Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16746
Bufo alvarius Girard, 1859: Colorado River toad Bufo alvarius Girard, 1859: Colorado River toad
No abstract available.
Authors
M.J. Fouquette, C.W. Painter, P. Nanjappa
Mineral of the month: tin Mineral of the month: tin
Tin was one of the first metals discovered by humans and, like most metals, tin is rarely used by itself. Most tin is used as a protective coating or as an alloy with other metals in a diverse range of commercial and defense applications.
Authors
James F. Carlin
Mineral of the month: potash Mineral of the month: potash
In 1807, Sir Humphrey Davy discovered a metal during the electrolysis of potassium hydroxide; he named the metal potassium because it came from potash recovered from wood ashes. The four types of potash are the water-soluble compounds potassium chloride, potassium sulfate, potassium-magnesium sulfate and potassium nitrate. The early uses of potash were in glass and soap manufacturing, as...
Authors
James P. Searls
Exploration Exploration
The worldwide budget for nonferrous, nonfuel mineral exploration was expected to increase by 58 percent in 2004 from the 2003 budget, according to Metals Economics Group (MEG) of Halifax, Nova Scotia. The increase comes two years after a five-year period of declining spending for mineral exploration (1998 to 2002). Figures suggest a subsequent 27 percent increase in budgeted expenditures...
Authors
D.R. Wilburn
Book review: Shorebirds of North America: the photographic guide Book review: Shorebirds of North America: the photographic guide
As stated in the preface of this new guide, shorebirds are among our most engaging birds. Their ecology and behavior are the subjects of numerous ornithological studies, their identification can challenge the skills of the most serious birdwatchers, and people with a casual interest in birds are captivated by the antics of Sanderlings (Calidris alba) chasing waves along a beach. While...
Authors
Bruce G. Peterjohn
An objective method to determine an area's relative significance for avian conservation An objective method to determine an area's relative significance for avian conservation
Land managers are often concerned with providing habitat affords the 'best habitat for songbirds.' However, unless management simply is directed at rare species it may not be clear which habitats or management options are best. A standard, quantifiable measure to compare the significance of different tracts of land or competing management techniques for avian conservation would benefit...
Authors
D.J. Twedt
Secondary sulfate minerals associated with acid drainage in the eastern US: Recycling of metals and acidity in surficial environments Secondary sulfate minerals associated with acid drainage in the eastern US: Recycling of metals and acidity in surficial environments
Weathering of metal-sulfide minerals produces suites of variably soluble efflorescent sulfate salts at a number of localities in the eastern United States. The salts, which are present on mine wastes, tailings piles, and outcrops, include minerals that incorporate heavy metals in solid solution, primarily the highly soluble members of the melanterite, rozenite, epsomite, halotrichite...
Authors
J. M. Hammarstrom, R.R. Seal, A. L. Meier, J.M. Kornfeld
Mercury concentrations in water from an unconfined aquifer system, New Jersey coastal plain Mercury concentrations in water from an unconfined aquifer system, New Jersey coastal plain
Concentrations of total mercury (Hg) from 2 μg/L (the USEPA maximum contaminant level) to 72 μg/L in water from about 600 domestic wells in residential parts of eight counties in southern New Jersey have been reported by State and county agencies. The wells draw water from the areally extensive (7770 km2) unconfined Kirkwood–Cohansey aquifer system, in which background concentrations of...
Authors
J. L. Barringer, Zoltan Szabo, L. J. Kauffman, T. H. Barringer, P. E. Stackelberg, T. Ivahnenko, S. Rajagopalan, D. P. Krabbenhoft
Geochemistry and jasper beds from the Ordovician Løkken ophiolite, Norway: origin of proximal and distal siliceous exhalites Geochemistry and jasper beds from the Ordovician Løkken ophiolite, Norway: origin of proximal and distal siliceous exhalites
Stratiform beds of jasper (hematitic chert), composed essentially of SiO2 (69–95 wt %) and Fe2O3 (3–25 wt %), can be traced several kilometers along strike in the Ordovician Løkken ophiolite, Norway. These siliceous beds are closely associated with volcanogenic massive sulfide (VMS) deposits and are interpreted as sea-floor gels that were deposited by fallout from hydrothermal plumes in...
Authors
Tor Grenne, John F. Slack
Net alkalinity and net acidity 2: Practical considerations Net alkalinity and net acidity 2: Practical considerations
The pH, alkalinity, and acidity of mine drainage and associated waters can be misinterpreted because of the chemical instability of samples and possible misunderstandings of standard analytical method results. Synthetic and field samples of mine drainage having various initial pH values and concentrations of dissolved metals and alkalinity were titrated by several methods, and the...
Authors
C.S. Kirby, C.A. Cravotta
USGS bird and land-cover data: Regional bird conservation internet mapping tool takes flight with GIS USGS bird and land-cover data: Regional bird conservation internet mapping tool takes flight with GIS
No abstract available.
Authors
J.C. Nelson, M.G. Fox, M. G. Knutson, J.R. Sauer, W.E. Thogmartin
Home range and survival of breeding painted buntings on Sapelo Island, Georgia Home range and survival of breeding painted buntings on Sapelo Island, Georgia
The southeastern United States population of the painted bunting (Passerina ciris) has decreased approximately 75% from 1966–1996 based on Breeding Bird Survey trends. Partners in Flight guidelines recommend painted bunting conservation as a high priority with a need for management by state and federal agencies. Basic information on home range and survival of breeding painted buntings...
Authors
E. G. Springborn, J. Michael Meyers