The role of groundwater transport in aquatic mercury cycling
David P. Krabbenhoft, Christopher L. Babiarz
1992, Water Resources Research (28) 3119-3128
Mercury, which is transported globally by atmospheric pathways to remote aquatic environments, is a ubiquitous contaminant at very low (nanograms Hg per liter) aqueous concentrations. Until recently, however, analytical and sampling techniques were not available for freshwater systems to quantify the actual levels of mercury concentrations without introducing significant contamination...
Monitoring radionuclide and suspended-sediment transport in the Little Colorado River basin, Arizona and New Mexico, USA
John R. Gray, Gregory G. Fisk
1992, Conference Paper, Erosion and Sediment Transport Monitoring Programmes in River Basins: Proceedings of the Oslo Symposium, August 1992
From July 1988 through September 1991, radionuclide and suspended-sediment transport were monitored in ephemeral streams in the semiarid Little Colorado River basin of Arizona and New Mexico, USA, where in-stream gross-alpha plus gross-beta activities have exceeded Arizona's Maximum Allowable Limit through releases from natural weathering processes and from uranium-mining...
Chemical ions affect survival of avian cholera organisms in pondwater
J.I. Price, B.S. Yandell, W.P. Porter
1992, Journal of Wildlife Management (56) 274-278
Avian cholera (Pasteurella multocida) is a major disease of wild waterfowl, but its epizootiology remains little understood. Consequently, we examined whether chemical ions affected survival of avian cholera organisms in water collected from the Nebraska Rainwater Basin where avian cholera is enzootic. We tested the response of P. multocida to...
The zebra mussel (Dreissena polymorpha), a new pest in North America: reproductive mechanisms as possible targets of control strategies
Jeffrey L. Ram, Peter Fong, Roger P. Croll, Susan J. Nichols, Darcie Wall
1992, Invertebrate Reproduction and Development (22) 77-86
The zebra mussel (Dreissena polymorpha) has spread rapidly in temperate fresh waters of North America since its introduction into the Great Lakes in 1985 or 1986. It attaches to hard substrates, forming layers, occluding water intakes, encrusting and killing native mussels, filtering algae in competition with other planktivores, and...
1993 Fiscal Year Water Resources Division Information Guide
Water Resources Division, U.S. Geological Survey
1992, Report
This Guide briefly describes the Water Resources Division's mission, program, and organizational structure, and where and how to obtain specific types of hydrologic information. The Guide also contains a listing of addresses, telephone numbers, and office hours for Headquarters, Regional, District, and State offices. For some offices, two addresses are...
Water Resources Data, New Jersey, Water Year 1991. Volume 2. Ground-Water Data
W.R. Bauersfeld, W.D. Jones, E.A. Pustay
1992, Water Data Report NJ-91-2
Water Resources data for the 1991 water year for New Jersey consists of records of stage, discharge, and water quality of streams; stage, contents, and water quality of lakes and reservoirs; and water levels and water quality of ground water. Volume 2 contains records of ground-water levels from 241 wells...
Water Resources Data, New Jersey, Water Year 1991, Volume 1. Surface-Water Data
W.R. Bauersfeld, E.W. Moshinsky, E.A. Pustay
1992, Water Data Report NJ-91-1
Water resources data for the 1991 water year for New Jersey consists of records of stage, discharge, and water quality of streams; stage, contents, and water quality of lakes and reservoirs; and water levels and water quality of ground water. This volume of the report contains discharge records for 95...
Cartographic applications software
Water Resources Division, U.S. Geological Survey
1992, Report
The Office of the Assistant Division Chief for Research, National Mapping Division, develops computer software for the solution of geometronic problems in the fields of surveying, geodesy, remote sensing, and photogrammetry. Software that has been developed using public funds is available on request for a nominal charge to recover the...
Planetary maps
Water Resources Division, U.S. Geological Survey
1992, Report
An important goal of the USGS planetary mapping program is to systematically map the geology of the Moon, Mars, Venus, and Mercury, and the satellites of the outer planets. These geologic maps are published in the USGS Miscellaneous Investigations (I) Series. Planetary maps on sale at the USGS include shaded-relief...
US GeoData
Water Resources Division, U.S. Geological Survey
1992, Report
US GeoData tapes are computer tapes which contain cartographic data in digital form. The 1:2,000,000-scale data are available in two forms. The graphic form can be used to generate computer-plotted maps. The content and scale of the maps can be varied to meet your needs. The topologically-structured form of US...
United States Geological Survey Yearbook, fiscal year 1991
Water Resources Division, U.S. Geological Survey
1992, Report
The fiscal year 1991 Yearbook summarizes the activities of the U.S. Geological Survey in response to its scientific and regulatory missions....
Global Land Information System (GLIS)
Water Resources Division, U.S. Geological Survey
1992, Report
The Global Land Information System (GLIS) is an interactive computer system developed by the U.S. Geological Survey (USGS) for scientists seeking sources of information about the Earth's land surfaces. GLIS contains "metadata," that is, descriptive information about data sets. Through GLIS, scientists can evaluate data sets, determine their availability, and...
An egg injection method for assessing early life stage mortality of polychlorinated dibenzo-p-dioxins, dibenzofurans, and biphenyls in rainbow trout, (Oncorhynchus mykiss)
M.K. Walker, L.C. Hufnagle Jr., M.K. Clayton, R. E. Peterson
1992, Aquatic Toxicology (22) 15-37
To characterize the risk that polychlorinated dibenzo-p-dioxins (PCDDs), dibenzofurans (PCDFs), and biphenyls (PCBs) pose to salmonid early life stage survival, we developed a method to expose rainbow trout (Oncorhynchus mykiss) eggs to graded doses of PCDD, PCDF, and PCB congeners, using 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) as a prototype. Rainbow trout eggs were...
Effects of chronic exposure to soft, acidic water on gill development and chloride cell numbers in embryo-larval brook trout, Salvelinus fontinalis
D.J. Conklin, R.C. Mowbray, W.H. Gingerich
1992, Aquatic Toxicology (22) 39-52
Recruitment failure is considered to be a major factor contributing to the decline of fish populations in soft, acidic waters; direct mortality of embryo-larval fishes has been postulated as a major cause of the decline. Little is understood of the physiological consequences to embryo-larval fishes of prolonged exposure to soft,...
Map scales
Water Resources Division, U.S. Geological Survey
1992, Report
To be most useful, a map must show locations and distances accurately on a sheet of paper of convenient size. This means that everything included in the map ground area, distance, rivers, lakes, roads, and so on must be shown proportionately smaller than it really is. The proportion chosen for...
Outdoors America: recreational opportunites on public lands
Water Resources Division, U.S. Geological Survey
1992, Report
What comes to your mind when you think of outdoor recreation? Boating? Camping? Hiking or backpacking? Horse-back riding? Hunting or fishing? Chances are, if you can name an outdoor activity, you can do it on public lands....
Effect of rising sea level on runoff and groundwater discharge to coastal ecosystems
W.K. Nuttle, J. W. Portnoy
1992, Estuarine, Coastal and Shelf Science (34) 203-212
Rising sea level can cause an increase in surface runoff from coastal areas by raising the watertable and thus increasing the incidence of saturated soil conditions in low-lying areas. As surface runoff increases, less rainfall will infiltrate into the ground and groundwater discharge to the coast will decrease....
Water depth predicts redhead distribution in the lower Laguna Madre, Texas
C. A. Mitchell
1992, Wildlife Society Bulletin (20) 420-424
Redhead duck behavior on lower Laguna Madre and adjacent ponds of southern Texas
C. A. Mitchell, T. W. Custer, P.J. Zwank
1992, Southwestern Naturalist (37) 65-72
Behavior of redheads (Aythya americana) during winter was studied on the hypersaline lower Laguna Madre and adjacent freshwater to brackish water ponds of southern Texas. On Laguna Madre, feeding (46%) and sleeping (37%) were the most common behaviors. Redheads fed more during early morning (64%) than during the rest of...
Determination of hatching date for eggs of black-crowned night-herons, snowy egrets and great egrets
T. W. Custer, G.W. Pendleton, R.W. Roach
1992, Journal of Field Ornithology (63) 145-154
Flotation of eggs in water and specific gravity of eggs of Black-crowned Night-Herons (Nycticorax nycticorax), Snowy Egrets (Egretta thula) and Great Egrets (Casmerodius albus) were evaluated as methods to determine date of hatching. Length of incubation and duration of hatching period were also documented for each species. Although species gravity...
Uptake of environmental contaminants by small mammals in pickleweed habitats at San Francisco Bay, California
D. R. Clark Jr., K.S. Foerster, C. M. Marn, R. L. Hothem
1992, Archives of Environmental Contamination and Toxicology (22) 389-396
Small mammals were live-trapped in pickleweed (Salicornia virginica) habitats near San Francisco Bay, California in order to measure the uptake of several contaminants and to evaluate the potential effects of these contaminants on the endangered salt marsh harvest mouse (Reithrodontomys raviventris). Tissues of house mice (Mus musculus), deer mice (Peromyscus...
Variations in the fine-scale composition of a central Pacific ferromanganese crust: Paleoceanographic implications
J.R. Hein, W.A. Bohrson, M. S. Schulz, M. Noble, D.A. Clague
1992, Paleoceanography and Paleoclimatology (7) 63-77
A 47- to 60-mm-thick Fe-Mn crust from Horizon Guyot (water depth 1800–1780 m), central Pacific, was used to evaluate the potential of crusts as recorders of Neogene paleoceanographic and paleoclimatic conditions. The chemical composition was determined by microprobe for 16 elements from a polished thin section. Three analyses were made...
An evaluation of regression methods to estimate nutritional condition of canvasbacks and other water birds
D. W. Sparling, J.A. Barzen, J.R. Lovvorn, J.R. Serie
1992, Biological Report 3
Regression equations that use mensural data to estimate body condition have been developed for several water birds. These equations often have been based on data that represent different sexes, age classes, or seasons, without being adequately tested for intergroup differences. We used proximate carcass analysis of 538 adult...
DUCKDATA; A Bibliographic Data Base for North American Waterfowl (Anatidae) and their Wetland Habitats
K. J. Reinecke, Don Delnicki
1992, Resource Publication 186
No abstract available....
Diflubenzuron Hazards to Fish, Wildlife and Invertebrates: A Synoptic Review
R. Eisler
1992, Contaminant Hazard Reviews Report 25 ; Biological Report 4
Diflubenzuron (1(4chlorophenyl)3(2,6difluorobenzoyl)urea), also known as dimilin, is a potent broad spectrum insect growth regulator that interferes with chitin synthesis at time of molting and is effective in controlling immature stages of insects. Diflubenzuron was approved for domestic use in 1976 to control gypsy moth (Lymantria dispar), and in 1979...
