Theses
Science Quality and Integrity
The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
Browse more than 100 theses authored by our scientists going back to 1959 and refine search by topic, location, year, and advanced search.
Filter Total Items: 158
Breeding biology and prey selection of ferruginous hawks in northwestern South Dakota
No abstract available.
Authors
C.L. Blair
Passive hemolytic plaque assay as a means for detecting antibody producing cells in rainbow trout immunized with the O-antigen of enteric redmouth bacteria
No abstract available at this time
Authors
D. P. Anderson
Response of a stream channel to an increase in sediment load
No abstract available at this time
Authors
Mary Ann Madej
Studies on vertical and horizontal transmission of duck plague virus in apparently healthy waterfowl
Healthy waterfowl were found to be carriers of duck plague (DP) virus. Black ducks (Anas rubripes) and Canada geese (Branta canadensis) surviving a natural outbreak of DP at Coloma, Wisconsin, in 1973 yielded DP virus in cloacal swabs taken four years postinfection. Experimental infection of previously unexposed mallard ducks (Anas platyrhynochos) with the Coloma strain of DP virus CO-WI (73) also
Authors
Elizabeth C. Burgess
Biology of the porcupine (Erethizon dorsatum) in northwestern South Dakota
No abstract available.
Authors
J. Johnson
Temporal patterns of courtship in a caviomorph rodent, the green acouchi, (Myoprocta pratti)
No abstract available at this time
Authors
C. Schonewald
Behavioral interactions in North American treefrogs
No abstract available at this time
Authors
Gary M. Fellers
Patterns of migration of mourning doves in the western management unit
No abstract available at this time
Authors
A.K. Miles
Populations dynamics of the cactus mouse (Peromyscus emericus) in two communities of mesquite, (Prosopis sp.), a systems approach
No abstract available at this time
Authors
J. A. Howell
An evaluation of attempts to reestablish sea otters in Oregon
No abstract available at this time
Authors
R.J. Jameson
Duck plague: carrier state and gross pathology in black ducks
Duck plague (UP) is a highly fatal disease of ducks, geese, and swans (family Anatidae), produced by a reticulo-endotheliotrophic virus classified as a member of the Herpesvirus group. The disease was recognized in Europe in 1949. On the American continent, the disease was first diagnosed in the United States in 1967. Very little is known of DP virus ecology, particularly of the mechanisms of inte
Authors
Jorge E. Ossa