Phenotypic variation of the Mexican duck (Anas platyrhynchos diazi) in Mexico
N.J. Scott Jr., R.P. Reynolds
1984, Condor (86) 266-274
A collection of 98 breeding Mexican Ducks (Anas platyrhynchos diazi) was made in Mexico from six areas between the United States border with Chihuahua and Lake Chapala, Jalisco, in order to study geographic variation. Plumage indices showed a relatively smooth clinal change from north to south; northern populations were...
[Book review] A guide to integrated fish health management in the Great Lakes basin, edited by F. P. Meyer, J. W. Warren, and T. G. Carey
G. L. Bullock
1984, Journal of Wildlife Diseases (20) 169-170
Review of: A guide to integrated fish health management in the Great Lakes basin, Special Publication 83-2. F. P. Meyer, J. W. Warren, and T. G. Carey, eds. 1983. Great Lakes Fishery Commission, Ann Arbor, Michigan....
Waste water management techniques at the United States national fish hatcheries
Adam G. Fox
1984, Conference Paper
No abstract available ...
Total gas pressure and oxygen and nitrogen saturation in warmwater ponds aerated with airlift pumps
N. C. Parker, M. A. Suttle, K. Fitzmayer
1984, Aquacultural Engineering (3) 91-102
Gas bubble disease and improper inflation of swim bladders in larval striped bass Morone saxatilis have been recently related in laboratory studies to very low levels of gas supersaturation. In other species, kills resulting from gas supersaturation have been reported in natural waters as large as Galveston Bay. We monitored warmwater ponds...
Feeding activity, rate of consumption, daily ration, and prey selection of major predators in the John Day Pool
G.A. Gray, D.E. Palmer, B.L. Hilton, P.J. Connolly, H.C. Hansel, J.M. Beyer, P.T. Lofty, G.M. Sonnevil
1984, Report
No abstract available ...
Use of Columbia River reservoirs for rearing by juvenile fall Chinook salmon and some management implications
G.A. Gray, D.W. Rondorf
1984, Conference Paper, Proceedings of the third annual conference of North American lake management society
No abstract available ...
Effects of twenty-five compounds on four species of aquatic fungi (Saprolegniales) pathogenic to fish
Tom A. Bailey
1984, Aquaculture (38) 97-104
Four species of aquatic fungi (Achlya flagellata, A. racemosa, Saprolegnia hypogyna, and S. megasperma) were exposed to 25 chemicals representing seven classes of compounds for 15 and 60 min, in an effort to identify potential fungicidal agents for use in fish culture. The antifungal activity of each chemical was compared with...
The changing hydrology at Mount St. Helens
S. Brantley
1984, Earthquake Information Bulletin (USGS) (16) 106-122
Synchrotron radiation determination of elemental concentrations in coal
J.R. Chen, N. Martys, E. C. T. Chao, J.A. Minkin, C.L. Thompson, A.L. Hanson, H.W. Kraner, K.W. Jones, B.M. Gordon, R.E. Mills
1984, Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms (3) 241-245
The variations with depth of the elemental concentrations in vitrinites in a series of vitrites have been determined using radiation from the Cornell high energy synchrotron source. All of the vitrites were selected from a single drill core sample of coal from the Emery coalfield, Utah. The results are compared...
Mineral resources of the Tracy Arm-Fords Terror Wilderness Study Area and vicinity, Alaska
Water Resources Division, U.S. Geological Survey
1984, Bulletin 1525
No abstract available....
Workshop 2: Biogeochemistry in mineral exploration
J. A. Erdman
1984, Journal of Geochemical Exploration (21) 123-128
No abstract available....
Hawaii earthquake of November 16, 1983
R.W. Decker, Robert Y Koyanagi
1984, Earthquake Information Bulletin (USGS) (16) 4-9
Oil company captures Wyoming earthquake
R.D. Clark
1984, Earthquake Information Bulletin (USGS) (16) 225-226
Volcanic studies at the David A. Johnston Cascades Volcano Observatory
S. Brantley
1984, Earthquake Information Bulletin (USGS) (16) 44-51
Monitoring activities at Mount St. Helens and other Cascade volcanoes
S. Brantley
1984, Earthquake Information Bulletin (USGS) (16) 68-105
Eruptive activity of Mount St. Helens; March 1980 March 1984
S. Brantley
1984, Earthquake Information Bulletin (USGS) (16) 52-67
Team effort meets 1983 landslide emergency in Utah
E. E. Brabb, R. W. Fleming
1984, Earthquake Information Bulletin (USGS) (16) 128-135
USGS adopts revised criteria and terms for hazards notices
D. Finley
1984, Earthquake Information Bulletin (USGS) (16) 190-190
Methods and economics of channel catfish production, and techniques for the culture of flathead catfish and other catfishes
J.V. Huner, H.K. Dupree
Dupree H. K., Huner J. V., editor(s)
1984, Book chapter, Third Report to the Fish Farmers: The Status of Warmwater Fish Farming Research
No abstract available at this time...
Monitoring active volcanoes
Robert I. Tilling
1984, Report
SOME APPLICATIONS OF SEISMIC SOURCE MECHANISM STUDIES TO ASSESSING UNDERGROUND HAZARD.
Art McGarr
Gay N.C.Wainwright E.H., editor(s)
1984, Conference Paper
Various measures of the seismic source mechanism of mine tremors, such as magnitude, moment, stress drop, apparent stress, and seismic efficiency, can be related directly to several aspects of the problem of determining the underground hazard arising from strong ground motion of large seismic events. First, the relation between the...
Bioaccumulation of toxic substances associated with dredging and dredged material disposal: a literature review
James G. Seelye, Michael J. Mac
1984, Report
A literature review of sediment bioassessment was conducted as the first step in the development of a more standardized and ecologically sound test procedure for evaluating sediment quality. Based on the review, the authors concluded that 1) a standardized laboratory bioassessment test should consist of flowthrough exposure of at least...
Pond culture systems
J.V. Huner, H.K. Dupree
Dupree H. K., Huner J. V., editor(s)
1984, Book chapter, Third Report to the Fish Farmers: The Status of Warmwater Fish Farming Research
No abstract available at this time...
NONFUEL MINERAL RESOURCES OF THE PACIFIC EXCLUSIVE ECONOMIC ZONE.
David Clague, James Bischoff, David Howell
1984, Conference Paper, Oceans Conference Record (IEEE)
The Pacific Exclusive Economic Zone contains a variety of hard mineral resources. Sand and gravel and their associated placer deposits of heavy minerals are the most likely to be developed in the near future, but offshore and deep water deposits of phosphorite, abyssal manganese nodules, ferromanganese crusts enriched in cobalt,...
Gold in natural water: A method of determination by solvent extraction and electrothermal atomization
J. B. McHugh
1984, Journal of Geochemical Exploration (20) 303-310
A method has been developed using electrothermal atomization to effectively determine the amount of gold in natural water within the nanogram range. The method has four basic steps: (1) evaporating a 1-L sample; (2) putting it in hydrobromic acid-bromine solution; (3) extracting the sample with methyl-isobutyl-ketone; and (4) determining the...
