Effect of pH on bacteriophage transport through sandy soils
Takashi Kinoshita, Roger C. Bales, Kimberley M. Maguire, Charles P. Gerba
1993, Journal of Contaminant Hydrology (14) 55-70
Effects of pH and hydrophobicity on attachment and detachment of PRD-1 and MS-2 in three different sandy soils were investigated in a series of laboratory-column experiments. Concentrations of the lipid-containing phage PRD-1 decreased 3–4 orders of magnitude during passage through the 10–15-cm-long columns. Attachment of the lipid-containing phage PRD-1 was...
Sources of pollutants in Wisconsin stormwater
R.T. Bannerman, David W. Owens, R.B. Dodds, Nancy J. Hornewer
1993, Water Science and Technology (28) 241-259
Rainfall runoff samples were collected from streets, parking lots, roofs, driveways, and lawns. These five source areas are located in residential, commercial, and industrial land uses in Madison, Wisconsin. Solids, phosphorus, and heavy metals loads were determined for all the source areas using measured concentrations and runoff volumes estimated by...
Sensitivity of early-life stage golden trout to low pH and elevated aluminum
Aaron J. DeLonay, Edward E. Little, Daniel F. Woodward, William G. Brumbaugh, Aida M. Farag, Charles F. Rabeni
1993, Environmental Toxicology and Chemistry (12) 1223-1232
Early-life-stage golden trout (Oncorhynchus aguabonita aguabonita) were exposed to acid and Al to examine the response and determine the sensitivity of a western, alpine salmonid to conditions simulating an episodic pH depression. Freshly fertilized eggs, alevins, and swim-up larvae were exposed for 7 d to one of 12 combinations of...
A rapid inoculation technique for assessing pathogenicity of Fusarium oxysporum f. sp. niveum and F. o. melonis on Cucurbits
S. Freeman, R. J. Rodriguez
1993, Plant Disease (77) 1198-1201
A continuous-dip inoculation technique for rapid assessment of pathogenicity of Fusarium oxysporum f. sp. niveum and F. o. melonis was developed. The method, adapted from a similar procedure for determining pathogenicity of Colletotrichum magna (causal agent of anthracnose of cucurbits), involves constant exposure of seedlings and cuttings (seedlings with root...
Multivariate geostatistical analysis of ground-water contamination: A case history
Jonathan D. Istok, Jeffrey D. Smyth, Alan L. Flint
1993, Groundwater (31) 63-74
A case history is presented for the application of multivariate geostatistical methods to the problem of estimating pesticide concentrations in ground water from measured concentrations of nitrate and pesticide, when pesticide is under‐sampled. The shallow, poorly confined, sand and gravel aquifer underlying the lower Malheur River basin near Ontario, Oregon...
Meromixis in hypersaline Mono Lake, California. 2. Nitrogen fluxes
R. Jellison, Laurence G. Miller, John M. Melack, Gayle L. Dana
1993, Limnology and Oceanography (38) 1020-1039
Vertical fluxes of nitrogen were examined in hypersaline Mono Lake over a 9-yr period which encompassed the onset, persistence, and breakdown of meromixis. Under monomictic conditions, ammonia, which accumulates in the hypolimnion, is mixed into the euphotic region during autumn overturn. Following the onset of meromixis in 1983 and elimination...
Effect of intrastorm isotopic heterogeneities of rainfall, soil water, and groundwater on runoff modeling
Carol Kendall, Jeffrey J. McDonnell
1993, Conference Paper, Hydrology of warm humid regions: Yokohama symposium, 1993, Tracers in hydrology
No abstract available....
Management Systems Evaluation Areas: An overview
J.L. Hatfield, J. L. Anderson, E.E. Alberts, Tony Prato, D.G. Watts, Andy Ward, G. N. Delin, Robert Swank
1993, Conference Paper, Agricultural Research to Protect Water Quality, Minneapolis, Minnesota, February 21-24, 1993, Proceedings
No abstract available....
A pressure-packer system for conducting rising head tests in water table wells
Benjamin S. Levy, Lawrence J. Pannell, John P. Dadoly
1993, Journal of Hydrology (148) 189-202
The pressure system developed for fully-saturated well screens has been modified for conducting rising head tests in water table wells installed in highly permeable aquifers. The pressure system consists of a compressed air source and 1 inch diameter PVC piping with a packer attached at the end. The pressure system...
Survival of northern pintails banded during winter in North America, 1950-88
Jay B. Hestbeck
1993, Journal of Wildlife Management (57) 590-597
From 1950 through 1988, the continental breeding population of northern pintails (Anas acuta) varied from 2.0 million to 9.9 million. Because pintails have high fidelity to certain wintering grounds along coasts and large bodies of water, management on these wintering areas may increase population size if changes in winter survival...
Overwinter distribution of northern pintail populations in North America
Jay B. Hestback
1993, Journal of Wildlife Management (57) 582-589
Northern pintails (Anas acuta) exist as a single circumpolar breeding population but display weak fidelity to given breeding sites. If fidelity to wintering areas is strong, management on wintering grounds may allow local winter populations to increase. Thus, I delineated reference areas for wintering areas based on recovery data for...
Depositional aspects of the November 1985 Flood on Cheat River and Black Fork, West Virginia
J. S. Kite, R. C. Linton
1993, Bulletin 1981-D
Widespread, intense rainfall in November 1985 produced floods that exceeded all historic events on Cheat River and most of its tributaries. Official discharge estimates for Cheat River ranged from 4,800 to 5,380 m3 /s (170,000-190,000 ft3/s) with a recurrence interval of >100 yr. In addition to considerable property damage and...
Groundwater as a nonpoint source of atrazine and deethylatrazine in a river during base flow conditions
Paul J. Squillace, E.M. Thurman, Edward T. Furlong
1993, Water Resources Research (29) 1719-1729
Alluvial groundwater adjacent to the main stem river is the principal nonpoint source of atrazine and deethylatrazine in the Cedar River of Iowa after the river has been in base flow conditions for 5 days. Between two sites along a 116-km reach of the Cedar River, tributaries contributed about 25%...
Transport of volatile organic compounds across the capillary fringe
Kathleen A. McCarthy, Richard L. Johnson
1993, Water Resources Research (29) 1675-1683
Physical experiments were conducted to investigate the transport of a dissolved volatile organic compound (trichloroethylene, TCE) from shallow groundwater to the unsaturated zone under a variety of conditions including changes in the soil moisture profile and water table position. Experimental data indicated that at moderate groundwater velocities (0.1 m/d), vertical...
Dioxin-like toxic potency in Forster's tern eggs from Green Bay, Lake Michigan, North America
D. E. Tillitt, T.J. Kubiak, G.T. Ankley, J. P. Giesy
1993, Chemosphere (26) 2079-2084
The endangered Forster's tern (Sternaforsteri) population on Green Bay, Wisconsin has exhibited symptoms of embryotoxicity, congenital deformities, and poor hatching success. The putative causal agents are planar halogenated hydrocarbons (PHH). The objectives of this study were: 1) to evaluate the toxic potency of PHHs in extracts of Forster's tern eggs...
Use of output from high‐resolution atmospheric models in landscape‐scale hydrologic models: An assessment
S. W. Hostetler, F. Giorgi
1993, Water Resources Research (29) 1685-1695
In this paper we investigate the feasibility of coupling regional climate models (RCMs) with landscape‐scale hydrologic models (LSHMs) for studies of the effects of climate on hydrologic systems. The RCM used is the National Center for Atmospheric Research/Pennsylvania State University mesoscale model (MM4). Output from two year‐round simulations (1983 and...
Transport and accumulation of radionuclides and stable elements in a Missouri River Reservoir
Edward Callender, John A. Robbins
1993, Water Resources Research (29) 1787-1804
Several long sediment cores from the Cheyenne River Embayment of Lake Oahe, a 250-km-long Missouri River reservoir in South Dakota, have been analyzed for radionuclides and stable elements. The combination of fine-scale sampling and rapid sedimentation produces radionuclide distributions that can be used to estimate the detailed chronology of particle...
Measurement of variation in soil solute tracer concentration across a range of effective pore sizes
Judson W. Harvey
1993, Water Resources Research (29) 1831-1837
Solute transport concepts in soil are based on speculation that solutes are distributed nonuniformly within large and small pores. Solute concentrations have not previously been measured across a range of pore sizes and examined in relation to soil hydrological properties. For this study, modified pressure cells were used to measure...
Cruise to the Chukchi Borderland, Arctic Ocean
Arthur Grantz, 1992 Arctic Summer West Scientific Party
1993, Eos, Earth and Space Science News (74) 249-254
Oceanography and geology were the principal focuses of the U.S. Geological Survey-sponsored expedition Arctic Summer West '92, which traveled to the eastern part of the Chukchi Borderland of the Amerasia Basin, western Arctic Ocean. The expedition took place from August 20 to September 25, 1992, aboard the Coast Guard cutter...
Simulation of fluid distributions observed at a crude oil spill site incorporating hysteresis, oil entrapment, and spatial variability of hydraulic properties
H.I. Essaid, W.N. Herkelrath, K.M. Hess
1993, Water Resources Research (29) 1753-1770
Subsurface oil, water, and air saturation distributions were determined using 146 samples collected from seven boreholes along a 120-m transect at a crude oil spill site near Bemidji, Minnesota. The field data, collected 10 years after the spill, show a clearly defined oil body that has an oil saturation distribution...
Landscape linkages between geothermal activity and solute composition and ecological response in surface waters draining the Atlantic slope of Costa Rica
Catherine M. Pringle, Gary L. Rowe, Frank J. Triska, Jose F. Fernandez, John West
1993, Limnology and Oceanography (38) 753-774
Surface waters draining three different volcanoes in Costa Rica, ranging from dormant to moderately active to explosive, have a wide range of solute compositions that partly reflects the contribution of different types of solute-rich, geothermal waters. Three major physical transport vectors affect flows of geothermally derived solutes: thermally driven convection...
Surface chemical effects on colloid stability and transport through natural porous media
Robert W. Puls, Cynthia J. Paul, Donald A. Clark
1993, Colloids and Surfaces A: Physicochemical and Engineering Aspects (73) 287-300
Surface chemical effects on colloidal stability and transport through porous media were investigated using laboratory column techniques. Approximately 100 nm diameter, spherical, iron oxide particles were synthesized as the mobile colloidal phase. The column packing material was retrieved from a sand and gravel aquifer on Cape Cod, MA. Previous studies...
Rainfall-threshold conditions for landslides in a humid-tropical system
Matthew C. Larsen, Andrew Simon
1993, Geografiska Annaler, Series A: Physical Geography (75A) 13-23
Landslides are triggered by factors such as heavy rainfall, seismic activity, and construction on hillslopes. The leading cause of landslides in Puerto Rico is intense and/or prolonged rainfall. A rainfall threshold for rainfall-triggered landsliding is delimited by 256 storms that occurred between 1959 and 1991 in the central mountains of...
Instream flows according to the ASCE model state water code
G. W. Sherk, Berton Lee Lamb
1993, Book, Water management in the '90s: a time for innovation: proceedings of the 20th anniversary conference
No abstract available....
Concentrations, distribution, and sources of selenium from irrigated lands in western United States
R. A. Engberg, M. A. Sylvester
1993, Journal of Irrigation and Drainage Engineering (119) 522-536
Concentrations, distribution, and sources of selenium from irrigated lands were studied between 1986 and 1990 at 20 reconnaissance project areas in 17 western states under the Department of Interior's National Irrigation Water Quality Program. Samples of water, bottom sediment, whole‐body fish, and bird livers for analysis of selenium concentrations were...
