Tectonomagnetic effects
M. Johnston
1978, Earthquake Information Bulletin (USGS) (10) 82-87
Measurements of the actual stress within the Earth and its changes with time are very difficult. It is much easier to monitor the direct effects of this stress, such as ground strain, or the indirect effects, such as changes in resistivity, strain, changes in seismic velocity or changes in magnetic...
Selected uranium and uranium-thorium occurrences in New Hampshire
Wallace A. Bothner
1978, Open-File Report 78-482
Secondary uranium mineralization occurs in a northwest-trending fracture zone in the Devonian Concord Granite in recent rock cuts along Interstate Highway 89 near New London, New Hampshire. A detailed plane table map of this occurrence was prepared. Traverses using total gamma ray scintillometers throughout the pluton of Concord Granite identified...
Aspects of raccoon (Procyon lotor) social organization
E.K. Fritzell
1978, Canadian Journal of Zoology (56) 260-271
Spatial and temporal relationships among members of a raccoon (Procyon lotor) population were studied during spring and summer in east-central North Dakota during 1973–1975. Radio telemetry was used to locate 48 raccoons 6443 times. Livetrapping results and other observations suggested that most raccoons in the area were radio equipped; densities...
Habitat use by prairie raccoons during the waterfowl breeding season
E.K. Fritzell
1978, Journal of Wildlife Management (42) 118-127
Mobility and habitat use of raccoons (Procyon lotor) in an intensively farmed area of the prairie pothole region were studied during the waterfowl breeding seasons (April-July) of 1973-75. Over 5700 locations of 30 raccoons were analyzed. Movement patterns varied with sex, age, and reproductive status. Adult males moved regularly throughout...
Biochemical identification of mallard-black duck hybrids through a breeding program and in nature
R.P. Morgan II, D. W. Meritt, S. B. Block, M. Cole
1978, Transactions of the Northeast Section of the Wildlife Society, Annual Fish and Wildlife Conference (35) 225-236
From 1974 to 1976, a breeding program was used to produce black duck-mallard hybrids for the evaluation of inheritance patterns of serum proteins and esterases. In addition to the initial crosses, a series of matings in 1975 and 1976 were designed to evaluate inheritance patterns in hybrid matings with either...
Determination of dissolved boron in fresh, estuarine, and geothermal waters by d.c. argon-plasma emission spectrometry
J.W. Ball, J. M. Thompson, Everett A. Jenne
1978, Analytica Chimica Acta (98) 67-75
A d.c. argon-plasma emission spectrometer is used to determine dissolved boron in natural (fresh and estuarine) water samples. Concentrations ranged from 0.02 to 250 mg l-1. The emission—concentration function is linear from 0.02 to 1000 mg l-1. Achievement of a relative standard deviation of ⩽ 3% requires frequent restandardization to...
Geologic interpretation of aeromagnetic maps of the coastal plain region of South Carolina and parts of North Carolina and Georgia
David L. Daniels, Isidore Zietz
1978, Open-File Report 78-261
No abstract available....
Sea-level changes before large earthquakes
M. Wyss
1978, Earthquake Information Bulletin (USGS) (10) 165-168
Changes in sea level have long been used as a measure of local uplift and subsidence associated with large earthquakes. For instance, in 1835, the British naturalist Charles Darwin observed that sea level dropped by 2.7 meters during the large earthquake in Concepcion, CHile. From this piece of evidence and...
Survival of the salmonid viruses infectious hematopoietic necrosis (IHNV) and infectious pancreatic necrosis (IPNV) in ozonated, chlorinated, and Untreated waters
Gary A. Wedemeyer, Nancy C. Nelson, Cathy A. Smith
1978, Journal of the Fisheries Research Board of Canada (35) 875-879
Ozone and chlorine inactivation curves were determined in three water types at 10 °C for the fish pathogenic viruses infectious hematopoietic necrosis (IHNV) and infectious pancreatic necrosis (IPNV). In phosphate-buffered, distilled water (PBDW) an ozone dose of 0.01 mg/L for 30 or 60 s inactivated IHNV or IPNV, respectively, suspended at a...
Prevention and treatment of Nitrite toxicity in juvenile steelhead trout (Salmo gairdneri)
Gary A. Wedemeyer, W. T. Yasutake
1978, Journal of the Fisheries Research Board of Canada (35) 822-827
The efficacy of mineral salts, pH, and tetramethylthianine (methylene blue) treatment in reducing the acute toxicity of nitrite to fingerling steelhead trout (Salmo gairdneri) was determined using a static bioassay system at 10 °C. The acute toxicity (96-h LC50) was reduced by a factor of about 24 for 5-g steelhead...
Effect of capture stress on plasma enzyme activities in rainbow trout (Salmo gairdneri)
G.R. Bouck, M. A. Cairns, A. R. Christian
1978, Journal of the Fisheries Research Board of Canada 1485-1488
Four capture methods were used to collect domesticated rainbow trout (Salmo gairdneri): angling, electroshocking, seining, and direct netting (control). Blood was sampled rapidly upon capture, usually within 2 min. No significant differences were noted within the time frame of the experiment between the four capture groups for plasma protein concentration, lactate...
How often will earthquakes recur on the San Andreas Fault?
R. E. Wallace
1978, Earthquake Information Bulletin (USGS) (10) 76-81
The relationship between magnitude and abundance of earthquakes, called a recurrence curve, has been derived for many regions of the world from seismographic records. AS an example, Clarence Allen and his associates at the California Institute of Technology have obtained recurrence rates for the southern California region by incorporating data...
Searching for seismic precursors to earthquakes in central California
R. L. Wesson
1978, Earthquake Information Bulletin (USGS) (10) 51-54
Preservation of cycad and Ginkgo pollen
N. O. Frederiksen
1978, Review of Palaeobotany and Palynology (25) 163-179
Pollen grains of Ginkgo, Cycas, and Encephalartos were chemically treated together with pollen of Quercus, Alnus, and Pinus, the latter three genera being used as standards. The experiments showed that: (1) boiling the pollen for 8-10 hours in 10% KOH had little if any effect on any of the grains;...
An automated procedure for the simultaneous determination of specific conductance and pH in natural water samples
D. E. Eradmann, Howard E. Taylor
1978, Analytica Chimica Acta (99) 269-274
An automated, continuous-flow system is utilized to determine specific conductance and pH simultaneously in natural waters. A direct electrometric procedure is used to determine values in the range pH 4–9. The specific conductance measurements are made with an electronically modified, commercially available conductivity meter interfaced to a separate module containing...
Seasonal trends in summer diet of the lapland longspur near Barrow Alaska USA
T. W. Custer, F.A. Pitelka
1978, The Condor (80) 295-301
Contents of lapland longspur [Calcarius lapponicus] stomachs and esophagi were sampled near Barrow, Alaska [USA], from May-Aug. in 1969, 1971, 1972 and 1973. Data from stomach contents were corrected for differential digestion of prey items. Longspurs shifted seasonally from larval to adult arthropods and back to larvae, responding to changes...
Uptake, distribution, and elimination of the lampricide 2',5-dichloro-4'-nitro[14C] salicylanilide (Bayer 2353) and its 2-aminoethanol salt (Bayer 73) by largemouth bass
D.P. Schultz, P.D. Harman
1978, Journal of Agricultural and Food Chemistry (26) 1226-1230
No abstract available....
Feeding habitat use by colonially-breeding herons, egrets, and ibises in North Carolina
Thomas W. Custer, Ronald G. Osborn
1978, The Auk (95) 733-743
Nine species of herons, egrets, and ibises were followed by airplane from a nesting colony near Beaufort, North Carolina to their feeding sites. Except for Cattle Egrets, which flew exclusively to fields and dumps, the birds flew mainly to saltmarsh habitat. The selection of feeding habitats by Great Egrets and...
Evaluating call-count procedures for measuring local mourning dove populations
M.J. Armbruster, T.S. Baskett, W.R. Goforth, K.C. Sadler
1978, Transactions of the Missouri Academy of Science (12) 75-90
Seventy-nine mourning dove call-count runs were made on a 32-km route in Osage County, Missouri, May 1-August 31, 1971 and 1972. Circular study areas, each 61 ha, surrounding stop numbers 4 and 5, were delineated for intensive nest searches and population estimates. Tallies of cooing male doves along the entire...
Changes in submerged aquatic macrophyte populations at the head of Chesapeake Bay, 1958-1975
S. Bayley, Vernon D. Stotts, P. F. Springer, J. Steenis
1978, Estuaries (1) 171-182
Submerged aquatic plant populations in the Susquehanna Flats of the Chesapeake Bay were followed for 18 years. An exotic species, eurasian water milfoil, Myriophyllum spicatum, increased dramatically from 1958 to 1962; at the same time the dominant native species declined. After 1962, milfoil populations declined and the native rooted aquatics...
Water-level changes and earthquake prediction
H. Spall
1978, Earthquake Information Bulletin (USGS) (10) 55-59
Heritability of tolerance for infectious hematopoietic necrosis in sockeye salmon (Oncorhynchus nerka)
John D. McIntyre, Donald F. Amend
1978, Transactions of the American Fisheries Society (107) 305-308
A hierarchical breeding design was used to demonstrate the heritability of tolerance for infectious hematopoietic necrosis (IHN) in sockeye salmon. Oncorhynchus nerka. Heritability was about 30%, indicating that artificial selection may increase the number of fish that can tolerate the disease....
Earthquakes; May-June, 1978
W. J. Person
1978, Earthquake Information Bulletin (USGS) (10) 234-235
Map showing appraisal of oil and gas resource potential of RARE II proposed roadless areas in national forests of Colorado
Charles W. Spencer, Gordon Dolton
1978, Open-File Report 78-955
No abstract available....
Biology of larval and metamorphosing sea lampreys, Petromyzon marinus, of the 1960 year class in the Big Garlic River, Michigan, Part II, 1966-72
Patrick J. Manion, Bernard R. Smith
1978, Technical Report 30
The 1960 year class of sea lampreys, Petromyzon marinus, isolated in a tributary of southern Lake Superior continued to yield information on the early life history of the sea lamprey. The larval population persisted and newly metamorphosed individuals were captured from 1966 until the study was terminated in 1972. The...
