Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 10365
Analysis of colonial wading bird habitat in coastal Louisiana Analysis of colonial wading bird habitat in coastal Louisiana
No abstract available.
Authors
R.D. Greer, C.E. Keller
Population biology of bluegills, Lepomis macrochirus, in lotic habitats on the irrigated San Joaquin Valley floor Population biology of bluegills, Lepomis macrochirus, in lotic habitats on the irrigated San Joaquin Valley floor
Rapid expansion of irrigated agriculture in the western United States has prompted concerns for aquatic resources. Although the impacts of irrigation activities on quality and quantity of river water are well documented (e.g., high turbidity from soil erosion, eutrophication from nutrient runoff, pesticide contamination, reduced dis- charge), their effects on fish populations are still...
Authors
M. K. Saiki, C. J. Schmitt
National Pesticide Monitoring Program: Residues of organochlorine chemicals in freshwater fish, 1980–81 National Pesticide Monitoring Program: Residues of organochlorine chemicals in freshwater fish, 1980–81
The U.S. Fish and Wildlife Service analyzed residues of organochlorine chemicals in 315 composite samples of whole fish collected in 1980–81 from 107 stations nationwide as part of the National Pesticide Monitoring Program (NPMP). The mean concentrations of total DDT and allp,p′-ho-mologs exceptp,p′-DDT showed significant but small declines relative to mean concentrations before 1978–79...
Authors
Christopher J. Schmitt, James L. Zajicek, M. A. Ribick
Comment on "Comparison of the carcinogenic risks from fish vs. groundwater contamination by organic compounds" Comment on "Comparison of the carcinogenic risks from fish vs. groundwater contamination by organic compounds"
No abstract available.
Authors
Christopher J. Schmitt, J. Larry Ludke
Interactions among temporary and permanent meiofauna: Observations on the feeding and behavior of selected taxa Interactions among temporary and permanent meiofauna: Observations on the feeding and behavior of selected taxa
Meiofauna diets and behavioral patterns are relatively unknown despite the fact that in any system, predatory relationships and behavioral responses may play an important role in determining community structure. Therefore, observations on food preferences, feeding behavior, and encounter interactions of members of a meiofauna assemblage were made in the laboratory in dishes of natural...
Authors
Mary C. Watzin
Estuary-wide mitigation options for port development in Tampa Bar, Florida Estuary-wide mitigation options for port development in Tampa Bar, Florida
No abstract available.
Authors
Steve Dial, Millicent L. Quammen, Don Deis, James B. Johnston
Ground-water data for the alluvial, buried channel, Basel Pleistocene and Dakota aquifer in west-central Iowa Ground-water data for the alluvial, buried channel, Basel Pleistocene and Dakota aquifer in west-central Iowa
The purpose of this investigation was to determine the availability, quantity and quality of groundwater from three principal aquifers in West-Central Iowa, the alluvial, buried channel, Basal Pleistocene and the Dakota aquifers. Specific objectives were to: (1) determine the location, extent and the nature of these aquifers; (2) evaluate the occurrence and movement of groundwater...
Authors
Pamela K. B. Hunt, Donna L. Runkle
Application of a ground-water flow digital model in evaluating alternate dewatering systems in the Río Grande de Arecibo alluvial valley, Puerto Rico Application of a ground-water flow digital model in evaluating alternate dewatering systems in the Río Grande de Arecibo alluvial valley, Puerto Rico
No abstract available.
Authors
Vicente Quinones-Aponte, Heriberto Torres-Sierra
Water quality and chemical evolution of ground water within the north coast limestone aquifers of Puerto Rico Water quality and chemical evolution of ground water within the north coast limestone aquifers of Puerto Rico
Waters within the north coastal limestoneaquifers are suitable for public supply, industrial and agricultural uses. For the artesian aquifer and the updip parts of the watertable aquifer, calcium and bicarbonate are the dominant ionic species with total dissolved solids and chloride concentrations below 500 and 250 mg/L, respectively. In coastal areas of thewater table aquifer, where a...
Authors
Angel J. Roman-Mas, Roger W. Lee
Water resources of north-central Iowa Water resources of north-central Iowa
One of man's fundamental needs is water. Modern man needs both a safe and dependable supply of water to maintain his present economic, industrial, and cultural level. In order to use this natural resource in the most efficient and beneficial manner, a basic knowledge and understanding of water sources, and of the occurrence and potential of each source, needs to be gained. To provide...
Authors
Robert Buchmiller, Gary Gaillot, P. J. Soenksen