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: 41778
Organochlorine residues in eggs of loggerhead and green sea turtles nesting at Merritt Island, Florida--July and August, 1976
Eggs from nine clutches of loggerhead turtles (Caretta caretta) and two clutches of green turtles (Chelonia mydas) were collected as they were laid on Merritt Island, Florida. Eggs were incubated, frozen, and analyzed for organochlorines. Levels of DDE and PCB, the major contaminants, averaged less than 0.08 ppm in loggerhead eggs and were even lower in green turtle eggs. These concentrations are
Authors
D. R. Clark, A. J. Krynitsky
New black-crowned night heron colony found in Rhode Island
No abstract available.
Authors
T. W. Custer, J.E. Myers, C.C. Allin
Response of captive, breeding mallards to oiled water
No abstract available.
Authors
T. W. Custer, P.H. Albers
The influence of hunger on meal to pellet intervals in barred owls
1. Barred owls fed at a sub-maintenance (SM) level had significantly (P < 0.01) longer meal to pellet intervals (MPI)/g eaten/kg body weight (BW) than those fed at an above maintenance (AM) level; MPI/g per kg for owls fed at a maintenance (M) level was intermediate but significantly (P < 0.01) different from both SM and AM.2. During SM feeding, MPI/g per kg gradually increased.3. The proportion o
Authors
G.E. Duke, M.R. Fuller, B.J. Huberty
Distribution, species abundance, and nesting-site use of Atlantic coast colonies of herons and their allies
In 1975 and 1976, eight teams of investigators located 262 colonies of nesting herons and their allies along the Atlantic coast from Florida to Maine. Fourteen species were found in Florida, numbers decreasing to seven in Maine. Colonies censused in the extreme south and north of the study area were lower in number of species and number of adults than those in the intermediate area. More than 90%
Authors
Thomas W. Custer, Ronald G. Osborn, W.F. Stout
Wildlife hazards from Furadan 3G applications to rice in Texas
Mortality of birds, fish, frogs, crayfish, earthworms, and nontarget insects occurred in rice fields after treatments of Furadan 3G granules in 3 Texas counties in 1970 and 1973-75. Three western sandpipers (Ereunetes mauri), 1 pectoral sandpiper (Erolia melanotos), and 2 red-winged blackbirds (Agelaius phoeniceus) were found dead or moribund between 17 and 24 hours after treatment. Cricket frog
Authors
Edward L. Flickinger, K. A. King, W.F. Stout, M.M. Mohn
Situation report: Heavy DDT contamination at Wheeler National Wildlife Refuge
A DDT manufacturing plant that operated on the Redstone Arsenal near Huntsville, Alabama discharged DDT-Iaden effluent from 1947 to 1970 into a creek on Wheeler National Wildlife Refuge. Seven to 9 years after the plant closed, high DDT, DDE, and DDD levels were reported in soils, river sediments, and fish in the area. Eleven of 27 mallards (Anas platyrhynchos) collected on the Refuge during Febru
Authors
W. J. Fleming, T.Z. Atkeson
Aldrin persists in yellow mud turtle
No abstract available.
Authors
Edward L. Flickinger, B. M. Mulhern
Quantification of petroleum-type hydrocarbons in avian tissue
Methods were developed for the analysis of 16 hydrocarbons in avian tissue. Mechanical extraction with pentane was followed by clean-up on Florisil and Silicar. Residues were determined by gas—liquid chromatography and gas—liquid, chromatography—mass spectrometry. The method was applied to the analysis of liver, kidney, fat, and brain tissue of mallard ducks (Anas platyrhynchos) fed a mixture of h
Authors
M. L. Gay, A. A. Belisle, J.F. Patton
Toxic effects of endrin and toxaphene on the southern leopard frog Rana sphenocephala
Eggs, larvae and sub-adults of the southern leopard frog Rana sphenocephala were exposed to endrin and toxaphene. Exposure was in water by a continuous-flow technique, following standards that have been used successfully in the study of fish and invertebrates. R. sphenocephala is more sensitive to both pesticides than are higher vertebrates but is slightly less sensitive than fish. Eggs seem to be
Authors
R.J. Hall, D. Swineford
An improved web tagging technique for waterfowl
No abstract available.
Authors
G. M. Haramis, A. Nice