Index Catalog // ScholarsArchive@OSU

Kinetics of plankton respiration across gradient of anoxic to oxic conditions

Creator:: Jayawickrama, Clare
Abstract:: Ocean deoxygenation is predicted to increase in severity over the next few decades, posing a threat to marine life and fishing economies. Improved predictions of ocean deoxygenation depend on a better understanding of the biogeochemical mechanisms that underly this process. Within the realm of biogeochemical mechanisms, this project specifically investigated...
Resource Type:: Honors College Thesis
Full Text:: . Respiration in Aquatic Ecosystems, 2005. Giovannoni, Stephen J., Darin H. Hayakawa, H. James Tripp, Ulrich

A genomic and proteomic characterization of the first cultured oligotrophic marine Gammaproteobacterium from the SAR92 clade

Creator:: Mellbye, Brett L.
Abstract:: High-throughput culturing (HTC) consisting of extinction culturing in autoclaved seawater has led to the isolation and characterization of many novel strains of oligotrophic marine bacteria. Strain HTCC 2207 was isolated from the Oregon coast by the HTC method. Phylogenetic analysis based on 16S rRNA gene sequence showed that this strain...
Resource Type:: Honors College Thesis
Full Text:: : _______________________________________________ Stephen J. Giovannoni High-throughput culturing (HTC) consisting of

Characterizing Growth Promoters and Inhibitors of SAR11 Pelagibacter sp. HTCC7211

Creator:: Lee, Connie
Abstract:: SAR11 is a clade of marine bacteria that are the most abundant heterotrophs in ocean surface water. They play a significant role in marine carbon cycling. Although many culturing experiments have been done on SAR11, there was no research that focused on verifying the observations about inhibition of SAR11 growth...
Resource Type:: Honors College Thesis
Full Text:: Stephen Giovannoni SAR11 is a clade of marine bacteria that are the most abundant heterotrophs

Microbial Abundance and Community Analysis in Devil’s Hole, Harrington Sound, Bermuda

Creator:: Denman, Carmen C.
Abstract:: Microbial activity within elevated CO2 and oxygen depleted environments changes with density driven stratification overturn in the seasonally anoxic region of Devil’s Hole, Bermuda. The temperature gradient developed during the summer months creates a natural laboratory to study bacterial and virus population density and microbial community dynamics in the anoxic...
Resource Type:: Honors College Thesis
Full Text:: ., Kevin L. Vergin, Jang-Cheon Cho, Michael S. Rappe, Craig A. Carlson, and Stephen J. Giovannoni

Microbial Abundance and Community Analysis in Devil’s Hole, Harrington Sound, Bermuda

Creator:: Denman, Carmen C.
Abstract:: Microbial activity within elevated CO2 and oxygen depleted environments changes with density driven stratification overturn in the seasonally anoxic region of Devil’s Hole, Bermuda. The temperature gradient developed during the summer months creates a natural laboratory to study bacterial and virus population density and microbial community dynamics in the anoxic...
Resource Type:: Honors College Thesis
Full Text:: ., Kevin L. Vergin, Jang-Cheon Cho, Michael S. Rappe, Craig A. Carlson, and Stephen J. Giovannoni

Arsenic methylation by marine cyanobacteria Prochlorococcus and Synechococcus

Creator:: Lee, Mikaela
Abstract:: Our experiments aimed to investigate responses of the marine cyanobacteria Prochlorococcus and Synechococcus to toxic arsenic species, such as arsenate, and to understand cellular mechanisms that contribute to arsenic tolerance. We used two strains of Prochlorococcus, a high-light adapted MED4 and low-light adapted MIT9313, both axenic, for cultivation experiments. For...
Resource Type:: Honors College Thesis
Full Text:: . . Abstract approved:_____________________________________________________ Stephen Giovannoni Our

Volatile Organic Compound Production in Synechococcus WH8102

Creator:: Ocel, Duncan R.
Abstract:: High-resolution mass spectrometry was used to measure a range of volatile organic compounds (VOCs) in real time as they were produced by the ubiquitous marine cyanobacterium Synechococcus WH8102 during a 24-hour light/dark cycle. Ethenone, acetaldehyde, ethanol, isoprene, acetic acid, dimethyl sulfide (DMS), acetone, phenol, and several as-yet unidentified compounds were...
Resource Type:: Honors College Thesis
Full Text:: _____________________________________________________________________ Stephen Giovannoni, Committee Member, representing Department of Microbiology

Polyphasic taxonomy of marine bacteria from the SAR11 group Ia: Pelagibacter ubiquis (strain HTCC1062) & Pelagibacter bermudensis (strain HTCC7211)

Creator:: Brown, Sarah N., Giovannoni, Stephen, and Cho, Jang-Cheon
Abstract:: Marine bacteria from the SAR11 clade (class Alphaproteobacteria), specifically strains HTCC1062 and HTCC7211, were characterized according to a polyphasic taxonomic approach. Maximum cell densities and growth rates at various temperatures, salinities, and pH’s were analyzed. Strains HTCC1062 and HTCC7211 were observed as having different growth optimums. On the basis of...
Resource Type:: Article and Presentation

Studying the ancient parasitic cnidarian, Sphaerospora elegans, leads to better understanding of oligochaete diversity and myxozoan discovery

Creator:: Lehrburger, David J.
Abstract:: Myxozoans are microscopic parasites, related to corals and jellyfish. Most Myxozoa probably have two-host lifecycles that require a vertebrate (typically fish) and invertebrate (annelid or bryozoan). However no life cycle is known from the Sphaerospora lineage. I hypothesized that the life cycle of Sphaerospora elegans, a myxozoan parasite of three-spined...
Resource Type:: Honors College Thesis
Full Text:: :_____________________________________________________ Stephen Atkinson Myxozoans are microscopic parasites, related to corals and jellyfish

Evaluation of ECOSTRESS products for estimation of leaf and grape water stress for Southern Oregon vineyards

Creator:: Swafford Steffensen, Collen
Abstract:: Accurate estimation of water stress in vineyards could prove vital for optimizing irrigation and grape quality in a changing climate. The ECOsystem Spaceborne Thermal Radiometer Experiment on the Space Station (ECOSTRESS) offers potential to remotely sense vineyard water stress but lacks validation against in-field measurements in vineyards. In this study,...
Resource Type:: Honors College Thesis
Full Text:: :_____________________________________________________ Stephen Good Accurate estimation of water stress in vineyards could prove vital for

ScholarsArchive@OSU

Kinetics of plankton respiration across gradient of anoxic to oxic conditions

A genomic and proteomic characterization of the first cultured oligotrophic marine Gammaproteobacterium from the SAR92 clade

Characterizing Growth Promoters and Inhibitors of SAR11 Pelagibacter sp. HTCC7211

Microbial Abundance and Community Analysis in Devil’s Hole, Harrington Sound, Bermuda

Microbial Abundance and Community Analysis in Devil’s Hole, Harrington Sound, Bermuda

Arsenic methylation by marine cyanobacteria Prochlorococcus and Synechococcus

Volatile Organic Compound Production in Synechococcus WH8102

Polyphasic taxonomy of marine bacteria from the SAR11 group Ia: Pelagibacter ubiquis (strain HTCC1062) & Pelagibacter bermudensis (strain HTCC7211)

Studying the ancient parasitic cnidarian, Sphaerospora elegans, leads to better understanding of oligochaete diversity and myxozoan discovery

Evaluation of ECOSTRESS products for estimation of leaf and grape water stress for Southern Oregon vineyards

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