Index Catalog // ScholarsArchive@OSU

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:: selected species of small mammals AN ABSTRACT OF THE THESIS OF Ellen L. Hammond for the degree of Master

Nesting ecology of mallards in the Willamette Valley of Oregon

Creator:: Rickerson, Eric V.
Abstract:: Although widely studied in many portions of North America, little is known about the specific habitat requirements of mallard ducks (Anas platyrhynchos) during the breeding season in western Oregon. I radio-marked 72 female mallards in the Willamette Valley of Oregon in March-April 1995-96 to document wetland habitat selection during pre-nesting...
Resource Type:: Masters Thesis
Full Text:: completion. First, I wish to thank my advisor Dr. Robert L. Jarvis whose guidance and incredible patience

Ecology of breeding mallards : nest parasitism; brood survival; and habitat utilization

Creator:: Talent, Larry Gene
Abstract:: In 1976 and 1977 I examined three broad problems associated with the recruitment of young mallards, Anas platyrhynchos, in the Prairie Pothole Region of North Dakota. The three problems studied were: the effects of interspecific nest parasitism on production; the chronology and magnitude of total-brood loss during the brood-rearing period;...
Resource Type:: Dissertation
Full Text:: committee members, Robert L. Jarvis, Charles E. Warren, Paul L. Farber, and Frank L. Moore, for their

Breeding habitat of harlequin ducks in Prince William Sound, Alaska

Creator:: Crowley, David W.
Abstract:: Breeding habitat of Harlequin ducks (Histrionicus histrionicus) was studied in eastern Prince William Sound, Alaska, during 1991 - 1993. Streams in Prince William Sound were surveyed for Harlequin ducks and monitored with mist nets. Physical characteristics of 24 Harlequin breeding streams were compared to those of 24 streams not used...
Resource Type:: Masters Thesis
Full Text:: William cund, Alask Abstract approved: (Robert L. Jary s, . of Wildlife Ecology) Breeding habitat of

Habitat use, movements, and behavior of postbreeding female canvasbacks in Manitoba

Creator:: Devries, James H.
Abstract:: The habitat use, movements, and behavioral energetics of unsuccessfully breeding female canvasbacks (Aythya valisineria) were examined during the preflightless period in southern Manitoba during 1989-90. Following breeding attempts, unsuccessful females generally expanded their home range on the breeding area, remained there for up to one month, preferentially used large semipermanent...
Resource Type:: Masters Thesis
Full Text:: approved: Dr.' ert L. Jarvis The habitat use, movements, and behavioral energetics of unsuccessfully

The energetics of migration and reproduction of dusky Canada geese (Branta canadensis occidentalis)

Creator:: Bromley, Robert G. H.
Abstract:: Adult female Dusky Canada Geese were studied on the Copper River Delta, Alaska and in the Willamette Valley, Oregon during April through July, 1977 to 1979. Objectives of the research were to: 1) determine the chronology of use of protein and energy reserves in relation to four periods of reproduction...
Resource Type:: Dissertation
Full Text:: Robert L. Jjrvis Adult female Dusky Canada Geese were studied on the Copper River Delta, Alaska and in

Direct and indirect effects of livestock grazing intensity on processes regulating grassland bird populations

Creator:: Johnson, Tracey N.
Abstract:: In grasslands, grazing by large ungulates can influence vegetation structure, composition, primary productivity, and ultimately, ecosystem functioning. While grazing represents a complex disturbance, grazing intensity largely determines the effects of grazing on vegetation. Structural and compositional changes in the plant community caused by grazing could have bottom-up effects on species...
Resource Type:: Dissertation
Full Text:: : _____________________________________________________________________ Patricia L. Kennedy In grasslands, grazing by large ungulates can influence vegetation

Factors influencing nest success of greater sandhill cranes at Malheur National Wildlife Refuge, Oregon

Creator:: Ivey, Gary L.
Abstract:: I developed a priori hypotheses and used logistic regression to model Greater Sandhill Crane (Grus canadensis tabida) nest success in relation to weather, habitat and management variables for cranes breeding at Malheur National Wildlife Refuge (MNWR) in southeast Oregon. My primary interest was to investigate the effects of habitat conditions...
Resource Type:: Masters Thesis
Full Text:: OF Gary L. Ivey for the degree of Master of Science in Wildlife Science presented on February 20

Amphibian communities and climate change : Where ecological processes meet evolutionary interactions

Creator:: Thurman, Lindsey L.
Abstract:: Forecasts of the impacts of climate change have traditionally focused on individual species and their phenotypes, phenology, or distribution. However, shifts in species distributions and the resulting reorganization of community composition represent an important violation to the assumption of species acting in isolation. Whereas species may respond individualistically to climate...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Lindsey L

Photo-identification of Melon-headed Whales (Peponocephala electra) in the Marquesas Islands : Creation of the First Photo-identification Catalog and Estimation of Group Size and Minimum Abundance in a Remote Archipelago

Creator:: McClung, John Ralph, II
Abstract:: For many species of oceanic dolphins, photo-identification and genetic data indicate that these island-associated populations are demographically isolated from pelagic populations and that island-associated populations exhibit very different patterns of movement and habitat use. Melon-headed whales (Peponocephala electra) are generally considered a pelagic dolphin, but have been documented around oceanic...
Resource Type:: Masters Thesis

Spatial Association of Humpback Whales (Megaptera novaeangliae) and their Prey in the Southern Gulf of Maine, USA

Creator:: Kirchner, Theresa
Abstract:: Efficient foraging strategies result in a predator spatially overlapping with its prey, foraging in the most profitable patches, and minimizing the time transiting between patches. Previous studies investigating baleen whale foraging strategies have generally focused on investigating spatial overlap with prey patches, patch profitability or movement within feeding grounds. The...
Resource Type:: Masters Thesis
Full Text:: regarding their efficiency. 10 References Allen, J., Weinrich, M., Hoppitt, W., Rendell, L

Habitat use, spatial ecology, and stable isotope variability of the Pacific harbor seal (Phoca vitulina richardii) along the Oregon coast

Creator:: Steingass, Sheanna M.
Abstract:: Pacific harbor seals (Phoca vitulina richardii) are one of Oregon’s most common coastal predators, numbering between 10,000 and 12,000 individuals (Brown et al. 2005b). They consume more than 149 species or types of marine prey within the Pacific Northwest, which include a large variety of commercially important fisheries species. Despite...
Resource Type:: Dissertation
Full Text:: , California. Mar Mammal Sci. 28:237–253. doi:10.1111/j.1748-7692.2011.00480.x. Beaumont NJ, Jones L

California condors in the Pacific Northwest : integrating history, molecular ecology, and spatial modeling for reintroduction planning

Creator:: D'Elia, Jesse
Abstract:: Reintroduction programs are increasingly being used to save animals from extinction and aid in their recovery. The California Condor (Gymnogyps californianus), one of the most endangered birds in the world, is a remarkable example of how reintroduction programs can help rapidly increase a species' population numbers and range following a...
Resource Type:: Dissertation

Landscape-Level Approaches to Desert Bighorn Sheep (Ovis canadensis nelsoni) Conservation in a Changing Environment

Creator:: Creech, Tyler G.
Abstract:: Landscape characteristics can strongly influence demographic and genetic processes in wildlife populations. Climate change and human land use are causing many landscapes to change rapidly, and the effects on wildlife populations must be understood to properly manage these threats and design effective conservation strategies. In this dissertation, I explored the...
Resource Type:: Dissertation
Full Text:: previous projects. Erin L. Landguth assisted with genetic simulations and manuscript edits for Chapter 3

Influences of high severity fire and postfire logging on avian and small mammal communities of the Siskiyou Mountains, Oregon, USA

Creator:: Fontaine, Joseph B.
Abstract:: High severity fire is a historical and integral disturbance process in coniferous forest types. Compounded disturbances such as multiple fires or post-disturbance management activities are increasingly common, but ecological responses are not well understood and may represent novel types of disturbances. I studied bird and small mammal communities in the...
Resource Type:: Dissertation

Factors affecting colony size, reproductive success, and foraging patterns of double-crested cormorants nesting on East Sand Island in the Columbia River Estuary

Creator:: Anderson, Cynthia D.
Abstract:: The purpose of this study was to investigate the primary factors affecting colony size, reproductive success, and foraging patterns of Double-crested Cormorants (Phalacrocorax auritus albociliatus) nesting at East Sand Island in the Columbia River estuary, the largest colony of this species on the Pacific Coast of North America. This colony...
Resource Type:: Masters Thesis
Full Text:: - winged/Western Gulls (Larus glaucescens X L. occidentalis) following disturbances caused by Bald Eagles

Bird and rodent nesting in excavated cavities in Pinon-juniper woodland, southeastern Colorado

Creator:: Youkey, Donald E.
Abstract:: I studied bird and rodent nesting in woodpecker-excavated cavities in pifion-juniper (Pinus edulis-Juniperus monosperma) (P-J) woodland in southeastern Colorado during the spring and summer of 1987 and 1988. Two related investigations were conducted: one described characteristics of habitat used by birds and rodents nesting in woodpecker-excavated cavities and the other...
Resource Type:: Masters Thesis
Full Text:: . I also thank fellow graduate student and friend, Ellen Hammond, for many useful suggestions on a

Characteristics of northern flying squirrel and Townsend's chipmunk populations in second -and old-growth forests

Creator:: Rosenberg, Daniel K.
Resource Type:: Masters Thesis
Full Text:: Deimling helped enormously with data entry. Ellen Hammond taught me all I ever wanted to know about program

Butterfly and flower community composition among prairie-oak ecosystem habitats in the Willamette Valley, Oregon

Creator:: Powers, Breanna F.
Abstract:: Prairie-oak ecosystems in the Willamette Valley, Oregon have experienced habitat loss and degradation; most of these ecosystems are fragmented into smaller patches. Prairie-oak butterfly species, in the Willamette Valley, have decreased dramatically due to loss or degradation of habitat. More research is needed on sustaining the populations of butterflies in...
Resource Type:: Masters Thesis
Full Text:: Lynda Boyer at Jefferson Farm. Thanks to Paul Hammond for his butterfly expertise, and Bruce McCune

Spatio-temporal Patterns and Ecological Drivers of Harbor Porpoise (Phocoena phocoena) off the Central Oregon Coast, USA

Creator:: Holdman, Amanda
Abstract:: The marine environment is under increasing pressure from human activities worldwide, particularly in coastal waters, creating a need to better understand fine-scale distributions of highly mobile species that occur in the area, as they are frequently most threatened. Harbor porpoise (Phocoena phocoena) occur frequently in Oregon’s nearshore habitat, but due...
Resource Type:: Masters Thesis
Full Text:: population and distribution (Thompson et al. 2000, Cañadas & Hammond 2006). Marine ecosystems are dynamic

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