Correspondence between vegetation and soils in wetlands and nearby uplands
Michael L. Scott, William L. Slauson, Charles A. Segelquist, Gregor T. Auble
1989, Wetlands (9) 41-60
The association between vegetation and soils from a geographically broad sampling of wetlands and adjoining uplands is reported for 38 hydric and 26 nonhydric soils, as recognized in the hydric soils list of the Soil Conservation Service. Wetlands represented in the study include estuaries, pitcher plant bogs, prairie depressional wetlands,...
Acid precipitation studies in Colorado and Wyoming: interim report of surveys of montane amphibians and water chemistry
Paul Stephen Corn, William Stolzenburg, R. Bruce Bury
1989, Report
Acid deposition may be detrimental or stressful to native populations of wildlife. Because many species of amphibians breed in shallow ponds created by spring rains or melting snow, they may be particularly vulnerable to the effects of acidification. From 1986 to 1988, we surveyed 105 locations in the...
Reptiles on highways in north-central Alabama, USA
C. Kenneth Dodd Jr., Kevin M. Enge, James N. Stuart
1989, Journal of Herpetology (23) 197-200
No abstract available....
Postfledging survival of European starlings
David G. Krementz, James D. Nichols, James E. Hines
1989, Ecology (70) 646-655
We tested the hypotheses that mass at fledging and fledge date within the breeding season affect postfledging survival in European Starlings (Sturnus vulgaris). Nestlings were weighed on day 18 after hatch and tagged with individually identifiable patagial tags. Fledge date was recorded. Marked fledglings were resighted during weekly two—day intensive...
Stream temperature investigations: field and analytic methods
J.M. Bartholow
1989, Report
This document provides guidance to the user of the U.S. Fish and Wildlife Service’s Stream Network Temperature Model (SNTEMP). Planning a temperature study is discussed in terms of understanding the management objectives and ensuring that the questions will be accurately answered with the modeling approach being used. A sensitivity analysis of...
An exact anelastic model for the free-surface reflection of P and S-I waves
Roger D. Borcherdt, G. Glassmoyer
1989, Bulletin of the Seismological Society of America (79) 842-859
Exact anelastic solutions incorporating inhomogeneous waves are used to model numerically S-I and P waves incident on the free surface of a low-loss anelastic half-space. Anelastic free-surface reflection coefficients are computed for the volumetric strain and displacement components of inhomogeneous wave fields. For the problem of an incident homogeneous S-I wave in Pierre shale,...
Screening of ground water samples for volatile organic compounds using a portable gas chromatograph
Robert C. Buchmiller
1989, Ground Water Monitoring Review (9) 126-130
A portable gas chromatograph was used to screen 32 ground water samples for volatile organic compounds. Seven screened samples were positive; four of the seven samples had volatile organic substances identified by second-column confirmation. Four of the seven positive, screened samples also tested positive in laboratory analyses of duplicate samples....
Estimating water‐table altitudes for regional ground‐water flow modeling, U.S. Gulf Coast
T.A. Williams, A. K. Williamson
1989, Groundwater (27) 333-340
Water‐table altitude, a controlling factor for ground‐ water flow, was estimated from detailed topographic data by subtracting the estimated depth‐to‐water. Land‐surface altitude of the Coastal Plain in the south‐central United States varies from 0 to more than 800 feet above sea level. Predevelopment depth‐to‐water in 6,825 wells less than 150 feet deep...
Three years operational use of satellite transmitters on Florida manatees: tag improvements based on challenges from the field
J.P. Reid, T. J. O'Shea
1989, Book, Proceedings of the 1989 North American Argos Users Conference
No abstract available....
Hydrothermal discharge zones beneath massive sulfide deposits mapped in the Oman ophiolite
R.M. Haymon, Randolph A. Koski, M. J. Abrams
1989, Geology (17) 531-535
The area in the Oman ophiolite containing the volcanic-hosted Bayda and Aarja massive sulfide deposits exposes a cross section of ocean crust and reveals to an unprecedented extent the fossil zones of hydrothermal upwelling that fed these sea-floor deposits. The fossil discharge zones are elongate areas of alteration and mineralization...
Geochemistry and occurrence of selenium: An overview
James M. McNeal, Laurie S. Balistrieri
1989, Book chapter, Selenium in agriculture and the environment
Selenium (Se) is both beneficial and toxic to animals, plants, and humans. Consequently, it is imperative to know its concentration in the environment and to understand the processes controlling its distribution. Determinations of Se concentrations in a variety of materials indicate that Se is widely distributed throughout the environment. The...
The case for planetary sample return missions
James L. Gooding, M. H. Carr, Christopher P McKay
1989, Eos, Transactions, American Geophysical Union (70) 745-755
The essential role of planetary sample studies in exploration of the solar system has been well established “Drake et al., 1987”. As part of the larger pursuit of comparative planetology, samples of other rocky planets (Mercury, Venus, Mars), planetary satellites, asteroids, and comets should reveal much about the materials and...
Efficacy of benzocaine as an anesthetic for salmonid fishes
P.A. Gilderhus
1989, North American Journal of Fisheries Management (9) 150-153
Benzocaine was tested in the laboratory to determine the effective concentrations for anesthetizing juvenile chinook salmon Oncorhynchus tshawytscha and rainbow trout O. mykiss (formerly Salmo gairdneri). Tests were conducted at three water temperatures, in waters ranging from very soft to very hard, and with groups of rainbow trout from 5 to 47 cm long and...
Copper deficiency in Tule Elk at Point Reyes, California
Peter J.P. Gogan, David A. Jessup, Mark Akeson
1989, Journal of Range Management (42) 233-238
Tule elk (Cervus elaphus nannodes) reintroduced to Point Reyes, Calif., in 1978 exhibited gross signs of copper deficiency by June 1979. Copper levels in liver (x=5.9 ppm) and serum (0.42 ppm) of elk in Point Reyes were below levels in adult tule elk from other locations in California (liver,...
Application of the Graphic Correlation method to Pliocene marine sequences
H.J. Dowsett
1989, Marine Micropaleontology (14) 3-32
Biostratigraphy — the use of paleontological evidence to establish relative chronologies, forms the cornerstone of many sedimentary geological investigations. Several different approaches to biochronology are available. Traditional interval zones, defined on lowest and/or highest occurrences of selected taxa, are used...
Genetic differentiation among lake trout strains stocked into Lake Ontario
C.C. Krueger, J.E. Marsden, H. L. Kincaid, B. May
1989, Transactions of the American Fisheries Society (118) 317-330
The lake trout Salvelinus namaycush is the focus of an international effort by fishery management agencies to restore this once‐native species to Lake Ontario. Evaluation of reproductive success and comparisons among stocked lake trout strains require genetic markers. We used allozyme variation to make genetic comparisons among strains of lake trout stocked...
Crustal studies using magnetic data
Richard J. Blakely, G. Connard
1989, GSA Memoirs (172) 45-60
The magnetic method plays an important role in mineral, petroleum, and geothermal exploration. It also has made important contributions to geologic mapping, structural geology, and plate-tectonic theory. In particular, magnetic measurements using aircraft provide a relatively inexpensive way to trace magnetic rock units beneath covered areas, to reveal the shape...
Isostatic residual gravity and crustal geology of the United States
Robert C. Jachens, Robert W. Simpson, Richard J. Blakely, Richard W. Saltus
1989, GSA Memoirs (172) 405-424
A new isostatic residual gravity map of the conterminous United States presents continent-wide gravity data in a form that can be readily used, with geologic information and other geophysical data, in studies of the composition and structure of the continental crust. This map was produced from the gridded gravity data...
Regression models for estimating urban storm-runoff quality and quantity in the United States
N. E. Driver, B.M. Troutman
1989, Journal of Hydrology (109) 221-236
Urban planners and managers need information about the local quantity of precipitation and the quality and quantity of storm runoff if they are to plan adequately for the effects of storm runoff from urban areas. As result of this need, linear regression models were developed for the estimation of storm-runoff...
Dynamics of liquefaction during the 1987 Superstition Hills, California, earthquake
T.L. Holzer, T. L. Youd, Thomas C. Hanks
1989, Science (244) 56-59
Simultaneous measurements of seismically induced pore-water pressure changes and surface and subsurface accelerations at a site undergoing liquefaction caused by the Superstition Hills, California, earthquake (24 November 1987; M = 6.6) reveal that total pore pressures approached lithostatic conditions, but, unexpectedly, after most of the strong motion ceased. Excess pore pressures were...
Impaired reproduction of mallards fed an organic form of selenium
Gary H. Heinz, David J. Hoffman, Lyn G. Gold
1989, Journal of Wildlife Management (53) 418-428
We fed mallards (Anas platyrhynchos) diets supplemented with 0-, 1-, 2-, 4-, 8-, or 16-ppm selenium in the form of selenomethionine. We fed another group of mallards a diet containing 16-ppm selenium as selenocystine. Females fed the control diet produced a mean of 8.1 ducklings that survived to 6 days...
Mallard survival from local to immature stage in southwestern Saskatchewan
Jay B. Hestbeck, Alexander Dzubin, J. Bernard Gollop, James D. Nichols
1989, Journal of Wildlife Management (53) 428-431
We used 3,670 recoveries from 32,647 bandings of mallards (Anas platyrhynchos) in southwestern Saskatchewan during 1956-59 to estimate the probability of surviving from the local, flightless (classes II and III) stage to the flighted, immature stage. The probability of surviving from the local to the immature stage was 0.84 ±...
Physiological assessment of deer populations by analysis of urine in snow
Glenn D. DelGiudice, L. David Mech, Ulysses S. Seal
1989, Journal of Wildlife Management (53) 284-291
We compared the nutritional status of free-ranging white-tailed deer (Odocoileus virginianus) in 3 natural yards and 1 yard where deer were supplementally fed from 1 January to 31 March 1985 in northeastern Minnesota. We monitored deer nutritonal status by sequential collection and chemical analysis of urine in snow (snow-urine) for...
Evolution of the western part of the Coast plutonic–metamorphic complex, South-Eastern Alaska, USA: A summary
David A. Brew, A. B. Ford, G. R. Himmelberg
1989, Geological Society Special Publication (43) 447-452
The western Cordillera of North America extends for over 6000 km from the tip of Baja California to the Alaska Range. It includes a wide variety of metamorphic and plutonic terrains, but none is more spectacular scenically or geologically than the Coast plutonic-metamorphic complex (Brew & Ford 1984) of...
Leopard frog and wood frog reproduction in Colorado and Wyoming
Paul Stephen Corn, Lauren J. Livo
1989, Northwestern Naturalist (70) 1-9
Between 1978 and 1988, we recorded reproductive information from populations of ranid frogs in Colorado and Wyoming. Egg masses from five plains and montane populations of northern leopard frogs (Rana pipiens) contained 645-6272 eggs (x̄ = 3045, N = 68 egg masses). In two montane populations of wood frogs (Rana...
