Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 10420
Aquatic invertebrate production in southeastern USA wetlands during winter and spring Aquatic invertebrate production in southeastern USA wetlands during winter and spring
We measured aquatic invertebrate abundance, standing stock biomass, and community production in three types of wetlands on Noxubee National Wildlife Refuge from December 1987 through April 1988. Together, Orthocyclops modestus and Daphnia pulex were the most abundant organisms collected in all habitats during both winter and spring, but each contributed little to total standing stock...
Authors
Walter G. Duffy, Douglas LaBar
Comparison of flank margin cave development on San Salvador island, Bahamas, and Isla de Mona, Puerto Rico Comparison of flank margin cave development on San Salvador island, Bahamas, and Isla de Mona, Puerto Rico
San Salvador Island, Bahamas is a 161 Km2 tectonically stable late Quaternary carbonate island located 600 km east-southeast of Miami FL. San Salvador contains numerous flank margin caves (phreatic karst features) that developed primarily in late Pleistocene eolianites. These caves developed during a short time in versy small fresh-water lenses. Cave elevations and Uranium-series ages...
Authors
J. Mylroie, J.L. Carew, E.F. Frank, Matthew C. Larsen
MAPS is for the birds MAPS is for the birds
No abstract available
Authors
David L. Watts, Daniel J. Twedt, Allan J. Mueller
Ground water and the floods of 1993 Ground water and the floods of 1993
No abstract available.
Authors
R.C. Buchmiller
Effects of weather and tides on feeding and flock positions of wintering redheads in the Chandeleur Sound, Louisiana Effects of weather and tides on feeding and flock positions of wintering redheads in the Chandeleur Sound, Louisiana
We studied the effects of weather and tides on percent feeding and flock positions of wintering redheads (Aythya americana Eyton) in the Chandeleur Sound, Louisiana, USA. Flock scans (n = 750) were made on 55 flocks from November through March of 1988–1989. The percent of the flock that was feeding was negatively correlated with time of day, temperature, water level, and distance of the...
Authors
Thomas C. Michot, E. Barry Moser, Wayne Norling
Mangroves, hurricanes, and lightning strikes: Assessment of Hurricane Andrew suggests an interaction across two differing scales of disturbance Mangroves, hurricanes, and lightning strikes: Assessment of Hurricane Andrew suggests an interaction across two differing scales of disturbance
The track of Hurricane Andrew carried it across one of the most extensive mangrove for ests in the New World. Although it is well known that hurricanes affect mangrove forests, surprisingly little quantitative information exists concerning hurricane impact on forest structure, succession, species composition, and dynamics of mangrove-dependent fauna or on rates of eco-system recovery...
Authors
Thomas J. Smith, Michael B. Robblee, Harold R. Wanless, Thomas W. Doyle
Hurricane impacts on uplands and freshwater swamp forest: Large trees and epiphytes sustained the greatest damage during Hurricane Andrew Hurricane impacts on uplands and freshwater swamp forest: Large trees and epiphytes sustained the greatest damage during Hurricane Andrew
No abstract available.
Authors
Lloyd Loope, Michael Duever, Alan Herndon, James Snyder, Deborah Jansen
Deformities in birds of the Great Lakes region. Assigning causality Deformities in birds of the Great Lakes region. Assigning causality
No abstract available.
Authors
John P. Giesy, James P. Ludwig, Donald E. Tillitt
National wetlands research center uses visual true color classification in waterfowl habitat mapping National wetlands research center uses visual true color classification in waterfowl habitat mapping
No abstract available.
Authors
Elijah Ramsey III, Steve Hartley
Evaluation of effects caused by high copper concentrations in Torch Lake, Michigan, on reproduction of yellow perch Evaluation of effects caused by high copper concentrations in Torch Lake, Michigan, on reproduction of yellow perch
Elevated concentrations of copper are present in Torch Lake, Michigan, an Environmental Protection Agency Superfund site. The sauger (Stizostedion canadense) population in Torch Lake has been extirpated and walleye (Stizostedion vitreum) populations are maintained by stocking. We used yellow perch (Perca flavescens) to determine if chronic exposure to elevated copper concentrations has...
Authors
S.A. Ellenberger, Paul C. Baumann, Thomas W. May
Fate and pathways of injection-well effluent in the Florida Keys Fate and pathways of injection-well effluent in the Florida Keys
Twenty-four wells (21 locations) were core drilled into the limestone beneath the Keys, reef tract, and outer reefs to determine if sewage effluents injected in Class V wells onshore are reaching offshore reef areas via underground flow. These wells were fitted with PVC casings and well screens and were sampled every three months for a period of one year. Analyses showed consistent...
Authors
Eugene A. Shinn, Ronald S. Reese, Christopher D. Reich
Nutria grazing impacts on vegetation in coastal wetlands Nutria grazing impacts on vegetation in coastal wetlands
No abstract available.
Authors
Lori A. Johnson, A. Lee Foote