Index Catalog // ScholarsArchive@OSU

Small broomrape (Orobanche minor) management using wheat (Triticum aestivum) as a false host

Creator:: Al-thahabi, Salam A.
Abstract:: Small broomrape (Orobanche minor) is an obligate, chlorophyll-lacking parasite that parasitizes red clover (Trifolium pratense) roots. This study was conducted to develop and implement an integrated, biologically based control program for small broomrape by using wheat as a false host to reduce the soil seed bank. The relationship between temperature...
Resource Type:: Dissertation
Full Text:: early stages of development. A study investigated the number of winter wheat rotation life cycles (WRC

An evaluation of biological control of Linaria dalmatica with Mecinus janthinus in Oregon

Creator:: Park, Alexander
Abstract:: Dalmatian toadflax (Linaria dalmatica) has become a prolific invasive plant of rangelands in Oregon since its arrival in the early 20th century. In 2001, the Oregon Department of Agriculture initiated a release program promoting the distribution of the stem-boring weevil, Mecinus janthinus as classical biological control agent to reduce densities...
Resource Type:: Masters Thesis
Full Text:: An Evaluation of Biological Control of Linaria dalmatica with

Modeling slope stability uncertainty : a case study at the Andrews Experimental Forest

Creator:: Murillo, Michelle L.
Abstract:: A simple debris-slide model, employing a digital elevation model (DEM) and geological data, was used in a geographic information system (GIS) to map slope stability in the Andrews Experimental Forest, located in the western Cascade Range in Oregon, USA. To evaluate the contribution of error in elevation to the uncertainty...
Resource Type:: Masters Thesis
Full Text:: im- portance of this study and for never giving up on the possibility we might actually get it

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:: Bio-Economic Studies There exists an abundance of literature on optimizing the rate of weed control

Effects of prescribed fire on Wyoming big sagebrush communities : implications for ecological restoration of sage grouse habitat

Creator:: Wrobleski, David W.
Resource Type:: Masters Thesis
Full Text:: after fire in 1998. In this study the effects of prescribed fire on shrub, grass, and forb composition

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
Full Text:: ................................................. 60 2.6: Regression of soil % C on microbial biomass (PLFA)…………………………..61 2.7: AM fungal root

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:: aspects of the study and offer helpful suggestions. While I learned much on my own I believe my ability

The effects of defoliation on Bromus tectorum seed production and growth

Creator:: Mayer, Kara Hempy
Abstract:: Cheatgrass (Bromus tectorum L.) is a widespread exotic weed in the Intermountain sagebrush steppe. An annual grass, it is highly prolific and very competitive with native perennial grass seedlings. A clipping experiment carried out at two cheatgrass-dominated sites (Lincoln Bench and Succor Creek) in eastern Oregon analyzed effects of defoliation...
Resource Type:: Masters Thesis
Full Text:: considered the potential of defoliation as a cheatgrass control method. Treatments involved hand clipping

Role of propagule pressure and priority effects on plant establishment during restoration of invaded shrub-steppe

Creator:: Schantz, Merilynn C.
Abstract:: Biological plant invasions are diminishing the ecological integrity and function of ecosystems worldwide. A primary example of this is in the Great Basin of the United States, where invasive annual grasses, like cheatgrass (Bromus tectorum L.) and medusahead (Taeniatherum caput-medusae L. Nevski), are dominating many sagebrush-steppe ecosystems. In these invaded...
Resource Type:: Dissertation
Full Text:: can control recruitment of newly arriving species by influencing safe site occupation. The overall

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:: =0.91) LIST OF TABLES Table Page II.1. Summary of study sites and pre-fire forest structure 15

ScholarsArchive@OSU

Small broomrape (Orobanche minor) management using wheat (Triticum aestivum) as a false host

An evaluation of biological control of Linaria dalmatica with Mecinus janthinus in Oregon

Modeling slope stability uncertainty : a case study at the Andrews Experimental Forest

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

Effects of prescribed fire on Wyoming big sagebrush communities : implications for ecological restoration of sage grouse habitat

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

Understory vegetation response and nitrogen cycling following cutting of western juniper

The effects of defoliation on Bromus tectorum seed production and growth

Role of propagule pressure and priority effects on plant establishment during restoration of invaded shrub-steppe

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

Limit your search

Academic Affiliation

Advisor

Commencement Year

Committee Member

Creator

Date

Decade

Degree Field

Degree Level

Degree Name

File Format

Language

License

Location

Non-Academic Affiliation

Peer Reviewed

Resource Type

Rights Statement

Subject

Search Constraints

Search Results

Limit your search