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Filtering by: Alternative title ssim Agriculture monograph no. 13 Remove constraint Alternative title ssim: Agriculture monograph no. 13 Decade 1970-1979 Remove constraint Decade: 1970-1979 Non-Academic Affiliation Oregon State University. Graduate School Remove constraint Non-Academic Affiliation: Oregon State University. Graduate School

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  • Man and the land : an ecological history of fire and grazing on eastern Oregon rangelands

    Creator:
    Shinn, Dean Allison
    Abstract:
    Ecological and historical information are combined in examining the environmental influence of fire and grazing on rangelands in eastern Oregon through time. Competitive relationships between herbaceous and woody flora in the northern Great Basin are discussed, focusing broadly on the shrubsteppe regions 'of Franklin and Dyrness (1973) but with special...
    Resource Type:
    Masters Thesis
    Full Text:
    .. . . . ... . ... . . . . . . . . . . 73 13 Increase in numbers of Juniperus occidentalis . 74 Page MAN AND THE LAND: AN

  • Effects of synthetic 9-oxodectrans-2-enoic acid on the foraging activities of honey bees (Apis mellifera L.)

    Creator:
    Youngs, Lorna C.
    Abstract:
    An experimental formulation of 9 -oxodec-trans-2-enoic acid, the major component of honey bee (Apis mellifera L.) queen pheromone, was tested for its effect on worker foraging behavior in the pollination of sweet cherries (Prunus avium L. ). The test formulation consisted of a solid beeswax cylinder impregnated with a measured...
    Resource Type:
    Masters Thesis
    Full Text:
    total number of foraging bees than either the queenless or pheromone treated hives. There was no

  • A preliminary investigation of the spotted owl in Oregon

    Creator:
    Forsman, Eric D.
    Abstract:
    Between 1970 and 1974, data were collected on the distribution and biology of the spotted owl (Strix occidentalis) in Oregon. One-hundred and sixteen pairs and seven single birds were located. Spotted owls occurred throughout the mountains of western Oregon and on the east slope of the Cascade Range at least...
    Resource Type:
    Masters Thesis
    Full Text:
    flying squirrel (Glaucomys sabrinus) was the principal prey species (13-48 percent of total biomass

  • The Tlingit button blanket

    Creator:
    Otness, Sharol Lind
    Abstract:
    The Tlingit Button Blanket was developed on the Northwest Coast of North America in the early 19th century as a result of the introduction of foreign materials brought by European explorers and traders in the late 18th century. The-Tlingit Indians substituted trade items for indigenous materials and integrated the resulting...
    Resource Type:
    Masters Thesis
    Full Text:
    without agriculture and with no domestic animals other than the dog (Drucker, 1955, p. 1). The Tlingit

  • The Yakima Indians : study and analysis of the Yakima water rights

    Creator:
    Selam, Leroy Bennie
    Abstract:
    This thesis is an ethnohistoric study of the water rights of the Yakima Confederated Tribes. The study considers the water rights issues of the Yakimas from the cultural viewpoint at the time of European contact to the present legal and political situation. It traces the many obstacles the Yakimas have...
    Resource Type:
    Masters Thesis
    Full Text:
    Dean of Graduate School Date thesis is presented 2(), ` r f Typed by Karen Benson f 13, 7e zl,, 12

  • Plant communities and succession in Oregon coastal salt marshes

    Creator:
    Jefferson, Carol A.
    Abstract:
    The purpose of this study was to determine plant species composition, community structure, successional relationships, vegetational development and plant distributions in estuarine salt marshes on the Pacific Coast of Oregon. Quadrat and transect samples of plant presence and cover, collected from April 1971 - June 1974, were subjected to phytosociological...
    Resource Type:
    Dissertation
    Full Text:
    vegetation types along a transect on salt marsh, Nestucca Bay, 84 13 Species succession, Oregon coastal salt

  • A study of the frequency of utilization of the Oregon State University health services in relation to selected characteristics of students

    Creator:
    Stanaway, Timothy John
    Abstract:
    The purpose of this study was to identify some of the factors associated with student usage of the Student Health Services (SHS) and of the Infirmary at Oregon State University. The population for the study was the freshman class entering Oregon State University in September, 1968. The original enrollment of...
    Resource Type:
    Dissertation
    Full Text:
    Service visits by change of major and no change of major 43 13 Number and percent of female graduates who

  • The intrusion of logging debris into artificial gravel streambeds

    Creator:
    Garvin, William Fredrick
    Abstract:
    The objective of this study was to quantitatively describe the intrusion of logging debris into artificial gravel streambeds during conditions of low stream flow with a stable streambed, and begin an analysis of the effect of high flow and unstable streambeds. This study was initiated because prior studies indicated that...
    Resource Type:
    Masters Thesis
    Full Text:
    findings by Ponce (1973). No other research has addressed this problem. This study is the first to try to

  • Streamside buffer strips : survival, effectiveness, and design

    Creator:
    Steinblums, Ivars John
    Abstract:
    Stream buffer strips are an important tool for protecting the stream environment. This research documents the losses from 40 stream buffer strips, in the Western Cascades of Oregon, established 1 to 15 years before the study. Predictive equations are developed which identify the major reasons for buffer strip losses. Losses...
    Resource Type:
    Masters Thesis
    Full Text:
    buffer strips suffered a 52 percent loss. The combined array of buffer strips lost 13 percent

  • Isoenzyme polymorphism in provenances of Douglas-fir (Pseudotsuga menziesii [Mirb.] Franco var. menziesii)

    Creator:
    Yang, Jenq-chuan
    Abstract:
    Genetic variability in natural populations of Douglas-fir was studied at molecular level by investigating the variations of some primary gene products, i. e. enzymes. Using the techniques of disc gel electrophoresis and biochemical staining, the isoenzyme patterns of leucine aminopeptidase, esterase and glutamate oxaloacetate transaminase are characterized in young seedlings...
    Resource Type:
    Dissertation
    Full Text:
    Trees 10 Analysis of Isoenzyme Inheritance Patterns 13 Population Genetics and Geographic Variation 15