Publications
Read publications and other informational products to learn more about USGS science occurring in the Mississippi Basin.
Filter Total Items: 5568
Assessment of sediment contamination at Great Lakes Areas of Concern: the ARCS Program Toxicity-Chemistry Work Group strategy Assessment of sediment contamination at Great Lakes Areas of Concern: the ARCS Program Toxicity-Chemistry Work Group strategy
In response to a mandate in Section 118(c)(3) of the Water Quality Act of 1987, a program called Assessment and Remediation of Contaminated Sediments (ARCS) was established. Four technical work groups were formed. This paper details the research strategy of the Toxicity-Chemistry Work Group. The Work Group's general objectives are to develop survey methods and to map the degree of...
Authors
P.E. Ross, G.A. Burton, E.A. Crecelius, J. C. Filkins, J. P. Giesy, C.G. Ingersoll, P.F. Landrum, M. J. Mac, T. J. Murphy, J. E. Rathbun, V. E. Smith, H. E. Tatem, R.W. Taylor
The Etowah: a river under siege The Etowah: a river under siege
Abstract not supplied at this time
Authors
N.M. Burkhead, J.D. Williams, B. J. Freeman
The status of loggerhead, Caretta caretta; Kemp's ridley, Lepidochelys kempi; and green, Chelonia mydas, sea turtles in U.S. waters: a reconsideration The status of loggerhead, Caretta caretta; Kemp's ridley, Lepidochelys kempi; and green, Chelonia mydas, sea turtles in U.S. waters: a reconsideration
Abstract not supplied at this time
Authors
C.K. Dodd, R.A. Byles
Food preferences of spring-migrating blue-winged teal in southwestern Louisiana Food preferences of spring-migrating blue-winged teal in southwestern Louisiana
We studied effects of pair status, molt intensity, and year on food selection by migrating male blue-winged teal (Anas discors) in southwestern Louisiana during springs 1990 and 1991. Diets consisted primarily of animal foods; but plant material, consisting mostly of seeds, comprised as much as 44%. There was no difference in animal food consumption by paired and unpaired males; however...
Authors
Scott W. Manley, W.L. Hohman, J.L. Moore, David Richard
Baseline levels of certain trace metals in sediment and biota Baseline levels of certain trace metals in sediment and biota
No abstract available.
Authors
A. J. Krynitsky, C.P. Rice, P.F. Roscigno
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
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
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
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
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
Knowledge-based GIS: An expert system approach for managing wetlands Knowledge-based GIS: An expert system approach for managing wetlands
No abstract available
Authors
Wei Ji, James B. Johnston, Marcia McNiff, Loyd C. Mitchell