Measurement and modeling of polychlorinated biphenyl bioaccumulation from sediment for the marine polychaete neanthes arenaceodentata and response to sorbent amendment
E.M.-L. Janssen, Marie Noele Croteau, S. N. Luoma, R.G. Luthy
2010, Environmental Science & Technology (44) 2857-2863
Bioaccumulation rates of polychlorinated biphenyls (PCBs) for the marine polychaete Neanthes arenaceodentata were characterized, including PCB uptake rates from water and sediment, and the effect of sorbent amendment to the sediment on PCB bioavailability, organism growth, and lipid content. Physiological parameters were incorporated into a biodynamic model to predict contaminant...
Geochemistry of trace elements in coals from the Zhuji Mine, Huainan Coalfield, Anhui, China
R. Sun, Gaisheng Liu, Lingyun Zheng, C. L. Chou
2010, International Journal of Coal Geology (81) 81-96
The abundances of nine major elements and thirty-eight trace elements in 520 samples of low sulfur coals from the Zhuji Mine, Huainan Coalfield, Anhui, China, were determined. Samples were mainly collected from 10 minable coal seams of 29 boreholes during exploration. The B content in coals shows that the influence...
Silica-rich deposits and hydrated minerals at Gusev Crater, Mars: Vis-NIR spectral characterization and regional mapping
M.S. Rice, J.F. Bell III, E.A. Cloutis, A. Wang, S. W. Ruff, M.A. Craig, D.T. Bailey, J. R. Johnson, P.A. De Souza Jr., W. H. Farrand
2010, Icarus (205) 375-395
The Mars Exploration Rover (MER) Spirit has discovered surprisingly high concentrations of amorphous silica in soil and nodular outcrops in the Inner Basin of the Columbia Hills. In Pancam multispectral observations, we find that an absorption feature at the longest Pancam wavelength (1009 nm) appears to be characteristic of these...
Evaluating the spatiotemporal variations of water budget across China over 1951-2006 using IBIS model
Q. Zhu, H. Jiang, J. Liu, X. Wei, C. Peng, X. Fang, S. Liu, G. Zhou, S. Yu, W. Ju
2010, Hydrological Processes (24) 429-445
The Integrated Biosphere Simulator is used to evaluate the spatial and temporal patterns of the crucial hydrological variables [run-off and actual evapotranspiration (AET)] of the water balance across China for the period 1951–2006 including a precipitation analysis. Results suggest three major findings. First, simulated run-off captured 85% of the spatial...
Ninespine Stickleback Abundance in Lake Michigan Increases After Dreissenid Mussel Invasion
Charles P. Madenjian, David B. Bunnell, Owen T. Gorman
2010, Transactions of the American Fisheries Society (139) 11-20
Based on data from our annual lakewide bottom trawl survey of Lake Michigan, we determined that density of ninespine sticklebacks Pungitius pungitius increased from an average of 0.234 kg/ha during 1973–1995 to an average of 1.318 kg/ha during 1996–2007. This greater-than-fivefold increase in density coincided with the dreissenid mussel invasion...
Heat tracer methods
Richard W. Healy
2010, Book chapter, Estimating groundwater recharge
The flow of heat in the subsurface is closely linked to the movement of water (Ingebritsen et al., 2006). As such, heat has been used as a tracer in groundwater studies for more than 100 years (Anderson, 2005). As with chemical and isotopic tracers (Chapter 7), spatial or temporal...
Modeling methods
Richard W. Healy
2010, Book chapter, Estimating groundwater recharge
Simulation models are widely used in all types of hydrologic studies, and many of these models can be used to estimate recharge. Models can provide important insight into the functioning of hydrologic systems by identifying factors that influence recharge. The predictive capability of models can be used to evaluate how...
Integrated use of surface geophysical methods for site characterization — A case study in North Kingstown, Rhode Island
Carole D. Johnson, John W. Lane Jr., William C. Brandon, Christine A.P. Williams, Eric A. White
2010, Conference Paper, Symposium on the Application of Geophysics to Engineering and Environmental Problems 2010
A suite of complementary, non‐invasive surface geophysical methods was used to assess their utility for site characterization in a pilot investigation at a former defense site in North Kingstown, Rhode Island. The methods included frequency‐domain electromagnetics (FDEM), ground‐penetrating radar (GPR), electrical resistivity tomography (ERT), and multi‐channel analysis of surface‐wave (MASW)...
Pollutant fate and spatio-temporal variability in the choptank river estuary: Factors influencing water quality
D. Whitall, W.D. Hively, A.K. Leight, C.J. Hapeman, L.L. McConnell, T. Fisher, C.P. Rice, E. Codling, G.W. McCarty, A.M. Sadeghi, A. Gustafson, K. Bialek
2010, Science of the Total Environment (408) 2096-2108
Restoration of the Chesapeake Bay, the largest estuary in the United States, is a national priority. Documentation of progress of this restoration effort is needed. A study was conducted to examine water quality in the Choptank River estuary, a tributary of the Chesapeake Bay that since 1998 has been classified...
Inter-regional comparison of land-use effects on stream metabolism
M. J. Bernot, D. J. Sobota, R.O. Hall, P. J. Mulholland, W. K. Dodds, J.R. Webster, J. L. Tank, L. R. Ashkenas, L. W. Cooper, Clifford N. Dahm, S.V. Gregory, N. B. Grimm, S. K. Hamilton, S. L. Johnson, W. H. McDowell, J.L. Meyer, B. Peterson, G. C. Poole, Valett H.M. Maurice, C. Arango, J. J. Beaulieu, A. J. Burgin, C. Crenshaw, A. M. Helton, L. Johnson, J. Merriam, B.R. Niederlehner, J. M. O’Brien, J. D. Potter, R.W. Sheibley, S. M. Thomas, K. Wilson
2010, Freshwater Biology (55) 1874-1890
1. Rates of whole-system metabolism (production and respiration) are fundamental indicators of ecosystem structure and function. Although first-order, proximal controls are well understood, assessments of the interactions between proximal controls and distal controls, such as land use and geographic region, are lacking. Thus, the influence of land use on stream...
Life history and demographics of the endangered birdwing pearlymussel (Lemiox rimosus) (Bivalvia: Unionidae)
Jess W. Jones, Richard J. Neves, Steven A. Ahlstedt, Don Hubbs, Matthew Johnson, Hua Dan, Brett J.K. Ostby
2010, American Midland Naturalist (163) 335-350
The life history and population demography of the endangered birdwing pearlymussel (Lemiox rimosus) were studied in the Clinch and Duck rivers, Tennessee. Reproducing populations of L. rimosus now occur only in the Clinch, Duck and Powell rivers, as the species is considered extirpated from the remaining portions of its...
Attributes for MRB_E2RF1 Catchments by Major River Basins in the Conterminous United States: STATSGO Soil Characteristics
Michael Wieczorek, Andrew E. LaMotte
2010, Data Series 491-26
This tabular data set represents estimated soil variables compiled for every MRB_E2RF1 catchment of selected Major River Basins (MRBs, Crawford and others, 2006). The variables included are cation exchange capacity, percent calcium carbonate, slope, water-table depth, soil thickness, hydrologic soil group, soil erodibility (k-factor), permeability, average water capacity, bulk density,...
Novel silver tubing method for quantitative introduction of water into high temperature conversion systems for stable hydrogen and oxygen isotopic measurements
Haiping Qi, Manfred Groning, Tyler B. Coplen, Bryan Buck, Stanley J. Mroczkowski, Willi A. Brand, Heike Geilmann, Matthias Gehre
2010, Rapid Communications in Mass Spectrometry (24) 1821-1827
A new method to seal water in silver tubes for use in a TC/EA reduction unit using a semi-automated sealing apparatus can yield reproducibilities (1 standard deviation) of δ2H and &delta18O measurements of 1.0 ‰ and 0.06 ‰, respectively. These silver tubes containing reference waters may be preferred for calibration...
Comparison of transport and attachment behaviors of Cryptosporidium parvum oocysts and oocyst-sized microspheres being advected through three minerologically different granular porous media
Arvind Mohanram, Chittaranjan Ray, Ronald W. Harvey, David W. Metge, Joseph N. Ryan, Jon Chorover, D. D. Eberl
2010, Water Research (44) 5334-5344
In order to gain more information about the fate of Cryptosporidium parvum oocysts in tropical volcanic soils, the transport and attachment behaviors of oocysts and oocyst-sized polystyrene microspheres were studied in the presence of two soils. These soils were chosen because of their differing chemical and physical properties, i.e., an organic-rich (43–46%...
The tidally averaged momentum balance in a partially and periodically stratified estuary
M.T. Stacey, Matthew L. Brennan, Jon R. Burau, Stephen G. Monismith
2010, Journal of Physical Oceanography (40) 2418-2434
Observations of turbulent stresses and mean velocities over an entire spring–neap cycle are used to evaluate the dynamics of tidally averaged flows in a partially stratified estuarine channel. In a depth-averaged sense, the net flow in this channel is up estuary due to interaction of tidal forcing with the geometry...
Solute and heat transport model of the Henry and Hilleke laboratory experiment
C.D. Langevin, A.M. Dausman, M.C. Sukop
2010, Ground Water (48) 757-770
SEAWAT is a coupled version of MODFLOW and MT3DMS designed to simulate variable-density ground water flow and solute transport. The most recent version of SEAWAT, called SEAWAT Version 4, includes new capabilities to represent simultaneous multispecies solute and heat transport. To test the new features in SEAWAT, the laboratory experiment...
Soil-test N recommendations augmented with PEST-optimized RZWQM simulations
R.W. Malone, D.B. Jaynes, Liwang Ma, B. T. Nolan, D.W. Meek, D.L. Karlen
2010, Journal of Environmental Quality (39) 1711-1723
Improved understanding of year-to-year late-spring soil nitrate test (LSNT) variability could help make it more attractive to producers. We test the ability of the Root Zone Water Quality Model (RZWQM) to simulate watershed-scale variability due to the LSNT, and we use the optimized model to simulate long-term field N dynamics...
Carbon and hydrogen isotopic evidence for the origin of combustible gases in water-supply wells in north-central Pennsylvania
K. M. Revesz, K. J. Breen, A.J. Baldassare, R.C. Burruss
2010, Applied Geochemistry (25) 1845-1859
The origin of the combustible gases in groundwater from glacial-outwash and fractured-bedrock aquifers was investigated in northern Tioga County, Pennsylvania. Thermogenic methane (CH4) and ethane (C2H6) and microbial CH4 were found. Microbial CH4 is from natural in situ processes in the shale bedrock and occurs chiefly in the bedrock aquifer....
Sediment contamination of residential streams in the metropolitan Kansas City area, USA: Part I. distribution of polycyclic aromatic hydrocarbon and pesticide-related compounds
J. Tao, D. Huggins, G. Welker, J.R. Dias, Christopher G. Ingersoll, J.B. Murowchick
2010, Archives of Environmental Contamination and Toxicology (59) 352-369
This is the first part of a study that evaluates the influence of nonpoint-source contaminants on the sediment quality of five streams within the metropolitan Kansas City area, central United States. Surficial sediment was collected in 2003 from 29 sites along five streams with watersheds that extend from the core...
Natural chlorate in the environment: Application of a new IC-ESI/MS/MS method with a Cl18O3- internal standard
Balaji Rao, Paul B. Hatzinger, J.K. Bohlke, Neil C. Sturchio, Brian J. Andraski, Frank D. Eckardt, W. Andrew Jackson
2010, Environmental Science & Technology (44) 8429-8434
A new ion chromatography electrospray tandem mass spectrometry (IC-ESI/MS/MS) method has been developed for quantification and confirmation of chlorate (ClO3−) in environmental samples. The method involves the electro-chemical generation of isotopically labeled chlorate internal standard (Cl18O3−) using 18O water (H218O). The standard was added to all samples prior to analysis...
Mapping irrigated lands at 250-m scale by merging MODIS data and National Agricultural Statistics
Md Shahriar Pervez, Jesslyn F. Brown
2010, Remote Sensing (2) 2388-2412
Accurate geospatial information on the extent of irrigated land improves our understanding of agricultural water use, local land surface processes, conservation or depletion of water resources, and components of the hydrologic budget. We have developed a method in a geospatial modeling framework that assimilates irrigation statistics with remotely sensed parameters...
Effectiveness of capture techniques for rails in emergent marsh and agricultural wetlands
Marie Perkins, S.L. King, J. Linscombe
2010, Waterbirds (33) 376-380
A reliable and effective technique for capturing rails would improve researchers' ability to study these secretive marsh birds. The time effectiveness and capture success of four methods for capturing rails in emergent marsh and agricultural wetlands in southern Louisiana and Texas were evaluated during winter and breeding seasons. Methods were...
Quantifying data worth toward reducing predictive uncertainty
A.M. Dausman, J. Doherty, C.D. Langevin, M.C. Sukop
2010, Ground Water (48) 729-740
The present study demonstrates a methodology for optimization of environmental data acquisition. Based on the premise that the worth of data increases in proportion to its ability to reduce the uncertainty of key model predictions, the methodology can be used to compare the worth of different data types, gathered at...
Landscape influences on genetic differentiation among bull trout populations in a stream-lake network
M.H. Meeuwig, C.S. Guy, S.T. Kalinowski, W.A. Fredenberg
2010, Molecular Ecology (19) 3620-3633
This study examined the influence of landscape heterogeneity on genetic differentiation between migratory bull trout (Salvelinus confluentus) populations in Glacier National Park, Montana. An information-theoretic approach was used to compare different conceptual models of dispersal associated with barriers, different models of isolation by distance, and the combined effects of barriers,...
A trial of two trouts: Comparing the impacts of rainbow and brown trout on a native galaxiid
K.A. Young, J. B. Dunham, J.F. Stephenson, A. Terreau, A.F. Thailly, G. Gajardo, C. G. de Leaniz
2010, Animal Conservation (13) 399-410
Rainbow trout Oncorhynchus mykiss and brown trout Salmo trutta are the world's two most widespread exotic fishes, dominate the fish communities of most cold-temperate waters in the southern hemisphere and are implicated in the decline and extirpation of native fish species. Here, we provide the first direct comparison of the...
