Publications
Dive into our publications and explore the science from the Environmental Health Program (Toxic Substances Hydrology and Contaminant Biology).
GeoHEALTH-USGS Newsletter
GeoHEALTH-USGS Newsletter
The GeoHEALTH–USGS Newsletter—published since 2004—provides information on USGS science activities pertinent to safeguarding the health of fish, wildlife, domesticated animals, and people from environmental exposures to contaminants and pathogens.
Featured Science Activities
Featured Science Activities
Lean about our Featured Science Activities through our pages that highlight science studies, publications, and results.
Filter Total Items: 3785
Biodegration of chlorinated ethenes Biodegration of chlorinated ethenes
Biodegradation of chlorinated ethenes by naturally occurring or artificially enhanced processes is an important component of current site remediation strategies. At this writing, several microbial mechanisms for chlorinated ethene transformation and degradation have been identified. The purpose of this chapter is to briefly summarize the current understanding of those processes that lead...
Authors
Paul M. Bradley, Francis H. Chapelle
Ecology of amphibians and reptiles in a nutshell Ecology of amphibians and reptiles in a nutshell
No abstract available.
Authors
Greg Linder, C. Lehman, Joseph R. Bidwell
Epilogue: Ecotoxicology of amphibians and reptiles-where should be going and how do we get there? Epilogue: Ecotoxicology of amphibians and reptiles-where should be going and how do we get there?
No abstract available.
Authors
Greg Linder, C. Bishop, S. Krest, D. W. Sparling
Physiological ecology of amphibians and reptiles: Natural history and life history attributes framing chemical exposure in the field Physiological ecology of amphibians and reptiles: Natural history and life history attributes framing chemical exposure in the field
No abstract available.
Authors
Greg Linder, B. Palmer, Edward E. Little, Christopher L. Rowe, Paula F. P. Henry
Flood hydrology and methylmercury availability in Coastal Plain rivers Flood hydrology and methylmercury availability in Coastal Plain rivers
Mercury (Hg) burdens in top-predator fish differ substantially between adjacent South Carolina Coastal Plain river basins with similar wetlands coverage. In the Congaree River, floodwaters frequently originate in the Blue Ridge and Piedmont regions, where wetlands coverage and surface water dissolved methylmercury (MeHg) concentrations are low. Piedmont-driven flood events can lead to...
Authors
Paul M. Bradley, Celeste A. Journey, Francis H. Chapelle, Mark A. Lowery, Paul Conrads
Microbial and geochemical investigations of dissolved organic carbon and microbial ecology of native waters from the Biscayne and Upper Floridan Aquifers Microbial and geochemical investigations of dissolved organic carbon and microbial ecology of native waters from the Biscayne and Upper Floridan Aquifers
Groundwater resources in the United States are under ever-increasing demands for potable, irrigation, and recreational uses. Additionally, aquifer systems are being used or targeted for use as storage areas for treated surface waters and (or) groundwaters via injection (for example, aquifer storage and recovery). To date, the influence that the nutrients, including carbon, in the...
Authors
John T. Lisle, Ron W. Harvey, George R. Aiken, David W. Metge
Water-quality, bed-sediment, and biological data (October 2008 through September 2009) and statistical summaries of long-term data for streams in the Clark Fork basin, Montana Water-quality, bed-sediment, and biological data (October 2008 through September 2009) and statistical summaries of long-term data for streams in the Clark Fork basin, Montana
Water, bed sediment, and biota were sampled in streams from Butte to near Missoula, Montana, as part of a long-term monitoring program in the upper Clark Fork basin; additional water samples were collected in the Clark Fork basin from sites near Missoula downstream to near the confluence of the Clark Fork and Flathead River as part of a supplemental sampling program. The sampling...
Authors
Kent A. Dodge, Michelle I. Hornberger, Jessica Dyke
MTBE, TBA, and TAME attenuation in diverse hyporheic zones MTBE, TBA, and TAME attenuation in diverse hyporheic zones
Groundwater contamination by fuel-related compounds such as the fuel oxygenates methyl tert-butyl ether (MTBE), tert-butyl alcohol (TBA), and tert-amyl methyl ether (TAME) presents a significant issue to managers and consumers of groundwater and surface water that receives groundwater discharge. Four sites were investigated on Long Island, New York, characterized by groundwater...
Authors
James Landmeyer, Paul M. Bradley, D.A. Trego, K.G. Hale, J.E. Haas
Strong nonlinear photonic responses from microbiologically synthesized tellurium nanocomposites Strong nonlinear photonic responses from microbiologically synthesized tellurium nanocomposites
A new class of nanomaterials, namely microbiologically-formed nanorods composed of elemental tellurium [Te(0)] that forms unusual nanocomposites when combined with poly(m-phenylenevinylene-co-2,5-dioctoxy-phenylenevinylene) (PmPV) is described. These bio-nanocomposites exhibit excellent broadband optical limiting at 532 and 1064 nm. Nonlinear scattering, originating from the laser...
Authors
K.-S. Liao, Jingyuan Wang, S. Dias, J. Dewald, N.J. Alley, Shaun Baesman, Ronald S. Oremland, W.J. Blau, S.A. Curran
Improved hydrogeophysical characterization and monitoring through parallel modeling and inversion of time-domain resistivity andinduced-polarization data Improved hydrogeophysical characterization and monitoring through parallel modeling and inversion of time-domain resistivity andinduced-polarization data
Electrical geophysical methods have found wide use in the growing discipline of hydrogeophysics for characterizing the electrical properties of the subsurface and for monitoring subsurface processes in terms of the spatiotemporal changes in subsurface conductivity, chargeability, and source currents they govern. Presently, multichannel and multielectrode data collections systems can...
Authors
Timothy C. Johnson, Roelof J. Versteeg, Andy Ward, Frederick D. Day-Lewis, André Revil