Index Catalog // ScholarsArchive@OSU

Population ecology of the dusky Canada goose (Branata candensis occidentalis Baird)

Creator:: Sheaffer, Susan E.
Abstract:: Adult dusky Canada geese (Branta canadensis occidentalis Baird) were banded with plastic neck bands and observed on the winter range during 1985-92. Annual survival rates of adult geese estimated from observation data ranged from 76% to 85%. A model of Canada goose population dynamics was developed to illustrate relationships between...
Resource Type:: Dissertation
Full Text:: , 1993 Commencement June 1993 APPROVED: Robert L. Ja of niajor Professor of Wildlife Ecology, in

Direct and indirect effects of livestock grazing intensity on processes regulating grassland bird populations

Creator:: Johnson, Tracey N.
Abstract:: In grasslands, grazing by large ungulates can influence vegetation structure, composition, primary productivity, and ultimately, ecosystem functioning. While grazing represents a complex disturbance, grazing intensity largely determines the effects of grazing on vegetation. Structural and compositional changes in the plant community caused by grazing could have bottom-up effects on species...
Resource Type:: Dissertation
Full Text:: : _____________________________________________________________________ Patricia L. Kennedy In grasslands, grazing by large ungulates can influence vegetation

The energetics of migration and reproduction of dusky Canada geese (Branta canadensis occidentalis)

Creator:: Bromley, Robert G. H.
Abstract:: Adult female Dusky Canada Geese were studied on the Copper River Delta, Alaska and in the Willamette Valley, Oregon during April through July, 1977 to 1979. Objectives of the research were to: 1) determine the chronology of use of protein and energy reserves in relation to four periods of reproduction...
Resource Type:: Dissertation
Full Text:: Robert L. Jjrvis Adult female Dusky Canada Geese were studied on the Copper River Delta, Alaska and in

Ecology of female northern pintails during winter in the San Joaquin Valley, California

Creator:: Fleskes, Joseph P.
Abstract:: I radio-tagged 191 Hatch-Year (HY) and After-Hatch-Year (AHY) female northern pintails (Anas acuta) in the San Joaquin Valley (SJV), California and studied their movements, habitat use and survival during August March, 1991-94. Overall, 94.3% wintered in central California; the highest percentage left during the 1991 drought. Tulare Basin and Mendota...
Resource Type:: Dissertation
Full Text:: individuals and organizations contributed to the success of this study. Robert L. Jarvis, my major professor

Assessment of drainwater evaporation ponds as waterfowl habitat in the San Joaquin Valley, California

Creator:: Euliss, Ned H.
Resource Type:: Dissertation
Full Text:: L. Jarvis, E. "Chuck" Meslow, Lorraine T. Miller, John A. Ruben, and David R. Thomas for their

Restoration of Columbian sharp-tailed grouse into northeastern Oregon

Creator:: Snyder, Jeffrey W.
Resource Type:: Dissertation
Full Text:: my graduate life. Committee members Dr. Fred L. Ramsey, Dr. J. Boone Kauffman and, in particular, Dr

Selected life history aspects and habitat use by Merriam's wild turkeys in Oregon

Creator:: Lutz, Robert Scott
Abstract:: Habitat use and reproductive success by Merriam's wild turkey (Meleagris gallopavo merriami) were studied in Wasco County, Oregon, during 1981-82. This low density turkey population selectively used forested cover types characterized by a variety of structural features, species, and age classes. They avoided monotypic forested cover types, used non-forested cover...
Resource Type:: Dissertation
Full Text:: thank my graduate committee, Dr. R. G. Anthony, Dr. W. H. Emmingham, Dr. W. C. Krueger, and Dr. G. L

California condors in the Pacific Northwest : integrating history, molecular ecology, and spatial modeling for reintroduction planning

Creator:: D'Elia, Jesse
Abstract:: Reintroduction programs are increasingly being used to save animals from extinction and aid in their recovery. The California Condor (Gymnogyps californianus), one of the most endangered birds in the world, is a remarkable example of how reintroduction programs can help rapidly increase a species' population numbers and range following a...
Resource Type:: Dissertation

Assessing Apparent Effects on Survival and Movement of Desert Bighorn Sheep (Ovis canadensis nelsoni) Following a Pneumonia Outbreak

Creator:: Dekelaita, Daniella J.
Abstract:: In the western United States, bighorn sheep (Ovis canadensis) have suffered major die-offs in every state since the mid-1800s, and disease from domestic sheep (Ovis aries) has been a primary factor in these events. Beginning in the early 1900s, poly-factorial, poly-microbial pneumonia was identified as a major disease affecting bighorn...
Resource Type:: Dissertation
Full Text:: respiratory disease. 5 LITERATURE CITED Austin, A. T., L. Yahdjian, J. M. Stark

Ecology and Distribution of Blue Whales in New Zealand Across Spatial and Temporal Scales

Creator:: Barlow, Dawn R.
Abstract:: The distribution of mobile marine predators often reflects underlying dynamic ecological processes. The geographical focus of this PhD is the South Taranaki Bight (STB) of New Zealand, where wind-driven coastal upwelling generates productivity and prey to support a blue whale foraging ground. The STB is also New Zealand’s most industrial...
Resource Type:: Dissertation

ScholarsArchive@OSU

Population ecology of the dusky Canada goose (Branata candensis occidentalis Baird)

Direct and indirect effects of livestock grazing intensity on processes regulating grassland bird populations

The energetics of migration and reproduction of dusky Canada geese (Branta canadensis occidentalis)

Ecology of female northern pintails during winter in the San Joaquin Valley, California

Assessment of drainwater evaporation ponds as waterfowl habitat in the San Joaquin Valley, California

Restoration of Columbian sharp-tailed grouse into northeastern Oregon

Selected life history aspects and habitat use by Merriam's wild turkeys in Oregon

California condors in the Pacific Northwest : integrating history, molecular ecology, and spatial modeling for reintroduction planning

Assessing Apparent Effects on Survival and Movement of Desert Bighorn Sheep (Ovis canadensis nelsoni) Following a Pneumonia Outbreak

Ecology and Distribution of Blue Whales in New Zealand Across Spatial and Temporal Scales

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