Index Catalog // ScholarsArchive@OSU

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:: AN ABSTRACT OF THE THESIS OF Jeffrey A. Manning for the degree

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:: AN ABSTRACT OF THE THESIS OF Michael S. Ellis for the

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:: increased Bradshaw' s desert parsley plant emergence and density of several plant stages, but did not

Over-winter demography of the gray-tailed vole (Microtus canicaudus) in fragmented and continuous habitats

Creator:: Brunkal, Heidi L.
Abstract:: Large scale disruption of natural habitats worldwide has led to concern over the effects of habitat fragmentation on wildlife populations. Small scale experiments may be a useful tool for discovering effects of fragmentation over larger landscape scales. I sought to explore the potential for using voles as an experimental model...
Resource Type:: Masters Thesis
Full Text:: to completion of this thesis, I would like to express my appreciation to D. Rosenberg, S. De Stefano

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:: et aI., 1992). Since the 1940's, pesticides have been used to control agricultural pests and

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:: decreased. 23 LITERATURE CITED Bradford, D. F., S. E. Franson, A. C. Neale, D. T. Heggem

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:: ). 5 LITERATURE CITED Allan, J. D., M. S. Wipfli, J. P. Caoutte, A. Prussian, and J. Rodgers

Influence of vegetation structure and food habits on effects of guthion 2S® (Azinphos-methyl) on small mammals

Creator:: Schauber, Eric M.
Abstract:: The Quotient Method (QM), a laboratory-based risk assessment methodology used by the Environmental Protection Agency to evaluate pesticides for registration and use, has not been thoroughly field-tested and its performance has not always been reliable. My objective was to determine if variation in vegetation structure or diet of exposed animals...
Resource Type:: Masters Thesis
Full Text:: APPROVED: Assistant Professor of Fish s and Wildlife in charge of major ead o Department of Fisheries

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:: , S. I., and A. Haney. 1987. Structure and dynamics of Midwest oak savannas. Unpublished report to

Effects of guthion (azinphos-methyl) on individual fitness correlates of gray-tailed voles in field enclosures

Creator:: Carey, Robert Lee
Resource Type:: Masters Thesis
Full Text:: (azinphos-methyl; 0,0-dimethyl S- [(4-oxo-1,2,3-benzotriazin-3(4H)- yl) methyl] 8 phosphorodithioate

ScholarsArchive@OSU

Small mammal responses to silvicultural fuels treatments in southwest Oregon

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

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

Over-winter demography of the gray-tailed vole (Microtus canicaudus) in fragmented and continuous habitats

Improving ecological risk assessment of pesticides for nontarget terrestrial vertebrates

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

Influence of vegetation structure and food habits on effects of guthion 2S® (Azinphos-methyl) on small mammals

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

Effects of guthion (azinphos-methyl) on individual fitness correlates of gray-tailed voles in field enclosures

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