Index Catalog // ScholarsArchive@OSU

Dynamic seascapes : a quantitative framework for scaling pelagic ecology and biogeochemistry

Creator:: Kavanaugh, Maria T.
Abstract:: Understanding and modeling microbial responses and feedbacks to climate change is hampered by a lack of a framework in the pelagic environment by which to link local mechanism to large scale patterns. Where terrestrial ecology draws from landscape theory and practice to address issues of scale, the pelagic seascape concept...
Resource Type:: Dissertation
Full Text:: Abstract approved: _____________________________________ Ricardo M Letelier Understanding and

The South Atlantic Ocean response to local and remote forcings

Creator:: Fetter Filho, Antonio F. H.
Abstract:: The local and remote sources of variability of the South Atlantic Ocean are investigated using a set of numerical experiments and satellite data. A global, eddy-permitting, numerical simulation is analyzed to investigate the dynamical links between the Antarctic Circumpolar Current (ACC) and the Malvinas Current (MC). The model results indicate...
Resource Type:: Dissertation
Full Text:: South Atlantic Ocean Response to Local and Remote Forcings Abstract approved: Ricardo P. Matano The

Kinetics and equilibria of magnesian calcite in seawater-like solutions: laboratory studies

Creator:: Rushdi, Ahmed I. M.
Resource Type:: Dissertation
Full Text:: Redacted for Privacy ACKNOWLEDGEMENTS First, I would like to thank my major advisor, Ricardo Pytkowicz

Phosphate equilibria in seawater and interstitial waters

Creator:: Atlas, Elliot Leonard
Resource Type:: Dissertation
Full Text:: SEAWATER AND INTERSTITIAL WATERS Abstract approved: Ricardo M. Pytkowicz In this thesis, the chemistry

Phosphorus physiology and environmental forcing of oceanic cyanobacteria, primarily Trichodesmium spp.

Creator:: White, Angelicque E.
Abstract:: The biological transformation of dinitrogen gas (N2) into combined forms(termed N2 fixation) by certain genera of oceanic cyanobacteria represents the largest incoming flux of nitrogen to the global ocean. As such, biological nitrogen fixation plays a significant role in the regulation of oceanic productivity and the export of carbon and...
Resource Type:: Dissertation
Full Text:: : _____________________________________________________________________ Ricardo M. Letelier Yvette H. Spitz The biological

Seconds to hour scale photosynthetic responses in marine microalgae

Creator:: Laney, Samuel R.
Abstract:: Our view of phytoplankton has historically revolved around their inability to control their location in space. The term phytoplankton itself underscores this particular difference between phytoplankton and their sessile terrestrial counterparts. Yet there are other differences between land plants and the phytoplankton that are perhaps equally important, beyond this sessile-planktonic...
Resource Type:: Dissertation
Full Text:: Abstract approved: _____________________________________________________________________ Ricardo M

The effect of river discharge and wind forcing on the Oregon coastal ocean during fall and winter

Creator:: Mazzini, Piero Luigi Fernandes
Abstract:: Freshwater provided from river discharge influences the dynamics and circulation of most continental shelves around the world. It has profound effects on the transport and fate of materials and substances originated from rivers and estuaries, as well as on the ocean biogeochemistry and marine ecosystems. The effect of buoyancy forcing...
Resource Type:: Dissertation
Full Text:: Shearman, Ricardo Matano and Jim Lerczak, for their great attention, being always available, opened, and

Bacterioplankton in the Oregon upwelling system: distribution, cell-specific leucine incorporation, and diversity

Creator:: Longnecker, Krista
Abstract:: Marine bacterioplankton play an important role in global elemental cycles because they return carbon dioxide and nutrients to the biosphere as they reduce organic matter. Furthermore, marine bacterioplankton are not uniformly active, and subpopulations of the in situ community may be more or less active at any given time. Defining...
Resource Type:: Dissertation
Full Text:: members (Kate Field, Steve Giovannoni, Wayne Huber, and Ricardo Letelier) have also asked intriguing and

Prokaryotes associated with marine crust

Creator:: Mason, Olivia Underwood
Abstract:: Oceanic crust covers nearly 70% of the Earth's surface, of which, the upper, sediment layer is estimated to harbor substantial microbial biomass. Marine crust; however, extends several kilometers beyond this surficial layer, and includes the basalt and gabbro layers. In particular, the basalt layer has high permeabilities which allows for...
Resource Type:: Dissertation
Full Text:: also like to thank my committee members, Drs. Michael S. Rappé, Ricardo M. Letelier, Mario E. Magana

Late Quaternary paleoceanography of the Northeast Pacific and Atlantic Oceans based on diatom transfer functions

Creator:: Lopes, Cristina Isabel Coelho Dias
Abstract:: Modern upwelling conditions and corresponding oceanographic properties are investigated and reconstructed for the Late Quaternary. The oceanographic conditions considered influence diatom ecology and the record of fossil diatom frustules in the sediments. Diatoms from modern sediments are evaluated as paleoceanographic proxies and transfer functions (TFs) are calibrated using the Imbrie...
Resource Type:: Dissertation
Full Text:: committee members Nicklas Pisias, Ricardo Letelier, Peter Clark and Stephen Giovannoni and to Jim McManus

ScholarsArchive@OSU

Dynamic seascapes : a quantitative framework for scaling pelagic ecology and biogeochemistry

The South Atlantic Ocean response to local and remote forcings

Kinetics and equilibria of magnesian calcite in seawater-like solutions: laboratory studies

Phosphate equilibria in seawater and interstitial waters

Phosphorus physiology and environmental forcing of oceanic cyanobacteria, primarily Trichodesmium spp.

Seconds to hour scale photosynthetic responses in marine microalgae

The effect of river discharge and wind forcing on the Oregon coastal ocean during fall and winter

Bacterioplankton in the Oregon upwelling system: distribution, cell-specific leucine incorporation, and diversity

Prokaryotes associated with marine crust

Late Quaternary paleoceanography of the Northeast Pacific and Atlantic Oceans based on diatom transfer functions

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