Index Catalog // ScholarsArchive@OSU

Response of avian communities to herbicide-induced vegetation changes, western Oregon

Creator:: Morrison, Michael L.
Abstract:: The relationships between avian community structure and herbicide modification of vegetation were analyzed on early-growth clearcuts in western Oregon that had received phenoxy herbicide treatment 1 or 4 years previously. Only minor effects of herbicide treatment were evident 1-year after spraying, except for red adler (Alnus rubra), which still exhibited...
Resource Type:: Dissertation
Full Text:: showed no obvious signs of the treatment by 4 years post-spray. For both 1 and 4 years post-spray

Influence of limited access roads on Roosevelt elk in the Oregon Coast Range

Creator:: Cole, Eric K.
Abstract:: No studies have evaluated the effects of limited vehicle access on movements, survival and habitat use of Roosevelt elk (Cervus elaphus roosevelti) . We installed twenty gates, restricting motorized vehicle access by the public in seven discrete Road Management Areas (RMAs), comprising 35% of the study area. We radio-tracked 31...
Resource Type:: Masters Thesis
Full Text:: , particularly for Rocky Mountain elk. There is no information on the efficacy of road closures or limited-road

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:: western Cascades. The purpose of my study is to provide information on bird communities in young seral

Spatial and temporal distribution of juvenile Steller sea lion (Eumetopias jubatus) predation events in the Gulf of Alaska

Creator:: Vazquez, Norma A.
Abstract:: The first objective of this study was to quantify the intensity of space use of 70 juvenile (12-26 months old) Steller sea lions (SSLs) from the western Distinct Population Segment (DPS) in the Kenai Fjord(KF)/Prince William Sound (PWS) region of Alaska as derived from externally attached ARGOS satellite transmitter tags....
Resource Type:: Masters Thesis
Full Text:: provide information on end-of-life locations to allow assessment of long-term emigration patterns and

Home range and habitat use of pileated woodpeckers, western Oregon

Creator:: Mellen, Teresa Kim
Abstract:: Home range and habitat use by pileated woodpeckers (Dryocopus pileatus) were studied in the Coast Ranges of western Oregon. Radio-telemetry was used to determine home ranges of 11 woodpeckers and habitat use of 14 woodpeckers after young had fledged during summers from 1982 to 1985. Home range size for individual...
Resource Type:: Masters Thesis
Full Text:: . Supplemental information for both parts is given in the appendices. The format is similar in both parts 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:: concern about the lack of information on basic biology and habitat requirements of bats (Forest Ecosystem

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:: the end of the study. Reproduction occurred only during the fall period, and there were no

Effects of oil and natural gas development on territory occupancy of ferruginous hawks and golden eagles in Wyoming, USA

Creator:: Wallace, Zachary P.
Abstract:: Energy development is expanding rapidly across the western US. Negative effects have been documented for some wildlife, but consequences of development are unclear for other taxa, including raptors. We had the opportunity to examine effects of oil and natural gas development on two raptor species of conservation concern, ferruginous hawks...
Resource Type:: Masters Thesis
Full Text:: boundaries, but caused no apparent change in density of nesting raptors in surrounding areas (Young et al

Environmental contaminants and breeding biology of great blue herons in the Columbia River Basin

Creator:: Thomas, Carmen M.
Abstract:: Great blue heron (Ardea herodias) eggs and prey items were collected from six colonies on the Columbia and Willamette rivers and Puget Sound during 1994-95. Contaminant concentrations, reproductive success, and biomagnification factors (BMFs) were determined and effects of residue levels were measured by H4IIE rat hepatoma and ethoxyresorufin-O-dealkylase (EROD) bioassays....
Resource Type:: Masters Thesis
Full Text:: elevated levels of 1,2,3,6,7,8- HxCDD (appendix B-3). No correlation was detected between distance of the

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
Full Text:: woody debris but no significant changes in densities or biomass of small mammals were observed

ScholarsArchive@OSU

Response of avian communities to herbicide-induced vegetation changes, western Oregon

Influence of limited access roads on Roosevelt elk in the Oregon Coast Range

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

Spatial and temporal distribution of juvenile Steller sea lion (Eumetopias jubatus) predation events in the Gulf of Alaska

Home range and habitat use of pileated woodpeckers, western Oregon

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

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

Effects of oil and natural gas development on territory occupancy of ferruginous hawks and golden eagles in Wyoming, USA

Environmental contaminants and breeding biology of great blue herons in the Columbia River Basin

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

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