Tourmaline as a recorder of ore-forming processes
John F. Slack, Robert B. Trumbull
2011, Elements (7) 321-326
Tourmaline occurs in diverse types of hydrothermal mineral deposits and can be used to constrain the nature and evolution of ore-forming fl uids. Because of its broad range in composition and retention of chemical and isotopic signatures, tourmaline may be the only robust recorder of original mineralizing processes in some...
The effect of structural complexity, prey density, and "predator-free space" on prey survivorship at created oyster reef mesocosms
Austin T. Humphries, Megan La Peyre, Gary A. Decossas
2011, PLoS ONE (6)
Interactions between predators and their prey are influenced by the habitat they occupy. Using created oyster (Crassostrea virginica) reef mesocosms, we conducted a series of laboratory experiments that created structure and manipulated complexity as well as prey density and “predator-free space” to examine the relationship between structural complexity and prey...
USGS "Did You Feel It?" internet-based macroseismic intensity maps
D.J. Wald, V. Quitoriano, B. Worden, M. Hopper, J. W. Dewey
2011, Annals of Geophysics (54) 688-707
The U.S. Geological Survey (USGS) "Did You Feel It?" (DYFI) system is an automated approach for rapidly collecting macroseismic intensity data from Internet users' shaking and damage reports and generating intensity maps immediately following earthquakes; it has been operating for over a decade (1999-2011). DYFI-based intensity maps made rapidly available...
A framework for sea level rise vulnerability assessment for southwest U.S. military installations
B. Chadwick, Reinhard Flick, J. Helly, Tracy Nishikawa, Fang Wang Pei, W. O'Reilly, R. Guza, Peter Bromirski, A. Young, W. Crampton, B. Wild, I. Canner
2011, Conference Paper, OCEANS'11 - MTS/IEEE Kona, Program Book
We describe an analysis framework to determine military installation vulnerabilities under increases in local mean sea level as projected over the next century. The effort is in response to an increasing recognition of potential climate change ramifications for national security and recommendations that DoD conduct assessments of the impact on...
Removal of inorganic mercury and methylmercury from surface waters following coagulation of dissolved organic matter with metal-based salts
Y.K. Henneberry, T.E.C. Kraus, J.A. Fleck, David P. Krabbenhoft, P.M. Bachand, W.R. Horwath
2011, Science of the Total Environment (409) 631-637
The presence of inorganic mercury (IHg) and methylmercury (MeHg) in surface waters is a health concern worldwide. This study assessed the removal potential use of metal-based coagulants as a means to remove both dissolved IHg and MeHg from natural waters and provides information regarding the importance of Hg associations with...
Pseudospectral modeling and dispersion analysis of Rayleigh waves in viscoelastic media
K. Zhang, Y. Luo, J. Xia, C. Chen
2011, Soil Dynamics and Earthquake Engineering (31) 1332-1337
Multichannel Analysis of Surface Waves (MASW) is one of the most widely used techniques in environmental and engineering geophysics to determine shear-wave velocities and dynamic properties, which is based on the elastic layered system theory. Wave propagation in the Earth, however, has been recognized as viscoelastic and the propagation of...
Evidence of shift in C4 species range in central Argentina during the late Holocene
L.C.R. Silva, M.A. Giorgis, M. Anand, L. Enrico, N. Perez-Harguindeguy, V. Falczuk, L.L. Tieszen, M. Cabido
2011, Plant and Soil (349) 261-279
AimMillennial-scale biogeographic changes are well understood in many parts of the world, but little is known about long-term vegetation dynamics in subtropical regions. Here we investigate shifts in C3/C4 plant abundance occurred in central Argentina during the past few millenniaMethodsWe determined present...
Mapping three-dimensional surface deformation by combining multiple-aperture interferometry and conventional interferometry: Application to the June 2007 eruption of Kilauea Volcano, Hawaii
H.-S. Jung, Z. Lu, J.-S. Won, Michael P. Poland, Asta Mikijus
2011, IEEE Geoscience and Remote Sensing Letters (8) 34-38
Surface deformation caused by an intrusion and small eruption during June 17-19, 2007, along the East Rift Zone of Kilauea Volcano, Hawaii, was three-dimensionally reconstructed from radar interferograms acquired by the Advanced Land Observing Satellite (ALOS) phased-array type L-band synthetic aperture radar (SAR) (PALSAR) instrument. To retrieve the 3-D surface...
Survey of stranded gas and delivered costs to Europe of selected gas resources
Emil D. Attanasi, Philip A. Freeman
2011, Conference Paper
Two important trends affecting the expected growth of global gas markets are (1) the shift by many industrialized countries from coal-fired electricity generation to the use of natural gas to generate electricity and (2) the industrialization of the heavily populated Asian countries of India and China. This paper surveys discovered...
Polyphase Neoproterozoic orogenesis within the east Africa- Antarctica orogenic belt in central and northern Madagascar
R. M. Key, P. E. J. Pitfield, Ronald J. Thomas, K. M. Goodenough, D. Waele, D. I. Schofield, W. Bauer, M. S. A. Horstwood, M.T. Styles, J. Conrad, J. Encarnacion, D. J. Lidke, E. A. O’connor, C. Potter, R. A. Smith, G. J. Walsh, A.V. Ralison, T. Randriamananjara, J. M. Rafahatelo, M. Rabarimanana
2011, Geological Society Special Publication (357) 49-68
Our recent geological survey of the basement of central and northern Madagascar allowed us to re-evaluate the evolution of this part of the East Africa-Antarctica Orogen (EAAO). Five crustal domains are recognized, characterized by distinctive lithologies and histories of sedimentation, magmatism, deformation and metamorphism, and separated by tectonic and/or unconformable...
The flow dynamics of an extremely large volume pyroclastic flow, the 2.08-Ma Cerro Galán Ignimbrite, NW Argentina, and comparison with other flow types
Ray A.F. Cas, Heather M. Wright, Christopher B. Folkes, Chiara Lesti, Massimiliano Porreca, Guido Giordano, Jose G. Viramonte
2011, Bulletin of Volcanology (73) 1583-1609
The 2.08-Ma Cerro Galán Ignimbrite (CGI) represents a >630-km3 dense rock equivalent (VEI 8) eruption from the long-lived Cerro Galán magma system (∼6 Ma). It is a crystal-rich (35–60%), pumice (<10% generally) and lithic-poor (<5% generally) rhyodacitic ignimbrite, lacking a preceding plinian fallout deposit. The CGI is preserved up to 80 km...
Ecological strategies in california chaparral: Interacting effects of soils, climate, and fire on specific leaf area
Brian Anacker, Nishanta Rajakaruna, David Ackerly, Susan Harrison, Jon E. Keeley, Michael Vasey
2011, Plant Ecology and Diversity (4) 179-188
Background: High values of specific leaf area (SLA) are generally associated with high maximal growth rates in resource-rich conditions, such as mesic climates and fertile soils. However, fire may complicate this relationship since its frequency varies with both climate and soil fertility, and fire frequency selects for regeneration strategies (resprouting...
Establishment of aerial seeding treatments in blackbrush and pinyon-juniper sites following the 2005 Southern Nevada Complex: Chapter 5
Robert C. Klinger, Matthew L. Brooks, Neil Frakes, John R. Matchett, Randy McKinley, Karen Prentice
2011, Report, Southern Nevada Complex emergency stabilization and rehabilitation final report
No abstract available....
Residence time and movements of postbreeding shorebirds on the northern coast of Alaska
Audrey R. Taylor, Richard B. Lanctot, Abby N. Powell, Steven J. Kendall, Debora A. Nigro
2011, The Condor (113) 779-794
Relatively little is known about shorebird movements across the coast of northern Alaska, yet postbreeding shorebirds use this coastline extensively prior to fall migration. We deployed 346 radio transmitters on 153 breeding and 193 postbreeding shorebirds of five species from 2005 to 2007.We examined two hypotheses regarding postbreeding shorebirds' movements:...
Simulating the potential effects of climate change in two Colorado basins and at two Colorado ski areas
William Battaglin, Lauren E. Hay, Steve Markstrom
2011, Earth Interactions (15) 1-23
The mountainous areas of Colorado are used for tourism and recreation, and they provide water storage and supply for municipalities, industries, and agriculture. Recent studies suggest that water supply and tourist industries such as skiing are at risk from climate change. In this study, a distributed-parameter watershed model, the Precipitation-Runoff...
Concluding remarks: The way forward for urban ecology
J. Niemela, J.H. Breuste, Thomas Elmqvist, Glenn R. Guntenspergen, P. James, N.E. McIntyre
J. Niemela, J.H. Breuste, T. Elmqvist, Glenn R. Guntenspergen, P. James, N.E. McIntyre, editor(s)
2011, Book chapter, Urban ecology: Patterns, processes, and applications
No abstract available....
Methodology to assess water presence on speleothems during periods of low precipitation, with implications for recharge sources - Kartchner Caverns, Arizona
Kyle W. Blasch
2011, Journal of Cave and Karst Studies (73) 63-74
Beginning in January 2005, recharge processes and the presence of water on speleothems were monitored in Kartchner Caverns during a 44-month period when annual rainfall rates were 6 to 18 percent below the long-term mean. Electrical-resistance sensors designed to detect the presence of water were used to identify ephemeral streamflow...
Evaluation of Nobuto filter paper strips for the detection of avian influenza virus antibody in waterfowl
Robert J. Dusek, Jeffrey S. Hall, Sean W. Nashold, Joshua L. Teslaa, Hon S. Ip
2011, Avian Diseases (55) 674-676
The utility of using Nobuto paper strips for the detection of avian influenza antibodies was examined in mallards (Anas platyrhynchos) experimentally infected with low pathogenic avian influenza viruses. Blood was collected 2 wk after infection and was preserved either as serum or whole blood absorbed onto Nobuto strips. Analysis of...
New insights from well responses to fluctuations in barometric pressure
J.J. Butler, W. Jin, G.A. Mohammed, E.C. Reboulet
2011, Ground Water (49) 525-533
Hydrologists have long recognized that changes in barometric pressure can produce changes in water levels in wells. The barometric response function (BRF) has proven to be an effective means to characterize this relationship; we show here how it can also be utilized to glean valuable insights into semi-confined aquifer systems....
Modeling hydrologic and geomorphic hazards across post-fire landscapes using a self-organizing map approach
Michael J. Friedel
2011, Environmental Modelling and Software (26) 1660-1674
Few studies attempt to model the range of possible post-fire hydrologic and geomorphic hazards because of the sparseness of data and the coupled, nonlinear, spatial, and temporal relationships among landscape variables. In this study, a type of unsupervised artificial neural network, called a self-organized map (SOM), is trained using data...
Sarcocystis neurona retinochoroiditis in a sea otter (Enhydra lutris kenyoni)
J. P. Dubey, N. J. Thomas
2011, Veterinary Parasitology (183) 156-159
Sarcocystis neurona is an important cause of fatal disease in sea otters in the USA. Encephalitis is the predominant lesion and parasites are confined to the central nervous system and muscles. Here we report retinochoroiditis in a sea otter (Enhydra lutris kenyoni) found dead on Copalis Beach, WA, USA. Salient...
Effects of planting method and seed mix richness on the early stages of tallgrass prairie restoration
D.L. Larson, J.B. Bright, P. Drobney, J.L. Larson, N. Palaia, P.A. Rabie, S. Vacek, D. Wells
2011, Biological Conservation (144) 3127-3139
Tallgrass prairie restoration has been practiced for more than 75. years, yet few studies have systematically tested restoration methods over large geographic regions with the intent of refining methodology. In this study, we used three planting methods (dormant-season broadcast, growing-season broadcast and growing-season drill) fully crossed with three levels of...
A predator-prey model with a holling type I functional response including a predator mutual interference
G. Seo, D.L. DeAngelis
2011, Journal of Nonlinear Science (21) 811-833
The most widely used functional response in describing predator-prey relationships is the Holling type II functional response, where per capita predation is a smooth, increasing, and saturating function of prey density. Beddington and DeAngelis modified the Holling type II response to include interference of predators that increases with predator density....
Water and heat transport in boreal soils: Implications for soil response to climate change
Z. Fan, J. C. Neff, J.W. Harden, T. Zhang, H. Veldhuis, C.I. Czimczik, G.C. Winston, J. A. O'Donnell
2011, Science of the Total Environment (409) 1836-1842
Soil water content strongly affects permafrost dynamics by changing the soil thermal properties. However, the movement of liquid water, which plays an important role in the heat transport of temperate soils, has been under-represented in boreal studies. Two different heat transport models with and without convective heat transport were compared...
Rapid assessment of rice seed availability for wildlife in harvested fields
B.J. Halstead, M. R. Miller, Michael L. Casazza, P.S. Coates, M.A. Farinha, K. Benjamin Gustafson, J.L. Yee, J. P. Fleskes
2011, Wildlife Society Bulletin (35) 377-393
Rice seed remaining in commercial fields after harvest (waste rice) is a critical food resource for wintering waterfowl in rice-growing regions of North America. Accurate and precise estimates of the seed mass density of waste rice are essential for planning waterfowl wintering habitat extents and management. In the Sacramento Valley...
