Index Catalog // ScholarsArchive@OSU

Ecology of breeding mallards : nest parasitism; brood survival; and habitat utilization

Creator:: Talent, Larry Gene
Abstract:: In 1976 and 1977 I examined three broad problems associated with the recruitment of young mallards, Anas platyrhynchos, in the Prairie Pothole Region of North Dakota. The three problems studied were: the effects of interspecific nest parasitism on production; the chronology and magnitude of total-brood loss during the brood-rearing period;...
Resource Type:: Dissertation
Full Text:: committee members, Robert L. Jarvis, Charles E. Warren, Paul L. Farber, and Frank L. Moore, for their

Ecology of harlequin ducks in Prince William Sound, Alaska, during summer

Creator:: Dzinbal, Kenneth A.
Abstract:: Harlequin ducks (Histrionicus histrionicus) were observed during the summers of 1979 and 1980 in Sawmill Bay, northeast Prince William Sound, Alaska. Harlequins were associated with a short, medium gradient, non-glacial stream (Stellar Creek) also used by salmon. Although harlequins nested along Stellar Creek, they apparently did not establish home ranges...
Resource Type:: Masters Thesis
Full Text:: foremost my advisor, Robert Jarvis, for his guidance, support, and friendship. His knowledge and insight

Diet and nutrition of breeding canvasback and redhead ducks at Ruby Lake National Wildlife Refuge, Nevada

Creator:: Noyes, James Harry
Abstract:: Diet, nutrition, and foraging strategies of canvasbacks (Aythya valisineria) and redheads (A. americana) were studied by collecting actively feeding birds throughout the reproductive season in 1980 and 1981; samples of available foods were taken each time a bird was collected. Nutrient composition of the aggregate diet was determined for each...
Resource Type:: Masters Thesis
Full Text:: thanks to my major professor, Dr. Robert L. Jarvis, for valuable editorial assistance and guidance

Suppression of take-all [Gaeumannomyces graminis (Sacc.) Arx & Olivier var. tritici Walker] of wheat (Triticum aestivum L.) by banded ammonium and chloride fertilizers

Creator:: Halsey, Mark Evan
Resource Type:: Dissertation
Full Text:: and Chloride Fertilizers. Abstract approved: Dr. Robert L. Powelson The severity of root attack by

The effect of self-reference upon memory processing of the content of a television documentary in older adults

Creator:: Chintakanont, Churaiporn
Abstract:: The study investigates the influence of the self-reference effect upon the amount of main and subordinate ideas which older adults can recall and recognize after viewing the television documentary entitled, The Xinquana: Aborigines of South America. The participants are native English-speaking Americans who are 50 years old or older. The...
Resource Type:: Dissertation
Full Text:: Redacted for Privacy Abstract approved: Dr. Robert L. Rice The study investigates the influence of the

Forecasting Pseudocercosporella herpotrichoides foot rot of winter wheat

Creator:: Grybauskas, Arvydas P.
Abstract:: The use of fungicides for the control of foot rot of winter wheat, caused by Pseudocercosporella herpotrichoides (Fron) Dei., requires a forecast of disease risk to optimize this management practice ecologically and economically. Foot rot occurs in both the mild, wet (100+ cm, ppt./year) annual cropped areas in western Oregon,...
Resource Type:: Dissertation
Full Text:: herpotrichoides Foot Rot of Winter Wheat Abstract approved: Redacted for Privacy Dr. Robert L. Powelson The

An analysis of accuracy of finite difference and finite element methods for the wave equation

Creator:: Minei, Marvin
Abstract:: In this paper, Fourier analysis is used to investigate various approximation methods for the one- and two-dimensional wave equations. The spatial derivatives are approximated by the second order centered finite difference method, the linear and quadratic finite element methods, and the fourth order centered finite difference method. The approximation schemes...
Resource Type:: Masters Thesis
Full Text:: ACKNOWLEGEMENTS First of all, I would like to thank Dr. Robert L. Higdon for helping me to complete this paper

Influence of site, soil, and inoculum density on dwarf bunt (Tilletia controversa Kühn) of winter wheat

Creator:: Clark, Deborah Ann, 1954-
Abstract:: Field microplot studies conducted over two seasons (1982-1984) evaluated the influence of four physically and chemically diverse soils collected from Pacific Northwest wheat fields on the incidence of dwarf bunt of winter wheat caused by Tilletia controversa Kuhn. These soils were placed at Flora and Pendleton, Oregon to determine the...
Resource Type:: Masters Thesis
Full Text:: review of the thesis. A special thanks to my major professor Dr. Robert L. Powelson without whose advice

Site tenacity, mate retention and sexual dimorphism in Black Terns

Creator:: Stern, Mark A.
Abstract:: Between 1982-1984 I studied site tenacity and mate retention in Black Terns at Sycan Marsh, Lake County, Oregon. I banded 778 adult Black Terns and used this marked population to test the hypotheses that site tenacity and mate retention would be less for Black Terns which nest in variable marsh...
Resource Type:: Masters Thesis
Full Text:: Scientific Association. I thank Dr. Robert L. Jarvis for serving as my major professor, and providing

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

Creator:: Euliss, Ned H.
Resource Type:: Dissertation
Full Text:: 11, 1989 ACKNOWLEDGEMENTS I wish to thank my graduate committee members, David S. Gilmer, Robert

ScholarsArchive@OSU

Ecology of breeding mallards : nest parasitism; brood survival; and habitat utilization

Ecology of harlequin ducks in Prince William Sound, Alaska, during summer

Diet and nutrition of breeding canvasback and redhead ducks at Ruby Lake National Wildlife Refuge, Nevada

Suppression of take-all [Gaeumannomyces graminis (Sacc.) Arx & Olivier var. tritici Walker] of wheat (Triticum aestivum L.) by banded ammonium and chloride fertilizers

The effect of self-reference upon memory processing of the content of a television documentary in older adults

Forecasting Pseudocercosporella herpotrichoides foot rot of winter wheat

An analysis of accuracy of finite difference and finite element methods for the wave equation

Influence of site, soil, and inoculum density on dwarf bunt (Tilletia controversa Kühn) of winter wheat

Site tenacity, mate retention and sexual dimorphism in Black Terns

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

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