J. Tautin, J.B. Low
1975, Transactions of the North American Wildlife and Natural Resources Conference (40) 334-345
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Page 5440, results 135976 - 136000
Publication Extents
Not all publications have extents, not all extents are completely accurateD.B. Marshall, A. Baldridge, James C. Bartonek, W. King, O.T. Oure, R.J. Robel, J. M. Scott
1975, The Auk (92) 1B-16B
No abstract available....
J.R. Maestrelli, Stanley N. Wiemeyer
1975, The Wilson Bulletin (87) 45-53
A 7-year-old female Bald Eagle from Alabama was paired with a 4-year-old Alaskan male in a large flight pen during December 1969. Both birds were free of physical defects when originally placed in the pen but the female was blind in one eye prior to the 1973 breeding season.....Nesting first...
Matthew C. Perry
1975, Ducks Unlimited (39) 14-16,
R. B. Clapp
1975, Special Scientific Report - Wildlife 193
Birds imported into the United States in 1972 are tabulated by species. Total numbers for the period 1968-72 are given for the more commonly imported taxa. The number of birds imported in 1972 (640,995) decreased by about one third from that of 1971, largely as a result of...
Richard M. Hopper, Aelred D. Geis, Jack R. Grieb, Lewis Nelson Jr.
1975, Book, Wildlife Monographs
No abstract available....
1975, Report
L. C. McEwen, J.O. Ells
1975, U.S. International Biological Program, Grassland Biome Technical Report No. 289.
J.C. Pederson, D.H. Nish
1975, Publication no. 75-1.
A. D. Geis
David Euler, Frederick Gilbert, Gerald McKeating, editor(s)
1975, Book chapter, Wildlife in Urban Canada, Proceedings of a Symposium held at the University of Guelph, May 26 to May 30, 1975
L.F. Stickel
1975, Book chapter, Hearings before the Subcommittee on the Environment and the Atmosphere, Committee on Science and Technology, U.S. House of Representatives, November 14, 1975
W. H. Stickel
A.D. McIntyre, C.F. Mills, editor(s)
1975, Book chapter, Ecological Toxicology Research: Effects of Heavy Metal and Organohalogen Compounds: Proceedings of a NATO Science Committee Conference
Summary: Pollutants tend to simplify plant and animal communities by causing a progressive loss of species. At the extreme, this leads to erosion and loss of soil fertility. Weedy, broadly adapted species increase. Among animals, carnivorous species and groups are often the first to suffer. This is...
L.D. Mech, R.A. Rausch
D.H. Pimlott, editor(s)
1975, Book chapter, Wolves: Proceedings of the First Working Meeting of Wolf Specialists and of the First International Conference on the Conservation of the Wolf
C.S. Robbins
Sidney A. Gauthreaux Jr., editor(s)
1975, Book chapter, Proceedings of a Conference on the Biological Aspects of the Bird/Aircraft Collision Problem
Only in the past 5 years has it become feasible to map the relative abundance of North American birds. Two programs presently under way and a third that is in the experimental phase are making possible the up-to-date mapping of abundance as well as distribution. A fourth program that has...
C.S. Robbins, W. Harrison, G.S. Keith, R.G. McCaskie, R.T. Peterson, N. Pettingell, O.S. Pettingell Jr., A. Small, R.W. Smart, J.A. Tucker
1975, Book
The purpose of this Checklist is to provide a complete up-to-date list of the bird species that have been recorded in the 49 continental United States and Canada. This list includes the native North American breeding species, the regular visitors, the accidentals from other countries that are believed to...
Harald H. Mehnert, Peter D. Rowley, Dwight L. Schmidt
1975, Journal of Research of the U.S. Geological Survey (3) 233-236
Numerous middle Cretaceous stocks and small batholiths intruded Middle and Upper Jurassic sedimentary and volcanic rocks in the Lassiter Coast area of the southern Antarctic Peninsula. To establish the age of the quartz diorite and granodiorite plutonic events, five plutons were dated by the K-Ar method. The results indicate a...
Lawrence J. Drew
1975, Journal of Research of the U.S. Geological Survey (3) 169-179
For the 1950-71 period of petroleum exploration in the Powder River Basin, northeastern Wyoming and southeastern Montana, three specific topics were investigated. First, the wildcat wells drilled during the ambient phases of exploration are estimated to have discovered 2.80 times as much petroleum per well as the wildcat wells drilled...
K. A. Howard, H. G. Wilshire
1975, Journal of Research of the U.S. Geological Survey (3) 237-251
Lavalike materials that were emplaced in a fluid state occur in and around lunar impact craters whose diameters range from 3 km to more than 200 km and whose ages span a time interval of at least 3.5 b.y. Evidence of fluid emplacement includes flow lobes and leveed channels, a...
F.K. Fields, D. B. Adams
1975, Journal of Research of the U.S. Geological Survey (3) 131-136
Estimates of temperature and precipitation were made for northeastern Utah from information that was collected at 67 locations. The variable-length records were converted to the common-time base of 1941-70; then general relations were developed to extend the converted point values to unsampled sites. Regression techniques were used to fill voids...
Thomas C. Winter
1975, Journal of Research of the U.S. Geological Survey (3) 137-148
Locating and delineating buried glacial-drift aquifers poses one of the major problems to hydrogeologists working in glacial terrain. To show the vertical and horizontal boundaries of aquifers, most techniques require a multiple set of maps, a fence diagram, or a combination of maps and sections. Calculations of the first two...
Catharine P. Thomas
1975, Journal of Research of the U.S. Geological Survey (3) 181-185
An integrated-intensity method has been devised to improve the computer analysis of data by emission spectrography. The area of the intensity profile of a spectral line is approximated by a rectangle whose height is related to the intensity difference between the peak and background of the line and whose width...
C. W. Naeser, D. G. Brookins
1975, Journal of Research of the U.S. Geological Survey (3) 229-231
Fission-track ages have been determined on eight apatite and four sphene concentrates separated from plutonic rocks in Maine. K-Ar and Rb-Sr ages for some of these rocks were previously published. In northeastern Maine the whole-rock Rb-Sr, biotite K-Ar, and apatite fission-track ages are concordant at 400-420 million years, whereas in...
John R. Watterson, George J. Neuerburg
1975, Journal of Research of the U.S. Geological Survey (3) 191-195
In the proposed method, a 12.5-g sample is digested with nitric acid and evaporated to dryness; the excess nitric acid is removed by reaction with formic acid. Tellurium is extracted from the dried residue into hydrobromic acid and is then coprecipitated with arsenic, using hypophosphorous acid as the reducing agent....
F. W. Brown, F.O. Simon, L. P. Greenland
1975, Journal of Research of the U.S. Geological Survey (3) 187-190
Arsenic in soil and rock samples may be determined in part-per-million concentrations using a radiochemical-isotope dilution method. Arsenic in the sample plus added As76 tracer is separated as arsine and determined spectrophotometrically as a molybdenum blue complex. The As76 activity in the absorbing solution allows corrections for chemical losses. A lower limit...
Donald A. Singer
1975, Journal of Research of the U.S. Geological Survey (3) 163-167
The relative efficiencies of equivalent-density, square and equilateral triangular (hexagonal) grids used in the search for elliptical targets are determined for ellipses having relative semi-major axes ranging from 0.50 to 1.00 of the square grid spacing and having shapes (minor axes/major axes) ranging from 0.2 to 1.0. Using the probability...