United States Geological Survey Yearbook, fiscal year 1980
Water Resources Division, U.S. Geological Survey
1981, Report
It is not very often that a single event is so overwhelming that it changes public perceptions of natural hazards for generations. Perhaps for the U.S. Geological Survey, the explosive volcanic activity of Mount St. Helens began such a change. After 101 years of careful science of the Earth's past...
Residues of isobornyl thiocyanoacetate (Thanite) and a metabolite in fish and treated ponds
J. L. Allen, J.B. Sills, V. K. Dawson, R.T. Amel
1981, Journal of Agricultural and Food Chemistry (29) 634-636
Isobornyl thiocyanoacetate (Thanite) is an insecticide that induces a surfacing response in fish and therefore has been considered to have potential as a fish collection agent. Analyses for residues of Thanite in carp (Cyprinus carpio) and largemouth bass (Micropterus salmoides) exposed to chemical yielded only a trace of the parent...
Studying the Earth from space
Water Resources Division, U.S. Geological Survey
1981, Report
Space age technology contains a key to increased knowledge about the Earth's resources; this key is remote sensing detecting the nature or condition of something without actually touching it. An early and still most useful form of remote sensing is photography which records the scene, as man sees it, on film...
"Duck stamp" dollars reserve native prairie tracts
K.F. Higgins
1981, Rangelands (3) 190-191
Ducks and wetlands are inseparable in the prairies. Hunters know this, bird watchers know this, wildlife managers know this, and most importantly people who manage the croplands and rangelands know this. The 1,746 tracts of native prairie within these upland-wetland complexes known as Waterfowl Production Areas are not the only...
Improved methods for national water assessment, water resources contract: WR15249270
Harold A. Thomas Jr.
1981, Report
The purpose of our research is to develop methods to make National Water Assessment more useful in estimating water availability for economic growth and more helpful in determining the effect of water resource development upon the environmental quality of related land resources. There are serious questions pertaining to the 1975...
Earth fissures and localized differential subsidence
Thomas L. Holzer, Earl H. Pampeyan
1981, Water Resources Research (17) 223-227
Long linear tension cracks associated with declining groundwater levels at four sites in subsiding areas in south-central Arizona, Fremont Valley, California, and Las Vegas Valley, Nevada, occur near points of maximum convex-upward curvature in subsidence profiles oriented perpendicular to the cracks. Profiles are based on repeated precise vertical control surveys...
Gray bats and pollution in Missouri and northern Alabama
D. R. Clark Jr., C.M. Bunck, E. Cromartie, R. K. LaVal, M.D. Tuttle
1981, Bat Research News (22) 35-36(abs)
Gray bats died with lethal brain concentrations of dieldrin and rising levels of heptachlor epoxide in 1976, 1977, and 1978 at Bat Caves No. 2-3, Franklin County, Missouri. The colony disappeared in 1979. Dieldrin was banned in 1974 and 1981 was the last year for heptachlor use in Missouri. The...
Organochlorine concentrations in bald eagles: Brain/body lipid relations and hazard evaluation
K.R. Barbehenn, W. L. Reichel
1981, Journal of Toxicology and Environmental Health (8) 325-330
Residue levels of 12 organochlorine compounds found In the brains of bald eagles can be predicted from the corresponding concentrations in the carcass when expressed on a hexane‐extractable lipid basis. The compounds varied by a factor of about 3 in the degree to which they accumulated In the brain. An...
Eustrongylides and pesticide levels in a great blue heron shot in Wisconsin
R. M. Windingstad, D. M. Swineford
1981, Prairie Naturalist (13) 161-162
The parasitic roundworm, Eustrongylides ignotus Jagersk, has been known to cause mortality and morbidity in members of the heron family in the eastern states of North America. To date no previous records exist for this nematode in Wisconsin. Even though eustrongylidiosis was first detected in the District of Columbia in...
Heavy metals in mammals from two unmined copper-zinc deposits in Wisconsin
G. J. Smith, O.J. Rongstad
1981, Bulletin of Environmental Contamination and Toxicology (27) 28-33
No abstract available....
Using captive propagation to help save the Puerto Rican parrot
J. W. Wiley, G.F. Gee
1981, AFA Watchbird (8) 4, 6-11
Plasma corticosterone and thyroxine concentrations during chronic ingestion of crude oil in mallard ducks (Anas platyrhynchos)
Barnett A. Rattner, W. C. Eastin Jr.
1981, Comparative Biochemistry and Physiology, Part C: Comparative Pharmacology (68) 103-107
1. Blood samples were collected from mallard ducks after 6, 12, and 18 weeks of dietary exposure to mash containing 0.015%, 0.150%, and 1.500% crude oil.2. Plasma corticosterone concentrations in ducks fed mash containing 0.150% or 1.500% Alaskan Prudhoe Bay crude oil were uniformly depressed when compared to values in...
Asiatic clam (Corbicula manilensis) and other foods used by waterfowl in the James River, Virginia
Matthew C. Perry, F.M. Uhler
1981, Estuaries (4) 229-233
Corbicula manilensis was found in the gizzards of 24 ducks of 5 species taken from the James River, Virginia, between 1973 and 1976. Percent average volume in these species ranged from trace to 6%. This is the first known occurrence of this exotic clam in the food of duck in Chesapeake...
Whale sharks associated with fish schools off south Texas
W. Hoffman, T. H. Fritts, R.P. Reynolds
1981, Northeast Gulf Science (5) 55-57
No abstract available. ...
Thirty-third winter bird-population study. 5. Upland tulip-tree--maple--oak forest
C.S. Robbins
1981, American Birds (35) 23
Forty-fourth breeding bird census. 10. Upland tulip-tree--maple--oak forest
C.S. Robbins
1981, American Birds (35) 52
The structure of western warbler assemblages: Analysis of foraging behavior and habitat selection in Oregon
Michael L. Morrison
1981, The Auk (98) 578-588
This study examines the foraging behavior and habitat selection of a MacGillivray's (Oporornis tolmiei)-Orange-crowned (Vermivora celata)-Wilson's (Wilsonia pusilla) warbler assemblage that occurred on early-growth clearcuts in western Oregon during breeding. Sites were divided into two groups based on the presence or absence of deciduous trees. Density estimates for each species...
Avian surveys of large geographical areas: A systematic approach
J. M. Scott, J.D. Jacobi, F. L. Ramsey
1981, Wildlife Society Bulletin (9) 190-200
A multidisciplinary team approach was used to simultaneously map the distribution of birds, selected food items, and major vegetation types in 34,000- to 140,000-ha tracts in native Hawaiian forests. By using a team approach, large savings in time can be realized over attempts to conduct similar surveys of smaller scope,...
Tolerance of adult mallards to subacute ingestion of crude petroleum oil
Barnett A. Rattner
1981, Toxicology Letters (8) 337-342
Adult male mallards were fed untreated mash or mash containing 1.5% Prudhoe Bay crude oil for 7 days ad lib. During the initial 24 h of exposure to crude petroleum oil, ducks consumed less mash (P less than 0.05) and lost approx. 3.5% of their initial body weight (P less...
Effects of lead shot ingestion on delta-aminolevulinic acid dehydratase activity, hemoglobin concentration, and serum chemistry in bald eagles
D. J. Hoffman, O. H. Pattee, Stanley N. Wiemeyer, B. Mulhern
1981, Journal of Wildlife Diseases (17) 423-431
Lead shot ingestion by bald eagles (Haliaeetus leucocephalus) is considered to be widespread and has been implicated in the death of eagles in nature. It was recently demonstrated under experimental conditions that ingestion of as few as 10 lead shot resulted in death...
The Mayfield method of estimating nesting success: A model, estimators and simulation results
Gary L. Hensler, J.D. Nichols
1981, The Wilson Bulletin (93) 42-53
Using a nesting model proposed by Mayfield we show that the estimator he proposes is a maximum likelihood estimator (m.l.e.). M.l.e. theory allows us to calculate the asymptotic distribution of this estimator, and we propose an estimator of the asymptotic variance. Using these estimators we give approximate confidence...
A review of bufflehead sex and age criteria with notes on weights
Charles J. Henny, J.L. Carter, Barbara J. Carter
1981, Wildfowl (32) 117-122
Summary: Buftleheads Bucephala albeola were collected along the Oregon coast during the hunting season. Birds were first sexed and aged upon cloacal and internal characteristics. Results were then compared with data derived from wing plumage. A small change was made in Carney's (1964) wing plumage key...
Acute toxicities of toxaphene and endrin to larvae of seven species of amphibians
R.J. Hall, D. M. Swineford
1981, Toxicology Letters (8) 331-336
Seven species of amphibian larvae were exposed to toxaphene and endrin in a continuous-flow dosing system to determine differences in sensitivity to the two compounds, EC50 and LC50 estimates varied from those for Rana sphenocephala by no more than one order of magnitude when calculated on the basis of intended...
The effects of ingested petroleum on the maphthalene-metabolizing properties of the liver tissue in seawater-adapted mallard ducks (Anas platyrhynchos)
J. Gorsline, W. N. Holmes, J. Cronshaw
1981, Environmental Research (24) 377-390
Hepatic mixed function oxidase activities were estimated in seawater-adapted mallard ducks (Anas platyrhynchos) that had been consuming food contaminated with one of five different types of crude oil. After 50 days of exposure to contaminated food, enzyme activities of liver microsomal preparations were assessed in terms of their naphthalenemetabolizing properties...
Iatrogenic salt poisoning in captive sandhill cranes
J. C. Franson, L. Sileo, W. James Fleming
1981, Journal of the American Veterinary Medical Association (179) 1211-1213
Salt poisoning developed in captive sandhill cranes (Grus canadensis) when sea salt was added to normal drinking water to produce a sodium chloride concentration of 1%. Two of 18 cranes died and 2 were euthanatized when moribund. Muscle weakness, paresis, dyspnea, and depression were observed. Brain and serum sodium, serum...
