Effects of chronic exposure to simazine on the cladoceran, Daphnia pulex
K. M. Fitzmayer, J. G. Geiger, Michael J. Van Den Avyle
1982, Archives of Environmental Contamination and Toxicology (11) 603-609
The effects of chronic exposure to simazine, an s-triazine herbicide, on the cladoceranDaphnia pulex were evaluated under laboratory conditions. The daphnids were exposed to simazine concentrations corresponding to previously calculated 48-hr LC5 and LC20 values and the effects on survival, growth, reproduction, and behavior were monitored daily for 26 days. Survival...
Organic matter in a coal ball: Peat or coal?
Patrick G. Hatcher, P.C. Lyons, C.L. Thompson, F. W. Brown, G.E. Maciel
1982, Science (217) 831-833
Chemical analyses of morphologically preserved organic matter in a Carboniferous coal ball reveal that the material is coalified to a rank approximately equal to that of the surrounding coal. Hence, the plant tissues in the coal ball were chemically altered by coalification processes and were not preserved as peat. ...
Magmatic resurgence in Long Valley caldera, California: Possible cause of the 1980 Mammoth Lakes earthquakes
J.C. Savage, M. M. Clark
1982, Science (217) 531-533
Changes in elevation between 1975 and October 1980 along a leveling line across the Long Valley caldera indicate a broad (half-width, 15 kilometers) uplift (maximum, 0.25 meter) centered on the old resurgent dome. This uplift is consistent with reinflation of a magma reservoir at a depth of about 10 kilometers....
Earth Science Information System (ESIS)
Water Resources Division, U.S. Geological Survey
1982, Report
The Earth Science Information System (ESIS) was developed in 1981 by the U.S. Geological Survey's Office of the Data Administrator. ESIS serves as a comprehensive data management facility designed to support the coordination, integration, and standardization of scientific, technical, and bibliographic data of the U.S. Geological Survey (USGS). ESIS provides,...
An evaluation of a microprocessor based remote image processing system for analysis and display of cartographic data
David D. Greenlee, Harvey L. Wagner
1982, Conference Paper, Proceedings of the international symposium on computer-assisted cartography
No abstract available....
Fish culture: an annotated bibliography of publications of the National Fisheries Center, Leetown, 1972-1980
Joyce A. Mann, Violet J. Catrow, Lora C. McKenzie, Faye V. Engle
1982, Report
This is an annotated bibliography of the publications authored or co-authored by the staff of the National Fisheries Center - Leetown (NFC-L) from 1972 through 1980. It includes publications from NFC-L staff at the Fish Farming Experimental Station, Stuttgart, AR; the Fish Genetics Laboratory, Beulah, WY; the Hagerman Field...
Capture-recapture and removal methods for sampling closed populations
Gary C. White, David R. Anderson, Kenneth P. Burnham, David L. Otis
1982, Report
The problem of estimating animal abundance is common in wildlife management and environmental impact asessment. Capture-recapture and removal methods are often used to estimate population size. Statistical Inference From Capture Data On Closed Animal Populations, a monograph by Otis et al. (1978), provides a comprehensive synthesis of much of the...
Activity and prey selection in the sea otter: Influence of population status on community structure
James A. Estes, Ronald J. Jameson, E. B. Rhode
1982, American Naturalist (120) 242-258
No abstract available....
Gravity and magnetic investigations of the National Petroleum Reserve in Alaska
S.I. Gutman, A. Goldstein, E.C. Guldenzopf
1982, Report
No abstract available....
The application of the Physical Habitat Simulation System to natural resources management
Robert T. Milhous
1982, Book, Proceedings: 1982 Summer Computer Simulation Conference, Denver
No abstract available....
Assessing effects of organophosphates on songbirds: Comparison of a captive and a free-living population
Christian E. Grue, G.V.N. Powell, C.H. Gorsuch
1982, Journal of Wildlife Management (46) 766-768
No abstract available. ...
Responses of Siberian ferrets to secondary zinc phosphide poisoning
Elwood F. Hill, James W. Carpenter
1982, Journal of Wildlife Management (46) 678-685
The hazard of operational-type applications of zinc phosphide (Zn3P2) on a species closely related to the black-footed ferret (Mustela nigripes), was evaluated by feeding 16 Siberian ferrets (M. eversmanni) rats that had been killed by consumption of 2% zinc phosphide treated bait or by an oral dose of 40, 80,...
Survival of juvenile black ducks during brood rearing
James K. Ringelman, Jerry R. Longcore
1982, Journal of Wildlife Management (46) 622-628
Duckling survival among broods reared by 8 radio-marked and 28 unmarked black ducks (Anas rubripes) was studied in Maine during 1977-80. The mean class III brood size of 5.26 yielded an apparent survival rate of 0.6152 from hatching to fledging. However, by using the method described by Mayfield (1961, 1975),...
An analysis of howling response parameters useful for wolf pack censusing
Fred H. Harrington, L. David Mech
1982, Journal of Wildlife Management (46) 686-693
Gray wolves (Canis lupus) were studied from April-1972 through April 1974 in the Superior National Forest in northeastern Minnesota by radio-tracking and simulated howling. Based on replies during 217 of 456 howling sessions, the following recommendations were derived for using simulated howling as a census technique: (1) the best times...
Movements and wetland selection by brood-rearing black ducks
James K. Ringelman, Jerry R. Longcore
1982, Journal of Wildlife Management (46) 615-621
Movements and wetland selection by brood-rearing black ducks (Anas rubripes) were studied in Maine during 1977-80. Eight radio-marked hens moved their broods an average of 1.2 km from the nest to rearing pond, but only 1 hen initiated secondary brood movements. Half of the 85 broods reared in the study...
Sedimentation and deformation in the Amlia Fracture Zone sector of the Aleutian Trench
D.W. Scholl, T.L. Vallier, A.J. Stevenson
1982, Marine Geology (48) 105-134
A wedge-shaped, landward thickening mass of sedimentary deposits composed chiefly of terrigenous turbidite beds underlies the west-south west-trending Amlia sector (172°20′–173°30′W) of the Aleutian Trench. Pacific oceanic crust dips northward beneath the sector's sedimentary wedge and obliquely underthrusts (30° off normal) the adjacent Aleutian Ridge. The trench floor and subsurface...
Wilderness permit accuracy: differences between reported and actual use
David J. Parsons, Thomas J. Stohlgren, James M. Kraushaar
1982, Environmental Management (6) 329-335
Wilderness permits are valuable tools for recording backcountry use patterns. They provide a valuable basis upon which management decisions are made. Unfortunately, significant inaccuracies in reporting permit data result from noncompliance, transmission errors, and changes in visitor plans. Data from Sequoia and Kings Canyon National Parks in California show that...
A simple demonstration of the relationship between classification and canonical variates analysis
Byron K. Williams
1982, American Statistician (36) 363-365
No abstract available....
Reoccurrence of caribou in Minnesota
L. David Mech, Michael E. Nelson, H. F. Drabik
1982, American Midland Naturalist (108) 206-208
At least two caribou (Rangifer tarandus) were observed in Cook Co. of northeastern Minnesota from October 1980 through April 1981. This is the first record of caribou in the area since 1924. The nearest records of this species were 224 km NE of the present sightings, and the closest known...
Perched water tables on hillsides in western Oregon: II. Preferential downslope movement of water and anions
D.P. Hammermeister, G.F. Kling, J.A. Vomocil
1982, Soil Science Society of America Journal (46) 819-826
Perched water tables on hillsides in western Oregon potentially provide a means by which pollutants from agricultural and domestic sources may enter surface waters and consequently degrade the quality of these waters. This paper reports the results of experiments which were carried out to investigate the flow of solutes and...
Effects of an aquatic plant and suspended clay on the activity of fish toxicants
P.A. Gilderhus
1982, North American Journal of Fisheries Management (2) 301-306
Rotenone, antimycin, permethrin, pydrin, and Salicylanilide I were tested for their toxicities against fathead minnows (Pimephales promelas) in the presence of Canadian waterweed (Elodea canadensis) or suspended clay. The plants had little effect on the activity of rotenone and antimycin but substantially reduced the activity of permethrin and pydrin (synthetic...
Heat capacities and entropies of Mg2SiOa, Mn2SiOa, and Co2SiOa between 5 and 380 K
Richard A. Robie, Bruch S. Hemingway, Humihiko Takei
1982, American Mineralogist (67) 470-482
The heat capacities of synthetic single crystats of Mg2Sio4 (forsterite), Mn2Sioa (tephroite), and co2Sioa (cobalt olivine), were measured between 5 and 3g0 K using an adiabatically shieldedc alorimeter. Mg2SiOais diamagnetic,a nd its heat capacity follows a normal sigmoidal curve at low temperatures. co2sioa shows a single sharp )r-type transition at 49.85+0102...
Characterization of organic contaminants in environmental samples associated with Mount St. Helens 1980 volcanic eruption
Wilfred E. Pereira, Colleen E. Rostad, Howard E. Taylor, John M. Klein
1982, Environmental Science and Technology (16) 387-396
Volcanic ash, surface-water, and bottom-material samples obtained in the vicinity of Mount St. Helens after the May 18, 1980, eruption were analyzed for organic contaminants by using capillary gas chromatography-mass spectrometry-computer techniques. Classes of compounds identified include n-alkanes, fatty acids, dicarboxylic acids, aromatic acids and aldehydes, phenols, resin acids, terpenes,...
Perched water tables on hillsides in western Oregon: I. Some factors affecting their development and longevity
D.P. Hammermeister, G.F. Kling, J.A. Vomocil
1982, Soil Science Society of America Journal (46) 811-818
Perched water tables on hillsides located on the western border of the Willamette Valley in Oregon in some cases have the potential to transport pollutants from either domestic or agricultural sources downslope to streams, ponds, or reservoirs, resulting in the deterioration of the quality of these waters. In this paper,...
Age constraints on the proposed Plio-Pleistocene boundary stratotype at Vrica, Italy
J. D. Obradovich, C. W. Naeser, G. A. Izett, G. Pasini, G. Bigazzi
1982, Nature (298) 55-59
Estimates1–4 of the age of the stratotype Plio–Pleistocene boundary in Italy range from 1.65 to 2.5 Myr. We aim here to clarify this dating confusion, and we present new radiometric data on ashes from the proposed stratotype section, Vrica, Italy which indicate that the Plio–Pleistocene boundary must be...
