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
Relationship of bull fertility to sperm nuclear shape
The relationship between sperm nuclear shape and bull fertility was determined. Two groups of bulls, 3 per group, were selected. Bulls differed in fertility based on lifetime nonreturn rates. Digital images of propidium iodide-stained sperm from each bull were collected and shape-evaluated by Fourier harmonic amplitudes 0 to 5. A discriminant function (P < .05) was constructed based on harmonic am
Authors
G.C. Ostermeier, G.A. Sargeant, B.S. Yandell, J.J. Parrish
Stream macroinvertebrate biomonitoring for Agate Fossil Beds National Monument: 1989-1999
No abstract available.
Authors
W.M. Rizzo
Stream macroinvertebrate biomonitoring for Pipestone National Monument 1989-1999: status report
No abstract available.
Authors
W.M. Rizzo
Stream macroinvertebrate biomonitoring report for Homestead National Monument of America, 1989-1999: status report
No abstract available.
Authors
W.M. Rizzo
Stream macroinvertebrate biomonitoring for Wilson's Creek National Battlefield 1989-1999: status report
No abstract available.
Authors
W.M. Rizzo
International endeavor in response to global climate change
No abstract available.
Authors
F. Gao, Q. Guo
A comprehensive review of observational and site evaluation data of migrant whooping cranes in the United States, 1943-1999
This report is a comprehensive analysis of existing observational data (1943–99) and site evaluation data (1977–99) for locations used by whooping cranes (Grus americana) during migration through the United States portion of the Wood Buffalo–Aransas flyway. The apparent migration path, as outlined by the distribution of whooping crane observations, is very similar to that delineated in earlier rep
Authors
Jane E. Austin, Amy L. Richert
Coefficients of conservatism for the vascular flora of the Dakotas and adjacent grasslands
Floristic quality assessment can be used to identity natural areas, to facilitate comparisons among different sites, to provide long-term monitoring of natural area quality, and to evaluate habitat management and restoration efforts. To facilitate the use of floristic quality assessment in North Dakota, South Dakota (excluding the Black Hills), and adjacent grasslands, we developed a species list
Authors
Nutritional consequences of gastrolith ingestion in blue-winged teal: a test of the hard-seed-for-grit hypothesis
Abstract has not been submitted
Authors
M. H. Sherfy, R. L. Kirkpatrick, K. E. Webb
Frequency of egg and nestling destruction by female brown-headed cowbirds at grassland nests
Researchers have suggested that Brown-headed Cowbirds (Molothrus ater) destroy nest contents of potential hosts to induce renesting and thus enhance future opportunities for parasitism. Although cowbird destruction of passerine nests has been witnessed and surmised, few data are available on frequency of those events. We used miniature video-cameras at nests of grassland passerines and documented
Authors
Diane A. Granfors, Pamela J. Pietz, Lisa A. Joyal
Estimated areal extent of colonies of black-tailed prairie dogs in the northern Great Plains
During 1997–1998, we undertook an aerial survey, with an aerial line-intercept technique, to estimate the extent of colonies of black-tailed prairie dogs (Cynomys ludovicianus) in the northern Great Plains states of Nebraska, North Dakota, South Dakota, and Wyoming. We stratified the survey based on knowledge of colony locations, computed 2 types of estimates for each stratum, and combined ratio e
Authors
John G. Sidle, Douglas H. Johnson, Betty R. Euliss