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: 1964
Human disturbances of waterfowl: causes, effects, and management Human disturbances of waterfowl: causes, effects, and management
Human disturbances of waterfowl can be intentional or unintentional. They may result from overt or directed activities or may be ancillary to activities not initially thought to be of concern to birds. Some of these disturbances are manifested by alertness, fright (obvious or inapparent), flight, swimming, disablement, or death. Therefore, persons responsible for waterfowl management...
Authors
C. E. Korschgen, R.B. Dahlgren
Human disturbances of waterfowl: An annotated bibliography Human disturbances of waterfowl: An annotated bibliography
The expansion of outdoor recreation greatly increased the interaction between the public, waterfowl, and waterfowl habitat. The effects of these interactions on waterfowl habitats are visible and obvious, whereas the effects of interactions that disrupt the normal behavior of waterfowl are subtle and often overlooked, but perhaps no less harmful than destruction of habitat. Resource...
Authors
R.B. Dahlgren, C. E. Korschgen
An evaluation of regression methods to estimate nutritional condition of canvasbacks and other water birds An evaluation of regression methods to estimate nutritional condition of canvasbacks and other water birds
Regression equations that use mensural data to estimate body condition have been developed for several water birds. These equations often have been based on data that represent different sexes, age classes, or seasons, without being adequately tested for intergroup differences. We used proximate carcass analysis of 538 adult and juvenile canvasbacks (Aythya valisineria ) collected during...
Authors
D. W. Sparling, J.A. Barzen, J.R. Lovvorn, J.R. Serie
Northern Prairie Wildlife Research Center: a focus on waterfowl research Northern Prairie Wildlife Research Center: a focus on waterfowl research
No abstract available at this time
Authors
R.E. Kirby, D.S. Gilmer
Survival and other observations of adult female northern pintails molting in California Survival and other observations of adult female northern pintails molting in California
No abstract available.
Authors
M. R. Miller, J. P. Fleskes, D.L. Orthmeyer, D.S. Gilmer
Survival and other observations of adult female northern pintails molting in California Survival and other observations of adult female northern pintails molting in California
Survival rates of nine adult female Northern Pintails (Anas acuta) that became flightless after being radio-marked in the Sacramento Valley, California in August 1987-1989 were estimated. Seven of the radio-marked pintails molted in the Sacramento Valley, a nontraditional molting region, and two flew 280 km north to the Klamath Basin to molt. Molting marshes were dominated by emergent...
Authors
M. R. Miller, J. P. Fleskes, D.L. Orthmeyer, D.S. Gilmer
Nesting waterfowl and water birds on natural islands in the Dakotas and Montana Nesting waterfowl and water birds on natural islands in the Dakotas and Montana
No abstract available.
Authors
John T. Lokemoen, Robert O. Woodward
Northern Prairie Wildlife Research Center. A focus for waterfowl research Northern Prairie Wildlife Research Center. A focus for waterfowl research
Abstract has not been submitted
Authors
R.E. Kirby, D.S. Gilmer
Nest and nest site characteristics of some ground-nesting, non-passerine birds of northern grasslands Nest and nest site characteristics of some ground-nesting, non-passerine birds of northern grasslands
We summarized biological and ecologic characteristics of 2490 nests of 16 species of upland-nesting, non-passerine birds of northern grasslands found during 1963 through 1991. Nest initiation and hatch dates, clutch sizes, nest fates, causes of failure, success rates of nests among major habitat types and land uses, and vegetation measurements at nest sites are analyzed.
Authors
Harold A. Kantrud, Kenneth F. Higgins
Does supplemental feeding of red squirrels change population density, movements, or both? Does supplemental feeding of red squirrels change population density, movements, or both?
Supplemental feeding increased the number of red squirrels (Tamiasciurus hudsonicus) captured on two trapping grids, leading Sullivan (Journal of Mammalogy, 71:579–590, 1990) to infer that the population density of residents had increased. This conclusion is questionable because the residency status of captured squirrels was unknown.
Authors
Rolf R. Koford
Application of a computer simulation model to migrating white-fronted geese in the Klamath Basin Application of a computer simulation model to migrating white-fronted geese in the Klamath Basin
The Pacific greater white-fronted goose (Anser albifrons) population has declined precipitously over the past 20 years. Loss of wetland habitat in California wintering areas has had a significant effect on the population, so recovery of the population may depend on innovative management of the few remaining wetlands. A computer simulation model, REFMOD, was applied to greater white...
Authors
R.B. Frederick, William R. Clark, John Y. Takekawa
Breeding population inventories and measures of recruitment Breeding population inventories and measures of recruitment
In this chapter we review the techniques used to measure two important parameters of waterfowl populations, size of breeding population and recruitment. If waterfowl are to be managed toward goals defined in terms of population sizes such as those in the recently signed North American Waterfowl Management Plan (U.S. Fish and Wildlife Service [USFWS] and Canadian Wildlife Service [CWS]...
Authors
L.M. Cowardin, R.J. Blohm