Index Catalog // ScholarsArchive@OSU

The effects of X-ray CT scanning on microbial communities in sediment cores

Creator:: Ewton, Erica
Abstract:: Using X-ray computed tomography (CT) scanning to characterize the physical characteristics of soil and sediment cores allows scientists to observe and analyze stratigraphy without destroying the integrity of different layers. Microbiologists often work with geologists to characterize the microbial communities in such cores; however, X-rays are known to be destructive...
Resource Type:: Honors College Thesis
Full Text:: . Abstract approved:_____________________________________________________ Frederick Colwell

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:: : ______________________________________________________ Frederick S. Colwell Marine sediments are one of the largest habitats for microbial

Comparing Sediment Microbial Communities of Arctic Beaver Ponds to Tundra Lakes and Streams

Creator:: Shannon, Kelly
Abstract:: In recent decades the habitat of North American beaver (Castor canadensis) has expanded from boreal forests into pan-Arctic tundra ecosystems. It is unknown how the advance of beavers into Arctic watersheds will impact microbial communities responsible for the mineralization of organic matter (OM), which has implications for carbon cycling. To...
Resource Type:: Masters Thesis
Full Text:: Abstract approved: ______________________________________________________ Frederick Colwell In

Carbon Footprint Calculations for Oregon State University and Guadalupe, Cerro Punta, Panama

Creator:: Melendez-Rivera, Kimberly
Abstract:: Greenhouse gases effects are a leading contributor to climate change; reducing harmful effects of these gases is important for future generations. Worldwide, household consumption makes up seventy-two percent of greenhouse gas emissions, followed by government consumption at ten percent, and investments at eighteen percent (Hertwich, 2009). In order to understand...
Resource Type:: Undergraduate Thesis

Analysis and Modeling of Kinetic Parameters for Urea Hydrolysis by Bacteria for Use in Calcium Carbonate Precipitation in Aquifers

Creator:: Neighbor, Christopher J.
Abstract:: The use of ureolytic bacteria for the remediation of contaminated groundwater aquifers by inducing calcium carbonate precipitation is being studied in order to establish a better understanding of the modeling and prediction of how the bacteria will act in situ. This research has pursued the use of various ureolytic bacteria...
Resource Type:: Honors College Thesis
Full Text:: Calcium Carbonate Precipitation in Aquifers. Abstract Approved: Frederick Colwell

Geomicrobiology of marine sediment containing methane

Creator:: Briggs, Brandon R.
Abstract:: Marine sediments contain an abundance of methane that is biologically produced and plays a significant role in the global carbon cycle. Microbes responsible for the carbon cycle in marine sediments, and the processes that they carry out, need to be characterized in order to fully understand the role of this...
Resource Type:: Dissertation
Full Text:: approved: Frederick S. Colwell Marine sediments contain an abundance of methane that is

Construction of a model organism for performing calcium carbonate precipitation in a porous media reactor

Creator:: Kaufman, Megan J.
Abstract:: Aquifers are an important storage location and source of fresh groundwater. They may become polluted by a number of contaminants including mobile divalent radionuclides such as strontium-90 which is a byproduct of uranium fission. A method for remediating such divalent radionuclides is sequestration through co-precipitation into calcium carbonate. Calcium carbonate...
Resource Type:: Masters Thesis
Full Text:: in a Porous Media Reactor Abstract approved: Frederick S. Colwell Aquifers are an important

Microbial Community Dynamics of an Aquifer Biostimulated to Precipitate Calcite

Creator:: Ohan, Juliette
Abstract:: Microbial-induced calcite (CaCO₃) precipitation (MICP) is a well-known natural phenomenon where microbes precipitate calcite in their environment as a result of metabolic activity. It has recently been of interest as a bioengineered technique to stabilize soils for construction applications. A known metabolic pathway to induce MICP is ureolysis, where introduced...
Resource Type:: Masters Thesis
Full Text:: : ______________________________________________________ Frederick S. Colwell Microbial-induced calcite (CaCO3) precipitation (MICP) is a well

Microbiology of basalts targeted for deep geological carbon sequestration : field observations and laboratory experiments

Creator:: Lavalleur, Heather J.
Abstract:: With rising concentrations of CO₂ in the Earth's atmosphere causing concern about climate change, many solutions are being presented to decrease emissions. One of the proposed solutions is to sequester excess CO₂ in geological formations such as basalt. The deep subsurface is known to harbor much of the microbial biomass...
Resource Type:: Masters Thesis
Full Text:: Sequestration: Field Observations and Laboratory Experiments Abstract approved: Frederick S. Colwell

Establishment and dynamics of methane-oxidizing microbial communities in marine sediments

Creator:: Klasek, Scott A.
Abstract:: Marine sediments are vast sources and reservoirs of methane, a potent greenhouse gas. Most of this methane is anaerobically oxidized by archaea before it can reach the overlying ocean, though the efficiency of this process often depends on methane fluxes and mechanisms of fluid transport. Anaerobic methanotrophic archaea, or ANME,...
Resource Type:: Dissertation
Full Text:: : ____________________________________________________________ Frederick S. Colwell Abstract Marine sediments are vast sources and reservoirs of methane

ScholarsArchive@OSU

The effects of X-ray CT scanning on microbial communities in sediment cores

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

Comparing Sediment Microbial Communities of Arctic Beaver Ponds to Tundra Lakes and Streams

Carbon Footprint Calculations for Oregon State University and Guadalupe, Cerro Punta, Panama

Analysis and Modeling of Kinetic Parameters for Urea Hydrolysis by Bacteria for Use in Calcium Carbonate Precipitation in Aquifers

Geomicrobiology of marine sediment containing methane

Construction of a model organism for performing calcium carbonate precipitation in a porous media reactor

Microbial Community Dynamics of an Aquifer Biostimulated to Precipitate Calcite

Microbiology of basalts targeted for deep geological carbon sequestration : field observations and laboratory experiments

Establishment and dynamics of methane-oxidizing microbial communities in marine sediments

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