Index Catalog // ScholarsArchive@OSU

Range-wide abundance and fluctuating asymmetry patterns of sagebrush-obligate passerine birds

Creator:: Krissman, Cortnie M.
Abstract:: North American sagebrush (Artemisia spp.) ecosystems are suffering from reductions in habitat extent and quality. Only about 50% of sagebrush remains from pre-settlement conditions, and much of the remaining habitat is fragmented or degraded by invasive species, fire suppression and overgrazing. Sagebrush-obligate species are experiencing population declines as a result...
Resource Type:: Masters Thesis
Full Text:: Cortnie M. Krissman for the degree of Master of Science in Wildlife Science presented on December 15

Riparian vegetation and larval Pacific Giant (Dicamptodon tenebrosus) and adult Western Redback (Plethodon vehiculum) salamanders in the Oregon Coast Range

Creator:: Graff, Paula (Paula Hayes)
Abstract:: Riparian areas in the Pacific Northwest provide important biotic and abiotic features, such as down wood, moist microsites, and abundant invertebrate prey that benefit aquatic and terrestrial amphibians. Reported high densities of amphibians from streams and riparian areas in the Pacific Northwest highlight their importance in riparian food webs. Amphibians...
Resource Type:: Masters Thesis
Full Text:: W. Daniel Edge Riparian areas in the Pacific Northwest provide important biotic and

Validating songbird habitat relationship models

Creator:: Wilson, Dorothy G.
Abstract:: Models are commonly used to assess and predict wildlife response to management practices. Model validation is essential if managers are to use them with confidence. Fifteen forest bird-habitat relationship models were developed by biologists using data collected from private forestland in southwest Washington. These models predict species' probability of occurring...
Resource Type:: Masters Thesis
Full Text:: Songbird Habitat Relationship Models. Abstract approved: W. Daniel Edgt, Models are commonly used to

Impacts of forest-to-agriculture conversion on aboveground and soil carbon and nitrogen stocks along a bioclimatic gradient in Costa Rica

Creator:: Jobse, Judith C.
Abstract:: Tropical forest-to-agriculture conversions contribute to ~20% of contemporary global C emissions. Current global C flux estimates assume C is lost from vegetation and soils over time due to this conversion, and that C stocks in agricultural lands are fairly uniform across the tropics. Global C stock and flux estimates may...
Resource Type:: Dissertation
Full Text:: : W. Daniel Edge Mark E. Harmon Tropical forest-to-agriculture conversions contribute to ~20

Conservation and spatial use analyses for the recovery of bighorn sheep in the Peninsular Ranges

Creator:: Ostermann, Stacey D.
Abstract:: The status of wild sheep in North America typifies the plight of many wildlife species in modern times: wild sheep have declined to 10-40% of their numbers during pristine times and on a global scale approximately 31% of Caprine are considered threatened or critical. As human populations and the number...
Resource Type:: Masters Thesis
Full Text:: -m buffer. The response variable was use (0 random points, I = bighorn sheep locations

Environmental correlates of parasitism in introduced threespine stickleback (Gasterosteus aculeatus) in the Upper Deschutes River Basin, Oregon

Creator:: Koketsu, Wataru
Abstract:: The Pseudophyllidean tapeworm, Schistocephalus solidus, is a parasite that requires both copepods and fish, mainly the threespine stickleback (Gasterosteus aculeatus) as intermediate hosts, and birds as its final host to complete its life cycle. A rapid increase in the abundance of both the non-native stickleback and the tapeworm in the...
Resource Type:: Masters Thesis
Full Text:: , Oregon Abstract Approved: W. Daniel Edge The Pseudophyllidean tapeworm, Schistocephalus solidus, is a

Small mammal responses to silvicultural fuels treatments in southwest Oregon

Creator:: Manning, Jeffrey A.
Abstract:: Despite the belief that fuels management, a form of prescribed fire that reduces accumulated fuels in commercially thinned forests, is necessary to restore forest 'health' in the Pacific Northwest, its effects on wildlife has received little attention in the scientific literature. Because fuels management is supported, funded, and implemented nationwide...
Resource Type:: Masters Thesis
Full Text:: Responses to Silvicultural Fuels Treatments in Southwest Oregon. Abstract approved: W. Daniel Edge Despite

Effects of livestock grazing and small mammal populations on endangered Bradshaw's desert parsley (Lomatium bradshawii) at Oak Creek, Willamette Valley, Oregon

Creator:: Drew, Aaron D.
Abstract:: I evaluated the response of the federally listed endangered plant species Bradshaw's desert parsley (Lomatium bradshawii) to livestock grazing and small mammal depredation at Oak Creek, Linn County, Oregon, 1997-1998. I established six study blocks (three each in wooded and herbaceous pastures) with plots in each block randomly assigned to...
Resource Type:: Masters Thesis
Full Text:: Creek. Willamette Valley. Oregon. Abstract approved: W. Daniel I evaluated the response of the

Integrative risk analysis of vector-borne disease

Creator:: Orme Zavaleta, Jennifer
Abstract:: In this dissertation I explore the application of two novel modeling techniques for improving risk analysis of vector-borne disease and discuss their potential use in integrating environmental risk assessment that guides environmental and public health decisions. Techniques for analyzing risk have been considered inadequate due to a lack of understanding...
Resource Type:: Dissertation
Full Text:: Risk Analysis of Vector-Borne Disease Abstract W. Daniel Edge In this dissertation I explore the

Improving ecological risk assessment of pesticides for nontarget terrestrial vertebrates

Creator:: Wang, Guiming
Abstract:: The Quotient Method (QM) is used by the United States Environmental Protection Agency (USEPA) in ecological risk assessments of pesticides for nontarget organisms. The QM requires several assumptions regarding exposure and hazards of pesticides to wildlife; several of these assumptions have not been tested. During 1997-99, I conducted three experiments...
Resource Type:: Dissertation
Full Text:: - W. Daniel Edge The Quotient Method (QM) is used by the United States Environmental Protection

ScholarsArchive@OSU

Range-wide abundance and fluctuating asymmetry patterns of sagebrush-obligate passerine birds

Riparian vegetation and larval Pacific Giant (Dicamptodon tenebrosus) and adult Western Redback (Plethodon vehiculum) salamanders in the Oregon Coast Range

Validating songbird habitat relationship models

Impacts of forest-to-agriculture conversion on aboveground and soil carbon and nitrogen stocks along a bioclimatic gradient in Costa Rica

Conservation and spatial use analyses for the recovery of bighorn sheep in the Peninsular Ranges

Environmental correlates of parasitism in introduced threespine stickleback (Gasterosteus aculeatus) in the Upper Deschutes River Basin, Oregon

Small mammal responses to silvicultural fuels treatments in southwest Oregon

Effects of livestock grazing and small mammal populations on endangered Bradshaw's desert parsley (Lomatium bradshawii) at Oak Creek, Willamette Valley, Oregon

Integrative risk analysis of vector-borne disease

Improving ecological risk assessment of pesticides for nontarget terrestrial vertebrates

Limit your search

Academic Affiliation

Advisor

Commencement Year

Committee Member

Creator

Date

Decade

Degree Field

Degree Level

Degree Name

File Format

Language

License

Non-Academic Affiliation

Peer Reviewed

Resource Type

Rights Statement

Subject

Search Constraints

Search Results

Limit your search