Development of a benthic invertebrate objective for mesotrophic Great Lakes waters
Trefor B. Reynoldson, Donald W. Schloesser, Bruce A. Manny
1989, Journal of Great Lakes Research (15) 669-686
A biological indicator of mesotrophic conditions should (1) provide an appropriate and interpretable objective; (2) be achievable if corrective measures are taken (i.e., it should be within the expected environmental range of the system); and (3) allow measurement of progress toward the objective. Historical data from the Great Lakes suggest...
Side-scan sonar mapping of lake trout spawning habitat in northern Lake Michigan
Thomas A. Edsall, Thomas P. Poe, Robert T. Nester, Charles L. Brown
1989, North American Journal of Fisheries Management (9) 269-279
Native stocks of lake trout Salvelinus namaycush were virtually or completely extirpated from the lower four Great Lakes by the early 1960s. The failure of early attempts to reestablish self-sustaining populations of lake trout was attributed partly to the practice of stocking hatcheryreared juveniles at locations and over substrates that had...
Effect of dietary moisture level on response to diet by Atlantic salmon
S. G. Hughes
1989, Progressive Fish-Culturist (51) 20-23
The addition of moisture (water) to a diet had no positive effect on the weight gain of fingerlings of Atlantic salmon (Salmo salar). Moisture additions up to 30% actually reduced weight gain by up to 10%. Diet moisture level is not the primary factor in the acceptability of some moist...
Movements of striped mullet, Mugil cephalus, tagged in Everglades National Park, Florida
N.A. Funicelli, D.A. Meineke, H.E. Bryant, M. R. Dewey, G.M. Ludwig, L.S. Mengel
1989, Bulletin of Marine Science (44) 171-178
The movements of striped mullet, Mugil cephalus, were studied from fish tagged in Everglades National Park. Florida. A total of 16,604 fish were tagged from March 1984 to September 1985. During the period December 1984 through February 1985 recaptured tagged fish moved significantly further and more northerly out of the...
Nitrogen dynamics in the tidal freshwater Potomac River, Maryland and Virginia, water years 1979-81
David J. Shultz
1989, Water Supply Paper 2234-J
On an annual basis, river-supplied nitrate is the predominant form of nitrogen supplied to the tidal Potomac River from external sources. Much of the nitrate is associated with high flows that have rapid transit times through the tidal river. The Blue Plains Sewage-Treatment Plant (STP) at Washington, D.C., is the...
An investigation of shallow ground-water quality near East Fork Poplar Creek, Oak Ridge, Tennessee
J. K. Carmichael
1989, Water-Resources Investigations Report 88-4219
Alluvial soils of the flood plain of East Fork Poplar Creek in Oak Ridge, Tennessee, are contaminated with mercury and other metals, organic compounds, and radio-nuclides originating from the Y-12 Plant, a nuclear-processing facility located within the U.S. Department of Energy 's Oak Ridge Reservation. Observation wells were installed in...
Selected ground-water data, Chester County, Pennsylvania
Ronald A. Sloto
1989, Open-File Report 87-217
Hydrologic data for Chester County, Pennsylvania are given for 3,010 wells and 32 springs. Water levels are given for 48 observation wells measured monthly during 1936-86. Chemical analyses of ground water are given for major ions, physical properties, nutrients, metals and other trace constituents, volatile organic compounds, acid organic compounds,...
Analytical results for ten water-extractable ions from B-horizon soils on St. Thomas and St. Croix, U.S. Virgin Islands and K-Ar ages for seven rocks from St. John and St. Thomas, U.S. Virgin Islands
J. B. McHugh, R. E. Tucker, H. V. Alminas
1989, Open-File Report 89-563
No abstract available....
Vegetation of wetlands of the prairie pothole region
H.A. Kantrud, J.B. Millar, A.G. Van Der Valk
A. van der Valk, editor(s)
1989, Book chapter, Northern prairie wetlands
Five themes dominate the literature dealing with the vegetation of palustrine and lacustrine wetlands of the prairie pothole region: environmental conditions (water or moisture regime, salinity), agricultural disturbances (draining, grazing, burning, sedimentation, etc.), vegetation dynamics, zonation patterns, and classification of the wetlands.The flora of a prairie wetland is a function...
Transition 1988: earth science in the public service
Water Resources Division, U.S. Geological Survey
1989, Report
No abstract available....
Artificial recharge to the Floridan aquifer system, Orlando Area, Central Florida
E. R. German, L. A. Bradner
1989, Conference Paper
Approximately 400 drainage wells exist in Orange County, central Florida. The rate of recharge through drainage wells is limited by the rate of surface flow to the wells; the hydraulic properties of weirs, overflow pipes, and well casings; or the water level above the top of the casing. The rate...
Boron isotopic composition of tourmaline from massive sulfide deposits and tourmalinites
M. R. Palmer, J. F. Slack
1989, Contributions to Mineralogy and Petrology (103) 434-451
Boron isotope ratios (11B/10B) have been measured on 60 tourmaline separates from over 40 massive sulfide deposits and tourmalinites from a variety of geologic and tectonic settings. The coverage of these localities is global (5 continents) and includes the giant ore bodies at Kidd Creek and Sullivan (Canada), Broken Hill...
Effect of site conditions on ground motion and damage
R. Borcherdt, G. Glassmoyer, M. Andrews, E. Cranswick
1989, Earthquake Spectra (5) 23-42
Results of seismologic studies conducted by the U.S. reconnaissance team in conjunction with Soviet colleagues following the tragic earthquakes of December 7, 1988, suggest that site conditions may have been a major factor in contributing to increased damage levels in Leninakan. As the potential severity of these effects in Leninakan...
Introduction to the hydrogeochemical investigations within the International Stripa Project
D. Kirk Nordstrom, T. Olsson, L. Carlsson, P. Fritz
1989, Geochimica et Cosmochimica Acta (53) 1717-1726
The International Stripa Project (1980-1990) has sponsored hydrogeochemical investigations at several subsurface drillholes in the granitic portion of an abandoned iron ore mine, central Sweden. The purpose has been to advance our understanding of geochemical processes in crystalline bedrock that may affect the safety assessment of high-level radioactive waste repositories....
Bias in groundwater samples caused by wellbore flow
Thomas E. Reilly, O. Lehn Franke, Gordon D. Bennett
1989, Journal of Hydraulic Engineering (115) 270-276
Design of physical installations and sampling procedures for ground-water monitoring networks, particularly for detection and analysis of possible contaminants, is a topic of great scientific and practical interest at the present time. Recent practice in the design of monitoring networks associated with known contaminant sources sometimes includes an array of...
Erosion in the juniata river drainage basin, Pennsylvania
W. D. Sevon
1989, Geomorphology (2) 303-318
Previously calculated erosion rates througouth the Appalachians range from 1.2 to 203 m Myr−1. Calculation of erosion rates has been accomplished by: (1) evaluation of riverine solute and sediment load in either large or small drainage basins; (2) estimation from the volume...
An attempt to obtain a detailed declination chart from the United States magnetic anomaly map
L.R. Alldredge
1989, Journal of Geomagnetism & Geoelectricity (41) 549-563
Modern declination charts of the United States show almost no details. Greater detail may be of value to surveyors trying to follow old land deed descriptions, or to pilots of small planes or small pleasure boats operating in inland waterways. It would be extremely expensive to make adequate...
Chemistry and origin of minor and trace elements in vitrinite concentrates from a rank series from the eastern United States, England, and Australia
P.C. Lyons, C.A. Palmer, N. H. Bostick, J.D. Fletcher, F.T. Dulong, F. W. Brown, Z. A. Brown, M.R. Krasnow, L.A. Romankiw
1989, International Journal of Coal Geology (13) 481-527
A rank series consisting of twelve vitrinite concentrates and companion whole-coal samples from mined coal beds in the eastern United States, England, and Australia were analyzed for C, H, N, O, ash, and 47 trace and minor elements by standard elemental,...
Geochemical controls of vanadium accumulation in fossil fuels
G. N. Breit, R. B. Wanty
1989, Conference Paper, American Chemical Society, Division of Petroleum Chemistry, Preprints
High vanadium contents in petroleum and other fossil fuels have been attributed to organic-matter type, organisms, volcanic emanations, diffusion of sea water, and epigenetic enrichment. However, these factors are inadequate to account for the high abundance of vanadium in some fossil fuels and the paucity in others. By examining vanadium...
Estimating constituent loads
Timothy A. Cohn, Lewis L. DeLong, Edward J. Gilroy, Robert M. Hirsch, Deborah K. Wells
1989, Water Resources Research (25) 937-942
Several recent articles have called attention to the problem of retransformation bias, which can arise when log linear regression models are used to estimate sediment or other constituent loads. In some cases the bias can lead to underestimation of constituent loads by as much as 50%, and several procedures have...
Peak outflow from a breached embankment dam
David C. Froehlich
1989, Conference Paper
A relation for rapidly predicting the peak outflow rate from a breached embankment dam has been presented. The prediction equation is based on reliable data from 19 embankment dam failures and requires as input the volume of water in the reservoir at the time a breach begins to form, and...
Accounting for intracell flow in models with emphasis on water table recharge and stream-aquifer interaction: 2. A procedure
Donald G. Jorgensen, Donald C. Signor, Jeffrey L. Imes
1989, Water Resources Research (25) 677-684
Intercepted intracell flow, especially if cell includes water table recharge and a stream ((sink), can result in significant model error if not accounted for. A procedure utilizing net flow per cell (Fn) that accounts for intercepted intracell flow can be used for both steady state and transient simulations. Germane to...
Diagnostic foraminiferal assemblages of Florida Bay and adjacent shallow waters: a comparison
B. H. Lidz, P.R. Rose
1989, Bulletin of Marine Science (44) 399-418
Ecologic studies of benthic Foraminifera in Florida Bay indicate that 1) the bay is a specialized restricted platform interior environment; 2) its fauna is divisible into 3 subfaunas: nearshore, mudbank, and "lake', 3) substrate, currents, wave intensity, and wave direction affect local distribution but do not alter regional patterns; and...
Determination of herbicides and their degradation products in surface waters by gas chromatography/positive chemical ionization/tandem mass spectrometry
C.E. Rostad, W. E. Pereira, T.J. Leiker
1989, Biological Mass Spectrometry (18) 820-827
[No abstract available]...
Review of factors affecting recovery of freshwater stored in saline aquifers
Michael L. Merritt
1989, Conference Paper
A simulation analysis reported previously, and summarized herein, identified the effects of various geohydrologic and operational factors on recoverability of the injected water. Buoyancy stratification, downgradient advection, and hydrodynamic dispersion are the principal natural processes that reduce the amount of injected water that can be recovered. Buoyancy stratification is shown...
