Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 10420
Dead and dying Brazilian free-tailed bats (Tadarida brasiliensis) from Texas: Rabies and pesticide exposure Dead and dying Brazilian free-tailed bats (Tadarida brasiliensis) from Texas: Rabies and pesticide exposure
Twenty-three dead and dying Brazilian free-tailed bats from roosts in downtown Mineral Wells, Palo Pinto County, Texas, were tested for rabies and for anticholinesterase (antiChE) effects of or- ganophosphorus (OP) and carbamate pesticides. Seventeen of the 23 bats tested positive for rabies. The cause of death or dying in five of the nonrabid bats is unknown; however, one of the six...
Authors
Donald R. Clark, Amanda Lollar, Deborah Cowman
The role of water ventilation and sediment ingestion in the uptake of benzo[A]pyrene in gizzard shad (Dorosoma cepedianum) The role of water ventilation and sediment ingestion in the uptake of benzo[A]pyrene in gizzard shad (Dorosoma cepedianum)
The objective of this study was to determine whether sediment ingestion or water ventilation was the primary route of uptake for benzo[a]pyrene (BaP) in the gizzard shad (Dorosoma cepedianum), a detritivorous fish. Two experiments were conducted in which fish were exposed to sediments spiked with 1 μg/g BaP. In the first experiment, fish were prevented from feeding by esophagus ligation...
Authors
Alan Kolok, James N. Huckins, Jimmie D. Petty, James T. Oris
Occurrence of selected pesticides and their metabolites in near-surface aquifers of the midwestern United States Occurrence of selected pesticides and their metabolites in near-surface aquifers of the midwestern United States
The occurrence and distribution of selected pesticides and their metabolites were investigated through the collection of 837 water-quality samples from 303 wells across the Midwest. Results of this study showed that five of the six most frequently detected compounds were pesticide metabolites. Thus, it was common for a metabolite to be found more frequently in groundwater than its parent...
Authors
D.W. Kolpin, Thurman E. Michael, D. A. Goolsby
Use of aerial survey and aerophotogrammetry methods in monitoring manatee populations. Florida Cooperative Fish and Wildlife Research Unit RWO No. 116 Final Report Use of aerial survey and aerophotogrammetry methods in monitoring manatee populations. Florida Cooperative Fish and Wildlife Research Unit RWO No. 116 Final Report
Abstract not supplied at this time
Authors
Karl E. Miller, B.B. Ackerman, L.W. Lefebvre, Kari B. Clifton
Analysis of nitrate in near-surface aquifers in the midcontinental United States: An application of the inverse hyperbolic sine Tobit model Analysis of nitrate in near-surface aquifers in the midcontinental United States: An application of the inverse hyperbolic sine Tobit model
A nonnormal and heteroscedastic Tobit model is used to determine the primary factors that affect nitrate concentrations in near-surface aquifers, using data from the U.S. Geological Survey collected in 1991. Both normality and homoscedasticity of errors are rejected, justifying the use of a nonnormal and heteroscedastic model. The following factors are found to have significant impacts...
Authors
Steven T. Yen, Shiping Liu, Dana W. Kolpin
Use of the semipermeable membrane device (SPMD) to sample polycyclic aromatic hydrocarbon pollution in a lotic system Use of the semipermeable membrane device (SPMD) to sample polycyclic aromatic hydrocarbon pollution in a lotic system
Relative concentrations of aqueous polycyclic aromatic hydrocarbons (PAH) were investigated in an urban creek. Samples were obtained at five sites within a 600-m segment of the creek that is critical habitat for an endangered species of fish. the sampling technique entailed immersion of semipermeable membrane devices (SPMDs) in the water for intervals as long as 64 d. SPMDs are passive...
Authors
Jon A. Lebo, James L. Zajicek, Carl E. Orazio, Jimmie D. Petty, James Huckins, Ernest H. Douglas
Real-time rainfall-runoff model of the Carraizo-reservoir basin in Puerto Rico Real-time rainfall-runoff model of the Carraizo-reservoir basin in Puerto Rico
No abstract available.
Authors
Nicasio Sepulveda, Francisco Perez-Blair, L. L. DeLong, Dianne Lopez Trujillo
Vacuum hand pump apparatus for collecting water samples from a horizontal intragravel pipe Vacuum hand pump apparatus for collecting water samples from a horizontal intragravel pipe
We describe a lightweight, portable vacuum hand pump apparatus for use in collecting water samples from horizontal intragravel pipe samplers buried in the stream bottom. The apparatus is easily fabricated from relatively inexpensive materials available at many laboratory supply houses.
Authors
Michael K. Saiki, Barbara A. Martin
Water resources data Texas, water year 1995, volume 4. Ground water Water resources data Texas, water year 1995, volume 4. Ground water
No abstract available.
Authors
S. C. Gandara, R. E. Jones
Using a geographic information system and scanning technology to create high-resolution land-use data sets Using a geographic information system and scanning technology to create high-resolution land-use data sets
A geographic information system (GIS) procedure was developed to compile low-altitude aerial photography, digitized data, and land-use data from U.S. Department of Agriculture Consolidated Farm Service Agency (CFSA) offices into a high-resolution (approximately 5 meters) land-use GIS data set. The aerial photography consisted of 35-mm slides which were scanned into tagged information...
Authors
Craig A. Harvey, Dana W. Kolpin, William A. Battaglin
Water resources data Texas, water year 1995, volume 1. Arkansas River basin, Red River basin, Sabine River basin, Neches River basin, Trinity River Basin, and intervening coastal basins Water resources data Texas, water year 1995, volume 1. Arkansas River basin, Red River basin, Sabine River basin, Neches River basin, Trinity River 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
Hydrogeologic framework of western Cape Cod, Massachusetts Hydrogeologic framework of western Cape Cod, Massachusetts
No abstract available.
Authors
John P. Masterson, B. D. Stone, D. A. Walter, Jennifer G. Savoie