Index Catalog // ScholarsArchive@OSU

Plankton and nutrient ecology of the Columbia River estuary

Creator:: Haertel, Lois Steben
Abstract:: Monthly samples of nutrients, phytoplankton and zooplankton were taken in the Columbia River estuary over a period of 16 months in order to determine distribution with season and salinity, and interrelationships between plankton and nutrients. Nitrate and phosphate levels in the river water entering the estuary are high in the...
Resource Type:: Dissertation
Full Text:: : PLANKTON AND NUTRIENT ECOLOGY OF THE COLUMBIA RIVER ESTUARY Abstract approved: Charles Osterberg Monthly

Primary biomass and production processes in the Columbia River estuary

Creator:: Lara-Lara, Ruben
Resource Type:: Dissertation
Full Text:: PRODUCTION PROCESSES IN THE COLUMBIA RIVER ESTUARY. Abstract approved: The Columbia River Estuary appears

A calculation of flushing times and pollution distribution for the Columbia River estuary

Creator:: Neal, Victor Thomas
Abstract:: The probable pollution distribution and flushing times have been calculated for the Columbia River Estuary, a coastal plain estuary. The pollution distribution was determined by the fresh water fraction and by the diffusion equation. The flushing times were calculated by the modified tidal prism method and by the fraction of...
Resource Type:: Dissertation
Full Text:: OF FLUSHING TIMES AND POLLUTION DISTRIBUTION FOR THE COLUMBIA RIVER ESTUARY Abstract approved

Radioecology of ⁶⁵Zn in an arm of the Columbia River Estuary

Creator:: Renfro, William Charles
Abstract:: Levels of ⁶⁵Zn in water, sediments, plants, and animals in Alder Slough, a small ecosystem in the Columbia River Estuary, were determined periodically during a one year period. Concentrations of total Zn in organisms were also measured to permit computation of specific activities (μCi⁶⁵Zn/g total Zn). Temporal fluctuations in the...
Resource Type:: Dissertation
Full Text:: ecosystem in the Columbia River Estuary, were determined periodically during a one year period. Concen

Bioenergetics-based predator-prey relationships between piscivorous birds and juvenile salmonids in the Columbia River estuary

Creator:: Lyons, Donald E.
Abstract:: This dissertation focuses on the predator-prey relationship between two species of avian predators, Caspian terns (Hydroprogne caspia) and double-crested cormorants (Phalacrocorax auritus), and one of their important prey types, juvenile salmonids (Oncorhynchus spp.), in the Columbia River estuary of Oregon and Washington states during the period 1998 – 2007. I...
Resource Type:: Dissertation
Full Text:: Columbia River Estuary. Abstract approved: Daniel D. Roby This dissertation focuses on the

Piscivorous colonial waterbirds in the Columbia River estuary : demography, dietary contaminants, and management

Creator:: Suzuki, Yasuko
Abstract:: Caspian terns (Hydroprogne caspia) and double-crested cormorants (Phalacrocorax auritus) nest in large colonies on East Sand Island in the Columbia River estuary, the largest known colonies for the two species in the world. Both species of piscivorous colonial waterbirds have been identified as predators with a significant impact on the...
Resource Type:: Dissertation
Full Text:: colonies on East Sand Island in the Columbia River estuary, the largest known colonies for the two

Decline of radioactivity in the Columbia River and estuary : rates and mechanisms

Creator:: Johnson, Vernon Gene
Resource Type:: Dissertation
Full Text:: COLUMBIA RIVER AND ESTUARY: RATES AND MECHANISMS '11, Abstract approved: Norman Cutshail The decline

Seasonal concentration, turnover and mode of accumulation of ³²P by the juvenile starry flounder Platichthys stellatus (Pallas) in the Columbia River Estuary

Creator:: Bolen, John Joseph
Abstract:: The seasonal concentration, turnover and mode of accumulation of ³²P by the juvenile starry flounder in Alder Slough, a small eco-system in the Columbia River Estuary, was examined during 1969 and 1970. Levels of ³²P and concentrations of total P were measured to permit computation of specific activities (nCi³²P/g total...
Resource Type:: Dissertation
Full Text:: (PALLAS) IN THE COLUMBIA RIVER ESTUARY Abstract approved: Redacted for Privacy John 1-0 Lyford The

Prediction of hazardous Columbia River bar conditions

Creator:: Enfield, David B.
Abstract:: In this study methods were developed for the prediction of wave conditions that are hazardous to navigation at river entrances, with emphasis on applicability to the Columbia River. There are two basic components to the prediction system: (1) a semi-automated spectral method for forecasting the significant height and average period...
Resource Type:: Dissertation
Full Text:: Columbia River are such that partially mixed conditions usually ~xist. The stratification of the estuary

Dispersion of the Columbia River plume based on radioactivity measurements

Creator:: Frederick, Lawrence Churchill
Abstract:: An investigation has been made of several physical parameters of the effluent plume of the Columbia River as it enters the Pacific Ocean. Radioactive material in trace amounts enters the Columbia River from the Hanford nuclear reactors at Richland, Washington. One of these nuclides, chromium -51, has been used to...
Resource Type:: Dissertation
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ScholarsArchive@OSU

Plankton and nutrient ecology of the Columbia River estuary

Primary biomass and production processes in the Columbia River estuary

A calculation of flushing times and pollution distribution for the Columbia River estuary

Radioecology of ⁶⁵Zn in an arm of the Columbia River Estuary

Bioenergetics-based predator-prey relationships between piscivorous birds and juvenile salmonids in the Columbia River estuary

Piscivorous colonial waterbirds in the Columbia River estuary : demography, dietary contaminants, and management

Decline of radioactivity in the Columbia River and estuary : rates and mechanisms

Seasonal concentration, turnover and mode of accumulation of ³²P by the juvenile starry flounder Platichthys stellatus (Pallas) in the Columbia River Estuary

Prediction of hazardous Columbia River bar conditions

Dispersion of the Columbia River plume based on radioactivity measurements

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