Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 10387
A multiple testing approach for hazard evaluation of complex mixtures in the aquatic environment: the use of diesel oil as a model A multiple testing approach for hazard evaluation of complex mixtures in the aquatic environment: the use of diesel oil as a model
Traditional single species toxicity tests and multiple component laboratory-scaled microcosm assays were combined to assess the toxicological hazard of diesel oil, a model complex mixture, to a model aquatic environment. The immediate impact of diesel oil dosed on a freshwater community was studied in a model pond microcosm over 14 days: a 7-day dosage and a 7-day recovery period. A...
Authors
B. Thomas Johnson
Accretion and canal impacts in a rapidly subsiding wetland II: Feldspar marker horizon technique Accretion and canal impacts in a rapidly subsiding wetland II: Feldspar marker horizon technique
Recent (6–12 month) marsh sediment accretion and accumulation rates were measured with feldspar marker horizons in the vicinity of natural waterways and man-made canals with spoil banks in the rapidly subsiding environment of coastal Louisiana. Annual accretion rates in aSpartina alterniflora salt marsh in the Mississippi deltaic plain averaged 6 mm in marsh adjacent to canals compared...
Authors
Donald R. Cahoon, R.E. Turner
Bone characteristics and metal concentrations in white suckers (Catostomus commersoni) from one neutral and three acidified lakes in Maine Bone characteristics and metal concentrations in white suckers (Catostomus commersoni) from one neutral and three acidified lakes in Maine
The bone characteristics of white suckers, Catostomus commersoni, from four lakes in Maine were studied in relation to lake water quality and metal concentrations in fish. Green Lake had a neutral pH, high buffering capacity, and low aluminum concentrations, whereas the other three lakes had low pH, low buffering capacity, and elevated aluminum concentrations. The concentrations of...
Authors
Steven J. Hamilton, Terry A. Haines
Low-flow profiles of the upper Chattahoochee River and tributaries in Georgia Low-flow profiles of the upper Chattahoochee River and tributaries in Georgia
No abstract available.
Authors
R.F. Carter, E. H. Hopkins, H.A. Perlman
Hydrology of the Floridan aquifer system in Southeast Georgia and adjacent parts of Florida and South Carolina Hydrology of the Floridan aquifer system in Southeast Georgia and adjacent parts of Florida and South Carolina
No abstract available.
Authors
R.E. Krause, R.B. Randolph
Effects of land use on the water quality and biota of three streams in the Piedmont province of North Carolina Effects of land use on the water quality and biota of three streams in the Piedmont province of North Carolina
Three small streams in North Carolina 's northern Piedmont were studied to compare the effects of land use in their watersheds on water quality characteristics and aquatic biota. Devil 's Cradle Creek (agricultural watershed) had more than two times the sediment yield of Smith Creek (forested watershed) (0.34 tons/acre compared to 0.13 tons/acre), and Marsh Creek (urban watershed) had...
Authors
J. K. Crawford, D. R. Lenat
Pattern and process in arid-region salt marshes - Southern California Pattern and process in arid-region salt marshes - Southern California
No abstract available.
Authors
Christopher P. Onuf, Joy B. Zedler
Annual body weight change in ring-neck ducks (Aythya collaris) Annual body weight change in ring-neck ducks (Aythya collaris)
No abstract available.
Authors
William L. Hohman, T. Scott Taylor, Milton W. Weller
Field validation of a habitat suitability index model for the American oyster Field validation of a habitat suitability index model for the American oyster
A habitat suitability index (HSI) model, developed for the American oyster,Crassostrea virginica, along the Gulf of Mexico, was field tested on 38 0.1-ha reef and nonreef sites in Galveston Bay, Texas. The HSI depends upon six (HSI1) or, optionally, eight (HSI2) variables. The six variables are percent of bottom covered with suitable cultch (V1), mean summer water salinity (V2), mean...
Authors
Thomas M. Soniat, Michael S. Brody
Workshop summary: Habitat loss and its effect on waterfowl Workshop summary: Habitat loss and its effect on waterfowl
No abstract available.
Authors
Robert E. Stewart, Gary Krapu, Bruce Conant, H. Franklin Percival, David L. Hall
Habitat relationships of island nesting seabirds along Coastal Louisiana Habitat relationships of island nesting seabirds along Coastal Louisiana
Seabirds in the saline marsh of coastal Louisiana nest on the islands that are more isolated, smaller, have lower percentages of woody vegetation, and higher percentages of herbaceous vegetation and beach habitat. Only moderate variation in these habitat features was demonstrated among years of colonization. The factors causing these preferences appear to be protection from mammalian...
Authors
Richard D. Greer, Carroll L. Cordes, Stanley H. Anderson
Yellow-headed Blackbird nesting in Iowa: A twenty year follow-up Yellow-headed Blackbird nesting in Iowa: A twenty year follow-up
No abstract available
Authors
Mike Brown