A nuclear localization of the infectious haematopoietic necrosis virus NV protein is necessary for optimal viral growth
M.K. Choi, C. H. Moon, M.S. Ko, U.-H. Lee, W. Cho, S.J. Cha, J.W. Do, G.J. Heo, S.G. Jeong, Y.S. Hahm, A. Harmache, M. Bremont, Gael Kurath, J. W. Park
2011, PLoS ONE (6)
The nonvirion (NV) protein of infectious hematopoietic necrosis virus (IHNV) has been previously reported to be essential for efficient growth and pathogenicity of IHNV. However, little is known about the mechanism by which the NV supports the viral growth. In this study, cellular localization of NV and its role in...
Historical summer base flow and stormflow trends for New England rivers
Glenn A. Hodgkins, Robert W. Dudley
2011, Water Resources Research (47)
River base flow is important to aquatic ecosystems, particularly because of its influence on summer water temperatures. Summer (June through September) daily mean streamflows were separated into base flow and stormflow components by use of an automated method at 25 stations in the New England region of the United States...
OBIS-USA: a data-sharing legacy of the census of marine life
G.R. Sedberry, D.G. Fautin, M. Feldman, M.D. Fornwall, P. Goldstein, R.P. Guralnick
2011, Oceanography (24) 166-173
The United States Geological Survey's Biological Informatics Program hosts OBIS-USA, the US node of the Ocean Biogeographic Information System (OBIS). OBIS-USA gathers, coordinates, applies standard formats to, and makeswidely available data on biological collections in marine waters of the United States and other areas where US investigators have collected data...
Balancing forest-regeneration probabilities and maintenance costs in dry grasslands of high conservation priority
Janine Bolliger, Thomas C. Edwards Jr., Stefan Eggenberg, Sascha Ismail, Irmi Seidl, Felix Kienast
2011, Conservation Biology (25) 567-576
Abandonment of agricultural land has resulted in forest regeneration in species-rich dry grasslands across European mountain regions and threatens conservation efforts in this vegetation type. To support national conservation strategies, we used a site-selection algorithm (MARXAN) to find optimum sets of floristic regions (reporting units) that contain grasslands of high...
Agricultural practices and residual corn during spring crane and waterfowl migration in Nebraska
Mark H. Sherfy, Michael J. Anteau, A.A. Bishop
2011, Journal of Wildlife Management (75) 995-1003
Nebraska's Central Platte River Valley (CPRV) is a major spring‐staging area for migratory birds. Over 6 million ducks, geese, and sandhill cranes (Grus canadensis) stage there en route to tundra, boreal forest, and prairie breeding habitats, storing nutrients for migration and reproduction by consuming primarily corn remaining in fields after...
A multitracer approach for characterizing interactions between shallow groundwater and the hydrothermal system in the Norris Geyser Basin area, Yellowstone National Park
W.P. Gardner, David D. Susong, D. K. Solomon, H.P. Heasler
2011, Geochemistry, Geophysics, Geosystems (12)
Multiple environmental tracers are used to investigate age distribution, evolution, and mixing in local‐ to regional‐scale groundwater circulation around the Norris Geyser Basin area in Yellowstone National Park. Springs ranging in temperature from 3°C to 90°C in the Norris Geyser Basin area were sampled for stable isotopes of hydrogen and...
Is the northern high-latitude land-based CO2 sink weakening?
D.J. Hayes, A. D. McGuire, D. W. Kicklighter, K.R. Gurney, T.J. Burnside, J. M. Melillo
2011, Global Biogeochemical Cycles (25)
Studies indicate that, historically, terrestrial ecosystems of the northern high-latitude region may have been responsible for up to 60% of the global net land-based sink for atmospheric CO2. However, these regions have recently experienced remarkable modification of the major driving forces of the carbon cycle, including surface air temperature warming...
Groundwater chemistry near an impoundment for produced water, Powder River Basin, Wyoming, USA
R. W. Healy, T.T. Bartos, C. A. Rice, M.P. McKinley, B. D. Smith
2011, Journal of Hydrology (403) 37-48
The Powder River Basin is one of the largest producers of coal-bed natural gas (CBNG) in the United States. An important environmental concern in the Basin is the fate of the large amounts of groundwater extracted during CBNG production. Most of this produced water is disposed of in unlined surface...
Exploring the sensitivity of soil carbon dynamics to climate change, fire disturbance and permafrost thaw in a black spruce ecosystem
J. A. O'Donnell, Jennifer W. Harden, A. David McGuire, V.E. Romanovsky
2011, Biogeosciences (8) 1367-1382
In the boreal region, soil organic carbon (OC) dynamics are strongly governed by the interaction between wildfire and permafrost. Using a combination of field measurements, numerical modeling of soil thermal dynamics, and mass-balance modeling of OC dynamics, we tested the sensitivity of soil OC storage to a suite of individual...
Atacamite and paratacamite from the ultramafic-hosted Logatchev seafloor vent field (14°45′N, Mid-Atlantic Ridge)
Vesselin Dekov, Tanya Boycheva, Ulf Halenius, Sven Petersen, Kjell Billstrom, Jens Stummeyer, G. Kamenov, W. Shanks
2011, Chemical Geology (286) 169-184
Atacamite and paratacamite are ubiquitous minerals associated with Cu-rich massive sulfides at the Logatchev hydrothermal field (Mid-Atlantic Ridge). In this work we provide new details on the mineralogy and geochemistry of these basic cupric chlorides. Our data support the notion that atacamite and paratacamite formation at submarine vent fields is...
Projecting avian response to linked changes in groundwater and riparian floodplain vegetation along a dryland river: A scenario analysis
Brand L. Arriana, J.C. Stromberg, D.C. Goodrich, M.D. Dixon, K. Lansey, D. Kang, D.S. Brookshire, D.J. Cerasale
2011, Ecohydrology (4) 130-142
Groundwater is a key driver of riparian condition on dryland rivers but is in high demand for municipal, industrial, and agricultural uses. Approaches are needed to guide decisions that balance human water needs while conserving riparian ecosystems. We developed a space‐for‐time substitution model that links groundwater change scenarios implemented within...
Are temperate mature forests buffered from invasive lianas?
Noel B. Pavlovic, Stacey A. Leicht-Young
2011, Journal of the Torrey Botanical Society (138) 85-92
Mature and old-growth forests are often thought to be buffered against invasive species due to low levels of light and infrequent disturbance. Lianas (woody vines) and other climbing plants are also known to exhibit lower densities in older forests. As part of a larger survey of the lianas of the...
Ungulate herbivory on alpine willow in the Sangre de Cristo Mountains of Colorado
Linda Zeigenfuss, Kathryn A. Schoenecker, L.K.V. Amburg
2011, Western North American Naturalist (71) 86-96
In many areas of the Rocky Mountains, elk (Cervus elaphus) migrate from low-elevation mountain valleys during spring to high-elevation subalpine and alpine areas for the summer. Research has focused on the impacts of elk herbivory on winter-range plant communities, particularly on woody species such as willow and aspen; however, little...
Implementation of unmanned aircraft systems by the U.S. Geological Survey
J.J. Cress, J.L. Sloan, M.E. Hutt
2011, Geocarto International (26) 133-140
The U.S. Geological Survey (USGS) Unmanned Aircraft Systems (UAS) Project Office is leading the implementation of UAS technology in anticipation of transforming the research methods and management techniques employed across the Department of the Interior. UAS technology is being made available to monitor environmental conditions, analyse the impacts of climate...
Depositional and diagenetic variability within the Cambrian Mount Simon Sandstone: Implications for carbon dioxide sequestration
B.B. Bowen, R.I. Ochoa, N.D. Wilkens, J. Brophy, T.R. Lovell, N. Fischietto, C.R. Medina, J.A. Rupp
2011, Environmental Geosciences (18) 69-89
The Cambrian Mount Simon Sandstone is the major target reservoir for ongoing geologic carbon dioxide (CO2) sequestration demonstrations throughout the midwest United States. The potential CO2 reservoir capacity, reactivity, and ultimate fate of injected CO2 depend on textural and compositional properties determined by depositional and diagenetic histories that vary vertically and laterally...
Shallow conduit system at Kilauea Volcano, Hawaii, revealed by seismic signals associated with degassing bursts
Bernard Chouet, Phillip Dawson
2011, Journal of Geophysical Research B: Solid Earth (116) B12317
Eruptive activity at the summit of Kilauea Volcano, Hawaii, beginning in March, 2008 and continuing to the present time is characterized by episodic explosive bursts of gas and ash from a vent within Halemaumau Pit Crater. These bursts are accompanied by seismic signals that are well recorded by a broadband...
Analytical model for screening potential CO2 repositories
R.T. Okwen, M.T. Stewart, J.A. Cunningham
2011, Computational Geosciences (15) 755-770
Assessing potential repositories for geologic sequestration of carbon dioxide using numerical models can be complicated, costly, and time-consuming, especially when faced with the challenge of selecting a repository from a multitude of potential repositories. This paper presents a set of simple analytical equations (model), based on the work of previous...
Seismic and geodetic signatures of fault slip at the Slumgullion Landslide Natural Laboratory
J. Gomberg, W. Schulz, P. Bodin, J. Kean
2011, Journal of Geophysical Research B: Solid Earth (116)
We tested the hypothesis that the Slumgullion landslide is a useful natural laboratory for observing fault slip, specifically that slip along its basal surface and side-bounding strike-slip faults occurs with comparable richness of aseismic and seismic modes as along crustal- and plate-scale boundaries. Our study provides new constraints on models...
Exploring geophysical processes influencing U.S. West Coast precipitation and water supply
F.M. Ralph, K. Prather, D. Cayan
2011, Eos, Transactions, American Geophysical Union (92) 352
CalWater Science Workshop; La Jolla, California, 8-10 June 2011 CalWater is a multiyear, multiagency research project with two primary research themes: the effects of changing climate on atmospheric rivers (ARs) and associated extreme events, and the potential role of aerosols in modulating cloud properties and precipitation, especially regarding orographic precipitation...
An empirical model of the quiet daily geomagnetic field variation
Y. Yamazaki, K. Yumoto, M.G. Cardinal, B.J. Fraser, P. Hattori, Y. Kakinami, J.Y. Liu, K.J.W. Lynn, R. Marshall, D. McNamara, T. Nagatsuma, V.M. Nikiforov, R.E. Otadoy, M. Ruhimat, B.M. Shevtsov, K. Shiokawa, S. Abe, T. Uozumi, A. Yoshikawa
2011, Journal of Geophysical Research A: Space Physics (116)
An empirical model of the quiet daily geomagnetic field variation has been constructed based on geomagnetic data obtained from 21 stations along the 210 Magnetic Meridian of the Circum‐pan Pacific Magnetometer Network (CPMN) from 1996 to 2007. Using the least squares fitting method for geomagnetically quiet days (Kp ≤ 2+),...
Habitat suitability and nest survival of white-headed woodpeckers in unburned forests of Oregon
Jeff P. Hollenbeck, Victoria A. Saab, Richard W. Frenzel
2011, Journal of Wildlife Management (75) 1061-1071
We evaluated habitat suitability and nest survival of breeding white-headed woodpeckers (Picoides albolarvatus) in unburned forests of central Oregon, USA. Daily nest-survival rate was positively related to maximum daily temperature during the nest interval and to density of large-diameter trees surrounding the nest tree. We developed a niche-based habitat suitability...
The importance of within-year repeated counts and the influence of scale on long-term monitoring of sage-grouse
B.C. Fedy, Cameron L. Aldridge
2011, Journal of Wildlife Management (75) 1022-1033
Long‐term population monitoring is the cornerstone of animal conservation and management. The accuracy and precision of models developed using monitoring data can be influenced by the protocols guiding data collection. The greater sage‐grouse (Centrocercus urophasianus) is a species of concern that has been monitored over decades, primarily, by counting the...
Statistical methods of estimating mining costs
K. R. Long
2011, Conference Paper, SME Annual Meeting and Exhibit and CMA 113th National Western Mining Conference 2011
Until it was defunded in 1995, the U.S. Bureau of Mines maintained a Cost Estimating System (CES) for prefeasibility-type economic evaluations of mineral deposits and estimating costs at producing and non-producing mines. This system had a significant role in mineral resource assessments to estimate costs of developing and operating known...
Labile Fe(II) concentrations in the Atlantic sector of the Southern Ocean along a transect from the subtropical domain to the Weddell Sea Gyre
G. Sarthou, E. Bucciarelli, F. Chever, S.P. Hansard, M. Gonzalez-Davila, J. M. Santana-Casiano, F. Planchon, S. Speich
2011, Biogeosciences (8) 2461-2479
Labile Fe(II) distributions were investigated in the Sub-Tropical South Atlantic and the Southern Ocean during the BONUS-GoodHope cruise from 34 to 57° S (February–March 2008). Concentrations ranged from below the detection limit (0.009 nM) to values as high as 0.125 nM. In the surface mixed layer, labile Fe(II) concentrations were...
Wave climate and trends along the eastern Chukchi Arctic Alaska coast
L. H. Erikson, C. D. Storlazzi, R. E. Jensen
2011, Conference Paper, Solutions to Coastal Disasters 2011 - Proceedings of the 2011 Solutions to Coastal Disasters Conference
Due in large part to the difficulty of obtaining measurements in the Arctic, little is known about the wave climate along the coast of Arctic Alaska. In this study, numerical model simulations encompassing 40 years of wave hind-casts were used to assess mean and extreme wave conditions. Results indicate that...
