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Page 697, results 17401 - 17425

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Conditions and processes affecting radionuclide transport
Ardyth M. Simmons, Leonid A. Neymark
2012, GSA Memoirs (209) 277-362
Characteristics of host rocks, secondary minerals, and fluids would affect the transport of radionuclides from a previously proposed repository at Yucca Mountain, Nevada. Minerals in the Yucca Mountain tuffs that are important for retarding radionuclides include clinoptilolite and mordenite (zeolites), clay minerals, and iron and manganese oxides and hydroxides. Water...
Stable water isotopologue ratios in fog and cloud droplets of liquid clouds are not size-dependent
J.K. Spiegel, F. Aemisegger, M. Scholl, F.G. Wienhold, J.L. Collett Jr., T. Lee, D. van Pinxteren, S. Mertes, A. Tilgner, H. Herrmann, Roland A. Werner, N. Buchmann, W. Eugster
2012, Atmospheric Chemistry and Physics (12) 9855-9863
In this work, we present the first observations of stable water isotopologue ratios in cloud droplets of different sizes collected simultaneously. We address the question whether the isotope ratio of droplets in a liquid cloud varies as a function of droplet size. Samples were collected from a ground intercepted cloud...
The paleohydrology of unsaturated and saturated zones at Yucca Mountain, Nevada, and vicinity
James B. Paces, Joseph F. Whelan
John S. Stuckless, editor(s)
2012, Book chapter, Hydrology and geochemistry of Yucca Mountain and vicinity, Southern Nevada and California
Surface, unsaturated-zone, and saturated-zone hydrologic conditions at Yucca Mountain responded to past climate variations and are at least partly preserved by sediment, fossil, and mineral records. Characterizing past hydrologic conditions in surface and subsurface environments helps to constrain hydrologic responses expected under future climate conditions and improve predictions of repository...
The role of efflorescent sulfate salts in Indiana’s mine water quality
Jeane Pope, E.R. Bayless, G. Olyphant, T. Branam
John B. Comer, editor(s)
2012, Book chapter, Effects of abandoned mine land reclamation on ground and surface water quality: Research and case histories from Indiana
Efflorescent sulfate salts (ESS), which form from evaporating acid mine drainage and occur in a wide variety of environments, can significantly alter water quality and are, therefore, important considerations for remediation strategies at coal refuse sites. Many ESS, including melanterite, rozenite, siderotil, copiapite, halotrichite, coquimbite, epsomite, potash alum, and gypsum,...
Thermal infrared remote sensing of water temperature in riverine landscapes
Rebecca N. Handcock, Christian E. Torgersen, Keith A. Cherkauer, Alan R. Gillespie, Tockner Klement, Russell N. Faux, Jing Tan
Patrice E. Carbonneau, Hervé Piégay, editor(s)
2012, Book chapter, Fluvial remote sensing for science and management
Water temperature in riverine landscapes is an important regional indicator of water quality that is influenced by both ground- and surface-water inputs, and indirectly by land use in the surrounding watershed (Brown and Krygier, 1970; Beschta et al., 1987; Chen et al., 1998; Poole and Berman, 2001).Coldwater fishes such as...
Timing of wet snow avalanche activity: An analysis from Glacier National Park, Montana, USA.
Erich H. Peitzsch, Jordy Hendrikx, Daniel B. Fagre
2012, Conference Paper, Proceedings, 2012 International Snow Science Workshop
Wet snow avalanches pose a problem for annual spring road opening operations along the Going-to-the-Sun Road (GTSR) in Glacier National Park, Montana, USA. A suite of meteorological metrics and snow observations has been used to forecast for wet slab and glide avalanche activity. However, the timing of spring wet slab...
Groundwater and surface-water exchange and resultingnNitrate dynamics in the Bogue Phalia Basin in northwestern Mississippi
Jeannie R. B. Barlow, Richard H. Coupe
2012, Journal of Environmental Quality (41) 155-169
During April 2007 through September 2008, the USGS collected hydrogeologic and water-quality data from a site on the Bogue Phalia to evaluate the role of groundwater and surface-water interaction on the transport of nitrate to the shallow sand and gravel aquifer underlying the Mississippi Alluvial Plain in northwestern Mississippi. A...
Maximizing the utility of monitoring to the adaptive management of natural resources
William L. Kendall, Clinton T. Moore
Robert A. Gitzen, Andrew B. Cooper, Joshua J. Millspaugh, Daniel S. Licht, editor(s)
2012, Book chapter, Design and analysis of long-term ecological monitoring studies
Data collection is an important step in any investigation about the structure or processes related to a natural system. In a purely scientific investigation (experiments, quasi-experiments, observational studies), data collection is part of the scientific method, preceded by the identification of hypotheses and the design of any manipulations of the...
Mercury cycling in terrestrial watersheds
James B. Shanley, Kevin Bishop
Michael S. Banks, editor(s)
2012, Book chapter, Mercury in the environment: Pattern and process
This chapter discusses mercury cycling in the terrestrial landscape, including inputs from the atmosphere, accumulation in soils and vegetation, outputs in streamflow and volatilization, and effects of land disturbance. Mercury mobility in the terrestrial landscape is strongly controlled by organic matter. About 90% of the atmospheric mercury input is retained...
Scientific basis for safely shutting in the Macondo Well after the April 20, 2010 Deepwater Horizon blowout
Stephen H. Hickman, Paul A. Hsieh, Walter D. Mooney, Catherine B. Enomoto, Philip H. Nelson, Larry Mayer, Peter Flemings, Kathryn Moran, Thomas S. Weber, Marcia K. McNutt
James R. Rice, editor(s)
2012, PNAS (109) 20268-20273
As part of the government response to the Deepwater Horizon blowout, a Well Integrity Team evaluated the geologic hazards of shutting in the Macondo Well at the seafloor and determined the conditions under which it could safely be undertaken. Of particular concern was the possibility that, under the anticipated high...
Lake sturgeon population attributes and reproductive structure in the Namakan Reservoir, Minnesota and Ontario
S. L. Shaw, Steven R. Chipps, Steve K. Windels, M.A.H. Webb, D. T. McLeod, D.W. Willis
2012, Journal of Applied Ichthyology (28) 168-175
Quantified were the age, growth, mortality and reproductive structure of lake sturgeon (Acipenser fulvescens) collected in the US and Canadian waters of the Namakan Reservoir. The hypotheses were tested that (i) age and growth of lake sturgeon in the Namakan Reservoir would differ by sex and reproductive stage of maturity,...
Expert knowledge as a foundation for the management of secretive species and their habitat
C. Ashton Drew, Jaime Collazo
2012, Book chapter, Expert knowledge and its application in landscape ecology
In this chapter, we share lessons learned during the elicitation and application of expert knowledge in the form of a belief network model for the habitat of a waterbird, the King Rail (Rallus elegans). A belief network is a statistical framework used to graphically represent and evaluate hypothesized...
Native rainbow smelt and nonnative alewife distribution related to temperature and light gradients in Lake Champlain
Donna L. Parrish, Paul W. Simonin, Lars G. Rudstam, Patrick J. Sullivan, Bernard Pientka
2012, Journal of Great Lakes Research (38) 115-122
Alewife (Alosa pseudoharengus) recently became established in Lake Champlain and may compete with native rainbow smelt (Osmerus mordax) for food or consume larval rainbow smelt. The strength of this effect depends partly on the spatial and temporal overlap of different age groups of the two species; therefore, we need a...
Power analysis and trend detection for water quality monitoring data. An application for the Greater Yellowstone Inventory and Monitoring Network
Kathryn M. Irvine, Kezia Manlove, Cynthia Hollimon
2012, Natural Resource Report NPS/GRYN/NRR-2012/556
An important consideration for long term monitoring programs is determining the required sampling effort to detect trends in specific ecological indicators of interest. To enhance the Greater Yellowstone Inventory and Monitoring Network’s water resources protocol(s) (O’Ney 2006 and O’Ney et al. 2009 [under review]), we developed a set of tools...
Freshwater to seawater transitions in migratory fishes
Joseph D. Zydlewski, Michael P. Wilkie
2012, Book chapter, Fish Physiology
The transition from freshwater to seawater is integral to the life history of many fishes. Diverse migratory fishes express anadromous, catadromous, and amphidromous life histories, while others make incomplete transits between freshwater and seawater. The physiological mechanisms of osmoregulation are widely conserved among phylogenetically diverse species. Diadromous fishes moving between...
Assessment of two nonnative poeciliid fishes for monitoring selenium exposure in the endangered desert pupfish
Michael K. Saiki, Barbara A. Martin, Thomas W. May, William G. Brumbaugh
2012, Water, Air, & Soil Pollution (223) 1671-1683
We assessed the suitability of two nonnative poeciliid fishes—western mosquitofish (Gambusia affinis) and sailfin mollies (Poecilia latipinna)—for monitoring selenium exposure in desert pupfish (Cyprinodon macularius). Our investigation was prompted by a need to avoid lethal take of an endangered species (pupfish) when sampling fish...
Available benthic habitat type may influence predation risk in larval lampreys
Dustin M. Smith, Stuart A. Welsh, Philip J. Turk
2012, Ecology of Freshwater Fish (21) 160-163
Population declines of lamprey species have largely been attributed to habitat degradation, yet there still remain many unanswered questions about the relationships between lampreys and their habitats (Torgensen & Close 2004; Smith et al. 2011). One...