Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 10379
Invasive nonindigenous species: a major threat to freshwater biodiversity Invasive nonindigenous species: a major threat to freshwater biodiversity
No abstract available.
Authors
J.D. Williams, Gary K. Meffe
Mississippi Basin Carbon Project; upland soil database for sites in Yazoo Basin, northern Mississippi Mississippi Basin Carbon Project; upland soil database for sites in Yazoo Basin, northern Mississippi
The conversion of land from its native state to an agricultural use commonly results in a significant loss of soil carbon (Mann, 1985; Davidson and Ackerman, 1993). Globally, this loss is estimated to account for as much as 1/3 of the net CO2 emissions for the period of 1850 to 1980 (Houghton et al, 1983). Roughly 20 to 40 percent of original soil carbon is estimated to be lost as CO2 as...
Authors
J.W. Harden, T. L. Fries, T.G. Huntington
Discovery of a second population of white-collared seedeaters, Sporophila torqueola (Passeriformes: emberizidae) along the Rio Grande of Texas Discovery of a second population of white-collared seedeaters, Sporophila torqueola (Passeriformes: emberizidae) along the Rio Grande of Texas
The range of the white-collared seedeater (Sporophila torqueola), a tropical grassland species, extends from Central America northward along both coasts of Mexico (Eitniear, 1997), including Tamaulipas and Nuevo Leon (Howell and Webb, 1995). White-collared seedeaters historically occurred commonly in extreme southern Texas (Oberholser, 1974; Rappole and Blacklock, 1994). However, since...
Authors
Marc C. Woodin, Mary K. Skoruppa, Gene W. Blacklock, Graham C. Hickman
Nutrients, pesticides, and pesticide metabolites discharged to the Mississippi River from Eastern Iowa Watersheds Nutrients, pesticides, and pesticide metabolites discharged to the Mississippi River from Eastern Iowa Watersheds
No abstract available.
Authors
D.J. Schnoebelen, Kent Becher
Comparison of water quality in four small watersheds containing animal feeding operations in Iowa Comparison of water quality in four small watersheds containing animal feeding operations in Iowa
No abstract available.
Authors
Kent Becher, Kimberlee K.B. Akers
Occurrence of acetochlor and acetochlor metabolites in alluvial aquifers in Iowa Occurrence of acetochlor and acetochlor metabolites in alluvial aquifers in Iowa
No abstract available.
Authors
Stephen J. Kalkhoff, Mark E. Savoca, Eric M. Sadorf, Dana W. Kolpin, Earl M. Thurman
Finding minimal concentrations of herbicides in ground water? Try looking for the degradates Finding minimal concentrations of herbicides in ground water? Try looking for the degradates
No abstract available.
Authors
D.W. Kolpin, E.M. Thurman, S. M. Linhart
Occurrence and distribution of chloroacetanilide and triazine pesticide metabolites in streams in eastern Iowa Occurrence and distribution of chloroacetanilide and triazine pesticide metabolites in streams in eastern Iowa
No abstract available.
Authors
Stephen J. Kalkhoff, E.M. Thurman
Winter ecology of the endangered golden-cheeked warbler Winter ecology of the endangered golden-cheeked warbler
We studied the ecology of the Golden-cheeked Warbler (Dendroica chrysoparia) during three winter seasons, 1995-1998, in Honduras, Guatemala, and Mexico. Individuals of this species occurred almost exclusively as members of mixed-species flocks, occupying sites with greater densities of encino oak and ground cover and fewer pines than random sites. Most foraging observations were recorded...
Authors
John H. Rappole, David I. King, Wylie C. Barrow
Radium in ground water from public-water supplies in northern Illinois Radium in ground water from public-water supplies in northern Illinois
Concentrations of the naturally occurring radioactive isotopes radium-226 and radium-228 in excess of the U.S. Environmental Protection Agency standard for drinking water of 5 picocuries per liter have been detected in water from deep aquifers used for public supply that underly parts of northern Illinois. Radium, a known carcinogen, has the potential to cause bone and sinus cancer if...
Authors
Robert T. Kay
Physical stratigraphy, paleontology, and magnetostratigraphy of the USGS-Santee Coastal Reserve core (CHN-803), Charleston County, South Carolina Physical stratigraphy, paleontology, and magnetostratigraphy of the USGS-Santee Coastal Reserve core (CHN-803), Charleston County, South Carolina
The Santee Coastal Reserve core, a 545-ft-deep corehole in northeastern Charleston County, South Carolina, recovered sediments of Late Cretaceous, Paleocene, Eocene, and Quaternary age. The deepest sediments, the Donoho Creek Formation (545-475.7 ft), consist of 69.3 ft of muddy calcareous sand of marine origin. This formation is placed within the upper Campanian calcareous nannofossil...
Authors
Lucy E. Edwards, G. S. Gohn, D.C. Prowell, L.M. Bybell, L. P. Bardot, J. V. Firth, B.T. Huber, N. O. Frederiksen, K.G. MacLeod