Index Catalog // ScholarsArchive@OSU

Small mammal and bird abundance in relation to post-fire habitat succession in mountain big sagebrush (Artemisia tridentata ssp. vaseyana) communities

Creator:: Holmes, Aaron L.
Abstract:: Fire is an important disturbance mechanism in big sagebrush (Artemisia tridentata) communities, yet little is known about wildlife population dynamics during post-fire habitat succession. I estimated the abundance of small mammals and birds in relation to fire history in mountain big sagebrush (A.t. spp. vaseyana) communities on the Sheldon National...
Resource Type:: Dissertation
Full Text:: Robin (Turdus migratorius), and Brown-headed Cowbird (Molothus ater) occurred at lower densities in

Breeding bird community composition in relation to riparian vegetation structure in grazed habitats

Creator:: Sanders, Todd Alan
Abstract:: Riparian zones provide habitat for breeding birds in the semiarid western United States; however, there are few data available that address the effects of livestock grazing strategies on riparian habitats and avian communities. Documenting avian community composition in different riparian vegetation communities and relating vegetation communities to livestock grazing strategies...
Resource Type:: Masters Thesis
Full Text:: robin [Turdus migratorius], common snipe [Gallinago gallinago], bobolink [Dolichonyx oryzivorus], and

Modeling Fine-scale Avian Distributions and Densities with Multi-scale Models: Predicting the Past and Present

Creator:: Hallman, Tyler A.
Abstract:: Models of a species’ distribution and models of a species’ spatially explicit density are valuable tools for conservation. They allow researchers to estimate changes in distributions, densities, and populations, based on changing environmental conditions. To trust such estimates, however, the quality of models is exceedingly important. Model performance can be...
Resource Type:: Dissertation

Conserving avian diversity in agricultural systems : the role of isolated Oregon white oak legacy trees

Creator:: DeMars, Craig A.
Abstract:: Over one third of the earth’s land surface has been modified to some extent for agricultural purposes. The large global footprint of agriculture, combined with the knowledge that existing reserve networks are likely insufficient for long-term conservation of native biodiversity, has necessitated that agricultural systems contribute to conservation of native...
Resource Type:: Masters Thesis
Full Text:: wild rose (Rosa spp). 7 Willamette Valley Eugene Salem Portland California Washington

Avian communities in relation to habitat influenced by fire in a sagebrush steppe landscape

Creator:: Noson, Anna C.
Abstract:: Fire suppression in high-elevation sagebrush steppe over the last century has profoundly influenced the structure and complexity of vegetation communities. Although fire is the primary management tool used to restore these areas, the impact of this management practice on associated avian communities is poorly understood. We examined patterns of habitat...
Resource Type:: Masters Thesis
Full Text:: Tisdale 1976, Miller et al. 1994, Bartos and Campbell 1998, Miller and Rose 1999). Furthermore, landscape

Riparian bird communities in Portland, Oregon : habitat, urbanization, and spatial scale patterns

Creator:: Hennings, Lori A.
Abstract:: Urban ecosystems are characterized by human disturbance and changes in the amount, types, and spatial arrangement of wildlife habitat. The relative importance of habitat and human associated variables to urban birds is unknown. In 1999, I surveyed spring bird and plant communities along 54 perennial streams in the Portland, Oregon...
Resource Type:: Masters Thesis
Full Text:: and nonnative rose (Rosa spp.), English ivy (Hedera helix), red-osier dogwood (Cornus sericea

Multiscale relationships of wintering birds with riparian and wetland habitat in the Willamette Valley, Oregon

Creator:: Adamus, Paul R.
Abstract:: Relatively little is known about wintering bird communities in lowlands of the Pacific Northwest, yet, the condition of winter habitats potentially can pose a major constraint on bird populations. I initiated a study to determine: (1) Which avian species use lowland riparian and wetland habitats in the Willamette Valley during...
Resource Type:: Dissertation

Growth and development of temperate and tropical passerines of the New World : a life history perspective

Creator:: Austin-Bythell, Suzanne H.
Abstract:: I studied developmental rates in a suite of temperate and tropical passerine bird species from the New World to test the hypothesis that tropical passerines exhibit slower patterns of growth and development than temperate birds. I also investigated how the expression of several developmental rates varied with life history traits...
Resource Type:: Masters Thesis

Invasive bullfrog use of novel ephemeral habitats in the Pacific Northwest

Creator:: Cook, Megan Tetsuko
Abstract:: Invasive species are a major threat to global biodiversity. Understanding the mechanisms underlying successful invasions is imperative for developing effective management strategies. Plasticity in physiological, morphological, and behavioral traits could be an indicator of invasion potential in non-native species. The invasive American bullfrog (Lithobates catesbeianus) has recently been observed breeding...
Resource Type:: Masters Thesis
Full Text:: Knudsen, and Robin LeRoux. I would like to thank my advisor Tiffany Garcia for the past three years of

Twenty-year changes in riparian bird communities of east-central Oregon

Creator:: Ellis, Michael S.
Abstract:: Over the last 50 years, riparian zones in the semi-arid West have gained recognition as disproportionately important habitats for both breeding bird communities and agricultural operations. Despite growing interest in exploring avian-habitat relationships in these systems to better inform land management, few studies have attempted to describe temporal changes in...
Resource Type:: Masters Thesis
Full Text:: vegetation consisting primarily of willow species (Salix spp.), rose (Rosa spp.) and currant (Ribes spp

ScholarsArchive@OSU

Small mammal and bird abundance in relation to post-fire habitat succession in mountain big sagebrush (Artemisia tridentata ssp. vaseyana) communities

Breeding bird community composition in relation to riparian vegetation structure in grazed habitats

Modeling Fine-scale Avian Distributions and Densities with Multi-scale Models: Predicting the Past and Present

Conserving avian diversity in agricultural systems : the role of isolated Oregon white oak legacy trees

Avian communities in relation to habitat influenced by fire in a sagebrush steppe landscape

Riparian bird communities in Portland, Oregon : habitat, urbanization, and spatial scale patterns

Multiscale relationships of wintering birds with riparian and wetland habitat in the Willamette Valley, Oregon

Growth and development of temperate and tropical passerines of the New World : a life history perspective

Invasive bullfrog use of novel ephemeral habitats in the Pacific Northwest

Twenty-year changes in riparian bird communities of east-central Oregon

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