Index Catalog // ScholarsArchive@OSU

Abundance and habitat associations of Washington ground squirrels in north-central Oregon

Creator:: Greene, Eric
Abstract:: Much of the Columbia River Basin has been cultivated for agriculture, which has reduced and fragmented the native shrub-steppe habitats. As a result, the range of the Washington ground squirrel (Spermophilus washingtoni) has been significantly reduced, prompting the states of Washington and Oregon to review their status. Consequently, I investigated...
Resource Type:: Masters Thesis
Full Text:: - Perennial Grass:Microbiotic Crust r = 0. 73 b - Silt:Sand r = -0.99 22%) and the mean percent cover of

Activity of bats in thinned, unthinned, and old-growth forests in the Oregon Coast Range

Creator:: Humes, Marcia Lynn
Abstract:: Ten species of bats occur in the Oregon Coast Range and are hypothesized to be associated with late-successional forests. The development of characteristics of late-successional forests in young forest stands can be accelerated through silvicultural practices such as thinning I examined the effects of thinning on the use of forests...
Resource Type:: Masters Thesis
Full Text:: stand types at 11 sites in the Oregon Coast Range in 1994, excluding Bear Creek (a); and in 1995 (b) 24

Activity patterns and behavior of free-living Nuttall's cottontails

Creator:: Gehman, Steven D.
Abstract:: Population attributes, behavior, and activity patterns of Nuttall's cottontails (Sylvilagus nuttallii) inhabiting a juniper-sagebrush scabland community in central Oregon were studied between June 1980 and August 1981. Cottontails were trapped, marked for individual recognition, and released at their sites of capture. Data collected by periodic trapping and censusing of cottontails...
Resource Type:: Masters Thesis
Full Text:: Cottontails :;-/) . Redacted for Privacy Abstract Approved: 1 / B. J. Verts Population attributes, behavior

Age-specific and lifetime reproductive success of known age Northern Spotted Owls on four study areas in Oregon and Washington

Creator:: Loschl, Peter J.
Abstract:: Northern Spotted Owls (Strix occidentalis caurina) are a long-lived forest owl and range-wide declines in their numbers have resulted in the species being listed as threatened under the endangered species act. While many studies have been focused on population trends and reproductive performance of Spotted Owls from different age-classes, none...
Resource Type:: Masters Thesis
Full Text:: ........................................................................ 124 B Top and competitive models that describe the relation of age and reproduction for

American marten distributions over a 28 year period : relationships with landscape change in Sagehen Creek Experimental Forest, California, USA

Creator:: Moriarty, Katie M.
Abstract:: The distribution of American martens (Martes americana) within Sagehen Creek Experimental Forest (SCEF), Tahoe National Forest, California has been periodically documented from 1980–1993. This area has been the location of nine marten surveys, each involving a systematic detection/nondetection survey on the same grid. These data are an unprecedented time series...
Resource Type:: Masters Thesis
Full Text:: . ...............................................................................................6 2. Locations of recent fires (A) and roads and harvest activities (B) in and around Sagehen

Amphibian communities and physical characteristics of intermittent streams in old-growth and young forest stands in western Oregon

Creator:: Lee, Yu Man
Abstract:: Intermittent, headwater streams recently have been recognized as important components of forest ecosystems and have been provided increased protection by the Northwest Forest Plan. However, few studies have examined their distribution, dynamics, and ecological roles, such as habitat for wildlife. My goal was to provide additional information on the ecology...
Resource Type:: Masters Thesis
Full Text:: , and basic igneous rock, such as basalt and andesite (Franklin and Dymess 1988). Topography

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:: photographs 2.2 Influence of habitat characteristics on predicted abundance of (a) Brewer's sparrows and (b

Biodiversity in managed forests of western Oregon : species assemblages in leave islands, thinned, and unthinned forests

Creator:: Wessell, Stephanie J.
Abstract:: Both leave islands, or green tree retention clusters, and thinning prescriptions have been proposed as alternative silvicultural strategies designed to sustain the structural and biological diversity of managed forests. However, the relationship of the physical structure of leave islands and thinned forests to their associated microclimates, flora, and fauna remain...
Resource Type:: Masters Thesis
Full Text:: 103 BIBLIOGRAPHY 110 APPENDICES 122 Appendix A: Flora species list 123 Appendix B: Fauna species

Bird communities in 5- to 34- year old managed Douglas-fir stands on the Willamette National Forest, Oregon Cascades

Creator:: Bettinger, Kelly Anne
Abstract:: Breeding bird communities were examined in 18 managed Douglas-fir stands in 6 age classes from 5 to 34 years old in spring and early summer, 1993 on the Detroit Ranger District, Willamette National Forest, Oregon. The range of seral stages included early shrub/sapling, late shrub/sapling, and pole. In general, the...
Resource Type:: Masters Thesis
Full Text:: ' latitude. The area is part of the extensive western hemlock vegetation zone as classified by Franklin and

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:: , continuous willow) in Bear and Silvies valleys, Grant County, Oregon, 1993-94 80 B. Available information

ScholarsArchive@OSU

Abundance and habitat associations of Washington ground squirrels in north-central Oregon

Activity of bats in thinned, unthinned, and old-growth forests in the Oregon Coast Range

Activity patterns and behavior of free-living Nuttall's cottontails

Age-specific and lifetime reproductive success of known age Northern Spotted Owls on four study areas in Oregon and Washington

American marten distributions over a 28 year period : relationships with landscape change in Sagehen Creek Experimental Forest, California, USA

Amphibian communities and physical characteristics of intermittent streams in old-growth and young forest stands in western Oregon

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

Biodiversity in managed forests of western Oregon : species assemblages in leave islands, thinned, and unthinned forests

Bird communities in 5- to 34- year old managed Douglas-fir stands on the Willamette National Forest, Oregon Cascades

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

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