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: 1907
The role of nutrient reserves in mallard reproduction
Mallard (Anas platyrhynchos) populations breeding in temperate North America obtain a significant part of the energy and lipid requirements of reproduction at sites occupied prior to arrival on the breeding grounds. Protein for egg formation, however, is obtained principally from the diet during the nesting period. Both sexes arrive heavy and fat in North Dakota but experience substantial weight l
Authors
Gary L. Krapu
Observations on black-crowned night heron breeding success in a North Dakota marsh
Storms and mammalian predation severely reduced production in a Black-crowned Night Heron (Nycticorax nycticorax) colony in two years and drought prevented nesting in two other years from 1976 to 1980. Maximum estimated production was 2.2 young per pair in 1978, the only year production was sufficient to maintain the population.
Authors
R. J. Greenwood
Breeding birds on waterfowl production areas in northeastern North Dakota
Abstract has not been submitted
Authors
H. F. Duebbert
Seasonal abundance and behavior of black brant (Branta bernicla nigricans) on Humbolt Bay, California
Abstract has not been submitted
Authors
W.G. Henry, P. F. Springer
Grazing intensity effects on the breeding avifauna of North Dakota native grasslands
A breeding bird census and plant survey was conducted on 180 samples of lightly, moderately, and heavily grazed and hayed native grasslands in North Dakota in 1974. The ten most important cover plants on each of eight major physiographic landforms in three of the four regions (the Agassiz Lake Plain excluded) overlapped so extensively that only 19 species were involved: 13 grasses or sedges, four
Authors
H.A. Kantrud
Recuperation from crippling in ducks
No abstract available.
Authors
Ronald E. Kirby, J. H. Riechmann, T. W. Schoenfelder
Characteristics of central North Dakota wetlands determined from sample aerial photographs and ground study
Wetland characteristics were assessed from a systematic sample of 66 plots, 3.22 km2 each, drawn from a 10,041-km2 study area in central North Dakota. Each plot was visited once and 8 sets of aerial photographs were obtained in 3 years. Density of wetland basins was 11.00 ha/km2, and area averaged 9.7 ha/km2. Seasonal and temporary wetlands were most abundant; semipermanent wetlands occupied the g
Authors
L.M. Cowardin, D.S. Gilmer, L.M. Mechlin
Determination of age and whelping dates of live red fox pups
Abstract has not been submitted
Authors
A. B. Sargeant, S.H. Allen, D. H. Johnson
The winter season - Northern Great Plains
This winter was hardly a winter by usual standards. At Grand Forks six record highs were set in February, a month which averaged 11°F above normal, and a -20° reading was not recorded the entire season for the first time in 50 years. Fort Peck Lake in Montana finally iced over February 12, only to begin reopening three days later (CMC). Temperatures reached into the 70s in South Dakota and that st
Authors
David O. Lambeth, Craig A. Faanes