Ammonia-oxidizing bacterial community composition in estuarine and oceanic environments assessed using a functional gene microarray
B.B. Ward, D. Eveillard, Julie D. Kirshtein, J.D. Nelson, Mary A. Voytek, G. A. Jackson
2007, Environmental Microbiology (9) 2522-2538
The relationship between environmental factors and functional gene diversity of ammonia-oxidizing bacteria (AOB) was investigated across a transect from the freshwater portions of the Chesapeake Bay and Choptank River out into the Sargasso Sea. Oligonucleotide probes (70-bp) designed to represent the diversity of ammonia monooxygenase (amoA) genes from Chesapeake Bay...
Effects of sorbate speciation on sorption of selected sulfonamides in three loamy soils
Sudarshan T. Kurwadkar, Craig D. Adams, Michael T. Meyer, Dana W. Kolpin
2007, Journal of Agricultural and Food Chemistry (55) 1370-1376
Sorption of sulfamethazine (SMN) and sulfathiazole (STZ) was investigated in three soils, a North Carolina loamy sand, an Iowa sandy loam, and a Missouri loam, under various pH conditions. A significant increase in the sorption coefficient (KD) was observed in all three soils, as the sulfonamides converted from an anionic...
Efficiency of conventional drinking-water-treatment processes in removal of pharmaceuticals and other organic compounds
Paul E. Stackelberg, Jacob Gibs, Edward T. Furlong, Michael T. Meyer, Steven D. Zaugg, R.L. Lippincott
2007, Science of the Total Environment (377) 255-272
Samples of water and sediment from a conventional drinking-water-treatment (DWT) plant were analyzed for 113 organic compounds (OCs) that included pharmaceuticals, detergent degradates, flame retardants and plasticizers, polycyclic aromatic hydrocarbons (PAHs), fragrances and flavorants, pesticides and an insect repellent, and plant and animal steroids. 45 of these compounds were detected...
Ordination of breeding birds in relation to environmental gradients in three southeastern United States floodplain forests
J.S. Wakeley, M.P. Guilfoyle, T. J. Antrobus, R.A. Fischer, W.C. Barrow Jr., P.B. Hamel
2007, Wetlands Ecology and Management (15) 417-439
We used an ordination approach to identify factors important to the organization of breeding bird communities in three floodplains: Cache River, Arkansas (AR), Iatt Creek, Louisiana (LA), and the Coosawhatchie River, South Carolina (SC), USA. We used 5-min point counts to sample birds in each study area each spring from...
Influence of groundwater pumping on streamflow restoration following upstream dam removal
James E. Constantz, Hedeff I. Essaid
2007, Hydrological Processes (21) 2823-2834
We compared streamflow in basins under the combined impacts of an upland dam and groundwater pumping withdrawals, by examining streamflow in the presence and absence of each impact. As a qualitative analysis, inter-watershed streamflow comparisons were performed for several rivers flowing into the east side...
Cleats and their relation to geologic lineaments and coalbed methane potential in Pennsylvanian coals in Indiana
W. Solano-Acosta, Maria Mastalerz, A. Schimmelmann
2007, International Journal of Coal Geology (72) 187-208
Cleats and fractures in Pennsylvanian coals in southwestern Indiana were described, statistically analyzed, and subsequently interpreted in terms of their origin, relation to geologic lineaments, and significance for coal permeability and coalbed gas generation and storage. These cleats can be interpreted as the result of superimposed endogenic and exogenic processes....
DIN retention-transport through four hydrologically connected zones in a headwater catchment of the Upper Mississippi River
F.J. Triska, J.H. Duff, R.W. Sheibley, A. P. Jackman, R.J. Avanzino
2007, Journal of the American Water Resources Association (43) 60-71
Dissolved inorganic nitrogen (DIN) retention-transport through a headwater catchment was synthesized from studies encompassing four distinct hydrologic zones of the Shingobee River Headwaters near the origin of the Mississippi River. The hydrologic zones included: (1) hillslope ground water (ridge to bankside riparian); (2) alluvial...
Forensic fingerprinting of oil-spill hydrocarbons in a methanogenic environment-Mandan, ND and Bemidji, MN
Frances D. Hostettler, Y. Wang, Y. Huang, W. Cao, Barbara A. Bekins, Colleen E. Rostad, C. F. Kulpa, Andrew E. Laursen
2007, Environmental Forensics (8) 139-153
In recent decades forensic fingerprinting of oil-spill hydrocarbons has emerged as an important tool for correlating oils and for evaluating their source and character. Two long-term hydrocarbon spills, an off-road diesel spill (Mandan, ND) and a crude oil spill (Bemidji, MN) experiencing methanogenic biodegradation were previously shown to be undergoing...
Ecological linkages between headwaters and downstream ecosystems: Transport of organic matter, invertebrates, and wood down headwater channels
M.S. Wipfli, J.S. Richardson, R.J. Naiman
2007, Journal of the American Water Resources Association (43) 72-85
Headwater streams make up a large proportion of the total length and watershed area of fluvial networks, and are partially characterized by the large volume of organic matter (large wood, detritus, and dissolved organic matter) and invertebrate inputs from the riparian forest, relative to stream size. Much of those inputs...
Diurnal variability in riverine dissolved organic matter composition determined by in situ optical measurement in the San Joaquin River (California, USA)
R.G.M. Spencer, B.A. Pellerin, B.A. Bergamaschi, B.D. Downing, T.E.C. Kraus, D.R. Smart, R.A. Dahlgren, P.J. Hernes
2007, Hydrological Processes (21) 3181-3189
Dissolved organic matter (DOM) concentration and composition in riverine and stream systems are known to vary with hydrological and productivity cycles over the annual and interannual time scales. Rivers are commonly perceived as homogeneous with respect to DOM concentration and composition, particularly under steady flow conditions over short time periods....
Responses of hydrochemical inorganic ions in the rainfall-runoff processes of the experimental catchments and its significance for tracing
W.-Z. Gu, J.-J. Lu, X. Zhao, N.E. Peters
2007, Shuikexue Jinzhan/Advances in Water Science (18) 1-7
Aimed at the rainfall-runoff tracing using inorganic ions, the experimental study is conducted in the Chuzhou Hydrology Laboratory with special designed experimental catchments, lysimeters, etc. The various runoff components including the surface runoff, interflow from the unsaturated zone and the groundwater flow from saturated zone were monitored hydrometrically. Hydrochemical inorganic...
A field investigation of phreatophyte‐induced fluctuations in the water table
James J. Butler Jr., Gerard J. Kluitenberg, Donald O. Whittemore, Steven P. Loheide II, Wei Jin, Mark A. Billinger, Xiaoyong Zhan
2007, Water Resources Research (43)
Hydrographs from shallow wells in vegetated riparian zones frequently display a distinctive pattern of diurnal water table fluctuations produced by variations in plant water use. A multisite investigation assessed the major controls on these fluctuations and the ecohydrologic insights that can be gleaned from them. Spatial and temporal variations in...
Chapter B. Physical, Chemical, and Biological Responses of Streams to Increasing Watershed Urbanization in the Piedmont Ecoregion of Georgia and Alabama, 2003
M. Brian Gregory, Daniel L. Calhoun
2007, Scientific Investigations Report 2006-5101-B
As part of the U.S. Geological Survey National Water-Quality Assessment Program?s effort to assess the physical, chemical, and biological responses of streams to urbanization, 30 wadable streams were sampled near Atlanta, Ga., during 2002?2003. Watersheds were selected to minimize natural factors such as geology, altitude, and climate while representing a...
Modeling low-temperature geochemical processes
D. Kirk Nordstrom
J.I. Drever, editor(s)
2007, Book chapter, Treatise on geochemistry
No abstract available. ...
Integrated investigations of environmental effects of historical mining in the Animas River Watershed, San Juan County, Colorado
Stan E. Church, Paul Von Guerard, Susan E. Finger, editor(s)
2007, Professional Paper 1651
This publication comprises a Volume Contents of chapters (listed below) and a CD-ROM of data (contents shown in column at right). The Animas River watershed in southwest Colorado is one of many watersheds in the western United States where historical mining has left a legacy of acid mine drainage and elevated...
Hydrologic landscape units and adaptive management of intermountain wetlands
Stephen G. Custer, R.S. Sojda
2006, Conference Paper, Adaptive Management of Water Resources: American Water Resources Association Summer Specialty Conference.
daptive management is often proposed to assist in the management of national wildlife refuges and allows the exploration of alternatives as well as the addition of ne w knowledge as it becomes available. The hydrological landscape unit can be a good foundation for such efforts. Red Rock Lakes National Wildlife...
Coping with climate change
Tony Prato, Daniel B. Fagre
2006, ActionBioscience
What have we learned so far about how climate change is affecting our global environment? Studies show that it adversely affects human and natural systems by • reducing biodiversity • altering hydrological systems • impairing biological and chemical cycles • making it more difficult to restore degraded ecosystems Climate is not the only factor...
Geochemical data for mercury, methylmercury, and other constituents in sediments from Englebright Lake, California, 2002
Charles N. Alpers, Michael P. Hunerlach, Mark C. Marvin-DePasquale, Ronald C. Antweiler, Brenda K. Lasorsa, John F. De Wild, Noah P. Snyder
2006, Data Series 151
This report presents geochemical data from two 2002 sampling campaigns conducted in Englebright Lake on the Yuba River in northern California. A deep coring campaign was done in May-June 2002 and a shallow sampling campaign was completed in October 2002. This work assessed the chemical composition of material deposited in...
Importance of riparian forests in urban catchments contingent on sediment and hydrologic regimes
A.H. Roy, Mary C. Freeman, B. J. Freeman, S.J. Wenger, J.L. Meyer, W.E. Ensign
2006, Environmental Management (47) 523-539
Forested riparian corridors are thought to minimize impacts of landscape disturbance on stream ecosystems; yet, the effectiveness of streamside forests in mitigating disturbance in urbanizing catchments is unknown. We expected that riparian forests would provide minimal benefits for fish assemblages in streams that are highly impaired by sediment or hydrologic...
A spatially explicit decision support model for restoration of forest bird habitat
D.J. Twedt, W.B. Uihlein III, A.B. Elliott
2006, Conservation Biology (20) 100-110
The historical area of bottomland hardwood forest in the Mississippi Alluvial Valley has been reduced by >75%. Agricultural production was the primary motivator for deforestation; hence, clearing deliberately targeted higher and drier sites. Remaining forests are highly fragmented and hydrologically altered, with larger forest fragments subject to greater...
The role of the Wetland Reserve Program in conservation efforts in the Mississippi River Alluvial Valley
Sammy L. King, Daniel J. Twedt, R. Randy Wilson
2006, Wildlife Society Bulletin (34) 914-920
The Mississippi River Alluvial Valley includes the floodplain of the Mississippi River from Cairo, Illinois, USA, to the Gulf of Mexico. Originally this region supported about 10 million ha of bottomland hardwood forests, but only about 2.8 million ha remain today. Furthermore, most of the remaining bottomland forest is highly...
A regional assessment of salt marsh restoration and monitoring in the Gulf of Maine
R.A. Konisky, D.M. Burdick, M. Dionne, H.A. Neckles
2006, Restoration Ecology (14) 516-525
We compiled salt marsh monitoring datasets from 36 complete or imminent restoration projects in the Gulf of Maine to assess regional monitoring and restoration practices. Data were organized by functional indicators and restoration project types (culvert replacement, excavation works, or ditch plugging) then pooled to generate mean values for...
An interface between the Agricultural Non-Point Source (AGNPS) pollution model and the ERDAS Imagine Geographic Information System (GIS)
Michael P. Finn, E. Lynn Usery, Douglas J. Scheidt, Gregory M. Jaromack, Timothy D. Krupinski
2006, Geographic Information Sciences (12) 10-20
The U.S. Department of Agriculture developed the Agricultural Non-Point Source (AGNPS) pollution model. The AGNPS pollution model simulates the behavior of runoff, sediment, and nutrient transport from watersheds that have agriculture as their prime use. This model has been used extensively by scientists conducting hydrologic or water quality analyses using...
The utility of gravity and magnetic methods for understanding subsurface hydrogeology in large alluvial watersheds: Examples from urbanized basins of the Western United States
V. J. S. Grauch, Victoria Langenheim
2006, Conference Paper, Symposium on the application of geophysics to engineering and environmental problems proceedings
Population continues to grow rapidly within the large alluvial watersheds associated with structural basins of the Basin and Range Province and the Rio Grande rift of the western United States. Increasing demands on ground‐water resources in these basins, combined with water‐rights disputes, have amplified the need for improved understanding of...
Resistivity imaging in eastern Nevada Using the audiomagnetotelluric method for hydrogeologic framework studies
Darcy McPhee, Louise Pellerin, B. A. Churchel, Janet E. Tilden, Gary L. Dixon
2006, Conference Paper, Symposium on the Application of Geophysics to Engineering and Environmental Problems 2006
Inversion of audiomagnetotelluric (AMT) sounding data collected in eastern Nevada shows significant structure within the upper kilometer of the subsurface that defines the geologic framework from which hydrologic models will be developed. We collected AMT data along two profiles in Spring and Cave valleys in 2004–2005, using the Geometrics StrataGem...
