Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 9969
An alternative bacteriological medium for the isolation of Aeromonas spp.
Two solid bacteriologic media were compared for cultivating Aeromonas spp. from piscine sources: the Rimler-Shotts (RS) medium and a starch-glutamate-ampicillin-penicillin-based medium (SGAP-10C) used for the recovery of Aeromonas spp. from water samples. The selective and differential capacities of the media were assessed March through October 1992 by recovery rate and phenotype of 99 isolates re
Authors
J.A. Jenkins, P.W. Taylor
The effects of vertebrate herbivory on plant community structure in the coastal marshes of the Pearl River, Louisiana, USA
In this study, we investigated the impacts of herbivory by the introduced aquatic herbivore, nutria (Myocastor coypus), on three marsh communities of the Pearl River using fenced exclosures and control plots. Although total community above-ground biomass was reduced by 30% in the plots exposed to herbivory as compared to those protected from herbivory, we found species richness to be unaffected. W
Authors
K.L. Taylor, J.B. Grace
Sediment toxicity in Savannah Harbor
Savannah Harbor, located near the mouth of the Savannah River, Georgia and South Carolina, is impacted by industrial and municipal effluents. Potential release of contaminants stored in harbor sediments through dredging and shipping operations requires that contaminated areas be identified for proper management of the system and protection of wildlife resources. During 1991, Hyalella azteca were e
Authors
P. V. Winger, P. J. Lasier
Estimated withdrawals and use of freshwater in Vermont, 1990
Estimated freshwater withdrawals during 1990 in Vermont totaled about 632 million gallons per day. The largest withdrawals were for thermoelectric- power generation (82 percent), industrial use (7 percent), and public supply (6 percent). Most withdrawals, 587 million gallons per day, were made from surface-water sources as compared to 44.9 million gallons per day from ground-water sources. The lar
Authors
M.A. Horn, Laura Medalie
Flood frequency in Texas; calculation of peak-streamflow frequency at gaging stations
In 1991, the U.S. Geological Survey (USGS) began a 5-year study of floods in Texas. The study, which is being done in cooperation with the Texas Department of Transportation, uses streamflow data collected at streamflow-gaging stations to assess Texas flood characteristics. Two major objectives of the study are to determine for unregulated, rural basins (1) the most reliable method to calculate pe
Authors
William H. Asquith, Raymond M. Slade
Use of seismic refraction techniques for investigating recent landslides in a tropical rain forest in Puerto: Chapter 56
No abstract available.
Authors
Matthew C. Larsen
Metals-contaminated benthic invertebrates in the Clark Fork River, Montana: Effects on age-0 brown trout and rainbow trout
Benthic organisms in the upper Clark Fork River have recently been implicated as a dietary source of metals that may be a chronic problem for young-of-the-year rainbow trout (Oncorhynchus mykiss). In this present study, early life stage brown trout (Salmo trutta) and rainbow trout were exposed for 88 d to simulated Clark Fork River water and a diet of benthic invertebrates collected from the river
Authors
Daniel F. Woodward, Aïda M. Farag, Harold L. Bergman, Aaron J. Delonay, Edward E. Little, Charlie E. Smiths, Frederic T. Barrows
Documentation and guidelines for the application of telescoped models to simulate ground-water flow in coastal Georgia and adjacent parts of Florida and South Carolina
No abstract available.
Authors
Reggina Garza, Christopher T. West