Index Catalog // ScholarsArchive@OSU

Relationships between fish species distribution and habitat in the Willamette River drainage in western Oregon

Creator:: Kruse, Amy Ellen
Abstract:: The objectives of this study were to (1) describe physical environmental conditions and species composition at several sites along an Upstream/downstream gradient in a number of tributaries of the Willamette River in western Oregon; and (2) identify possible relationships between species distributional patterns and physical habitat parameters using detrended correspondence...
Resource Type:: Masters Thesis
Full Text:: Redacted for privacy Abstract approved: , Hiram W. Li The objectives of this study were to (1) describe

Application and evaluation of ridge regression to selected empirical economic models

Creator:: Rahuma, Ali Ahmed
Resource Type:: Masters Thesis

Relationships between oceanographic factors and the distribution of juvenile coho salmon (Oncorhynchus kisutch) off Oregon and Washington, 1982-1983

Creator:: Chung, Alton W.
Abstract:: Juvenile coho salmon (101-400 mm) were sampled by purse seine off the Pacific Coast from Waatch Point, Washington to Four Mile Creek, Oregon, out to 30 mi offshore, during the months of May, June, and September in 1982 and 1983. Sea surface temperature, surface salinity, surface chlorophyll-a concentration, and Secchi...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Alton W. Chung for the degree of

Effects of seed characters and competitive environment on two-year performance of open-pollinated Douglas-fir families

Creator:: St. Clair, John Bradley
Abstract:: Ungerminated seed and recent germinants from 39 open-pollinated Douglas-fir (Pseudotsuga menziesii var. menziesii (Mirb.) Franco) families were planted in each of three competitive environments in order to determine the degree to which growth differences among families are influenced by competitive environment, seed weight, and date of emergence. The three competitive...
Resource Type:: Dissertation

A comparison of three systems of phenotypic selection for grain yield in three spring barley populations

Creator:: Hayes, Patrick M.
Abstract:: Concerns regarding the most effective means of evaluating segregating generations of spring barley prompted this investigation. Three methods of selection were considered: bulk, pedigree, and single seed descent. F₆ lines derived by each method were grown in a replicated yield trial. The effectiveness of each method was measured in terms...
Resource Type:: Masters Thesis
Full Text:: the members of my committee: Dr. Willis McCuistion, Dr. Roger Petersen, and Dr. Bruce Mackey. To

Changes in size and age at maturity of Columbia River upriver bright fall chinook salmon (Oncorhynchus tshawytscha) : implications for stock fitness, commercial value, and management

Creator:: Beaty, Roy E.
Abstract:: The average size and age of chinook salmon (Oncorhynchus tshawytscha) caught in commercial fisheries along the Pacific Coast of North America have decreased substantially in this century. These declines might be caused in part by changes in size and age at maturity within the stocks contributing to those fisheries. Upriver...
Resource Type:: Masters Thesis
Full Text:: graduate committee members -- Dr. Roger Petersen (emeritus), Dr. Cliff Pereira, and particularly Dr. Phil

Interaction of crop plant population with weed competition in corn (Zea mays L.), bush snap beans (Phaseolus vulgaris L.), and onion (Allium cepa L.) at differing stages of development

Creator:: Williams, Clarence Frank
Abstract:: Yield reductions due to competition of weeds with crop plants can be extremely important. Early weed competition can be as important in reducing crop yield as weed competition for the entire season. The objectives of this study were (1) to determine the weed control achieved by narrow row-cropping patterns, (2)...
Resource Type:: Dissertation
Full Text:: of the Botany Department, Dr. Roger Petersen of the Statistics Department, and Dr. R

Estimates of genetic variance and heterosis in F₁ winter x spring barley crosses (Hordeum vulgare, L.)

Creator:: Harrabi, Moncef Mohamed
Abstract:: Four winter and four spring barley cultivars along with their F₁ hybrids were grown on the Hyslop Agronomy Farm near Corvallis, Oregon, a high rainfall site (over 1000 mm annually) located in the Willamette Valley. The experiment consisted of four replications. Ten seeds of each F₁ and parents were seeded...
Resource Type:: Masters Thesis
Full Text:: , and for serving on my committee. Appreciation is also extended to Dr. Roger Petersen for his help

Association of selected traits with visual selection for yield in wheat (Triticum aestivum, L. em Thell.)

Creator:: Marciniak, Michael E.
Abstract:: Visual selection for grain yield may be a limiting factor in identifying superior yielding genotypes in a breeding program. This investigation was conducted (1) to compare the effectiveness of visual selection for grain yield by three selector groups representing different levels of plant breeding experience, and (2) to examine the...
Resource Type:: Masters Thesis
Full Text:: , Roger Petersen, and Mary Duryea for serving on my graduate committee. Thanks are extended to Dr. Fred

Biology of the myctophid fish, Diaphus theta Eigenmann and Eigenmann 1890, off the Oregon coast

Creator:: Acuna, Enzo S.
Resource Type:: Masters Thesis
Full Text:: to the members of my committee Drs. George Boehiert, Roger Petersen and David Thomas for their

ScholarsArchive@OSU

Relationships between fish species distribution and habitat in the Willamette River drainage in western Oregon

Application and evaluation of ridge regression to selected empirical economic models

Relationships between oceanographic factors and the distribution of juvenile coho salmon (Oncorhynchus kisutch) off Oregon and Washington, 1982-1983

Effects of seed characters and competitive environment on two-year performance of open-pollinated Douglas-fir families

A comparison of three systems of phenotypic selection for grain yield in three spring barley populations

Changes in size and age at maturity of Columbia River upriver bright fall chinook salmon (Oncorhynchus tshawytscha) : implications for stock fitness, commercial value, and management

Interaction of crop plant population with weed competition in corn (Zea mays L.), bush snap beans (Phaseolus vulgaris L.), and onion (Allium cepa L.) at differing stages of development

Estimates of genetic variance and heterosis in F₁ winter x spring barley crosses (Hordeum vulgare, L.)

Association of selected traits with visual selection for yield in wheat (Triticum aestivum, L. em Thell.)

Biology of the myctophid fish, Diaphus theta Eigenmann and Eigenmann 1890, off the Oregon coast

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