Factors affecting feeding behavior and survival of juvenile lake trout in the Great Lakes
Jacqueline F. Savino, Mary G. Henry, Harold L. Kincaid
1993, Transactions of the American Fisheries Society (122) 366-377
We explored the importance of experience with feeding on live prey, of cataracts, of strain, and of maternally transferred contaminants for the feeding rate and predator avoidance behavior of young lake trout Salvelinus namaycush. Hatchery-reared and feral juvenile lake trout were tested separately as predators on lake trout fry in tanks...
Dynamics of a yellow perch population in western Lake Superior
Charles R. Bronte, James H. Selgeby, Donald V. Swedberg
1993, North American Journal of Fisheries Management (13) 511-523
Yellow perch Perca flavescens were sampled annually in 1973–1988 with bottom trawls in Chequamegon Bay, Lake Superior. Biomass averaged l.6 kg/hectare. Fish l–3 years old made up 64% of the biomass, whereas fish of harvestable size (≥4 years old) made up only 31% of the biomass. Year-class strength was variable among years,...
Energy budget for yearling lake trout, Salvelinus namaycush
Donald V. Rottiers
1993, Journal of Freshwater Ecology (8) 319-327
Components of the energy budget of yearling lake trout (Salvelinus namacush) were derived from data gathered in laboratory growth and metabolism studies; values for energy lost as waste were estimated with previously published equations. Because the total caloric value of food consumed by experimental lake trout was...
Simulation of the effects of time and size at stocking on PCB accumulation in lake trout
Charles P. Madenjian, Stephen R. Carpenter
1993, Transactions of the American Fisheries Society (122) 492-499
Manipulations of size at stocking and timing of stocking have already been used to improve survival of stocked salmonines in the Great Lakes. It should be possible to stock salmonines into the Great Lakes in a way that reduces the rate of polychlorinated biphenyl (PCB) accumulation in these fishes. An...
How well can fishes prey on zebra mussels in eastern North America?
John R. P. French III
1993, Fisheries (18) 13-19
Literature on mollusk-eating fishes was reviewed to determine the potential for different species of fish to control zebra mussels in eastern North America. At least six species are potential predators of zebra mussels because they possess (1) both upper and lower pharyngeal teeth or (2) lower pharyngeal teeth and chewing...
Ebridians
J.J. Emissee, Kevin McCartney
1993, Book chapter, Fossil prokaryotes and protists
No abstract available ...
Evaluation of Telazol as an immobilization agent for captive gaur (Bos gaurus)
S.C. Wilson, D.L. Armstrong, L.G. Simmons, D.J. Morris, T. S. Gross
1993, Journal of Zoo and Wildlife Medicine (17) 65-72
Abstract not supplied at this time...
Geobacter metallireducens gen. nov. sp. nov., a microorganism capable of coupling the complete oxidation of organic compounds to the reduction of iron and other metals
Derek R. Lovley, S. J. Giovannoni, D. C. White, J. E. Champine, Elizabeth J.P. Phillips, Y.A. Gorby, S. Goodwin
1993, Archives of Microbiology (159) 336-344
The gram-negative metal-reducing microorganism, previously known as strain GS-15, was further characterized. This strict anaerobe oxidizes several short-chain fatty acids, alcohols, and monoaromatic compounds with Fe(III) as the sole electron acceptor. Furthermore, acetate is also oxidized with the reduction of Mn (IV), U (VI), and nitrate. In whole cell suspensions,...
Magma transport and metasomatism in the mantle: a critical review of current geochemical models
J. E. Nielson, H. G. Wilshire
1993, American Mineralogist (78) 1117-1134
Conflicting geochemical models of metasomatic interactions between mantle peridotite and melt all assume that mantle reactions reflect chromatographic processes. Examination of field, petrological, and compositional data suggests that the hypothesis of chromatographic fractionation based on the supposition of large-scale percolative processes needs review and revision. Well-constrained rock and mineral data...
300-Year cyclicity in organic matter preservation in Antarctic fjord sediments
E.W. Domack, T.A. Mashiotta, L.A. Burkley, S. E. Ishman
1993, Book chapter, The Antarctic paleoenvironment: A perspective on global change
No abstract available ...
Cost of living in an unpredictable environment: The ecology of striped newts Notophthalmus perstriatus during a prolonged drought
C.K. Dodd Jr.
1993, Copeia (1993) 605-614
No abstract available....
Local earthquake tomography; earthquake source regions
Donna Eberhart-Phillips
1993, Book chapter, Seismic tomography; theory and practice
No abstract available ...
Diet of double-crested cormorants wintering in Texas
J.J. Campo, B.C. Thompson, J.C. Barron, R. C. Telfair II, P. Durocher, S. Gutreuter
1993, Journal of Field Ornithology (64) 136-144
The diets of 420 Double-crested Cormorants (Phalacrocorax auritus) were studied during November 1986-March 1987 on eight public reservoirs in Texas. Prey included 29 fish species and the mean live weight of fish per bird was 122 g. Fishes a??415 mm long were ingested, but those a??125 mm accounted for 90%...
Quarterly Wildlife Mortality Report January 1993-March 1993
G. Kidd
1993, Supplement to the Journal of Wildlife Diseases (29)
No abstract available....
Application of mixed-mode, solid-phase extraction in environmental and clinical chemistry. Combining hydrogen-bonding, cation-exchange and Van der Waals interactions
M. S. Mills, E.M. Thurman, M.J. Pedersen
1993, Journal of Chromatography A (629) 11-21
Silica- and styrene-divinylbenzene-based mixed-mode resins that contain C8, C18 and sulphonated cation-exchange groups were compared for their efficiency in isolation of neutral triazine compounds from water and of the basic drug, benzoylecgonine, from urine. The triazine compounds were isolated by a combination of Van der Waals and hydrogen-bonding interactions, and...
Chemical and biotic characteristics of two low-alkalinity lakes in northern Wisconsin: relation to atmospheric deposition
K.E. Webster, J.M. Eilers, J.G. Wiener, G.E. Glass, P.J. Garrison
1993, Technical Report EPA/600/A-94/208
Synoptic surveys of water chemistry in north-central Wisconsin documented the presence of many low alkalinity lakes potentially sensitive to acid deposition. Furthermore, lake hydrologic type proved to be a key factor in determining lake sensitivity: the low alkalinity systems were predominately seepage lakes. To test this hypothesis and identify the...
A new technique for the detection of Renibacterinium salmoninarum
W. B. Schill
1993, Research Information Bulletin 101
No abstract available at this time...
Assessment of biological diversity by DNA analysis techniques
W. B. Schill
1993, Research Information Bulletin 39
No abstract available at this time...
Scour at a bridge over the Weldon River, Iowa
Edward E. Fischer
Shen Hsieh WenSu S.T.Wen Feng, editor(s)
1993, Conference Paper, Proceedings - National Conference on Hydraulic Engineering
Contraction scour at the State Highway 2 bridge over the Weldon River in south-central Iowa was caused by a flood of record proportions on September 14 and 15, 1992. The peak discharge was 1, 930 cubic meters per second,which was 4 times the probable 100-year flood used to design the...
[Book review] Battle against extinction: Native fish management in the American West, by W. L. Minckley and J. E. Deacon
S. J. Walsh
1993, Copeia (1993) 572-573
Review of: BATTLE AGAINST EXTINCTION: NATIVE FISH MANAGEMENT IN THE AMERICAN WEST. W. L. Minckley and J. E. Deacon (eds.). 1991. The University of Arizona Press, Tucson. ISBN 0-8165-1221-3. 517 p., $40.00 (hardcover)....
Non-shear focal mechanisms of earthquakes at The Geysers, California and Hengill, Iceland, geothermal areas
B.R. Julian, A.D. Miller, G.R. Foulger
Anon, editor(s)
1993, Conference Paper, Transactions - Geothermal Resources Council
Several thousand earthquakes were recorded in each area. We report an initial investigation of the focal mechanisms based on P-wave polarities. Distortion by complicated three-dimensional crustal structure was minimized using tomographically derived three-dimensional crustal models. Events with explosive and implosive source mechanisms, suggesting cavity opening and collapse, have been tentatively...
Application of Conjugate Gradient methods to tidal simulation
E. Barragy, G. F. Carey, R. A. Walters
1993, Advances in Water Resources (16) 163-171
A harmonic decomposition technique is applied to the shallow water equations to yield a complex, nonsymmetric, nonlinear, Helmholtz type problem for the sea surface and an accompanying complex, nonlinear diagonal problem for the velocities. The equation for the sea surface is linearized using successive approximation and then discretized with linear,...
Monte Carlo simulations of multiphase flow incorporating spatial variability of hydraulic properties
Hedeff I. Essaid, Kathryn M. Hess
1993, Groundwater (31) 123-134
To study the effect of spatial variability of sediment hydraulic properties on multiphase flow, oil infiltration into a hypothetical glacial outwash aquifer, followed by oil extraction, was simulated using a cross-sectional multiphase flow model. The analysis was simplified by neglecting capillary hysteresis. The first simulation used a uniform mean permeability...
Status of the northern elephant seal population along the U.S. west coast in 1992
J. Barlow, P. Boveng, M.S. Lowry, B.S. Stewart, B. J. Le Boeuf, W.J. Sydeman, R.J. Jameson, S.G. Allen, C.W. Oliver
1993, Administrative Report LJ-93-01
No abstract available at this time...
Geological context and concepts of mineralization in the Charters Towers region
J.S. Hartley, S. G. Peters, S.D. Beams
R. A. Henderson, editor(s)
1993, Book chapter, Guide to the economic geology of the Charters Towers region, northeastern Queensland
No abstract available ...
