Concentrated nesting of mallards and gadwalls on Miller Lake Island, North Dakota
Harold F. Duebbert, John T. Lokemoen, David E. Sharp
1983, Journal of Wildlife Management (47) 729-740
Island-nesting mallards (Anas platyrhynchos) and gadwalls (A. strepera) were studied on a 4.5-ha island in 385-ha Miller Lake in northwestern North Dakota during 1976-80. During the 5-year study, 2,561 duck nests of 9 species were found on Island A located 180 m offshore; 59% were mallard and 34% were gadwall....
Parathion alters incubation behavior of laughing gulls
Donald H. White, C. A. Mitchell, E. F. Hill
1983, Bulletin of Environmental Contamination and Toxicology (31) 93-97
One member of each pair of incubating laughing gulls at 9 nests was trapped, orally dosed with either 6 mg/kg parathion in corn oil or corn oil alone, and marked about the neck with red dye. Each nest was marked with a numbered stake and the treatment was recorded. A...
Solubility of crude oil in methane as a function of pressure and temperature
Leigh C. Price, L.M. Wenger, T. Ging, C.W. Blount
1983, Organic Geochemistry (4) 201-221
The solubility of a 44° API (0.806 sp. gr.) whole crude oil has been measured in methane with water present at temperatures of 50 to 250°C and pressures of 740 to 14,852 psi, as have the solubilities of two high molecular weight petroleum distillation fractions at temperatures of 50 to...
The acute oral toxicity, repellency, and hazard potential of 998 chemicals to one or more species of wild and domestic birds
E. W. Schafer Jr., W. A. Bowles Jr., J. Hurlbut
1983, Archives of Environmental Contamination and Toxicology (12) 355-382
The acute oral toxicity, repellency, and hazard potential of 998 chemicals to one or more of 68 species of wild and domestic birds was determined by standardized testing procedures. Red winged blackbirds were the most sensitive of the bird species tested on a large number of chemicals, and an index...
Latest Oligocene through early middle Miocene diatom biostratigraphy of the eastern tropical Pacific
John A. Barron
1983, Marine Micropaleontology (7) 487-515
Study of DSDP Sites 71, 77, and 495 has allowed the development of a refined diatom biostratigraphy for the latest Oligocene through early middle Miocene of the eastern tropical Pacific which is well correlated to the low-latitude zonations for planktonic foraminifers, coccoliths, and radiolarians. Six zones and 7 subzones are...
Nutritional value of the aril of Trichilia cuneata, a bird-dispersed fruit
Mercedes S. Foster, Roy W. McDiarmid
1983, Biotropica (15) 26-31
Fruits of Trichilia cuneata (Meliaceae), a common tree in drier forests of Central America, are eaten by a number of birds. The fruits are 10 to 12 mm in diameter, covered by a yellowish-brown, capsular exocarp, and contain three to six seeds...
Groundwater observation network design for the Kansas groundwater management districts, U.S.A.
M. Sophocleous
1983, Journal of Hydrology (61) 371-389
Concerns about the efficiency and economic soundness of the Kansas groundwater monitoring program led to a systematic redesign of this network, a tentative phase of which is presented in this study. The objectives of this paper include monitoring of major aquifers within each groundwater management district at a spatially more...
A system for measuring bottom profile, waves and currents in the high-energy nearshore environment
Asbury H. Sallenger Jr., P.C. Howard, C.H. Fletcher III, P.A. Howd
1983, Marine Geology (51) 63-76
A new data-acquisition system capable of measuring waves, currents and the nearshore profile in breaking waves as high as 5 m has been developed and successfully field-tested. Components of the mechanical system are a sled carrying a vertical mast, a double-drum winch placed landward of the beach, and a line...
Wandering terranes in southern Alaska: The Aleutia Microplate and implications for the Bering Sea
Michael S. Marlow, Alan K. Cooper
1983, Journal of Geophysical Research B: Solid Earth (88) 3439-3446
Paleomagnetic and geological data suggest that much of southern Alaska is a collage of tectonostratigraphic terranes which originated in Mesozoic time at paleolatitudes far south of their present position. The time of ‘docking’ of the terranes against cratonic Alaska is critical to defining their amalgamated size and extent during their...
Lead accumulation and depression of δ-aminolevulinic acid dehydratase (ALAD) in young birds fed automotive waste oil
W. C. Eastin Jr., David J. Hoffman, C. T. O’Leary
1983, Archives of Environmental Contamination and Toxicology (12) 31-35
The effects of a 3-week dietary exposure to automotive waste crankcase oil (WCO) were examined in 1-week-old mallard (Anas platyrhynchos) ducklings and pheasant (Phasianus colchicus) chicks. Treatment groups consisted of birds exposed to 0.5, 1.5, or 4.5% WCO, to 4.5% clean crankcase oil (CCO), or untreated controls. In both species,...
Eruptive history of Mount Mazama and Crater Lake Caldera, Cascade Range, U.S.A.
C. R. Bacon
1983, Journal of Volcanology and Geothermal Research (18) 57-115
New investigations of the geology of Crater Lake National Park necessitate a reinterpretation of the eruptive history of Mount Mazama and of the formation of Crater Lake caldera. Mount Mazama consisted of a glaciated complex of overlapping shields and stratovolcanoes, each of which was probably active for a comparatively short...
The 1979 Homestead Valley earthquake sequence, California: Control of aftershocks and postseismic deformation
R.S. Stein, M. Lisowski
1983, Journal of Geophysical Research Solid Earth (88) 6477-6490
The coseismic slip and geometry of the March 15, 1979, Homestead Valley, California, earthquake sequence are well constrained by precise horizontal and vertical geodetic observations and by data from a dense local seismic network. These observations indicate 0.52±0.10 m of right-lateral slip and 0.17±0.04 m of reverse slip on a...
Laboratory investigations of steam flow in a porous medium
W.N. Herkelrath, A.F. Moench, II C. F. O’Neal C. F.
1983, Water Resources Research (19) 931-937
Experiments were carried out in the laboratory to test a theory of transient flow of pure steam in a uniform porous medium. This theory is used in modeling pressure transient behavior in vapor dominated geothermal systems. Transient, superheated steam flow experiments were run by bringing a cylinder of porous material...
A reconnaissance geochemical study of La Primavera geothermal area, Jalisco, Mexico
G.A. Mahood, A.H. Truesdell, M.L.A. Templos
1983, Journal of Volcanology and Geothermal Research (16) 247-261
The Sierra La Primavera, a late Pleistocene rhyolitic caldera complex in Jalisco, Me??xico, contains fumaroles and large-discharge 65??C hot springs that are associated with faults related to caldera collapse and to later magma insurgence. The nearly-neutral, sodium bicarbonate, hot springs occur at low elevations at the margins of the complex,...
Approximate sampling distribution of the serial correlation coefficient for small samples
Gary D. Tasker
1983, Water Resources Research (19) 579-582
The probability density function for the sample serial correlation coefficient r can be approximated byf(r) = (β(½, ½(T + 1)))−1(1 − r2)½(T− 1)(1+ c2 − 2cr)−½(T), whereβ is the Beta function, T= n− 2, c = ρ − [(1 + ρ)/(n − 3)], n is the number of observations, and ρ is the population lag one serial correlation. This distribution is derived from...
Scoresum - A technique for displaying and evaluating multi-element geochemical information, with examples of its use in regional mineral assessment programs
M.A. Chaffee
1983, Journal of Geochemical Exploration (19) 361-381
A technique called SCORESUM was developed to display a maximum of multi-element geochemical information on a minimum number of maps for mineral assessment purposes. The technique can be done manually for a small analytical data set or can be done with a computer for a large data set. SCORESUM...
Sm-Nd age and isotopic systematics of the bimodal suite, ancient gneiss complex, Swaziland
R. W. Carlson, D.R. Hunter, F. Barker
1983, Nature (305) 701-704
Studies of the development and stabilization of the Archaean crust often focus on the relative temporal relationships between the metamorphosed basaltic to ultramafic volcanic units (greenstone belts) and the sialic gneiss terrains that make up the oldest sections of the terrestrial crust. At the heart of this interest are the...
Objective procedures for lineament enhancement and extraction
G. K. Moore, F. A. Waltz
1983, Photogrammetric Engineering and Remote Sensing (49) 641-647
A longterm research goal at EROS Data Center is to develop automated, objective procedures for lineament mapping. In support of this goal, a five-step digital convolution procedure has been used to produce directionally enhanced images, which contain few artifacts and little noise. The main limitation of this procedure is that...
Late Holocene ice wedges near Fairbanks, Alaska, USA: Environmental setting and history of growth
T. D. Hamilton, T. A. Ager, S.W. Robinson
1983, Arctic and Alpine Research (15) 157-168
Test trenches excavated into muskeg near Fairbanks in 1969 exposed a polygonal network of active ice wedges. The wedges occur in peat that has accumulated since about 3500 yr BP and have grown episodically as the permafrost table fluctuated in response to fires, other local site conditions and perhaps regional...
An isolated population of small Canada geese on Kaliktagik Island, Alaska
Scott A. Hatch, Martha A. Hatch
1983, Wildfowl (34) 130-136
Recently we discovered that a small form of the Canada Goose Branta canadensis breeds on Kaliktagik Island, one of the Semidi Islands, about 80 km south of the Alaska Peninsula near longitude 157°W (Figure 1). The unexpected occurrence of geese on this oceanic island and the possibility that they are...
Observations of emperor geese feeding at Nelson Lagoon, Alaska
Margaret R. Petersen
1983, The Condor (85) 367-368
Estuaries along the north side of the Alaska Peninsula provide essential habitat for most of the American population of Emperor Goose (Chen canagica) during migration (Petersen and Gill 1982). Most of the population passes through Nelson Lagoon in spring and fall, with over 40,000 birds recorded there (Gill et al...
Populations and habitat use of marine birds in the Semidi Islands, Alaska
Scott A. Hatch, Martha A. Hatch
1983, Murrelet (64) 39-46
About one-quarter of the resident seabirds in the Gulf of Alaska breed on the Semidi Islands. In terms of biomass, the proportion is closer to one-third. The most abundant birds are Common and Thick-billed Murres, with a combined population exceeding 1 million birds. Hundreds of thousands of Horned Puffins breed...
Complexation of copper by aquatic humic substances from different environments
Diane M. McKnight, Gerald L. Feder, E. Michael Thurman, Robert L. Wershaw
1983, Science of the Total Environment (28) 65-76
The copper-complexing properties of aquatic humic substances isolated from eighteen different environments were characterized by potentiometric titration, using a cupric ion selective electrode. Potentiometric data were analyzed using FITEQL, a computer program for the determination of chemical equilibrium constants from experimental data. All the aquatic humic substances could be modelled...
Nestling growth relationships of brown-headed cowbirds and dickcissels
Scott A. Hatch
1983, The Wilson Bulletin (95) 669-671
Data on nestling growth of brood parasites and their hosts are surprisingly few in the literature, Even the Brown-headed Cowbird (Molothrus ater), whose host relations have been studied in some other respects, has not been studied in any detail from this standpoint. This is particularly regrettable because the lack of...
Distribution of differentiated tholeiitic basalts on the lower east rift zone of Kilauea Volcano, Hawaii: A possible guide to geothermal exploration
R. B. Moore
1983, Geology (11) 136-140
Geologic mapping of the lower east rift zone of Kilauea Volcano, Hawaii, indicates that more than 100 eruptions have extruded an estimated 10 km3 of basalt during the past 2,000 yr. Six eruptions in the past 200 yr have extruded about 1 km3. The...
