Publications
USGS Northern Prairie Wildlife Research Center staff publish results of their research in USGS series reports and in peer-reviewed journals. Publication links are below. Information on all USGS publications can be found at the USGS Publications Warehouse.
Filter Total Items: 1934
Analysis of radiotracking data using digitized habitat maps Analysis of radiotracking data using digitized habitat maps
A method is described that provides a rapid and accurate analysis of habitat used by radio-equipped animals. The digitizer (basically an X-Y plotter in reverse) converts maps into digital form by describing each habitat unit as a polygon that closely approximates the actual shape of the unit. The coordinates of each polygon are then stored on magnetic tape. Habitat classification data...
Authors
D.S. Gilmer, S.E. Miller, L.M. Cowardin
Mercury residues in pintails breeding in North Dakota Mercury residues in pintails breeding in North Dakota
Livers of 42 pintail hens (Anas acuta) breeding in eastern North Dakota during the spring and early summer of 1969 and 1970 were analyzed for total mercury by the neutron activation technique. Mercury content on a wet weight basis ranged from 0.055 ppm to 9.512 ppm and averaged 0.888 ± 1.796 ppm (SD). Liver mercury levels of hens collected in early spring (prior to planting of crops)...
Authors
Gary L. Krapu, G.A. Swanson, H.K. Nelson
High survival and homing rate of hand-reared wild-strain mallards High survival and homing rate of hand-reared wild-strain mallards
In the summer of 1970, 648 (329 males and 319 females) hand-reared wild-strain mallards (Anas platyrhynchos) were banded and released at the Arrowwood National Wildlife Refuge, Edmunds, North Dakota. The females were also marked with numbered nasal saddles. Liberation was by the gentle release method, and no special effort was made to isolate or condition the ducklings prior to release...
Authors
F.B. Lee, A.D. Kruse
Chemical stability of preserved oligotrophic water samples Chemical stability of preserved oligotrophic water samples
Tests were conducted to determine whether changes that may occur in the chemical characteristics of stored oligotrophic waters collected on 15 sites in northeastern Minnesota were affected by chloroforming. Chloroform was added on site to one of each pair of samples to stabilize the organic content of the water by preventing biological decomposition. The samples were subsequently stored...
Authors
V. A. Adomaitis, J.A. Shoesmith, G.A. Swanson
A preliminary classification of wetland plant communities in north-central Minnesota A preliminary classification of wetland plant communities in north-central Minnesota
A classification of wetland plant communities was developed for a study area in north-central Minnesota in order to analyze data on waterfowl use of habitat that were gathered by radio telemetry. The classification employs features of several earlier classifications in addition to new classes for bogs and lakeshore communities. Brief descriptions are given for each community, and the...
Authors
L.M. Cowardin, Douglas H. Johnson
The age distribution of environmental periodicals The age distribution of environmental periodicals
Abstract has not been submitted
Authors
Douglas H. Johnson
Thirty-seventh breeding bird census - mixed prairie Thirty-seventh breeding bird census - mixed prairie
Abstract has not been submitted
Authors
Douglas H. Johnson, Gary L. Krapu
Migrational homing by a pair of mallards Migrational homing by a pair of mallards
It is generally assumed that wild, North American female dabbling ducks (Anatinae: Anatini) select new mates each year and may return to the same nesting areas in consecutive years (McKinney 1964, Wildfowl 16: 93). Lincoln (1934, Bird-Banding 5: 151) first documented migrational homing in a female Mallard (Anas platyrhynchos), and Sowls (1955, Prairie ducks, Harrisburg, Pennsylvania...
Authors
T.J. Dwyer, S.R. Derrickson, D.S. Gilmer
Mortality among birds, mammals and certain snakes on 17 miles of Minnesota roads Mortality among birds, mammals and certain snakes on 17 miles of Minnesota roads
Abstract has not been submitted
Authors
A.B. Sargeant, J.E. Forbes
Canada goose restoration in North Dakota Canada goose restoration in North Dakota
Abstract has not been submitted
Authors
F.B. Lee, A.D. Kruse, C.H. Schroeder
Influence of radio packs on captive mallards and blue-winged teal Influence of radio packs on captive mallards and blue-winged teal
Back-mounted radio packs of three weights were attached to 30 captive mallards (Anas platyrhynchos) and 30 blue-winged teal (A. discors), and physical condition of the birds was evaluated for 12 weeks. All groups with radio packs lost more weight than did control groups. Feather wear often followed by skin irritation occurred in the axillary region of the wings on 90 percent of the...
Authors
R. J. Greenwood, A.B. Sargeant
Preliminary list of natural areas in North Dakota Preliminary list of natural areas in North Dakota
Abstract has not been submitted
Authors
H.A. Kantrud