Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 10380
Relating streamflow characteristics to specialized insectivores in the Tennessee River Valley: a regional approach Relating streamflow characteristics to specialized insectivores in the Tennessee River Valley: a regional approach
Analysis of hydrologic time series and fish community data across the Tennessee River Valley identified three hydrologic metrics essential to habitat suitability and food availability for insectivorous fish communities in streams of the Tennessee River Valley: constancy (flow stability or temporal invariance), frequency of moderate flooding (frequency of habitat disturbance), and rate of
Authors
Rodney R. Knight, M. Brian Gregory, Amy K. Wales
Conservation: saving Florida's manatees Conservation: saving Florida's manatees
Robert K. Bonde of the U.S. Geological Survey writes about the protected population of manatees in Crystal River, Florida, including information about the threats they face as they migrate in and out of protected waters. Photographer Carol Grant shares images of "Angel," a newborn manatee she photographed early one winter morning.
Authors
Robert K. Bonde
Summary of aquifer test data for Arkansas – 1940-2006 Summary of aquifer test data for Arkansas – 1940-2006
As demands on Arkansas's ground water continue to increase, decision-makers need all available information to ensure the sustainability of this important natural resource. From 1940 through 2006, the U.S. Geological Survey has conducted over 300 aquifer tests in Arkansas. Much of these data never have been published. This report presents the results from 206 of these aquifer tests from...
Authors
Aaron L. Pugh
Estimation of groundwater and nutrient fluxes to the Neuse River estuary, North Carolina Estimation of groundwater and nutrient fluxes to the Neuse River estuary, North Carolina
A study was conducted between April 2004 and September 2005 to estimate groundwater and nutrient discharge to the Neuse River estuary in North Carolina. The largest groundwater fluxes were observed to occur generally within 20 m of the shoreline. Groundwater flux estimates based on seepage meter measurements ranged from 2.86??108 to 4.33??108 m3 annually and are comparable to estimates...
Authors
T.B. Spruill, J.F. Bratton
A national reconnaissance for pharmaceuticals and other organic wastewater contaminants in the United States - II) Untreated drinking water sources A national reconnaissance for pharmaceuticals and other organic wastewater contaminants in the United States - II) Untreated drinking water sources
Numerous studies have shown that a variety of manufactured and natural organic compounds such as pharmaceuticals, steroids, surfactants, flame retardants, fragrances, plasticizers and other chemicals often associated with wastewaters have been detected in the vicinity of municipal wastewater discharges and livestock agricultural facilities. To provide new data and insights about the...
Authors
M. J. Focazio, D.W. Kolpin, K.K. Barnes, E. T. Furlong, M. T. Meyer, S.D. Zaugg, L. B. Barber, M.E. Thurman
Temperate freshwater wetlands: Response to gradients in moisture regime, human alterations and economic status Temperate freshwater wetlands: Response to gradients in moisture regime, human alterations and economic status
No abstract available
Authors
Mark M. Brinson, Barbara E. Bedford, Beth Middleton, Jos T. A. Verhoeven
Estimated Water Use in Puerto Rico, 2005 Estimated Water Use in Puerto Rico, 2005
Water-use data were compiled for the 78 municipios of the Commonwealth of Puerto Rico for 2005. Five offstream categories were considered: public-supply water withdrawals and deliveries, domestic self-supplied water use, industrial self-supplied ground-water withdrawals, crop irrigation water use, and thermoelectric power freshwater use. One water-use category also was considered: power...
Authors
Wanda L. Molina-Rivera, Fernando Gómez-Gómez
Biological communities and geomorphology of patch reefs in Biscayne National Park, Florida, U.S.A. Biological communities and geomorphology of patch reefs in Biscayne National Park, Florida, U.S.A.
Coral reef ecosystem management benefits from continual, quantitative assessment of the resources being managed, plus assessment of factors that affect distribution patterns of organisms in the ecosystem. In this study, we investigated the relationships among physical, benthic, and fish variables in effort to help explain the distribution patterns of ecologically and economically...
Authors
Ilsa B. Kuffner, John Brock, Rikki Grober-Dunsmore, T. Don Hickey, Victor Bonito, Jeremy E. Bracone, C. Wayne Wright
Potential for 4-n-nonylphenol biodegradation in stream sediments Potential for 4-n-nonylphenol biodegradation in stream sediments
The potential for in situ biodegradation of 4-nonylphenol (4-NP) was investigated in three hydrologically distinct streams impacted by wastewater treatment plants (WWTPs) in the United States. Microcosms were prepared with sediments from each site and amended with [U-ring-14C]4-n-nonylphenol (4-n-NP) as a model test substrate. Microcosms prepared with sediment collected upstream of the...
Authors
P. M. Bradley, L. B. Barber, D.W. Kolpin, P.B. McMahon, F. H. Chapelle
Cross-kingdom amplification using Bacteria-specific primers: Complications for studies of coral microbial ecology Cross-kingdom amplification using Bacteria-specific primers: Complications for studies of coral microbial ecology
PCR amplification of pure bacterial DNA is vital to the study of bacterial interactions with corals. Commonly used Bacteria-specific primers 8F and 27F paired with the universal primer 1492R amplify both eukaryotic and prokaryotic rRNA genes. An alternative primer set, 63F/1542R, is suggested to resolve this problem.
Authors
Julia P. Galkiewicz, Christina A. Kellogg
Where temperate meets tropical: Multi-factorial effects of elevated CO2, nitrogen enrichment, and competition on a mangrove-salt marsh community Where temperate meets tropical: Multi-factorial effects of elevated CO2, nitrogen enrichment, and competition on a mangrove-salt marsh community
Our understanding of how elevated CO2 and interactions with other factors will affect coastal plant communities is limited. Such information is particularly needed for transitional communities where major vegetation types converge. Tropical mangroves (Avicennia germinans) intergrade with temperate salt marshes (Spartina alterniflora) in the northern Gulf of Mexico, and this transitional...
Authors
K.L. McKee, J.E. Rooth
Ecology of coral reefs in the US Virgin Islands Ecology of coral reefs in the US Virgin Islands
The US Virgin Islands (USVI ) in the northeastern Caribbean, consist of St. Croix (207 km2), St. Thomas (83 km2), St. John (52 km2) and numerous smaller islands (Dammann and Nellis 1992). They are part of the Lesser Antilles and Leeward Islands on the eastern boundary of the Caribbean plate (Fig. 8.1). An extensive platform underlies St. Thomas and St. John and connects these islands to...
Authors
Caroline S. Rogers, Jeff Miller, Erinn Muller, Peter J Edmunds, Richard S. Nemeth, James P. Beets, Alan M. Friedlander, Tyler B. Smith, Rafe Boulon, Christopher F.G. Jeffrey, Charles Menza, Chris Caldow, Nasseer Idrisi, Barbara Kojis, Mark E. Monaco, Anthony S. Spitzack, Elizabeth H. Gladfelter, John C. Ogden, Zandy M Hillis-Star, Ian Lundgren, William B. Schill, Ilsa B. Kuffner, Laurie L. Richardson, Barry E. Devine, Joshua D. Voss