Cattail invasion of sedge/grass meadows in Lake Ontario: Photointerpretation analysis of sixteen wetlands over five decades
D.A. Wilcox, K.P. Kowalski, H.L. Hoare, M.L. Carlson, H.N. Morgan
2008, Journal of Great Lakes Research (34) 301-323
Photointerpretation studies were conducted to evaluate vegetation changes in wetlands of Lake Ontario and the upper St. Lawrence River associated with regulation of water levels since about 1960. The studies used photographs from 16 sites (four each from drowned river mouth, barrier beach, open embayment, and protected embayment wetlands) and...
Real-time PCR detection and quantification of nine potential sources of fecal contamination by analysis of mitochondrial Cytochrome b targets
W. B. Schill, M.V. Mathes
2008, Environmental Science & Technology (42) 5229-5234
We designed and tested real-time PCR probe/primer sets to detect and quantify Cytochrome b sequences of mitochondrial DNA (mtDNA) from nine vertebrate species of pet (dog), farm (cow, chicken, sheep, horse, pig), wildlife (Canada goose, white-tailed deer), and human. Linear ranges of the assays were from 101 to 108 copies/??l....
Permeameter data verify new turbulence process for MODFLOW
Eve L. Kuniansky, Keith J. Halford, W. Barclay Shoemaker
2008, Ground Water (46) 768-771
A sample of Key Largo Limestone from southern Florida exhibited turbulent flow behavior along three orthogonal axes as reported in recently published permeameter experiments. The limestone sample was a cube measuring 0.2 m on edge. The published nonlinear relation between hydraulic gradient and discharge was simulated using the turbulent flow...
Landscape pattern of seed banks and anthropogenic impacts in forested wetlands of the northern Mississippi River Alluvial Valley
B. Middleton, X.B. Wu
2008, Écoscience (15) 231-240
Agricultural development on floodplains contributes to hydrologic alteration and forest fragmentation, which may alter landscape-level processes. These changes may be related to shifts in the seed bank composition of floodplain wetlands. We examined the patterns of seed bank composition across a floodplain watershed by looking at the number of seeds...
Citronelle Dome: A giant opportunity for multizone carbon storage and enhanced oil recovery in the Mississippi Interior Salt Basin of Alabama
R.A. Esposito, J.C. Pashin, P.M. Walsh
2008, Environmental Geosciences (15) 53-62
The Citronelle Dome is a giant, salt-cored anticline in the eastern Mississippi Interior Salt Basin of southern Alabama that is located near several large-scale, stationary, carbon-emitting sources in the greater Mobile area. The dome forms an elliptical, four-way structural closure containing opportunities for CO2-enhanced oil recovery (CO2-EOR) and large-capacity saline...
A national reconnaissance for pharmaceuticals and other organic wastewater contaminants in the United States - II) Untreated drinking water sources
M. J. Focazio, D.W. Kolpin, K.K. Barnes, E. T. Furlong, M. T. Meyer, S.D. Zaugg, L. B. Barber, M.E. Thurman
2008, Science of the Total Environment (402) 201-216
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...
Hydrated silicate minerals on Mars observed by the Mars Reconnaissance Orbiter CRISM instrument
J.F. Mustard, S.L. Murchie, S.M. Pelkey, B.L. Ehlmann, R.E. Milliken, J. A. Grant, J.-P. Bibring, F. Poulet, J. Bishop, E. N. Dobrea, L. Roach, F. Seelos, R. E. Arvidson, S. Wiseman, R. Green, C. Hash, D. Humm, E. Malaret, J.A. McGovern, K. Seelos, T. Clancy, R. Clark, D. des Marais, N. Izenberg, A. Knudson, Y. Langevin, T. Martin, P. McGuire, Robert Morris, M. Robinson, T. Roush, M. Smith, G. Swayze, H. Taylor, T. Titus, M. Wolff
2008, Nature (454) 305-309
Phyllosilicates, a class of hydrous mineral first definitively identified on Mars by the OMEGA (Observatoire pour la Mineralogie, L’Eau, les Glaces et l’Activitié) instrument1,<a id="ref-link-abstract-2" title="Poulet, F. et...
Radarsat-1 and ERS InSAR analysis over southeastern coastal Louisiana: Implications for mapping water-level changes beneath swamp forests
Z. Lu, Oh-Ig Kwoun
2008, IEEE Transactions on Geoscience and Remote Sensing (46) 2167-2184
Detailed analysis of C-band European Remote Sensing 1 and 2 (ERS-1/ERS-2) and Radarsat-1 interferometric synthetic aperture radar (InSAR) imagery was conducted to study water-level changes of coastal wetlands of southeastern Louisiana. Radar backscattering and InSAR coherence suggest that the dominant radar backscattering mechanism for swamp forest and saline marsh is...
The application of electrical conductivity as a tracer for hydrograph separation in urban catchments
B.A. Pellerin, W. M. Wollheim, X. Feng, C.J. Vororsmarty
2008, Hydrological Processes (22) 1810-1818
Two-component hydrograph separation was performed on 19 low-to-moderate intensity rainfall events in a 4.1-km2 urban watershed to infer the relative and absolute contribution of surface runoff (e.g. new water) to stormflow generation between 2001 and 2003. The electrical conductivity (EC) of water was used as a continuous and inexpensive tracer,...
The wister mud pot lineament: Southeastward extension or abandoned strand of the San Andreas fault?
D.K. Lynch, K.W. Hudnut
2008, Bulletin of the Seismological Society of America (98) 1720-1729
We present the results of a survey of mud pots in the Wister Unit of the Imperial Wildlife Area. Thirty-three mud pots, pot clusters, or related geothermal vents (hundreds of pots in all) were identified, and most were found to cluster along a northwest-trending line that is more or less...
Utilization of protein expression profiles as indicators of environmental impairment of smallmouth bass (Micropterus dolomieu) from the Shenandoah River, Virginia, USA
J. Ripley, L. Iwanowicz, V. Blazer, C. Foran
2008, Environmental Toxicology and Chemistry (27) 1756-1767
The Shenandoah River (VA, USA), the largest tributary of the Potomac River (MD, USA) and an important source of drinking water, has been the site of extensive fish kills since 2004. Previous investigations indicate environmental stressors may be adversely modulating the immune system of smallmouth bass...
Distribution and variability of redox zones controlling spatial variability of arsenic in the Mississippi River Valley alluvial aquifer, southeastern Arkansas
M.U. Sharif, R.K. Davis, K.F. Steele, B. Kim, P.D. Hays, T.M. Kresse, J.A. Fazio
2008, Journal of Contaminant Hydrology (99) 49-67
Twenty one of 118 irrigation water wells in the shallow (25-30??m thick) Mississippi River Valley alluvial aquifer in the Bayou Bartholomew watershed, southeastern Arkansas had arsenic (As) concentrations (< 0.5 to 77????g/L) exceeding 10????g/L. Sediment and groundwater samples were collected and analyzed from the sites of the highest, median, and...
Differential exposure, duration, and sensitivity of unionoidean bivalve life stages to environmental contaminants
W.G. Cope, R.B. Bringolf, D.B. Buchwalter, T.J. Newton, C.G. Ingersoll, N. Wang, T. Augspurger, F.J. Dwyer, M.C. Barnhart, R. J. Neves, E. Hammer
2008, Journal of the North American Benthological Society (27) 451-462
Freshwater mussels (superfamily Unionoidea) are in serious global decline and in urgent need of protection and conservation. The declines have been attributed to a wide array of human activities resulting in pollution and water-quality degradation, and habitat destruction and alteration. Linkages among poor water quality, pollutant sources, and mussel decline...
Linking landscapes and habitat suitability scores for diadromous fish restoration in the susquehanna river basin
P.M. Kocovsky, R. M. Ross, D. S. Dropkin, J.M. Campbell
2008, North American Journal of Fisheries Management (28) 906-918
Dams within the Susquehanna River drainage, Pennsylvania, are potential barriers to migration of diadromous fishes, and many are under consideration for removal to facilitate fish passage. To provide useful input for prioritizing dam removal, we examined relations between landscape-scale factors and habitat suitability indices (HSIs) for native diadromous species of...
Soil sedimentology at Gusev Crater from Columbia Memorial Station to Winter Haven
N.A. Cabrol, Kenneth E. Herkenhoff, R. Greeley, E.A. Grin, C. Schroder, C. d’Uston, C. Weitz, R.A. Yingst, B. A. Cohen, Jeff Moore, A. Knudson, B. Franklin, R. C. Anderson, R. Li
2008, Journal of Geophysical Research E: Planets (113)
A total of 3140 individual particles were examined in 31 soils along Spirit's traverse. Their size, shape, and texture were quantified and classified. They represent a unique record of 3 years of sedimentologic exploration from landing to sol 1085 covering the Plains Unit to Winter Haven where Spirit spent the...
Response of fish populations to natural channel design restoration in streams of the Catskill Mountains, New York
Barry P. Baldigo, D.R. Warren, A.G. Ernst, C.I. Mulvihill
2008, North American Journal of Fisheries Management (28) 954-969
Many streams and rivers throughout North America have been extensively straightened, widened, and hardened since the middle 1800s, but related effects on aquatic ecosystems have seldom been monitored, described, or published. Beginning in the early 1990s, reach-level restoration efforts began to base projects on natural channel design (NCD) techniques and...
Infiltration from an impoundment for coal‐bed natural gas, Powder River Basin, Wyoming: Evolution of water and sediment chemistry
Richard W. Healy, Cynthia A. Rice, Timothy T. Bartos, Michael P. McKinley
2008, Water Resources Research (44)
Development of coal‐bed natural gas (CBNG) in the Powder River Basin, Wyoming, has increased substantially in recent years. Among environmental concerns associated with this development is the fate of groundwater removed with the gas. A preferred water‐management option is storage in surface impoundments. As of January 2007, permits for more...
Method for estimating spatially variable seepage loss and hydraulic conductivity in intermittent and ephemeral streams
R.G. Niswonger, David E. Prudic, G.E. Fogg, David A. Stonestrom, E.M. Buckland
2008, Water Resources Research (44)
A method is presented for estimating seepage loss and streambed hydraulic conductivity along intermittent and ephemeral streams using streamflow front velocities in initially dry channels. The method uses the kinematic wave equation for routing streamflow in channels coupled to Philip's equation for infiltration. The coupled model considers variations in seepage...
Flow unit modeling and fine-scale predicted permeability validation in Atokan sandstones: Norcan East Kansas
S. Bhattacharya, A.P. Byrnes, W.L. Watney, J.H. Doveton
2008, American Association of Petroleum Geologists Bulletin (92) 709-732
Characterizing the reservoir interval into flow units is an effective way to subdivide the net-pay zone into layers for reservoir simulation. Commonly used flow unit identification techniques require a reliable estimate of permeability in the net pay on a foot-by-foot basis. Most of the wells do not have cores, and...
Spatial and temporal variability in sedimentation rates associated with cutoff channel infill deposits: Ain River, France
H. Piégay, C.R. Hupp, A. Citterio, S. Dufour, B. Moulin, D.E. Walling
2008, Water Resources Research (44)
Floodplain development is associated with lateral accretion along stable channel geometry. Along shifting rivers, the floodplain sedimentation is more complex because of changes in channel position but also cutoff channel presence, which exhibit specific overflow patterns. In this contribution, the spatial and temporal variability of sedimentation rates in cutoff channel...
Habitat use of juvenile pallid sturgeon and shovelnose sturgeon with implications for water-level management in a downstream reservoir
Paul C. Gerrity, C.S. Guy, W.M. Gardner
2008, North American Journal of Fisheries Management (28) 832-843
Natural recruitment of pallid sturgeon Scaphirhynchus albus has not been observed in the Missouri River above Fort Peck Reservoir, Montana, for at least 20 years. To augment the population, age-1 hatchery-reared juvenile pallid sturgeon were released in 1998. The objective of this study was to evaluate the habitat use of...
A reference data set of hillslope rainfall-runoff response, Panola Mountain Research Watershed, United States
Meerveld H. J. Tromp-van H. J., A.L. James, Jeffery J. McDonnell, N.E. Peters
2008, Water Resources Research (44)
Although many hillslope hydrologic investigations have been conducted in different climate, topographic, and geologic settings, subsurface stormflow remains a poorly characterized runoff process. Few, if any, of the existing data sets from these hillslope investigations are available for use by the scientific community for model development and validation or conceptualization...
Analytical and numerical analyses of an unconfined aquifer test considering unsaturated zone characteristics
A.F. Moench
2008, Water Resources Research (44)
A 7-d, constant rate aquifer test conducted by University of Waterloo researchers at Canadian Forces Base Borden in Ontario, Canada, is useful for advancing understanding of fluid flow processes in response to pumping from an unconfined aquifer. Measured data include not only drawdown in the saturated zone but also volumetric...
Species composition and habitat associations of benthic algal assemblages in headwater streams of the Sierra Nevada, California
L. R. Brown, J. T. May, C.T. Hunsaker
2008, Western North American Naturalist (68) 194-209
Despite their trophic importance and potential importance as bioindicators of stream condition, benthic algae have not been well studied in California. In particular there are few studies from small streams in the Sierra Nevada. The objective of this study was to determine the standing crop of chlorophyll-a and benthic algal...
Meteorites on Mars observed with Mars Exploration Rovers
C. Schroder, D.S. Rodionov, T.J. McCoy, B.L. Jolliff, Ralf Gellert, L.R. Nittler, W. H. Farrand, J. R. Johnson, S. W. Ruff, James W. Ashley, D. W. Mittlefehldt, Kenneth E. Herkenhoff, I. Fleischer, A. F. C. Haldemann, G. Klingelhofer, D. W. Ming, R.V. Morris, P.A. de Souza, S. W. Squyres, C. Weitz, A. S. Yen, J. Zipfel, T. Economou
2008, Journal of Geophysical Research E: Planets (113)
Reduced weathering rates due to the lack of liquid water and significantly greater typical surface ages should result in a higher density of meteorites on the surface of Mars compared to Earth. Several meteorites were identified among the rocks investigated during Opportunity's traverse across the sandy Meridiani plains. Heat Shield...
