Browse by Archive
1980-08-11 (iso8601)
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1981-01-23 (iso8601)
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Aspects of the limnology and benthic ecology of Upper Klamath Lake, Oregon, are described emphasizing those features that identify its uniqueness. The lake is large, shallow, and characterized by nuisance abundances of Aphanizomenon flos-aquae and...
1969-05-05 (iso8601)
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California bighorn sheep (Ovis canadensis californiana) were studied on Hart Mountain, Oregon, during the summer and fall of 1976, and the spring of 1977. The population consisted of a minimum of 196 sheep in June, 1977. The high number of lambs...
1978-02-03 (iso8601)
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Fishery researchers have attempted to preserve viable fish sperm for extended periods of time. Only limited success has been achieved with storage of spermatozoa from salmonids. The principal accomplishments of this investigation during the fiscal...
1968-03-19 (iso8601)
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The behavior and stream habitat utilization of juvenile hatchery-reared coho salmon (Ovicozihynchus kisutch) and wild cutthroat trout (Salmo clarki) were examined to assess the nature of interactions between the species potentially resulting from...
1981-03-11 (iso8601)
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The subject of this thesis is an evaluation of a louver facility
in the Lemhi River, Idaho. The louver facility was designed to guide
juvenile chinook salmon and steelhead trout into a trap in order to
sample downstream migrant populations. The...
1967-06-27 (iso8601)
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Data from the coho salmon migration were examined from three streams of the Alsea Watershed Study, conducted on tributaries to Drift Creek, Oregon, from 1959 through 1973. With the migration season defined as November 1 through May 31, the mean...
1979-12-17 (iso8601)
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Transferrin of Columbian black-tailed deer (Odocoileus
hemionus columbianus) displayed two types of polymorphism. One
type involved differences in sialic acid content. The nature of the
other polymorphism is not known. A hypothesis for three...
1971-08-18 (iso8601)
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This study examines the ecology and dynamics of coho salmon (Oncorhynchus kisutch) in environments experimentally altered by logging. The objective was to evaluate processes that stabilize or regulate the populations. Two small watersheds in...
1971-06-03 (iso8601)
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The osmoregulatory capabilities and tolerance of Kelp greenling, Hexagrammos decagramrnus, were studied in a series of seven salinities ranging from fresh water to concentrated sea water of 50 ppt. Results indicated that they were tolerant over a...
1984-11-16 (iso8601)
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Ptychoptera townesi (false crane fly, Diptera) occur in high densities in an experimental stream section that has not been allowed to exceed bankfull flow for more than two decades, but are quite rare in areas both upstream and downstream from...
1985-07-02 (iso8601)
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1973-04-24 (iso8601)
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