Index Catalog // ScholarsArchive@OSU

Interception and water holding capacity of western juniper

Creator:: Larsen, Royce E.
Resource Type:: Dissertation

Community structure of old-growth Juniperus occidentalis woodlands

Creator:: Waichler, Wendy Sims
Abstract:: Knowledge of old-growth Juniperus occidentalis woodlands, which occur in central and eastern Oregon, is limited. Wise management of these woodlands necessitates a better understanding of the community ecology. The community structure of woodlands at seven sites in three areas of central Oregon was studied. Measurements taken at nine plots per...
Resource Type:: Masters Thesis
Full Text:: the pinion-juniper old 61 growth criteria 18 Old-growth definitions for another central Oregon

Western juniper : its impact and management in Oregon rangelands

Creator:: Bedell, Thomas E., Eddleman, L. E., Deboodt, Timothy L., Jacks, C., and Oregon State University. Extension Service
Abstract:: This publication acquaints you with the biology and ecology of western juniper and how the tree affects the landscapes it occupies.
Resource Type:: Technical Report
Full Text:: Western Juniper: Its Impact and Management in Oregon

Western juniper encroachment into aspen communities in the Northwest Great Basin

Creator:: Wall, Travis G.
Abstract:: In the Northwest Great Basin, aspen (Populus tremuloides) communities uniquely contribute to the biodiversity of a semi-arid, sagebrush-dominated landscape. In this same region, western juniper (Juniperus occidentalis) is encroaching into aspen stands. This study determined the timing, extent, and some of the effects of this expansion. Aspen stands below 2,133...
Resource Type:: Masters Thesis
Full Text:: western juniper (subspecies occidentalis). On Steens Mountain in eastern Oregon, Miller and Rose 1995

Spatial and temporal distributions of western juniper in John Day Fossil Beds National Monument, Oregon

Creator:: Chen, Ya-Chian
Abstract:: Post-settlement juniper expansion in the western states has been reported for decades, including western juniper (Juniperus occidentalis Hook ssp. occidentalis) woodlands in the northwestern states. A 15 km2 study area in the Sheep Rock Unit of John Day Fossil Beds National Monument in eastern Oregon was selected to study spatial...
Resource Type:: Masters Thesis

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:: Mountain, Oregon. Cutting of western juniper reduced below-ground competition for water and N

The ecological consequences of the reduction of species diversity : experimental approaches

Creator:: Allison, Gary William
Abstract:: The influence of loss of diversity on community dynamics and ecosystem functioning has recently received considerable attention. Although study of biodiversity has a long history within ecology, empirical investigations exploring consequences of loss have been rare. Because many factors confound diversity comparisons, experimental manipulations of diversity offer the most direct...
Resource Type:: Dissertation
Full Text:: ecology, empirical investigations exploring consequences of loss have been rare. Because many factors

Coarse woody debris in streams of the Drift Creek Basin, Oregon

Creator:: Veldhuisen, Curt N.
Abstract:: This study examined the occurrence of coarse woody debris (i.e., pieces greater than 0.15 m in diameter and 2.0 m in length) in first- through fifth-order streams located within the Drift Creek Basin of the Oregon Coast Range. Nine "tributary reaches" were surveyed to determine how three land management treatments...
Resource Type:: Masters Thesis

Abundance and community composition of arboreal spiders : the relative importance of habitat structure, prey availability and competition

Creator:: Halaj, Juraj
Abstract:: This work examined the importance of structural complexity of habitat, availability of prey, and competition with ants as factors influencing the abundance and community composition of arboreal spiders in western Oregon. In 1993, I compared the spider communities of several host-tree species which have different branch structure. I also assessed...
Resource Type:: Dissertation
Full Text:: western Oregon. In 1993, I compared the spider communities of several host-tree species which have

The ecology of Devil's club (Oplopanax horridum (J.E. Smith) Miq.) in western Oregon

Creator:: Roorbach, Ashley H.
Abstract:: Devil's club (Oplopanax horridum (J. E. Smith) Miq.) is an indigenous shrub of the Pacific Northwest, often found in the Tsuga heterophylla (western hemlock)/Devil' s club association in western Oregon. In the same family as ginseng, Devil's club is gaining attention for its medicinal properties. While traditional uses of Devil's...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

Interception and water holding capacity of western juniper

Community structure of old-growth Juniperus occidentalis woodlands

Western juniper : its impact and management in Oregon rangelands

Western juniper encroachment into aspen communities in the Northwest Great Basin

Spatial and temporal distributions of western juniper in John Day Fossil Beds National Monument, Oregon

Understory vegetation response and nitrogen cycling following cutting of western juniper

The ecological consequences of the reduction of species diversity : experimental approaches

Coarse woody debris in streams of the Drift Creek Basin, Oregon

Abundance and community composition of arboreal spiders : the relative importance of habitat structure, prey availability and competition

The ecology of Devil's club (Oplopanax horridum (J.E. Smith) Miq.) in western Oregon

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