Index Catalog // ScholarsArchive@OSU

Population and community ecology of the red alga Rhodomela larix (Turner) C. Agardh, on the central Oregon coast

Creator:: D'Antonio, Carla Marie, 1956-
Abstract:: Aspects of the life history and ecology of the intertidal turf-forming alga Rhodomela larix (Turner) C. Agardh were examined over a two year period at several sites on the Oregon coast. Rhodomela occurred over a broad tidal range and exhibited different growth and morphology characteristics with respect to tidal height....
Resource Type:: Masters Thesis
Full Text:: larix (Turner) C. Agardh, on the central Oregon coast AN ABSTRACT OF THE THESIS OF Carla M. D'Antonio

"Playing with computers" : the hidden impact of the computer in a school

Creator:: Turner, Martha I.
Abstract:: The topic of this study is the cultural impact of the computer in a school. "Impact" is 'defined as the cultural consequences of intended and unintended learning that occur when computers are used in the school. The major theoretical orientations of the work include the concepts of manifest and latent...
Resource Type:: Dissertation
Full Text:: computer in a school AN ABSTRACT OF THE THESIS OF Martha I. Turner for the degree of Doctor of

Feeding, colonization and impact of the cinnabar moth, Tyria jacobaeae, on Senecio triangularis, a novel, native host plant

Creator:: Diehl, Jonathan W.
Abstract:: I conducted field and laboratory studies to determine the impact of the cinnabar moth, Tvria jacobaeae L., on the native perennial herb, Senecio triangularis Hook. The cinnabar moth was introduced into Oregon in 1960 to control the noxious weed Senecio jacobaea L. and is now well established on both the...
Resource Type:: Masters Thesis
Full Text:: , Native Host Plant Abstract approved: Redacted for privacy Peter B. McEvoy I conducted field and

Plant architectural barriers to feeding site selection by the meadow spittlebug, Philaenus spumarius (L.)

Creator:: Hoffman, George D.
Abstract:: While current theories describing the insect-plant interaction have emphasized the biochemical aspects of the relationship, morphological components can also play a significant role in determining which plants or tissues are susceptible to insect attack. Xylem sap on which spittlebugs feed may lack many of the plant compounds responsible for host...
Resource Type:: Masters Thesis
Full Text:: : Redacted for Privacy Dr. Peter B. McEvoy. While current theories describing the insect-plant interaction

The relative impact of single vs. multiple agents on the biological control of Tansy ragwort (Senecio jacobaea)

Creator:: James, Rosalind R.
Abstract:: Field experiments were done to test the relative effectiveness of single and multiple biological control agents in reducing weed populations using two insects, the cinnabar moth, Tvria iacobaeae (L.), and the ragwort flea beetle, Lonqitarsus iacobaeae (Waterhouse). These two insects were released for biological control of the biennial weed tansy...
Resource Type:: Masters Thesis
Full Text:: ) Abstract approved: Redacted for Privacy Peter B1 McEvoy Field experiments were done to test the relative

Carbene rearrangements : intramolecular interaction of a triple bond with a carbene center

Creator:: Dan̄ino, José C.
Abstract:: The tosylhydrazones of 2-heptanone, 4,4-dimethy1-2- heptanone, 6-heptyn-2-one and 4,4-dimethy1-6-heptyn-2- one were synthesized and decomposed under a variety of reaction conditions: dry lithium and sodium salt pyrolyses, sodium methoxide thermolyses in diglyme and photolyses of the lithium salt in tetrahydrofuran. The saturated analogues 2-heptanone tosylhydrazone and its 4,4-dimethyl isomer afforded the...
Resource Type:: Dissertation
Full Text:: ACKNOWLEDGEMENTS It is difficult to express with words the gratitude the author feels towards Professor Peter K

Effects of flooding on peach, apple, quince and several pear species

Creator:: Andersen, Peter C.
Abstract:: A series of experiments was designed to investigate differential flood-tolerance and the phenomenon of flood-induced stomatal closure of several fruit tree species. The first two experiments were conducted with potted plants submerged outdoors 5-10 cm above the soil line. Plant morphology, growth, leaf conductance (cL), and soil oxygen diffusion rate...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE THESIS OF PETER C. ANDERSEN for the degree

Genetics of sexuality and population genetics of Phellinus weirii

Creator:: Angwin, Peter A.
Abstract:: Phellinus weirii (Murr.) Gilbertson, cause of laminated root and butt rot, is a heterothallic basidiomycete lacking clamp connections. Two biological species groups of the fungus have been hypothesized, the Douglas-fir and cedar-types, on the basis of physiological, morphological and epidemiological differences. Single-spore and vegetative isolates differ in cultural morphology, nuclear...
Resource Type:: Dissertation
Full Text:: weirii AN ABSTRACT OF THE THESIS OF Peter Andrew Angwin for the degree of Doctor of Philosophy in

Diverse consumer guilds in intertidal communities of Oregon and the Republic of Panama and their effects on prey assemblages

Creator:: Gaines, Steven D.
Abstract:: Low intertidal communities of Oregon and Panama have many predator and herbivore species. This diversity of consumers is important to the organization of both communities because of qualitative differences among the consumer species in their ability to circumvent specific prey defenses. In Oregon, the red alga Iridaea cordata is protected...
Resource Type:: Dissertation
Full Text:: , constructive criticism, and unending friendship; my friends and fellow students Teresa Turner and Bill Rice

Dinitroaniline-herbicide resistance in goosegrass (Eleusine indica) : ecophysiological aspects

Creator:: Valverde, Bernal E.
Abstract:: Growth of individual goosegrass (Eleusine indica (L) Gaertn.) plants of three dinitroaniline-herbicide resistant (R) and three susceptible (S) biotypes from North Carolina, South Carolina, and Mississippi was analyzed in greenhouse experiments. Leaf area and biomass measurements, including root, shoot, above-ground, and total dry weights were similar among the biotypes studied....
Resource Type:: Dissertation
Full Text:: , Dr. Peter Bottom ley, and Dr. Sonia Anderson, for their time and support. Thanks also goes to Gloria

ScholarsArchive@OSU

Population and community ecology of the red alga Rhodomela larix (Turner) C. Agardh, on the central Oregon coast

"Playing with computers" : the hidden impact of the computer in a school

Feeding, colonization and impact of the cinnabar moth, Tyria jacobaeae, on Senecio triangularis, a novel, native host plant

Plant architectural barriers to feeding site selection by the meadow spittlebug, Philaenus spumarius (L.)

The relative impact of single vs. multiple agents on the biological control of Tansy ragwort (Senecio jacobaea)

Carbene rearrangements : intramolecular interaction of a triple bond with a carbene center

Effects of flooding on peach, apple, quince and several pear species

Genetics of sexuality and population genetics of Phellinus weirii

Diverse consumer guilds in intertidal communities of Oregon and the Republic of Panama and their effects on prey assemblages

Dinitroaniline-herbicide resistance in goosegrass (Eleusine indica) : ecophysiological aspects

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