A spatial cluster analysis of tractor overturns in Kentucky from 1960 to 2002
D.M. Saman, H.P. Cole, A. Odoi, M.L. Myers, D.I. Carey, S.C. Westneat
2012, PLoS ONE (7)
Background:Agricultural tractor overturns without rollover protective structures are the leading cause of farm fatalities in the United States. To our knowledge, no studies have incorporated the spatial scan statistic in identifying high-risk areas for tractor overturns. The aim of this study was to determine whether tractor overturns cluster in certain...
Thinning of young Douglas-fir forests decreases density of northern flying squirrels in the Oregon Cascades
Tom Manning, Joan C. Hagar, Brenda C. McComb
2012, Forest Ecology and Management (264) 115-124
Large-scale commercial thinning of young forests in the Pacific Northwest is currently promoted on public lands to accelerate the development of late-seral forest structure for the benefit of wildlife species such as northern spotted owls (Strix occidentalis caurina) and their prey, including the northern flying squirrel (Glaucomys sabrinus). Attempts to...
Evaluation of MODFLOW-LGR in connection with a synthetic regional-scale model
T.N. Vilhelmsen, S. Christensen, Steffen W. Mehl
2012, Ground Water (50) 118-132
This work studies costs and benefits of utilizing local‐grid refinement (LGR) as implemented in MODFLOW‐LGR to simulate groundwater flow in a buried tunnel valley interacting with a regional aquifer. Two alternative LGR methods were used: the shared‐node (SN) method and the ghost‐node (GN) method. To conserve flows the SN method...
Concentration, distribution, and translocation of mercury and methylmercury in mine-waste, sediment, soil, water, and fish collected near the Abbadia San Salvatore mercury mine, Monte Amiata district, Italy
V. Rimondi, J. E. Gray, P. Costagliola, O. Vaselli, P. Lattanzi
2012, Science of the Total Environment (414) 318-327
The distribution and translocation of mercury (Hg) was studied in the Paglia River ecosystem, located downstream from the inactive Abbadia San Salvatore mine (ASSM). The ASSM is part of the Monte Amiata Hg district, Southern Tuscany, Italy, which was one of the world’s largest Hg districts. Concentrations of Hg and...
Magnetostratigraphy susceptibility for the Guadalupian Series GSSPs (Middle Permian) in Guadalupe Mountains National Park and adjacent areas in West Texas
Bruce R. Wardlaw, Brooks B. Ellwood, Lance L. Lambert, Jonathan H. Tomkin, Gordon L. Bell, Galina P. Nestell
2012, Geological Society, London, Special Publications (373) 21-21
Here we establish a magnetostratigraphy susceptibility zonation for the three Middle Permian Global boundary Stratotype Sections and Points (GSSPs) that have recently been defined, located in Guadalupe Mountains National Park, West Texas, USA. These GSSPs, all within the Middle Permian Guadalupian Series, define (1) the base of the Roadian Stage...
Patterns of natural mortality in stream-living brown trout (Salmo trutta)
J. Lobon-Cervia, P. Budy, E. Mortensen
2012, Freshwater Biology (57) 575-588
1. We tested the hypothesis that lifetime mortality patterns and their corresponding rates and causal factors differ among populations of stream‐living salmonids. To this end, we examined the lifetime mortality patterns of several successive cohorts of two stream‐living brown trout (Salmo trutta) populations in Spain and Denmark.2. In the southern...
Crop classification modelling using remote sensing and environmental data in the Greater Platte River Basin, USA
Daniel M. Howard, Bruce K. Wylie, Larry L. Tieszen
2012, International Journal of Remote Sensing (33) 6094-6108
With an ever expanding population, potential climate variability and an increasing demand for agriculture-based alternative fuels, accurate agricultural land-cover classification for specific crops and their spatial distributions are becoming critical to researchers, policymakers, land managers and farmers. It is important to ensure the sustainability of these and other land uses...
Occurrence and geochemistry of radium in water from principal drinking-water aquifer systems of the United States
Z. Szabo, Vincent T. DePaul, J.M. Fischer, T. F. Kraemer, E. Jacobsen
2012, Applied Geochemistry (27) 729-752
A total of 1270 raw-water samples (before treatment) were collected from 15 principal and other major aquifer systems (PAs) used for drinking water in 45 states in all major physiographic provinces of the USA and analyzed for concentrations of the Ra isotopes 224Ra, 226Ra and 228Ra establishing...
Ecoregional analysis of nearshore sea-surface temperature in the North Pacific
M.C. Payne, C.A. Brown, D.A. Reusser, H. Lee II
2012, PLoS ONE (7)
The quantification and description of sea surface temperature (SST) is critically important because it can influence the distribution, migration, and invasion of marine species; furthermore, SSTs are expected to be affected by climate change. To better understand present temperature regimes, we assembled a 29-year nearshore time series of...
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...
MT3DMS: Model use, calibration, and validation
C. Zheng, Mary C. Hill, G. Cao, R. Ma
2012, Transactions of the ASABE (55) 1549-1559
MT3DMS is a three-dimensional multi-species solute transport model for solving advection, dispersion, and chemical reactions of contaminants in saturated groundwater flow systems. MT3DMS interfaces directly with the U.S. Geological Survey finite-difference groundwater flow model MODFLOW for the flow solution and supports the hydrologic and discretization features of MODFLOW. MT3DMS contains...
Nest defense- Grassland bird responses to snakes
Kevin S. Ellison, Christine Ribic
2012, Studies in Avian Biology (43) 149-159
Predation is the primary source of nest mortality for most passerines; thus, behaviors to reduce the impacts of predation are frequently quantified to study learning, adaptation, and coevolution among predator and prey species. Video surveillance of nests has made it possible to examine real-time parental nest defense. During 1999-2009, we...
The 2010 explosive eruption of Java's Merapi volcano—A ‘100-year’ event
Surono, Philippe Jousset, John S. Pallister, Marie Boichu, M. Fabrizia Buongiorno, Agus Budisantoso, Fidel Costa, Supriyati Andreastuti, Fred Prata, David J. Schneider, Lieven Clarisse, Hanik Humaida, Sri Sumarti, Christian Bignami, Julia P. Griswold, Simon A. Carn, Clive Oppenheimer, Franck Lavigne
2012, Journal of Volcanology and Geothermal Research (241-242) 121-135
Merapi volcano (Indonesia) is one of the most active and hazardous volcanoes in the world. It is known for frequent small to moderate eruptions, pyroclastic flows produced by lava dome collapse, and the large population settled on and around the flanks of the volcano that is at risk. Its usual...
Chemical mixtures in untreated water from public-supply wells in the U.S. — Occurrence, composition, and potential toxicity
Patricia L. Toccalino, Julia E. Norman, Jonathon C. Scott
2012, Science of the Total Environment (431) 262-270
Chemical mixtures are prevalent in groundwater used for public water supply, but little is known about their potential health effects. As part of a large-scale ambient groundwater study, we evaluated chemical mixtures across multiple chemical classes, and included more chemical contaminants than in previous studies of mixtures in public-supply wells....
The FOBIMO (FOraminiferal BIo-MOnitoring) initiative—Towards a standardised protocol for soft-bottom benthic foraminiferal monitoring studies
Joachim Schoenfeld, Elisabeth Alve, Emmanuelle Geslin, Frans Jorissen, Sergei Korsun, Silva Spezzaferri, Sigal Abramovich, Ahuva Almogi-Labin, Eric Armynot du Chatelet, Christine Barras, Luisa Bergamin, Erica Bicchi, Vincent Bouchet, Alejandro Cearreta, Letizia Di Bella, Noortje Dijkstra, Sibelle Trevisan Disaro, Luciana Ferraro, Fabrizio Frontalini, Giordana Gennari, Elena Golikova, Kristin Haynert, Silvia Hess, Katrine Husum, Virginia Martins, Mary McGann, Shai Oron, Elena Romano, Silvia Mello Sousa, Akira Tsujimoto
2012, Marine Micropaleontology (94-95) 1-13
The European Community Marine Strategy Framework Directive (MSFD) was established to provide guidelines for monitoring the quality of marine ecosystems. Monitoring the status of marine environments is traditionally based on macrofauna surveys, for which standardised methods have been established. Benthic foraminifera are also good indicators of environmental status because of...
Ocean-atmosphere dynamics during Hurricane Ida and Nor'Ida: An application of the coupled ocean-atmosphere-wave-sediment transport (COAWST) modeling system
Maitane Olabarrieta, John C. Warner, Brandy N. Armstrong, Joseph B. Zambon, Ruoying He
2012, Ocean Modelling (43-44) 112-137
The coupled ocean–atmosphere–wave–sediment transport (COAWST) modeling system was used to investigate atmosphere–ocean–wave interactions in November 2009 during Hurricane Ida and its subsequent evolution to Nor’Ida, which was one of the most costly storm systems of the past two decades. One interesting aspect of this...
Geostatistical modeling of the gas emission zone and its in-place gas content for Pittsburgh-seam mines using sequential Gaussian simulation
Cevat O. Karacan, Ricardo A. Olea, G. Goodman
2012, International Journal of Coal Geology (90-91) 50-71
Determination of the size of the gas emission zone, the locations of gas sources within, and especially the amount of gas retained in those zones is one of the most important steps for designing a successful methane control strategy and an efficient ventilation system in...
Petroleum prospectivity of the Canada Basin, Arctic Ocean
Arthur Grantz, Patrick E. Hart
2012, Marine and Petroleum Geology (30) 126-143
Reconnaissance seismic reflection data indicate that Canada Basin is a >700,000 sq. km. remnant of the Amerasia Basin of the Arctic Ocean that lies south of the Alpha-Mendeleev Large Igneous Province, which was constructed across the northern part of the Amerasia Basin between about 127 and 89–83.5 Ma. Canada Basin...
Selection of nest-site habitat by interior least terns in relation to sandbar construction
M. H. Sherfy, J. H. Stucker, D. A. Buhl
2012, Journal of Wildlife Management (76) 363-371
Federally endangered interior least terns (Sternula antillarum) nest on bare or sparsely vegetated sandbars on midcontinent river systems. Loss of nesting habitat has been implicated as a cause of population declines, and managing these habitats is a major initiative in population recovery. One such initiative involves construction of mid-channel sandbars...
Mesoproterozoic syntectonic garnet within Belt Supergroup metamorphic tectonites: Evidence of Grenville-age metamorphism and deformation along northwest Laurentia
T.O. Nesheim, J.D. Vervoort, W.C. McClelland, J. A. Gilotti, H.M. Lang
2012, LITHOS (134-135) 91-107
Northern Idaho contains Belt-Purcell Supergroup equivalent metamorphic tectonites that underwent two regional deformational and metamorphic events during the Mesoproterozoic. Garnet-bearing pelitic schists from the Snow Peak area of northern Idaho yield Lu–Hf garnet-whole rock ages of 1085 ± 2 Ma, 1198 ± 79 Ma, 1207 ± 8 Ma, 1255 ± 28 Ma, and 1314 ± 2 Ma. Garnet from one sample, collected from the Clarkia...
Sex difference in polybrominated diphenyl ether concentrations of walleyes
Charles P. Madenjian, Autumn W. Trombka, Richard R. Rediske, David J. Jude, James P. O'Keefe
2012, Journal of Great Lakes Research (38) 167-175
Polybrominated diphenyl ether (PBDE) concentrations were determined for mature male and mature female walleyes (Sander vitreus) sampled from the Saginaw Bay population during 2007. PBDE concentrations in prey fish caught in the Saginaw River, the primary tributary to Saginaw Bay, and in Saginaw Bay during 2005 and 2007 also were...
Migration of Sakhalin taimen (Parahucho perryi): Evidence of freshwater resident life history types
Christian E. Zimmerman, P.S. Rand, M. Fukushima, S.F. Zolotukhin
2012, Environmental Biology of Fishes (93) 223-232
Sakhalin taimen (Parahucho perryi) range from the Russian Far East mainland along the Sea of Japan coast, and Sakhalin, Kuril, and Hokkaido Islands and are considered to primarily be an anadromous species. We used otolith strontium-to-calcium ratios (Sr/Ca) to determine the chronology of migration between freshwater and saltwater and identify...
A multi-source satellite data approach for modelling Lake Turkana water level: Calibration and validation using satellite altimetry data
N.M. Velpuri, Gabriel B. Senay, K.O. Asante
2012, Hydrology and Earth System Sciences (16) 1-18
Lake Turkana is one of the largest desert lakes in the world and is characterized by high degrees of inter- and intra-annual fluctuations. The hydrology and water balance of this lake have not been well understood due to its remote location and unavailability of reliable ground truth datasets. Managing surface...
Hierarchy in factors affecting fish biodiversity in floodplain lakes of the Mississippi Alluvial Valley
D.J. Dembkowski, L.E. Miranda
2012, Environmental Biology of Fishes (93) 357-368
River-floodplain ecosystems offer some of the most diverse and dynamic environments in the world. Accordingly, floodplain habitats harbor diverse fish assemblages. Fish biodiversity in floodplain lakes may be influenced by multiple variables operating on disparate scales, and these variables may exhibit a hierarchical organization depending on whether one variable governs...
Has the magnitude of floods across the USA changed with global CO2 levels?
Robert M. Hirsch, Karen R. Ryberg
2012, Hydrological Sciences Journal (57) 1-9
Statistical relationships between annual floods at 200 long-term (85–127 years of record) streamgauges in the coterminous United States and the global mean carbon dioxide concentration (GMCO2) record are explored. The streamgauge locations are limited to those with little or no regulation or urban development. The coterminous US is divided into...
