Index Catalog // ScholarsArchive@OSU

Microbial ecology of an old-growth Douglas fir canopy

Creator:: Caldwell, Bruce A.
Abstract:: Microbial populations associated with the major substrates of the canopy of a 70 m old-growth Douglas fir were studied to determine potential activities. Seasonal samples from bark, foliage, epiphytic moss, lichens, and litter accumulations were collected to i) obtain population data, ii) to isolate the major groups of microorganisms present,...
Resource Type:: Masters Thesis
Full Text:: Microbial ecology of an old-growth Douglas fir canopy

Microbial community dynamics associated with rhizosphere carbon flow

Creator:: Butler, Jessica L.
Abstract:: The cycling of root-deposited photo synthate (rhizodeposition) through the soil microbial biomass is widely recognized as a critical component of ecosystem functioning. Little is currently known about the flow of photosynthate through the microbial biomass however. My research goal was to examine if and how the flow of root-deposited photo...
Resource Type:: Masters Thesis
Full Text:: , J.J. 2002. Stable isotopes and biomarkers in microbial ecology. FEMS Microbiology Ecology 40, 85-95

Molecular analysis of bacterial community dynamics during bioaugmentation studies in a soil column and at a field test site

Creator:: Li, Jun
Abstract:: 1,1,1-Tricholorethane (1,1,1-TCA), a widely used industrial solvents, is one of the most common subsurface contaminants. Transformation processes in the subsurface can result in the production of 1,1-dichioroethane (1,1-DCA) and 1,1- dichioroethene (l,1-DCE) from 1,1,1-TCA contamination, resulting in plumes of mixed chlorinated aliphatic hydrocarbons (CAHs). A butane-utilizing microorganism, strain 1 83BP,...
Resource Type:: Masters Thesis
Full Text:: efficiencies for TCA and DCE were approximately 96% and 77%, respectively. Microbial results indicated that

The ARM assay for the measurement of protistan bacterivory rates and ammonium regeneration efficiencies

Creator:: Suzuki, Marcelino
Resource Type:: Masters Thesis

Strategies for Altering Energy Flux in Thalassiosira pseudonana Elucidated by Transcriptomics

Creator:: Pombrol, Michelle
Abstract:: Diatoms play a major role in ocean biogeochemical cycles and are important tools in bioengineering for natural products and nanotechnology. Diatoms and other algae growing at varying resource-limited growth rates allocate carbon to different metabolic pathways to optimize growth; however, the molecular mechanisms controlling these pathway gating strategies are not...
Resource Type:: Masters Thesis
Full Text:: microorganisms, recent studies have used transcriptomics to probe the ecology, physiology, and evolution of

Linking soluble C to microbial community composition and dynamics during decomposition of ¹³C-labeled ryegrass

Creator:: McMahon, Shawna K.
Abstract:: Ryegrass residue consists of three main C fractions: readily available soluble C, intermediately available cellulose and hemicellulose, and slowly available lignin. Changes in chemical composition during decomposition influence rate of degradation as well as composition of the microbial community involved. Use of ¹³C-labeled plant material coupled with analysis of phospholipid...
Resource Type:: Masters Thesis
Full Text:: soil microbial ecology, an examination of current methodology and some of the limitations of PLFA

Microbial alteration of the seafloor

Creator:: Josef, Jennifer A.
Abstract:: In the early 1980's the first evidence of biological alteration of basalt glass (sideromelane) was published. Since that time additional evidence, including DNA staining, isotopic abundance and chemical mapping, has come to light suggesting that this unique alteration of glass can be attributed to microbial activity. Microbial alteration textures have...
Resource Type:: Masters Thesis
Full Text:: of Master of Science in Oceanography presented on November 30, 2005. Title: Microbial Alteration of

Evaluating microbial indicators of environmental condition in Oregon rivers

Creator:: Pennington, Alan Travis
Abstract:: Traditional public health bacterial indicators of water quality and the Biolog® system were evaluated to compare their response to other indicators of stream condition with the state of Oregon and between ecoregions (Coast Range, Willamette Valley, Cascades, and Eastern Oregon). Forty-three randomly selected Oregon rivers were sampled during the summer...
Resource Type:: Masters Thesis
Full Text:: : Evaluating Microbial Indicators of Environmental Condition in Oregon Rivers. Abstract approved:. Anna K

Disturbances in a marine bacterioplankton system drive community assembly towards niche-based processes

Creator:: Vergin, Kevin L.
Abstract:: Over 100 monthly bacterioplankton DNA samples, from each of the surface and 200 m depths at the Bermuda Atlantic Time-series Study (BATS) site, were analyzed for community assembly processes. Correlation networks, filtered for potential autocorrelation artifacts, were constructed for each depth. Network characteristics for the two depths were remarkably similar...
Resource Type:: Masters Thesis
Full Text:: NSF Microbial Observatory grants and an investigator award from the Gordon and Betty Moore

An epifluorescence method for assessing viability of bacteria in soil aggregates

Creator:: Shiozawa, Tracy L.
Resource Type:: Masters Thesis
Full Text:: R. Bartha. Microbial Ecology: Fundamentals and Applications. Daryl Fox (ed.) 4th ed. Menlo Park

ScholarsArchive@OSU

Microbial ecology of an old-growth Douglas fir canopy

Microbial community dynamics associated with rhizosphere carbon flow

Molecular analysis of bacterial community dynamics during bioaugmentation studies in a soil column and at a field test site

The ARM assay for the measurement of protistan bacterivory rates and ammonium regeneration efficiencies

Strategies for Altering Energy Flux in Thalassiosira pseudonana Elucidated by Transcriptomics

Linking soluble C to microbial community composition and dynamics during decomposition of ¹³C-labeled ryegrass

Microbial alteration of the seafloor

Evaluating microbial indicators of environmental condition in Oregon rivers

Disturbances in a marine bacterioplankton system drive community assembly towards niche-based processes

An epifluorescence method for assessing viability of bacteria in soil aggregates

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