Microcoulometric measurement of water in minerals
M. Cremer, H.N. Elsheimer, E.E. Escher
1972, Analytica Chimica Acta (60) 183-192
A DuPont Moisture Analyzer is used in a microcoulometric method for determining water in minerals. Certain modifications, which include the heating of the sample outside the instrument, protect the system from acid gases and insure the conversion of all hydrogen to water vapor. Moisture analyzer...
The future of salmonid communities in the Laurentian Great Lakes
Stanford H. Smith
1972, Journal of the Fisheries Research Board of Canada (29) 951-957
The effects of human population growth, industrialization, and the introduction of marine fishes have reduced the suitability of each of the Great Lakes for oligotrophic fish communities. The ultimate consequence has been a reduction of fishery productivity that has ranged from extreme in Lake Ontario to moderate in Lake Superior....
Population biology of alewives, Alosa pseudoharengus, in Lake Michigan, 1949-70
Edward H. Brown Jr.
1972, Journal of the Fisheries Research Board of Canada (29) 477-500
Alewives were unknown in Lake Michigan before 1949, but became extremely abundant in the 1960s and soon exceeded the carrying capacity of the lake. In 1967 they were decimated by a lakewide mass mortality, and have since been less abundant as "adults" (≥120 mm long), although numerous young were produced in...
Mixtures of malachite green and formalin for controlling Icthyophthirius and other protozoan parasites of fish
F. Leteux, Fred P. Meyer
1972, Progressive Fish-Culturist (34) 21-26
No abstract available. ...
Review of changing wildlife habitat and requirements for maintaining key species
H.W. Miller
1972, North Dakota Outdoors (35) 2-9
Abstract has not been submitted...
Policy statement on the use of toxicant in management of aquatic resources
R.S. Cook, A.M. Beeton, P.M. Cook, P.H. Derse, A. Hasler, R. E. Lennon, P. Sager, W. Selbig
1972, SFI Bulletin (233) 1-2
Abstract has not been submitted...
Blood chemistry values for some fishes of the upper Mississippi River
J. B. Hunn
1972, Journal of the Minnesota Academy of Science (38) 19-21
Abstract has not been submitted...
Concentrations of some inorganic constituents in gallbladder bile from some freshwater fishes
J. B. Hunn
1972, Copeia (4) 860-861
No abstract available....
Bird mortality at four towers in eastern North Dakota--fall 1972
M.L. Avery, T. Clement
1972, Prairie Naturalist (4) 87-95
Abstract has not been submitted...
Annual summary of water quality data for selected sites in the Pacific Northwest, October 1971 to September 1972
U.S. Geological Survey Northwest Water Resources Data Center
1972, Report
Water resources data collected in the Pacific Northwest during the 1972 water year include chemical and physical characteristics of surface water. Data included in this report were collected by the Water Resources Division of the U.S. Geological Survey under the direction of the following district chiefs: H.K. Hall, Idaho; George...
Studies on the control of whirling disease (Myxosoma cerebralis)
G.L. Hoffman Sr., G.L. Hoffman Jr.
1972, Journal of Wildlife Diseases (8) 49-53
Based on presumptive evidence of death (extrusion of polar filaments and disintegration of sporoplasm) 1.0%, 0.5%, and 0.25% calcium oxide or potassium hydroxide killed the spores of Myxosoma cerebrallis in vitro. Chlorine at 400 ppm destroyed 36% to 90% of the spores but 13% to 37% of those in the controls...
Fish viruses: Histopathologic changes associated with experimental channel catfish virus disease
K. Wolf, R. L. Herman, C. P. Carlson
1972, Journal of the Fisheries Research Board of Canada (29) 149-150
A histologic examination was carried out on fry with experimentally induced channel catfish virus disease (CCVD). The infection produced a hemorrhagic and necrotic disease with the target organs being the kidneys, liver, digestive tract, and skeletal muscle. The results agree with symptoms of the disease and with published data on...
Studies of motile aeromonads isolated from diseased warmwater and coldwater fishes
G. L. Bullock, P. K. Chen, H. M. Stuckey
1972, Bacteriological Proceedings (E123)
Effect of certain anesthetic agents on mallard ducks
D.R. Cline, R. J. Greenwood
1972, Journal of the American Veterinary Medical Association (161) 624-633
Four anesthetic agents used in human or veterinary medicine and 3 experimental anesthetic preparations were evaluated for effectiveness in inducing narcosis when administered orally to game-farm mallard ducks (Anas platyrhynchos).Tribromoethanol was the only compound to satisfy criteria of initial tests. Mean duration of the induction, immobilization, and recovery periods was...
Records of precipitation, water levels, and ground-water recharge to the Edwards and associated limestones, San Antonio area, Texas, 1971
Celso Puente
1972, Edwards Underground Water District Bulletin 30
No abstract available....
Stratigraphic nomenclature of Cambrian and Lower Ordovician rocks of easternmost southern Arizona and adjacent westernmost New Mexico
Philip Thayer Hayes
1972, Bulletin 1372-B
No abstract available....
Absolute stress measurements at the rangely anticline, Northwestern Colorado
R. V. de la Cruz, C.B. Raleigh
1972, International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts (9) 625-634
Five different methods of measuring absolute state of stress in rocks in situ were used at sites near Rangely, Colorado, and the results compared. For near-surface measurements, overcoring of the borehole-deformation gage is the most convenient and rapid means of obtaining reliable values for the...
Predation of schistosomiasis vector snails by ostracoda (crustacea)
I. G. Sohn, L.S. Kornicker
1972, Science (175) 1258-1259
An ostracod species of Cypretta is an effective predator in laboratory experiments on 1- to 3-day-old Biomphalaria glabrata, a vector snail of the blood fluke that causes the tropical and subtropical disease schistosomiasis....
New data on selected Ivory Coast tektites
F. Cuttitta, M. K. Carron, C. S. Annell
1972, Geochimica et Cosmochimica Acta (36) 1297-1309
Fourteen Ivory Coast tektites exhibit a range of bulk indices of refraction of 1.5156 to 1.5217 ± 0.0004 and of bulk specific gravities of 2.428 to 2.502 ±0.005. Seven of these Ivory Coast (IVC) tektites were analyzed for major and minor element content. Compared to tektites from other strewn fields,...
Annual compilation and analysis of hydrologic data for urban studies in the Austin, Texas, metropolitan area, 1970
J. K. VanZandt
1972, Report
No abstract available. ...
Avian cholera in cedar waxwings in Ohio
L. N. Locke, R.C. Banks
1972, Journal of Wildlife Diseases (8) 106-106
Avian cholera (Pasteurella multocida infection) was responsible for a localized die-off of cedar waxwings (Bombycilla cedrorum) at Steubenville, Ohio in late June, 1968....
Ground-water outflow from Chino Basin, Upper Santa Ana Valley, southern California
James J. French
1972, Water Supply Paper 1999-G
Ground-water outflow from Chino basin was calculated ,by a direct method using the equation Q = PIA, in which Q is the quantity of ground-water outflow, P is the average coefficient of permeability of the sediments through which the flow occurs, I is the average hydraulic gradient, and A is...
Why the Mayan cities of the Peten District, Guatemala, were abandoned
Charles Wythe Cooke
1972, Book chapter, Environmental geomorphology and landscape conservation (volume 1)
No abstract available. ...
Chemical and bacteriological quality of water at selected sites in the San Antonio area, Texas, August 1968-April 1972
R.D. Reeves, Jack Rawson, J.F. Blakey
1972, Report
No abstract available....
Survey for infectious hematopoietic necrosis (IHN) virus in Washington salmon
Donald F. Amend, James W. Wood
1972, Progressive Fish-Culturist (34) 143-147
A virus disease of juvenile sockeye salmon (Oncorhynchus nerka) has been a problem in Washington hatcheries since first reported by Rucker [9] in 1953. Presumably, the same disease has occurred in Oregon, and it is now referred to as the Oregon, and it is now referred to as the Oregon...
