Index Catalog // ScholarsArchive@OSU

Turf assemblage of a Macrocystis kelp forest : experiments on competition and herbivory

Creator:: Miles, A. Keith
Abstract:: Early and later successional stages of the assemblage of turf algae and sessile animals of a Macrocystis kelp forest were studied off San Nicolas Island, California from 1980 through 1981, and 1983 through 1984. Kelps were manipulated to determine if differences in illumination could account for dominance by turf algae...
Resource Type:: Dissertation
Full Text:: : experiments on competition and herbivory AN ABSTRACT OF THE THESIS OF A. Keith Miles for the degree of

Landscape composition around northern spotted owl nests, central Cascade Mountains, Oregon

Creator:: Swindle, Keith A.
Abstract:: This study describes the composition of forest landscapes surrounding northern spotted owl (Strix occidentalis caurina) nests in the central Cascade Mountains of Oregon. I compared forest composition around 126 owl nests in 70 pair territories with forest composition around 119 points drawn randomly from all terrestrial cover-types, and around 104...
Resource Type:: Masters Thesis
Full Text:: , central Cascade Mountains, Oregon AN ABSTRACT OF THE THESIS OF Keith A. Swindle for the degree of

Greater Sage-Grouse Demography, Habitat Selection, and Habitat Connectivity in Relation to Western Juniper and its Management

Creator:: Olsen, Andrew C.
Abstract:: The expansion of native, woody plants is a global phenomenon with characteristics and effects that are often indistinguishable from exotic invasions. These expansions have largely been driven by altered fire regimes and favorable climatic conditions. In the Great Basin of western North America, expansion of conifers such as western juniper...
Resource Type:: Dissertation
Full Text:: Andrew Caleb Olsen A DISSERTATION submitted to Oregon State University

Evolutionary history and speciation of the genus Tragopan

Creator:: Islam, Kamal
Abstract:: A study of the phyletic relationships among five species of tragopans and an outgroup, the Blood Pheasant (Ithaginis cruentus), was conducted from 1987 to 1991. Biochemical, behavioral, and external morphologic characteristics were compared. A cladistic approach was used to compare the behavioral, biochemical, and external morphologic data collectively, as different...
Resource Type:: Dissertation
Full Text:: approved: Redacted for Privacy JAI) A. Cra ord A study of the phyletic relationships among five species

Factors associated with dusky Canada goose nesting and nest success on artificial nest islands of the western Copper River Delta

Creator:: Maggiulli, Nicole Marie
Abstract:: The population of dusky Canada geese (Branta canadensis occidentalis; hereafter, dusky geese) nesting on the western Copper River Delta (CRD) in south- central Alaska has been in decline since the late 1970s. In an effort to alleviate mammalian predation, increase nest success, and avoid a listing under the U.S. Endangered...
Resource Type:: Masters Thesis
Full Text:: appreciated assistance from Samantha Greenwood, Kelly Christiansen, Jonathan Thompson, Keith Olsen, Tad

The Role of Trees and Thermal Refugia in Greater Sage-Grouse Brood Habitat Selection

Creator:: Dungannon, Tyler D.
Abstract:: It is well documented that greater sage-grouse (Centrocercus urophasianus; hereafter sage-grouse) populations have been in decline throughout their range in the western United States. Currently, sage-grouse occupy approximately 56% of their historic distribution prior to European settlement. Numerous factors have been cited as potential causes for declining productivity and contraction...
Resource Type:: Masters Thesis
Full Text:: . 2002. Ontogeny of thermoregulation in precocial birds. Elsevier. 131: 751-763. Olsen, A. C

The Impacts of Juniper Removal on Native Herbaceous Vegetation and Surface-Dwelling Invertebrates in the Sagebrush Steppe

Creator:: Haab, Kimberly A.
Abstract:: Understanding the effects of disturbance and restoration on a species’ habitat is essential for understanding the demographic rates and population trends observed in a species. Sufficient habitat provides the space and resources required for survival and successful reproduction, such as food availability, access to water, protection from predators, protection from...
Resource Type:: Masters Thesis
Full Text:: Kimberly A. Haab for the degree of Master of Science in Wildlife Science presented on December 7, 2022

Selection of nesting and brood-rearing habitat by female ring-necked pheasants in the Willamette Valley, Oregon

Creator:: Meyers, S. Mark
Abstract:: During spring 1981, 112 radio-equipped female pheasants (Phasianus colchicus), were released in the Willamette Valley, Oregon. Hens were monitored to determine location of nest and brood-rearing sites. Vegetation around each nest and brood-rearing site was classified as one of 5 cover types available on the study areas. Further description of...
Resource Type:: Masters Thesis
Full Text:: particularly early in the season. A review of pheasant habitat requirements by Olsen (1977) indicated that

An analysis of avian communities on a dredged material island

Creator:: Edwards, Daniel K.
Resource Type:: Masters Thesis
Full Text:: used individually. AN ANALYSIS OF AVIAN COMMUNITIES ON A DREDGED MATERIAL ISLAND by Daniel Keith

Habitat use by Western Tragopans in northeastern Pakistan

Creator:: Islam, Kamal
Abstract:: Populations of Western Tragopans Tragopan melanocephalus were studied at two areas (Machiara and Salkhala) in the Neelum Valley of northeastern Pakistan. A total of 130 sightings of birds was noted during the breeding seasons in 1982 and 1983, but only 100 were re-located for vegetation analysis. More sightings of birds...
Resource Type:: Masters Thesis
Full Text:: studied at two areas (Machiara and Salkhala) in the Neelum Valley of northeastern Pakistan. A total of

ScholarsArchive@OSU

Turf assemblage of a Macrocystis kelp forest : experiments on competition and herbivory

Landscape composition around northern spotted owl nests, central Cascade Mountains, Oregon

Greater Sage-Grouse Demography, Habitat Selection, and Habitat Connectivity in Relation to Western Juniper and its Management

Evolutionary history and speciation of the genus Tragopan

Factors associated with dusky Canada goose nesting and nest success on artificial nest islands of the western Copper River Delta

The Role of Trees and Thermal Refugia in Greater Sage-Grouse Brood Habitat Selection

The Impacts of Juniper Removal on Native Herbaceous Vegetation and Surface-Dwelling Invertebrates in the Sagebrush Steppe

Selection of nesting and brood-rearing habitat by female ring-necked pheasants in the Willamette Valley, Oregon

An analysis of avian communities on a dredged material island

Habitat use by Western Tragopans in northeastern Pakistan

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