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: 41756
Molting of northern yellow-throat in southern Michigan
During the summer of 1938, detailed studies were made of the molts of the Northern Yellow-throat, Geothlypis trichas brachidactyla, in southern Michigan. Observations of the post-natal molt were made each day on nestlings found near Geddes Pond, one mile east of Ann Arbor. Studies of the post-juvenal and post-nuptial molts were from fresh specimens collected at Portage Lake in Jackson County.
Authors
R. E. Stewart
Fur productivity of submarginal farmland
A submarginal tract of a thousand acres on the Patuxent Research Refuge, Laurel, Maryland, was trapped for three seasons (1943-46) to determine the fur-productivity of the area. The tract yielded 392 fur animals, the pelts of which were sold at public auction for $1119.00. This resulted in an average income from trapping of approximately forty cents per acre per year. The habitats most prod
Authors
F.M. Uhler, L. M. Llewellyn
Reducing wildlife hazards in Dutch elm disease control
No abstract available.
Authors
H.P. Blagbrough
Procedure for the analysis of zinc phosphide rodenticides
No abstract available.
Authors
E. Bellack, J.B. DeWitt
Sex ratios in pheasant research and management
Sex ratios are of primary importance in interpretation of extensive studies of pheasant populations. They are necessary for converting crowing-cock indices to population estimates even where annual trends are to be studied in the same area. Reliability of population estimates from hunting season kill of pheasants suffers primarily from inability to estimate sex ratios accurately. Fall sex ra
Authors
F.H. Dale
Venomous Snakes of the United States and Treatment of Their Bites
No abstract available.
Authors
W. H. Stickel
Investigations of methods of determining abundance of breeding mourning doves in certain eastern states
A call count over a 20 mile route (beginning 1/2 hour before local official sunrise and with 20 stops of 3 minutes duration 1 mile apart) gives a more practical index to the abundance of mourning doves in the breeding season than roadside counts and area population studies tried in 1950. Calling activities showed relatively high peaks and low depressions during April and May of 1951, with a plate
Authors
A.J. Duvall, C.S. Robbins
Census of woodcock breeding population in vicinity of Patuxent Refuge, Maryland in 1951
No abstract available.
Authors
R. E. Stewart