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

Diversity of bacterioplankton and plastid SSU rRNA genes from the eastern and western continental shelves of the United States

Creator:: Rappé, Michael Stephen
Abstract:: The phylogenetic diversity of two continental shelf picoplankton communities was examined by analyzing SSU (16S) ribosomal RNA (rRNA) genes amplified from environmental DNA with bacterial-specific primers and the polymerase chain reaction (PCR). Picoplankton populations collected from the pycnocline (10 m) over the eastern continental shelf of the United States near...
Resource Type:: Dissertation
Full Text:: . Abstract approved: Stephen J. Giovannoni The phylogenetic diversity of two continental shelf picoplankton

Outliers: The Unusual Characteristics of Marine Carbon-Oxidizing Bacterial Cells Adapted to Oligotrophic Conditions

Creator:: Noell, Stephen E.
Abstract:: Oligotrophic bacteria are adapted to low nutrient concentrations. As most of the ocean is oligotrophic (low in nutrients), oligotrophic bacteria thrive in the ocean and make up the majority of planktonic cells. Because of this, oligotrophs are crucial to oceanic nutrient cycles. However, marine oligotrophic bacteria are dwarfed by their...
Resource Type:: Dissertation
Full Text:: : ______________________________________________________ Stephen J. Giovannoni ABSTRACT Oligotrophic bacteria are adapted to low nutrient

Genome-enabled investigation of the minimal growth requirements andphosphate metabolism for Pelagibacter marine bacteria

Creator:: Carini, Paul J.
Abstract:: Members of the SAR11 clade of heterotrophic α-proteobacteria are ubiquitous and abundant in the world's oceans where they are thought to play a pivotal role in the global carbon cycle. The first SAR11 bacterium cultivated in vitro, 'Candidatus Pelagibacter ubique' HTCC1062 (Ca. P. ubique), was isolated by dilution into sterile...
Resource Type:: Dissertation
Full Text:: Phosphate Metabolism for Pelagibacter Marine Bacteria Abstract approved: Stephen J. Giovannoni

Quantification of Osmolytes in the Sargasso Sea Surface Layer Water Column

Creator:: Muslin, Omran
Abstract:: Oceanic carbon cycling plays a major role in determining global atmospheric CO₂. A better understanding of dissolved organic matter and its constituents in the water column and how it affects marine carbon cycling is sought after. This study successfully measured osmolytes, low molecular zwitterionic compounds derived from amino acids, in...
Resource Type:: Masters Thesis
Full Text:: : ______________________________________________________ Stephen J. Giovannoni Oceanic carbon cycling plays a major role in determining

Microbial diversity, metabolic potential, and transcriptional activity along the inner continental shelf of the Northeast Pacific Ocean

Creator:: Bertagnolli, Anthony D.
Abstract:: Continental shelves located along eastern boundary currents occupy relatively small volumes of the world’s oceans, yet are responsible for a large proportion of global primary production. The Oregon coast is among these ecosystems. Recent analyses of dissolved oxygen at shallow depths in the water column has suggested increasing episodes of...
Resource Type:: Dissertation
Full Text:: : _____________________________________________________ Stephen J. Giovannoni Continental shelves located along eastern boundary currents occupy

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:: . Abstract approved: ______________________________________________________ Stephen J. Giovannoni

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

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:: ', Kevin L. Vergin', William A. Siebold1, Craig A. Carlson2, and Stephen J. Giovannoni' 'Department of

ScholarsArchive@OSU

Kinetics of plankton respiration across gradient of anoxic to oxic conditions

Diversity of bacterioplankton and plastid SSU rRNA genes from the eastern and western continental shelves of the United States

Outliers: The Unusual Characteristics of Marine Carbon-Oxidizing Bacterial Cells Adapted to Oligotrophic Conditions

Genome-enabled investigation of the minimal growth requirements andphosphate metabolism for Pelagibacter marine bacteria

Quantification of Osmolytes in the Sargasso Sea Surface Layer Water Column

Microbial diversity, metabolic potential, and transcriptional activity along the inner continental shelf of the Northeast Pacific Ocean

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

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

Marine bacterioplankton abundances and distributions

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