Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 10486
United States Geological Survey, programs in Texas United States Geological Survey, programs in Texas
Meteorologic and physiographic factors in parts of Texas combine to produce some of the most intense rainstorms in the Nation; these rainstorms cause severe, destructive floods somewhere in the State almost every year. A recent example is the catastrophic flooding in the Houston area in October 1994 that resulted in at least 22 deaths, hundreds of millions of dollars in property damage...
Authors
Water Resources Division U.S. Geological Survey
Hepatic cadmium, metal-binding proteins and bioaccumulation in bluegills exposed to aqueous cadmium Hepatic cadmium, metal-binding proteins and bioaccumulation in bluegills exposed to aqueous cadmium
We examined sublethal responses of juvenile bluegills Lepomis macrochirus to aqueous cadmium in two 28-d tests (test I, 0.0-8.4 μg Cd per liter; test II, 0.0-32.3 μg Cd per liter) in an intermittent-flow diluter. The experimental design was completely randomized, with two replicates in each of eight treatments (seven Cd exposures and one water control with 25 fish per replicate). Cadmium...
Authors
W.G. Cope, G.J. Atchison, J.G. Wiener
Cadmium, metal-binding proteins, and growth in bluegill (Lepomis macrochirus Cadmium, metal-binding proteins, and growth in bluegill (Lepomis macrochirus
We exposed juvenile bluegill (Lepomis macrochirus) to ~1000 mg∙L−1 of continuously suspended river sediment in a 28-d test with six treatments (randomized block with one sediment-free control and five sediments ranging from 1.3 to 21.4 μg Cd∙g dry weight−1). Each treatment had three replicates, each with 25 fish. Growth was reduced by exposure to suspended sediment, probably due to...
Authors
W. Gregory Cope, James G. Wiener, Mark T. Steingraeber, Gary J. Atchison
Geographic distribution: Sphaerodactylus notatus amaurus (Great Bahama Bank Ground Gecko) Geographic distribution: Sphaerodactylus notatus amaurus (Great Bahama Bank Ground Gecko)
Abstract not supplied at this time
Authors
R. Franz, C.K. Dodd
Sirenian status and conservation efforts Sirenian status and conservation efforts
Abstract not supplied at this time
Authors
H. Marsh, L.W. Lefebvre
Standard operating procedures for the fish monitoring project with ENTERGY Corporation Standard operating procedures for the fish monitoring project with ENTERGY Corporation
Abstract not supplied at this time
Authors
C.J. Gagen, J.N. Stoeckel, R.K. Beadel, J.J. Herod, D.O. McCollum
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
Simulations of flow in the Edwards-Trinity aquifer system and contiguous hydraulically connected units, west-central Texas Simulations of flow in the Edwards-Trinity aquifer system and contiguous hydraulically connected units, west-central Texas
The Edwards-Trinity aquifer system is currently (1993) being studied as part of the Regional Aquifer-Systems Analysis program. A major goal of the project is to understand and describe the regional ground-water flow system. A finite-element model for simulating two-dimensional steady-state ground-water flow was applied to the major aquifers of the Edwards-Trinity aquifer system and...
Authors
E. L. Kuniansky, K. Q. Holligan
Determination of chlorinated insecticides in bottom sediment using an electron-capture gas chromatography screening method, Austin, Texas, 1991 and 1992 Determination of chlorinated insecticides in bottom sediment using an electron-capture gas chromatography screening method, Austin, Texas, 1991 and 1992
Twenty-two bottom-sediment samples were collected from Town Lake in Austin, Texas, in 1991 and 1992 and analyzed for chlorinated insecticides by a reconnaissance-quality, electron-capture gas chromatography screening method developed by the U.S. Geological Survey (USGS). Four different chlorinated insecticides (aldrin, chlordane, dieldrin, and p,p'-DDT) and two degradation products of p...
Authors
Robert D. Brock, Lucinda K. Murtagh
Use of landsat thematic mapper data to identify crop types and estimate irrigated acreage, Uvalde and Medina counties, Texas, 1991 Use of landsat thematic mapper data to identify crop types and estimate irrigated acreage, Uvalde and Medina counties, Texas, 1991
Landsat Thematic Mapper (TM) data were used to estimate that about 51,000 acres of crops were irrigated with water pumped from the Edwards aquifer in Uvalde and Medina Counties, Texas in 1991. Bands 2, 3,4, and 5 from a TM image for August 10,1991, were classified using the maximum-likelihood, unsupervised-classification procedure to identify the areas of crops irrigated in the two...
Authors
L.H. Raymond, S.I. McFarlane
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