Index Catalog // ScholarsArchive@OSU

Factors affecting the abundance of fall chinook salmon in the Columbia River

Creator:: Van Hyning, Jack M.
Abstract:: A study of the population ecology of Columbia River fall chinook salmon, Oncorhynchus tshawytscha (Walbaum), was made in an attempt to determine the cause of a serious decline in this run which occurred in the early 1950's. Fluctuations in abundance of major salmon runs the North Pacific were examined to...
Resource Type:: Dissertation

The effects of the herbicides Diquat and Dichlobenil on pond invertebrates

Creator:: Wilson, Dennis Carl
Abstract:: The acute toxicity of Diquat (1:1-ethylene-2:2' dipyridylium dibromide) and Dichlobenil (2, 6-dichlorobenzonitrile) to six selected pond invertebrates was determined using the median tolerance limit estimation method. Diquat was more toxic to the amphipod, Hyalella azeteca than to the aquatic insects Callibaetis, Limnephilus, Enallagma, Libellula, and Tendipedidae. The addition of mud...
Resource Type:: Masters Thesis

The influence of some environmental factors on the distribution of fishes in Upper Klamath Lake

Creator:: Vincent, David Thomas
Abstract:: The fishes of Upper Klamath Lake appeared to distribute themselves in three general groups during the summers of 1964 and 1965: (1) the chubs--unrestricted as to distribution with slight seasonal variations; (2) rainbow trout and yellow perch -- restricted to certain water conditions that exist only along the northern marsh...
Resource Type:: Masters Thesis

The black crappie, Pomoxis nigromaculatus, as a farm pond fish in Oregon

Creator:: Stolte, Lawrence
Abstract:: The black crappie was evaluated as a pond fish in four experimental ponds in the Willamette Valley. Two ponds were stocked with largemouth bass, bluegill sunfish, and black crappie (1:9:3), and two ponds with largemouth bass and black crappie (1:3). Total biomass was greatest in the three-species ponds (80 kg/...
Resource Type:: Masters Thesis

The migratory pattern of audlt sockeye salmon (Oncorhynchus nerka) in Bristol Bay as related to the distribution of their home-river waters

Creator:: Straty, Richard R.
Abstract:: The individual stocks of sockeye salmon that make up the annual spawning migration to the Bristol Bay region of Western Alaska are produced in the lakes and streams of ten major river systems, which discharge into the bay over a shoreline distance of 120 miles. The hypothesis adopted in this...
Resource Type:: Dissertation

Growth of channel catfish, Ictalurus punctatus (Rafinesque), fed artificial diets in ponds near Corvallis, Oregon

Creator:: Suraswadi, Plodprasop
Abstract:: The experiment was conducted at the Soap Creek farm ponds near Corvallis, Oregon. Oregon Moist Pellet and Purina Trout Chow at three different rates of feeding for each diet were used to feed fingerling channel catfish stocked at the rate of 1,000 per acre. A complete random design and Fisher's...
Resource Type:: Masters Thesis

Some aspects of the comparative ecology of fishes associated with juvenile sockeye salmon, Oncorhynchus nerka (Walbaum), in the lakes of the Naknek river system, Alaska

Creator:: Wallace, Richard L.
Abstract:: A study of the distribution, relative abundance and diet of fishes sympatric with juvenile sockeye salmon, Oncorhynchus nerka (Walbaum), within the freshwater nursery areas of the Naknek River system was undertaken from 1961 to 1963. The study was part of an extensive investigation to determine what factors in the freshwater...
Resource Type:: Dissertation

A review of the deep water Liparidae from the coast of Oregon and adjacent waters

Creator:: Stein, David L.
Abstract:: Descriptions and distributions are given of 28 species of Liparidae occurring or possibly occurring below 200 m between San Francisco and northern Vancouver Island, with keys for their identifications. Nine genera are included: Careproctus, Elassodiscus, Lipariscus, Nectoliparis, Rhinoliparis, Acantholiparis, Paraliparis, and two new genera are described, Odontoliparis and Osteodiscus. Eight...
Resource Type:: Masters Thesis

Morphological and meristic characteristics of ten populations of blackside dace, Rhinichthys osculus nubilus (Girard ), from western Oregon

Creator:: Zirges, Malcolm H.
Abstract:: Blackside dace, Rhinichthys osculus nubilus (GIRARD), were collected from ten western Oregon streams and examined for variation among morphological and meristic characters. Several characters were observed to vary between populations studied. Number of vertebrae, number of scales in and above the lateral line, length of snout, and depth of body...
Resource Type:: Masters Thesis

Age and growth of cutthroat trout, Salmo clarki clarki Richardson, in the Rogue River, Oregon

Creator:: Tomasson, Tumi
Resource Type:: Masters Thesis

ScholarsArchive@OSU

Factors affecting the abundance of fall chinook salmon in the Columbia River

The effects of the herbicides Diquat and Dichlobenil on pond invertebrates

The influence of some environmental factors on the distribution of fishes in Upper Klamath Lake

The black crappie, Pomoxis nigromaculatus, as a farm pond fish in Oregon

The migratory pattern of audlt sockeye salmon (Oncorhynchus nerka) in Bristol Bay as related to the distribution of their home-river waters

Growth of channel catfish, Ictalurus punctatus (Rafinesque), fed artificial diets in ponds near Corvallis, Oregon

Some aspects of the comparative ecology of fishes associated with juvenile sockeye salmon, Oncorhynchus nerka (Walbaum), in the lakes of the Naknek river system, Alaska

A review of the deep water Liparidae from the coast of Oregon and adjacent waters

Morphological and meristic characteristics of ten populations of blackside dace, Rhinichthys osculus nubilus (Girard ), from western Oregon

Age and growth of cutthroat trout, Salmo clarki clarki Richardson, in the Rogue River, Oregon

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