Publications
Read publications and other informational products to learn more about USGS science occurring in the Mississippi Basin.
Filter Total Items: 5568
Agricultural chemical screening and detection of chlorpyrifos in fishes from the Apure drainage, Venezuela Agricultural chemical screening and detection of chlorpyrifos in fishes from the Apure drainage, Venezuela
Abstract not supplied at this time
Authors
L.G. Nico, D.J. Schaeffer, D.C. Taphorn, A. Barbarino-Duque.
Contaminants in fishes from Great Lakes-influenced sections and above dams of three Michigan rivers. I: Concentrations of organo chlorine insecticides, polychlorinated biphenyls, dioxin equivalents, and mercury Contaminants in fishes from Great Lakes-influenced sections and above dams of three Michigan rivers. I: Concentrations of organo chlorine insecticides, polychlorinated biphenyls, dioxin equivalents, and mercury
Fishes of the Great Lakes contain hazardous chemicals such as synthetic halogenated hydrocarbons and metals. These fish can move from the lakes into the Great Lakes tributaries of Michigan. In doing so, they transport concentrationsof contaminants which may represent a risk to wildlife. Concentrations of mercury (Hg), total polychlorinated biphenyls (PCBs), 2,3,7,8-tetrachlorodibenzo-p...
Authors
J. P. Giesy, D. A. Verbrugge, R. A. Othout, W.W. Bowerman, M.A. Mora, P. D. Jones, J.L. Newsted, C. Vandervoort, S. N. Heaton, R.J. Aulerich, S.J. Bursian, J. P. Ludwig, M. Ludwig, G. A. Dawson, T.J. Kubiak, D. A. Best, D. E. Tillitt
Ecological risk assessment: Application of new approaches and uncertainty analysis Ecological risk assessment: Application of new approaches and uncertainty analysis
No abstract available.
Authors
Lawrence A. Burns, Christopher G. Ingersoll, Gary A. Pascoe
Portable platforms for setting rocket nets in open-water areas Portable platforms for setting rocket nets in open-water areas
Portable platforms for setting rocket nets in open-water habitats were developed and used to capture 1116 waterfowl of seven species during September and October 1991 and 1992 in southwestern Louisiana. Incidence of mortality (1% of captured birds) and escape (3% of captured birds) was low. Rocket-netting from platforms was a reliable and efficient technique for capturing waterfowl, and...
Authors
R. R. Cox, A. D. Afton
Accumulation of 2,3,7,8-Tetrachlorodibenzo-p-dioxin equivalents by double-crested cormorant (Phalacrocorax auritus, Pelicaniformes) chicks in the North American Great Lakes Accumulation of 2,3,7,8-Tetrachlorodibenzo-p-dioxin equivalents by double-crested cormorant (Phalacrocorax auritus, Pelicaniformes) chicks in the North American Great Lakes
Concentrations of polychlorinated biphenyls (PCBs), and 2,3,7,8-tetrachlordibenzo-p-dioxin equivalents (TCDD-EQ) were determined in eggs and chicks of double-crested cormorants (DCC) which were collected in 1989 from eight locations in the Laurentian Great Lakes. The mean biomagnification factor (BMF) from forage fish to eggs was found to be 31.3. Absolute and relative concentrations as...
Authors
P. D. Jones, J. P. Giesy, J.L. Newsted, D. A. Verbrugge, J.P. Ludwig, M. E. Ludwig, H. J. Auman, R. Crawford, D. E. Tillitt, T.J. Kubiak, D. A. Best
Acute and chronic effects of four commercial herbicide formulations on Ceriodaphnia dubia Acute and chronic effects of four commercial herbicide formulations on Ceriodaphnia dubia
Toxicity tests with Ceriodaphnia dubia were conducted to determine acute (48 h) and chronic (7-day survival and reproduction) effects of four commonly used herbicide formulations. The 48-h LC50s in decreasing order of toxicity were 14.36 mg/L (Micro-Tech®), 15.93 mg/L (Bicep®), 32.99 mg/L (Extrazine®), and 35.36 mg/L (Lexone®). Reduced reproduction was detected at concentrations below 48...
Authors
M. P. Ort, J.F. Fairchild, S.E. Finger
National Water-Quality Assessment Program— Eastern Iowa basins National Water-Quality Assessment Program— Eastern Iowa basins
No abstract available.
Authors
Stephen J. Kalkhoff
Toxicity of metal-contaminated sediments from the upper Clark Fork River, Montana, to aquatic invertebrates and fish in laboratory exposures Toxicity of metal-contaminated sediments from the upper Clark Fork River, Montana, to aquatic invertebrates and fish in laboratory exposures
Sediments of the upper Clark Fork River, from the Butte and Anaconda area to Milltown Reservoir (230 km downstream), are contaminated with As, Cd, Cu, Pb, Mn, and Zn primarily from mining activities. The toxicity of pore water from these sediments was determined using Daphnia magna (48-h exposure), rainbow trout (96-h exposure), and Microtox®. However, pore-water data from these...
Authors
Nile E. Kemble, William G. Brumbaugh, Eric L. Brunson, F. James Dwyer, Christopher G. Ingersoll, Dave P. Monda, Daniel F. Woodward
Use of benthic invertebrate community structure and the sediment quality triad to evaluate metal-contaminated sediment in the upper Clark Fork River, Montana Use of benthic invertebrate community structure and the sediment quality triad to evaluate metal-contaminated sediment in the upper Clark Fork River, Montana
The upper Clark Fork River, above Flathead River, is contaminated with large amounts of As, Cd, Cu, Pb, Mn, and Zn ores from past mining activities. The contaminated area extends from the Butte and Anaconda area to at least 230 km downstream to Milltown Reservoir. Both the upper Clark Fork River and Milltown Reservoir have been designated as U.S. Environmental Protection Agency Superfund...
Authors
Timothy J. Canfield, Nile E. Kemble, William G. Brumbaugh, F. James Dwyer, Christopher G. Ingersoll, James F. Fairchild
Hydrologic processes controlling sulfate mobility in a small forested watershed Hydrologic processes controlling sulfate mobility in a small forested watershed
Hydrologic controls on sulfate mobility were investigated in a forested catchment in the Georgia Piedmont using a watershed mass balance approach. Variations in annual sulfate export were governed primarily by differences in runoff rather than by differences in sulfate deposition or in total annual precipitation. However, 2 years with similar total runoff had substantially different...
Authors
Thomas G. Huntington, R. P. Hooper, Brent T. Aulenbach
Relation among cytochrome P450, AH-active PCB congeners and dioxin equivalents in pipping black-crowned night-heron embryos Relation among cytochrome P450, AH-active PCB congeners and dioxin equivalents in pipping black-crowned night-heron embryos
Pipping black-crowned night-heron (Nycticorax nycticorax) embryos were collected from a relatively uncontaminated site (next to Chincoteague National Wildlife Refuge, VA) and three polluted sites (Cat Island, Green Bay, Lake Michigan, WI; Bair Island, San Francisco Bay, CA; West Marin Island, San Francisco Bay, CA). Hepatic cytochrome P-450-associated monooxygenases and cytochrome P-450...
Authors
Barnett A. Rattner, Jeff S. Hatfield, M. J. Melancon, T. W. Custer, D. E. Tillitt