Index Catalog // ScholarsArchive@OSU

Fire effects on vegetation diversity, structure, and successional dynamics in shrub-steppe and mixed conifer environments of the Hells Canyon, Idaho

Creator:: Havlina, Douglas William
Abstract:: The effects of fire severity on post-fire succession and shrub demography were quantified in shrub-steppe grasslands and subalpine forests in the Hells Canyon of the Payette National Forest, Idaho. Following the 1988 Eagle Bar Fire, species frequency, community diversity, fire adaptations, and stand ages were quantified at 12 plots in...
Resource Type:: Masters Thesis
Full Text:: MIXED CONIFER ENVIRONMENTS OF THE HELLS CANYON, IDAHO by Douglas William Havlina A THESIS submitted

Growth characteristics and site potentials of perennial grass species

Creator:: Borman, Michael M.
Abstract:: In this study I assessed the potentials of selected, established perennial grasses to maintain site occupancy in the foothills ecosystem of the Rogue River Valley of southwest Oregon which is currently dominated by a variety of annual plants. The first evaluation compared growth curves of the perennial grasses and contrasted...
Resource Type:: Dissertation
Full Text:: Potentials of Perennial Grass Species. Abstract approved: Redacted for Privacy William C.Ikruedbr In this

Growth responses of Douglas-fir (Pseudotsuga menziesii [Mirb.] Franco) to defoliation

Creator:: Osman, Khalid Amir
Abstract:: The effect of defoliation intensity and season on Douglas-fir growth were studied in three replications in the Siuslaw National Forest during 1988-1990. Four intensities of defoliation were applied once in either spring or summer 1988. Stem diameter and canopy area were linearly inversely proportional to the level of defoliation. Defoliation...
Resource Type:: Dissertation
Full Text:: Growth responses of Douglas-fir (Pseudotsuga menziesii

Quaking aspen persistence in three Oregon landscapes

Creator:: Seager, S. Trent
Abstract:: Quaking aspen (Populus tremuloides) is an important tree species in the western United States and there has been much concern about its persistence. In this thesis, I report on aspen in a portion of its range that has not been previously evaluated: the eastern and western slopes of the Central...
Resource Type:: Masters Thesis
Full Text:: : _________________________________________________________________ William J. Ripple Quaking aspen (Populus tremuloides) is an important tree species

Intercropping trees in a vegetable production systems : a holistic inquiry

Creator:: Seiter, Stefan
Resource Type:: Dissertation
Full Text:: Vegetable Production System: A Holistic Inciuiry. Abstract approved D. William Red alder (Alnus rubra) and

Spatial patterns of tree effects on pasture production in open canopied agroforests

Creator:: Harris, Norman Rex
Resource Type:: Masters Thesis
Full Text:: . William Krueger for the support he gave my program and for the "pep talks" that got me through the

Restructuring of land and community in the remote rural west : the case of Wallowa County, Oregon

Creator:: Abrams, Jesse
Abstract:: Since at least the 1970s, rural areas in the western United States, as elsewhere across the country and world, have been subject to social, economic, and political forces that have resulted in novel demographic and land tenure trends when compared to previous decades. Collectively, these processes of restructuring have created...
Resource Type:: Dissertation
Full Text:: (Picea engelmannii), Douglas-fir (Pseudotsuga menziesii), lodgepole pine 9 (Pinus contorta) and

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:: , William Paul Pendergrass, to the spirit of my loyal dog-companion, Mocha, and to all the positive forces

Traditional ecological knowledge to develop and maintain fire regimes in northwestern California, Klamath-Siskiyou bioregion : management and restoration of culturally significant habitats

Creator:: Lake, Frank K.
Abstract:: The use of Native American fire regimes evolved in the Klamath-Siskiyou bioregion over millennia. A mixture of Native American and Euro-American socio-cultural management has developed from adaptations to climate, topography, ecological processes, and land use practices. This research incorporates Traditional Ecological Knowledge (TEK) to partially examine the role of tribal...
Resource Type:: Dissertation

A characterization of seasonal pools in Central Oregon's high desert

Creator:: Dlugolecki, Laura
Abstract:: Seasonal wetlands in arid and semi-arid lands provide an important source of surface water in otherwise dry lands. Central Oregon's high desert, located in the Northern Great Basin (NGB) is dotted with hundreds of seasonal pools, locally called playas. The playas hold water or snow during parts of winter and...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

Fire effects on vegetation diversity, structure, and successional dynamics in shrub-steppe and mixed conifer environments of the Hells Canyon, Idaho

Growth characteristics and site potentials of perennial grass species

Growth responses of Douglas-fir (Pseudotsuga menziesii [Mirb.] Franco) to defoliation

Quaking aspen persistence in three Oregon landscapes

Intercropping trees in a vegetable production systems : a holistic inquiry

Spatial patterns of tree effects on pasture production in open canopied agroforests

Restructuring of land and community in the remote rural west : the case of Wallowa County, Oregon

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

Traditional ecological knowledge to develop and maintain fire regimes in northwestern California, Klamath-Siskiyou bioregion : management and restoration of culturally significant habitats

A characterization of seasonal pools in Central Oregon's high desert

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