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...
Ferroan anorthosite from lunar breccia 64435: Implications for the origin and history of lunar ferroan anorthosites
O.B. James, M.M. Lindstrom, M.K. Flohr
1989, Conference Paper
A composite clast of ferroan-anorthosite-suite rocks from lunar breccia 64435 is shown to contain three lithologies. The results suggest that the structures of the 64435 composite clast were produced in an early deformation that consisted of extensive granulation followed by pervasive recrystallization, and that some granulitic breccias are nearly monomict....
Geochemical evidence for suppression of pelagic marine productivity at the Cretaceous/Tertiary boundary
James Zachos, M.A. Arthur, Walter E. Dean
1989, Nature (337) 61-64
The normal, biologically productive ocean is characterized by a gradient of the 13C/12C ratio from surface to deep waters. Here we present stable isotope data from planktonic and benthic micro-fossils across the Cretaceous/Tertiary boundary in the North pacific, which reveal a rapid and complete breakdown in this biologically mediated gradient. The...
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...
Physical habitat simulation and sedimentation
Robert T. Milhous
1989, Book, Proceedings of the Symposium Sediment and the Environment, the Third Scientific Assembly of the International Association of Hydrological Sciences
No abstract available....
Regionwide polygyny in willow flycatchers
James A. Sedgwick, Fritz L. Knopf
1989, The Condor (91) 473-475
Most species of North American flycatchers (Tyranidae) are believed to be normally monogamous (Skutch 1960, Verner and Willson 1969). Some instances of bigamy are known for the Eastern Phoebe (Sayornis phoebe; Sherman 1952), Eastern Wood-Pewee (Contopus virens; W. J. Smith, cited in Eckhardt 1976), Western Wood-Pewee (C. sordidulus; Eckhardt...
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,...
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...
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...
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...
Hydraulics in physical habitat simulation: a 1989 review
Robert T. Milhous
1989, Book, Proceedings of the Ninth Annual AGU Front Range Branch Hydrology Days
No abstract available....
Origin of granulite terranes and the formation of the lowermost continental crust
S.R. Bohlen, K. Mezger
1989, Science (244) 326-329
Differences in composition and pressures of equilibration between exposed, regional granulite terranes and suites of granulite xenoliths of crustal origin indicate that granulite terranes do not represent exhumed lowermost crust, as had been thought, but rather middle and lower-middle crustal levels. Application of well-calibrated barometers indicate that exposed granulites record...
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...
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 ±...
