Goose counts from aerial photographs using an optical digitizer
D.S. Gilmer, J.A. Brass, L.L. Strong, D.H. Card
1988, Wildlife Society Bulletin (16) 204-206
Abstract has not been submitted...
Liquid-chromatographic determination of rotenone in fish, crayfish, mussels, and sediments
V. K. Dawson, J. L. Allen
1988, Journal of the Association of Official Analytical Chemists (71) 1094-1096
An analytical procedure is described for determining residues of rotenone in fish muscle, fish offal, crayfish, freshwater mussels, and bottom sediments. Tissue samples were extracted with ethyl ether and extracts were cleaned up by gel permeation chromatography and silica gel chromatography. Sediment samples were extracted with methanol, acidified, partitioned into...
Semianalytical computation of path lines for finite-difference models
D.W. Pollock
1988, Ground Water (26) 743-750
A semianalytical particle tracking method was developed for use with velocities generated from block centered finite-difference ground-water flow models. The method is based on the assumption that each directional velocity component varies linearly within a grid cell in its own coordinate directions. This assumption allows...
Fractional-step method for two-dimensional estuarine transport
Jerad D. Bales, Edward R. Holley
1988, Conference Paper
The fractional-step method was used in this study to split the longitudinal advective transport term from the other terms in the two-dimensional, laterally-averaged equation for estuarine mass transport. The method of characteristics with spline interpolations was used to approximate the longitudinal advective transport. A general discussion of the fractional-step method,...
Geochemistry of water at Cajon Pass, California: Preliminary results
Y.K. Kharaka, G. Ambats, William C. Evans, A. F. White
1988, Geophysical Research Letters (15) 1037-1040
Samples of water and associated gases were collected from the Cajon Pass well using downhole samplers, and from the pipe stands at the completion of drill stem tests. The fluids were recovered from fracture systems in granitic rocks from two uncased test intervals located at 1,829...
An outbreak of type E botulism among common loons (Gavia immer) in Michigan's Upper Peninsula
Christopher J. Brand, Stephen Schmitt, Ruth M. Duncan, Thomas M. Cooley
1988, Journal of Wildlife Diseases (24) 471-476
An epizootic of type E botulism (Clostridium botulinum) occurred among common loons (Gavia immer) along the Lake Michigan shore of Michigan's Upper Peninsula (USA) during October and November 1983. An estimated 592 dead loons washed ashore along the Garden Peninsula. Type E botulinal toxin was demonstrated in blood samples and...
Bird damage to sunflower in North Dakota, South Dakota, and Minnesota, 1979-1981
R. L. Hothem, R. W. DeHaven, S.D. Fairaizl
1988, Technical Report 15
No abstract available at this time...
Intermediate-term, pre-earthquake phenomena in California, 1975-1986, and preliminary forecast of seismicity for the next decade
R. L. Wesson, C. Nicholson
1988, Pure and Applied Geophysics PAGEOPH (126) 407-446
Intermediate-term observations preceding earthquakes of magnitude 5.7 or greater in California from 1975 through 1986 suggest that: (1) The sudden appearance of earthquakes in a previously inactive area indicates an increased likelihood of a significant earthquake in that area for a period from days to years; (2) these larger earthquakes...
Increasing waterfowl production on points and islands by reducing mammalian predation
J. T. Lokemoen, R.W. Schnaderbeck, R.O. Woodward
1988, General Technical Report RM-154
Small Mammal Community of Pinnacles National Monument
Gary M. Fellers, Brian W. Arnold
1988, Technical Report 28
No abstract available at this time...
Geologic time
William L. Newman
1988, Report
Colony attendance and population monitoring of Black-legged Kittiwakes on the Semidi Islands, Alaska
Scott A. Hatch, Martha A. Hatch
1988, The Condor (90) 613-620
Patterns of colony attendance in Black-legged Kittiwakes (Rissa tridactyla) were studied over 5 years on the Semidi Islands, western Gulf of Alaska. A census period of 50 days, extending from first egg laying through final hatching, was appropriate because counts made then were subject to the least amount of daily...
Littoral foraging by red phalaropes during spring in the northern Bering Sea
J. Christopher Haney, Amy E. Stone
1988, The Condor (90) 723-726
Phalaropes demonstrate considerable plasticity in their choice of foraging habitats. The Red Phalarope (Phalaropus fulicaria) alternates use of pelagic environments in winter and migration (Taning 1933, Stanford 1953, Briggs et al 1984) with wet tundra habitats during the breeding season (Kistchinski 1975, Mayfield 1979, Ridley 1980). Foods available and taken...
Optimum protease exposure time for removing adhesiveness of walleye eggs
W. F. Krise
1988, Progressive Fish-Culturist (50) 126-127
Increasing concentrations of protease solution reduce the treatment time required for removal of the adhesive layer surrounding eggs of the walleye (Stizostedion vitreum). When concentrations were increased from 0.01 to 0.1%, treatment time decreased from 30 to 5 min; however, treatment with a 1.0% solution for more than 1 min...
Effects of low-level gas supersaturation on lake trout (Salvelinus namaycush)
W. F. Krise, J. W. Meade
1988, Canadian Journal of Fisheries and Aquatic Sciences (45) 666-674
Blue catfish: a report on its potential in commercial fish production
C. Collins
1988, Aquaculture Magazine (14) 81-83
An early in vitro sampling method for fish immunization programs
D. Anderson, O. Dixon
1988, Fish Health Newsletter (16) 5
Immunological distance in fish: I: General perspectives and laboratory methods for stock discrimination
R.C. Simon, W. B. Schill
1988, Fish Culture Section Newsletter (American Fisheries Society) (3) 11-13
Treatment of fish eggs by infection of chemicals into the incubator water supply
P. E. McAllister, G.A. Wilson
1988, Progressive Fish-Culturist (50) 116-117
A system for injecting chemicals into a water supply to treat fish or fish eggs is described. Equations for calculating treatment mixtures and a sample computation are given....
Photosynthesis in quillworts, or why are some aquatic plants similar to cactus?
Jon E. Keeley
1988, Plants Today (1) 127-132
No abstract available at this time...
A protocol for institutional coordination in wildlife conservation
H. Salwasser, C. Schonewald-Cox, R. Baker
M. E. Soule, editor(s)
1988, Book chapter, Viable Populations
No abstract available at this time...
Developing a state water plan: Ground-water conditions in Utah, spring of 1988
Gail E. Cordy, G. J. Smith, D. Michael Roark, Patrick M. Lambert, John A. Yarbrough, Carole B. Burden, R. B. Garrett, D. C. Emett, Susan A. Thiros, G. W. Sandberg, R. W Puchta
1988, Cooperative Investigations Report 28
This is the twenty-fifth in a series of annual reports that describe ground-water conditions in Utah. Reports in this series, published cooperatively by the U.S. Geological Survey and the Utah Division of Water Resources, provide data to enable interested parties to keep abreast of changing ground-water conditions.This report, like the...
Ground-water geochemistry of the Albuquerque-Belen Basin, central New Mexico
S. K. Anderholm
1988, Water-Resources Investigations Report 86-4094
The purpose of this study was to define the areal distribution of different water types, use the distribution to help define the groundwater flow system, and identify processes resulting in differences in groundwater quality in the Albuquerque-Belen Basin in central New Mexico. The chemistry of surface water inflow from adjacent...
High-resolution 40Ar 39Ar chronology of Oligocene volcanic rocks, San Juan Mountains, Colorado
M. A. Lanphere
1988, Geochimica et Cosmochimica Acta (52) 1425-1434
The central San Juan caldera complex consists of seven calderas from which eight major ash-flow tuffs were erupted during a period of intense volcanic activity that lasted for approximately 2 m.y. about 26–28 Ma. The analytical precision of conventional K-Ar dating in this time interval is not sufficient to unambiguously...
Experimental oxygen isotope fractionation between siderite-water and phosphoric acid liberated CO2-siderite
W.W. Carothers, L.H. Adami, R.J. Rosenbauer
1988, Geochimica et Cosmochimica Acta (52) 2445-2450
The equilibrium fractionation of O isotopes between synthetic siderite and water has been measured at temperatures ranging from 33° to 197°C. The fractionation between siderite and water over this temperature range can be represented by the equation: 103 ln α = 3.13 × 106T−2 −...
