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- W221930336 abstract "This document consists of two Master's theses. The first addresses the distribution of the polychaete worm, {und Nephtys caecoides} in the Columbia River estuary, and possible environmental factors affecting that distribution. {und N. caecoides} was found to have a uniform distribution from offshore to a point approximately eight kilometers into the bay. Salinity, temperature and sediment composition do not seem to limit the range of this polychaete, but it is possible that sediment porosity, organic content and temperature interact to limit the range in summer months. The second thesis examines gamma emitting radionuclides and their distribution in the Pacific salmon, {und Oncorhynchus}. Some species-specific differences are attributable to feeding habits, while others reflect the influence of isotopes in the Columbia River, and thus may provide a measure of migratory patterns. Zinc 65 and manganese 54 appear to be most suited for a role as ecological tracers. 82 refs., 21 figs., 15 tabs. (MHB)" @default.
- W221930336 created "2016-06-24" @default.
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- W221930336 date "1966-06-01" @default.
- W221930336 modified "2023-09-27" @default.
- W221930336 title "Ecological studies of radioactivity in the Columbia river Estuary and adjacent Pacific Ocean. [Nephtys caecoides:a2]" @default.
- W221930336 hasPublicationYear "1966" @default.
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