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
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
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
Lack of reproduction in muskoxen and arctic hares caused by early winter? Lack of reproduction in muskoxen and arctic hares caused by early winter?
A lack of young muskoxen (Ovibos moschatus) and arctic hares (Lepus arcticus) in the Eureka area of Ellesmere Island, Northwest Territories (now Nunavut), Canada, was observed during summer 1998, in contrast to most other years since 1986. Evidence of malnourished muskoxen was also found. Early winter weather and a consequent 50% reduction of the 1997 summer replenishment period appeared...
Authors
L. David Mech
The wolves of Minnesota: howl in the heartland The wolves of Minnesota: howl in the heartland
No abstract available.
Authors
L. David Mech
Delineation of sandhill crane subspecies Delineation of sandhill crane subspecies
No abstract available.
Authors
Douglas H. Johnson, J. E. Austin
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
Relationships of habitat patch size to predator community and survival of duck nests Relationships of habitat patch size to predator community and survival of duck nests
We studied duck nest success and predator community composition in relation to size of discrete patches of nesting cover in the Prairie Pothole Region (PPR) of the United States in 1993-95. We focused on nests in uplands that were seeded to perennial grasses and forbs and enrolled in the Conservation Reserve Program (CRP) in Minnesota, North Dakota, and South Dakota. We estimated daily...
Authors
M.A. Sovada, M.C. Zicus, R. J. Greenwood, D.P. Rave, W.E. Newton, R.O. Woodward, J.A. Beiser
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
Can Minnesota farmers do more to reduce wolf losses? Can Minnesota farmers do more to reduce wolf losses?
No abstract available.
Authors
L.D. Mech, E. K. Harper, T.J. Meier