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: 1930
Delineation of sandhill crane subspecies Delineation of sandhill crane subspecies
No abstract available.
Authors
Douglas H. Johnson, J. E. Austin
Holocene climate in the western Great Lakes national parks and lakeshores: Implications for future climate change Holocene climate in the western Great Lakes national parks and lakeshores: Implications for future climate change
We reconstruct Holocene climate history (last 10,000 years) for each of the U.S. National Park Service units in the western Great Lakes region in order to evaluate their sensitivity to global warming. Annual precipitation, annual temperature, and July and January temperatures were reconstructed by comparing fossil pollen in lake sediment with pollen in surface samples, assuming that...
Authors
Margaret Davis, Christine Douglas, K.L. Cole, Marge Winkler, Robyn Flaknes
Prolonged winter undernutrition and the interpretation of urinary allantoin:creatinine ratios in white-tailed deer Prolonged winter undernutrition and the interpretation of urinary allantoin:creatinine ratios in white-tailed deer
The urinary allantoin:creatinine (A:C) ratio (expressed in micromoles of allantoin to micromoles of creatinine) has shown potential as an index of recent winter energy intake in preliminary controlled studies of elk (Cervus elaphus) involving mild condition deterioration (up to 11% loss of body mass). To ensure reliable nutritional assessments of free-ranging cervids by measuring A:C...
Authors
Glenn D. DelGiudice, Ken D. Kerr, L. David Mech, Ulysses S. Seal
Declines of greater and lesser scaup populations: issues, hypotheses, and research needs Declines of greater and lesser scaup populations: issues, hypotheses, and research needs
The population estimate for greater (Aythya marila) and lesser (Aythya affinis) scaup (combined) has declined dramatically since the early 1980s to record lows in 1998. The 1998 estimate of 3.47 million scaup is far below the goal of 6.3 million set in the North American Waterfowl Management Plan (NAWMP), causing concern among biologists and hunters. We summarize issues of concern...
Authors
J. E. Austin, A. D. Afton, M.G. Anderson, R. G. Clark, Christine M. Custer, J. Lawrence, J.B. Pollard, J.K. Ringelman
Weather monitoring protocol for two prairie parks Weather monitoring protocol for two prairie parks
No abstract available.
Authors
F.A. Akyuz, P. Guinan, G.D. Willson
The North American Reporting Center for Amphibian Malformations The North American Reporting Center for Amphibian Malformations
No abstract available.
Authors
Douglas H. Johnson, S.C. Fowle, J.A. Jundt
Predictable interregional movements by female northern pintails during winter Predictable interregional movements by female northern pintails during winter
Factors influencing initiation of regional and interregional movements by nonbreeding ducks are poorly understood, especially during winter. During winters 1990-1991 through 1992-1993, we radiotagged 347 female Northern Pintails (Anas acuta) in southwestern Louisiana and monitored their movements to three regions: (1) the Gulf Coast Region of Louisiana and Texas (outside of southwestern...
Authors
R. R. Cox, A. D. Afton
Effects of temperature anomalies on the Palmer Drought Severity Index in the central United States Effects of temperature anomalies on the Palmer Drought Severity Index in the central United States
The purpose of this study is to improve our understanding of temperature and precipitation effects on the Palmer Drought Severity Index (PDSI). Both theoretical and observational analyses were applied to separate and compare temperature and precipitation effects on PDSI. The results showed that because of the dependence of PDSI on the ‘climatologically appropriate rainfall’, which is a...
Authors
Qi Hu, Gary D. Willson
Grassland bird use of Conservation Reserve Program Fields in the Great Plains Grassland bird use of Conservation Reserve Program Fields in the Great Plains
The area enrolled in the Conservation Reserve Program in the Great Plains is enormous: nearly 18 million acres, or more than 7 million hectares, in Montana, North Dakota, South Dakota, Wyoming, Nebraska, Colorado, Kansas, Oklahoma, and Texas. This change in land use has had a huge influence on grassland bird populations. Many, but certainly not all, grassland species flourish in CRP...
Authors
Douglas H. Johnson
Leadership in wolf, Canis lupus, packs Leadership in wolf, Canis lupus, packs
I examine leadership in Wolf (Canis lupus) packs based on published observations and data gathered during summers from 1986 to 1998 studying a free-ranging pack of Wolves on Ellesmere Island that were habituated to my presence. The breeding male tended to initiate activities associated with foraging and travel, and the breeding female to initiate, and predominate in, pup care and...
Authors
L. David Mech
The Minnesota wolf: from endangered to recovered The Minnesota wolf: from endangered to recovered
No abstract available.
Authors
L.D. Mech