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
Polychlorinated biphenyl interference in pesticide residue analysis
No abstract available.
Authors
W. L. Reichel
Evaluation of a hand-reared mallard release program in Maryland
No abstract available.
Authors
Vernon D. Stotts, A. D. Geis, G.V. Burger
Chlorinated hydrocarbons in the marine environment. A report prepared by the Panel on Monitoring Persistent Pesticides in the Marine Environment of the Committee on Oceanography
SUMMARY AND RECOMMENDATIONS : The oceans are an ultimate accumulation site for the persistent chlorinated hydrocarbons. As much as 25 percent of the DDT compounds produced to date may have been transferred to the sea. The amount of DDT compounds in the marine biota is estimated to be less than 0.1 percent of total production, yet this amount has produced a demonstrable impact upon the marine en
Authors
E.D. Goldberg, P. Butler, P. Meier, D. Menzel, G. Paulik, R. Risebrough, L. F. Stickel
Classification of natural ponds and lakes in the glaciated prairie region
The wetland classification system for the United States adopted by the Bureau of Sport Fisheries and Wildlife in 1953 is described by Martin et al (1953) and by Shaw and Fredine (1956). That classification has been followed by many biologists in recent years and is especially useful in categorizing in a general manner the wetlands throughout the country over a span of years. It has become appare
Authors
Robert E. Stewart, Harold A. Kantrud
Ecological factors affecting waterfowl production in the Saskatchewan Parklands
No abstract available.
Authors
Jerome H. Stoudt
Nesting by a yearling Canada goose
A free-flying Canada goose (Branta canadensis interior), known to be just under a year old, laid a clutch of four eggs at the Patuxent Wildlife Research Center. At least half of the 2-year-old females nest at Patuxent, and almost all of the 3-year-olds nest. As far as we know, this is the first record of nesting by a yearling Canada goose.
Authors
L. C. Hall, F. B. McGilvrey
Blood parasites of wood ducks
Examination of blood films from wood ducks (Aix sponsa) from several northeastern states revealed Haemoproteus, Leucocytozoon, Plasmodium and a typanosome. Haemoproteus occurred in all areas sampled and birds of the year from Massachusetts demonstrated the highest incidence during the last 2 weeks in August. Leucocytozoon was most prevalent in more northern areas. P. circumflexum and a trypanosome
Authors
C. M. Herman, J. O. Knisley, G. D. Knipling
DDE thins eggshells of captive American kestrels
EGGSHELL thinning in several species of raptorial and fish-eating birds, whose populations and/or reproductive success have declined dramatically in recent years, has been correlated with residues of DDE [1,1-dichloro-2,2-bis (p-chlorophenyl) ethylene] in their eggs1–3. DDE, a common metabolite of DDT [1,1,1-trichloro-2,2-bis(p-chlorophenyl) ethane] and a nearly universal contaminant in the food o
Authors
Stanley N. Wiemeyer, Richard D. Porter
Residues of O,P'-DDD and O,P'-DDT in brown pelican eggs and mallard ducks
No abstract available.
Authors
T. G. Lamont, George E. Bagley, W. L. Reichel