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Roosevelt elk habitat use in the Oregon Coast Range

Creator:: Witmer, Gary William
Abstract:: Daily and seasonal habitat use by Roosevelt elk was investigated in the Oregon Coast Range on managed, public forestland. Over 3,700 locations of 6 radio-collared cow elk were recorded during 12 consecutive months. Two elk formed part of a north band and 4 elk were part of a south band....
Resource Type:: Dissertation

Ecological characteristics of montane floodplain plant communities in the Upper Grande Ronde basin, Oregon

Creator:: Otting, Nicholas J.
Resource Type:: Masters Thesis
Full Text:: north of the study sites is 54 cm (weather records on filliwt PNW research lab, La Grande, Oregon

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

Multiscale habitat electivity and movement patterns by adult spring chinook salmon in seven river basins of northeast Oregon

Creator:: Price, David M.
Abstract:: I examined habitat electivity and movement patterns of adult spring chinook salmon at microhabitat and channel unit spatial scales, and seasonal to annual temporal scales in seven streams in the Grande Ronde, John Day, and Imnaha basins. The objective was to compare habitat use and availability among streams, channel units,...
Resource Type:: Masters Thesis
Full Text:: dedication and tireless work ethic. Numerous individuals from the PNW Research Station (USFS) and the Oregon

Survival and Home-range Size of Northern Spotted Owls in Southwestern Oregon

Creator:: Schilling, Jason W., Dugger, Katie M., and Anthony, Robert G.
Abstract:: In the Klamath province of southwestern Oregon, Northern Spotted Owls (Strix occidentalis caurina) occur in complex, productive forests that historically supported frequent fires of variable severity. However, little is known about the relationships between Spotted Owl survival and home-range size and the characteristics of fire-prone, mixed-conifer forests of the Klamath...
Resource Type:: Article
Full Text:: = 158-838, 95% CI = 354-585). The 95% confidence limits overlapped extensively, so the differences were

Individual condition and stream temperature influence early maturation of rainbow and steelhead trout, Oncorhynchus mykiss

Creator:: McMillan, John R., Dunham, Jason B., Reeves, Gordon H., Mills, Justin S., and Jordan, Chris E.
Abstract:: Alternative male phenotypes in salmonine fishes arise from individuals that mature as larger and older anadromous marine-migrants or as smaller and younger freshwater residents. To better understand the processes influencing the expression of these phenotypes we examined the influences of growth in length (fork length) and whole body lipid content...
Resource Type:: Article
Full Text:: . Reeves United States Forest Service/PNW Research Station, Corvallis, OR, USA C. E. Jordan National

The winter distribution, movement, and smolt transformation of juvenile coho salmon in an Oregon coastal stream

Creator:: Rodgers, Jeffrey D.
Abstract:: The abundance of the 1982 brood of juvenile coho salmon (Oncorhynchus kisutch) was determined in August 1983, and January and April 1984 at 20 study sites spread throughout Knowles Creek, an Oregon coastal watershed. The timing of emigration of juvenile coho from the watershed was monitored from October 1983 through...
Resource Type:: Masters Thesis

The influence of geology and timber harvest on channel morphology and salmonid populations in Oregon coast range streams

Creator:: Hicks, Brendan J.
Resource Type:: Dissertation

Heterogeneous thermal habitat for northeast Oregon stream fishes

Creator:: Ebersole, Joseph L.
Abstract:: Discrete coldwater patches within warm streams provide potential thermal refuge for coldwater fishes during periods of heat stress. This analysis focused on heterogeneity in stream water temperatures as influenced by local influx of cooler subsurface waters. Using field thermal probes and recording thermistors, we identified and characterized coldwater patches potentially...
Resource Type:: Dissertation

Prey availability overrides cover in determining growth and abundance of stream-dwelling cutthroat trout

Creator:: Wilzbach, Margaret A.
Abstract:: The abundance and biomass of cutthroat trout (Salmo clarki) have been found to be greater in logged than in forested streams of the Oregon Cascades. Although certain prey taxa increase in abundance following logging, habitat stability generally decreases and cover structures are removed. Research was conducted to examine the manner...
Resource Type:: Dissertation

ScholarsArchive@OSU

Roosevelt elk habitat use in the Oregon Coast Range

Ecological characteristics of montane floodplain plant communities in the Upper Grande Ronde basin, Oregon

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

Multiscale habitat electivity and movement patterns by adult spring chinook salmon in seven river basins of northeast Oregon

Survival and Home-range Size of Northern Spotted Owls in Southwestern Oregon

Individual condition and stream temperature influence early maturation of rainbow and steelhead trout, Oncorhynchus mykiss

The winter distribution, movement, and smolt transformation of juvenile coho salmon in an Oregon coastal stream

The influence of geology and timber harvest on channel morphology and salmonid populations in Oregon coast range streams

Heterogeneous thermal habitat for northeast Oregon stream fishes

Prey availability overrides cover in determining growth and abundance of stream-dwelling cutthroat trout

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