Index Catalog // ScholarsArchive@OSU

Fire ecology and management in plant communities of Malheur National Wildlife Refuge, southeastern Oregon

Creator:: Young, Richard P.
Abstract:: This research assesses prescribed burning as a habitat management technique in wetlands and associated upland communities of Malheur National Wildlife Refuge, southeastern Oregon. Experimental burns were conducted to evaluate fire behavior and effects in wetland and upland habitats, and, fire effects on Cirsium arvense. Wetland plant communities were monotypic stands...
Resource Type:: Dissertation

Ecology of feral pigs on Santa Catalina Island

Creator:: Baber, Daniel W.
Abstract:: A feral pig population on Santa Catalina Island, California, was studied for 17 months beginning in July 1980. Density was estimated to be 21 to 34 pigs/km² (95% confidence interval) using capture-recapture techniques. Dry season home ranges determined from radio-telemetry data were small and differed significantly between boars and sows....
Resource Type:: Dissertation

Ecology of Great Basin Canada goose broods in southcentral Washington

Creator:: Eberhardt, Lester E.
Abstract:: The ecology of female Great Basin Canada geese (Branta canadensis moffitti) and their broods was studied during the rearing seasons of 1983 and 1984 on the Columbia River in southcentral Washington. The movements and activities of 41 adult female geese, marked with radio-transmitters, and their broods were monitored. Adult female...
Resource Type:: Dissertation
Full Text:: Ecology of Great Basin Canada Goose Broods in Southcentral

Environmental contaminants and ecology of bald eagles in southcentral Oregon

Creator:: Frenzel, Richard Wilmarth
Abstract:: Food habits and levels of organochlorine compounds, lead, and mercury in resident and wintering bald eagles were studied in southcentral Oregon and California, 1979-83. Food habits were assessed by examination of castings from winter communal roosts, identification of 2938 prey items found at nest sites and foraging areas, and observations...
Resource Type:: Dissertation
Full Text:: Title: Environmental Contaminants and Ecology of Bald Eagles in Southcentral Oregon Abstract approved

Comparative ecology of bobwhite and scaled quail in southern Texas

Creator:: Wilson, Marcia H.
Abstract:: For my research goals I addressed the theoretical importance of competition in habitat selection of 2 quails and examined the use of resources in peripheral and core areas. Methodological objectives were to determine cover and food selection of Texas bobwhite (Colinus virginianus texanus) and chestnut-bellied scaled quail (Callipepla squamata castanogastris)...
Resource Type:: Dissertation

The feeding ecology of the gumboot chiton, Cryptochiton stelleri (Middendorff, 1846)

Creator:: Yates, Kenneth R.
Abstract:: Investigations about the feeding ecology of a consumer can facilitate prediction of its effects on prey populations and the biological community. The aspects of feeding ecology that are important to predicting consumer effects include foraging movements, feeding preference and selectivity, and the effects of physical factors on foraging behavior and...
Resource Type:: Dissertation

Ecology and distribution of riparian vegetation in the Trout Creek Mountains of southeastern Oregon

Creator:: Evenden, Angela G.
Resource Type:: Dissertation
Full Text:: of Doctor of Philosophy in Botany and Plant Pathology presented on June 22, 1989 Title: Ecology and

Big sagebrush (Artemisia tridentata) ecology and management with emphasis on prescribed burning

Creator:: Champlin, Mark R. (Mark Randolph)
Abstract:: Four studies were conducted. First, mountain big sagebrush communities were burned at Lava Beds National Monument, California, and The Crooked River National Grassland, Oregon. In two years at Lava Beds, basal cover of Idaho fescue in one community and Thur- ber's needlegrass in one of three communities did not recover....
Resource Type:: Dissertation
Full Text:: Big sagebrush (Artemisia tridentata) ecology and

Experimental taxonomy, 1930-1950 : the impact of cytology, ecology, and genetics on ideas of biological classification

Creator:: Hagen, Joel Bartholemew
Abstract:: During the years between 1930 and 1950 a number of attempts were made to introduce techniques and ideas from cytology, ecology, and genetics into the field of taxonomy. Advocates of this "experimental taxonomy" believed that cytological, ecological, and genetic techniques would provide a rigorous, objective methodology to replace the traditional...
Resource Type:: Dissertation
Full Text:: , Ecology, and Genetics on Ideas of Biological Classification AN ABSTRACT OF THE THESIS OF Joel

Marine herbivore-plant interactions : the feeding ecology of the sea slug Placida dendritica

Creator:: Trowbridge, Cynthia D.
Abstract:: The feeding ecology of a common temperate mesoherbivore, the oligophagous sea slug Placida dendritica (Gastropoda: Opisthobranchia: Ascoglossa), was examined from April 1985 to June 1989. Along the central coast of Oregon, Placida consumed three host species: the low intertidal green algae Codium setchellii, C. fragile, and Bryopsis corticulans. Individual slugs...
Resource Type:: Dissertation
Full Text:: ecology of the sea slug Placida dendritica AN ABSTRACT OF THE THESIS OF Cynthia D. Trowbridge for the

ScholarsArchive@OSU

Fire ecology and management in plant communities of Malheur National Wildlife Refuge, southeastern Oregon

Ecology of feral pigs on Santa Catalina Island

Ecology of Great Basin Canada goose broods in southcentral Washington

Environmental contaminants and ecology of bald eagles in southcentral Oregon

Comparative ecology of bobwhite and scaled quail in southern Texas

The feeding ecology of the gumboot chiton, Cryptochiton stelleri (Middendorff, 1846)

Ecology and distribution of riparian vegetation in the Trout Creek Mountains of southeastern Oregon

Big sagebrush (Artemisia tridentata) ecology and management with emphasis on prescribed burning

Experimental taxonomy, 1930-1950 : the impact of cytology, ecology, and genetics on ideas of biological classification

Marine herbivore-plant interactions : the feeding ecology of the sea slug Placida dendritica

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