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Page 3954, results 98826 - 98850

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Selected hydrologic data for farmland treated with sewage sludge near Platteville, Colorado, 1985-91
David A. Johncox, Neville G. Gaggiani
1991, Open-File Report 91-529
The U.S. Geological Survey, in cooperation with the Metro Wastewater Reclamation District, studied the ground-water-quality effects of the application of anaerobic digested municipal sewage sludge at agronomic rates to farmland near Platteville. Beginning in the fall of 1985, the sludge was injected annually into the sandy farmland in a...
Water resources data, Mississippi, water year 1990
M.L. Plunkett, F. Morris, W. T. Oakley
1991, Water Data Report MS-90-1
Water resources data for the 1990 water year for Mississippi consist of records of stage, discharge, and water quality of streams; stage, and water quality of lakes and reservoirs and water levels and water quality of ground-water wells. This report contains records of water discharge at 78 gaging stations; stage...
Chufa biology and management
Leigh H. Fredrickson, James R. Kelley Jr.
1991, Fish and Wildlife Leaflet 13.4.18
Chufa (Cyperus esculentus) is an emergent perennial sedge that is common in seasonally flooded wetlands. Although chufa is common in many States, it is most abundant in the Southeast, including the Mississippi alluvial valley (Fig. 1). Belowground biomass of chufa, especially the tubers, serves as a valuable food source for...
Long-term decline in freshwater mussels (Bivalvia: Unionidae) of the western basin of Lake Erie
Thomas F. Nalepa, Bruce A. Manny, James C. Roth, Samuel C. Mozley, Donald W. Schloesser
1991, Journal of Great Lakes Research (17) 214-219
Long-term trends in the abundance of unionids in the western basin of Lake Erie were examined from data collected at 17 stations in 1961, 1972, and 1982. The mean number of unionids at these stations declined over this time period, decreasing from 10 m−2 in 1961, to 6 m−2 in...
Time-courses in the retention of food material in the bivalves Potamocorbula amurensis and Macoma balthica significance to the absorption of carbon and chromium
Alan W. Decho, Samuel N. Luoma
1991, Marine Ecology Progress Series (78) 303-314
Time courses for ingestion, retention and release via feces of microbial food was investigated using 2 bivalves with different feeding strategies, Potamocorbula amurensis and Macoma balthica. The results showed 2 pathways for the uptake of food material in these clams. The first is represented by an initial label pulse in the feces. The...
Crustal structure interpreted from magnetic anomalies
Jeffrey Phillips, Richard J. Reynolds, Herbert Frey
1991, Reviews of Geophysics (29) 416-427
In this review, we discuss publications during the last quadrennium (1987–1990) that used aeromagnetic data, marine magnetic data, satellite magnetic data, and rock magnetic and petrologic data to provide information on the sources of magnetic anomalies. Abstracts and papers by non‐U.S. authors are not described.The publications reviewed reflect increased integration...
Fractal hierarchies of magma transport in Hawaii and critical self- organization of tremor
H. R. Shaw, B. Chouet
1991, Journal of Geophysical Research (96) 10,191-10,207
A hierarchical model of magma transport in Hawaii is developed from the seismic records of deep (30-60 km) and intermediate-depth (5-15 km) harmonic tremor between January 1, 1962, and December 31, 1983. A tremor model of magma transport is developed from mass balances of percolation that are proportional to tremor...
USFWS selected geographic analyses
Floyd O. Stayner, James D. Scurry, James B. Johnston, Mary C. Watzin, Pasquale F. Roscigno
1991, Conference Paper, Coastal zone '91: Proceedings of the seventh symposium on coastal and ocean management
The geographic information system (GIS) used by the National Wetlands Research Center (NWRC) of the U.S. Fish and Wildlife Service has been valuable in assisting natural resource managers in planning and managing coastal fish and wildlife resources. In the past 5 years, NWRC has conducted about 60 studies employing this...
Estimating wintering Bald Eagle densities in the Mississippi Alluvial Valley
Mike Brown, James R. Nassar
1991, Journal of Raptor Research 40-42
Surveys on the winter distribution of Bald Eagles have been concentrated in the northern USA (Hastings 1988, Mattson 1988), where Bald Eagles are most common. Few density estimates for wintering Bald Eagles exist. In the past, different survey techniques with little standardization have been used. Statistical analyses and error measurements of existing winter survey...
Global climate change: USFWS coastal research
Janet R. Keough, Thomas W. Doyle, Robert E. Stewart Jr.
1991, Conference Paper, Coastal zone '91 : Proceedings of the seventh symposium on coastal and ocean management
Scenarios of global climate change are still ambiguous; however, increasing sea level and atmospheric carbon dioxide (CO2) concentrations seem certain, although rates of change are still being debated. Predictions for other aspects of climate change, such as temperature, tropical storm frequency and intensity, and precipitation, are still in debate, and...