Map showing areas serviced by public water-supply agencies in 1973 greater Pittsburgh region, southwestern Pennsylvania
Robert M. Beall
1974, Miscellaneous Field Studies Map 607
Urban water planning, development, and management are many sectored, costly efforts, subject to a multitude of controls and demands including those imposed by nature. One primary concern in development is for providing a dependable and safe water supply. In spite of a bountiful natural availability, the process of satisfying consumer...
Movement of elements into the atmosphere from coniferous trees in subalpine forests of Colorado and Idaho
G.C. Curtin, H. D. King, E. L. Mosier
1974, Journal of Geochemical Exploration (3) 245-263
Exudates from conifer trees, presumably consisting largely of volatile materials, were sampled at 19 subalpine localitites in Colorado and Idaho where anomalous amounts of several metals were determined in vegetation and mull during previous geochemical testing. The trees sampled were lodgepole pine...
Geological survey research 1974
Water Resources Division, U.S. Geological Survey
1974, Professional Paper 900
No abstract available....
Land use map for Tucson quadrangle Arizona, and complementary tables for census tracts, drainage basins, land ownership, land use, and soils
Robin Fegeas
1974, Open-File Report 74-89
No abstract available....
Feeding ecology of pintail hens during reproduction
Gary L. Krapu
1974, The Auk (91) 278-290
Food supply has been acknowledged as one of eight major external factors regulating the sexual cycles of birds (Marshall 1961). Several hypotheses have been advanced to explain the role of food supply as an ultimate factor regulating breeding (Marshall 1951; Lack 1954, 1968; Wynne-Edwards 1962; and others). Another potential influence...
Homing to nest baskets by wild female mallards
Harold A. Doty, F.B. Lee
1974, Journal of Wildlife Management (38) 714-719
A high rate of homing to nest baskets by adult female mallards (Anas platyrhynchos) was observed in prairie potholes of North Dakota. One hundred and thirteen female mallards were caught on nest baskets, banded, and marked with nasal saddles. Forty-six percent homed at least once to nest baskets in the...
Habitat management considerations for prairie chickens
L.M. Kirsch
1974, Wildlife Society Bulletin (2) 124-129
Lack of nesting and brood rearing habitat appears to be the universal limiting factor for prairie chickens (Tympanuchus cupido pinnatus) throughout their range. Grasslands are essential to prairie chickens, but vary widely in quality and thus in their ability to support prairie chickens. High-quality habitat is grassland providing residual vegetation...
Earthquake history of Nebraska
C. A. von Hake
1974, Earthquake Information Bulletin (USGS) (6) 32-33
Nebraska is in a region of moderate seismicity occasionally punctuated by rather strong earthquakes. Most of the State is seismic risk zone 1, with a small part in the southeast corner in risk zone 2. the first significant earthquake felt in Nebraska occurred in 1867, the year that statehood was...
Earthquake history of Nevada
C. A. von Hake
1974, Earthquake Information Bulletin (USGS) (6) 26-29
Since 1852, more than 30 shocks of intensity VI or greater (Modified Mercalli scale) have occurred in western Nevada. At least three of these were classified as intensity X. In addition, seven earthquakes (intensity VI or greater) were centered in the eastern part of the State. Almost 2,000 other shocks...
Comparative toxicity of two Iodophors to rainbow trout eggs
Donald F. Amend
1974, Transactions of the American Fisheries Society (103) 73-78
Toxicity of Wescodyne(R) and Betadine(R) to eyed eggs was not adversely affected by water hardness (as calcium and magnesium) or by exposure periods up to 60 min. Both iodophors were much more toxic below pH 6.0 than at pH 8.0. In general Wescodyne was slightly more toxic than Betadine. Significant egg loss...
New seismic study begins in Puerto Rico
Arthur C. Tarr
1974, Earthquake Information Bulletin (USGS) (6) 23-26
A new seismological project is now underway in Puerto Rico to provide information needed for accurate assessment of the island's seismic hazard. The project should also help to increase understanding of the tectonics and geologic evolution of the Caribbean region. The Puerto Rico Seismic Program is being conducted by the...
Various fish species as biological control agents for the dark rice field mosquito in Arkansas rice fields
R. B. Davey, M. V. Meisch, D. L. Gray, J. M. Martin, Kermit E. Sneed, F. J. Williams
1974, Environmental Entomology (3) 823-826
During the summers of 1972–73, 10 fish species were evaluated as predators against larvae of the dark rice field mosquito, Psorophora confinnis (Lynch-Arribalzaga), near Stuttgart, Ark. Stocking rates were 0.02, 0.03, and 0.06 fish/ft 2 . At the lowest stocking rate green sunfish, Lepomis cyanellus Rafinesque, reduced larval numbers by 89.7% and were significantly more effective...
Fish Immunology, Chapter 4: Techniques used in immunology of fishes
D. P. Anderson
1974, Book chapter, Disease of Fishes
No abstract available ...
Some helminth parasites of the American bald eagle
A.A. Kocan, L. N. Locke
1974, Journal of Wildlife Diseases (10) 8-10
Bald eagles (Haliaeetus leucocephalus) found dead or moribund in the United States and Canada and submitted to Patuxent Wildlife Research Center were examined for helminth parasites. Nine genera of helminths were reported which include new host records for Clinostomum complanatum, Neogogatea pandionis, Centrorhynchus sp., Serratospiculum amaculata, Capillaria contorta, and Habronema americanum....
Earthquakes, November-December 1973
W. J. Person
1974, Earthquake Information Bulletin (USGS) (6) 26-27
A number of significant earthquakes happened during the last 2 months of 1973. Two major earthquakes (magnitude 7.0-7.9) occurred in the New Hebrides Islands, bringing the final major earthquake total for the year to 11, somewhat below the annual average which is 18. One great earthquake (magntidue 8.0 and above)...
Teleseismic studies indicate existence of deep magma chamber below Yellowstone National Park
H. M. Iyer
1974, Earthquake Information Bulletin (USGS) (6) 3-7
The secrets of Yellowstone National Park's spectacular geysers and other hot water and steam phenomena are being explored by the U.S Geological Survey with the aid of distant earthquakes (teleseisms). For some time geologists have known that the remarkable array of steam and hot water displays, for which the park...
Earthquakes, January-February 1974
W. J. Person
1974, Earthquake Information Bulletin (USGS) (6) 18-19
During the first 2 months of 1974, earthquakes caused fatalities in Peru and Turkey. The largest earthquake during the period was a magnitude 7.2 shock in the New Hebrides Islands. A local tsunami was generated by a magnitude 7.0 earthquake in the Solomon Islands. The relative quiet that characterized world...
Hydrologic data for Pin Oak Creek, Trinity River Basin, Texas, 1972
B.B. Hampton
1974, Report
The U.S. Soil Conservation Service is actively engaged in the installation of flood- and soil-erosion reducing measures in Texas under the authority of "The Flood Control Act of 1936 and 1944" and "Watershed Protection and Flood Prevention Act" (Public Law 566), as amended. The Soil Conservation Service has found a...
Hydrologic data for Little Elm Creek, Trinity River Basin, Texas, 1972
B.B. Hampton
1974, Report
The U.S. Soil Conservation Service is actively engaged in the installation of flood- and soil-erosion reducing measures in Texas under the authority of "The Flood Control Act of 1936 and 1944" and "Watershed Protection and Flood Prevention Act" (Public Law 566), as amended. The Soil Conservation Service has found a...
Bibliography of research publications of the U.S. Bureau of Sport Fisheries and Wildlife, 1928-72
Paul H. Eschmeyer, Van T. Harris
1974, Book
No abstract available....
An antigenic comparison between infectious hematopoietic necrosis virus (OSV strain) and the virus of haemorrhagic septicaemia of rainbow trout (Salmo gairdneri) (Denmark strain) by cross neutralization
P. E. McAllister, J. L. Fryer, K.S. Pilcher
1974, Journal of Wildlife Diseases (10) 101-103
The infectious hematopoietic necrosis virus (OSV strain) and the virus of haemorrhagic septicaemia of rainbow trout (Salmo gairdneri) (Denmark strain) were examined for possible antigenic relationship by plaque neutralization using homologous and heterologous antisera. No neutralization of either virus was observed on exposure to heterologous antiserum. This indicates that there...
Argillization by descending acid at Steamboat Springs, Nevada
Robert Schoen, Donald E. White, J.J. Hemley
1974, Clays and Clay Minerals (22) 1-22
Steamboat Springs, Nevada, an area of present-day hot springs, clearly illustrates the genetic dependence of some kaolin deposits on hot-spring activity. Andesite, granodiorite and arkosic sediments are locally altered at the land surface to siliceous residues consisting of primary quartz and anatase, plus opal from primary silicates. These siliceous residues...
Interlamellar adsorption of carbon dioxide by smectites
J.J. Fripiat, M.I. Cruz, B.F. Bohor, J. Thomas Jr.
1974, Clays and Clay Minerals (22) 23-30
The adsorption of CO2 at low temperature (∼ −70°C) on thin films of homoionic smectites was studied by X-ray diffraction and by i.r. absorption. An increase in the d001 spacings of these clay films upon adsorption of CO2 was observed. In addition, a dichroic effect was readily discernible by comparing the i.r. spectra at...
Nematode parasites of waterfowl (Anseriformes) from western United States
M.E. McDonald
1974, Wildlife Disease 19-19
Thirty-four species of nematodes were found in 415 Anseriformes (Anatidae) of 27 species; 93.7% of birds over 4 weeks old were infected. Data on prevalence, host specificity, age of host, and geographic distribution are given. Infections were more intense in sick birds and birds in poor physical condition. Accidental or...
Geologic map of the United States (exclusive of Alaska and Hawaii)
Philip Burke King, Helen M. Beikman, Gertrude J. Edmonston
1974, Report
No abstract available....
