Index Catalog // ScholarsArchive@OSU

Integration of oceanographic information off the Washington and Oregon coasts into west coast groundfish ecology and fisheries management

Creator:: Juan Jorda, Maria Jose
Abstract:: To date, the use of oceanographic data in fisheries management has been limited by the scarcity and the difficulty of accessing complete oceanographic datasets. Consequently, fish stocks are managed with limited knowledge about the habitat where fish live and incomplete understanding of what oceanographic conditions affect their populations. With the...
Resource Type:: Masters Thesis
Full Text:: from you. I would like to acknowledge my committee members: Elizabeth Clarke, Waldo Wakefield, Jim

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

Integration of submersible transect data andhigh-resolution sonar imagery for a habitat-based groundfish assessment of Heceta Bank, Oregon

Creator:: Nasby, Nicole M.
Abstract:: Dramatic declines in several groundfish populations have occurred along the U.S. West Coast during the last decade (PFMC 1999, Sampson 1997, Ralston 1998, Bloeser 1999). One problem exacerbating these declines is insufficient stock assessments, especially for species of west coast rockfish (Family Scorpaenidae, Genus Sebastes) which comprise the core of...
Resource Type:: Capstone Project
Full Text:: of 1 - 2 m (Hughes Clarke et al. 1996). Multibeam Sonar A survey of Heceta Bank

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

A rapid ecological assesment (REA) of coral reefs and reef fishes of barrier islands within central Belize barrier reef complex utilizing the mesoamerican barrier reef systems (MBRS) protocol

Creator:: Gomez, Gianna M.
Abstract:: Rapid assessments are essential to establish baseline information of ecosystems that can be used to design management plans such as marine protected areas. A rapid ecological assessment was conducted to determine the conditions of coral reefs and reef fish around barrier islands that occur within the central Belize Barrier Reef...
Resource Type:: Capstone Project
Full Text:: Reef Systems (MBRS) Protocol by Gianna M. Gomez Research Report Submitted to Marine Resource

The Relative Importance of Wind Strength and Along-Shelf Bathymetric Variations on the Separation of a Coastal Upwelling Jet

Creator:: Castelao, Renato M. and Barth, John A.
Abstract:: A high-resolution numerical model with idealized topography is used to investigate the degree to which a coastal upwelling jet separates from the shelf as it flows around a submarine bank depending on the wind strength and the horizontal scale of the bank. Experiments were run using several wind forcing magnitudes...
Resource Type:: Article
Full Text:: Bathymetric Variations on the Separation of a Coastal Upwelling Jet RENATO M. CASTELAO AND JOHN A. BARTH

Nonlinear internal waves on the continental shelf

Creator:: Shroyer, Emily L.
Abstract:: The properties and evolution of nonlinear internal waves (NLIWs) depend upon the background conditions within which waves form, propagate, and dissipate. As a result, the NLIW field on the New Jersey shelf displayed dramatic variability during the Shallow Water 2006 experiment. Wave variability was exhibited by 1) amplitudes that ranged...
Resource Type:: Dissertation
Full Text:: ranged from 5 m to over 20 m, 2) irregular wave arrival times, and 3) wave forms that were either mode-1

Geochemical and helium isotopic variability within the Lau Basin

Creator:: Goddard, Charlotte Ives
Abstract:: This research incorporates geochemical and helium isotopic analyses of Lau Basin volcanic glasses, along with helium isotopic analyses of water column hydrothermal plumes to better understand the processes that control the formation and evolution of this backarc basin. Lavas newly collected from the four southernmost segments of the Valu Fa...
Resource Type:: Dissertation
Full Text:: target areas. The δ3He anomalies revealed by the hydrocast profiles are ~200 m thick at each site. The

Parameterizing the natural fluorescence kinetics of Thalassiosira weissflogii

Creator:: Laney, Samuel R., Letelier, Ricardo M., and Abbott, Mark R.
Abstract:: We examined variability in the natural fluorescence yield of a neritic diatom, Thalassiosira weissflogii, in continuous cultures. In this species, kinetics in natural fluorescence yield over time scales less than a photoperiod were characterized by sharp decreases, occurring at irradiance intensities that presumably coincide with the onset of nonphotochemical fluorescence...
Resource Type:: Article
Full Text:: Laney, S. R., R. M. Letelier, and M. R. Abbott. Parameterizing the

Energy transport by nonlinear internal waves

Creator:: Moum, J. N., Klymak, J. M., Nash, J. D., Perlin, A., and Smyth, W. D.
Abstract:: Winter stratification on Oregon’s continental shelf often produces a near-bottom layer of dense fluid that acts as an internal waveguide upon which nonlinear internal waves propagate. Shipboard profiling and bottom lander observations capture disturbances that exhibit properties of internal solitary waves, bores, and gravity currents. Wavelike pulses are highly turbulent...
Resource Type:: Article
Full Text:: of Oceanic and Atmospheric Sciences, Oregon State University, Corvallis, Oregon J. M. KLYMAK

ScholarsArchive@OSU

Integration of oceanographic information off the Washington and Oregon coasts into west coast groundfish ecology and fisheries management

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

Integration of submersible transect data andhigh-resolution sonar imagery for a habitat-based groundfish assessment of Heceta Bank, Oregon

Seconds to hour scale photosynthetic responses in marine microalgae

A rapid ecological assesment (REA) of coral reefs and reef fishes of barrier islands within central Belize barrier reef complex utilizing the mesoamerican barrier reef systems (MBRS) protocol

The Relative Importance of Wind Strength and Along-Shelf Bathymetric Variations on the Separation of a Coastal Upwelling Jet

Nonlinear internal waves on the continental shelf

Geochemical and helium isotopic variability within the Lau Basin

Parameterizing the natural fluorescence kinetics of Thalassiosira weissflogii

Energy transport by nonlinear internal waves

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