Salmonid whirling disease: Myxosporean and actinosporean stages cross-react in direct fluorescent antibody test
M.E. Markiw
1989, Journal of Fish Diseases (12) 137-141
Serologic relatedness of the two life stages of the salmonid whirling disease parasite Myxosoma cerebralis Hofer, 1903 — myxosporean spores from fish cartilage and actinosporean triactinomyxon spores from aquatic tubificids — were investigated. When the direct fluorescent antibody technique was used, anti-triactinomyxon and anti-M. cerebralis rabbit sera conjugated...
Tolerance of lake trout, Salvelinus namaycush (Walbaum), sac fry to dissolved gas supersaturation
W. F. Krise, R. L. Herman
1989, Journal of Fish Diseases (12) 269-273
The tolerance of sac fry of lake trout, Salvelinus namaycush (Walbaum), to the acute effects of gas supersaturation, from hatching to swim-up, was tested using six gas levels, ranging from ΔP 8 to 148. Although many fish were moribund by the time the yolk was nearly absorbed,...
Air permeability and trapped-air content in two soils
David A. Stonestrom, Jacob Rubin
1989, Water Resources Research (25) 1959-1969
To improve understanding of hysteretic air permeability relations, a need exists for data on the water content dependence of air permeability, matric pressure, and air trapping (especially for wetting-drying cycles). To obtain these data, a special instrument was designed. The instrument is a combination of a gas permeameter (for air...
Water content dependence of trapped air in two soils
David A. Stonestrom, Jacob Rubin
1989, Water Resources Research (25) 1947-1958
An improved air pycnometer method was used to examine the water content dependence of trapped-air volumes in two repacked, nonswelling soils. Trapped-air volumes were determined at a series of hydrostatic equilibrium stages which were attained during water pressure-controlled wetting and drying cycles over a range of 0 to −10 kPa...
Early Cretaceous vein-related garnet granulite in Fiordland, southwest New Zealand: a case for infiltration of mantle-derived CO2-rich fluids
J.Y. Bradshaw
1989, Journal of Geology (97) 697-717
Regionally extensive two-pyroxene granulite facies orthogneisses of Early Cretaceous age in Fiordland, southwest New Zealand, are criss-crossed by garnet-bearing feldspathic veins (and dikes) having associated marginal reaction zones of garnet granulite. The two-pyroxene granulites resulted from fluid-absent meta-morphism of a suite of...
Observed differences in Columbia and Delaware River American shad
D. V. Rottiers, H.E. Booke
1989, Research Information Bulletin 97
No abstract available at this time...
Production capacities for individual fish hatcheries can be determined using a bioassay
J. W. Meade
1989, Research Information Bulletin 89-81
No abstract available at this time...
Trout feed caused liver pathology when fed to striped bass
C. Lemm, J. Geiger, R. Herman
1989, Research Information Bulletin 79
No abstract available at this time...
Vegetation and floristics of Pinnacles National Monument
W. L. Halvorson, R.A. Clark
1989, Technical Report 34
No abstract available at this time...
[Book review] North American terrestrial vegetation, by Michael G. Barbour and William Dwight Billings
W. L. Halvorson
1989, Madroño (36) 260-261
Review of: North American Terrestrial Vegetation. Michael G. Barbour and William Dwight Billings. Cambridge University Press; 1st ed edition (March 25, 1988). 448 pages. ISBN: 978-0521261982....
Neuroendocrine mediation of photoperiod and other environmental influences on physiological responses in salmonids: a review
H. A. Poston
1989, Technical Paper 96
No abstract available at this time...
Population response to stress: Population Structure and movement of largemouth bass in a nuclear reactor cooling reservoir
W.M. Roosenburg, T.A. Tuel, J.R. Spotila, E.A. Standora, H.W. Avery, J. Aho
1989, Proceedings 61
No abstract available at this time...
Multiobjective sampling design for parameter estimation and model discrimination in groundwater solute transport
Debra S. Knopman, Clifford I. Voss
1989, Water Resources Research (25) 2245-2258
Sampling design for site characterization studies of solute transport in porous media is formulated as a multiobjective problem. Optimal design of a sampling network is a sequential process in which the next phase of sampling is designed on the basis of all available physical knowledge of the system. Three objectives...
Evaluating geographic information systems technology
Stephen C. Guptill
1989, Photogrammetric Engineering and Remote Sensing (55) 1583-1587
Computerized geographic information systems (GISs) are emerging as the spatial data handling tools of choice for solving complex geographical problems. However, few guidelines exist for assisting potential users in identifying suitable hardware and software. A process to be followed in evaluating the merits of GIS technology is presented. Related standards...
Geochemical controls on vanadium accumulation in fossil fuels
G. N. Breit, R. B. Wanty
1989, Conference Paper, Preprints Symposia
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...
The use of total lake-surface area as an indicator of climatic change: Examples from the Lahontan basin
L. V. Benson, Frederick L. Paillet
1989, Quaternary Research (32) 262-275
Variation in the size of lakes in the Lahontan basin is topographically constrained. River diversion also has played a major role in regulating lake size in Lahontan subbasins. The proper gage of lake response to change in the hydrologic balance is neither lake depth (level) nor lake volume but instead...
Retention and transport of nutrients in a third-order stream: Channel processes
Frank J. Triska, Vance C. Kennedy, Ronald J. Avanzino, Gary W. Zellweger, Kenneth E. Bencala
1989, Ecology (70) 1877-1892
Chloride was injected as a conservative tracer with nitrate to examine nitrate retention (storage plus biotic uptake) and transport in a 327—m reach of a third—order stream draining a forested basin in northwestern California. Prior to injections, diel patterns of nutrient concentrations were measured under background conditions. Nitrate concentration of...
The Relief Canyon gold deposit, Nevada: A mineralized solution breccia
A. R. Wallace
1989, Economic Geology (84) 279-290
The Relief Canyon gold deposit in the Humboldt Range of western Nevada is a low-grade, high-tonnage orebody of Tertiary or younger age. The host rocks include limestones of the Triassic Cane Spring Formation, which are overlain by shales of the Triassic Grass Valley Formation. The rocks were folded and metamorphosed...
Non-energy resources, Connecticut and Rhode Island coastal waters
N.F. Neff, R. S. Lewis
1989, Marine Geology (90) 125-130
Cores collected from Long Island Sound, Connecticut, were used to establish control on the geologic framework of the area. Lithologic and stratigraphic analyses verified the presence of the following units: (1) Cretaceous coastal plain, (2) Pleistocene glacial till, (3) late Pleistocene...
Upslope deposition of extremely distal turbidites: An example from the Tiburon Rise, west-central Atlantic
J. Dolan, C. Beck, Y. Ogawa
1989, Geology (17) 990-994
Terrigenous silt and sand turbidites recovered from the crest of the Tiburon Rise in the west-central Atlantic represent an unprecedented example of upslope turbidite deposition in an extremely distal setting. These Eocene-Oligocene beds, which were derived from South America more than 1000 km...
Coprecipitation and redox reactions of manganese oxides with copper and nickel
J.D. Hem, Carol J. Lind, C. E. Roberson
1989, Geochimica et Cosmochimica Acta (53) 2811-2822
Open-system, continuous-titration experiments have been done in which a slow flux of ∼0.02 molar solution of Mn2+ chloride, nitrate, or perchlorate with Cu2+ or Ni2+ in lesser concentrations was introduced into an aerated reactor solution held at constant temperature and at constant pH by a pH-stat...
Pleistocene Suvero slide, Paola basin, southern Italy
F. Trincardi, W. R. Normark
1989, Marine and Petroleum Geology (6) 324-335
The Suvero slide covers an area of about 225 km2 in the Paola slope basin on the Eastern Tyrrhenian margin. The shape and lateral extent of the deposit reflect topographic confinement of the slide between the continental slope and a morphologic barrier formed by a margin-parallel slope ridge. No headwall...
Present-day biogeochemical activities of anaerobic bacteria and their relevance to future exobiological investigations
R.S. Oremland
1989, Advances in Space Research (9) 127-136
If the primordial atmosphere was reducing, then the first microbial ecosystem was probably composed of anaerobic bacteria. However, despite the presence of an oxygen-rich atmosphere, anaerobic habitats are important, commonplace components of the Earth's present biosphere. The geochemical activities displayed by these anaerobes impact the global cycling of certain elements...
The structure of subtidal currents within and around Lydonia Canyon: Evidence for enhanced cross-shelf fluctuations over the mouth of the canyon
M. Noble, B. Butman
1989, Journal of Geophysical Research - Oceans (94) 8091-8110
Between October 1980 and April 1981, currents were measured within Lydonia Canyon and on the adjacent shelf and slope. The amplitude of the subtidal currents over the shelf and slope ranged between 10 and 30 cm s−1, but within the canyon, they were typically smaller than 5 cm s−1. The...
Origin and age of the Lake Nyos maar, Cameroon
J. P. Lockwood, M. Rubin
1989, Journal of Volcanology and Geothermal Research (39) 117-124
Lake Nyos occupies a young maar crater in the Precambrian granitic terrane of northwest Cameroon. The lake is partly surrounded by poorly consolidated, ultramafic nodule-bearing pyroclastic surge deposits that were explosively ejected from the Nyos crater at the time of its formation. Radiocarbon dates show that the maar probably formed...
