Albinism in lampreys in the upper Great Lakes
Robert A. Braem, Everett L. King
1971, Copeia (1971) 176-179
Albinism in fishes is relatively rare except in some stocks of hatchery-reared salmonids. In the Petromyzonidae, only four albino lampreys have been reported....
Effects of temperature on electrolyte balance and osmoregulation of the alewife (Alosa pseudoharengus) in fresh and sea water
Jon G. Stanley, Peter J. Colby
1971, Transactions of the American Fisheries Society (100) 624-638
A study of the effects of temperature and salinity on ionoregulation in the alewife, Alosa pseudoharengus, revealed that concentrations of sodium, potassium, and calcium in plasma and muscle were similar in fish adapted to fresh water and those adapted to sea water. The non-stressed alewife is apparently an excellent...
Natural mortality among cliff swallows
H.A. Kantrud
1971, Blue Jay (29) 162-162
Abstract has not been submitted...
Na+, K+-activated-ATPase inhibition in rainbow trout: A site for organochlorine pesticide toxicity?
Paul W. Davis, Gary A. Wedemeyer
1971, Comparative Biochemistry and Physiology, Part B: Comparative Biochemistry (40) 823-827
1. The Na+, K+-activated, Mg2+-dependent-ATPase enzyme system in a heavy microsomal fraction of rainbow trout (Salmo gairdneri) brain was inhibited in vitro by chlorinated hydrocarbon pesticides.2. T50 (concentration at 50 per cent inhibition) values for dicofol, endosulfan and DDT were <span class="formulatext stixSupport mathImg" title="Click to view...
A decade of international cooperation brings a standard seismic point of view
H. S Whitcomb Jr.
1971, Earthquake Information Bulletin (USGS) (3) 16-19
Whether in a castle in Italy, a police station in Iceland, o an abandoned gold mine in Australia, the sensitive instruments in the Worldwide Seismograph Network send a steady flow of standard earthquake records to the geophysical scientific community. They provide the raw data that make possible very precise earthquake...
Review of: Fish, amphibian and reptile remains from archaeological sites, Part 1: Southeastern and southwestern United States
C. L. Douglas
Stanley J. Olsen, editor(s)
1971, Report
No abstract available at this time...
Results from the apollo-12 passive seismic experiment
G. Latham
1971, Earthquake Information Bulletin (USGS) (3) 4-9
The objective of the passive seismic experiment is to measure vibrations of the lunar surface produced by all natural and artificial sources of seismic energy and to use these data to deduce the internal structure and composition of the moon, the nature of forces which may cause deformation of the...
Records of precipitation, water levels, and ground-water recharge to the Edwards and associated limestones, San Antonio area, Texas, 1970
Celso Puente
1971, Edwards Underground Water District Bulletin 27
No abstract available. ...
Ground-water discharge from the Edwards and associated limestones, San Antonio area, Texas, 1970
Celso Puente
1971, Edwards Underground Water District Bulletin 26
No abstract available....
Glacial marine sediments in the precambrian Gowganda formation at Whitefish Falls, Ontario (Canada)
D. A. Lindsey
1971, Palaeogeography, Palaeoclimatology, Palaeoecology (9) 7-25
Study of a well-exposed section of the Gowganda Formation at Whitefish Falls, Ontario, suggests criteria for the recognition of glacial marine sediments. Thickness of hundreds of feet, lateral continuity, faint internal stratification, sorted lenses of sandstone and conglomerate, and dropstones characterize much of the tillite. Thickness of hundreds of feet,...
Continuous extraction of organic materials from water
M. C. Goldberg, L. DeLong, L. Kahn
1971, Environmental Science & Technology (5) 161-162
No abstract available....
Comparison of Sr87 Sr86 for sea-water strontium and the Eimer and Amend SrCO3
R.A. Hildreth, W.T. Henderson
1971, Geochimica et Cosmochimica Acta (35) 235-238
A series of analyses were undertaken to determine a precise difference between sea-water strontium and the Eimer and Amend SrCO3 standard. A mean difference between the sea-water composite and the Eimer and Amend SrCO3 of 0.00107 ± 0.000042 was obtained....
The earth's core: Speculations on its chemical equilibrium with the mantle
R. Brett
1971, Geochimica et Cosmochimica Acta (35) 203-221
A review of the literature indicates that a reasonable estimate of the composition of the earth's core is iron with Ni0–5, Si10–25 (wt.%). Thermodynamic calculations and comparison of chondritic with terrestrial abundances indicate that 1 wt.% each of Mn, P, and Cr might also be present. A core of this composition...
Two former faces of the moon
D.E. Wilhelms, D.E. Davis
1971, Icarus (15) 368-372
Systematic geologic mapping of the lunar near side has resulted in the assignment of relative ages to most visible features. As a derivative of this work, geologic and artistic interpretations have been combined to produce reconstructions of the Moon's appearance at two significant points in its history. The reconstructions, although...
Alewife dieoffs: Why do they occur?
Peter J. Colby
1971, Limnos (4) 18-27
Periodid midwinter, early spring, and summer mortalities of alewives (Alosa pseudoharengus) have been common in the Great Lakes since the first appearance of the silvery marine invader in Lake Ontario in the mid-1870's. In 1967 a nationally publicized dieoff of tremendous magnitude (estimated at several hundred million pounds of...
Blood cell lineage in the sea lamprey, Petromyzon marinus (Pisces: Petromyzontidae)
George W. Piavis, James L. Hiatt
1971, Copeia (1971) 722-728
Blood cell types of the sea lamprey, Petromyzon marinus, are described and identified and the lineage of mature circulating cells in peripheral blood is traced to blast cells in the hematopoietic fat body. The fat body appears to be the phylogenetic precursor of bone marrow in higher forms, since blood...
Seasonal distribution of zooplankton in the northern basin of Lake Chad
A.H. Robinson, Patricia K. Robinson
1971, Journal of Zoology (163) 25-61
More than 300 pairs of fine and coarse mesh plankton net samples were collected in the northern basin of Lake Chad during an 18-month period, June 1967 to November 1968. The seasonal distribution and abundance of the dominant species of Rotifera and Crustacea are given in addition to a general...
Selective food preferences of walleyes of the 1959 year class in Lake Erie
John W. Parsons
1971, Transactions of the American Fisheries Society (100) 474-485
Stomachs were examined from 1,473 walleyes (Stizostedion vitreum vitreum) of the 1959 year class collected in western Lake Erie from June 1959 to October 1960. In the same period, the relative abundance and lengths of potential forage species were determined from trawl catches. The walleye fed almost entirely on fish....
Earthquakes: May-June 1971
Carl A. Posey, editor(s)
1971, Earthquake Information Bulletin (USGS) (3) 26-27
No abstract available....
Seasonal distributions of salinity, phytoplankton nutrients, and dissolved organic carbon in south San Francisco Bay, 1960-1970
L. E. Schemel
1971, Thesis
No abstract available....
Thermoluminescence of Apollo 12 lunar samples
Richard R. Doell, G. Brent Dalrymple
1971, Earth and Planetary Science Letters (10) 357-360
Thermoluminescence (TL) glow curve and decay characteristics of Apollo 12 fines and soil samples are similar to those from Apollo 11. Interpretation of the results from the core sample is difficult because of inadequate sample, spacing, but it appears that the part...
Comments on the use of Hiatella arctica for determining cenozoic sea temperatures
R.W. Rowland, D.M. Hopkins
1971, Palaeogeography, Palaeoclimatology, Palaeoecology (9) 59-61
[No abstract available]...
Scanning electron microscopy of clays and clay minerals
B.F. Bohor, R.E. Hughes
1971, Clays and Clay Minerals (19) 49-54
The scanning electron microscope (SEM) proves to be ideally suited for studying the configuration, texture, and fabric of clay samples. Growth mechanics of crystalline units—interpenetration and interlocking of crystallites, crystal habits, twinning, helical growth, and topotaxis—also are uniquely revealed by the SEM.Authigenic kaolins make up the bulk of the examples...
Variation of iridium in a differentiated tholeiitic dolerite
L. P. Greenland
1971, Geochimica et Cosmochimica Acta (35) 319-322
Iridium has been determined in a drill core from the Great Lake (Tasmania) dolerite sheet. Iridium decreases systematically from the mafic dolerites (0.25 ppb) to the granophyres (0.006 ppb). The trend with differentiation closely parallels that of chromium....
A test of the 40Ar/39Ar age spectrum technique on some terrestrial materials
M. A. Lanphere, G. Brent Dalrymple
1971, Earth and Planetary Science Letters (12) 359-372
40Ar/39Ar age spectra were determined for 10 terrestrial rock and mineral samples whose geologic history is known from independent evidence. The spectra for six mineral and whole rock samples, including biotite, feldspar, hornblende, muscovite, and granodiorite, that have experienced post-crystallization heating did...
