Skip to main content
U.S. flag

An official website of the United States government

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: 1952

Using known populations of pronghorn to evaluate sampling plans and estimators Using known populations of pronghorn to evaluate sampling plans and estimators

Although sampling plans and estimators of abundance have good theoretical properties, their performance in real situations is rarely assessed because true population sizes are unknown. We evaluated widely used sampling plans and estimators of population size on 3 known clustered distributions of pronghorn (Antilocapra americana). Our criteria were accuracy of the estimate, coverage of 95...
Authors
Kathy M. Kraft, Douglas H. Johnson, Jack M. Samuelson, Stephen H. Allen

Tundra swan habitat preferences during migration in North Dakota Tundra swan habitat preferences during migration in North Dakota

I studied tundra swan (Cygnus columbianus columbianus) habitat preference in North Dakota during autumn migration, 1988-89. Many thousand tundra swans stop in the Prairie Pothole region during autumn migration, but swan resource use has not been quantified. I examined habitat preference in relation to an index of sago pondweed (Potamogeton pectinatus) presence, extent of open water, and...
Authors
Susan L. Earnst

Population analysis Population analysis

No abstract available.
Authors
Douglas H. Johnson

A walk-in trap for nesting ducks A walk-in trap for nesting ducks

No abstract available.
Authors
N.J. Dietz, P.J. Bergmann, Lester D. Flake

Movements and habitat use of mallard broods in northeastern California Movements and habitat use of mallard broods in northeastern California

To increase recruitment of mallards (Anas platyrhynchos), wildlife managers must understand the habitat and space needs of mallard broods. During 1989-90, we examined the movements, home range, and habitat use of 27 radio-marked mallard broods on Lower Klamath National Wildlife Refuge, California. Twelve of the 27 broods made 22 relocation movements (>1,000 m in 24 hr) in the first week...
Authors
David M. Mauser, Susan I. Jarvi, David S. Gilmer

Variation in body mass of wild canvasback and redhead ducklings Variation in body mass of wild canvasback and redhead ducklings

We assessed variation in body mass of ducklings in single- and mixed-species broods of wild Canvasbacks (Aythya valisineria) and Redheads (Aythya americana) 20-50 days old. Body mass of canvasback ducklings was not affected by year and season (early vs. late hatch date) despite changes in water conditions. Mean body mass of male and female Canvasbacks did not differ in Class IIA but did...
Authors
Jane E. Austin, Jerome R. Serie

Survival of radio-marked mallard ducklings in northeastern California Survival of radio-marked mallard ducklings in northeastern California

Estimates of duckling survival are necessary to accurately assess recruitment of mallards (Anas platyrhynchos), yet few reliable estimates exist. During 1988-90, we estimated survival rates for 127 radio-marked mallard ducklings from 64 broods on Lower Klamath National Wildlife Refuge, California. In 1988, we restricted the survival estimate to the first 10 days post-hatch (S = 0.18, SE...
Authors
David M. Mauser, Robert L. Jarvis, David S. Gilmer

Wildlife habitat management on the northern prairie landscape Wildlife habitat management on the northern prairie landscape

The northern prairie landscape has changed dramatically within the past century as a result of settlement by Europeans. Natural ecosystems have been disrupted and wildlife populations greatly altered. Natural resource agencies control only limited areas within the landscape, which they cannot manage independently of privately owned lands. Wildlife managers need first to set quantifiable...
Authors
Douglas H. Johnson, Susan D. Haseltine, Lewis M. Cowardin
Was this page helpful?