Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 10361
Aquatic hazard assessment of the organophosphate insecticide fonofos Aquatic hazard assessment of the organophosphate insecticide fonofos
This study determined the acute and chronic toxicity of the organophosphate insecticide fonofos to standard freshwater aquatic organisms under laboratory conditions. Fonofos was acutely toxic to bluegill (Lepomis macrochirus), Daphnia (D. magna), and midge (Chironomous riparius) at 5.3, 2.7, and 39 μg/L, respectively. Three fonofos formulations (technical, 94.8% A.I.; 20G, field granular...
Authors
James F. Fairchild, Edward E. Little, James N. Huckins
A reconnaissance study of herbicides and their metabolites in surface water of the midwestern united states using immunoassay and gas chromatography/mass spectrometry A reconnaissance study of herbicides and their metabolites in surface water of the midwestern united states using immunoassay and gas chromatography/mass spectrometry
Preemergent herbicides and their metabolites, particularly atrazine, deethylatrazine, and metolachlor, persisted from 1989 to 1990 in the majority of rivers and streams in the midwestern United States. In spring, after the application of herbicides, the concentrations of atrazine, alachlor, and simazine were frequently 3-10 times greater than the U.S. Environmental Protection Agency...
Authors
E. Michael Thurman, D. A. Goolsby, M. T. Meyer, M. S. Mills, M.L. Pomes, Dana W. Kolpin
Investigations into the effects of PCB congeners on reproduction in lake trout from the Great Lakes Investigations into the effects of PCB congeners on reproduction in lake trout from the Great Lakes
Eggs of feral lake trout collected in Lake Michigan were reared under laboratory conditions and monitored for egg hatchability, physical abnormalities, and survival of fry. Subsamples of eggs were also analyzed for PCB congeners. A negative correlation was found between egg hatchability and total PCBs but expressing PCB dose as dioxin equivalents did not produce as strong a correlation...
Authors
Michael J. Mac, T.R. Schwartz
An indexed bibliography of the herpetofauna of Florida An indexed bibliography of the herpetofauna of Florida
No abstract available.
Authors
Kevin M. Enge, C. Kenneth Dodd
Rivulus tecminae, a new killifish from Amazonas Territory, Venezuela (Rivulidae, Cyprinodontiformes) Rivulus tecminae, a new killifish from Amazonas Territory, Venezuela (Rivulidae, Cyprinodontiformes)
Abstract not supplied at this time
Authors
J.E. Thomerson, L.G. Nico, D.C. Taphorn
Leporacanthicus triactis, a new loricariid fish from upper Orinoco River tributaries in Venezuela and Colombia (Pisces, Siluriformes, Loricariidae) Leporacanthicus triactis, a new loricariid fish from upper Orinoco River tributaries in Venezuela and Colombia (Pisces, Siluriformes, Loricariidae)
Abstract not supplied at this time
Authors
I.J. Isbrucker, H. Nijssen, L.G. Nico
American swallow-tail kite American swallow-tail kite
No abstract available
Authors
J. Allen, Wayne Norling
Use of semipermeable membrane devices for in situ monitoring of polycyclic aromatic hydrocarbons in aquatic environments Use of semipermeable membrane devices for in situ monitoring of polycyclic aromatic hydrocarbons in aquatic environments
A method is given for the recovery, cleanup, and analysis of polycyclic aromatic hydrocarbons (PAHs) that have been sequestered in SPMDs (semipermeable membrane devices). SPMDs are polymeric membranes enclosing lipids, and mimic the bioconcentration process of aquatic animals. SPMDs are used as passive, in situ monitors of contamination by organic pollutants of aquatic environments. The...
Authors
Jon A. Lebo, James L. Zajicek, James N. Huckins, Jimmie D. Petty, Paul H. Peterman
A sediment suspension system for bioassays with small aquatic organisms A sediment suspension system for bioassays with small aquatic organisms
Exposure of aquatic organisms to suspended sediments can impair growth and survival and increase bioaccumulation of sediment-associated contaminants. However, evaluation of the effects of suspended sediments and their associated contaminants on aquatic organisms has been hampered by the lack of a practical and inexpensive exposure system for conducting bioassays. We present a cost...
Authors
M. J. Schmidt-Dallmier, G.J. Atchison, M.T. Steingraeber, B.C. Knights
Water quality of the Edwards Aquifer and streams recharging the aquifer in the San Antonio region, Texas Water quality of the Edwards Aquifer and streams recharging the aquifer in the San Antonio region, Texas
The Edwards aquifer in south-central Texas is one of the most productive and most important aquifers in the State, with an average annual discharge of about 608,000 acre-ft of water during 1932-82 (Reeves and Ozuna, 1985). The Edwards aquifer is the principal source of water for municipal, industrial, and irrigation use in all or parts of five counties- Bexar, Comal, hays, Medina, and...
Authors
W.R. Roddy
The regional aquifer system underlying the northern Atlantic Coastal Plain in parts of North Carolina, Virginia, Maryland, Delaware, New Jersey, and New York— Summary The regional aquifer system underlying the northern Atlantic Coastal Plain in parts of North Carolina, Virginia, Maryland, Delaware, New Jersey, and New York— Summary
No abstract available.
Authors
Henry Trapp, Harold Meisler
Water resources data, Iowa, water year 1992 Water resources data, Iowa, water year 1992
No abstract available.
Authors
J.G. Gorman, C.J. Anderson, R.B. Lambert, D. Sneck-Fahrer, W. Wang