Status of the wolf in Michigan, 1973
J. Hendrickson, W. L. Robinson
1975, American Midland Naturalist (94) 226-232
Wolf (Canis lupus) numbers in Michigan's Upper Peninsula declined from an estimated 45-50 animals in the mid-1950s to near extinction in 1973, probably because of overharvesting through the bounty system. Sporadic breeding and occasional immigration of wolves from Ontario and Minnesota are postulated to be the factors tending to maintain...
Incidence of ingested lead shot in sora rails
J.W. Artmann, E.M. Martin
1975, Journal of Wildlife Management (39) 514-519
Gizzards of 934 sora rails (Porzana carolina) collected in Maryland (767) and Missouri (167) were examined for ingested shot. Ingested shot were found in 12.3 percent of the Maryland sample and 1.8 percent of the Missouri birds. Individual Maryland birds had ingested up to 28 pellets. None of the lead...
Evaluation of LANDSAT-2 (ERTS) images applied to geologic structures and mineral resources of South America: Type II progress report for period March 14, 1975-June 30, 1975
William D. Carter
1975, Report
The author has identified the following significant results. Work with the Image 100 clearly demonstrates that radiance values of LANDSAT data can be used for correlation of geologic formations across international boundaries. The Totora Formation of the Corocoro Group of Tertiary age was traced from known outcrops near Tiahuanaco, Bolivia,...
Palynological evidence for late Cretaceous, Paleocene, and early and middle Eocene ages for strata in the kaolin belt, central Georgia
Robert H. Tschudy, Sam H. Patterson
1975, Journal of Research of the U.S. Geological Survey (3) 437-445
Falynomorphs of Late Cretaceous (Maestrichtian), Paleocene, Paleocene or early Eocene (Wilcox), and middle Eocene (Claiborne) ages have been found in lignitic and carbonaceous clays and silts in the Tuscaloosa Formation, as used in central and east-central Georgia. The occurrence of palynomorphs of Maestrichtian (Navarro) age above thick kaolin deposits at...
Ordovician and middle Silurian rocks of the Wildhorse window, northeastern Pioneer Mountains, central Idaho
James H. Dover, Reuben James Ross Jr.
1975, Journal of Research of the U.S. Geological Survey (3) 431-436
Along Wildhorse Creek in the northeastern Pioneer Mountains, autochthonous Ordovician and Silurian rocks of an eastern carbonate assemblage are exposed in a structural window through allochthonous flysch deposits of the Mississippian Copper Basin Group. Graptolite-bearing Middle and Upper Ordovician dolomite and cherty dolomite 210 ft (64 m) thick are lithologically...
Age provinces in the basement rocks of Liberia
Carl E. Hedge, Richard F. Marvin, Charles W. Naeser
1975, Journal of Research of the U.S. Geological Survey (3) 425-429
Fourteen new Rb-Sr ages and 17 new K-Ar ages, when combined with published ages, confirm the previous subdivision of the basement rocks of Liberia into 3 age provinces. The Liberian age province was metamorphosed and intruded 2,700 m.y. ago, but the data suggest that many of the rocks of this...
Andesite sills in the Red Mountain area, Scapegoat Wilderness, Lewis and Clark County, Montana
Robert L. Earhart
1975, Journal of Research of the U.S. Geological Survey (3) 415-424
Sills 2-200 ft (0.6-60 in) thick in the Red Mountain area of the Scapegoat Wilderness in northwest Montana consist of altered andesite, basaltic andesite, and dacite and occur over a stratigraphic range of 8,000 ft (2,400 m) in the Helena and Snowslip Formations. The approximate compositional range of the sills...
The effect of a fuel oil spill on benthic invertebrates and water quality on the Alaskan arctic slope, Happy Valley Creek near Sagwon, Alaska
Jon W. Nauman, Donald R. Kernodle
1975, Journal of Research of the U.S. Geological Survey (3) 495-500
Samples of aquatic organisms and water were collected upstream and downstream from leaks and spills of arctic diesel fuel oil into Happy Valley Creek near Sagwon, Alaska. All groups of benthic invertebrates were reduced in abundance at the downstream boundary of the spill area, whereas invertebrates at an upstream site...
Leucocytozoonosis in Canada Geese at the Seney National Wildlife Refuge
C. M. Herman, J.H. Barrow Jr., I.B. Tarshis
1975, Journal of Wildlife Diseases (11) 404-411
A history is given of the Seney National Wildlife Refuge and the losses of goslings of Canada geese (Branta canadensis) recorded since inception of the refuge in 1935. Since 1960, when more reliable data became available, losses have been extensive every 4 years. Gosling deaths are attributed to the infection...
Requirement of Atlantic salmon for dietary phosphorus
H. G. Ketola
1975, Transactions of the American Fisheries Society (104) 548-551
Triplicate lots of young Atlantic salnon (Salmo salar) were fed a diet containing graded levels of supplemental inorganic phosphorus. The basal diet, containing mainly dehulled soybean meal and other plant materials, provided 40% crude protein, 0.7% phosphorus, 1.5% calcium, and 4,000 IU of supplemental cholecalciferol per kg of diet. Supplements...
Fertility of eggs produced on territories of vasectomized red-winged blackbirds
Olin E. Bray, James J. Kennelly, Joseph L. Guarino
1975, Wilson Bulletin (87) 187-195
Six male Red-winged Blackbirds scattered throughout 2 marshes were vasectomized in 1971, and their females began laying infertile clutches in 5 days. However, of 39 clutches on their territories, 27 (69%) were fertile. In 1972, 30, 50, and 100% of the males in 3 small isolated marshes were vasectomized, and...
Analysis of tissues of mallard ducks fed two phthalate esters
A. A. Belisle, W. L. Reichel, J. W. Spann
1975, Bulletin of Environmental Contamination and Toxicology (13) 129-132
No abstract available....
Effects of methylmercury on approach and avoidance behavior of mallard ducklings
G. H. Heinz
1975, Bulletin of Environmental Contamination and Toxicology (13) 554-564
Mallard ducks were fed a control diet or a diet containing 0.5 or 3 ppm mercury (as methylmercury dicyandiamide) based on the dry feed. These mercury diets are approximately equivalent to 0.1 and 0.6 ppm mercury in a natural succulent diet. I measured for the ducklings the approach behavior in...
The brown pelican and certain environmental pollutants in Louisiana
L. J. Blus, T. Joanen, A. A. Belisle, R. M. Prouty
1975, Bulletin of Environmental Contamination and Toxicology (13) 646-655
No abstract available....
DDD poisoning in a loon and the identification of the hydroxylated form of DDD
R. M. Prouty, J.E. Peterson, L. N. Locke, B.M. Mulhern
1975, Bulletin of Environmental Contamination and Toxicology (14) 385-388
No abstract available....
An empirical note on firm performance in government contract markets
Emil D. Attanasi, S. R. Johnson
1975, The Journal of Industrial Economics (23) 313-320
Public construction and, in particular, highway construction account for a large proportion of the non-defense expenditures by the government. Con- tracts for highway construction are let almost exclusively through a sealed tender process. Competitive bidding is used to encourage price competition. There is, however, a problem in insuring that the...
Crystal structure of the heptamolybdate(VI)(paramolybdate) ion, [Mo7O24]6–, in the ammonium and potassium tetrahydrate salts
Howard T. Evans Jr., B. M. Gatehouse, P. Leverett
1975, Journal of the Chemical Society, Dalton Transactions 505-514
The crystal structures of the isomorphous salts MI6[Mo7O24],4H2O (M = NH4 or K) have been refined by three-dimensional X-ray diffraction methods. Unit cell dimensions of these monoclinic compounds, space group P21/C with Z= 4, are, ammonium salt: a= 8·3934 ± 0·0008, b= 36·1703 ± 0·0045, c= 10·4715 ± 0·0011 Å, β= 115·958°± 0·008°; and potassium salt: a= 8·15 ±...
Continental drilling
Eugene Merle Shoemaker, editor(s)
1975, Report
No abstract available....
Data availability and the role of the Earth Resources Observation Systems Data Center
Allen H. Watkins
1975, Conference Paper, First comprehensive symposium on the practical application of earth resources survey data
With the launch of LANDSAT-1 in July 1972, and the follow-on launch of LANDSAT-2 in January of this year, routine availability of satellite imagery and electronic data of the earth's resources has become a reality. Federal data centers provide LANDSAT data to resource managers and the general public. These data...
Usefulness of LANDSAT data for monitoring plant development and range conditions in California's annual grassland
D. M. Carneggie, Stephen D. Degloria, R. N. Colwell
1975, Conference Paper, First comprehensive symposium on the practical application of Earth resources survey data
A network of sampling sites throughout the annual grassland region of California was established to correlate plant growth stages and forage production to climatic and other environmental factors. Plant growth and range conditions were further related to geographic location and seasonal variations. A sequence of LANDSAT data was obtained covering...
The South Dakota cooperative land use effort: A state level remote sensing demonstration project
Paul A. Tessar, Dennis R. Hood, William J. Todd
1975, Conference Paper, Proceedings of the NASA Earth Resources survey symposium
No abstract available....
K-Ar ages of Pleistocene rhyolitic volcanism in the Coso Range, California
Marvin A. Lanphere, G. Brent Dalrymple, Robert L. Smith
1975, Geology (3) 339-341
Rhyolite domes and rhyolite and basalt flows near Coso Hot Springs in the Coso Range, California, give K-Ar ages that range from about 0.04 ± 0.02 m.y. to 0.96 ± 0.19 m.y. Most of the units appear to be between 0.05 and 0.15 m.y. old. The total volume of erupted...
Organochlorine insecticide residues in the free-tailed bat (Tadarida brasiliensis) at Bracken Cave, Texas
D. R. Clark Jr., C.O. Martin, D. M. Swineford
1975, Journal of Mammalogy (56) 429-443
Fifty-nine free-tailed bats (Tadarida brasiliensis mexicana) were collected at Bracken Cave, Texas, and analyzed for organochlorine insecticides and polyehiorinated biphenyls (PCBs). Residues of DDE in the brain were greater in 12 young collected from the floor than in 15 young taken from the ceiling, but food deprivation, not higher residues...
Magma beneath Yellowstone National Park
G. P. Eaton, R.L. Christiansen, H. M. Iyer, A.D. Pitt, D. R. Mabey, H. R. Blank Jr., I. Zietz, M. E. Gettings
1975, Science (188) 787-796
The Yellowstone plateau volcanic field is less than 2 million years old, lies in a region of intense tectonic and hydrothermal activity, and probably has the potential for further volcanic activity. The youngest of three volcanic cycles in the field climaxed 600,000 years ago with a voluminous ashflow eruption and...
Application of ERTS images and image processing to regional geologic problems and geologic mapping in northern Arizona
Alexander F.H. Goetz, Frederic C. Billingsley, A. R Gillespie, M. J. Abrams, R. L. Squires, Eugene Merle Shoemaker, I. Lucchitta, D. P. Elston
1975, Technical Report 32-1597
The purpose of this study was to apply the techniques of computer image processing to ERTS images as an aid to the solution of some regional geologic problems of significant interest.ERTS-1 images were applied to studies in the Shivwits Plateau, Coconino Plateau, and north-central Arizona regions. Unprocessed ERTS images revealed...
