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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

Characterizing drivers of microbial community structure and function in diverse marine sediments

Creator:: Graw, Michael F.
Abstract:: Marine sediments are one of the largest habitats for microbial life on earth. These microorganisms play critical roles in biogeochemical cycling both within the subsurface and between the sediment and water columns. However, microbial communities in sediments are highly heterogeneous and the factors defining microbial community structure and metabolic function...
Resource Type:: Dissertation
Full Text:: presented on November 30, 2017. Title: Characterizing Drivers of Microbial Community Structure and

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

The proteomic and transcriptomic responses to iron, sulfur, and nitrogen limitation in the abundant marine bacterium Candidatus Pelagibacter ubique

Creator:: Smith, Daniel P.
Abstract:: Batch cultures of Candidatus Pelagibacter ubique were grown under iron-, organosulfur-, and nitrogen-limiting conditions to understand how this ubiquitous marine bacterium responds to and interacts with environments where growth is limited by the availability of these nutrients. Global gene expression was monitored using microarrays and quantitative mass spectrometry to observe...
Resource Type:: Dissertation
Full Text:: metabolic activities occurring in microbial communities [41]. Depending on nutrient availability and other

Bacterial community analysis, new exoelectrogen isolation and enhanced performance of microbial electrochemical systems using nano-decorated anodes

Creator:: Xu, Shoutao
Abstract:: Microbial electrochemical systems (MESs) have attracted much research attention in recent years due to their promising applications in renewable energy generation, bioremediation, and wastewater treatment. In a MES, microorganisms interact with electrodes via electrons, catalyzing oxidation and reduction reactions at the anode and the cathode. The bacterial community of a...
Resource Type:: Dissertation
Full Text:: requires an understanding of the ecology in microbial communities of MFCs. Many researchers have

Microbial enhanced oil recovery : a pore-scale investigation of interfacial interactions

Creator:: Armstrong, Ryan T.
Abstract:: Current oil production technologies recover only about one‐third to one‐half of the oil originally present in an oil reservoir. Given current oil prices, even a modest increase in oil recovery efficiency is fiscally attractive. One novel approach to increase oil recovery efficiency is a process called microbial enhanced oil recovery...
Resource Type:: Dissertation
Full Text:: Engineering Presented on January 6, 2012 Title: Microbial Enhanced Oil Recovery: A Pore‐Scale

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

Marine bacterioplankton abundances and distributions

Creator:: Morris, Robert M.
Abstract:: Microorganisms play key roles in ocean biogeochemistry. However, several predominant groups of uncultured bacterioplankton thought to contribute to important biogeochemical processes in the oceans are known primarily from gene cloning studies. Although these studies have greatly expanded our view of microbial diversity in the oceans, they are not quantitative and...
Resource Type:: Dissertation
Full Text:: Science Foundation. References 1. Giovannoni, S. & Rappé, M. in Microbial Ecology ofthe Oceans, (ed

ScholarsArchive@OSU

Microbial ecology of an old-growth Douglas fir canopy

Characterizing drivers of microbial community structure and function in diverse marine sediments

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

The proteomic and transcriptomic responses to iron, sulfur, and nitrogen limitation in the abundant marine bacterium Candidatus Pelagibacter ubique

Bacterial community analysis, new exoelectrogen isolation and enhanced performance of microbial electrochemical systems using nano-decorated anodes

Microbial enhanced oil recovery : a pore-scale investigation of interfacial interactions

Strategies for Altering Energy Flux in Thalassiosira pseudonana Elucidated by Transcriptomics

Marine bacterioplankton abundances and distributions

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