Deborah Buhl (Former Employee)
Science and Products
Filter Total Items: 34
Influence of trees in the landscape on parasitism rates of grassland passerine nests in Southeastern North Dakota Influence of trees in the landscape on parasitism rates of grassland passerine nests in Southeastern North Dakota
Woody vegetation has been linked to increased rates of Brown-headed Cowbird (Molothrus ater) parasitism for some grassland hosts. In northern North Dakota, however, studies reported that parasitism of grassland passerine nests was lower in landscapes with trees than in those without trees. We looked for evidence of this pattern elsewhere, using data from two studies conducted on the...
Authors
Pamela J. Pietz, Deborah A. Buhl, Jill A. Shaffer, Maiken Winter, Douglas H. Johnson
Fat dynamics of arctic-nesting sandpipers during spring in mid-continental North America Fat dynamics of arctic-nesting sandpipers during spring in mid-continental North America
We measured fresh body mass, total body fat, and fat-free dry mass (FFDM) of three species of Arctic-nesting calidrid sandpipers (Baird's Sandpiper [Calidris bairdii], hereafter “BASA”; Semipalmated Sandpiper [C. pusilla], hereafter “SESA”; and White-rumped Sandpiper [C. fuscicollis], hereafter “WRSA”) during spring stopovers in the Prairie Pothole Region (PPR) of North Dakota, and...
Authors
Gary L. Krapu, J.L. Eldridge, C. L. Gratto-Trevor, D. A. Buhl
Factors influencing soil invertebrate communities in riparian grasslands of the central platte river floodplain Factors influencing soil invertebrate communities in riparian grasslands of the central platte river floodplain
In the Platte River Valley of central Nebraska, USA, riparian grasslands (also known as wet meadows) have been severely impacted by a reduction in river flows, causing lower ground-water levels and altered seasonal hydroperiods. The potential impacts of these hydrologic changes, as well as the environmental factors that influence wet meadow soil invertebrate communities, are not well...
Authors
C.A. Davis, J. E. Austin, D. A. Buhl
Wetlands and use by breeding waterfowl in the National Grasslands: Grand River National Grasslands, South Dakota, and McKenzie District of the Little Missouri National Grasslands, North Dakota Wetlands and use by breeding waterfowl in the National Grasslands: Grand River National Grasslands, South Dakota, and McKenzie District of the Little Missouri National Grasslands, North Dakota
No abstract available.
Authors
J. E. Austin, D. A. Buhl
Evaluating the impacts of white-tailed deer (Odocoileus virginianus) on vegetation within Pea Ridge National Military Park Evaluating the impacts of white-tailed deer (Odocoileus virginianus) on vegetation within Pea Ridge National Military Park
No abstract available.
Authors
Keith W. Grabner, Matthew Struckhoff, Deborah A. Buhl
Effects of water conditions on clutch size, egg volume, and hatchling mass of mallards and gadwalls in the Prairie Pothole Region Effects of water conditions on clutch size, egg volume, and hatchling mass of mallards and gadwalls in the Prairie Pothole Region
We examined the relationship between local water conditions (measured as the percent of total area of basins that was covered by water) and clutch size, egg volume, and hatchling mass of Mallards (Anas platyrhynchos) and Gadwalls (A. strepera) on four study sites in the Prairie Pothole Region of North Dakota and Minnesota, 1988-1994. We also examined the relationship between pond density...
Authors
Pamela J. Pietz, Gary L. Krapu, Deborah A. Buhl, David A. Brandt
Effects of water conditions on clutch size, egg volume, and hatchling mass of mallards and gadwalls in the Prairie Pothole Region Effects of water conditions on clutch size, egg volume, and hatchling mass of mallards and gadwalls in the Prairie Pothole Region
We examined the relationship between local water conditions (measured as the percent of total area of basins covered by water) and clutch size, egg volume, and hatchling mass of Mallards (Anas platyrhynchos) and Gadwalls (A. strepera) on four study sites in the Prairie Pothole Region of North Dakota and Minnesota, 1988–1994. We also examined the relationship between pond density and...
Authors
P.J. Pietz, Gary L. Krapu, D. A. Buhl, D.A. Brandt
Foods and foraging of prairie striped skunks during the avian nesting season Foods and foraging of prairie striped skunks during the avian nesting season
Food habits of prairie skunks are not well understood, yet such knowledge might provide insight into factors influencing nest depredation. We studied food habits of radiocollared adult striped skunks (Mephitis mephitis) during 1976-78 in North Dakota, where skunks are regarded as important predators of ground-nesting birds. Plant foods, primarily grain and sunflower seeds, occurred in a...
Authors
R. J. Greenwood, A.B. Sargeant, J.L. Piehl, D. A. Buhl, B.A. Hanson
Behaviour patterns of Mallard Anas Platyrhynchos pairs and broods in Minnesota and North Dakota Behaviour patterns of Mallard Anas Platyrhynchos pairs and broods in Minnesota and North Dakota
Few studies have quantitatively examined Mallard behaviour in North America during the breeding season. We estimated diurnal time budgets of unmarked Mallard males, females, and broods from over 1,200 hours of observations at two study areas in western Minnesota and south-central North Dakota during 1988-91. Paired males spent less time feeding and more time alert than did females. Both...
Authors
P.J. Pietz, D. A. Buhl
Modified transmitter attachment method for adult ducks Modified transmitter attachment method for adult ducks
The value of radio telemetry for waterfowl research depends on the availability of suitable methods of attaching transmitters. In previous studies, external transmitters attached to adult Mallards (Anas platyrhynchos) with sutures and glue did not stay on birds reliably. In an attempt to improve transmitter retention, a method of attachment was tested in which 4-g transmitters were...
Authors
P.J. Pietz, D.A. Brandt, Gary L. Krapu, D. A. Buhl
Science and Products
Filter Total Items: 34
Influence of trees in the landscape on parasitism rates of grassland passerine nests in Southeastern North Dakota Influence of trees in the landscape on parasitism rates of grassland passerine nests in Southeastern North Dakota
Woody vegetation has been linked to increased rates of Brown-headed Cowbird (Molothrus ater) parasitism for some grassland hosts. In northern North Dakota, however, studies reported that parasitism of grassland passerine nests was lower in landscapes with trees than in those without trees. We looked for evidence of this pattern elsewhere, using data from two studies conducted on the...
Authors
Pamela J. Pietz, Deborah A. Buhl, Jill A. Shaffer, Maiken Winter, Douglas H. Johnson
Fat dynamics of arctic-nesting sandpipers during spring in mid-continental North America Fat dynamics of arctic-nesting sandpipers during spring in mid-continental North America
We measured fresh body mass, total body fat, and fat-free dry mass (FFDM) of three species of Arctic-nesting calidrid sandpipers (Baird's Sandpiper [Calidris bairdii], hereafter “BASA”; Semipalmated Sandpiper [C. pusilla], hereafter “SESA”; and White-rumped Sandpiper [C. fuscicollis], hereafter “WRSA”) during spring stopovers in the Prairie Pothole Region (PPR) of North Dakota, and...
Authors
Gary L. Krapu, J.L. Eldridge, C. L. Gratto-Trevor, D. A. Buhl
Factors influencing soil invertebrate communities in riparian grasslands of the central platte river floodplain Factors influencing soil invertebrate communities in riparian grasslands of the central platte river floodplain
In the Platte River Valley of central Nebraska, USA, riparian grasslands (also known as wet meadows) have been severely impacted by a reduction in river flows, causing lower ground-water levels and altered seasonal hydroperiods. The potential impacts of these hydrologic changes, as well as the environmental factors that influence wet meadow soil invertebrate communities, are not well...
Authors
C.A. Davis, J. E. Austin, D. A. Buhl
Wetlands and use by breeding waterfowl in the National Grasslands: Grand River National Grasslands, South Dakota, and McKenzie District of the Little Missouri National Grasslands, North Dakota Wetlands and use by breeding waterfowl in the National Grasslands: Grand River National Grasslands, South Dakota, and McKenzie District of the Little Missouri National Grasslands, North Dakota
No abstract available.
Authors
J. E. Austin, D. A. Buhl
Evaluating the impacts of white-tailed deer (Odocoileus virginianus) on vegetation within Pea Ridge National Military Park Evaluating the impacts of white-tailed deer (Odocoileus virginianus) on vegetation within Pea Ridge National Military Park
No abstract available.
Authors
Keith W. Grabner, Matthew Struckhoff, Deborah A. Buhl
Effects of water conditions on clutch size, egg volume, and hatchling mass of mallards and gadwalls in the Prairie Pothole Region Effects of water conditions on clutch size, egg volume, and hatchling mass of mallards and gadwalls in the Prairie Pothole Region
We examined the relationship between local water conditions (measured as the percent of total area of basins that was covered by water) and clutch size, egg volume, and hatchling mass of Mallards (Anas platyrhynchos) and Gadwalls (A. strepera) on four study sites in the Prairie Pothole Region of North Dakota and Minnesota, 1988-1994. We also examined the relationship between pond density...
Authors
Pamela J. Pietz, Gary L. Krapu, Deborah A. Buhl, David A. Brandt
Effects of water conditions on clutch size, egg volume, and hatchling mass of mallards and gadwalls in the Prairie Pothole Region Effects of water conditions on clutch size, egg volume, and hatchling mass of mallards and gadwalls in the Prairie Pothole Region
We examined the relationship between local water conditions (measured as the percent of total area of basins covered by water) and clutch size, egg volume, and hatchling mass of Mallards (Anas platyrhynchos) and Gadwalls (A. strepera) on four study sites in the Prairie Pothole Region of North Dakota and Minnesota, 1988–1994. We also examined the relationship between pond density and...
Authors
P.J. Pietz, Gary L. Krapu, D. A. Buhl, D.A. Brandt
Foods and foraging of prairie striped skunks during the avian nesting season Foods and foraging of prairie striped skunks during the avian nesting season
Food habits of prairie skunks are not well understood, yet such knowledge might provide insight into factors influencing nest depredation. We studied food habits of radiocollared adult striped skunks (Mephitis mephitis) during 1976-78 in North Dakota, where skunks are regarded as important predators of ground-nesting birds. Plant foods, primarily grain and sunflower seeds, occurred in a...
Authors
R. J. Greenwood, A.B. Sargeant, J.L. Piehl, D. A. Buhl, B.A. Hanson
Behaviour patterns of Mallard Anas Platyrhynchos pairs and broods in Minnesota and North Dakota Behaviour patterns of Mallard Anas Platyrhynchos pairs and broods in Minnesota and North Dakota
Few studies have quantitatively examined Mallard behaviour in North America during the breeding season. We estimated diurnal time budgets of unmarked Mallard males, females, and broods from over 1,200 hours of observations at two study areas in western Minnesota and south-central North Dakota during 1988-91. Paired males spent less time feeding and more time alert than did females. Both...
Authors
P.J. Pietz, D. A. Buhl
Modified transmitter attachment method for adult ducks Modified transmitter attachment method for adult ducks
The value of radio telemetry for waterfowl research depends on the availability of suitable methods of attaching transmitters. In previous studies, external transmitters attached to adult Mallards (Anas platyrhynchos) with sutures and glue did not stay on birds reliably. In an attempt to improve transmitter retention, a method of attachment was tested in which 4-g transmitters were...
Authors
P.J. Pietz, D.A. Brandt, Gary L. Krapu, D. A. Buhl