Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 10361
Concentrations of dissolved and particulate Polychlorinated Biphenyls in water from the Saginaw River, Michigan Concentrations of dissolved and particulate Polychlorinated Biphenyls in water from the Saginaw River, Michigan
The Saginaw River receives water from a major drainage basin in the east-central portion of the lower peninsula of Michigan. Historically the river has been contaminated with polychlorinated biphenyls (PCBs) from several sources. The present study was conducted to determine the concentrations of PCBs in both the dissolved and particulate phases of water in the lower Saginaw River, as...
Authors
David A. Verbrugge, John P. Giesy, Miguel A. Mora, Lisa L. Williams, Ronald Rossmann, Russell A. Moll, Marc Tuchman
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
Identification of sex in hatchling loggerhead turtles (Caretta caretta) by analysis of steroid concentrations in chorioallantoic/amniotic fluid Identification of sex in hatchling loggerhead turtles (Caretta caretta) by analysis of steroid concentrations in chorioallantoic/amniotic fluid
A major difficulty in sea turtle conservation is the inability to nonlethally and noninvasively identify the sex of hatchling sea turtles. Traditional sexing techniques such as plasma sex steroid quantification cannot be applied to hatchlings without sacrificing the hatchlings or utilizing invasive procedures. This paper presents a technique for sexing hatchling sea turtles by analysis...
Authors
T. S. Gross, D.A. Crain, K.A. Bjorndal, A.B. Bolten, R. Carthy
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
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
Reproduction in free- ranging Florida manatees Reproduction in free- ranging Florida manatees
Abstract not supplied at this time
Authors
G. B. Rathbun, J.P. Reid, R. K. Bonde, J. A. Powell
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
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
[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
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
Treeshelters in Louisiana coastal swamps: An update Treeshelters in Louisiana coastal swamps: An update
Abstract has not been submitted
Authors
J. A. Allen
Documentation and guidelines for the application of telescoped models to simulate ground-water flow in coastal Georgia and adjacent parts of Florida and South Carolina Documentation and guidelines for the application of telescoped models to simulate ground-water flow in coastal Georgia and adjacent parts of Florida and South Carolina
No abstract available.
Authors
Reggina Garza, Christopher T. West