A simple method for calculating growth rates of petroleum hydrocarbon plumes
B.A. Bekins, I.M. Cozzarelli, G.P. Curtis
2005, Ground Water (43) 817-826
Consumption of aquifer Fe(III) during biodegradation of ground water contaminants may result in expansion of a contaminant plume, changing the outlook for monitored natural attenuation. Data from two research sites contaminated with petroleum hydrocarbons show that toluene and xylenes degrade under methanogenic conditions, but the benzene...
Quasi‐steady centrifuge method for unsaturated hydraulic properties
Maria C. Caputo, John R. Nimmo
2005, Water Resources Research (41)
We have developed the quasi‐steady centrifuge (QSC) method as a variation of the steady state centrifuge method that can be implemented simply and inexpensively with greater versatility in terms of sample size and other features. It achieves these advantages by somewhat relaxing the criterion for steadiness of flow through the...
Effective discharge analysis of ecological processes in streams
Martin W. Doyle, Emily H. Stanley, David L. Strayer, Robert B. Jacobson, John C. Schmidt
2005, Water Resources Research (41)
Discharge is a master variable that controls many processes in stream ecosystems. However, there is uncertainty of which discharges are most important for driving particular ecological processes and thus how flow regime may influence entire stream ecosystems. Here the analytical method of effective discharge from fluvial geomorphology is used to...
Does biofilm contribute to diel cycling of Zn in High Ore Creek, Montana?
J.M. Morris, D. A. Nimick, A.M. Farag, J.S. Meyer
2005, Biogeochemistry (76) 233-259
Concentrations of metals cycle daily in the water column of some mining-impacted streams in the Rocky Mountains of the western USA. We hypothesized that biofilm in High Ore Creek, Montana, USA, sorbs and releases Zn on a diel cycle, and this uptake-and-release cycle controls the total and dissolved (0.45-μm filtered)...
Perchlorate isotope forensics
J.K. Böhlke, N.C. Sturchio, B. Gu, J. Horita, G.M. Brown, W.A. Jackson, J. Batista, P.B. Hatzinger
2005, Analytical Chemistry (77) 7838-7842
Perchlorate has been detected recently in a variety of soils, waters, plants, and food products at levels that may be detrimental to human health. These discoveries have generated considerable interest in perchlorate source identification. In this study, comprehensive stable isotope analyses (37Cl/35Cl and 18O/17O/16O) of perchlorate from known synthetic and natural...
Urbanization effects on stream habitat characteristics in Boston, Massachusetts; Birmingham, Alabama; and Salt Lake City, Utah
T.M. Short, E.M.P. Giddings, H. Zappia, J.F. Coles
2005, Book chapter, Effects of Urbanization on Stream Ecosystems
Relations between stream habitat and urban land-use intensity were examined in 90 stream reaches located in or near the metropolitan areas of Salt Lake City, Utah (SLC); Birmingham, Alabama (BIR); and Boston, Massachusetts (BOS). Urban intensity was based on a multi-metric index (urban intensity index or UII) that included measures...
A method adapting microarray technology for signature tagged mutagenesis of Dusulfovibrio dusulfuricans G20 and Shewanella oneidensis MR-1 in anaerobic sediment survival experiments
Jennifer L. Groh, Qingwei Luo, Jimmy D. Ballard, Lee R. Krumholz
2005, Applied and Environmental Microbiology (71) 7064-7074
Signature-tagged mutagenesis (STM) is a powerful technique that can be used to identify genes expressed by bacteria during exposure to conditions in their natural environments. To date, there have been no reports of studies in which this approach was used to study organisms of environmental, rather than pathogenic, significance. We...
Role for Fe(III) minerals in nitrate-dependent microbial U(IV) oxidation
John M. Senko, Yasser Mohamed, Thomas A. Dewers, Lee R. Krumholz
2005, Environmental Science & Technology (39) 2529-2536
Microbiological reduction of soluble U(VI) to insoluble U(IV) is a means of preventing the migration of that element in groundwater, but the presence of nitrate in U(IV)-containing sediments leads to U(IV) oxidation and remobilizaton. Nitrite or iron(III) oxyhydroxides may oxidize U(IV) under nitrate-reducing conditions, and we determined the rate and...
Evaluating water management strategies with the Systems Impact Assessment Model: SIAM version 4
John M. Bartholow, John Heasley, Blair Hanna, Jeff Sandelin, Marshall Flug, Sharon Campbell, Jim Henriksen, Aaron Douglas
2005, Open-File Report 2003-82
Water from many of California's coastal rivers has been used for a wide variety of development ventures, including major agricultural diversions, hydropower generation, and contaminant assimilation from industry, agriculture and logging. Anthropogenic impacts often degrade water quality and decrease the quantity and quality of aquatic habitat. Reallocating streamflow away from...
The microbiol ecology and physiology of aryl dehalogenation reactions and implications for bioremediation
J.M. Suflita, G.T. Townsend
L. Young, C. Cerniglia, editor(s)
2005, Book chapter, Microbial transformation and degradation of toxic organic chemicals
No abstract available. ...
Water quality in Big Cypress National Preserve and Everglades National Park — Trends and spatial characteristics of selected constituents
Ronald L. Miller, Benjamin F. McPherson, Robert Sobczak, Christine Clark
2004, Water-Resources Investigations Report 2003-4249
Seasonal changes in water levels and flows in Big Cypress National Preserve (BICY) and Everglades National Park (EVER) affect water quality. As water levels and flows decline during the dry season, physical, geochemical and biological processes increase the breakdown of organic materials and the build-up of organic waste, nutrients, and...
Surface-Water and Ground-Water Interactions in the Central Everglades, Florida
Judson W. Harvey, Jessica T. Newlin, James M. Krest, Jungyill Choi, Eric A. Nemeth, Steven L. Krupa
2004, Scientific Investigations Report 2004-5069
Recharge and discharge are hydrological processes that cause Everglades surface water to be exchanged for subsurface water in the peat soil and the underlying sand and limestone aquifer. These interactions are thought to be important to water budgets, water quality, and ecology in the Everglades. Nonetheless, relatively few studies of...
Physical habitat dynamics in four side-channel chutes, lower Missouri River
Robert B. Jacobson, Harold E. Johnson, Mark S. Laustrup, Gary J. D’Urso, Joanna M. Reuter
2004, Open-File Report 2004-1071
Construction of the side-channel chutes has become a popular means to rehabilitate habitate of the Lower Missouri River. We studied various aspects of hydrology, hydraulics, and geomorphology of four side-channel chutes to document a range of existing conditions in the Lower Missouri River. The Cranberry Bend side-channel chute has existed...
Application of cross-borehole radar to monitor fieldscale vegetable old injection experiments for biostimulation
John W. Lane Jr., Frederick D. Day-Lewis, Roelof J. Versteeg, C.C. Casey, Peter K. Joesten
2004, Conference Paper, Proceedings: Symposium on the Application of Geophysics to Engineering and Environmental Problems (SAGEEP)
Cross-borehole radar methods were used to monitor a field-scale biostimulation pilot project at the Anoka County Riverfront Park (ACP), located downgradient of the Naval Industrial Reserve Ordnance Plant, in Fridley, Minnesota. The goal of the pilot project is to evaluate biostimulation using emulsified vegetable oil to treat ground water...
Use of borehole radar methods and borehole geophysical logs to monitor a field-scale vegetable oil biostimulation pilot project at Fridley, Minnesota
John W. Lane Jr., Clifton C. Casey, Frederick D. Day-Lewis, A. Witten, Roelof J. Versteeg
2004, Conference Paper, Proceedings of the Fourth International Conference on Remediation of Chlorinated and Recalcitrant Compounds
Cross-hole and surface-to-borehole radar and conventional borehole geophysical logs were used to monitor subsurface injections of vegetable oil emulsion conducted as part of a field-scale biostimulation pilot project at the Anoka County Riverfront Park (ACP), located downgradient of the Naval Industrial Reserve Ordnance Plant (NIROP), in Fridley, Minnesota. The pilot...
Scientific advances provide opportunities to improve pediatric environmental health
Michael M. Reddy, Micaela B. Reddy, Carol F. Reddy
2004, Journal of Pediatrics (145) 153-156
The health consequences of contaminants in the environment, with respect to the health of children and infants, recently have been dramatically brought to public attention by the motion pictures Erin Brockovich and A Civil Action. These productions focused public attention on the potential link between water contaminants and pediatric health,...
Climate change, growing season length, and transpiration: Plant response could alter hydrologic regime
Thomas G. Huntington
2004, Plant Biology (6) 651-653
No abstract available...
Herpetofaunal inventories of the National Parks of South Florida and the Caribbean: Volume I. Everglades National Park
Kenneth G. Rice, J. Hardin Waddle, Marquette E. Crockett, Brian M. Jeffery, H. Frankin Percival
2004, Open-File Report 2004-1065
Amphibian declines and extinctions have been documented around the world, often in protected natural areas. Concern for this alarming trend has prompted the U.S. Geological Survey and the National Park Service to document all species of amphibians that occur within U.S. National Parks and to search for any signs that...
Nutrient controls on biocomplexity of mangrove ecosystems
Karen L. McKee
2004, Fact Sheet 2004-3124
Mangrove forests are important coastal ecosystems that provide a variety of ecological and societal services. These intertidal, tree-dominated communities along tropical coastlines are often described as “simple systems,” compared to other tropical forests with larger numbers of plant species and multiple understory strata; however, mangrove ecosystems have complex trophic structures,...
SUTRA-MS: A version of SUTRA modified to simulate heat and multiple-solute transport
Hughes, D. Joseph, Ward E. Sanford
2004, Open-File Report 2004-1207
No abstract available....
Anthropogenic and natural variation in ridge and slough pollen assemblages
C.E. Bernhardt, Debra A. Willard, M. Marot, C. W. Holmes
2004, Open-File Report 2004-1448
We present pollen evidence documenting the response of sawgrass ridge and slough systems of the Florida Everglades to hydrologic changes during the last 3,500 years. Sediment cores and surface samples were collected in three transects across sawgrass ridges and sloughs in Water Conservation Area 3A to determine the age of...
Effects of Abandoned Coal-Mine Drainage on Streamflow and Water Quality in the Mahanoy Creek Basin, Schuylkill, Columbia, and Northumberland Counties, Pennsylvania, 2001
Charles A. Cravotta III,
2004, Scientific Investigations Report 2004-5291
This report assesses the contaminant loading, effects to receiving streams, and possible remedial alternatives for abandoned mine drainage (AMD) within the Mahanoy Creek Basin in east-central Pennsylvania. The Mahanoy Creek Basin encompasses an area of 157 square miles (407 square kilometers) including approximately 42 square miles (109 square kilometers) underlain...
Quantification of Hydrologic Processes and Assessment of Rainfall-Runoff Models in Miami-Dade County, Florida
David A. Chin, Raul D. Patterson
2004, Scientific Investigations Report 2004-5191
Chloroethene biodegradation potential in the "lower" contaminant plume, River Terrace RV Park, Soldotna, Alaska
Paul M. Bradley, Frances H. Chapelle
2004, Open-File Report 2004-1427
No abstract available....
Chloroethene biodegradation potential, ADOT/PF Peger Road Maintenance Facility, Fairbanks, Alaska
Paul M. Bradley, Frances H. Chapelle
2004, Open-File Report 2004-1428
A series of 14C-radiotracer-based microcosm experiments were conducted to assess: 1) the extent, rate and products of microbial dechlorination of trichloroethene (TCE), cis-dichloroethene (cis-DCE) and vinyl chloride (VC) in sediments at the Peger Road site; 2) the effect of three electron donor amendments (molasses, shrimp and crab chitin, and 'Hydrogen...
