Geochemical response to variable streamflow conditions in contaminated and uncontaminated streams
Sonia A. Nagorski, Johnnie N. Moore, Temple E. McKinnon, David B. Smith
2003, Water Resources Research (39) 1-1-1-14
Seasonal variations in stream inorganic geochemistry are not well documented or understood. We sampled two mining-impacted and two relatively pristine streams in western Montana over a 12-month period, collecting samples every 4 weeks, with supplemental sampling (at least weekly) during spring runoff. We analyzed all samples for dissolved (operationally defined...
Aeromagnetic survey of Medina and Uvalde counties, Texas
David V. Smith, Bruce D. Smith, Pat L. Hill
2002, Open-File Report 2002-49
No abstract available....
Distribution of metals in water and bed sediment in a mineral-rich watershed, Montana, USA
Sonia A. Nagorski, Johnnie N Moore, David B. Smith
2002, Mine Water and the Environment (21) 121-136
We sampled the Blackfoot River (Montana) and its major tributaries from the headwaters of the basin to near its confluence with the Clark Fork River over the course of 5 days in August 1998. We measured streamflow, collected fine-grained (<63 μm) streambed sediment, and sampled the dissolved (operationally defined as...
Geologic map of the Saint Joseph area, Missouri and Kansas
William H. Langer, Lawrence L. Brady, David Smith, Roger A. Melick
2001, Miscellaneous Field Studies Map 2374
This map was prepared as a collaborative effort with the Missouri Division of Geology and Land Survey, the Kansas Geological Survey, and the Nebraska Conservation and Survey Division. Map units and preliminary contacts between units were identified using stereoscopic pairs of high altitude, false color infrared, aerial photographs. Contacts were drawn on...
Geochemical baseline studies and relations between water quality and streamflow in the Upper Blackfoot watershed, Montana: Data for July 1997-December 1998
Sonia A. Nagorski, Johnnie N. Moore, David B. Smith
2001, Open-File Report 2001-59
We used ultraclean sampling techniques to study the solute (operationally defined as <0.2 ?m) surface water geochemistry at five sites along the Upper Blackfoot River and four sites along the Landers Fork, some in more detail and more regularly than others. We collected samples also from Hogum Creek, a tributary to the Blackfoot,...
Relationship of Eastern hemlock (Tsuga canadensis) to the ecology of small streams in Delaware Water Gap National Recreation Area
David P. Lemarie, John A. Young, Craig D. Snyder, Robert M. Ross, David Smith, Randy M. Bennett
2000, General Technical Report NE-267
Hemlock ravines in Delaware Water Gap National Recreation Area (DEWA) are highly valued because of their distinctive aesthetic, recreational and ecological qualities. We conducted a comparative study designed to determine the potential long-term consequences to aquatic communities of the suspected transition from hemlock-dominated forests to mixed hardwood forests as a result of hemlock woolly adelgid (HWA; Adelges...
Imaging and modeling new VETEM data
David L. Wright, David V. Smith, Jared D. Abraham, Raymond S. Hutton, E. Kent Bond, Tie Jun Cui, Alaeddin A. Aydiner, Weng Cho Chew
2000, Conference Paper, Proceedings of SPIE - The International Society for Optical Engineering
In previously reported work (Wright and others, 2000) we found that the very early time electromagnetic (VETEM) prototype system produced data from which high resolution images of a buried former foundry site at the Denver Federal Center were made. The soil covering the site is about 30 mS/m conductivity, and...
Influence of temperature and substrate on infection rate, triactinomyxon production, and release duration from eastern tubifex worms infected with Myxobolus cerebralis
Thomas Waldrop, Vicki Blazer, David Smith, Bane Schill, Christine Densmore
B. Schill, T. Waldrop, V. Blazer, editor(s)
1999, Book, 5th Annual Whirling Disease Symposium: Research and Management Perspectives
Salmonid whirling disease is caused by Myxobolus cerebralis, a metazoan parasite with a two host life cycle involving salmonid fish a an aquatic oligochaete, Tubifex tubifex (Wolf, Markiw and Hiltunen, 1986). Whirling disease has been reported in 22 U.S. states with the greatest losses occurring in the salmonid fisheries...
A revised annotated checklist of the Chironomidae (Insecta: Diptera) of the southeastern United States
Broughton A. Caldwell, Patrick L. Hudson, David R. Lenat, David Smith
1997, Transactions of the American Entomological Society (123) 1-53
A revised annotated checklist for the chironomid midges (Diptera: Chironomidae) of the southeastern United States is presented that includes the states of Alabama, Florida, Georgia, North Carolina, South Carolina, and Tennessee. Much of the information concerns occurrence and habitat preference records based upon the authors' data, as well as published...
Differences in detection of Aeromonas salmonicida in covertly infected salmonid fishes by the stress-inducible furunculosis test and culture-based assays
Rocco C. Cipriano, Larisa Ford, David R. Smith, J. H. Schachte, C. J. Petrie
1997, Journal of Aquatic Animal Health (9) 108-113
Accurate detection of Aeromonas salmonicida subsp. salmonicida (the cause of furunculosis disease) in covertly infected salmonids is difficult and is a cause of concern for those involved in fish health inspection and resource management programs. In this study, we examined populations of brook trout Salvelinus fontinalis, Atlantic salmon Salmo salar, and lake trout Salvelinus namaycush that previously sustained...
Survival rates of American woodcock wintering along the Atlantic coast
David G. Krementz, John T. Seginak, David R. Smith, Grey W. Pendleton
1994, Journal of Wildlife Management (58) 147-155
Because American woodcock (Scolopax minor) populations have been declining, we attached radio transmitters to woodcock at coastal plain sites to determine if survival during winter was involved in the decline. Sites were in Georgia (1982-84, 1989-92), South Carolina (1988-89), and Virginia (1991-92). Survival rates were not different between age or...
Chironomidae of the southeastern United States: a checklist of species and notes on biology, distribution, and habitat
Patrick L. Hudson, David R. Lenat, Broughton A. Caldwell, David Smith
1990, Fish and Wildlife Research 7
We provide a current listing of the species of midges (Diptera:Chironomidae) in the southeastern United States (Alabama, Florida, Georgia, North Carolina, South Carolina, and Tennessee). This checklist should aid research on this group of insects, which have often proved useful in the assessment of water quality. We document each species'...
Mineral resources of the Muggins Mountains Wilderness Study Area, Yuma County, Arizona
David B. Smith, R. M. Tosdal, J. A. Pitkin, M.D. Kleinkopf, R. H. Wood
1989, Bulletin 1702-D
Mineral resources of the Indian Pass and Picacho Peak Wilderness Study Areas, Imperial County, California
David B. Smith, B. R. Berger, R. M. Tosdal, D. R. Sherrod, G.L. Raines, Andrew Griscom, M.G. Helferty, Clayton M. Rumsey, A. B. McMahan
1987, Bulletin 1711-A
Leaching characteristics of ash from the May 18, 1980, eruption of Mount St. Helens Volcano, Washington
David Burl Smith, Robert A. Zielinski, Howard E. Taylor
1982, Open-File Report 82-987
Leaching of freshly erupted air-fall ash, unaffected by rain, from the May 18, 1.980,eruption of Mount St. Helens volcano, Washington, shows that Ca 2+, Na+, Mg+, SO4 2-, and Cl- are the predominant chemical species released on first exposure of the ash to water. Extremely high correlation of Ca with...
Leachability of uranium and other elements from freshly erupted volcanic ash
David B. Smith, Robert A. Zielinski, William I. Rose Jr.
1981, Open-File Report 81-118
A study of leaching of freshly erupted basaltic and dacitic air-fall ash and bomb fragment samples, unaffected by rain, shows that glass dissolution is the dominant orocess by which uranium is initially mobilized from air-fall volcanic ash. Si, Li, and V are also Preferentially mobilized by glass dissolution. Gaseous transfer...
