Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 10486
Florida Manatee Recovery Plan Second Revision Florida Manatee Recovery Plan Second Revision
Abstract not supplied at this time
Authors
Acetochlor in the hydrologic system in the midwestern United States, 1994 Acetochlor in the hydrologic system in the midwestern United States, 1994
The herbicide acetochlor [2-chloro-N-(ethoxymethyl)-N-(2-ethyl-6-methylphenyl)acetamide] was given conditional registration in the United States by the U.S. Environmental Protection Agency in March 1994. This registration provided a rare opportunity to investigate the occurrence of a pesticide during its first season of extensive use in the midwestern United States. Water samples...
Authors
D.W. Kolpin, B.K. Nations, D. A. Goolsby, E.M. Thurman
Deformities, PCBs, and TCDD-equivalents in double-crested cormorants (Phalacrocorax auritus) and Caspian terns (Hydroprogne caspia) of the Upper Great Lakes 1986–1991: Testing a cause-effect hypothesis Deformities, PCBs, and TCDD-equivalents in double-crested cormorants (Phalacrocorax auritus) and Caspian terns (Hydroprogne caspia) of the Upper Great Lakes 1986–1991: Testing a cause-effect hypothesis
Deformities have been reported in many species of colonial waterbirds from several localities on the Laurentian Great Lakes. The hypothesis that deformities were caused by either polychlorinated biphenyls (PCBs) or contaminants measured as 2,3,7,8-tetrachlorodibenzo-p-dioxin equivalents (TCDD-EQs) is tested in this review of available data on concentrations of contaminants in eggs and...
Authors
James P. Ludwig, Hiroko Kurita-Matsuba, Heidi J. Auman, Matthew E. Ludwig, Cheryl L. Summer, John P. Giesy, Donald E. Tillitt, Paul D. Jones
Discharge of oilfield-produced water in Nueces Bay, Texas: A case study Discharge of oilfield-produced water in Nueces Bay, Texas: A case study
During oil and gas production, water is often extracted from geological formations along with the hydrocarbons. These “produced waters” have been discharged to Nueces Bay since the turn of the century. These effluents were found to be highly toxic, and sediments in the vicinity of the discharges were also toxic. We developed a map of wells and produced-water discharge sites in the...
Authors
Claude D’Unger, Duane Chapman, R. Scott Carr
Environmental gradients and identification of wetlands in north-central Florida Environmental gradients and identification of wetlands in north-central Florida
Vegetation composition, soil morphology, and hydrology were characterized along wetland-to-upland gradients at six forested sites in north-central Florida to compare results of Federal wetland delineation methods with 3–5 yr of hydrologic data. Wetland and non-wetland identifications were supported by hydrology data in eight of nine plant communities. Lack of hydric soil indicators and...
Authors
M.M. Davis, S.W. Sprecher, J.S. Wakeley, G.R. Best
A 7 year record of above-ground net primary production in a southeastern Mexican mangrove forest A 7 year record of above-ground net primary production in a southeastern Mexican mangrove forest
Spatial and temporal variations in net above-ground primary production (NPP) and litter turnover rate were studied, from 1987 to 1993, in a mangrove forest bordering Laguna de Terminos, Mexico. NPP, the sum of total litter fall and wood production, was measured over the entire study period in three zones in a basin forest: zone I, where Rhizophora mangle (red mangrove) occurs but...
Authors
J.W. Day, Carlos Coronado-Molina, F. R. Vera-Herrera, R. Twilley, V. H. Rivera-Monroy, V. H. Alvarez-Guillen, Richard H. Day, William Conner
Water-quality assessment of the Trinity River Basin, Texas — Pesticides in streams draining an urban and an agricultural area, 1993-95 Water-quality assessment of the Trinity River Basin, Texas — Pesticides in streams draining an urban and an agricultural area, 1993-95
Water and bed-sediment samples from streams draining an urban and an agricultural area in the Trinity River Basin, Texas, were analyzed. The samples were collected during March 1993?September 1995 by the Trinity River Basin study-unit team of the National Water-Quality Assessment Program. A comparison of pesticide data for water samples from seven streams in the Dallas-Fort Worth urban...
Authors
Larry F. Land, Mariann F. Brown
The life-history and conservation biology of an island population of Florida box turtles Terrapene carolina bauri The life-history and conservation biology of an island population of Florida box turtles Terrapene carolina bauri
No abstract available.
Authors
C. Kenneth Dodd, R. Franz
Water resources data Texas, water year 1995, volume 3. Colorado River basin, Lavaca River basin, Guadalupe River basin, Nueces River basin, Rio Grande basin, and intervening coastal basins Water resources data Texas, water year 1995, volume 3. Colorado River basin, Lavaca River basin, Guadalupe River basin, Nueces River basin, Rio Grande basin, and intervening coastal basins
No abstract available.
Authors
S. C. Gandara, W.J. Gibbons, F.L. Andrews, J.C. Fisher, B.A. Hinds, R. E. Jones
Water resources data, Iowa, water year 1995 Water resources data, Iowa, water year 1995
No abstract available.
Authors
J.E. May, J.G. Gorman, R.D. Goodrich, M.W. Bobier, V.E. Miller
Floods of July 12, 1972, March 19, 1979, and June 15, 1991, in the Turkey River Basin, northeast Iowa Floods of July 12, 1972, March 19, 1979, and June 15, 1991, in the Turkey River Basin, northeast Iowa
Water-surface-elevation profiles and peak discharges for the floods of July 12, 1972, March 19, 1979, and June 15, 1991, in the Turkey River Basin, northeast Iowa, are presented in this report. The profiles illustrate the 1979 and 1991 floods along the Turkey River in Fayette and Clayton Counties and along the Volga River in Clayton County; the 1991 flood along Roberts Creek in Clayton...
Authors
D. A. Eash, B.A. Koppensteiner
Geologic framework and hydrogeologic characteristics of the Edwards aquifer outcrop (Barton Springs segment), northeastern Hays and southwestern Travis Counties, Texas Geologic framework and hydrogeologic characteristics of the Edwards aquifer outcrop (Barton Springs segment), northeastern Hays and southwestern Travis Counties, Texas
The hydrogeologic subdivisions within the Barton Springs segment of the Edwards aquifer outcrop in northeastern Hays and southwestern Travis Counties generally are porous and permeable. The most porous and permeable appear to be hydrogeologic subdivision VI, the Kirschberg evaporite member of the Kainer Formation; and hydrogeologic subdivision III, the leached and collapsed members...
Authors
Ted A. Small, John A. Hanson, Nico M. Hauwert