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: 41920
Upland sandpiper nesting and management in North Dakota
Nests of 195 upland sandpipers (Bartramia longicauda) on the Missouri Coteau of North Dakota generally were well concealed by grassy vegetation which ranged from 15.4-30.8 cm in height. Nest densities ranged from 0.3 per 40.5 ha on annually tilled croplands to 6.8 per 40.5 ha on native grasslands during the second growing season after a prescribed burn. Hatching success in native grasslands varied
Authors
L.M. Kirsch, K.F. Higgins
Diurnal use of small wetlands by ducks
Abstract has not been submitted
Authors
A.T. Klett, L.M. Kirsch
Plasma luteinizing hormone and the development of ovarian follicles after loss of clutch in female mallards (Anas platyrhynchos)
The plasma level of LH and the extent of development of ovarian follicles were analyzed in incubating female Mallards. In both wild and game-farm stock, incubation was associated with a significant decline in plasma levels of LH from those of laying females. Within 1 day after removal of eggs, LH levels had increased to levels indistinguishable from those of laying females. The mean diameter of th
Authors
R.S. Donham, C.W. Dane, D. S. Farner
Experimental responses of mallards and Canada geese to tribromoethanol
Abstract has not been submitted
Authors
G.L. Krapu
Cardinal and mockingbird in Jamestown, North Dakota
Abstract has not been submitted
Authors
D. H. Johnson, J.E. Johnson
Duck nesting in fields of undisturbed grass-legume cover
A study of dabbling duck (Anatinae) nesting was conducted during 1971-73 on nine 12- to 54-ha Cropland Adjustment Program fields in the prairie pothole region of north-central South Dakota. The tall, dense vegetation was comprised of introduced cool-season grasses and legumes, primarily smooth bromegrass (Bromus inermis), intermediate wheatgrass (Agropyron intermedium), and alfalfa. Complexes of t
Authors
H. F. Duebbert, J. T. Lokemoen
Restoration of the giant Canada goose in North Dakota
Abstract has not been submitted
Authors
F.B. Lee, L.J. Schoonover, J.A. Cooper, M. Johnson
Feeding ecology of breeding gadwalls on saline wetlands
The feeding ecology of breeding gadwalls (Anas strepera) from saline wetlands in North Dakota was examined in relation to sex, pair mates, reproductive status, food availability, and wetland type during the spring and summer of 1971 and 1972. Esophagi of males and females contained 40.4 and 48.2 percent animal food, respectively, between 17 April and 25 August. Animal foods consumed by paired fema
Authors
J.R. Serie, G.A. Swanson
Spring mortality of insectivorous birds in southern Manitoba
Abstract has not been submitted
Authors
J.R. Serie, R. E. Jones
Ferruginous hawk nesting ecology and raptor populations in northern South Dakota
No abstract available.
Authors
J. T. Lokemoen, H. F. Duebbert