Index Catalog // ScholarsArchive@OSU

Creator:: Hirsch, Christine L.
Abstract:: Redband trout density was examined in three forested streams in central Oregon at two scales, pool channel unit and microhabitat. Two streams were in roadless areas and one was in a "highly managed" watershed. At the larger spatial scale, trout displayed a seasonal shift in habitat use from early to...
Resource Type:: Masters Thesis
Full Text:: microhabitats in three central Oregon streams AN ABSTRACT OF THE THESIS OF Christine L. Hirsch for the

Creator:: Castillo, Gonzalo C.
Abstract:: The extent of biological invasions, their role on the feeding of native fishes and their impact on community stability were investigated in Alsea Bay and Yaquina Bay, two estuaries on the central Oregon coast, USA. Most nonindigenous species (NIS) introduced in these intermediately invaded estuaries are considered byproducts of culturing...
Resource Type:: Dissertation
Full Text:: . Bingham, B. Bookheim, J. Canton, J. Chapman, J. Cordell, L. Harris, T. Klinger, A. Kohn, C. Lambert, G

Creator:: Noble, Sandra M. (Sandra Marie)
Abstract:: Newly emerged steelhead fry (Oncorhynchus mvkiss) of hatchery and wild origins were studied in laboratory stream channels and natural streams. Objectives of the study were to determine if and how earlier emerging hatchery fry influence the emigration, realized densities, growth, habitat use, social structure, and activity patterns of localized populations...
Resource Type:: Masters Thesis
Full Text:: could actively displace wild juveniles from quality rearing habitat (Chapman 1962, Solazzi et al. 1983

Creator:: Rodnick, Kenneth J.
Abstract:: Seasonal habitat availability, utilization, and selection by young of the year (< 25 mm) and adult (>25 mm) redside shiner, Richardsonius balteatus, were studied for 1 year in sections of Greasy Creek, Benton County, Oregon. Intensive stream mapping procedures and snorkling observations provided most of the quantitative measures for habitat...
Resource Type:: Masters Thesis
Full Text:: demonstrated drastic changes in stream environments and habitat utilization by fishes (Chapman and Bjornn 1969

Creator:: Weiner, Gary S.
Abstract:: Reproduction of salmonid fishes in acidic water was studied using the rainbow trout (Salmo gairdneri). Adult trout were exposed to various levels of hydrogen ion (pH levels 4.5, 5.0, 5.5, and control [6.5 to 7.1]) during the final 6 weeks of reproductive maturation. Reduced survival rates of the progeny of...
Resource Type:: Masters Thesis
Full Text:: contributions of Dr. Gary Chapman and Mr. Don Stevens, are gratefully acknowledged. The U.S. Environmental

Creator:: Torgersen, Christian E.
Abstract:: New approaches are needed to quantify and understand spatial patterns of stream fishes and their environment. Concepts in riverine ecology emphasize the importance of thermal zones and gradual longitudinal changes in physical habitat and biota, but little is known about spatial variability within the river continuum. I present a conceptual...
Resource Type:: Dissertation

Creator:: Torgersen, Christian E.
Abstract:: This study examined the distribution and behavior of adult spring chinook salmon (Oncorhynchus tshawytscha) related to patterns of stream temperature and physical habitat at channel unit, reach, and basin-wide spatial scales in both a wilderness stream and a disturbed stream in the John Day River basin in northeastern Oregon. Thermal...
Resource Type:: Masters Thesis
Full Text:: , representing Fisheries Science 8-)L)--q6 Head of Department o i eries and Wildlife Dean of Gradu School I

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:: 100 liter fiberglass tub containing 50 mg/l of anesthetic (tricaine methane sulfonate, MS-222). Once

Creator:: Currens, Kenneth P.
Abstract:: Identifying appropriate units for conservation requires knowledge of evolutionary patterns and risks of managing at different geographical and genetic scales. I examined genetic diversity at different geographical scales among 11,400 rainbow trout (Oncorhynchus mykiss) from 243 locations in 13 major river basins throughout much of their range and among coho...
Resource Type:: Dissertation
Full Text:: , Harney Basin; I, Catlow Valley; J, Chewaucan Basin; K, Fort Rock Basin; L, Goose Lake Basin; M, Upper

ScholarsArchive@OSU