Minimum tailwater flows in relation to habitat suitability and sport-fish harvest
K.E. Jacobs, W.D. Swink, J.F. Novotny
1987, North American Journal of Fisheries Management (7) 569-574
The instream flow needs of four sport fishes (rainbow trout Salmo gairdneri, channel catfish Ictalurus punctatus, smallmouth bass Micropterus dolomieui, and white crappie Pomoxis annularis) were evaluated in the tailwater below Green River Lake, Kentucky. The Newcombe method, a simple procedure developed in British Columbia that is based on the...
Toxicity of TFM lampricide to early life stages of walleye
J.G. Seelye
1987, North American Journal of Fisheries Management (7) 598-601
We studied the effects of the lampricide 3-trifluoromethyl-4-nitrophenol (TFM) on gametes, newly fertilized eggs, eyed eggs, larvae, and swim-up fry of the walleye Stizostedion vitreum. When gametes from sexually mature walleyes were stripped into solutions of TFM, no effects were observed during the fertilization process at concentrations up to 3.0...
Geomys bursars burrowing patterns: influence of season and food patch structure
Douglas C. Andersen
1987, Ecology (68) 1306-1318
The relationship between belowground food resources and the pattern and pace of soil excavation by Geomys bursarius, the plains pocket gopher, was assessed during spring and autumn using replicated 18 x 18 m enclosures containing uniform arrays of food plants (Daucus carota) at spacings assumed to result in burrowing being...
Dinosaurs, spherules, and the “magic” layer: A new K-T boundary clay site in Wyoming
B.F. Bohor, Don M. Triplehorn, Douglas J. Nichols, Hugh T. Millard Jr.
1987, Geology (15) 896-899
A new Cretaceous-Tertiary (K-T) boundary clay site has been found along Dogie Creek in Wyoming in the drainage of Lance Creek—the type area of the Lance Formation of latest Cretaceous age. The boundary clay was discovered in the uppermost part of the Lance Formation, 4–7 cm beneath the lowest lignite...
Chemistry of hydrothermal solutions from the southern Juan de Fuca Ridge
Karen L. Von Damm, James L. Bischoff
1987, Journal of Geophysical Research B: Solid Earth (92) 11334-11346
Fluids from three vent fields on the southern Juan de Fuca Ridge were sampled in September 1984 using the DSRV Alvin. The fluids are uniquely high in both chloride, which ranges up to twice the seawater value, and in metal content. Simple vapor-liquid phase separation could not have produced both...
Microbial infections in a declining wild turkey population in Texas
Tonie E. Rocke, Thomas M. Yuill
1987, Journal of Wildlife Management (51) 778-782
A survey was conducted at 5 locations in Texas for avian pathogens that might adversely affect wild turkey (Meleagris gallopavo) productivity and survival. At 1 site, the Rob and Bessie Welder Wildlife Refuge (WWR), turkeys have declined precipitously in recent years. During the winters of 1983-85, 442 wild turkeys were...
Morphometric variability within the axial zone of the southern Juan de Fuca Ridge: Interpretation from Sea MARC II, Sea MARC I, and deep-sea photography
Ellen S. Kappel, William R. Normark
1987, Journal of Geophysical Research B: Solid Earth (92) 11291-11302
The morphometric characteristics of the axial regions of oceanic spreading centers are determined by (1) the type of volcanic flows, (2) the relation between primary volcanic relief (on a scale of a few meters to tens of meters) and degree of sediment cover, and (3) the extent of surficial expression...
Sources of variation in survival and recovery rates of American black ducks
David G. Krementz, Michael J. Conroy, James E. Hines, H. Franklin Percival
1987, Journal of Wildlife Management (51) 689-700
Band recovery data from 10 preseason and 10 winter populations of the American black duck (Anas rubripes) were analyzed and survival and recovery rates estimated. Adults showed higher survival rates and lower recovery rates than 1st-year birds. Higher harvest rates of juveniles probably explain much of the age-related mortality differential,...
A decoy trap for breeding-season mallards in North Dakota
David E. Sharp, John T. Lokemoen
1987, Journal of Wildlife Management (51) 711-715
A modified decoy trap was effective for capturing wild adult male and female mallards (Anas platyrhynchos) during the 1980-81 breeding seasons in North Dakota. Key features contributing to the trap's success included a central decoy cylinder, large capture compartments with spring-door openings, an adjustable trigger mechanism with a balanced door...
Taphonomy and paleoecology of nonmarine Mollusca; indicators of alluvial plain lacustrine sedimentation, upper part of the Tongue River Member, Fort Union Formation (Paleocene), northern Powder River basin, Wyoming and Montana
John H. Hanley, Romeo M. Flores
1987, Palaios (2) 479-496
No abstract available. ...
Selective transport of hydrocarbons in the unsaturated zone due to aqueous and vapor phase partitioning
Arthur L. Baehr
1987, Water Resources Research (23) 1926-1938
Long-term groundwater contamination can result from vapors and solutes emanating from organic liquids spilled in the unsaturated zone. The mathematical modeling analysis presented in this paper demonstrates for gasoline-range hydrocarbons, and other volatile organics commonly spilled, that diffusive transport in the unsaturated zone is a significant transport mechanism which can...
Survival of young American alligators on a Florida lake
Allan R. Woodward, Tommy C. Hines, C.L. Abercrombie, James D. Nichols
1987, Journal of Wildlife Management (51) 931-937
A capture-recapture study was conducted on Orange Lake, Florida, from 1979 through 1984 to estimate survival rates of young in an American alligator (Alligator mississippiensis) populations. Hatchlings remained together in sibling groups (pods) for at least their 1st year and then began to disperse during their 2nd spring and summer....
Effects of winter fasting and refeeding on white-tailed deer blood profiles
Glenn D. DelGiudice, L. David Mech, Ulysses S. Seal, Patrick D. Karns
1987, Journal of Wildlife Management (51) 865-873
This study examined the effects of dietary protein, fasting, and refeeding on blood characteristics of 9 nonpregnant, female white-tailed deer (Odocoileus virginianus) in captivity from 23 February to 3 May 1984. Percent weight loss was greater in fasted deer than in deer fed diets of 2 crude protein levels. Fasting...
Winter fasting and refeeding effects on urine characteristics in white-tailed deer
Glenn D. DelGiudice, L. David Mech, Ulysses S. Seal, Patrick D. Karns
1987, Journal of Wildlife Management (51) 860-864
The effects of dietary protein, fasting, and refeeding on urinary characteristics of 9 captive, female white-tailed deer (Odocoileus virginianus) were studied from 23 February to 3 May 1984. Urinary sodium (na) and potassium (K) were diminished in fasted deer after 2 and 4 weeks. Renal excretion of Na and K...
Survival and band recovery rates of sympatric American black ducks and mallards
James D. Nichols, Holliday H. Obrecht III, James E. Hines
1987, Journal of Wildlife Management (51) 700-710
Banding and recovery data from American black ducks (Anas rubripes) and mallards (A. platyrhynchos) banded in the same breeding or wintering areas over the same time periods were used to estimate annual survival and band recovery rates. Recovery rates, based on preseason bandings, were very similar for sympatric black ducks...
Ice core links CO2 to climate
E.T. Sundquist
1987, Nature (329) 389-390
No abstract available. ...
Structure of the southern Juan de Fuca Ridge from seismic reflection records
Janet L. Morton, Norman H. Sleep, William R. Normark, Donald H. Tompkins
1987, Journal of Geophysical Research B: Solid Earth (92) 11315-11326
Twenty-four-channel seismic reflection records were obtained from the axial region of the southern Juan de Fuca Ridge. Two profiles are normal to the strike of the spreading center and intersect the ridge at latitude 44°40′N and 45°05′N; a third profile extends south along the ridge axis from latitude 45°20′N and...
Discussion of "Volatilization rates of organic chemicals of public health concern"
R.E. Rathburn, D. Y. Tai
1987, Journal of Environmental Engineering (113) 1171-1173
No abstract available....
FORFLO: A model to predict changes in bottomland hardwood forests
Michael S. Brody, Edward Pendleton
1987, Report
Hydrology and water quality of a wetland used to receive wastewater effluent, St. Joseph, Minnesota
J. R. Stark, R. G. Brown
1987, Conference Paper
No abstract available....
Movement and fate of crude-oil in contaminants in the subsurface environment at Bemidji, Minnesota: Chapter C in U.S. Geological Survey program on toxic waste--ground-water contamination: Proceedings of the Third technical meeting, Pensacola, Florida, March 23-27, 1987
Marc F. Hult
1987, Open-File Report 87-109-C
On August 20, 1979, a pipeline break in a remote area near Bemidji, Minn. (fig. C-l), resulted in the release of 1.5x105 L (liters) of crude oil. Although about 1.1x105 L were removed from the site as part of the cleanup, some crude oil infiltrated the ground and percolated to the...
Dinosaurs on the North Slope, Alaska: High latitude, latest cretaceous environments
E. M. Brouwers, W.A. Clemens, R.A. Spicer, T. A. Ager, L. D. Carter, W.V. Sliter
1987, Science (237) 1608-1610
Abundant skeletal remains demonstrate that lambeosaurine hadrosaurid, tyrannosaurid, and troodontid dinosaurs lived on the Alaskan North Slope during late Campanian—early Maestrichtian time (about 66 to 76 million years ago) in a deltaic environment dominated by herbaceous vegetation. The high ground terrestrial plant community was a mild- to cold-temperate forest composed...
Occurrence of a predicted earthquake on the San Andreas fault
M. Wyss, Robert O. Burford
1987, Nature (329) 323-325
In May 1985 we predicted1 that an earthquake would occur on the San Andreas fault near Stone Canyon, California within a year. The prediction was based on the observation of seismic quiescence–defined as a significant decrease in the average occurrence rate of earthquakes within the source volume of the future mainshock....
Tectonics and conductivity structures in the Southern Washington Cascades
William D. Stanley, Carol A. Finn, Joseph L. Plesha
1987, Journal of Geophysical Research B: Solid Earth (92) 10179-10193
The tectonic setting of the southern Washington Cascades has been studied with the aid of magnetotelluric (MT) and other geophysical data. The main feature of interest in the geophysical data is a broad high-conductivity anomaly mapped with MT and geomagnetic variation (GMV) data. This anomaly is located roughly within the...
Evidence from gravity data for an intrusive complex beneath Mount St. Helens
David L. Williams, Gerda Abrams, Carol A. Finn, Daniel Dzurisin, Daniel J. Johnson, Roger P. Denlinger
1987, Journal of Geophysical Research B: Solid Earth (92) 10207-10222
On the basis of gravity data, aided by aeromagnetic, magnetotelluric, side-looking radar, and geologic information, we tentatively identify a large, shallow intrusive complex beneath Mount St. Helens. The complex is roughly 5–6 km thick and has apparently intruded a buried and compressed Mesozoic forearc sedimentary sequence. The lateral extent of...
