Red-backed vole brain promotes highly efficient in vitro amplification of abnormal prion protein from macaque and human brains infected with variant Creutzfeldt-Jakob disease agent.
Julie Nemecek, Nabanita Nag, Christina M. Carlson, Jay R. Schneider, Dennis M. Heisey, Christopher J. Johnson, David M. Asher, Luisa Gregori
2013, PLoS ONE (8)
Rapid antemortem tests to detect individuals with transmissible spongiform encephalopathies (TSE) would contribute to public health. We investigated a technique known as protein misfolding cyclic amplification (PMCA) to amplify abnormal prion protein (PrPTSE) from highly diluted variant Creutzfeldt-Jakob disease (vCJD)-infected human and macaque brain homogenates, seeking to improve the rapid...
Transport and fate of microbial pathogens in agricultural settings
Scott A. Bradford, Veronica L. Morales, Wei Zhang, Ronald W. Harvey, Aaron I. Packman, Arvind Mohanram, Claire Welty
2013, Critical Reviews in Environmental Science and Technology (43) 775-893
An understanding of the transport and survival of microbial pathogens (pathogens hereafter) in agricultural settings is needed to assess the risk of pathogen contamination to water and food resources, and to develop control strategies and treatment options. However, many knowledge gaps still remain in predicting the fate and transport of...
Characterizing LEDAPS surface reflectance products by comparisons with AERONET, field spectrometer, and MODIS data
Tom Maiersperger, Pat Scaramuzza, Larry Leigh, S. Shrestha, Kevin Gallo, Calli B. Jenkerson, John L. Dwyer
2013, Remote Sensing of Environment (136) 1-13
This study provides a baseline quality check on provisional Landsat Surface Reflectance (SR) products as generated by the U.S. Geological Survey (USGS) Earth Resources Observation and Science (EROS) Center using Landsat Ecosystem Disturbance Adaptive Processing System (LEDAPS) software. Characterization of the Landsat SR products leveraged comparisons between aerosol optical thickness...
Rethinking infiltration in wildfire-affected soils
Brian A. Ebel, John A. Moody
2013, Hydrological Processes (27) 1510-1514
Wildfires frequently result in natural hazards such as flash floods (Yates et al., 2001) and debris flows (Cannon et al., 2001a,b; Gabet and Sternberg, 2008). One of the principal causes of the increased risk of post-wildfire hydrologically driven hazards is reduced in filtration rates (e.g. Scott and van Wyk, 1990;...
Integrating GIS across disciplines: how the intersection of biology and geography has influenced fisheries GIS
William L. Fisher
T. Nishida, A. E. Canton, editor(s)
2013, Book chapter, GIS/Spatial Analyses in Fishery and Aquatic Sciences, volume 5
No abstract available....
Enhanced transfer of terrestrially derived carbon to the atmosphere in a flooding event
Thomas S. Bianchi, Fenix Garcia-Tigreros, Shari A. Yvon-Lewis, Michael Shields, Heath J. Mills, David Butman, Christopher Osburn, Peter A. Raymond, G. Christopher Shank, Steven F. DiMarco, Nan Walker, Brandi Kiel Reese, Ruth Mullins-Perry, Antonietta Quigg, George R. Aiken, Ethan L. Grossman
2013, Geophysical Research Letters (40) 116-122
Rising CO2 concentration in the atmosphere, global climate change, and the sustainability of the Earth's biosphere are great societal concerns for the 21st century. Global climate change has, in part, resulted in a higher frequency of flooding events, which allow for greater exchange between soil/plant litter and aquatic carbon pools. Here...
Use of gene-expression programming to estimate Manning’s roughness coefficient for high gradient streams
H. Azamathulla, Robert D. Jarrett
2013, Water Resources Management (27) 715-729
Manning’s roughness coefficient (n) has been widely used in the estimation of flood discharges or depths of flow in natural channels. Therefore, the selection of appropriate Manning’s nvalues is of paramount importance for hydraulic engineers and hydrologists and requires considerable experience, although extensive guidelines are available. Generally,...
Trends in landscape and vegetation change and implications for the Santa Cruz Watershed
Miguel L. Villarreal, Laura M. Norman, Robert H. Webb, Raymond M. Turner
2013, Book, Proceedings of the Science on the Sonoita Plain Symposium
Monitoring and characterizing the interactive effects of land use and climate on land surface processes is a primary focus of land change science, and of particular concern in arid Wells Distribution in Shallow Groundwater Areas Pumping Trends Increase Streamflow Extent Declines 27 environments where both landscapes and livelihoods can be...
Making the case for the Picuris orogeny: Evidence for a 1500 to 1400 Ma orogenic event in the southwestern United States
Christopher G. Daniel, James V. Jones III, Christopher L. Andronicos, Mary Beth Gray
Lon D. Abbott, Gregory S. Hancock, editor(s)
2013, Book chapter, Classic concepts and new directions: Exploring 125 years of GSA discoveries in the Rocky Mountain region
The early Mesoproterozoic (ca. 1400 Ma) is an enigmatic time in the tectonic evolution of southern Laurentia. Circa 1400 Ma granites within Laurentia and multiple other continents have distinctive geochemistry consistent with crustal extension or mantle upwelling. In the southwestern United States, these granites are commonly foliated...
Towards a publicly available, map-based regional software tool to estimate unregulated daily streamflow at ungauged rivers
Stacey A. Archfield, Peter A. Steeves, John D. Guthrie, Kernell G. Ries III
2013, Geoscientific Model Development (6) 101-115
Streamflow information is critical for addressing any number of hydrologic problems. Often, streamflow information is needed at locations that are ungauged and, therefore, have no observations on which to base water management decisions. Furthermore, there has been increasing need for daily streamflow time series to manage rivers for both human...
Spatial and temporal variations in landscape evolution: historic and longer-term sediment flux through global catchments
Jacob A. Covault, William H. Craddock, Brian W. Romans, Andrea Fildani, Mayur Gosai
2013, The Journal of Geology (121) 35-56
Sediment generation and transport through terrestrial catchments influence soil distribution, geochemical cycling of particulate and dissolved loads, and the character of the stratigraphic record of Earth history. To assess the spatiotemporal variation in landscape evolution, we compare global compilations of stream gauge–derived () and cosmogenic radionuclide (CRN)–derived (predominantly 10Be; )...
Spatio-temporal dynamics of pneumonia in bighorn sheep
E. Frances Cassirer, Raina K. Plowright, Kezia R. Manlove, Paul C. Cross, Andrew P. Dobson, Kathleen A. Potter, Peter J. Hudson
2013, Journal of Animal Ecology (82) 518-528
Bighorn sheep mortality related to pneumonia is a primary factor limiting population recovery across western North America, but management has been constrained by an incomplete understanding of the disease. We analysed patterns of pneumonia-caused mortality over 14 years in 16 interconnected bighorn sheep populations to gain insights into underlying disease...
Paleogeographic insights based on new U-Pb dates for altered tuffs in the Miocene Barstow Formation, California
David M. Miller, Jose E. Rosario, Shannon R. Leslie, Jorge A. Vazquez
2013, Conference Paper, Raising Questions in the Central Mojave Desert
The type section of the Barstow Formation in the Mud Hills, north of Barstow, is a reference section for early to middle Miocene paleontology, magnetostratigraphy, and dated volcanic episodes. Thanks to this robust chronologic framework, much of the interpretation of the paleogeography of the region from about 18 Ma to...
Preliminary report on the Late Pleistocene and Holocene diatoms of Swamp Lake, Yosemite National Park, California, USA
Scott W. Starratt, R. Scott Anderson
2013, Phytotaxa (127) 128-149
Swamp Lake, Yosemite National Park, is the only known lake in California containing long sequences of varved sediments and thus has the potential to provide a high-resolution record of climate variability. This preliminary analysis of the diatom assemblages from a 947-cm-long composite sediment core (freeze core FZ02–05; 0–67 cm, Livingstone...
Convection in a volcanic conduit recorded by bubbles
Rebecca J. Carey, Michael Manga, Wim Degruyter, Helge M. Gonnermann, Donald Swanson, Bruce F. Houghton, Tim R. Orr, Matthew R. Patrick
2013, Geology (41) 395-398
Microtextures of juvenile pyroclasts from Kīlauea’s (Hawai‘i) early A.D. 2008 explosive activity record the velocity and depth of convection within the basaltic magma-filled conduit. We use X-ray microtomography (μXRT) to document the spatial distribution of bubbles. We find small bubbles (radii from 5 μm to 70 μm) in a halo...
Seismicity associated with the May 2010 eruption of South Sarigan Seamount, Northern Mariana Islands
Cheryl Searcy
2013, Seismological Research Letters (84) 1055-1061
On 29 May 2010, at approximately 11:48 UTC, an undersea volcano south of Sarigan in the Northern Mariana Islands (Figs. 1 and 2) erupted sending a cloud of volcanic ash and water vapor to 40,000 feet (12 km; Washington Volcanic Ash Advisory Center). Bathymetric data (Stern and Smoot, 1998; Embley et al., 2007)...
The benefits of improved national elevation data
Gregory I. Snyder
2013, Photogrammetric Engineering and Remote Sensing (79) 105-110
This article describes how the National Enhanced Elevation Assessment (NEEA) has identified substantial benefits that could come about if improved elevation data were publicly available for current and emerging applications and business uses such as renewable energy, precision agriculture, and intelligent vehicle navigation and safety. In order to support these...
A comparison of data-driven groundwater vulnerability assessment methods
Alessandro Sorichetta, Cristiano Ballabio, Marco Masetti, Gilpin R. Robinson Jr., Simone Sterlacchini
2013, Groundwater (51) 866-879
Increasing availability of geo-environmental data has promoted the use of statistical methods to assess groundwater vulnerability. Nitrate is a widespread anthropogenic contaminant in groundwater and its occurrence can be used to identify aquifer settings vulnerable to contamination. In this study, multivariate Weights of Evidence (WofE) and Logistic Regression (LR) methods,...
The Idaho cobalt belt
Arthur A. Bookstrom
2013, Northwest Geology (42) 149-162
The Idaho cobalt belt (ICB) is a northwest-trending belt of cobalt (Co) +/- copper (Cu)-bearing deposits and prospects in the Salmon River Mountains of east-central Idaho, U.S.A. The ICB is about 55 km long and 10 km long in its central part, which contains multiple strata-bound ore zones in the...
WICCI Wildlife Working Group Report
Olivia E. LeDee, Suzanne Hagell, K. Martin, David McFarland, Michael Meyer, Andy Paulios, Christine A. Ribic, D. Sample, Timothy R. Van Deelen
2013, Report
Wisconsin is world-renowned for its diversity of ecological landscapes and wildlife populations. The northern forests, southern prairies, and interior and coastal wetlands of the state are home to more than 500 terrestrial animal species. These animals supply the Wisconsin public with aesthetic, cultural, and economic benefits; our identity and economy...
A statistical analysis of the global historical volcanic fatalities record
Melanie Rose Auker, Robert Stephen John Sparks, Lee Siebert, H. S. Crosweller, John W. Ewert
2013, Journal of Applied Volcanology (2) 1-24
A new database of volcanic fatalities is presented and analysed, covering the period 1600 to 2010 AD. Data are from four sources: the Smithsonian Institution, Witham (2005), CRED EM-DAT and Munich RE. The data were combined and formatted, with a weighted average fatality figure used where more than one...
Laramide basin CSI: Comprehensive stratigraphic investigations of Paleogene sediments in the Colorado Headwaters Basin, north-central Colorado
Marieke Dechesne, James C. Cole, James H. Trexler, Patricia Cashman, Christopher D Peterson
2013, Book chapter, Classic concepts and new directions: Exploring 125 years of GSA discoveries in the Rocky Mountain Region
The Paleogene sedimentary deposits of the Colorado Headwaters Basin provide a detailed proxy record of regional deformation and basin subsidence during the Laramide orogeny in north-central Colorado and southern Wyoming. This field trip presents extensive evidence from sedimentology, stratigraphy, structure, palynology, and isotope geochronology that shows a complex history that...
The ovenbird (Seiurus aurocapilla) as a model for testing food-value theory
Henry M. Streby, Sean M. Peterson, Brian Scholtens, Adrian P. Monroe, David E. Andersen
2013, The American Midland Naturalist (169) 214-220
Food-value theory states that territorial animals space themselves such that each territory contains adequate food for rearing young. The ovenbird (Seiurus aurocapilla) is often cited as a species for which this hypothesis is supported because ovenbird territory size is inversely related to ground-invertebrate abundance within territories. However, little is known...
Vegetation ecogeomorphology, dynamic equilibrium, and disturbance
Cliff R. Hupp, W. R. Osterkamp
2013, Book chapter, Ecogeomorphology: Volume 12 in Treatise in Geomorphology
Early ecologists understood the need to document geomorphic form and process to explain plant species distributions. Although this relationship has been acknowledged for over a century, with the exception of a few landmark papers, only the past few decades have experienced intensive research on this interdisciplinary topic. Here the authors...
On the identification of a Pliocene time slice for data–model comparison
Alan M. Haywood, Aisling M. Dolan, Steven J. Pickering, Harry J. Dowsett, Erin L. McClymont, Caroline L. Prescott, Ulrich Salzmann, Daniel J. Hill, Stephen J. Hunter, Daniel J. Lunt, James O. Pope, Paul J. Valdes
2013, Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences (371) 1-21
The characteristics of the mid-Pliocene warm period (mPWP: 3.264–3.025 Ma BP) have been examined using geological proxies and climate models. While there is agreement between models and data, details of regional climate differ. Uncertainties in prescribed forcings and in proxy data limit the utility of the interval to understand the dynamics of...
