Index Catalog // ScholarsArchive@OSU

Taxonomic status of the isolated populations of tui chub referred to Gila bicolor oregonensis (Snyder)

Creator:: Bills, Frederick T.
Resource Type:: Masters Thesis

Taxonomic analyses of the Oregon chub, Oregonichthys crameri

Creator:: Bills, Debra T.
Abstract:: The Oregon chub. Oregonichthys crameri. one of Oregon's endemic freshwater fishes. is restricted to the Willamette and Umpqua rivers and their tributaries. Specimens from the two rivers have traditionally been considered the same species. The goal of this study was to re-examine that assumption and determine if the Willamette Oregon...
Resource Type:: Masters Thesis

A preliminary investigation of the spotted owl in Oregon

Creator:: Forsman, Eric D.
Abstract:: Between 1970 and 1974, data were collected on the distribution and biology of the spotted owl (Strix occidentalis) in Oregon. One-hundred and sixteen pairs and seven single birds were located. Spotted owls occurred throughout the mountains of western Oregon and on the east slope of the Cascade Range at least...
Resource Type:: Masters Thesis
Full Text:: , William (Bill) Neitro, Kirk Horn, and Bob Anderson. Roughly half of the owls located during the study

Responses to fertilization and fish stocking in the pelagic ecosystem of a naturally fishless lake

Creator:: Cameron, William A.
Abstract:: Ecologists have studied the responses of pelagic ecosystems to varying levels of nutrient loading and fish predation on many different scales ranging from small experimental enclosures to whole lake systems. There are recurring patterns of response to these two variables, which are generally predictable on the basis of biogeographic, behavioral,...
Resource Type:: Masters Thesis
Full Text:: summer rainfall. The positive response of D. kenia to conditions stimulated by high summer rainfall (and

Juvenile survival and birth-site selection of Rocky Mountain elk in northeastern Oregon

Creator:: Rearden, Spencer N.
Abstract:: With declining populations and low calf recruitment in northeastern Oregon, much interest has been generated to study the survival rates and causes of mortality of Rocky Mountain elk (Cervus elaphus nelsoni). I investigated the causes of elk calf mortality and the effects of predation risk on birth-site selection by cow...
Resource Type:: Masters Thesis
Full Text:: Coblentz and Bill Ripple for their guidance while serving on my graduate committee. I would like to thank

Environmental variables as predictors of fish assemblages in the Tillamook Basin, Oregon

Creator:: Rose, Cathleen E.
Abstract:: The Tillamook and Kilchis subbasins of the Tillamook Bay watershed (Oregon Coast Range) have differences in geology and land use history and, therefore, varied environmental conditions that could affect fish assemblages. Fifty-two randomly selected wadeable stream reaches in these two subbasins were surveyed for stream habitat and fish assemblage composition...
Resource Type:: Masters Thesis
Full Text:: this project. I also thank committee members Bill Liss and Fred Ramsey for their time and valuable

Seasonal changes in distribution of coastal cutthroat trout in an isolated watershed

Creator:: Hendricks, Steve
Abstract:: In an effort to identify seasonal distribution patterns and habitat requirements of coastal cutthroat trout Oncorhynchus clarki clarki, movement of tagged and marked individuals (35 radio-tagged, 753 PIT-tagged, and 5,322 fin-clipped) was monitored over a 14-month period in an isolated watershed in southwestern Oregon. Emigration out of the basin was...
Resource Type:: Masters Thesis
Full Text:: grateful to my conimittee members, Drs. Bill Liss and Bruce McIntosh, for many helpful questions and

Foraging Niche Separation of Adélie (Pygoscelis adeliae) and Gentoo (P. papua) Penguins During the Breeding Season at Palmer Station, Antarctica

Creator:: Pickett, Erin
Abstract:: Climate-induced range overlap can result in novel interactions between similar species and potentially lead to competitive exclusion. The Western Antarctic Peninsula is one of the most rapidly warming regions on Earth and is experiencing a poleward climate migration. This transition from a polar to sub-polar environment has resulted in a...
Resource Type:: Masters Thesis
Full Text:: ACKNOWLEDGEMENTS First and foremost, thank you to my co-advisors, Dr. Ari Friedlaender and Dr. Bill Fraser, for

Ecological implications of trout introductions to lakes of the Selway Bitterroot Wilderness, Idaho

Creator:: Bahls, Peter F.
Abstract:: The widespread introduction of trout to naturally fishless mountain lakes in the western United States has been accompanied by little research. The ecological role of trout populations occurring in 91 lakes of the central Selway Bitterroot Wilderness, Idaho, was examined with respect to 1) the sampling variability of biological and...
Resource Type:: Masters Thesis
Full Text:: help along the way, as well as graduate committee members, David McIntire, Bill Liss and Bruce McCune

The role of body size in the foraging strategies and management of avian herbivores : a comparison of dusky Canada geese (Branta canadensis occidentalis) and cackling geese (B. hutchinsii minima) wintering in the Willamette Valley of Oregon

Creator:: Mini, Anne E.
Abstract:: Body size explains much of the interspecific variation in the physiology, behavior, and morphology of birds, such as metabolic rate, diet selection, intake rate, gut size, and bill size. Based on mass-specific metabolic requirements and relative energetic costs of activities, being a certain body size has both advantages and disadvantages....
Resource Type:: Dissertation
Full Text:: : effects of sward height, body mass, and bill size. Journal of Animal Ecology 72:220–231. Durant, D

ScholarsArchive@OSU

Taxonomic status of the isolated populations of tui chub referred to Gila bicolor oregonensis (Snyder)

Taxonomic analyses of the Oregon chub, Oregonichthys crameri

A preliminary investigation of the spotted owl in Oregon

Responses to fertilization and fish stocking in the pelagic ecosystem of a naturally fishless lake

Juvenile survival and birth-site selection of Rocky Mountain elk in northeastern Oregon

Environmental variables as predictors of fish assemblages in the Tillamook Basin, Oregon

Seasonal changes in distribution of coastal cutthroat trout in an isolated watershed

Foraging Niche Separation of Adélie (Pygoscelis adeliae) and Gentoo (P. papua) Penguins During the Breeding Season at Palmer Station, Antarctica

Ecological implications of trout introductions to lakes of the Selway Bitterroot Wilderness, Idaho

The role of body size in the foraging strategies and management of avian herbivores : a comparison of dusky Canada geese (Branta canadensis occidentalis) and cackling geese (B. hutchinsii minima) wintering in the Willamette Valley of Oregon

Limit your search

Academic Affiliation

Advisor

Commencement Year

Committee Member

Creator

Contributor

Date

Decade

Degree Field

Degree Level

Degree Name

File Format

Language

License

Location

Non-Academic Affiliation

Peer Reviewed

Resource Type

Rights Statement

Subject

Search Constraints

Search Results

Limit your search