Growth and survival of Atlantic salmon fed semimoist or dry starter diets
C. A. Lemm
1983, Progressive Fish-Culturist (45) 72-75
Growth and survival were compared for first‐feeding fry of Atlantic salmon (Salmo salar) fed a closed‐formula commercial preparation, BioDiet, or U.S. Fish and Wildlife Service high nutrient density diets 398 or 406 for 14 weeks. Growth of fry fed BioDiet for 2, 3, 4, or 6 weeks from first feeding...
Breakthrough
G.S. Gutsell
1983, Trout Growers Creel (16) 14-15
Simulation of solute transport in a mountain pool-and-riffle stream with a kinetic mass transfer model for sorption
Kenneth E. Bencala
1983, Water Resources Research (19) 732-738
In natural channels there are often long periods of low flow during which solutes have repeated opportunity for contact with relatively immobile bed materials. Such conditions can exist in very small pool-and-riffle mountain streams. If a solute can sorb onto bed materials, then both hydrodynamic and chemical processes control solute...
High paleointensities of the geomagnetic field from thermomagnetic studies on rift valley pillow basalts from the Mid- Atlantic Ridge
M. Prevot, E. A. Mankinen, S. Gromme, A. Lecaille
1983, Journal of Geophysical Research Solid Earth (88) 2316-2326
Nineteen pillow basalts dredged within the rift valley of the Mid-Atlantic Ridge at36.8°N were studied by the Thellier stepwise heating method in order to determine the paleointensity of the geomagnetic field when they erupted on to the sea floor. Previously reported fission track ages are...
Serological comparison of selected isolates of Aeromonas salmonicida ssp. Salmonicida
G.B. Hahnel, R. W. Gould, E.S. Boatman
1983, Journal of Fish Diseases (6) 1-11
Eight isolates of Acronionus salmonicida ssp. salmonicida were collected during furunculosis epizootics in North American Pacific coast states and provinces. Both virulent and avirulent forms of each isolate, confirmed by challenge and electron microscopy, were examined. Serological comparisons by cross-absorption agglutination tests revealed no serological differences between isolates. Using...
Radiometric dating and the age of the earth: A reply to scientific creationism
G. B. Dalrymple
1983, Federation Proceedings (42) 3033-3038
[No abstract available]...
A review of distributed parameter groundwater management modeling methods
Steven M. Gorelick
1983, Water Resources Research (19) 305-319
Models which solve the governing groundwater flow or solute transport equations in conjunction with optimization techniques, such as linear and quadratic programing, are powerful aquifer management tools. Groundwater management models fall in two general categories: hydraulics or policy evaluation and water allocation. Groundwater hydraulic management models enable the determination of...
Paleohydrological methods and some examples from Swedish fluvial environments I. Cobble and boulder deposits
G. P. Williams
1983, Geografiska Annaler, Series A (65 A) 227-243
This article establishes approximate empirical relations for determining the minimum unit stream power, bed shear stress and mean flow velocity capable of moving cobbles and boulders on streambeds. The derived equations then are used to estimate the minimum paleoflows that could have transported the boulders of two ancient...
CONTRIBUTION OF LAND USE DATA TO THE INVESTIGATION OF TRENDS IN FLOODING IN THE TUG FORK BASIN OF KENTUCKY, VIRGINIA, AND WEST VIRGINIA.
Sarah E. Bowers, Arthur G. Scott
1983, Conference Paper, Technical Papers of the American Congress of Surveying and Mapping
The U. S. Geological Survey, in cooperation with the U. S. Bureau of Mines and the Office of Surface Mining Reclamation and Enforcement, is investigating effects of mining on flood frequency and magnitude within the basin. Changing land use, particularly the acceleration of surface mining, may cause or contribute to...
Nontronite from a low-temperature hydrothermal system on the Juan de Fuca Ridge
R. Murnane, D.A. Clague
1983, Earth and Planetary Science Letters (65) 343-352
A deposit of Fe-rich, Al-poor, hydrothermal nontronite was recovered from the Juan de Fuca Ridge. Analyses show the deposit to be mineralogically and chemically similar to nontronite described at other oceanic localities. The deposit is located near the tip of a...
A strategy for mineral and energy resource independence
W. D. Carter
1983, Advances in Space Research (3) 223-236
Data acquired by Landsats 1, 2, and 3, are beginning to provide the information on which an improved mineral and energy resource exploration strategy can be based. Landsat 4 is expected to augment this capability with its higher resolution (30 m) and additional spectral bands in the Thematic Mapper (TM)...
Sequence of mineral assemblages in differentiated granitic pegmatites
J.J. Norton
1983, Economic Geology (78) 854-874
Revised sequence is (1) plagioclase, quartz, muscovite, (2) plagioclase, quartz, (3) quartz, perthite, plagioclase, (4) perthite, quartz, (5) quartz, plagioclase, perthite, spodumene (or petalite), amblygonite, (6) quartz, spodumene (or petalite), (7) quartz, microcline or perthite, (8) quartz, and (9) lepidolite or lithian mica, plagioclase, quartz, microcline....
Approximate sampling distribution of the serial correlation coefficient for small samples
Gary D. Tasker
1983, Water Resources Research (19) 579-582
The probability density function for the sample serial correlation coefficient r can be approximated byf(r) = (β(½, ½(T + 1)))−1(1 − r2)½(T− 1)(1+ c2 − 2cr)−½(T), whereβ is the Beta function, T= n− 2, c = ρ − [(1 + ρ)/(n − 3)], n is the number of observations, and ρ is the population lag one serial correlation. This distribution is derived from...
Fisheries news: NFC hosts Fish Health Workshop
G.S. Gutsell
1983, Fisheries (8) 39-39
No abstract available....
Distribution of corticolous noncrustose lichens on trunks of Rocky Mountain junipers in Boulder County, Colorado.
J. L. Peard
1983, Bryologist (86) 244-250
Nineteen species of noncrustose lichens were found on Juniperus scopulorum bark; 3 species had relatively high cover and frequency values and were characterized as typical lichens of Rocky Mountain junipers: Xanthoria fallax, Phaeophyscia hirsuta and Physcia caesia. Total cover per tree was low (4%) and most species preferred the N...
Light/dark control of diurnal acid metabolism in the submerged aquatic Isoetes howellii
Jon E. Keeley
1983, Bulletin of the Southern California Academy of Sciences (82) 39-42
River discharge controls phytoplankton dynamics in the northern San Francisco Bay estuary
J. E. Cloern, A.E. Alpine, B.E. Cole, R.L.J. Wong, J.F. Arthur, M.D. Ball
1983, Estuarine, Coastal and Shelf Science (16) 415-429
Phytoplankton dynamics in the upper reach of the northern San Francisco Bay estuary are usually characterized by low biomass dominated by microflagellates or freshwater diatoms in winter, and high biomass dominated by neritic diatoms in summer. During two successive years of very low river discharge (the drought of 1976-77), the...
What's New : Fisheries information available
G.S. Gutsell
1983, Farm Pond Harvest (17) 22
Mine drainage and rock type influences on eastern Ohio stream water quality
D.R. Helsel
1983, Water Resources Bulletin (19) 881-887
Stream water during fair weather (base flow) is largely ground water discharge, which has been in contact with minerals of the underlying aquifer. Base flow water quality should therefore reflect aquifer mineralogy as well as upstream land use. Three upstream mining categories (unmined lands, abandoned coal mines, and reclaimed coal...
Development of reaction models for ground-water systems
Niel Plummer, D.L. Parkhurst, D.C. Thorstenson
1983, Geochimica et Cosmochimica Acta (47) 665-685
Methods are described for developing geochemical reaction models from the observed chemical compositions of ground water along a hydrologic flow path. The roles of thermodynamic speciation programs, mass balance calculations, and reaction-path simulations in developing and testing reaction models are contrasted. Electron transfer is included in the mass balance equations...
The reaction of bighorn sheep to human disturbance in the San Gabriel Mountains, California
K.M. Hamilton, S. Holl, C. L. Douglas
1983, Desert Bighorn Council Transactions (27) 50-55
Clutch and egg size in the New Guinea chelid turtle Emydura subglobosa
J.E. Lovich, S.W. Gotte, C.H. Ernst
1983, Herpetofauna (14) 95
An annotated check list of the amphibians and reptiles of California
M.R. Jennings
1983, California Fish and Game (69) 151-171
Calculation of amorphous silica solubilities at 25° to 300°C and apparent cation hydration numbers in aqueous salt solutions using the concept of effective density of water
Robert O. Fournier, Marshall L. Williams
1983, Geochimica et Cosmochimica Acta (47) 587-596
The solubility of amorphous silica in aqueous salt solutions at 25° to 300°C can be calculated using information on its solubility in pure water and a model in which the activity of water in the salt solution is defined to equal the effective density. pe, of “free” water in that solution....
Thymocyte plasma membrane of the rainbow trout, Salmo gairdneri: Associated immunoglobulin and heteroantigens
G.W. Warr, D. DeLuca, D. P. Anderson
1983, Comparative Biochemistry and Physiology, Part B: Comparative Biochemistry (76) 515-521
1. Thymic lymphocytes of the rainbow trout, S. gairdneri were disrupted and a plasma membrane containing fraction isolated by differential and buoyant density centrifugation.2. Radioiodine introduced into the membrane by the lactoperoxidase catalyzed reaction and immunoglobulin (identified by radioimmunoassay with monoclonal antibody) both copurified in the plasma membrane fraction.3. Rabbit...
