Index Catalog // ScholarsArchive@OSU

Mediation of conifer root growth by mycorrhizal fungi and plant growth regulators

Creator:: Scagel, Carolyn F.
Abstract:: Many mycorrhizosphere microorganisms can produce plant growth regulating compounds in vitro. Plant growth regulating compounds are known to mediate root growth and development. In reforestation practices, conifer tree seedling growth and survival are linked to rapid root growth and development after outplanting. Multifactorial experiments were conducted to document variations in...
Resource Type:: Dissertation
Full Text:: plant growth regulators AN ABSTRACT OF THE THESIS OF Carolyn F. Scagel for the degree of Doctor of

Litter decay processes and soil nitrogen availability in native and cheatgrass-dominated arid rangelands

Creator:: Harrison, Kristen S.
Abstract:: As large-scale restorations of degraded rangelands are initiated, land managers need to understand how decades of dominance by the invasive annual grass, cheatgrass (Bromus tectorum L.), have altered ecosystem processes. One way to assess such alterations is by observing differences in decay rates, since decomposition is determined by factors such...
Resource Type:: Masters Thesis
Full Text:: Bekedam, Dana Witwicki, Bonnie Keeler, Emily Orling, Carolyn Menke, Michelle Parde, and Melanie Barnes. I

Microbial analysis of coniferous forest and nursery soils : effects of ectomycorrhizae, volatiles, and humic-rich organic substrates

Creator:: Schisler, David Albert
Abstract:: Fusarium spp. frequent conifer nursery soils yet are rarely recovered from coniferous forest soils. Experiments were performed to determine what influence humic-rich organic amendments and volatiles from soil, ectomycorrhizal fungi and ectomycorrhizae have on the populations of several physiologic and taxonomic microbial groups potentially related to this phenomenon. A comparative...
Resource Type:: Dissertation
Full Text:: herbaceous litter. In Biology of Plant Litter Decomposition (C. H. Dickinson and G. J. F. Pugh, Eds.), pp

Variation in plant response to inoculation with different isolates of vesicular arbuscular mycorrhizal fungi

Creator:: Ianson, David C.
Resource Type:: Dissertation
Full Text:: S., Carolyn S., Joe N., and all the rest who never hesitated to give me aid or advice. During the

Ecological thresholds, climate extremes, and tree species' distributions across the Pacific coastal United States

Creator:: Lintz, Heather E.
Abstract:: Species' distributions across the landscape are perhaps the least understood yet most conspicuous features of life on earth. Ecologists have long studied species' distributions; yet, many questions remain about why species occur where they do. Such questions persist largely because species' distributions are complex systems with challenging properties like non-linearity,...
Resource Type:: Dissertation
Full Text:: ), species’ migration and invasion (e.g. Woodall et al. 2009b, Crossman and Cooke 2011, Peterson 2003

Epiphytic macrolichens in relation to forest management and topography in a western Oregon watershed

Creator:: Berryman, Shanti D.
Abstract:: This dissertation describes patterns in epiphytic macrolichen community composition, diversity, and biomass across various stand types in the Blue River watershed of western Oregon. It first examines the relative importance of ecological factors such as stand age, remnant tree retention, and topography to lichen communities in the landscape. It then...
Resource Type:: Dissertation
Full Text:: Briana Lindh, Erin Martin, Carolyn Menke, Sarah Jovan, and Andrea Ruchty for the time they took to

Factors limiting the distribution of the sensitive lichen Usnea longissima in the Oregon Coast Range : habitat or dispersal?

Creator:: Keon, Dylan B.
Abstract:: The sensitive lichen Usnea longissima Ach., formerly a fairly common circumboreal species, has been extirpated from much of its range (e.g., Eastern Europe). Although the U.S. Pacific Northwest (PNW) remains a relative stronghold for the species, U longissima faces increasing pressure in the region from habitat loss, air pollution, and...
Resource Type:: Masters Thesis
Full Text:: B. Peterson and I shared good conversation and beer, and also share interests in ecological

Effects of current velocity, irradiance, and herbivory on algal assemblages in laboratory streams

Creator:: Steinman, Alan D.
Abstract:: Effects of current velocity, irradiance, and grazing on the biomass, taxonomic structure, physiognomy, and chemical composition of lotic algal assemblages were investigated. Four experiments, lasting 32 to 75 days, were conducted in laboratory streams to determine how these factors affect algal assemblages singly, and in concert with each other. Regardless...
Resource Type:: Dissertation

Organic pesticide modification of the species interactions in an annual plant community

Creator:: Pfleeger, Thomas G.
Resource Type:: Masters Thesis
Full Text:: them with soil. Carolyn, Amanda, and Adam Pfleeger assisted in plant sorting during the 1988 season

Cytokinin oxidase activity from Phaseolus vulgaris L. cv. Great Northern callus tissues

Creator:: Chatfield, J. Mark
Abstract:: Cytokinin oxidase activity in callus tissues of Phaseolus vulgaris L. cv. Great Northern has been examined using an assay based on the oxidation of radioactively labeled N⁶ -(Δ² -isopentenyl) adenine (i⁶Ade) to adenine (Ade). Conditions for the quantitative extraction and assay of the enzyme have been established. The substrate specificity...
Resource Type:: Dissertation
Full Text:: recognition is due Ms. Carolyn Paynter and Ms. Kathern Marsden for their support and invaluable assistance

ScholarsArchive@OSU

Mediation of conifer root growth by mycorrhizal fungi and plant growth regulators

Litter decay processes and soil nitrogen availability in native and cheatgrass-dominated arid rangelands

Microbial analysis of coniferous forest and nursery soils : effects of ectomycorrhizae, volatiles, and humic-rich organic substrates

Variation in plant response to inoculation with different isolates of vesicular arbuscular mycorrhizal fungi

Ecological thresholds, climate extremes, and tree species' distributions across the Pacific coastal United States

Epiphytic macrolichens in relation to forest management and topography in a western Oregon watershed

Factors limiting the distribution of the sensitive lichen Usnea longissima in the Oregon Coast Range : habitat or dispersal?

Effects of current velocity, irradiance, and herbivory on algal assemblages in laboratory streams

Organic pesticide modification of the species interactions in an annual plant community

Cytokinin oxidase activity from Phaseolus vulgaris L. cv. Great Northern callus tissues

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