E.B. Nuhfer, Richard Hereford
1988, Geology (16) 759-760
No abstract available....
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Page 4258, results 106426 - 106450
Publication Extents
Not all publications have extents, not all extents are completely accurateKen D. Bovee
1988, Book, Western Proceedings: 68th Annual Conference of the Western Association of Fish and Wildlife Agencies
No abstract available....
David J. Hoffman, Harry M. Ohlendorf, Thomas W. Aldrich
1988, Archives of Environmental Contamination and Toxicology (17) 519-525
The frequency and types of malformations are described that were encountered during the spring of 1983 in a natural population of aquatic birds exposed to agricultural drainwater ponds and food items containing high concentrations of selenium in central California. A total of 347 nests of aquatic birds containing 1,681 eggs...
R.R. Knight, B.M. Blanchard, L.L. Eberhardt
1988, Wildlife Society Bulletin (16) 121-125
No abstract available....
J. M. Motooka
1988, Applied Spectroscopy (42) 1293-1296
An atomic absorption extraction technique which is widely used in geochemical exploration for the determination of Ag, As, Au, Bi, Cd, Cu, Mo, Pb, Sb, and Zn has been modified and adapted to a simultaneous inductively coupled plasma-atomic emission instrument. The experimental and operating parameters are described for the preconcentration...
Albert T. Klett, Terry L. Shaffer, Douglas H. Johnson
1988, Journal of Wildlife Management (52) 431-440
We estimated nest success of mallard (Anas platyrhynchos), gadwall (A. strepera), blue-winged teal (A. discors), northern shoveler (A. clypeata), and northern pintail (A. acuta) for 5 regions in North Dakota, South Dakota, and Minnesota, for 1-3 periods between 1966 and 1984, and for 8 habitat classes. We obtained composite estimates...
Galen B. Rathbun, Robert L. Brownell Jr., Katherine Ralls, John Engbring
1988, Marine Mammal Science (4) 265-270
The dugong, Dugong dugon, is widely distributed throughout the Indo-Pacific region in shallow tropical and subtropical waters (Nishiwaki and Marsh 1985).The International Union for Conservation of Nature and Natural Resources lists the species as vulnerable (Thornback and Jenkins 1982), as it is severely depleted or extinct in many parts of...
P.A. Bisson, J.L. Nielsen, J.W. Ward
1988, Transactions of the American Fisheries Society (117) 322-335
We monitored habitat use and summer production of stocked underyearling coho salmon Oncorhynchus kisutch from 1983 to 1986 in three streams affected by the 1980 eruption of Mount St. Helens, Washington. Two streams were in the blast area and one was on a volcanic mudflow terrace, Midsummer water temperatures frequently exceeded presumed...
J.R. Bolt, R.M. McKay, B.J. Witzke, M.P. McAdams
1988, Nature (333) 768-770
The earliest tetrapods known are from two or three Upper Devonian1–3 and some 20 Lower Carboniferous localities in Scotland4 and North America5–8. Most sites yield few and fragmentary specimens; well-preserved and even partially articulated material is exceedingly rare. This report discusses a middle Lower Carboniferous site rich in amphibian and fish...
K. Thornton, Clair B. Stalnaker, K. Baun
1988, Book, Proceedings of the international symposium on water quality modeling of agricultural non-point sources
No abstract available....
C.J. Pennycuick, H.H. Obrecht III, M.R. Fuller
1988, Journal of Experimental Biology (135) 253-264
Measurements of the body frontal area of some large living waterfowl (Anatidae) and raptors (Falconiformes) were found to vary with the two-thirds power of the body mass, with no distinction between the two groups. Wind tunnel measurements on frozen bodies gave drag coefficients ranging from 0·25 to 0·39, in the...
D.L. Forthman-Quick, E. F. Hill
1988, Journal of Wildlife Management (52) 233-237
Use of conditioned taste aversion (CTA) has been proposed to reduce consumption of California condor (Gymnogyps californianus) eggs by ravens (Corvus corax). Although landrin has induced aversions in ravens and other birds, no data were available on behavioral and physiological effects of landrin on condors, non-target birds that might consume...
H.H. Obrecht III, C.J. Pennycuick, M.R. Fuller
1988, Journal of Experimental Biology (135) 265-273
The aerodynamic drag of bird bodies was measured in a wind tunnel, with and without back-mounted dummy radio transmitters. Flight performance estimates indicate that the drag of a large transmitter can cause a substantial reduction of a migrant’s range, that is, the distance it can cover in non-stop flight. The...
Carl Markon
1988, Conference Paper, Proceedings, resource technology 88: International Symposium on Advanced Technology in Natural Resource Management
No abstract available....
P.C. Bennett, M.E. Melcer, D. I. Siegel, J.P. Hassett
1988, Geochimica et Cosmochimica Acta (52) 1521-1530
The dissolution of quartz in dilute aqueous solutions of organic acids at 25° and standard pressure was investigated by the batch dissolution method. The bulk dissolution rate of quartz in 20 mmole/Kg citrate solutions at pH 7 was 8 to 10 times faster than that in pure water. After 1750...
J.R. Newman, R. K. Schreiber
1988, Environmental Toxicology and Chemistry (7) 381-390
Since the 1880s, there have been repeated reports worldwide of toxic effects to wildlife from air pollution. Incidents in North America were recorded as early as the 1920s and as recently as last year. The effects have ranged from death and injury to increased incidence of infectious diseases, and they are...
W.C. Loper, T.E. Behrendt, W.P. Schaffstall
1988, Water Data Report PA-87-2
No abstract available....
Dora R. M. Passino, James P. Hickey, Anthony M. Frank
1988, Book, Proceedings of the QSAR: third international workshop on quantitative structure-activity relationships in environmental toxicology
In the Laurentian Great Lakes, more than 300 contaminants have been identified in fish, other biota, water, and sediment. Current hazard assessment of these chemicals by the National Fisheries Research Center-Great Lakes is based on their toxicity, occurrence in the environment, and source. Although scientists at the Center have tested...
A.P. LeHuray, Stanley E. Church, Randolph A. Koski, R. M. Bouse
1988, Geology (16) 362-365
We report Pb isotope ratios of sulfides deposited at seven recently active mid-ocean ridge (MOR) hydrothermal vents. Sulfides from three sediment-starved sites on the Juan de Fuca Ridge contain Pb with isotope ratios identical to their local basaltic sources. Lead in two deposits from the sediment-covered Escanaba Trough, Gorda Ridge,...
Charles J. Henny
1988, Murrelet (69) 33-36
No abstract available. ...
Paul Stephen Corn, R. Bruce Bury
1988, Journal of Mammalogy (69) 427-429
No abstract available....
Mary C. Watzin, P.F. Roscigno, James D. Scurry, E. Randy Roach
1988, Conference Paper, Proceedings of the Fifth National Moss Users Workshop
Geographic Information Systems (GIS) technologies are being used in three neutral resource management studies of Mobile Bay, AL. Each study is briefly discussed. In the first, the GIS was used to analyze wetland habitat changes in the bay over a 25-year period. In the second, cartographic modeling techniques are being...
R. L. Smith, J.H. Duff
1988, Applied and Environmental Microbiology (54) 1071-1078
Denitrification was assayed by the acetylene blockage technique in slurried core material obtained from a freshwater sand and gravel aquifer. The aquifer, which has been contaminated with treated sewage for more than 50 years, had a contaminant plume greater than 3.5-km long. Near the contaminant source, groundwater nitrate concentrations were...
Alan H. Welch, Michael S. Lico, Jennifer L. Hughes
1988, Groundwater (26) 333-347
Natural occurrences of ground water with moderate (10 to 50 micrograms per liter) to high (greater than 50 micrograms per liter) concentrations of arsenic are common throughout much of the Western United States. High concentrations of arsenic are generally associated with one of four geochemical environments: (1) basin-fill deposits of...
P.A. Bisson, K. Sullivan, J.L. Nielsen
1988, Transactions of the American Fisheries Society (117) 262-273
Habitat use by juvenile coho salmon Oncorhynchus kisutch, steelhead Salmo gairdneri, and the coastal subspecies of cutthroat trout Salmo clarki clarki in small streams in western Washington was influenced by hydraulic characteristics of different types of channel units. Coho salmon preferred pools with average velocities less than 20 cm/s; very few fish were found...