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Publications

Publications from USGS science centers throughout the Southeast Region.

Filter Total Items: 10486

Contaminated sediments from tributaries of the Great Lakes: Chemical characterization and carcinogenic effects in medaka (Oryzias latipes) Contaminated sediments from tributaries of the Great Lakes: Chemical characterization and carcinogenic effects in medaka (Oryzias latipes)

Sediments from four inshore industrial sites and a reference site in the Great Lakes were extracted with organic solvents to produce a crude extract, which was separated on alumina into two fractions: predominantly polycyclic aromatic hydrocarbons; and predominantly nitrogencontaining polycyclic aromatic compounds. Crude extracts were redissolved in acetone and analyzed by gas...
Authors
John M. Besser, Christopher J. Schmitt, John C. Harshbarger, Paul H. Peterman, Jon A. Lebo

The influence of ambient salinity on routine metabolism in the teleost Cyprinodon variegatus Lacepède The influence of ambient salinity on routine metabolism in the teleost Cyprinodon variegatus Lacepède

Routine metabolism of the euryhaline cyprinodontid Cyprinodon variegatus Lacepede was measured at a series of ambient salinities ranging from fresh water through 100‰. Fish used had been sequentially acclimated to the test salinities (ambient temperature of 20±1° C and a 12: 12 L: D schedule). Routine metabolic rates were highest at ambient salinities from 15 to 50‰. Metabolism was...
Authors
F.G. Nordlie, S. J. Walsh, D. C. Haney, T.F. Nordlie

The impact of debris on the Florida manatee The impact of debris on the Florida manatee

The endangered Florida manatee ingests debris while feeding. From 1978 through 1986, 439 salvaged manatees were examined. Debris was in the gastrointestinal tract of 63 (14.4%) and four died as a direct result of debris ingestion. Monofilament fishing line was the most common debris found (N=49). Plastic bags, string, twine, rope, fish hooks, wire, paper, cellophane, synthetic sponges...
Authors
C.A. Beck, N.B. Barros

Chemometric comparison of polychlorinated biphenyl residues and toxicologically active polychlorinated biphenyl congeners in the eggs of Forster's Terns (Sterna fosteri) Chemometric comparison of polychlorinated biphenyl residues and toxicologically active polychlorinated biphenyl congeners in the eggs of Forster's Terns (Sterna fosteri)

The separation and characterization of complex mixtures of polychlorinated biphenyls (PCBs) is approached from the perspective of a problem in chemometrics. A technique for quantitative determination of PCB congeners is described as well as an enrichment technique designed to isolate only those congener residues which induce mixed aryl hydrocarbon hydroxylase enzyme activity. A congener...
Authors
Ted R. Schwartz, David L. Stalling

Effects of land-management practices on sediment yields in northeastern Guilford County, North Carolina Effects of land-management practices on sediment yields in northeastern Guilford County, North Carolina

Streamflow, precipitation, and suspended-sediment data were collected from two small agricultural basins in the Piedmont province of North Carolina. The data were used to determine the effects of land-management practices on sediment yield. One basin of 7.4 acres represents best land-management practices with strip cropping, crop rotation, contour farming, and grassed waterways. The...
Authors
C.L. Hill

Water-quality data from continuously monitored sites in the Pamlico and Neuse River estuaries, North Carolina, 1989-90 Water-quality data from continuously monitored sites in the Pamlico and Neuse River estuaries, North Carolina, 1989-90

Beginning in April 1989, water quality measurements were made at six sites in or near Pamlico River estuary and at five sites in or near the Neuse River estuary. Measurements taken at 15-minute intervals included near-surface and near-bottom specific conductance; near-surface water temperature; and near-surface, mid-depth, and near-bottom dissolved-oxygen concentrations. Water-quality...
Authors
Ronald G. Garrett, Jerad Bales
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