Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 10420
An evaluation of bone growth- layer counts as an age-determination technique in Florida manatees An evaluation of bone growth- layer counts as an age-determination technique in Florida manatees
Abstract not supplied at this time
Authors
M. Marmontel, T. J. O'Shea, S.R. Humphrey
Manatee grazing impacts on seagrasses in Hobe Sound and Jupiter Sound in southeast Florida during the winter of 1988-1989 Manatee grazing impacts on seagrasses in Hobe Sound and Jupiter Sound in southeast Florida during the winter of 1988-1989
Abstract not supplied at this time
Authors
L.W. Lefebvre, J. A. Powell
Don't release exotic fish Don't release exotic fish
Abstract not supplied at this time
Authors
Dawn P. Jennings, J.D. Williams
Determination and occurrence of AHH-active polychlorinated biphenyls, 2,3,7,8-tetrachloro-p-dioxin and 2,3,7,8-tetrachlorodibenzofuran in Lake Michigan sediment and biota. The question of their relative toxicological significance Determination and occurrence of AHH-active polychlorinated biphenyls, 2,3,7,8-tetrachloro-p-dioxin and 2,3,7,8-tetrachlorodibenzofuran in Lake Michigan sediment and biota. The question of their relative toxicological significance
An analytical procedure has been developed for the determination of the 18 PCB congeners which are inducers of methylcholanthrene-like mixed function oxidase activity in animals and include the most toxic PCBs. Determinations of the toxic PCB congeners in samples of eggs of predatory fish and piscivorous birds of the Great Lakes and in Aroclor mixtures demonstrate that the apparent toxic...
Authors
Lawrence M. Smith, Ted R. Schwartz, Kevin Feltz, Timothy J. Kubiak
Water resources data Texas, water year 1989, volume 3. Colorado River basin, Lavaca River basin, Guadalupe River basin, Nueces River basin, Rio Grande basin, and intervening coastal basins Water resources data Texas, water year 1989, volume 3. Colorado River basin, Lavaca River basin, Guadalupe River basin, Nueces River basin, Rio Grande basin, and intervening coastal basins
No abstract available.
Authors
H.D. Buckner, W.L. Shelby, H.J. Davidson
Relation between urbanization and water quality of streams in the Austin area, Texas Relation between urbanization and water quality of streams in the Austin area, Texas
Selected water-quality properties and constituents of stormflow and base flow were compared to determine the relation between the degree of urbanization and the water quality in a drainage basin. Samples were collected during three flow categories (rising stage and falling stage of stormflow and base flow) at 18 sites on 11 streams. The degree of urbanization is indicated by grouping the...
Authors
J.E. Veenhuis, R.M. Slade
Water resources data Texas, water year 1989, volume 2. San Jacinto River basin, Brazos River basin, San Bernard River basin, and intervening coastal basins Water resources data Texas, water year 1989, volume 2. San Jacinto River basin, Brazos River basin, San Bernard River basin, and intervening coastal basins
No abstract available.
Authors
H.D. Buckner, W.L. Shelby, H.J. Davidson
Water resources data Texas, water year 1989, volume 1. Arkansas River basin, Red River basin, Sabine River basin, Neches River basin, Trinity River Basin, and intervening coastal basins Water resources data Texas, water year 1989, volume 1. Arkansas River basin, Red River basin, Sabine River basin, Neches River basin, Trinity River Basin, and intervening coastal basins
No abstract available.
Authors
H.D. Buckner, W.L. Shelby, H.J. Davidson
Encephalization quotients and life-history traits in the Sirenia Encephalization quotients and life-history traits in the Sirenia
Relative brain size in the Sirenia is unusually small. Encephalization quotients are 0.27 for Florida manatees (Trichechus manatus) and 0.38 for dugongs (Dugong dugon). Estimates for Steller's sea cow (Hydrodamalis gigas) range from 0.12 to 0.19. These values are among the lowest known for Recent mammals, and seemingly have changed little since the Eocene. A body plan specialized for the...
Authors
T. J. O'Shea, R.L. Reep
Reconnaissance surficial geologic map of the mountainous parts of Loudoun County, Virginia Reconnaissance surficial geologic map of the mountainous parts of Loudoun County, Virginia
No abstract available.
Authors
Robert B. Jacobson, R. C. McDowell, D.J. Milton, Wayne L. Newell, J. S. Pomeroy, J.S. Schindler, C.S. Southworth
National contaminant biomonitoring program: Residues of organochlorine chemicals in U.S. Freshwater Fish, 1976–1984 National contaminant biomonitoring program: Residues of organochlorine chemicals in U.S. Freshwater Fish, 1976–1984
The U.S. Fish and Wildlife Service periodically determines concentrations of organochlorine chemicals in freshwater fish collected from a nationwide network of stations as part of the National Contaminant Biomonitoring Program (NCBP, formerly a part of the National Pesticide Monitoring Program). From late 1984 to early 1985, a total of 321 composite fish samples were collected from 112...
Authors
Christopher J. Schmitt, Jim L. Zajicek, Paul H. Peterman
Hydrogeology of aquifers in Cretaceous and younger rocks in the vicinity of Onslow and southern Jones counties, North Carolina Hydrogeology of aquifers in Cretaceous and younger rocks in the vicinity of Onslow and southern Jones counties, North Carolina
Unconsolidated sediments in Onslow and Jones Counties, North Carolina overlie crystalline basement rocks and range in thickness from about 700 ft to more than 1,800 ft, thickening toward the east. This material is composed of permeable sand and limestone interlayered with relatively impermeable clay and silt beds. Sediments are divided into two groups: aquifers in Quaternary-, and...
Authors
W.L. Lyke, M. D. Winner