Dietary variation in sea otters
J. A. Estes
1986, Bulletin 1
No abstract available at this time...
Yellow-bellied marmots and vehicle damage in Mineral King, Sequoia and Kings Canyon National Parks, California
R.C. Helm, C. Schonewald-Cox
1986, Technical Report 23
No abstract available at this time...
Mapping nuclear craters on Enewetak Atoll, Marshall Islands
John C. Hampson
1986, Conference Paper, Proceedings International Symposium on Marine Positioning
In 1984, the U.S. Geological Survey conducted a detailed geologic analysis of two nuclear test craters at Enewetak Atoll, Marshall Islands, on behalf of the Defense Nuclear Agency. A multidisciplinary task force mapped the morphology, surface character, and subsurface structure of two craters, OAK and KOA. The field mapping techniques include...
The determination of carrying capacities for the Yosemite Wilderness
J. W. van Wagtendonk
1986, General Technical Report INT-212
No abstract available at this time...
Management recommendations for improving wildlife habitat degraded by man in the Black Mountains, Death Valley National Monument
C. L. Douglas
1986, Technical Report CPSU/UNLV 006/38
No abstract available at this time...
Vegetation and terrain mapping in Alaska using Landsat MSS and digital terrain data
Mark Shasby, David M. Carneggie
1986, Photogrammetric Engineering and Remote Sensing (52) 779-786
During the past 5 years, the U.S. Geological Survey's (USGS) Earth Resources Observation Systems (EROS) Data Center Field Office in Anchorage, Alaska has worked cooperatively with Federal and State resource management agencies to produce land-cover and terrain maps for 245 million acres of Alaska. The need for current land-cover information...
The origin of fluids in the salt beds of the Delaware Basin, New Mexico and Texas
J. R. O’Neil, C.M. Johnson, L. D. White, E. Roedder
1986, Applied Geochemistry (1) 265-271
Oxygen and hydrogen isotope analyses have been made of (1) brines from several wells in the salt deposits of the Delaware Basin, (2) inclusion fluids in halite crystals from the ERDA No. 9 site, and (3) local ground waters of meteoric...
A united physicochemical description of the protonation and metal ion complexation equilibria of natural organic acids (humic and fulvic acids). 2. Influence of polyelectrolyte properties and functional group heterogeneity on the protonation equilibria of fulvic acid
J. Ephraim, S. Alegret, A. Mathuthu, M. Bicking, Ronald L. Malcolm, J.A. Marinsky
1986, Environmental Science & Technology (20) 354-366
No abstract available....
Regional resource depletion and industry activity: The case of oil and gas in the Gulf of Mexico
E. D. Attanasi
1986, Socio-Economic Planning Sciences (20) 283-289
Stable and declining oil and gas prices have changed the industry's price expectations and, along with depletion of promising exploration prospects, has resulted in reduced exploration. Even with intensive additional exploration, production in most U.S. areas is expected to decline. What does this imply for the drilling and petroleum industry...
Prairie restoration at the National Wildlife Health Laboratory (Wisconsin)
R. M. Windingstad
1986, Restoration & Management Notes (4) 72-72
The National Wildlife Health Laboratory (NWHL), U.S. Fish and Wildlife Service in Madison are in the process of a 7-ha prairie restoration project on their lands to create a microcosmic representation of presettlement Wisconsin. Visiting scientists, personnel from local schools and universities, and neighboring public will eventually be able to...
Inclusion body disease of cranes: Comparison of pathologic findings in cranes with acquired vs. experimentally induced disease
J. C. Schuh, L. Sileo, Lynne M. Siegfried, Thomas M. Yuill
1986, Journal of the American Veterinary Medical Association (189) 993-996
Inclusion body disease of cranes was the cause of death in 17 immature and mature cranes of 5 different species in Wisconsin. A herpesvirus of unknown origin was the apparent cause. An isolate of this herpesvirus was used to experimentally infect 3 species of cranes. Macroscopic and microscopic lesions associated...
Evaluation of gas data from high-temperature fumaroles at Mount St. Helens, 1980-1982
T.M. Gerlach, T. J. Casadevall
1986, Journal of Volcanology and Geothermal Research (28) 107-140
The Mount St. Helens fumarole gases show linear composition trends during periods of noneruptive degassing between September 1980 and October 1981. The trends are characterized by increasing H2O and decreasing CO2 and sulfur. Maximum fumarole temperatures also show a linear decrease during this period. High-temperature fumarole gases collected from the...
Aluminum in hornblende: an empirical igneous geobarometer.
J. M. Hammarstrom, E. Zen
1986, American Mineralogist (71) 1297-1313
Electron-microprobe analyses of hornblendes from five calc-alkaline plutonic complexes representing low- and high-pressure regimes define a tightly clustered linear trend in terms of total Al (AlT) and tetrahedral Al (Aliv) contents. Data collated from the literature on calcic amphiboles from other plutonic complexes and from phase equilibrium experiments using natural...
Identification of solute loading sources to a surface stream
R. L. Rittmaster, D. K. Mueller
1986, Water Resources Bulletin (22) 81-89
A study was performed to identify sources of solute loading to the Dirty Devil River and its major tributaries, in south-eastern Utah. A primary goal was to determine the contribution of gypsum dissolution to total dissolved solids concentration, and its potential increase in the future if salinity control measures are...
Some Techniques for Reducing Landslide Hazards
William J. Kockelman
1986, Bulletin of the Association of Engineering Geologists (23) 29-52
Many techniques are available for reducing landslide hazards; 27 are described in this paper. Prerequisites for the successful use of these techniques are hazard information understandable to nongeologists and adequate communication of this information to those who will, or are required to, use it. It is concluded that certain factors...
The occurrence of Theromyzon rude (Annelida: Hirudinea) in association with mortality of trumpeter swan cygnets (Cygnus buccinator)
Benjamin N. Tuggle
1986, Journal of Wildlife Diseases (22) 279-280
No abstract available....
Potential for nitrosamine formation in seven fishery chemicals
S. L. Abidi, V. K. Dawson, R.C. Hubley Jr.
1986, Progressive Fish-Culturist (48) 301-302
In recent years, nitrosamines have been reported as possible causes of cancer, mutations, or birth defects. Inasmuch as these compounds may be formed by the interaction of certain amines with nitrite in the aquatic environment, we evaluated seven fishery chemicals for their potential to form nitrosamines: the experimental fish toxicant...
Estimation of distributional parameters for censored trace level water quality data: 1. Estimation techniques
Robert J. Gilliom, Dennis R. Helsel
1986, Water Resources Research (22) 135-146
A recurring difficulty encountered in investigations of many metals and organic contaminants in ambient waters is that a substantial portion of water sample concentrations are below limits of detection established by analytical laboratories. Several methods were evaluated for estimating distributional parameters for such censored data sets using only uncensored observations....
Distribution of early life history stages of fishes in selected pools of the upper Mississippi River
L. E. Holland
1986, Hydrobiologia (136) 121-130
Effective management of the fishery resources of the Upper Mississippi River and successful mitigation of the loss of critical habitat depend in part on an understanding of the reproductive and early life history requirements of the affected fishes. However, little is known about the use of...
WETLAND ECOSYSTEM STUDIES FROM A HYDROLOGIC PERSPECTIVE.
James W. LaBaugh
1986, Water Resources Bulletin (22) 1-10
Wetland studies of chemical input-output relationships have been the most dependent on hydrologic data of all wetland investigations; yet, very few of these studies have attempted to measure all components of a wetland's water balance. Usually, unmeasured components were calculated as the difference between measured inputs and outputs. Ground water...
System optimization for the automatic simultaneous determination of arsenic, selenium, and antimony, using hydride generation introduction to an inductively coupled plasma
Grace S. Pyen, Stephen Long, Richard F. Browner
1986, Applied Spectroscopy (40) 246-251
A fixed-size simplex has been used to determine the optimum conditions for the simultaneous determination of arsenic, selenium, and antimony by hydride generation and inductively coupled plasma emission spectrometry. The variables selected for the simplex were carrier gas flow rate, rf power, viewing height, and reagent conditions. The detection limit...
Seismic measurements of the internal properties of fault zones
Walter D. Mooney, A. Ginzburg
1986, Pure and Applied Geophysics PAGEOPH (124) 141-157
The internal properties within and adjacent to fault zones are reviewed, principally on the basis of laboratory, borehole, and seismic refraction and reflection data. The deformation of rocks by faulting ranges from intragrain microcracking to severe alteration. Saturated microcracked and mildly fractured rocks do not exhibit a significant reduction in...
To accrete or not accrete, that is the question
Roland E. von Huene
1986, Geologische Rundschau (75) 1-15
Along modern convergent margins tectonic processes span a spectrum from accretion to erosion. The process of accretion is generally recognized because it leaves a geologic record, whereas the process of erosion is generally hypothetical because it produces a geologic hiatus. Major conditions that determine the dominance of accretion or erosion...
Ecological life histories of the three aquatic nuisance plants, Myriophyllum spicatum, Potamogeton crispus and Elodea canadensis
S. A. Nichols, B.H. Shaw
1986, Hydrobiologia (131) 3-21
The life histories of Myriophyllum spicatum L., Elodea canadensis Michx., and Potamogeton crispus L., serious aquatic nuisances in many regions of the world, are reviewed to provide insights into the life style of successful aquatic nuisance plants. Specifically, their distribution and spread in North America; their life cycle, productive and...
Recent patterns of sulfate variability in pristine streams
H.F. Lins
1986, Atmospheric Environment - Part A General Topics (20) 367-375
Systematic modes of spatial and temporal variation in a 13-y record of stream sulfate from a nationwide network of headwater sampling stations are defined using principal components. Based on the undisturbed nature of the sampling network, it is suggested that these modes of stream sulfate variability are analogues for variations...