NDLTD logo NDLTD Union Catalog and Global ETD Search

Global ETD Search

Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.

Results

Showing 1 to 20 of 37 for “"populus tremuloides"”.

  1. Colorado cytospora canker complex on Populus tremuloides Michx.

    Kepley, Jeff B., author, Reeves, F. Brent, advisorColorado State University. Libraries2009

    Cytospora canker is a serious fungal disease affecting aspen in natural and commercial forests as well as urban sites. In Colorado the causal organism responsible for this canker disease is typically reported to be Cytospora chrysosperma (Pers.) Fr. However, a thorough understanding of the species …

    colostate Repository record

  2. ANALYSIS OF POPULUS TREMULOIDES CLONAL VARIATION AND DELINEATION IN THE OTTAWA NATIONAL FOREST

    Flesher, Kristina N.

    mtu Repository record

  3. K+-Homöostase und kaliumabhängige Xylogenese in Populus tremula L. x Populus tremuloides Michx

    Langer, KatharinaUniversität Würzburg

    … Aus Holz-Kambium-Bast-Gewebe wurden mit PTK2 (Populus tremula K+ channel 2), KPT1 (K+ channel Populus tremula 1) und PtKUP1 (Populus tremula K+ uptake transporter 1) drei Volllängen putativer Kaliumtransporter isoliert. PTK2 ließ sich anhand der abgeleiteten Aminosäuresequenz der …

    wurz-thes Repository record

  4. The cost of longevity: loss of sexual function in natural clones of Populus tremuloides

    Ally, DilaraUniversity of British Columbia2008

    … or lateral roots. The focus of this study was Populus tremuloides, trembling aspen, a dioecious tree that reproduces sexually by seed and asexually through lateral roots. Local forest patches in western populations of Populus tremuloides consisted largely of multiple genotypes. Multi-clonal …

    ubc Repository record

  5. A study of the components of the lead subacetate precipitate of the leaves of populus tremuloides

    Kinsley, Homan, Jr.Georgia Institute of Technology1967

    gatech Repository record

  6. Osooni lisamine "FACE" tüüpi katsetesse. Osooni mõju ameerika haava (Populus tremuloides) kloonide kasvule ja väljalangevusele

    Sõber, Jaak2007

    tartu

  7. The Effect of Cattle, Sheep, and Other Factors on Aspen (<em>Populus tremuloides</em>) Reproduction After Clear-Cut Logging in Southern Utah

    Lucas, Paul A.

    utahstate Repository record

  8. Species, stand, and regional response to forest damage in southwestern Quebec following the 1998 ice storm

    Proulx, Olga J1999

    … species, Acer saccharum Marsh., Acer rubrum L., Populus tremuloides Michx., and Betula populifolia Marsh. to ice storm damage was studied in the Northern Hardwood Forest of southwestern Quebec, Canada. The focus of the study was the analysis of tree damage resulting from ice accumulation ranging …

    concordia Repository record

  9. The effect of hot-pressing parameters on resin penetration and flakeboard layer properties

    Brady, Derwood E.Virginia Polytechnic Institute and State University1987

    … of phenol-formaldehyde resin into aspen (<i>Populus tremuloides</i>) and Douglas-fir (<i>Pseudotsuga menziesii</i>) flakes, and the layer properties of yellow poplar (<i>Liriodendron tulipifera</i>) flakeboard were investigated to determine how they were influenced by various pressing …

    vt Repository record

  10. The Effects of Forest Management on Birds in the Black Hills of South Dakota

    Mills, Todd R.

    … four structural stages of quaking aspen (Populus tremuloides ), and meadow habitats of the Black Hills, South Dakota during 1992 and 1993. I observed 69 species during this study. Dark - eyed Juncos (Junco hyemalis) were common in all habitats except meadows. The Yellow-rumped Warblers …

    sdstate Repository record

  11. Sexual recruitment of trees following fire in the southern mixedwood boreal forest of Canada

    Charron, Isabelle1998

    … (L.) Mill., Picea glauca (Moench) Voss and Populus tremuloides Michx., was studied in the mixedwood boreal forest of Saskatchewan, Canada. The main objective of the study was to estimate the recruitment densities of germinants as a function of seedbed type. Field observations indicate that …

    concordia Repository record

  12. Response of mat conditions and flakeboard properties to steam- injection variables

    Johnson, Stephen E.Virginia Tech1990

    … in the laboratory scale manufacture of aspen (Populus grandidentata and Populus tremuloides) flakeboard. Two resins, phenol formaldehyde and polymeric MDI, were used. Steam-injection press schedules varied from low steam input to high steam input by adjusting steam pressure, steam time, and the …

    vt Repository record

  13. Elk hunting on Turnbull National Wildlife Refuge: impacts on elk movement and aspen regeneration

    Dwight, Christopher E.

    <p>"In the arid West, quaking aspen (Populus tremuloides) cover less than 10% of the forest landscape, yet support a disproportionate diversity of native plants and animals. When elk (Cervus elaphus) become overabundant, browsing prevents aspen regeneration, reduces survival, and consequently …

    eastern-wash Repository record

  14. Differential Canopy Leaf Flushing and Site Nitrogen Status Facilitate Invasive Species Establishment in Temperate Deciduous Forest Understories

    Dreiss, Lindsay M2011

    … understories. Six canopy types were used: <em>Populus tremuloides</em> (quaking aspen), <em>Acer saccharum </em>(sugar maple), <em>Quercus </em>spp./<em>Carya </em>spp. (oak/hickory), <em>Fraxinus americana </em>(white ash), <em>Robinia pseudoacacia</em> (black locust), and <em>Pinus …

    uconn-diss Repository record

  15. Ecological and taxonomic studies of ectomycorrhizal fungi associated with Aspen

    Cripps, Cathy LynnVirginia Tech1995

    … were an important component of the mycoflora of Populus tremuloides in Montana. Species of the mycorrhizal genus Inocybe, which is not well known in North America, were particularly prevalent in the aspen stands near Butte. Thirteen of the 16 species of Inocybe that occurred with aspen in these …

    vt Repository record

  16. A Food Habits Study of Whitetail Deer In The Black Hills

    Schneeweis, James Carl

    … summer 1967. Summer study was confined to aspen (Populus tremuloides) areas and involved stomach analysis and a pasture study. Fall and winter food habits were determined by stomach analysis only. Associated aspen vegetation was sampled to find a representative site for construction of a 0.7 acre …

    sdstate Repository record

  17. A comparison of Aspen and Pine Communities in the Northern Black Hills

    Kranz, Jeremiah J.

    Three study areas, each containing an aspen (Populus tremuloides) community, a pine (Pinus ponderosa) community, and a mixed aspen-pine community, were studied during the summers of 1968, 1969, and 1970. Soil chemistry, plant chemistry, overstory density, understory production, and use by whitetail …

    sdstate Repository record

  18. Geochemical Investigations of Mineral Weathering: Quantifying Weathering Intensity, Silicate versus Carbonate Contributions, and Soil-Plant Interactions

    Reynolds, Amanda ChristineThe University of Arizona.2009

    … Juniperus scopulorum), a deciduous tree (Populus tremuloides), three shrubs (Chrysothamus nauseosus, Fallugia paradoxa, Rhus trilobata), and an annual grass (Bouteloua gracilis) and a lichen (Xanthoparmelia lineola). We found that plant 87Sr/86Sr ratios covaried with variations in plant …

    arizona-thes Repository record

  19. Changes in landscape patterns and associated forest succession on the western slope of the Rocky Mountains, Colorado

    Manier, Daniel J., author, Lavin, Richard D., advisor, Dean, Denis J., committee member, Laituri, Melinda J., committee member, Smith, Frederick W., committee memberColorado State University. Libraries2000

    … resulted in a decline in the presence of aspen (Populus tremuloides Michaux) on the landscape. Repeat photography and size-age distribution analyses are used to assess changes in major vegetation types (coniferous forest, aspen forest, rangelands) on the western slope of the Rocky Mountains, …

    colostate Repository record

  20. Habitat Selection By Female White-Tailed Deer in the Northern Black Hills, South Dakota and Wyoming

    Kennedy, John F.

    … (Picea glauca), aspen/beaked hazel/spiraea (Populus tremuloides/Corylus cornuta/Spiraea betulifolia), and pine/aspen habitats were avoided in winter. During spring, deer selected agricultural lands and aspen/beaked hazel/spiraea habitat, while all pine habitats were avoided or used in …

    sdstate Repository record

Page 1 of 2