Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 10486
Geology and hydrology of the Edwards Aquifer in the San Antonio area, Texas Geology and hydrology of the Edwards Aquifer in the San Antonio area, Texas
The Edwards aquifer, which is the sole source of water for the city of San Antonio, is one of the most permeable and productive carbonate aquifers in the United States. The aquifer is composed of extensively faulted, fractured, and cavernous limestone and dolomite of Early Cretaceous age lying within the Balcones fault zone a series of normal en echelon strike faults that separate the...
Authors
Robert W. Maclay
[Book review] Antarctic Seals: Research Methods and Techniques, edited by R. M. Laws [Book review] Antarctic Seals: Research Methods and Techniques, edited by R. M. Laws
Review of: Antarctic Seals: Research Methods and Techniques. Edited by R. M. LAWS. Cambridge: Cambridge University Press (1993). Pp. xxii+390. Price $84.95.
Authors
C. J. Deutsch
Treeshelters in Louisiana coastal swamps: An update Treeshelters in Louisiana coastal swamps: An update
Abstract has not been submitted
Authors
J. A. Allen
Reservoir water quality at Corydon, Iowa Reservoir water quality at Corydon, Iowa
No abstract available.
Authors
Matthew W. Bobier
Marine turtles in the Southeast Marine turtles in the Southeast
Five species of marine turtles frequent the beaches and offshore waters of the southeastern United States: loggerhead (Caretta caretta), green (Chelonia mydas), Kemp's ridley (Lepidochelys kempii), leatherback (Dermochelys coriacea), and hawksbill (Eretmochelys imbricata). All five are reported to nest, but only the loggerhead and green turtle do so in substantial numbers. Most nesting...
Authors
C. Kenneth Dodd
Comparison of methods for conducting marine and estuarine sediment porewater toxicity tests—extraction, storage, and handling techniques Comparison of methods for conducting marine and estuarine sediment porewater toxicity tests—extraction, storage, and handling techniques
A series of studies was conducted to compare different porewater extraction techniques and to evaluate the effects of sediment and porewater storage conditions on the toxicity of pore water, using assays with the sea urchin Arbacia punctulata. If care is taken in the selection of materials, several different porewater extraction techniques (pressurized squeezing, centrifugation, vacuum)...
Authors
R.S. Carr, D.C. Chapman
Seasonal abundance and habitat use of selected snakes trapped in xeric and mesic communities of north-central Florida Seasonal abundance and habitat use of selected snakes trapped in xeric and mesic communities of north-central Florida
Abstract not supplied at this time
Authors
C.K. Dodd, R. Franz
Formation and regression of the corpus luteum of the American alligator Formation and regression of the corpus luteum of the American alligator
Luteal morphology of the American alligator is unique when compared to other reptiles but is similar to that of its phylogenetic relatives, the birds. The theca is extensively hypertrophied, but the granulosa never fills the cavity formed following the ovulation of the ovum. The formation of the corpus luteum (CL) is correlated with elevated plasma progesterone concentrations, which...
Authors
L. J. Guillette, A.R. Woodward, Q. You-Xiang, M.C. Cox, J.H. Matter, T. S. Gross
Wind damage effects of Hurricane Andrew on mangrove communities along the southwest coast of Florida, USA Wind damage effects of Hurricane Andrew on mangrove communities along the southwest coast of Florida, USA
On August 24, 1992, Hurricane Andrew downed and defoliated an extensive swath of mangrove trees across the lower Florida peninsula. Permanent field sites were established to assess the extent of forest damage and to monitor the rate and process of forest recovery. Canopy trees suffered the highest mortality particularly for sites within and immediately north of the storm's eyewall. The...
Authors
T.W. Doyle, T. J. Smith, M. B. Robblee
Dicofol and DDT residues in lizard carcasses and bird eggs from Texas, Florida, and California Dicofol and DDT residues in lizard carcasses and bird eggs from Texas, Florida, and California
Dicofol is an organochlorine agricultural pesticide used to control mites. The principal commercial dicofol product is known as Kelthane TM. More than 70% of dicofol product (about 3 million Ib or 1.4 million kg) sold annually in the U.S. is applied in California, Arizona, Texas, and Florida. Florida citrus and California cotton receive more than half the total (Clark 1990). In...
Authors
D.R. Clark, Edward L. Flickinger, Donald H. White, R. L. Hothem, A. A. Belisle
Aerial survey as a technique for estimating manatee population size and trend - problems and prospects Aerial survey as a technique for estimating manatee population size and trend - problems and prospects
Abstract not supplied at this time
Authors
L.W. Lefebvre, B.B. Ackerman, Kenneth M. Portier, K. H. Pollock
Reproduction and early-age survival of manatees at Blue Spring, Upper St. Johns River, Florida Reproduction and early-age survival of manatees at Blue Spring, Upper St. Johns River, Florida
We summarize reproduction of adults and survival of calves and subadult Florida manatees (Trichechus manatus latirostris) that were identified in winter at Blue Spring on the upper St. Johns River in Florida. Some records span more than 20 years, but most are from 15-year continuous annual observations during winter 1978-79 through winter 1992-93. Fifty-seven, first-year calves were...
Authors
Thomas J. O'Shea, W.C. Hartley