Trends in fishery management of the Great Lakes
Stanford H. Smith
1970, Special Publication 7
Some hope is returning for recovery of the fish stocks of the Great Lakes, which have been outstanding examples of abuse although they are the world's largest and most valuable freshwater fishery resource. The lakes and the fish in them have been under complete jurisdiction of sovereign nations and...
Earthquakes induced by fluid injection and explosion
J. H. Healy, R. M. Hamilton, C.B. Raleigh
1970, Tectonophysics (9) 205-214
Earthquakes generated by fluid injection near Denver, Colorado, are compared with earthquakes triggered by nuclear explosion at the Nevada Test Site. Spatial distributions of the earthquakes in both cases are compatible with the hypothesis that variation of fluid pressure in preexisting fractures controls...
Major Land Resource Areas (MLRA)
Adapted from U.S. Soil Conservation Service
1970, Report
This is a polygon coverage of the Land Resource Regions and Major Land Resource Areas of the conterminous United States. Land resource regions are geographic areas that are characterized by a particular pattern of soils, climate, water resources and land uses. (USDA, Soil Conservation Service, 1981). Major land...
The environmental crisis--a call to action
Glen A. Sherwood
1970, Prairie Naturalist (2) 23-27
Abstract has not been submitted...
Whirling disease of trout and salmon caused by Myxosoma cerebralis in the United States of America
Glenn L. Hoffman
1970, Rivista Italiana Di Piscicoltura e Ittiopatologia (5) 29-33
Environmental education or environmental destruction
Glen A. Sherwood
1970, North Dakota Journal of Education (49) 20-22
Abstract has not been submitted...
Species interactions of the alewife in the Great Lakes
Stanford H. Smith
1970, Transactions of the American Fisheries Society (99) 754-765
The alewife (Alosa pseudoharengus) has caused serious problems in the Great Lakes for almost 100 years. It entered Lake Ontario in abundance via the Erie Canal during the 1860's when major piscivores were declining, and became the dominant species in the lake during the 1870's. The alewife subsequently spread throughout...
The effect of temperature on the rate of development and survival of alewife eggs and larvae
Thomas A. Edsall
1970, Transactions of the American Fisheries Society (99) 376-380
Eggs from Lake Michigan alewives (Alosa pseudoharengus) were incubated at 79 different temperatures from 42.1 to 87.0 F. Hatching occurred at 44.4-84.9 F and was optimum (38% hatched) at about 64 F. Incubation time varied from 15 days at 45 F to 3.7 days at 70 F and 2.1 days...
[Book review] Aspects of fish parasitology, edited by Angela E. R. Taylor and R. Muller
Glenn L. Hoffman
1970, Journal of Fish Biology (2) 385-386
Review of: Aspects of Fish Parasitology. Edited by Angela E. R. Taylor and R. Muller. SYMPOSIA OF THE BRITISH SOCIETY FOR PARASITOLOGY. Vol. 8....
Temperature tolerance of bloater (Coregonus hoyi)
Thomas A. Edsall, Donald V. Rottiers, Edward H. Brown Jr.
1970, Journal of the Fisheries Research Board of Canada (27) 2047-2052
Juvenile and young adult bloaters (Coregonus hoyi) were tested for tolerance to high temperatures. The ultimate upper lethal temperature of juvenile bloaters (26.75 C) appeared to be slightly higher than that of young adult bloaters, but was similar to that of juvenile ciscoes,Coregonus artedii (26.0 C), the only other North American coregonine for...
International control of parasitic diseases of fishes
Glenn L. Hoffman
1970, Conference Paper, Journal of Parasitology
No abstract available at this time...
Growth, age at metamorphosis, and sex ratio of northern brook lamprey in a tributary of southern Lake Superior
Harold A. Purvis
1970, Copeia (1970) 326-332
Growth was studied of five year classes of the northern brook lamprey, Ichthyomyzon fossor, collected from the Sturgeon River during intervals between treatment of the stream with a lampricide. Growth varied considerably among year classes. Larvae of the 1963 year class were slightly longer at age II and 30% longer...
Characteristics of North Dakota goose hunters
Glen A. Sherwood
1970, North Dakota Outdoors (33) 8-11
Abstract has not been submitted...
Neutron radiative capture methods for surface elemental analysis
J.I. Trombka, Frank E. Senftle, R. Schmadebeck
1970, Nuclear Instruments and Methods (87) 37-43
Both an accelerator and a 252Cf neutron source have been used to induce characteristic gamma radiation from extended soil samples. To demonstrate the method, measurements of the neutron-induced radiative capture and activation gamma rays have been made with both Ge(Li) and NaI(Tl) detectors, Because...
Television experiment for Mariner Mars 1971
Harold Masursky, R.M. Batson, W. Borgeson, M. H. Carr, J. R. McCauley, D. F. Milton, R. Wildey, D. Wilhelms, B. C. Murray, N. Horowitz, R. Leighton, R.V. Sharp, W. Thompson, G. Briggs, P. Chandeysson, E. Shipley, C. Sagan, J. B. Pollack, Joshua Lederberg, E.C. Levinthal, W. Hartmann, T. B. McCord, B. J. Smith (compiler), M. E. Davies, G. De Vaucouleurs, C.B. Leovy
1970, Icarus (12) 10-45
The Television Experiment objectives are to provide imaging data which will complement previously gathered data and extend our knowledge of Mars. The two types of investigations will be fixed-feature (for mapping) and variable-feature (for surface and atmospheric changes). Two cameras with a factor-of-ten difference in resolution will be used on...
Lunar theory and processes: Post-sunset horizon "afterglow"
D.E. Gault, J. W. Adams, R.J. Collins, G.P. Kuiper, J. P. O'Keefe, R.A. Phinney, E.M. Shoemaker
1970, Icarus (12) 230-232
No abstract available....
Determination of iridium in mafic rocks by atomic absorption
F.S. Grimaldi, Marian Moeller Schnepfe
1970, Talanta (17) 617-621
Iridium is determined in mineralized mafic rocks by atomic absorption after fire-assay concentration into a gold bead. Interelement interferences in the atomic-absorption determination are removed and Ir sensitivity is increased by buffering the solutions with a mixture of copper and sodium sulphates. Substantial amounts of Ag,...
Atmospheric collection of debris from the Revelstoke and Allende fireballs
M. H. Carr
1970, Geochimica et Cosmochimica Acta (34) 689-700
In two separate events, Revelstoke and Allende, the air through which a fireball had been observed to pass was sampled for meteoritic debris. Particulate matter was collected on fibrous filters, which were mounted on aircraft and flown downwind from the site of the...
Tektite 1, man-in-the-sea project: Marine Science Program
H. Edward Clifton, Conrad V.W. Mahnken, J. C. Van Derwalker, R.A. Waller
1970, Science (168) 659-663
The Tektite experiment was designed to provide data for a number of behavioral, biomedical, and engineering studies in addition to the marine sciences program. Conditions for some of these studies were not altogether compatible with the program for the marine sciences. For example, isolation imposed by human behavioral studies precluded...
Stress of anesthesia with M.S. 222 and Benzocaine in Rainbow Trout (Salmo gairdneri)
Gary Wedemeyer
1970, Journal of the Fisheries Research Board of Canada (27) 909-914
Rainbow trout (Salmo gairdneri) anesthetized with M.S. 222 for periods up to 12 min experience interrenal ascorbate depletion, uremia, and moderate hypercholesterolemia. Anesthesia with neutralized M.S. 222 (pH 7) or benzocaine prevented these changes and significantly reduced the variability in plasma glucose, cholesterol, and cortisol, indicating that the stress of anesthesia...
Morphology of certain viruses of Salmonid fishes. II. In vivo studies of infectious Hematopoietic Necrosis Virus
Donald F. Amend, Velma C. Chambers
1970, Journal of the Fisheries Research Board of Canada (27) 1385-1388
Juvenile sockeye salmon (Oncorhynchus nerka) were injected with the infectious hematopoietic necrosis (IHN) virus, and tissue samples from the anterior kidney, spleen, liver, intestine, and pyloric caeca of moribund fish were prepared for electron microscopy. Bullet-shaped virus particles measuring 158 × 90 mμ were observed in the hematopoietic tissues of the anterior kidney...
Geology and ground-water resources of Cerro Gordo County, Iowa
H.G. Hershey, K.D. Wahl, W. L. Steinhilber
1970, Water Supply Bulletin 9
The basic geologic framework underlying Cerro Gordo County consists of an igneous or metamorphic Precambrian basement complex overlain by, in ascending order, consolidated sedimen tary rocks of Precambrian, Cambrian, Ordovician, Devonian, Mississippian, and Cretaceous age, and unconsolidated sand, gravel, and clay of Quaternary age. Structurally the county is in the...
Low-flow characteristics of Iowa streams through 1966
Albert J. Heinitz
1970, Iowa Natural Resources Council Bulletin 10
No abstract available....
Retention of mercury by salmon
Donald F. Amend
1970, Progressive Fish-Culturist (32) 192-194
Consuming fish that have been exposed repeatedly to mercury derivatives is a potential public health hazard because fish can accumulate and retain mercury in their tissues (Rucker, 1968). Concern has been expressed in the United States because mercurials have been used extensively in industry and as prophylactic and...
Lunar soil: Size distribution and mineralogical constituents
M.B. Duke, C.C. Woo, M. L. Bird, G.A. Sellers, R. B. Finkelman
1970, Science (167) 648-650
The lunar soil collected by Apollo 11 consists primarily of submillimeter material and is finer in grain size than soil previously recorded photographically by Surveyor experiments. The main constituents are fine-grained to glassy rocks of basaltic affinity and coherent breccia of undetermined origin. Dark glass, containing abundant nickel-iron spheres, coats...
