Index Catalog // ScholarsArchive@OSU

Competitive interactions and resource partitioning between northern spotted owls and barred owls in western Oregon

Creator:: Wiens, J. David
Abstract:: The federally threatened northern spotted owl (Strix occidentalis caurina) is the focus of intensive conservation efforts that have led to much forested land being reserved as habitat for the owl and associated wildlife species throughout the Pacific Northwest of the United States. Recently, however, a relatively new threat to spotted...
Resource Type:: Dissertation
Full Text:: J. David Wiens for the degree of Doctor of Philosophy in Wildlife Science presented on March 2

Distribution, habitat associations, and conservation status of Pacific fisher (Pekania pennanti) in Oregon.

Creator:: Barry, Brent R.
Abstract:: Fishers (Pekania pennanti) are medium sized mustelids endemic to North America. Two fisher populations persist in Oregon: an indigenous population in southwestern Oregon, and a reintroduced population in the southern Cascade Mountains. Despite candidacy for listing under the Endangered Species Act, current information on fisher populations in Oregon is scarce....
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Brent R. Barry

Migrational characteristics and survival rates of mallards banded at Malheur National Wildlife Refuge

Creator:: Furniss, Sean Barry
Abstract:: An analysis of 4,385 recoveries of mallards (Anas platyrhynchos), that were reported during the years 1929 to 1972, was made to determine the migrational characteristics and survival rates of mallards banded at Malheur National Wildlife Refuge in southeastern Oregon. Two populations, a transitory population and a wintering population, were banded...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF SEAN BARRY FURNISS for the degree

Natural-Channel-Design Restorations that Changed Geomorphology Have Little Effect on Macroinvertebrate Communities in Headwater Streams

Creator:: Ernst, Anne G., Warren, Dana R., and Baldigo, Barry P.
Abstract:: Stream restorations that increase geomorphic stability can improve habitat quality, which should benefit selected species and local aquatic ecosystems. This assumption is often used to define primary restoration goals; yet, biological responses to restoration are rarely monitored or evaluated methodically. Macroinvertebrate communities were inventoried at 6 study reaches within 5...
Resource Type:: Article
Full Text:: Headwater Streams Anne G. Ernst,1,2 Dana R. Warren,3 and Barry P. Baldigo1 Abstract Stream restorations

Feasibility of supplementary sampling of the commercial groundfish landings in Oregon using seafood plant workers

Creator:: Builder, Tonya L.
Abstract:: Fishery dependent data--length distributions, sex ratios, maturity schedules, and species composition of landed catches--are necessary for stock assessments. These data are currently collected by state port biologists using a sampling design that randomly selects samples from a small percentage of a very large target population. Sampling programs may need to...
Resource Type:: Masters Thesis
Full Text:: advisor, helped with the formulation of this study and the analysis. Dr. Dawn J. Wright taught me all I

Integrating fleets, markets and ocean dynamics : a bioeconomic analysis of the Oregon ocean shrimp fishery

Creator:: Gallagher, Charmaine Marie
Abstract:: Questions relating to economic performance, biological conservation and variation in resource abundance and harvest of ocean shrimp have led to increasing pressure for management action. Developing effective management policies for this highly variable resource requires a comprehensive understanding of the fishery and marine processes. Important factors in understanding the fishery...
Resource Type:: Dissertation
Full Text:: Abstract approved: Christopher J. Langdon Abstract Questions relating to economic performance

Floodplain vegetation following over 80 years of intensive land use and de-watering : Lower Owens River, California

Creator:: Risso, Derek A.
Abstract:: Riparian areas in the arid western United States are critical ecosystems that have been severely degraded by a variety of land and water uses over the last 100 years. In this study, the composition and structure of floodplain vegetation along the Lower Owens River in eastern California was quantitatively described...
Resource Type:: Masters Thesis
Full Text:: : _________________________________________________ J. Boone Kauffman Riparian areas in the arid western United States are critical ecosystems

Early development of the endocrine system in salmonids : regulation of sex differentiation and ontogeny of the stress response

Creator:: Floyd, Donald J.
Abstract:: Sex steroids, follicle stimulating hormone (FSH), luteinizing hormone (LH) and gonadotropin releasing hormone (GnRH) were measured in monosex and mixed sex populations of rainbow trout during early development. Steroids declined following fertilization, increased at hatch, then fell and remained constant thereafter. Trends toward differences in steroids between males and females...
Resource Type:: Dissertation
Full Text:: (de Jesus et al., 1991; de Jesus and Hirano, 1992; Hwang, P.P. et al., 1992; Barry et al., 1995a

Mark-recapture estimates of population parameters for selected species of small mammals

Creator:: Hammond, Ellen L.
Abstract:: I used program CAPTURE to analyze 1,535 data sets for 33 North American species of small mammals for sources of variation in capture probabilities and to characterize species-specific responses to markrecapture trapping. CAPTURE incorporates seven models to account for all possible combinations of heterogeneity (h), behavioral response (b), and time...
Resource Type:: Masters Thesis
Full Text:: , Dr. B. J. Verts, Professor of Fisheries and Wildlife, and Dr. Fred L. Ramsey, Professor of

Habitat use and movement behavior of Pacific marten (Martes caurina) in response to forest management practices in Lassen National Forest, California

Creator:: Moriarty, Katie M.
Abstract:: Some of the most pressing conservation concerns involve declining populations of species with low fecundity and highly specialized foraging and reproductive requirements. Yet, we often lack a functional understanding of how individuals of those species interact with their environment, specifically how their movement is affected by human-induced changes. In order...
Resource Type:: Dissertation
Full Text:: Tweedy, Brent Barry, Bryce Peterson, David Hamilton, Connor Wood, Minh Dao, Ryan Adamczyk, Katie

ScholarsArchive@OSU

Competitive interactions and resource partitioning between northern spotted owls and barred owls in western Oregon

Distribution, habitat associations, and conservation status of Pacific fisher (Pekania pennanti) in Oregon.

Migrational characteristics and survival rates of mallards banded at Malheur National Wildlife Refuge

Natural-Channel-Design Restorations that Changed Geomorphology Have Little Effect on Macroinvertebrate Communities in Headwater Streams

Feasibility of supplementary sampling of the commercial groundfish landings in Oregon using seafood plant workers

Integrating fleets, markets and ocean dynamics : a bioeconomic analysis of the Oregon ocean shrimp fishery

Floodplain vegetation following over 80 years of intensive land use and de-watering : Lower Owens River, California

Early development of the endocrine system in salmonids : regulation of sex differentiation and ontogeny of the stress response

Mark-recapture estimates of population parameters for selected species of small mammals

Habitat use and movement behavior of Pacific marten (Martes caurina) in response to forest management practices in Lassen National Forest, California

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