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Nitrogen dynamics in a coastal upwelling regime

Creator:: Dickson, Mary-Lynn
Resource Type:: Dissertation

The distribution and partitioning of dissolved organic matter off the Oregon Coast : a first look

Creator:: Hill, Jon K.
Abstract:: The purpose of this thesis is to provide a first look at the spatial and temporal distributions of dissolved organic material (DOM) off the Oregon coast of North America. While this paper is not a comprehensive examination of these distributions, several patterns are identified as promising candidates for continued research....
Resource Type:: Masters Thesis
Full Text:: Dissolved Organic Matter off the Oregon Coast: A First Look. Abstract approved: Patricia A. Wheeler The

Dynamics of organic matter production and degradation during coastal diatom blooms

Creator:: Wetz, Michael S.
Abstract:: Experiments were designed to answer key questions about diatom-derived organic matter cycling (i.e., production and degradation) in coastal systems. Dissolved organic matter (DOM) production was examined in axenic batch cultures of five diatom species. Dissolved organic carbon (DOC) release rates varied between species, but were significantly higher for all species...
Resource Type:: Dissertation
Full Text:: : ________________________________________________________________________ Patricia A. Wheeler Experiments were designed to answer key questions about

Production and partitioning of organic matter during simulated phytoplankton blooms

Creator:: Wetz, Michael S.
Abstract:: Few studies have examined the partitioning of organic matter in upwelling systems, despite the fact that these systems play a key role in carbon and nitrogen budgets in the ocean. We examined the production and partitioning of phytoplankton-derived organic matter in deck incubations off Oregon during the upwelling season. During...
Resource Type:: Masters Thesis
Full Text:: Organic Matter During Simulated Phytoplankton Blooms. Abstract approved: Patricia A. Wheeler Few

The release of total and dissolved organic carbon from macroalgae and phytoplankton

Creator:: Kawasaki, Nobuyuki
Abstract:: Many phytoplankton and macroalgae release dissolved organic carbon (DOC). Many macroalgae also produce and store secondary metabolites which in some case have been shown to deter their grazers. The metabolites may be released into the surrounding seawater and could inhibit primary production. On the other hand, some phytoplankton can use...
Resource Type:: Masters Thesis

Submicron particulate organic nitrogen and dissolved organic nitrogen in the central equatorial Pacific

Creator:: Libby, P. Scott
Resource Type:: Masters Thesis

El Nino related variations in nutrient and chlorophyll distributions off Oregon

Creator:: Corwith, Holly L.
Abstract:: The Oregon continental shelf waters are typically characterized by four to five major upwelling events that occur between May and October. The upwelled water is rich in nutrients, which fuels an increase in phytoplankton biomass. The onset of El Nino, however, can disrupt the normal physical processes along the Oregon...
Resource Type:: Masters Thesis
Full Text:: Variations in Nutrient and Chlorophyll Distributions off Oregon Abstract approved Patricia A. Wheeler The

Comparative study of the population dynamics, secondary productivity, and reproductive ecology of the euphausiids Euphausia pacifica and Thysanoessa spinifera in the Oregon upwelling region

Creator:: Gutierrez, Jaime Gomez
Abstract:: I compare the seasonal abundance variation, population dynamics, fecundity, egg hatching mechanism and success, and apostome ciliate parasites of the euphausiids Euphausia pac?fica and Thysanoessa spinfera from the Oregon coast, USA. Community structure and nearshore distributions were examined from bi-weekly oceanographic surveys (1970-1972). This region has a strong cross-shelf change...
Resource Type:: Dissertation
Full Text:: the other members of my Graduate Committee Patricia A. Wheeler, Bruce McCune, and William Warren for

Impact of tropical instability waves on nutrient and chlorophyll distributions in the equatorial Pacific

Creator:: Evans, William Wiley
Abstract:: Tropical instability waves (TIWs) are prominent seasonal features in both the equatorial Pacific and Atlantic Oceans. This work quantifies their role in modulating the distributions of nutrients and phytoplankton biomass. Using an eight year record of biannual ship observations along the Tropical Atmosphere Ocean (TAO) buoy array, cruise sections crossing...
Resource Type:: Masters Thesis
Full Text:: Tropical Atmosphere Ocean (TAO) buoy array, cruise sections crossing TIWs were identified. Both a case

Sea-air CO₂ flux variability on the northeast Pacific continental margin

Creator:: Evans, Wiley
Abstract:: Carbon dioxide (CO₂) fluxes between the ocean and atmosphere on continental margins are difficult to diagnose because these regions experience large variability over spatial and temporal scales spanning meters to basins and hours to years, respectively. In a global sense, continental margins could represent a significant atmospheric CO₂ sink, equivalent...
Resource Type:: Dissertation
Full Text:: helpful feedback on chapter 3, and is a coauthor on the manuscript for that chapter. Drs. Pat Wheeler

ScholarsArchive@OSU

Nitrogen dynamics in a coastal upwelling regime

The distribution and partitioning of dissolved organic matter off the Oregon Coast : a first look

Dynamics of organic matter production and degradation during coastal diatom blooms

Production and partitioning of organic matter during simulated phytoplankton blooms

The release of total and dissolved organic carbon from macroalgae and phytoplankton

Submicron particulate organic nitrogen and dissolved organic nitrogen in the central equatorial Pacific

El Nino related variations in nutrient and chlorophyll distributions off Oregon

Comparative study of the population dynamics, secondary productivity, and reproductive ecology of the euphausiids Euphausia pacifica and Thysanoessa spinifera in the Oregon upwelling region

Impact of tropical instability waves on nutrient and chlorophyll distributions in the equatorial Pacific

Sea-air CO₂ flux variability on the northeast Pacific continental margin

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