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: 1952
Breeding bird populations of selected grasslands in east-central North Dakota -- 1974 - Kentucky bluegrass prairie and mixed prairie I-V, VII Breeding bird populations of selected grasslands in east-central North Dakota -- 1974 - Kentucky bluegrass prairie and mixed prairie I-V, VII
Abstract has not been submitted
Authors
Douglas H. Johnson
Artificial brooding of ducklings Artificial brooding of ducklings
No abstract available.
Authors
F.B. Lee
Ground nesting of bald eagles near Yellowknife, Northwest Territories Ground nesting of bald eagles near Yellowknife, Northwest Territories
No abstract available.
Authors
R.G. Bromley, D.L. Trauger
Career opportunities in ornithology Career opportunities in ornithology
Abstract has not been submitted
Authors
F.C. James, F.G. Cooch, M.S. Ficken, C.E. Knoder
Homing to nest baskets by wild female mallards Homing to nest baskets by wild female mallards
A high rate of homing to nest baskets by adult female mallards (Anas platyrhynchos) was observed in prairie potholes of North Dakota. One hundred and thirteen female mallards were caught on nest baskets, banded, and marked with nasal saddles. Forty-six percent homed at least once to nest baskets in the marshes where they were previously captured. Two-thirds of the returnees were observed...
Authors
Harold A. Doty, F.B. Lee
Land use and prairie grouse population relationships in North Dakota Land use and prairie grouse population relationships in North Dakota
The relationship between prairie grouse and land use was studied during the period 1964-71. Prairie chickens (Tympanuchus cupido) declined from 48 males in 1964 to none in 1971. Sharp-tailed grouse (Pedioecetes phasianellus) declined from 166 males in 1964 to 57 in 1971. These declines were related to the decline in vigor and eventual loss of Soil Bank habitat on the study area. Two new...
Authors
L.M. Kirsch, Albert T. Klett, H.W. Miller
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