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A comparison of nest site selection and reproductive effort by reticulate sculpin (Cottus perplexus) in two streams of different geologies in the central Coast Range of Oregon

Creator:: Bateman, Douglas S.
Abstract:: Nest sites of reticulate sculpin (Cottus perplexus) were located in two stream reaches, one from a basalt basin and one from a sandstone basin. Stream reaches were similar in gradient, basin area, elevation, climate, and riparian vegetation but differed in biologic community structure and substrate characteristics. An electivity index was...
Resource Type:: Masters Thesis
Full Text:: Central Coast Range of Oregon Abstract approved: Hiram W. Li Nest sites of reticulate sculpin

Seasonal variability in diet and consumption by cottid and salmonid fishes in headwater streams in western Oregon, USA

Creator:: Raggon, Mark F.
Abstract:: Coastal cutthroat trout (Oncorhynchus clarkii clarkii) and cottids (Cottus spp) commonly co-occur in headwater streams in western Oregon. Little is known about the comparative trophic ecology of these species or how they respond to seasonal scarcity of resources. In this study I evaluated the seasonal variability in diets and consumption...
Resource Type:: Masters Thesis
Full Text:: ) and a trophic guild of cottids (Cottus asper, Cottus perplexus, Cottus gulosus) in western Oregon

The spatial distribution of wood-nesting ants in the central Coast Range of Oregon

Creator:: Nielsen, Gary R. (Gary Richard), 1956-
Resource Type:: Dissertation
Full Text:: specimens were deposited in Oregon State University's Entomology Museum. Analyses Ant-nest distributions

Northern goshawk nest site selection and habitat associations at the post-fledging family area scale in Oregon

Creator:: Daw, Sonya Kathleen
Resource Type:: Masters Thesis
Full Text:: Goshawk Nest Site Selection and Habitat Associations at the Post-fledging Family Area Scale in Oregon

Experimental analysis of intra- and interspecific competitive interactions between cutthroat trout and sculpins in small streams

Creator:: Ramirez, Ben S.
Abstract:: In the Pacific Northwest ecoregion of North America, sculpins represent a major constituent of freshwater assemblages in coastal rivers. Based on their prevalence and abundance, sculpins are likely important ecologically, yet little is known of their interactions with co-occurring species, such as widely studied salmon and trout (salmonines). In this...
Resource Type:: Masters Thesis
Full Text:: (salmonines). In this study, I evaluated inter- and intraspecific interactions involving cottids (Cottus sp

Northern goshawk habitat analysis in managed forest landscapes

Creator:: McGrath, Michael Thomas
Resource Type:: Masters Thesis
Full Text:: nest stand and PFA levels were incorporated into national forest management in eastern Oregon and

Douglas's ground squirrel as a predator upon upland game bird nests on the Soap creek experimental area in Oregon

Creator:: Stanton, Frank Webster
Resource Type:: Masters Thesis
Full Text:: ) A field invest1gt1on was madé during the 1940 nest- Ing season in the i11araette Valley, Oregon

Metamorphosis, growth, and settlement of Pacific sanddab (Citharichthys sordidus) to a continental shelf nursery, inferred from otolith microstructure

Creator:: Donohoe, Christopher James
Abstract:: Processes of metamorphosis, settlement, and growth were examined in Pacific sanddab using field studies and otolith microstructure. This flatfish transforms at large sizes, has a gradual metamorphosis, and settles to a nursery on the middle continental shelf. Eye migration takes 3 months and "metamorphosis proper" which begins after completion of...
Resource Type:: Dissertation
Full Text:: and upper slope off central Oregon bimonthly in 1989 and in March 1990-1994. Peak settlement occurred

Nesting and foraging ecology of band-tailed pigeons in western Oregon

Creator:: Leonard, Jerome Patrick
Abstract:: Pacific Coast band-tailed pigeons (Columba fasciata) have declined markedly during the past several decades. Despite implementation of increasingly restrictive hunting regulations, populations have shown minimal signs of recovery. I radio-marked 127 adult band-tailed pigeons in the central Oregon Coast Range in April-May of 1993-95 to document nesting chronology and productivity,...
Resource Type:: Dissertation
Full Text:: of eight 450 segments) relative to main stem of nest tree in the central Coast Range of Oregon, 1993

Use and selection of nesting habitat by sage grouse in Oregon

Creator:: Gregg, Michael A.
Abstract:: Sage grouse (Centrocercus urophasianus) populations in Oregon declined during the past 30 years as a result of impaired productivity. The western subspecies (C. u. phaios) was listed as a candidate for threatened and endangered status by the Department of the Interior in 1985 because of declines in Oregon and Washington...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

A comparison of nest site selection and reproductive effort by reticulate sculpin (Cottus perplexus) in two streams of different geologies in the central Coast Range of Oregon

Seasonal variability in diet and consumption by cottid and salmonid fishes in headwater streams in western Oregon, USA

The spatial distribution of wood-nesting ants in the central Coast Range of Oregon

Northern goshawk nest site selection and habitat associations at the post-fledging family area scale in Oregon

Experimental analysis of intra- and interspecific competitive interactions between cutthroat trout and sculpins in small streams

Northern goshawk habitat analysis in managed forest landscapes

Douglas's ground squirrel as a predator upon upland game bird nests on the Soap creek experimental area in Oregon

Metamorphosis, growth, and settlement of Pacific sanddab (Citharichthys sordidus) to a continental shelf nursery, inferred from otolith microstructure

Nesting and foraging ecology of band-tailed pigeons in western Oregon

Use and selection of nesting habitat by sage grouse in Oregon

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