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184650 results.

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[Book review] Microbial Diseases of Fish, edited by R. J. Roberts
S. F. Snieszko
1983, Canadian Journal of Fisheries and Aquatic Sciences (40) 1847-1848
Review of: Microbial Diseases of Fish. Edited by R.J. Roberts, Special Publication No. 9 of the Society for General Microbiology. Academic Press, London. 1982. 305 p. $40.50 (U.S.)....
The fledging of common and thick-billed murres on Middleton Island, Alaska
Scott A. Hatch
1983, Journal of Field Ornithology (54) 266-274
Three species of alcids, Common and Thick-billed murres (Uria aalge and U. lomvia) and the Razorbill (Alca torda), have post-hatching developmental patterns intermediate to precocial and semi-precocial modes (Sealy 1973). The young leave their cliff nest sites at about one quarter of adult weight and complete their growth at sea....
Anaerobic oxalate degradation: Widespread natural occurrence in aquatic sediments
Richard L. Smith, Ronald S. Oremland
1983, Applied and Environmental Microbiology (46) 106-113
Significant concentrations of oxalate (dissolved plus particulate) were present in sediments taken from a diversity of aquatic environments, ranging from 0.1 to 0.7 mmol/liter of sediment. These included pelagic and littoral sediments from two freshwater lakes (Searsville Lake, Calif., and Lake Tahoe, Calif.), a hypersaline, meromictic,...
Resistance of salmonids to Aeromonas salmonicida: Relation between agglutinins and neutralizing activities
R. C. Cipriano
1983, Transactions of the American Fisheries Society (112) 95-99
Serum of furunculosis‐resistant rainbow trout Salmo gairdneri, when injected into brook trout Salvelinus fontinalis, increased resistance of the brook trout to virulent challenges of Aeromonas salmonicida, the furunculosis pathogen. Serum from susceptible Atlantic salmon Salmo salar did not confer passive resistance on brook trout although natural agglutinin titers in Atlantic...
Earthquakes; November-December 1982
W. J. Person
1983, Earthquake Information Bulletin (USGS) (15) 108-112
The months of November and December were quite active, seismically speaking, compared to the preceding months. The most devastating earthquake of the year occurred in Yemen on December 13 and killed hundreds of people. the largest earthquake of the year, a magnitude 7.7, occurred in the Pacific Tonga Islands on...
The effect of variable spring water conditions on mallard reproduction
Gary L. Krapu, A.T. Klett, Dennis G. Jorde
1983, The Auk (100) 689-698
Mallard (Anas platyrhynchos) breeding densities in the prairie pothole habitat of eastern North Dakota during 1961-1980 varied from 2.28 birds/km2 in 1977 to 9.47 birds/km2 in 1963 and were correlated with pond abundance (r = 0.543, P < 0.05). The number of basins used by pairs declined with drought, as...
Hydrology of the Ferron Sandstone aquifer and effects of proposed surface-coal mining in Castle Valley, Utah, with a section on stratigraphy and a section on leaching of overburden
Gregory C. Lines, Daniel J. Morrissey, Thomas A. Ryer, Richard H. Fuller
1983, Water Supply Paper 2195
Coal in the Ferron Sandstone Member of the Mancos Shale of Cretaceous age has traditionally been mined by underground techniques in the Emery Coal Field in the southern end of Castle Valley in east-central Utah. However, approximately 99 million tons are recoverable by surface mining. Ground water in the Ferron...
Variation in survival and recovery rates of ring-necked ducks
Michael J. Conroy, Robert T. Eberhardt
1983, Journal of Wildlife Management (47) 127-137
Band recovery data were used to examine sex-specific, geographic, and temporal variations in survival and recovery rates of ring-necked ducks (Aythya collaris). Survival rates were higher (P < 0.05) for males than for females in the preseason-banded sample and in 2 of 3 postseason samples; recovery rates were higher (P...
Nature and mechanics of the mount St Helens rockslide — avalanche of 18 May 1980
Barry Voight, R. J. Janda, H. Glicken
1983, Geotechnique (20) A176
The bulging sector of the north slope of Mount St. Helens collapsed on 18 May 1980, triggered by an earthquake, thereby creating a tremendous mass movement. This movement in turn initiated volcanic eruptions resulting in the formation of an avalanche of debris. Limit equilibrium analysis of the slope suggests that...
Questions posed by managers. Appendix III
C. Schonewald-Cox, J.W. Bayless
C. Schonewald-Cox, S. Chambers, B. MacBryde, L. Thomas, editor(s)
1983, Book chapter, Genetics and Conservation
No abstract available at this time...