A sampling method for conducting relocation studies with freshwater mussels
D. L. Waller, J.J. Rach, W.G. Cope, J.A. Luoma
1993, Journal of Freshwater Ecology (8) 397-399
Low recovery of transplanted mussels often prevents accurate estimates of survival. We developed a method that provided a high recovery of transplanted mussels and allowed for a reliable assessment of mortality.A 3 × 3 m polyvinyl chloride (PVC) pipe grid was secured to the sediment with iron reinforcing bars....
Aspects of numerical and representational methods related to the finite-difference simulation of advective and dispersive transport of freshwater in a thin brackish aquifer
M. L. Merritt
1993, Journal of Hydrology (148) 61-92
The simulation of the transport of injected freshwater in a thin brackish aquifer, overlain and underlain by confining layers containing more saline water, is shown to be influenced by the choice of the finite-difference approximation method, the algorithm for representing vertical advective and dispersive fluxes, and the values assigned to...
Accessibility of geotechnical earthquake Engineering data and the need for data storage and dissemination standards
Arthur C. Tarr
1993, Conference Paper, Geographic Information Systems and Their Application in Geotechnical Earthquake Engineering
Ease of data access and data standards are two issues critical to the success of GIS technology when applied to earthquake hazards research problems that require geotechnical engineering and related data. Efforts to reduce data accession costs and to streamline the data exchange process will result in short-term cost and...
Vitamin E in cranes: Reference ranges and nutrient interactions
Ellen S. Dierenfeld, C.D. Sheppard, J. Langenberg, C. Mirande, J. Spratt, F. J. Dein
1993, Journal of Wildlife Diseases (29) 98-102
Fat soluble vitamins E and A (quantified as α-tocopherol and all-trans retinol, respectively) were measured in plasma samples from 274 captive cranes from four institutions and five free-ranging birds. Ages ranged from 4 mo to 80 yr, and all 15 crane species were represented. Captive cranes had a mean ±...
Quarterly Wildlife Mortality Report July 1992- September 1992
G. Kidd
1993, Supplement to the Journal of Wildlife Diseases (29)
No abstract available....
Results of interlaboratory comparison of fission track ages for 1992 fission track workshop
D. S. Miller, K.D. Crowley, R.K. Dokka, R.F. Galbraith, B. J. Kowallis, C. W. Naeser
1993, Nuclear Tracks and Radiation Measurements (21) 565-573
Two apatites and one sphene were made available to the fission track research community for analysis prior to the 1992 Fission Track Workshop held in Philadelphia, U.S.A., 13-17 July. Eighteen laboratories throughout the world received aliquots of apatite and sphene. To date, analyses by 33 different scientists have been representing...
Using a GIS to link digital spatial data and the precipitation-runoff modeling system, Gunnison River Basin, Colorado
William A. Battaglin, Gerhard Kuhn, Randolph S. Parker
1993, Conference Paper, Proceedings of the Second international conference/workshop on Integrating geographic information systems and environmental modeling
The U.S. Geological Survey Precipitation-Runoff Modeling System, a modular, distributed-parameter, watershed-modeling system, is being applied to 20 smaller watersheds within the Gunnison River basin. The model is used to derive a daily water balance for subareas in a watershed, ultimately...
Quarterly Wildlife Mortality Report January 1993-March 1993
G. Kidd
1993, Supplement to the Journal of Wildlife Diseases (29)
No abstract available....
Genetic and tagging evidence for movement of walleyes between Lake Erie and Lake St. Clair
Thomas N. Todd, Robert C. Haas
1993, Journal of Great Lakes Research (19) 445-452
Walleyes (Stizostedion vitreum vitreum) from Lake Erie differed in allele frequencies from walleyes in Lake St. Clair (N = 1,680; 25 loci); however, only slight differences were found among walleyes from different spawning sites in each lake. Analyses of allele frequency data from samples of nonspawning walleyes taken in Lake...
Selecting islands and shoals for conservation based on biological and aesthetic criteria
M. G. Knutson, D.J. Leopold, R.C. Smardon
1993, Environmental Management (17) 199-210
Consideration of biological quality has long been an important component of rating areas for conservation. Often these same areas are highly valued by people for aesthetic reasons, creating demands for housing and recreation that may conflict with protection plans for these habitats. Most methods of selecting land for conservation purposes...
Inferred depth of creep on the Hayward Fault, central California
J.C. Savage, M. Lisowski
1993, Journal of Geophysical Research (98) 787-793
A relation between creep rate at the surface trace of a fault, the depth to the bottom of the creeping zone, and the rate of stress accumulation on the fault is derived from Weertman's 1964 friction model of slip on a fault. A 5 ± 1...
Geologic research in support of sustainable agriculture
L. P. Gough, J. R. Herring
1993, Agriculture, Ecosystems and Environment (46) 55-68
The importance and role of the geosciences in studies of sustainable agriculture include such traditional research areas as, agromineral resource assessments, the mapping and classification of soils and soil amendments, and the evaluation of landscapes for their vulnerability to physical and chemical degradation. Less traditional areas of study, that are...
Experimental dynamic metamorphism of mineral single crystals
S. H. Kirby, L.A. Stern
1993, Journal of Structural Geology (15) 1223-1240
This paper is a review of some of the rich and varied interactions between non-hydrostatic stress and phase transformations or mineral reactions, drawn mainly from results of experiments done on mineral single crystals in our laboratory or our co-authors. The state of stress and inelastic deformation can enter explicitly into...
An in vitro technique for surveying immunostimulants in fish
G. Jeney, Douglas P. Anderson
1993, Aquaculture (112) 283-287
In vitro assays were developed to investigate the effects of immunostimulants on leukocytes in spleen sections of rainbow trout (Oncorhynchus mykiss). Fish spleens were divided, and individual sections were placed in 10 ml of tissue culture media and 0.1, 1, 10, or 100 μg/ml dilutions of Levamisole, QAC (quaternary ammonium...
Gravity-induced stresses near a vertical cliff
W. Z. Savage
1993, International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts (30) 325-330
The exact solution for gravity-induced stresses beneath a vertical cliff presented here has application to the design of cut slopes in rock, compares favorably with published photoelastic and finite-element results for this problem, and satisfies the condition that shear and normal stresses vanish on the ground surface, except at the...
Anadromous fish behavior important for fish passage
B. Kynard
1993, Canadian Technical Report of Fisheries and Aquatic Sciences (1905) 95-105
Geophysical characteristics of the hydrothermal systems of Kilauea volcano, Hawaii
J. Kauahikaua
1993, Geothermics (22) 271-299
Clues to the overall structure of Kilauea volcano can be obtained from spatial studies of gravity, magnetic, and seismic velocity variations. The rift zones and summit are underlain by dense, magnetic, high P-wave-velocity rocks at depths of about 2 km less. The gravity and seismic velocity studies indicate that the...
In vitro antigen trapping by gill cells of the rainbow trout: an immunohistochemical study
M. Torroba, D. P. Anderson, O. W. Dixon, F. Casares, A. Varas, L. Alonso, M. Gomez del Moral, A.G. Zapata
1993, Histology and Histopathology (8) 363-367
Prediction of hydrocarbons in sedimentary basins
J.E. Harff, J.C. Davis, W. Eiserbeck
1993, Mathematical Geology (25) 925-936
To estimate the undiscovered hydrocarbon potential of sedimentary basins, quantitative play assessments specific for each location in a region may be obtained using geostatistical methods combined with the theory of classification of geological objects, a methodology referred to as regionalization. The technique relies on process modeling and measured borehole data...
Effects of one-year exposures to gas supersaturation on lake trout
W. F. Krise
1993, Progressive Fish-Culturist (55) 169-176
Lake trout (Salvelinus namaycush) were reared for 1 year in water with one of six levels of incoming differential gas pressure (▵P): 4, 17, 33, 43, 58, or 75 mm Hg. Growth and survival of fish were evaluated as measures of response to the potential long‐term stress of elevated dissolved...
Operation of a real-time warning system for debris flows in the San Francisco bay area, California
Raymond C. Wilson, Robert K. Mark, Gary Barbato
Shen Hsieh WenSu S.T.Wen Feng, editor(s)
1993, Conference Paper, Proceedings - National Conference on Hydraulic Engineering
The United States Geological Survey (USGS) and the National Weather Service (NWS) have developed an operational warning system for debris flows during severe rainstorms in the San Francisco Bay region. The NWS makes quantitative forecasts of precipitation from storm systems approaching the Bay area and coordinates a regional network of...
Relationship between the amount of bone, major cations, and body size in Atlantic salmon, Salmo salar
D. V. Rottiers
1993, Copeia (1993) 440-446
No abstract available....
Generation of aliphatic acid anions and carbon dioxide by hydrous pyrolysis of crude oils
Y.K. Kharaka, P.D. Lundegard, G. Ambats, William C. Evans, J. L. Bischoff
1993, Applied Geochemistry (8) 317-324
Two crude oils with relatively high (0.60 wt%) and low (0.18 wt%) oxygen contents were heated in the presence of water in gold-plated reactors at 300??C for 2348 h. The high-oxygen oil was also heated at 200??C for 5711 h. The compositions of aqueous organic acid anions of the oils...
Trace metals (Cd, Cu, Ni, and Zn) and nutrients in coastal waters adjacent to San Francisco Bay, California
A. VanGeen, Samuel N. Luoma
1993, Estuaries (16) 559-566
Samples collected in December 1990 and July 1991 show that dissolved Cd, Cu, Ni, and Zn distributions in the Gulf of the Farallones are dominated by mixing of two end-members: (1) metal-enriched San Francisco Bay water and (2) offshore California Current water. The range of dissolved metal concentrations observed is...
Geologic and hydrologic hazards in glacierized basins in North America resulting from 19th and 20th century global warming
J. E. O’Connor, J. E. Costa
1993, Natural Hazards (8) 121-140
Alpine glacier retreat resulting from global warming since the close of the Little Ice Age in the 19th and 20th centuries has increased the risk and incidence of some geologic and hydrologic hazards in mountainous alpine regions of North America. Abundant loose debris in recently deglaciated areas at the toe...
