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Demography of medusahead on two soil types : potential for invasion into intact native communities

Creator:: Miller, Heather C.
Resource Type:: Masters Thesis
Full Text:: Doeseher, Pat Muir, and Steve Davis for reviewing my thesis and giving me ideas for improvement! There

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:: were characterized by significantly higher mean species diversity and richness (H'=3.16, S=36) than

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

Creator:: Harris, Norman Rex
Resource Type:: Masters Thesis
Full Text:: Pasture Production in Open Canopied Agroforests. Abstract approved: Steven H. Sharrow While successful

Economic and social impacts of restoration : a case study of the Great Basin Region

Creator:: Satyal, Vijayanand H.
Abstract:: The last five decades of research in arid land ecology cites Invasive species as a source of imbalances in biodiversity through habitat destruction and reductions of native species through ecosystem alterations in favor of non-native species. Invasive species are known to damage not only the surrounding ecosystem but also cause...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Vijayanand H Satyal for the degree of Doctor of

Disturbance and dynamics of riparian forests in southwestern Oregon

Creator:: Messier, Michael S.
Abstract:: Fire exclusion has been associated with structural and compositional changes in many upland forests of the western United States, but little is known about the impacts on riparian forests, portions of the landscape protected for habitat and water quality. For this study, I characterized the historic disturbance and tree recruitment...
Resource Type:: Masters Thesis
Full Text:: have been well documented (Gast et al., 1991; O'Laughlin et al., 1993; USDA, 1993; Everett et al

Understory vegetation response and nitrogen cycling following cutting of western juniper

Creator:: Bates, Jonathan D.
Abstract:: Since the late 1880's western juniper has expanded in range and increased in density in sagebrush-bunchgrass, riparian, and forested plant communities of the Pacific Northwest. Succession to western juniper woodland has been shown to reduce the productivity and diversity of the understory component, result in concentration of soil nutrients beneath...
Resource Type:: Dissertation
Full Text:: diversity (Blackburn and Tueller, 1970; Everett et al., 1983) and understory seed bank 18 reserves

Spatial and age class analysis of managed western juniper (Juniperus occidentalis) woodlands in central Oregon

Creator:: Zophy, Kelley T.
Abstract:: Juniper is a native species to Oregon and confers ecological benefits to wildlife when it is at savannah and transitional densities. Its range and extent have fluctuated with climatic change, but the current range expansion is unprecedented in its extent. The range expansion has been associated with the degradation of...
Resource Type:: Masters Thesis
Full Text:: range of western juniper growth may be due to a lack of precipitation in those areas (Davis 2004

Fire severity and vegetation response to fire in riparian areas of the Biscuit and B&B Complex Fires, Oregon

Creator:: Halofsky, Jessica E.
Abstract:: Fire is the dominant disturbance process in western U.S. forests, and although effects of fire in upland forests are relatively well-studied, there is little information about fire effects on riparian forests, critical areas of the landscape for both habitat and water quality. This dissertation examines different aspects of fire effects...
Resource Type:: Dissertation
Full Text:: 1981, Segura and Snook 1992, Camp et al. 1997, Agee 1998, Williamson 1999, Everett et al. 2003

Effects of wildfire burn severity on soil microbial communitiesand invasive plant species in the Cascade Range of Oregon

Creator:: Hebel, Cassie L.
Abstract:: Fire suppression in the last several decades has resulted in unprecedented accumulations of organic matter on the landscape, leading to an increase in large, intense wildfires. This study investigated the soil microbial community (using phospholipid fatty acid analysis) across recently burned forests on the eastern slope of the Cascade Range...
Resource Type:: Masters Thesis

Persistence of western juniper resource islands following canopy removal

Creator:: Miwa, Christopher
Abstract:: Western juniper (Juniperus occidentalis) cover has more than doubled within the last century and currently occupies over 9 million acres in the Intermountain West. Encroachment has altered the spatial distribution of soil nutrients and plants in these systems, forming nutrient enriched 'resource islands,' under tree canopies. The purpose of this...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

Demography of medusahead on two soil types : potential for invasion into intact native communities

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

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

Economic and social impacts of restoration : a case study of the Great Basin Region

Disturbance and dynamics of riparian forests in southwestern Oregon

Understory vegetation response and nitrogen cycling following cutting of western juniper

Spatial and age class analysis of managed western juniper (Juniperus occidentalis) woodlands in central Oregon

Fire severity and vegetation response to fire in riparian areas of the Biscuit and B&B Complex Fires, Oregon

Effects of wildfire burn severity on soil microbial communitiesand invasive plant species in the Cascade Range of Oregon

Persistence of western juniper resource islands following canopy removal

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