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Page 5340, results 133476 - 133500

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Not all publications have extents, not all extents are completely accurate
Freshwater aspects of anadromous salmonid enhancement
Rowan W. Gould
1982, NOAA Technical Report NMFS Circular 447
Freshwater enhancement of anadromous salmonid populations has been practiced in the United States and Canada since the late 1800's. Reduction of natural spawning habitat and increasing fishing pressure make artificial enhancement a possible alternative to declining populations. Enhancement of anadromous salmonids involved improvement of the natural environment and reducing natural mortality....
The geology of Europa
Baerbel K. Lucchitta, Laurence A. Soderblom
1982, Book chapter, Satellites of Jupiter
The map units and lineations of Europa are detailed, and the geologic processes, and history, and thick and thin ice models of the satellite are discussed. It is concluded that Europa lacks evidence of a horizontally stratified crust; the geology appears characterized by disruption of the crust and intrusions into...
Results of a modeling workshop concerning economic and environmental trends and concomitant resource management issues in the Mobile Bay area
David B. Hamilton, Austin K. Andrews, Gregor T. Auble, Richard A. Ellison, Richard A. Johnson, James E. Roelle, Michael J. Staley
1982, Report
During the past decade, the southern regions of the U.S. have experienced rapid change which is expected to continue into the foreseeable future. Growth in population, industry, and resource development has been attributed to a variety of advantages such as an abundant and inexpensive labor force, a mild climate,...
Riparian fencing, grazing, and trout habitat preference on Summit Creek, Idaho
Charles R. Keller, Kenneth P. Burnham
1982, North American Journal of Fisheries Management (2) 53-59
In 1975, 3.2 km of Summit Creek, Idaho were fenced by the Bureau of Land Management to exclude livestock from the riparian area. Six stream sections were electrofished in 1979 to determine differences in trout abundance, size, and growth between grazed and ungrazed stream sections. Electrofishing stations were paired by...
HEP as a planning tool: an application to waterfowl enhancement
Scott C. Matulich, Jeffrey E. Hanson, Ivan Lines, Adrian Farmer
1982, Transactions of the North American Wildlife and Natural Resources Conference (47)
To many, the principal role of wildlife agencies in public and private resource development has been that of impact mitigation. With known or pending habitat damage, biologists have to develop mitigation or compensation plans. Unfortunately, once in a mitigation framework, they are in a no-win situation, seeking remedial action at...
Dwornikite, (Ni,Fe)SO 4 .H 2 O, a member of the kieserite group from Minasragra, Peru
C. Milton, H. T. Evans Jr., R. G. Johnson
1982, Mineralogical Magazine (46) 351-355
A new nickel sulphate monohydrate is described from V-sulphide ore from Minasragra; it occurs associated with patronite (VS 2 ) with various sulphates, sulphur and bitumen. Dwornikite forms fine-grained white aggregates mixed with other oxidation products. Indexed X-ray powder data are tabulated; strongest lines 3.342(100) , 4.732(70), 3.024(70), 4.754(50), 3.293(35), 2.491(35) A;...
Accumulation and loss of 2' ,5-dichloro-4'-nitrosalicylanilide (Bayer 73) by fish: laboratory studies
Verdel K. Dawson, Joe B. Sills, Charles W. Luhning
1982, Investigations in Fish Control 90
Residues of the 2-aminoethanol salt of 2',5-dichloro-4'-nitrosalicylanilide (Bayer 73), as determined by gas-liquid chromatography, were rapidly accumulated by fish exposed to the lampricide -in blood plasma, gallbladder bile, and muscle tissue of coho salmon (Oncorhynchus kisutch) and rainbow trout (Salmo gairdneri), and in bile and muscle of channel catfish (Ictalurus...
Changes in vegetation structure in seeded nesting cover in the prairie pothole region
K.F. Higgins, W.T. Barker
1982, Special Scientific Report - Wildlife 242
A sample of 365 stands of seeded nesting cover (mixtures of cool-season grasses and legumes) was studied in the glaciated prairie pothole region during 1977-79. Measurements of species composition, canopy cover, plant height, and visual obstruction values differed with stand age but only in a general way when results from...