Publications
This list of publications includes peer-review journal articles, official USGS publications series, reports and more authored by scientists in the Ecosystems Mission Area. A database of all USGS publications, with advanced search features, can be accessed at the USGS Publications Warehouse.
Filter Total Items: 41763
First records of Plethodon dunni in California and new distributional data on Ascaphus truei, Rhyacotriton olympicus, and Hydromantes shastae
No abstract available.
Authors
R. Bruce Bury, Gary M. Fellers, Steven B. Ruth
Yersinia philomiragia sp. n., a new member of the Pasteurella group of bacteria, naturally pathogenic for the muskrat (Ondatra zibethica)
A bacterium experimentally pathogenic for muskrats (Ondatra zibethica), white mice, mountain voles (Microtus montanus), and deer mice (Peromyscus maniculatus) was isolated from the tissues of a sick muskrat captured on the Bear River Migratory Bird Refuge (Brigham City, Utah) and from four surface water samples collected within 15 miles of that point. In culture, the cells are chiefly coccoid, but
Authors
W. I. Jensen, C.R. Owen, W.L. Jellison
Inorganic composition of gallbladder bile from fasted rainbow trout
Abstract has not been submitted
Authors
J. B. Hunn
Interaction of antimycin A and rotenone in fish bioassays
Abstract has not been submitted
Authors
R.M. Howland
Rapid method for filtration of marsh waters
No abstract available.
Authors
V. A. Adomaitis, J.A. Shoesmith
Build-up of grit in three pochard species in Manitoba
Abstract has not been submitted
Authors
J. C. Bartonek
Selective feeding by juvenile diving ducks in summer
Waterfowl often fail to use foods that seem plentiful to the investigator. The extent to which selective feeding or rejection of foods is a function of behavioral and morphological adaptations of the species, conditioned behavior of the individual, or individual preference for certain foods has not been appraised. The objectives of our study were to determine: (1) the extent of selective feeding a
Authors
J. C. Bartonek, J.J. Hickey
Waterfowl production in relation to grazing
A 4-year production study of upland nesting waterfowl on the Missouri Coteau area of North Dakota showed that pair numbers, nesting densities and nest success were generally reduced by grazing. It is suggested that cover removal such as regular grazing and mowing be discontinued on areas managed primarily for waterfowl production and that management practices which create dense rank cover be subst
Authors
L.M. Kirsch
Mallard hatching from an egg cracked by freezing
The eggs of early-nesting waterfowl in North Dakota are frequently exposed to subfreezing temperatures. Mallards (Anas platyrhynchos) and Pintail (Anas acuta), normally the first ducks to arrive in the spring, begin limited early nesting in min-April. Nighttime temperatures during this period frequently drop below freezing, and late spring blizzards are not unusual.
Authors
R. J. Greenwood
Nesting of the upland plover on the Missouri Coteau
Abstract has not been submitted
Authors
K.F. Higgins, H. F. Duebbert, R.B. Oetting