Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 10351
Data for periphyton and water samples collected from the south Florida ecosystem, 1995 and 1996 Data for periphyton and water samples collected from the south Florida ecosystem, 1995 and 1996
This report presents data for samples of periphyton and water collected in 1995 and 1996 from Water Conservation Areas, the Big Cypress National Preserve, and the Everglades National Park in south Florida. Periphyton samples were analyzed for concentrations of total mercury, methylmercury, nitrogen, phosphorus, organic carbon, and inorganic carbon . Water-column samples collected on the...
Authors
N.S. Simon, T. Cox, R. Spencer
Lithostratigraphy, petrography, biostratigraphy, and strontium-isotope stratigraphy of the surficial aquifer system of western Collier County, Florida Lithostratigraphy, petrography, biostratigraphy, and strontium-isotope stratigraphy of the surficial aquifer system of western Collier County, Florida
In 1996, seven cores were recovered in western Collier County, southwestern Florida, to acquire subsurface geologic and hydrologic data to support ground-water modeling efforts. This report presents the lithostratigraphy, X-ray diffraction analyses, petrography, biostratigraphy, and strontium-isotope stratigraphy of these cores. The oldest unit encountered in the study cores is an...
Authors
Lucy E. Edwards, S.D. Weedman, Kathleen Simmons, T.M. Scott, G. L. Brewster-Wingard, S. E. Ishman, N.M. Carlin
Think before you sample data! Think before you sample data!
No abstract available.
Authors
P. E. Bourgeois, V. J. Sclafani, J.K. Summers, S. C. Robb, Beth A. Vairin
Suggestions for new and aspiring graduate students in wildlife science Suggestions for new and aspiring graduate students in wildlife science
The transition from an undergraduate to a graduate program can be a difficult experience for students. Many undergraduates are unfamiliar with the process of preparing for graduate school, especially the search for a graduate program. Once in graduate school, they may be unfamiliar with requirements (both written and unwritten) and expectations, and they may also lack the necessary...
Authors
Richard A. Fischer, Sammy L. King
Radar remote sensing of wetlands Radar remote sensing of wetlands
No abstract available.
Authors
Elijah Ramsey III
Observations on insect use of Chinese Tallow [Sapium sebiferum (L.) Roxb.] in Louisiana and Texas Observations on insect use of Chinese Tallow [Sapium sebiferum (L.) Roxb.] in Louisiana and Texas
No abstract available
Authors
Stephen R. Johnson, Larry K. Allain
Effects of vertebrate herbivores on soil processes, plant biomass, litter accumulation and soil elevation changes in a coastal marsh Effects of vertebrate herbivores on soil processes, plant biomass, litter accumulation and soil elevation changes in a coastal marsh
1 Submergence of coastal wetlands in Louisiana is currently rapid and widespread. A number of factors contribute to this loss of habitat, including the activities of herbivores. The objective of this study was to examine the effects of large mammals, predominantly nutria and wild boar, on processes controlling soil elevation in coastal marshes. 2 Effects of herbivores on soil and...
Authors
Mark Ford, James B. Grace
Both contaminants and habitat limit Neosho madtom (Noturus Placidus) numbers in the Spring River, a midwestern warmwater stream effected by runoff from historic zinc and lead mining Both contaminants and habitat limit Neosho madtom (Noturus Placidus) numbers in the Spring River, a midwestern warmwater stream effected by runoff from historic zinc and lead mining
No abstract available.
Authors
Mark L. Wildhaber, Ann L. Allert, Christopher J. Schmitt
Occurrence of acetanilide herbicide metabolites in tile runoff and ground Occurrence of acetanilide herbicide metabolites in tile runoff and ground
No abstract available.
Authors
E.M. Thurman, D.W. Kolpin, S. J. Kalkhoff, P. J. Phillips
Modern and historical bathymetry of Florida Bay Modern and historical bathymetry of Florida Bay
No abstract available.
Authors
Mark Hansen, Nancy DeWitt
Nitrate contamination of the upper aquifer in the Manatí-Vega Baja area, Puerto Rico Nitrate contamination of the upper aquifer in the Manatí-Vega Baja area, Puerto Rico
No abstract available.
Authors
Carlos Conde-Costas, Fernando Gomez-Gomez