Index Catalog // ScholarsArchive@OSU

Biotic soil crusts of Oregon's shrub steppe

Creator:: Ponzetti, Jeanne M.
Abstract:: This research examines the community composition of biotic soil crusts at nine sites in central and eastern Oregon, U.S.A. At each site, data were collected in one pair of livestock-grazed and excluded transects. Variables recorded included: cover of biotic soil crusts and vascular plant species, soil surface pH, electrical conductivity,...
Resource Type:: Masters Thesis

Propagule sources, disturbance characteristics and the inital establishment of riparian vegetation after debris flows

Creator:: Gecy, Jeanne Leslie
Abstract:: Debris flows are a major cause of disturbance to riparian vegetation. Both observational and experimental studies were used to examine the initial recovery of riparian vegetation after debris flows on headwater streams in the western Cascades of Oregon. My goal was to determine the roles of seedlings and vegetative sprouts,...
Resource Type:: Masters Thesis
Full Text:: inital establishment of riparian vegetation after debris flows AN ABSTRACT OF THE THESIS OF Jeanne

A potato growth and production model

Creator:: Apple, Jeanne Debons
Abstract:: A potato plant growth and production model is developed with the objectives of analyzing management alternatives and exploring the nature of the early dying syndrome. The geographic area of focus was the centerpivot irrigated circles of Oregon's Columbia Basin. A problem analysis of the potato production system of this area,...
Resource Type:: Dissertation
Full Text:: THESIS OF Jeanne Debons Apple for the degree of Doctor of Philosophy in Botany and Plant Pathology

An Interdisciplinary-Botanical Perspective for Cultural Resource Management: A Definition and the Application of Culturally Significant Plants in Identification, Interpretation, and Evaluation for the National Register of Historic Places

Creator:: Burk, Rene F.
Abstract:: Cultivated plants are often living artifacts that can aid in evaluation of historic or cultural landscapes. However, a working definition for “culturally significant plant” is currently lacking in the guidance literature for the cultural resource management practitioners. Based on a review of the literature on cultivated plants as indicators of...
Resource Type:: Masters Thesis
Full Text:: please contact M. Kat Anderson” Anderson (2005), is author of, Tending the Wild: Native American

Transposon-induced nutritional and virulence mutants in two pathovars of Pseudomonas syringae

Creator:: Anderson, Dirk M.
Resource Type:: Masters Thesis
Full Text:: Pathovars of Pseudomonas syringae AN ABSTRACT OF THE THESIS OF Dirk M. Anderson for the degree of Master

Cryptogam communities in forest and steppe ecosystems of Oregon, USA

Creator:: Root, Heather T.
Abstract:: I focus on addressing knowledge gaps relating to management of cryptogams in Oregon's public lands in Pseudotsuga menziesii-Tsuga heterophylla forests on the west side of the Cascade Range and dryland steppe in the Cascade Range's rainshadow. While a great deal of research has illustrated the importance of late-successional forests for...
Resource Type:: Dissertation
Full Text:: species. The elevation ranged from 236 to 369 m and the mean annual precipitation was 127 cm (Cissel et

An evaluation of the invasion potential of Kochia prostrata (forage kochia) in southwestern Idaho, USA

Creator:: Gray, Erin C.
Abstract:: Purposeful introductions of exotic species for rehabilitation efforts following wildfire are common on rangelands in the western U.S., though potential ecological impacts of introduced species in novel environments are often poorly understood. One such introduced species, Kochia prostrata (L.) Schrad (forage kochia) has been seeded on over 200,000 ha throughout...
Resource Type:: Masters Thesis
Full Text:: seeding boundary were greater than those previously reported, ranging from 0 to 710 m, with a mean

Biological Soil Crusts of the Great Basin : An Examination of their Distribution, Recovery from Disturbance and Restoration

Creator:: Condon, Lea A.
Abstract:: We are at risk of losing the sagebrush steppe in the floristic Great Basin to the invasion of Bromus tectorum L., cheatgrass. The floristic Great Basin includes the Central Basin and Range, the Northern Basin and Range, and the Snake River Plain. The Great Basin receives most of its precipitation...
Resource Type:: Dissertation
Full Text:: north and south respectively. Biocrusts are particularly sensitive to grazing by livestock (Ponzetti

Illustration list for Macrolichens of the Pacific Northwest, 3rd edition (2023)

Creator:: McCune, Bruce and Geiser, Linda
Abstract:: We give references for illustrations in the third edition of Macrolichens of the Pacific Northwest. For each illustration, we list the photographer or illustrator, the specimen photographed, where the specimen was from, collector, collection number, and herbarium.
Resource Type:: Other
Full Text:: , OR Ponzetti 1034 MCC Inset in key Fuscopannaria leprosa detail McCune Douglas Co, OR McCune 26286 MCC

Laboratory studies of bacteriophagous nematodes as potential vectors of insect pathogens

Creator:: Wright, Billie Dean
Abstract:: Three species of bacteriophagous nematodes, Pristionchus lheritieri (Maupas) Paramanov, Pelodera chitwoodi (Bassen) Dougherty and Rhabditis sp. were studied to determine their potential roles as vectors of selected insect pathogens, Bacillus thuringiensis Berliner, Beauveria bassiana (Balsamo) Vuillemin, Metarrhizium anisopliae (Metchnikoff) Sorokin and a nuclear polyhedrosis virus of Trichoplusia ni Hubner. Chlorine...
Resource Type:: Dissertation
Full Text:: . bassiana and M. anisopliae proved to be more susceptible to the action of chlorine than the

ScholarsArchive@OSU

Biotic soil crusts of Oregon's shrub steppe

Propagule sources, disturbance characteristics and the inital establishment of riparian vegetation after debris flows

A potato growth and production model

An Interdisciplinary-Botanical Perspective for Cultural Resource Management: A Definition and the Application of Culturally Significant Plants in Identification, Interpretation, and Evaluation for the National Register of Historic Places

Transposon-induced nutritional and virulence mutants in two pathovars of Pseudomonas syringae

Cryptogam communities in forest and steppe ecosystems of Oregon, USA

An evaluation of the invasion potential of Kochia prostrata (forage kochia) in southwestern Idaho, USA

Biological Soil Crusts of the Great Basin : An Examination of their Distribution, Recovery from Disturbance and Restoration

Illustration list for Macrolichens of the Pacific Northwest, 3rd edition (2023)

Laboratory studies of bacteriophagous nematodes as potential vectors of insect pathogens

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