Development and survival of embryos of lake herring at different constant oxygen concentrations and temperatures
L.T. Brooke, P.J. Colby
1980, Progressive Fish-Culturist (42) 3-9
Eggs of lake herring (Coregonus artedii) were incubated in a continuous-flow system at four constant water temperatures (2-8°C) and five dissolved oxygen (DO) concentrations (1-12 mg/L). In comparison with incubation time at 12 mg/L DO, time to median hatch was significantly longer (P<0.05) at 2 mg/L at 6°C (no hatch...
Hydrogeologic data for Eureka Springs landfill and adjacent area, north-central Hillsborough County, Florida, 1969-73
A. D. Duerr, Joseph William Stewart
1980, Open-File Report 80-70
Well location and construction data are summarized for 218 wells in the Eureka Springs landfill and adjacent areas in north-central Hillsborough County, FL. Most of the data are for 88 wells within the immediate vicinity of the landfill. Water-quality data are presented for 93 of the wells and 13 surface-water...
The earthquake educational institute at San Francisco State University
R. Sullivan, R. Pestrong, H. Strongin
1980, Earthquake Information Bulletin (USGS) (12) 174-176
The Earthquake Educational Institute was established in 1978 at San Francisco State University under a grant from the U.S National Science Foundation. The goal of the Institute is to develop earthquake-related curricula for use in elementary and secondary schools in the hope that, by educating students about earthquakes, they will...
Continuous monitoring of Mount St. Helens Volcano
H. Spall
1980, Earthquake Information Bulletin (USGS) (12) 220-227
Day by day monitoring of the Mount St. Helens Volcano. These are four scenarios, very different scenarios, that can occur in a average week at Mount St. Helens. Ranging from eruptions of gas and to steam to eruptions of ash and pyroclastic flows to even calm days. This example of...
Coal resource occurrence and coal development potential maps of the Box Elder Draw quadrangle, Sheridan County, Wyoming, and Big Horn and Powder River Counties, Montana
IntraSearch Inc.
1980, Open-File Report 79-162
No abstract available....
Aeromagnetic map of the Little Dog-Pup Canyon area, New Mexico
Water Resources Division, U.S. Geological Survey
1980, Open-File Report 80-997
No abstract available....
Coal resource occurrence and coal development potential maps of the Cabin Creek NW quadrangle, Sheridan County, Wyoming, and Powder River County, Montana
IntraSearch Inc.
1980, Open-File Report 79-163
No abstract available....
Visitor use patterns in Yosemite National Park
J. W. van Wagtendonk
1980, Journal of Travel Research (19) 12-17
After several years of dramatic increases, visitor use in Yosemite National Park has leveled off to an average of 2.4 million visits per year. Coincident with this decline in the growth rate, there have been some changes in visitation trends and patterns. Data collected in the park show that the...
The comparison of usage and availability measurements for evaluating resource preference
Douglas H. Johnson
1980, Ecology (61) 65-71
Modern ecological research often involves the comparison of the usage of habitat types or food items to the availability of those resources to the animal. Widely used methods of determining preference from measurements of usage and availability depend critically on the array of components that the researcher, often with a...
Breeding biology of eastern phoebes in northern Wisconsin
C. A. Faanes
1980, The Wilson Bulletin (92) 107-110
Abstract has not been submitted...
Water quality of Tampa Bay, Florida, June 1972 - May 1976
Carole L. Goetz, Carl R. Goodwin
1980, Water-Resources Investigations Report 80-12
A comprehensive assessment of the water quality of Tampa Bay, Florida, was initiated in 1970 to provide background information to evaluate the effects of widening and deepening the ship channel to the port of Tampa. This report provides results of water-quality sampling in the bay from 1972 to 1976, prior...
Comments on: "Solubility of noble gases in serpentine: Implications for meteoritic noble gas abundances" by A. Zaikowski and O.A.Schaeffer
O.K. Manuel, D.D. Sabu
1980, Earth and Planetary Science Letters (51) 233-234
[No abstract available]...
The behavior of 14C and 13C in estuarine water: Effects of In situ CO2 production and atmospheric exchange
Elliott C. Spiker
1980, Radiocarbon (22) 647-654
The effects of nonconservative sources (inputs) and sinks (outputs) of carbon are indicated by the behavior of Δ14C and δ13C of the total dissolved inorganic carbon (ΣCO2) in San Francisco Bay and Chesapeake Bay. Isotopic distributions and model calculations indicate that in North San Francisco Bay the net CO2 flux to...
Map showing water circulation and rates of sedimentation in the Port Isabel 1 degree by 2 degrees quadrangle, Texas
H. L. Berryhill Jr., A. R. Trippet
1980, IMAP 1254-A
No abstract available....
Extraction spectrophotometric determination of niobium in rocks with sulfochlorophenol S
A. E. Childress, L. P. Greenland
1980, Analytica Chimica Acta (116) 185-190
After acid decomposition and potassium pyrosulfate fusion, niobium (1—26 ppm) is separated from interfering elements by extraction into methyl isobutyl ketone from 6 M H2SO4—2 M HF and back-extracted into water. The niobium—sulfochloro-phenol S complex is extracted into amyl alcohol....
Resolving the percentage of component terrains within single resolution elements
S.E. Marsh, P. Switzer, William S. Kowalik
1980, Photogrammetric Engineering and Remote Sensing (46) 1079-1086
An approximate maximum likelihood technique employing a widely available (BMD) discriminant analysis program has been developed for resolving the percentage of component terrains within single resolution elements. The method employs all four channels of Landsat data simultaneously and does not require prior knowledge of the percentage of components in mixed...
Reply. Eocene conglomerate sedimentology and basin analysis, San Diego and the southern California borderland.
D. G. Howell
1980, Journal of Sedimentary Petrology (50) 655-656
No abstract available....
Structural characteristics of fulvic acids from Continental Shelf sediments
Patrick G. Hatcher, Irving A. Breger, M.A. Mattingly
1980, Nature (285) 560-562
Fulvic acids are those components of soil organic matter that remain soluble after a dilute alkaline extract of the soil is acidified to pH 2 (refs 1, 2). This extraction procedure has been applied to marine sediments, and the organic compounds so recovered have been called marine sedimentary fulvic acids....
Type C botulism losses at Horicon National Wildlife Refuge, 1978
R. M. Windingstad, R. M. Duncan, R.L. Drieslein
1980, Transactions of the Wisconsin Academy of Sciences, Arts, and Letters (68) 208-211
Avian botulism was responsible for the death of over 6,000 waterfowl at Horicon National Wildlife Refuge in Wisconsin in 1978. The outbreak occurred in early fall on a flooded 250 hectare fallow agricultural area on the northeast end of the refuge. The species most severely affected was the green-winged teal...
Development of sea lamprey (Petromyzon marinus) larvicides
John H. Howell, John J. Lech, John L. Allen
1980, Canadian Journal of Fisheries and Aquatic Sciences (37) 2103-2107
Larvicides are used to control sea lamprey (Petromyzon marinus) in the Great Lakes. These larvicides are useful because they are more toxic to sea lamprey than fish species found in the same habitat. The lampricides come from two classes of chemical compounds: (1) halonitrophenols, and (2) halonitrosalicylanilides. Selectivity of the...
Role of physical barriers in the control of sea lamprey (Petromyzon marinus)
J. B. Hunn, W.D. Youngs
1980, Canadian Journal of Fisheries and Aquatic Sciences (37) 2118-2122
Mechanical and electromechanical barriers played a significant role in the initial attempts to control sea lamprey (Petromyzon marinus) populations in the upper Great Lakes. More recently electromechanical weirs have been used to assess the relative abundance of spawning-run sea lampreys in Lake Superior. Development of an integrated control approach to...
Effects of sea lamprey (Petromyzon marinus) control in the Great Lakes on aquatic plants, invertebrates and amphibians
P.A. Gilderhus, B. G. H. Johnson
1980, Canadian Journal of Fisheries and Aquatic Sciences (37) 1895-1905
The chemicals 3-trifluoromethyl-4-nitrophenol (TFM) or a combination of TFM and 2a??,5-dichloro-4a??-nitrosalicylanilide (Bayer 73) have been used to control the sea lamprey (Petromyzon marinus) in the Great Lakes for about 20 yr. These chemicals cause some mortalities of Oligochaeta and Hirudinea, immature forms of Ephemeroptera (Hexagenia sp.), and certain Trichoptera, Simuliidae,...
Evidence for live 247Cm in the early solar system
M. Tatsumoto, T. Shimamura
1980, Nature (286) 118-122
Variations of the 238U/235U ratio in the Allende meteorite, ranging from -35% to + 19%, are interpreted as evidence of live 247Cm in the early Solar System. The amounts of these and other r-products in the Solar System indicate values of (9,000??3,000) Myr for the age of the Galaxy and...
Reproductive success and nest attentiveness of mallard ducks fed Aroclor 1254
T. W. Custer, G. H. Heinz
1980, Environmental Pollution Series A: Ecological and Biological (21) 313-318
A dietary dosage of 25 ppm Aroclor 1254 fed to nine-month-old mallards Anas platyrhynchos for at least a month before egg-laying had no detrimental effect on reproductive success or nest attentiveness when hens were allowed to incubate their own eggs. The treatment caused no effect on number of hens laying, date of...
Circular current loops, magnetic dipoles and spherical harmonic analysis.
L.R. Alldredge
1980, Journal of Geomagnetism & Geoelectricity (32) 357-364
Spherical harmonic analysis (SHA) is the most used method of describing the Earth's magnetic field, even though spherical harmonic coefficients (SHC) almost completely defy interpretation in terms of real sources. Some moderately successful efforts have been made to represent the field in terms of dipoles placed in the core in...
