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Browsing Theses and Dissertations (Botany and Plant Pathology) by Issue Date

Browsing Theses and Dissertations (Botany and Plant Pathology) by Issue Date

Now showing items 1-20 of 198

Cytotaxonomic studies in Iris, section Apogon Baker, subsection Californicae diels

Clarkson, Quentin Deane (1954-08-12)
Thermal and chemotherapeutic measures against nematode pests of economic plants

Caveness, Fields E. (1956-05-08)
Genetic variations in length of active growth period among races of Douglas fir, Pseudotsuga menziesii (Mirb.) Franco

Irgens-Moller, Helge (1958-02-28)
Lethal surface temperatures and their interpretation for Douglas-fir

Silen, Roy R. (1960-02-12)
Taxonomy of marine nematodes occurring along Pacific Northwest coasts

Murphy, Donald Guy (1961-05-10)
Active survivial of Verticillium dahliae in soil

Martinson, Charlie Anton (1963-08-24)
Contributions to the plant ecology of the Oregon coastal sand dunes

Wiedemann, Alfred M. (1966-04-27)

Sand dunes are found along the coasts of most of the large land masses of the world. Because of their proximity to man and his activities, the maritime sand dunes of Europe, particularly Germany, France, Holland and S ...
Taxonomy of some endophytic and epiphytic genera of Phaeophyta on the Oregon coast

O'Flaherty, Mary Louise (1966-05-11)
Effects of variations in salinity and temperature on some estuarine macro-algae

Kjeldsen, Chris Kelvin (1966-08-12)
Spatial and developmental patterns of the vegetation of Black Butte, Oregon

Sherman, Robert James (1968-07-31)

Black Butte presents a unique natural laboratory for ecological study. It is a volcanic cone of uniform configuration located in the rain shadow on the east flank of the Oregon Cascades. Soils are of very recent origi ...
Ecology of benthic microalgae of estuarine intertidal sediments

Riznyk, Raymond Zenon (1969-05-09)

The benthic microalgae of sediments of the two tidal flats in Yaquina Bay, Oregon were investigated to determine the environmental factors limiting the abundance and the horizontal and vertical distribution of these o ...
The culture and biochemical analysis of some estuarine phytoplankton species

DeMort, Carole Lyle (1969-08-15)

The biochemical composition of ten species of estuarine phytoplankton was determined. Studies were made of their growth in various culture media and of their relative value as food for oyster larvae. Nine of the speci ...
Salinity as a factor controlling the distribution of benthic estuarine diatoms

Martin, John Varick (1970-04-24)

A two phase investigation was undertaken in an attempt to determine the effects of variations in salinity on the distribution of benthic estuarine diatoms. The estuary studied was that of the Yaquina River which originat ...
Degradation of phenolic components of Douglas-fir bark by fungi

Ross, William David, 1937- (1970-10-19)
Laboratory studies of successional patterns in assemblages of attached estuarine diatoms

Berglund, Lisette Aline (1972-06-28)

Successional patterns of attached estuarine diatoms were investigated using laboratory model ecosystems. Artificial substrates of acrylic plastic were exposed to 0, 4, and 10 hours of desiccation per day. Diatom assem ...
Vegetative ecology of Hunts Cove, Mt. Jefferson, Oregon

Campbell, Alcetta Gilbert (1973-02-22)

The vegetative communities in the subalpine meadows of Hunts Cove, Mt. Jefferson, and some of the major environmental factors affecting them were studied in the summer of 1971. Hunts Cove is in the subalpine Tsuga mer ...
Vegetation and fire history of a Ponderosa pine-white fir forest in Crater Lake National Park

McNeil, Robert Curlan (1975-07-14)
Morphology, physiology and pathogenicity of Trichoconis padwickii Ganguly, the cause of Stackburn disease of rice

Chuaiprasit, Chalermlarb (1975-10-20)
The distribution of planktonic diatoms in Yaquina Estuary, Oregon

Karentz, Deneb (1975-12-09)
The distribution of intertidal diatoms associated with the sediments of Yaquina Estuary, Oregon

Amspoker, Michael C. (1977-03-17)

Sediment samples were collected from eight sampling sites along the Yaquina Estuary, Oregon from Yaquina Bay to Elk City near the head of the estuary. Samples were collected in November 1973, February 1974, May 1974 a ...