Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 10361
Automated HPLC fractionation of PCDDs and PCDFs and planar and nonplanar PCBs on C18-dispersed PX-21 carbon Automated HPLC fractionation of PCDDs and PCDFs and planar and nonplanar PCBs on C18-dispersed PX-21 carbon
No abstract available.
Authors
Kevin P. Feltz, Donald E. Tillitt, Robert W. Gale, Paul H. Peterman
Estimation of survival of adult Florida manatees in the Crystal River, at Blue Spring, and on the Atlantic Coast Estimation of survival of adult Florida manatees in the Crystal River, at Blue Spring, and on the Atlantic Coast
We applied Cormack-Jolly-Seber open population models to manatee (Trichechus manatus latirostris) photo-identification databases to estimate adult survival probabilities. The computer programs JOLLY and RECAPCO were used to estimate survival of 677 individuals in three study areas: Crystal River (winters 1977-78 to 1990-91), Blue Spring (winters 1977-78 to 1990-91), and the Atlantic...
Authors
Thomas J. O'Shea, Catherine A. Langtimm
Occurrence of active and inactive herbicide ingredients at selected sites in Iowa Occurrence of active and inactive herbicide ingredients at selected sites in Iowa
The objective of this study was to investigate the occurrence of herbicide active and inactive ingredients (primarily volatile organic compounds) at four selected sites in Iowa representing drain tiles, observation wells, or lysimeters. Water samples were collected monthly and bi-monthly before and after herbicide applications in 1991, respectively. They were analyzed for seven...
Authors
W. Wang, M. Liszewski, R. Buchmiller, K. Cherryholmes
Organochlorine residues in bat guano from nine Mexican caves, 1991 Organochlorine residues in bat guano from nine Mexican caves, 1991
Samples of bat guano, primarily from Mexican free-tailed bats (Tadarida brasiliensis), were collected at nine bat roosts in caves in northern and eastern Mexico and analysed for organochlorine residues. DDE, the most abundant residue found in each cave, was highest (0.99 p.p.m. dry weight) at Ojuela Cave, Durango. Other studies of DDE in bat guano indicate that this concentration is too...
Authors
D. R. Clark, A. Moreno-Valdez, M.A. Mora
Biogeography and status of the striped newt (Notophthalmus perstriatus) in Georgia, USA Biogeography and status of the striped newt (Notophthalmus perstriatus) in Georgia, USA
Abstract not supplied at this time
Authors
C.K. Dodd, L.V. LaClaire
Size-dependent, sex-dependent and seasonal changes in insulin-lige growth-factor-I in the loggerhead sea turtle Size-dependent, sex-dependent and seasonal changes in insulin-lige growth-factor-I in the loggerhead sea turtle
This study examines size-dependent, sex-dependent, and seasonal fluctuations in plasma insulin-like growth factor-I (IGF-I) concentrations in loggerhead sea turtles (Caretta caretta). Loggerhead turtles (n = 158) were captured in shrimp trawler nets during a 12-month survey in Cape Canaveral Channel, Florida. Plasma samples were analyzed using a validated heterologous radioimmunoassay...
Authors
D.A. Crain, A.B. Bolten, K.A. Bjorndal, L. J. Guillette, T. S. Gross
The rare newt of Trail Ridge The rare newt of Trail Ridge
Abstract not supplied at this time
Authors
C.K. Dodd
Flood frequency in Texas; calculation of peak-streamflow frequency at gaging stations Flood frequency in Texas; calculation of peak-streamflow frequency at gaging stations
In 1991, the U.S. Geological Survey (USGS) began a 5-year study of floods in Texas. The study, which is being done in cooperation with the Texas Department of Transportation, uses streamflow data collected at streamflow-gaging stations to assess Texas flood characteristics. Two major objectives of the study are to determine for unregulated, rural basins (1) the most reliable method to...
Authors
William H. Asquith, Raymond M. Slade
Freshwater mussels: a neglected and declining aquatic resource Freshwater mussels: a neglected and declining aquatic resource
Abstract not supplied at this time
Authors
J.D. Williams, R. J. Neves
Nonindigenous fish Nonindigenous fish
Abstract not supplied at this time
Authors
C.P. Boydstun, P.L. Fuller, J.D. Williams
United States Geological Survey, programs in North Carolina United States Geological Survey, programs in North Carolina
No abstract available.
Authors
Water Resources Division U.S. Geological Survey
Water resources data, North Carolina, water year 1994. Volume 2: Ground-water records Water resources data, North Carolina, water year 1994. Volume 2: Ground-water records
No abstract available.
Authors
D.G. Smith, E.D. George, P.L. Breton