Index Catalog // ScholarsArchive@OSU

Detection, classification and ecology of acoustic scattering layers

Creator:: Cade, David Edmund
Abstract:: Acoustic scattering layers of biological origin have been observed for nearly 70 years across the world’s oceans. The organisms that comprise these layers are known to be important features in most oceanic ecosystems, providing a vital trophic link between small phytoplankton grazers and larger species. There are many aspects of...
Resource Type:: Masters Thesis
Full Text:: Scattering Layers AN ABSTRACT OF THE THESIS OF David Edmund Cade for the degree of Master of

Light and the behavior of pelagic animals during night and crepuscular periods

Creator:: Wisdom, Daniel W.
Abstract:: Light plays an important role in ecological processes in the ocean both day and night. While relatively inexpensive, off the shelf instruments are available to measure Photosynthetically Active Radiation or PAR during the day, efforts to quantify light levels at night have proven more difficult. The goal of this work...
Resource Type:: Research Paper
Full Text:: abundance and in-situ light level readings. For example, Nelson, et al. acoustically tracked the movement

Production and export of biogenic silica in the Southern Ocean

Creator:: Sigmon, Daniel E.
Abstract:: Dissolved silicic acid (Si(OH)4) and biogenic silica (BSiO2) concentrations were measured on four different cruises in the Southern Ocean along 1700 W from late October 1997 to mid-March 1998. These data were used to construct a vertically integrated Si budget in the surface layer from 58° to 68° S. Throughout...
Resource Type:: Masters Thesis
Full Text:: Silica in the Southern Ocean. Abstract approved: David M. Nelson Dissolved silicic acid (Si(OH)4) and

Phytoplankton of an ice-edge bloom in the Ross Sea, with special reference to the elemental composition of Antarctic diatoms

Creator:: Carbonell, Maria Consuelo
Abstract:: A phytoplankton bloom dominated by the pennate diatom Nitzschia curta (Van Heurck) Hasle was observed during January-February 1983 at a receding ice-edge in the Western Ross Sea, Antarctica. The core of the bloom was found between 100-150 Km from the ice-edge. Nitzschia curta cell densities up to 22 x 10⁶...
Resource Type:: Masters Thesis
Full Text:: . Abstract approve David M. Nelson A phytoplankton bloom dominated by the pennate diatom Nitzschia curta

Effects of physical phenomena on the distribution of nutrients and phytoplankton productivity in a coastal lagoon

Creator:: Millan-Nunez, Roberto
Resource Type:: Masters Thesis
Full Text:: approved: David M. Nelson Sea level, salinity, temperature, nitrate, nitrite, phosphate, silicate

The spring bloom of the silicoflagellate Dictyocha speculum in East Sound, Washington, with respect to certain environmental factors

Creator:: Fagerness, Vicki L.
Resource Type:: Masters Thesis
Full Text:: . Abstract approved: David M. Nelson During the spring of 1980 in East Sound, Washington, the

The economic feasibility of soybean production in Oregon

Creator:: Holst, David
Abstract:: Commercial production of soybeans in Oregon has been limited. In 1977, less than 1,500 acres were grown, primarily in the Columbia Basin area. However, interest in soybeans as a possible "new crop" for Oregon has arisen because of the (1) recent strong soybean price, (2) the high cost of transporting...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF DAVID LEE HOLST for the MASTER OF

Crystallization Rates of AIST and Ge Thin Films by Optical and Electron Microscopy

Creator:: Bird, Victoriea L.
Abstract:: The amorphous to crystalline phase change is of great interest for the production and operation of phase change memory and germanium electronic devices. Phase change memory relies on the ability to differentiate between differences in optical or electrical properties between the amorphous and crystalline phases of a single material. Amorphous...
Resource Type:: Masters Thesis
Full Text:: THESIS OF Victoriea L. Bird for the degree of Master of Science in Materials Science presented on

Considerations in the financing of Oregon dairy enterprises : investigations of three selected problem areas

Creator:: Miller, David Paul, 1949-
Abstract:: As the capital requirements for the modern dairy enterprise increase, the Oregon milk producer and his lender need more information concerning the profitability, solvency and liquidity of the enterprise on which to base their financial decisions. This research examines three areas where more information could be used to evaluate financial...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF David Paul Miller (Name) for the

Conservation of Sidalcea nelsoniana through habitat management : effects of burning, mowing, and altered flooding regime on a rare Willamette Valley perennial

Creator:: Bartels, Marilynn R.
Abstract:: Active habitat management plays a key role in the preservation of native ecosystems and rare species, especially in the Willamette Valley of Oregon, where natural succession to woodlands threatens the few wetland prairies remaining after 150 years of agriculture and urbanization. Sidalcea nelsoniana, listed as threatened under the federal Endangered...
Resource Type:: Masters Thesis
Full Text:: Leininger, Jeremy Filip, Machelle Nelson and several student workers for suffering through long, hot days

ScholarsArchive@OSU

Detection, classification and ecology of acoustic scattering layers

Light and the behavior of pelagic animals during night and crepuscular periods

Production and export of biogenic silica in the Southern Ocean

Phytoplankton of an ice-edge bloom in the Ross Sea, with special reference to the elemental composition of Antarctic diatoms

Effects of physical phenomena on the distribution of nutrients and phytoplankton productivity in a coastal lagoon

The spring bloom of the silicoflagellate Dictyocha speculum in East Sound, Washington, with respect to certain environmental factors

The economic feasibility of soybean production in Oregon

Crystallization Rates of AIST and Ge Thin Films by Optical and Electron Microscopy

Considerations in the financing of Oregon dairy enterprises : investigations of three selected problem areas

Conservation of Sidalcea nelsoniana through habitat management : effects of burning, mowing, and altered flooding regime on a rare Willamette Valley perennial

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