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: 1907
The prairie: to know it is to appreciate it
Abstract has not been submitted
Authors
J. T. Lokemoen, G.L. Krapu
Nematode parasites of waterfowl (Anseriformes) from western United States
Thirty-four species of nematodes were found in 415 Anseriformes (Anatidae) of 27 species; 93.7% of birds over 4 weeks old were infected. Data on prevalence, host specificity, age of host, and geographic distribution are given. Infections were more intense in sick birds and birds in poor physical condition. Accidental or abnormal infection was more likely in sick than in normal birds. From 1 to 13
Authors
M.E. McDonald
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
D. H. Johnson
Utilization of ERTS-1 for appraising changes in continental migratory bird habitat
No abstract available.
Authors
E.A. Work, D.S. Gilmer, A.T. Klett
Relationships between chemical structure and rat repellency. II. Compounds screened between 1950 and 1960
Over 4,600 compounds, chiefly organic types, were evaluated using both a food acceptance test (Part A) and a barrier penetration bioassay (Part B), to correlate relationships between chemical structure and rodent repellency.These chemicals are indexed and classified according to the functional groups present and to the degree of substitution within their molecular structures. The results of reduct
Authors
W.A. Bowles, V. A. Adomaitis, J.B. DeWitt, J.J. Pratt
New concepts regarding the production of waterfowl and other game birds in areas of diversified agriculture
Many concepts regarding breeding ecology of waterfowl and the influences of environmental factors on annual production have changed in the past 20 years. These influences are especially pronounced in the prairie region of central North America where agriculture becomes more intensive each year. The principal task assigned to this Research Center when established in 1965 was to determine the relati
Authors
H.K. Nelson, H. F. Duebbert
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 at 25 deg.
Authors
V. A. Adomaitis, J.A. Shoesmith, G.A. Swanson
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 important pla
Authors
L.M. Cowardin, D. H. Johnson
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) were signific
Authors
G.L. Krapu, G.A. Swanson, H.K. Nelson
An incident of fenthion mosquito control and subsequent avian mortality
Mass mortality among migratory birds at Grand Forks, North Dakota, was attributed to a mosquito control operation employing the insecticide fenthion. The factors involved may have included the toxicity of the pesticide for birds, the method of application and coincidence with the peak of the spring warbler migration.
Authors
R.W. Seabloom, G.L. Pearson, L.W. Oring, J.R. Reilly