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
The brown pelican and certain environmental pollutants in Louisiana
No abstract available.
Authors
L. J. Blus, T. Joanen, A. A. Belisle, R. M. Prouty
Effects of methylmercury on approach and avoidance behavior of mallard ducklings
Mallard ducks were fed a control diet or a diet containing 0.5 or 3 ppm mercury (as methylmercury dicyandiamide) based on the dry feed. These mercury diets are approximately equivalent to 0.1 and 0.6 ppm mercury in a natural succulent diet. I measured for the ducklings the approach behavior in response to a tape-recorded maternal call and the avoidance of a frightening stimulus....There were no si
Authors
G. H. Heinz
DDD poisoning in a loon and the identification of the hydroxylated form of DDD
No abstract available.
Authors
R. M. Prouty, J.E. Peterson, L. N. Locke, B. M. Mulhern
Cholinesterase (ChE) response and related mortality among birds fed ChE inhibitors
Patterns of mortality and inhibition of brain and plasma ChE in birds treated with ChE inhibitors were studied in an attempt to determine the validity of using ChE activity as a monitoring and diagnostic technique. Analysis of brain ChE activity proved to be reliable for diagnosing and monitoring effects of selected ChE inhibitors in birds. Brain ChE inhibition exceeding 20% indicated exposure, an
Authors
J. Larry Ludke, Elwood F. Hill, Michael P. Dieter
Monitoring regional effects of high pressure injection of wastewater in a limestone aquifer
More than 10 billion gallons (38 × 106 m3) of acid industrial liquid waste has been injected in about 11 years under high pressure into a saline-water-filled part of a limestone aquifer of low transmissivity between 1,400 and 1,700 feet (430 and 520 m) below land surface near Pensacola, Florida. A similar waste disposal system is planned for the same zone at a site about 8.5 miles (13.7 km) to the
Authors
Glen L. Faulkner, Charles A. Pascale
Detection and transmission of infectious hematopoietic necrosis virus in rainbow trout
Detection and transmission of Infectious Hematopoietic Necrosis Virus in rainbow trout (Salmo gairdneri) was studied at a commercial trout hatchery. Transmission of virus was demonstrated via water, feed and contaminated eggs. If eggs from carrier females were incubated several weeks in virus-free water, the resulting fry did not become infected. However, if fry subsequently became infected they w
Authors
Donald F. Amend
Studies of reptiles in Rock Valley
No abstract available at this time
Authors
P.A. Medica, F.B. Turner
Disease prevention and control in closed systems
Abstract not submitted to date
Authors
F. P. Meyer, J.W. Warren
Laboratory efficacy of 3-trifluoromethyl-4-nitrophenol (TFM) as a lampricide
Abstract not submitted to date
Authors
V. K. Dawson, K.B. Cumming, P.A. Gilderhus
Toxicity of the lampricide 3-trifluoromethyl-4-nitrophenol (TFM) to selected aquatic invertebrates and frog larvae
Abstract not submitted to date
Authors
J.H. Chandler, L. L. Marking
Development and evaluation of on-site toxicity test procedures for fishery investigations
Abstract not submitted to date
Authors
R.M. Burress
Changes in the lake trout population of southern Lake Superior in relation to the fishery, the sea lamprey, and stocking, 1950-70
Commercial catch and effort statistics for 1929-70, samples of commercial catches in 1959-62, and records of examinations of all lake trout (Salvelinus namaycush) taken commercially in inshore waters of Michigan and Wisconsin in 1962-70 were the basis for descriptions of changes in the population in 1929-70.
Abundance fluctuated cyclically and gradually downward in 1929-49, whereas fishing intensi
Authors
Richard L. Pycha, George R. King