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Filtering by: Subject Invasive plants -- Ecology -- Oregon Remove constraint Subject: Invasive plants -- Ecology -- Oregon Committee Member Pyke, David Remove constraint Committee Member: Pyke, David Degree Name Doctor of Philosophy (Ph.D.) Remove constraint Degree Name: Doctor of Philosophy (Ph.D.)

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  • Economic and social impacts of restoration : a case study of the Great Basin Region

    Creator:
    Satyal, Vijayanand H.
    Abstract:
    The last five decades of research in arid land ecology cites Invasive species as a source of imbalances in biodiversity through habitat destruction and reductions of native species through ecosystem alterations in favor of non-native species. Invasive species are known to damage not only the surrounding ecosystem but also cause...
    Resource Type:
    Dissertation
    Full Text:
    : _____________________________________________________________ John A Tanaka The last five decades of research in arid land ecology cites Invasive species as

  • Quantification of vegetation diversity and variation on intact and degraded rangelands

    Creator:
    Dysart, Patricia L.
    Abstract:
    Vegetation diversity in the Wyoming big sagebrush/Thurber needlegrass (Artemisia tridentata Nutt. ssp. wyomingensis Beetle & Young/Achnatherum thurberianum (Piper) Barkworth. syn. Stipa thurberiana Piper) plant association was studied across a condition class gradient in southeastern Oregon. All observable vascular plant species were counted during 6 seasons and 2 years and diversity...
    Resource Type:
    Dissertation
    Full Text:
    . wyomingensis Beetle & Young/Achnatherum thurberianum (Piper) Barkworth. syn. Stipa thurberiana Piper) plant

  • The Biology and ecology of weeping alkaligrass (Puccinellia distans) and Nuttall’s alkaligrass (Puccinellia nuttalliana)

    Creator:
    Tarasoff, Catherine
    Abstract:
    Weeping alkaligrass (Puccinellia distans) and Nuttall’s alkaligrass (Puccinellia nuttalliana) infest Kentucky bluegrass seed fields of eastern Oregon. Weeping alkaligrass is an introduced species from Eurasia, whereas Nuttall’s alkaligrass is native to semi arid environments of western North America. These species are often referred to collectively as ‘alkaligrass’; however, for farmers...
    Resource Type:
    Dissertation
    Full Text:
    Oregon State University Extension Service in 20001. Preliminary field visits and plant identification