. Casteel, Mr. and Mrs. John L

  • News & Views, 2011

    Creator:
    Hall, Jim
    Resource Type:
    Other
    Full Text:
    Don Ratliff ’70 is the custodian of most of the records. The chapter officers are planning a retreat

  • News & Views, 1993/06

    Creator:
    Edge, Dan
    Resource Type:
    Other
    Full Text:
    coming." A nice note from Don Neff ('51, PhD '63) who "...was very pleased to hear that my father's old