Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 10386
Analysis of water-quality trends at two discharge stations — One within Big Cypress National Preserve and one near Biscayne Bay — Southern Florida, 1966-94 Analysis of water-quality trends at two discharge stations — One within Big Cypress National Preserve and one near Biscayne Bay — Southern Florida, 1966-94
An analysis of water-quality trends was made at two U.S. Geological Survey daily discharge stations in southern Florida. The ESTREND computer program was the principal tool used for the determination of water-quality trends at the Miami Canal station west of Biscayne Bay in Miami and the Tamiami Canal station along U.S. Highway 41 in the Big Cypress National Preserve in Collier County...
Authors
A.C. Lietz
Revised: Activated mutatox assay for detection of genotoxic substances Revised: Activated mutatox assay for detection of genotoxic substances
No abstract available.
Authors
B. Thomas Johnson
Fish communities and their relation to environmental factors in the eastern Iowa basins in Iowa and Minnesota, 1996 Fish communities and their relation to environmental factors in the eastern Iowa basins in Iowa and Minnesota, 1996
Fish community data were collected by the U.S. Geological Survey (USGS) at 12 sites in 1996 in the Wapsipinicon, the Cedar, the Iowa, and the Skunk River Basins in eastern Iowa. The study was done as part of the National Water-Quality Assessment (NAWQA) Program of the USGS. This report presents an evaluation of the fish communities, the composition and conditions of the fish communities...
Authors
Daniel J. Sullivan
The effects of soil flooding on the establishment of cogongrass (Imperata cylindrica), a nonindigenous invader of the southeastern United States The effects of soil flooding on the establishment of cogongrass (Imperata cylindrica), a nonindigenous invader of the southeastern United States
Cogongrass (Imperata cylindrica), an invasive perennial introduced from Southeast Asia, is currently spreading throughout the southeastern United States from Florida to Louisiana. In the U.S., cogongrass is generally not considered a wetland species, although it’s range is expanding in regions with high wetland abundance. The objective of this study was to determine if excessive soil...
Authors
S.E. King, J.B. Grace
Climate change: Potential impacts and interactions in wetlands of the United States Climate change: Potential impacts and interactions in wetlands of the United States
Wetlands exist in a transition zone between aquatic and terrestrial environments which can be altered by subtle changes in hydrology. Twentieth century climate records show that the United States is generally experiencing a trend towards a wetter, warmer climate; some climate models suggest that his trend will continue and possibly intensify over the next 100 years. Wetlands that are...
Authors
Virginia Burkett, Jon Kusler
Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls
Sediment-quality guidelines (SQGs) have been published for polychlorinated biphenyls (PCBs) using both empirical and theoretical approaches. Empirically based guidelines have been developed using the screening-level concentration, effects range, effects level, and apparent effects threshold approaches. Theoretically based guidelines have been developed using the equilibrium-partitioning...
Authors
Donald D. MacDonald, Lisa M. Dipinto, Jay Field, Christopher G. Ingersoll, Edward R. Long, Richard C. Swartz
Biomonitoring and ecotoxicology: Fish as indicators of pollution-induced stress in aquatic systems Biomonitoring and ecotoxicology: Fish as indicators of pollution-induced stress in aquatic systems
No abstract available.
Authors
L. Cleveland, J.F. Fairchild, E. E. Little
Historic and present-day forest conditions: Implications for bottomland hardwood forest restoration Historic and present-day forest conditions: Implications for bottomland hardwood forest restoration
No abstract available
Authors
Keith Ouchley, R.B. Hamilton, W.C. Barrow, Kelby Ouchley
Natural resource and ecosystem costs of coastal hazards Natural resource and ecosystem costs of coastal hazards
Describes the topic of natural resource and ecosystem costs of coastal hazards through the work of the John Heinz III Center for Science, Economics and the Environment.
Authors
H. Kunreuther, R. Platt, S. Baruch, R. Bernknopf, M. Buckley, V. Burkett, D. Conrad, T. Davidson, K. Deutsch, D. Geis, M. Jannereth, A. Knap, H. Lane, G. Ljung, M. McCauley, D. Mileti, T. Miller, B. Morrow, J. Meyers, R. A. Pielke, A. Pratt, J. Tripp
Trace elements in seep waters along Whitewood Creek, South Dakota, and their toxicity to fathead minnows Trace elements in seep waters along Whitewood Creek, South Dakota, and their toxicity to fathead minnows
Whitewood Creek, located in the Black Hills of southwestern South Dakota, has a long history of contamination from mining activity. Gold exploration began in the 1870s, and has continued since that time. Whitewood Creek received direct releases of tailings from 1870 to 1977 from Gold Run Creek in Lead, SD. It has been estimated that approximately 100 million to 1 billion tons of mining...
Authors
S. J. Hamilton, K.J. Buhl
Fate of oxygen losses from Typha domingensis (Typhaceae) and Cladium jamaicense (Cyperaceae) and consequences for root metabolism Fate of oxygen losses from Typha domingensis (Typhaceae) and Cladium jamaicense (Cyperaceae) and consequences for root metabolism
The objective of this work was to determine whether radial oxygen loss (ROL) from roots of Typha domingensis and Cladium jamaicense creates an internal oxygen deficiency or, conversely, indicates adequate internal aeration and leakage of excess oxygen to the rhizosphere. Methylene blue in agar was used to quantify oxygen leakage. Typha's roots had a higher porosity than Cladium's and...
Authors
A. Chabbi, K.L. McKee, I.A. Mendelssohn