Index Catalog // ScholarsArchive@OSU

Effects of light, nutrients, and grazing on periphyton communities in streams

Creator:: Gregory, Stanley Vincent
Abstract:: Relative effects of light, nutrients, and grazing on primary production were investigated in streams in the Cascade Mountains of Oregon and in laboratory streams. Relative magnitudes of primary production and associated processes were examined for one year in a stream that flowed through a clearcut and an old-growth forest in...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE THESIS OF STANLEY VINCENT GREGORY for the

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
Full Text:: Distribution of Fishes in Upper Klamath Lake AN ABSTRACT OF THE THESIS OF DAVID THOMAS VINCENT for the M. S

Analysis of a ³²P material balance method for measuring periphyton production in flowing water

Creator:: Gregory, Stanley Vincent
Abstract:: The ³²P material balance method for measuring periphyton production and grazing rates on periphyton in streams developed by Elwood and Nelson (1972) was evaluated by laboratory and field experiments. Three basic assumptions of the method were examined: 1) sloughing of periphyton from substrates is negligible, 2) sorption of ³²P onto...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Stanley Vincent Gregory for the

Age determination of corvina reina (Cynoscion albus) in the Gulf of Nicoya, based on otolith surface readings and microincrement analysis

Creator:: Mug-Villanueva, Moises
Abstract:: The corvina reina (Cynoscion albus) is an important part of the artisanal fishery in the Gulf of Nicoya, Costa Rica. Stock assessment on this sciaenid species has been restricted to the use of length-based methods because of the lack of age data. Direct age determination methodologies for tropical species often...
Resource Type:: Masters Thesis
Full Text:: : Vincent F. Gallucci (Thesis Professor) Redacted for Privacy James D. Hall (Major Professor) The corvina

Genetic patterns of demography and diversity in eastern North Pacific rockfishes (genus Sebastes)

Creator:: Johansson, Mattias L.
Abstract:: The 100 North Pacific rockfish species in the genus Sebastes are highly diverse. Rockfishes fertilize their eggs internally and release swimming larvae. Complex courting behaviors may allow female rockfish to be selective about their mates and may promote and maintain speciation. In this study, I applied genetic techniques to survey...
Resource Type:: Dissertation
Full Text:: dissertation. Dr. Vincent P. Buonaccorsi was central to planning, completing, and writing Chapter 1. Katie

Characteristics of pools used by adult summer steelhead (Oncorhynchus mykiss) in the Steamboat Creek Basin, North Umpqua River, Oregon

Creator:: Baigun, Claudio Rafael Mariano
Abstract:: This study examined features of deep pool (>0.8 m mean depth) used by adult summer steelhead in Steamboat Creek (1991-1992). Steamboat Creek had a heterogenous thermal profile, with some segments exceeding preferred temperature of steelhead. Deep pools were scarce (4% of the total habitat units) and 39% of them were...
Resource Type:: Masters Thesis
Full Text:: . North Umpgua River, Oregon. Abstract approved: James R. Sedeil This study examined features of deep

Growth and survival of juvenile hatchery and wild steelhead trout, Salmo gairdneri, in streams

Creator:: Reisenbichler, Reginald R.
Abstract:: Relative growth and survival of offspring from matings of hatchery and wild Deschutes River (Oregon) summer steelhead trout, Salmo gairdneri, were monitored to determine if hatchery fish differ genetically from wild fish in traits which can affect the stock-recruitment relationship of wild populations. Four natural streams and a hatchery pond...
Resource Type:: Masters Thesis
Full Text:: . Syst. Zool. 22:257-270. Vincent, E. R. 1 972. Effect of stocking catchable trout on wild trout

Early self-sorting behavior in Chinook salmon is correlated with variation in growth, behavior and morphology later in life.

Creator:: Unrein, Julia R.
Abstract:: Juvenile Chinook salmon (Oncorhynchus tshawytscha) exhibit an array of life history tactics in Oregon's Willamette River Basin, yet we do not know to what extent it is driven by phenotypic plasticity or whether it is predetermined and how conditions in the early rearing environment may affect phenotype expression. We have...
Resource Type:: Masters Thesis
Full Text:: ABSTRACT OF THE THESIS OF Julia R. Unrein for the degree of Master of Science in Fisheries Science

Impacts of Range Management Decisions on Native Pollinators: Innovative Grazing Practices and Riparian Restoration

Creator:: Mitchell, Scott R.
Abstract:: Animal pollination is critical to plant reproduction in agricultural and wildland ecosystems. Much of the production of seeds and fruits in natural areas, which underlie many food webs, depends on pollination services by insects. The taxon responsible for delivering the bulk of these services in most temperate systems is bees....
Resource Type:: Masters Thesis
Full Text:: described in both chapters. Lesley R. Morris and Scott B. Lukas contributed to the design and

Habitat selection of hatchery and wild juvenile salmonids in Eagle Creek Basin, Oregon

Creator:: Brignon, William R.
Abstract:: To best manage Eagle Creek National Fish Hatchery and minimize any negative impacts that the current hatchery program may be having on Endangered Species Act-listed salmonids in the Eagle Creek Basin, I determined if wild fish are being displaced from preferred habitats by hatchery salmonids Oncorhynchus spp. This thesis had...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF William R. Brignon

ScholarsArchive@OSU

Effects of light, nutrients, and grazing on periphyton communities in streams

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

Analysis of a ³²P material balance method for measuring periphyton production in flowing water

Age determination of corvina reina (Cynoscion albus) in the Gulf of Nicoya, based on otolith surface readings and microincrement analysis

Genetic patterns of demography and diversity in eastern North Pacific rockfishes (genus Sebastes)

Characteristics of pools used by adult summer steelhead (Oncorhynchus mykiss) in the Steamboat Creek Basin, North Umpqua River, Oregon

Growth and survival of juvenile hatchery and wild steelhead trout, Salmo gairdneri, in streams

Early self-sorting behavior in Chinook salmon is correlated with variation in growth, behavior and morphology later in life.

Impacts of Range Management Decisions on Native Pollinators: Innovative Grazing Practices and Riparian Restoration

Habitat selection of hatchery and wild juvenile salmonids in Eagle Creek Basin, Oregon

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