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Filtering by: Creator Cunningham, Jennifer L. Remove constraint Creator: Cunningham, Jennifer L. Committee Member Kling, Jennifer Remove constraint Committee Member: Kling, Jennifer

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  • Biological soil crusts in forested ecosystems of southern Oregon : presence, abundance and distribution across climate gradients

    Creator:
    Olarra, Jennifer A.
    Abstract:
    In arid and semi-arid deserts, soils are commonly covered with biological soil crusts. The study of arid biocrusts and their ecological function has become increasingly common in the literature over the last several decades. Interestingly, no mention is made of biological soil crusts in forested ecosystems, raising the question as...
    Resource Type:
    Masters Thesis
    Full Text:
    Jennifer A. Olarra for the degree of Master of Science in Soil Science presented on December 14, 2012

  • Milk Production, Pasture Performance, and Environmental Sustainability of Specialized Pastures

    Creator:
    Wilson, Randi L.
    Abstract:
    This study investigated the effects of diversification strategy through the inclusion of forb and legume based pastures in the feedbase of dairy cows on annual forage production, botanical composition, spring milk yield, N partitioning and methane emissions from dairy cows in Western Oregon. Using a randomized complete block design, 3...
    Resource Type:
    Masters Thesis
    Full Text:
    L/d of milk, highest of the three treatments (P < 0.01). Milk fat content tended to be higher in

  • Influence of supplement composition on utilization of low-quality, cool-season forages by beef cattle

    Creator:
    McGuire, Dustin L.
    Abstract:
    Two studies were conducted to evaluate the influence of supplement composition on intake and digestibility of a low-quality (< 6% CP), cool-season forage, as well as cow performance. Treatments included a non-supplemented control (CON), corn (approximately 8% CP), corn and urea (LU = corn + 0.09 mg/kg BW urea, approximately...
    Resource Type:
    Masters Thesis
    Full Text:
    OF Dustin L. McGuire for the degree of Master of Science in Animal Sciences presented on August

  • Creep-feeding to stimulate metabolic imprinting in nursing beef heifers : impacts on heifer growth, reproductive, and physiological parameters

    Creator:
    De Meireles Reis, Maria
    Abstract:
    The following experiment presented herein compared growth, physiological, and reproductive responses of beef heifers with (MI) or without (CON) access to a creep-feeder, as a manner to stimulate metabolic imprinting while nursing their dams. On d 0 of the experiment, 60 Angus × Hereford heifers were ranked by initial BW...
    Resource Type:
    Masters Thesis
    Full Text:
    plasma leptin may decrease the ability of other signals to trigger puberty (Cunningham et al., 1999

  • Climate-based Seed Deployment Zones for the Pacific Northwest

    Creator:
    McClure, Meridith L.
    Abstract:
    Native populations of forest trees are specifically adapted to the climates they inhabit. The farther trees are moved from their local climates (i.e., as the climatic transfer distance increases), the more growth and survival tend to decrease. The transfer limit is the climatic transfer distance beyond which plantation performance is...
    Resource Type:
    Masters Thesis
    Full Text:
    , Jeff DeBell, Meg Krawchuk, Jennifer Kling, and David Lewis for your valuable feedback and interest in

  • Breeding tomato for increased fruit phenolics

    Creator:
    Boches, Peter S.
    Abstract:
    The purpose of this research was to develop tools and germplasm for the production of tomatoes (Solanum lycopersicum L.) with high fruit phenolics without the use of genetic engineering. A candidate gene analysis was undertaken to identify genes regulating anthocyanin biosynthesis in tomato fruit (Aft, Abg, atv, and Purple Smudge)....
    Resource Type:
    Dissertation
    Full Text:
    production of tomatoes (Solanum lycopersicum L.) with high fruit phenolics without the use of genetic

  • Evolutionary relationships and an investigation of sympatric speciation within Limnanthaceae

    Creator:
    Meyers, Stephen C.
    Abstract:
    Limnanthes floccosa ssp. floccosa and L. floccosa ssp. grandiflora are two of five subspecies of Limnanthes floccosa endemic to vernal pools in southern Oregon and northern California. Three seasons of monitoring natural populations have quantified that L. floccosa ssp. grandiflora is always found growing sympatrically with L. floccosa ssp. floccosa...
    Resource Type:
    Dissertation
    Full Text:
    Robert Meinke Limnanthes floccosa ssp. floccosa and L. floccosa ssp. grandiflora are

  • Breeding and genetics of lilacs and hardy hibiscus

    Creator:
    Lattier, Jason D.
    Abstract:
    Lilacs are a group of ornamental trees and shrubs in the Oleaceae family consisting of 22 to 30 species. There are six series within genus Syringa: Pubescentes, Villosae, Ligustrae, Ligustrina, Pinnatifoliae, and Syringa. Fertility and cross-compatibility among cultivars, species, and series have yet to be formally investigated. Over three years,...
    Resource Type:
    Dissertation
    Full Text:
    hue (CIE L*) was also investigated (spotless and geisha seedlings removed). The deepest pigments

  • Forage production, dual use potential, and trait variation in chicory grown in the Pacific Northwest

    Creator:
    Seeno, Elizabeth
    Abstract:
    Grasslands in the Pacific Northwest are characterized by seasonally wet, acidic soils that mainly support cool season grasses and a limited number of legume species. A major limitation to efficient animal production in grass-dominant pastures is the decline in the herbage growth rate and nutritional quality of forage from late...
    Resource Type:
    Dissertation
    Full Text:
    chicory (Cichorium intybus L.) and birdsfoot trefoil (Lotus corniculatus L.) are alternative forage

  • Inheritance and Allelism Among the B genes in Cucurbita moschata

    Creator:
    Wilson, Casey K.
    Abstract:
    One of the most economically important genes in squash (Cucurbita spp.) is the B gene which conditions precocious depletion of chlorophyll in preanthesis fruit. The B genes are found naturally occurring in at least three of the five domesticated species of Cucurbita, including C. pepo, C. maxima and, most recently...
    Resource Type:
    Masters Thesis
    Full Text:
    also to Dr. Jennifer Kling for providing timely guidance in the ways of Mendelian genetics and