Index Catalog // ScholarsArchive@OSU

Landscape level patterns in biodiversity : plant species and biomass structure

Creator:: Heider, Christopher
Abstract:: In the tropics, widespread deforestation and conversion of primary forests to agricultural and pasture lands has resulted in losses of composition, structure, and functions of forest landscapes. Deforestation in the tropics is typically preformed via slash-and-burn practices; the byproducts from combustion have been identified as the second-highest form of anthropogenically...
Resource Type:: Masters Thesis
Full Text:: plant species accompanies this loss in forest structure. Biological diversity has been described as

Ecological effects of post-wildfire management activities (salvage-logging and grass-seeding) on vegetation composition, diversity, biomass, and growth and survival of Pinus ponderosa and Purshia tridentata

Creator:: Sexton, Timothy Ogden
Abstract:: Salvage-logging and artificial seeding of grass following wildfire are common practices in coniferous forests of the western United States, yet few studies have quantified the ecological effects of these post-fire activities. The effects of post-wildfire salvage-logging and grass-seeding on vegetation composition, aboveground biomass, and growth and survival of Pinus ponderosa...
Resource Type:: Masters Thesis

Ecological effects of spring and fall prescribed burning on basin big sagebrush : Idaho fescue--bluebunch wheatgrass communities

Creator:: Sapsis, David B.
Abstract:: The vegetation response of spring and fall prescribed fires in basin big sagebrush (Artemisia tridentata subsp. tridentata Nutt.)/Idaho fescue (Festuca idahoensis Elmer)--bluebunch wheatgrass (Agropyron spicatum Pursh. (Scribn. & Smith)) communities was measured at the John Day Fossil Beds National Monument in eastern Oregon. Objectives of the study were to quantify...
Resource Type:: Masters Thesis

Vegetation composition and response to fire of native Willamette Valley wetland prairies

Creator:: Pendergrass, Kathy L. (Connelly)
Abstract:: Fires set by Native Americans were important in shaping and maintaining Willamette Valley prairie plant communities. With fire exclusion after Euro-American settlement in the 1840's, composition of the remaining prairies shifted toward shrub and tree dominance with a concomitant decline in endemic prairie plant populations. I hypothesize that by restoring...
Resource Type:: Masters Thesis
Full Text:: , equitability, and diversity information by plant communities, treatments, and years

Hydrology and related soil features of three Willamette Valley wetland prairies

Creator:: Finley, Karen K.
Resource Type:: Masters Thesis
Full Text:: grasslands with high plant species diversity. Dominant native grass species of Willamette Valley wet

Ecology of woody riparian vegetation in tributaries of the Upper Grande Ronde River basin, Oregon

Creator:: Lytjen, Danna J.
Abstract:: Two studies on Catherine Creek and Meadow Creek of the Upper Grande Ronde River basin, quantified several physical and biotic influences on woody riparian community composition and structure. The Catherine Creek study examined the association of woody riparian species with elevational and geomorphic gradients. The Meadow Creek study examined the...
Resource Type:: Masters Thesis
Full Text:: physical environment to the diversity and abundance of riparian woody plant species. Riparian species are

Soil conditions along a hydrologic gradient and successional dynamics in a grazed and ungrazed montane riparian ecosystem

Creator:: Green, Douglas M. (Douglas Mitchell)
Resource Type:: Dissertation
Full Text:: : species richness, species diversity, evenness, and aboveground biomass. Eight common plant communities

Interactive influences of wildfire and nonnative species on plant community succession in Hawaii Volcanoes National Park

Creator:: Ainsworth, Alison
Abstract:: The role of fire as a natural disturbance, its interactions with nonnative species and effects of repeated fires in the Hawaiian Islands have received little investigation. We are unsure of the role fire played in shaping forest structure and composition as well as affecting evolutionary processes of the native biota....
Resource Type:: Masters Thesis
Full Text:: plant composition in relation to fire across an elevation gradient in Hawaii. Austral Ecology 25:507

Ecology of the Salix and Populus species of the Crooked River National Grassland

Creator:: Busse, Kathryn Grace
Abstract:: Riparian communities dominated by members of the Salicaceae (Salix lasiandra, S. lutea, S. lemmonii, Populus trichocarpa, P. tremuloides and S. exiqua) were studied at the Crooked River National Grassland in central Oregon. The objectives of this study were to examine the relationships between the Salix and Populus species and microsite...
Resource Type:: Masters Thesis
Full Text:: ecology of riparian plant species is necessary. Therefore, autecological studies are warranted. Because

Floodplain vegetation following over 80 years of intensive land use and de-watering : Lower Owens River, California

Creator:: Risso, Derek A.
Abstract:: Riparian areas in the arid western United States are critical ecosystems that have been severely degraded by a variety of land and water uses over the last 100 years. In this study, the composition and structure of floodplain vegetation along the Lower Owens River in eastern California was quantitatively described...
Resource Type:: Masters Thesis
Full Text:: exclosures to restore native plant diversity. A dramatic change in compositional and structural

ScholarsArchive@OSU

Landscape level patterns in biodiversity : plant species and biomass structure

Ecological effects of post-wildfire management activities (salvage-logging and grass-seeding) on vegetation composition, diversity, biomass, and growth and survival of Pinus ponderosa and Purshia tridentata

Ecological effects of spring and fall prescribed burning on basin big sagebrush : Idaho fescue--bluebunch wheatgrass communities

Vegetation composition and response to fire of native Willamette Valley wetland prairies

Hydrology and related soil features of three Willamette Valley wetland prairies

Ecology of woody riparian vegetation in tributaries of the Upper Grande Ronde River basin, Oregon

Soil conditions along a hydrologic gradient and successional dynamics in a grazed and ungrazed montane riparian ecosystem

Interactive influences of wildfire and nonnative species on plant community succession in Hawaii Volcanoes National Park

Ecology of the Salix and Populus species of the Crooked River National Grassland

Floodplain vegetation following over 80 years of intensive land use and de-watering : Lower Owens River, California

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