Index Catalog // ScholarsArchive@OSU

Are there two subgroups of albacore, Thunnus alalunga, in the North Pacific? Evidence from variability in catch, seasonal migrations, and length composition for two subgroups in the coastal fishery of North America

Creator:: Barr, Charles M.
Abstract:: North Pacific albacore (Thunnus alalunga) is a highly migratory and commercially valuable species of tuna. All stock assessments and management decisions for North Pacific albacore are presently based on the assumption of a single, uniform stock. However, a growing body of evidence from diverse sources suggests that there are two...
Resource Type:: Masters Thesis
Full Text:: presented on June 9, 2009 Title: Are there Two Subgroups of Albacore, Thunnus alalunga, in the North

Ocean distribution of the American shad (Alosa sapidissima) along the Pacific coast of North America

Creator:: Pearcy, William G. and Fisher, Joseph P.
Abstract:: We examined the incidental catches of American shad (Alosa sapidissima) taken during research cruises and in commercial and recreational landings along the Pacific coast of North America during over 30 years of sampling. Shad, an introduced species, was mainly found over the shallow continental shelf, and largest catches and highest...
Resource Type:: Article
Full Text:: , anadromous fish native to the east coast of North America, where it ranges from Florida to the Bay of

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:: Charles B. Miller (COAS), William T. Peterson (NOAA), Margaret Knight (Sb), Edward Brinton (Sb), Annie

Turbulence in sheared, salt-fingering favorable environment

Creator:: Kimura, Satoshi
Abstract:: Instability and turbulence in sheared, salt-fingering favorable stratification are studied using three-dimensional direct numerical simulations (DNS). Salt-fingering favorable stratification is gravitationally stable, because the unstable vertical gradient of salinity is stabilized by temperature (warm, salty over cool, fresh water-masses). Salt-fingering instability can occur at the interface of these different water-masses....
Resource Type:: Dissertation
Full Text:: : Turbulence in Sheared, Salt-fingering Favorable Environment Abstract approved: William D. Smyth

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:: William Wiley Evans IV for the degree of Master of Science in Oceanography presented on June 23, 2006

Effects of ultraviolet-B radiation on marine phytoplankton

Creator:: Behrenfeld, Michael Joseph
Abstract:: Global increases in ultraviolet-B radiation (UVBR:290- 320 nm) resulting from decreases in stratospheric ozone concentration have the potential to alter marine primary production and affect global climate and marine trophic dynamics. Effects of UVBR on phytoplankton carbon fixation were determined from open ocean exposure studies conducted off the coast of...
Resource Type:: Dissertation
Full Text:: ultraviolet-B radiation on NO3 and NH4 uptake by natural plankton assemblages from the North Pacific Ocean

Hydrographic data from the GLOBEC long-term observation program off Oregon, 1999 and 2000

Creator:: Fleischbein, Jane, Huyer, Adriana, 1945-, Smith, Robert L. (Robert Lloyd), 1935-, Oregon State University. College of Oceanic and Atmospheric Sciences, and Global Ocean Ecosystems Dynamics (Program)
Abstract:: As part of the GLOBEC Northeast Pacific Program, a Long Term Observation Program (LTOP) of repeated hydrographic observations along lines off Oregon began in September 1997 (Fleischbein et al, 1999). Of these lines, NH, off Newport, had been sampled frequently during the decade from 1961 to 1970, and another, FM,...
Resource Type:: Technical Report
Full Text:: Profiles of Fluorometer Voltage, Transmissometer Voltage, and Dissolved Oxygen 221 Appendix B: Oxygen

Distribution, seasonal variation and community structure of the demersal trawl fauna of Ragay Gulf, Philippines

Creator:: Jamir, Tomas Vergel C.
Resource Type:: Dissertation
Full Text:: . Seasonal Variation and Community Abstract approved: William G. Pearcy The demersal fish community

Model projections of the North Atlantic thermohaline circulation for the 21st century assessed by observations

Creator:: Schmittner, Andreas, Latif, M., and Schneider, B.
Abstract:: Most climate models predict a weakening of the North Atlantic thermohaline circulation for the 21st century when forced by increasing levels of greenhouse gas concentrations. The model spread, however, is rather large, even when the forcing scenario is identical, indicating a large uncertainty in the response to forcing. In order...
Resource Type:: Article
Full Text:: , and B. Schneider (2005), Model projections of the North Atlantic thermohaline circulation for the

Hydrographic data from the GLOBEC long-term observation program off Oregon, 1997 and 1998

Creator:: Fleischbein, Jane, Hill, Jon, Huyer, Adriana, 1945-, Smith, Robert L. (Robert Lloyd), 1935-, Wheeler, Patricia A., and Global Ocean Ecosystems Dynamics (Program)
Resource Type:: Technical Report
Full Text:: , Transmissometer Voltage, and Dissolved Oxygen 221 Appendix B: Oxygen Calibration Data 285 3 List of Tables

ScholarsArchive@OSU

Are there two subgroups of albacore, Thunnus alalunga, in the North Pacific? Evidence from variability in catch, seasonal migrations, and length composition for two subgroups in the coastal fishery of North America

Ocean distribution of the American shad (Alosa sapidissima) along the Pacific coast of North America

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

Turbulence in sheared, salt-fingering favorable environment

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

Effects of ultraviolet-B radiation on marine phytoplankton

Hydrographic data from the GLOBEC long-term observation program off Oregon, 1999 and 2000

Distribution, seasonal variation and community structure of the demersal trawl fauna of Ragay Gulf, Philippines

Model projections of the North Atlantic thermohaline circulation for the 21st century assessed by observations

Hydrographic data from the GLOBEC long-term observation program off Oregon, 1997 and 1998

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