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Filtering by: Creator Gifford Pinchot National Forest (Agency : U.S.) Remove constraint Creator: Gifford Pinchot National Forest (Agency : U.S.) Academic Affiliation Rangeland Resources Remove constraint Academic Affiliation: Rangeland Resources Rights Statement Copyright Not Evaluated Remove constraint Rights Statement: Copyright Not Evaluated

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  • The response of soils, streambanks and instream coliform bacteria levels to grazing management in a riparian area

    Creator:
    Bohn, Carolyn C.
    Abstract:
    This thesis describes a case study of the effects of five systems of grazing on watershed values in a deteriorated riparian area. Soil infiltration, bulk density and penetrability, streambank edge movement and coliform bacteria were monitored for seven years along a stream in the Blue Mountains of northeastern Oregon. For...
    Resource Type:
    Masters Thesis
    Full Text:
    stream bottoms of the Black Hills National Forest. lU When pastures were stocked heavily from June

  • Understory response to tree harvesting in pinyon-juniper woodlands

    Creator:
    Everett, Richard L.
    Abstract:
    Understory species associations and their association with tree species were examined on three intensively studied stands. We studied the chronosequence of understory species associated with different aged singleleaf pinyon (Pinus monophylla Torr. and Frem.) trees. Mid- to late pinyon-juniper understory succession was found to be more spatial than floristic in...
    Resource Type:
    Dissertation
    Full Text:
    management agency. Cordwood sales generate monies for both the BLM and U.S. Forest Service in the Great

  • Analysis of hydrology and erosion in small, paired watersheds in a juniper-sagebrush area of central Oregon

    Creator:
    Fisher, Michael, (Michael Patrick), 1966-
    Abstract:
    Current research indicates that the expansion of western juniper can inhibit soil water retention, storage and prolonged releases from watersheds. This phenomenon is of great importance in eastern Oregon, as western juniper is encroaching into sagebrush/grass communities with a correlated reduction in herbaceous ground cover, resulting in reduced infiltration rates...
    Resource Type:
    Dissertation
    Full Text:
    technical and physical support, such as the BLM and the Forest Service, in particular John Swanson, Larry

  • Paired watershed ecological analysis

    Creator:
    Fisher, Michael, (Michael Patrick), 1966-
    Abstract:
    This study was designed to provide a physical and ecological analysis of paired watersheds in the semi-arid western juniper (Juniperus occidentalis) woodlands of Central Oregon. Instrumentation and monitoring was accomplished in Jensen and Mays watersheds as the preliminary portion of a longer term project. Instrumentation was designed to address changes...
    Resource Type:
    Masters Thesis
    Full Text:
    necessary to setup this study. In addition, personnel from both BLM and the U.S. Forest Service provided

  • Cattle behavior and distribution on the San Joaquin Experimental Range in the foothills of central California

    Creator:
    Harris, Norman Rex
    Abstract:
    Small herds of cows were observed and spatially mapped over continuous twenty-four hour periods. Treatments were implemented that investigated the effect of water site and supplementation on animal distribution patterns. A series of six observation periods constituted each observation series. Observation series were repeated winter (January) and summer (July) for...
    Resource Type:
    Dissertation
    Full Text:
    use the surrounding upland areas. Several frderal agencies, including the U.S. Forest Service, the