Emerging contaminants at a closed and an operating landfill in Oklahoma
William J. Andrews, Jason R. Masoner, Isabelle M. Cozzarelli
2012, Groundwater Monitoring & Remediation (32) 120-130
Landfills are the final depositories for a wide range of solid waste from both residential and commercial sources, and therefore have the potential to produce leachate containing many organic compounds found in consumer products such as pharmaceuticals, plasticizers, disinfectants, cleaning agents, fire retardants, flavorings, and preservatives, known as emerging contaminants...
Modeling responses of large-river fish populations to global climate change through downscaling and incorporation of predictive uncertainty
Mark L. Wildhaber, Christopher K. Wikle, Christopher J. Anderson, Kristie J. Franz, Edward H. Moran, Rima Dey
Helmut Mader, Julia Kraml, editor(s)
2012, Conference Paper, 9th International Symposium on Ecohydraulics 2012 Proceedings
Climate change operates over a broad range of spatial and temporal scales. Understanding its effects on ecosystems requires multi-scale models. For understanding effects on fish populations of riverine ecosystems, climate predicted by coarse-resolution Global Climate Models must be downscaled to Regional Climate Models to watersheds to river hydrology...
Characterization of previously unidentified lunar pyroclastic deposits using Lunar Reconnaissance Orbiter Camera (LROC) data
J. Olaf Gustafson, James F. Bell, Lisa R. Gaddis, B. Ray Hawke, Thomas A. Giguere
2012, Journal of Geophysical Research E: Planets (117)
We used a Lunar Reconnaissance Orbiter Camera (LROC) global monochrome Wide-angle Camera (WAC) mosaic to conduct a survey of the Moon to search for previously unidentified pyroclastic deposits. Promising locations were examined in detail using LROC multispectral WAC mosaics, high-resolution LROC Narrow Angle Camera (NAC) images, and Clementine multispectral (ultraviolet-visible...
Assessing consumption of bioactive micro-particles by filter-feeding Asian carp
Nathan R. Jensen, Jon J. Amberg, James A. Luoma, Liza R. Walleser, Mark P. Gaikowski
2012, Journal of Aquaculture Research & Development (3)
Silver carp Hypophthalmichthys molitrix (SVC) and bighead carp H. nobilis (BHC) have impacted waters in the US since their escape. Current chemical controls for aquatic nuisance species are non-selective. Development of a bioactive micro-particle that exploits filter-feeding habits of SVC or BHC could result in a new control tool. It...
Design and development of linked data from the National Map
E. Lynn Usery, Dalia E. Varanka
2012, Semantic Web (3) 371-384
The development of linked data on the World-Wide Web provides the opportunity for the U.S. Geological Survey (USGS) to supply its extensive volumes of geospatial data, information, and knowledge in a machine interpretable form and reach users and applications that heretofore have been unavailable. To pilot a process to take...
Dryland biological soil crust cyanobacteria show unexpected decreases in abundance under long-term elevated CO2
Blaire Steven, La Verne Gallegos-Graves, Chris M. Yeager, Jayne Belnap, R. David Evans, Cheryl R. Kuske
2012, Environmental Microbiology (14) 3247-3258
Biological soil crusts (biocrusts) cover soil surfaces in many drylands globally. The impacts of 10 years of elevated atmospheric CO2 on the cyanobacteria in biocrusts of an arid shrubland were examined at a large manipulated experiment in Nevada, USA. Cyanobacteria-specific quantitative PCR surveys of cyanobacteria small-subunit (SSU) rRNA genes suggested...
Gopherus agassizii (Agassiz’s desert tortoise). scute dysecdysis/scute sloughing
Kenneth E. Nussear, K. Kristina Drake, Phil A. Medica, Todd C. Esque
2012, Herpetological Review (43) 473-474
Desert tortoises with scute injuries due to fire or disease related processes can result in loss of the scute. These animals appear to function normally, and can replace the scute material with a keratinized layer that covers the bone. This paper describes a tortoise with severe scute loss from a...
Airborne LiDAR analysis and geochronology of faulted glacial moraines in the Tahoe-Sierra frontal fault zone reveal substantial seismic hazards in the Lake Tahoe region, California-Nevada USA
James F. Howle, Gerald W. Bawden, Richard A. Schweickert, Robert C. Finkel, Lewis E. Hunter, Ronn S. Rose, Brent von Twistern
2012, GSA Bulletin (124) 1087-1101
We integrated high-resolution bare-earth airborne light detection and ranging (LiDAR) imagery with field observations and modern geochronology to characterize the Tahoe-Sierra frontal fault zone, which forms the neotectonic boundary between the Sierra Nevada and the Basin and Range Province west of Lake Tahoe. The LiDAR imagery clearly delineates active normal...
ASTER satellite observations for international disaster management
K. A. Duda, M. Abrams
2012, Proceedings of IEEE (100) 2798-2811
When lives are threatened or lost due to catastrophic disasters, and when massive financial impacts are experienced, international emergency response teams rapidly mobilize to provide urgently required support. Satellite observations of affected areas often provide essential insight into the magnitude and details of the impacts. The large cost and high...
Estimating and predicting collection probability of fish at dams using multistate modeling
John M. Plumb, William P. Connor, Kenneth F. Tiffan, Christine M. Moffitt, Russell W. Perry, Noah S. Adams
2012, Transactions of the American Fisheries Society (141) 1364-1373
Dams can be equipped with a bypass that routes a portion of the fish that enter the turbine intakes away from the powerhouse into flumes, where they can be counted. Daily passage abundance can be estimated by dividing the number of fish counted in the bypass by the sampling rate and then...
Complementarity of ResourceSat-1 AWiFS and Landsat TM/ETM+ sensors
S.N. Goward, G. Chander, M. Pagnutti, A. Marx, R. Ryan, N. Thomas, R. Tetrault
2012, Remote Sensing of Environment (123) 41-56
Considerable interest has been given to forming an international collaboration to develop a virtual moderate spatial resolution land observation constellation through aggregation of data sets from comparable national observatories such as the US Landsat, the Indian ResourceSat and related systems. This study explores the complementarity of India's ResourceSat-1 Advanced Wide...
Using the internet to understand angler behavior in the information age
Dustin R. Martin, Brenda M. Pracheil, Jason A. DeBoer, Gene R. Wilde, Kevin L. Pope
2012, Fisheries (37) 458-463
Declining participation in recreational angling is of great concern to fishery managers because fishing license sales are an important revenue source for protection of aquatic resources. This decline is frequently attributed, in part, to increased societal reliance on electronics. Internet use by anglers is increasing and fishery managers may use...
Effects of future climate change, CO2 enrichment, and vegetation structure variation on hydrological processes in China
Qiuan Zhu, Hong Jiang, Changhui Peng, Jinxun Liu, Xiuqin Fang, Xiaohua Wei, Shirong Liu, Guomo Zhou
2012, Global and Planetary Change (80-81) 123-135
Investigating the relationship between factors (climate change, atmospheric CO2 concentrations enrichment, and vegetation structure) and hydrological processes is important for understanding and predicting the interaction between the hydrosphere and biosphere. The Integrated Biosphere Simulator (IBIS) was used to evaluate the effects of climate change, rising CO2, and vegetation structure on...
Changing restoration rules: exotic bivalves interact with residence time and depth to control phytoplankton productivity
Lisa V. Lucas, Janet K. Thompson
2012, Ecosphere (3)
Non-native species are a prevalent ecosystem stressor that can interact with other stressors to confound resource management and restoration. We examine how interactions between physical habitat attributes and a particular category of non-native species (invasive bivalves) influence primary production in aquatic ecosystems. Using mathematical models, we show how intuitive relationships...
Long-term change along the Colorado River in Grand Canyon National Park (1889-2011)
R. H. Webb, J. Belnap, M. L. Scott, J.M. Friedman, T.C. Esque
2012, Newsletter
The Colorado River and its riverine resources have undergone profound changes since completion of Glen Canyon Dam in 1963, as every river runner with any history in Grand Canyon will attest. Long-term monitoring data are difficult to obtain for high-value resource areas (Webb et al. 2009), particularly in remote parts...
The 2009 eruption of Redoubt Volcano, Alaska
Katharine F. Bull, Cheryl Cameron, Michelle L. Coombs, Angie Diefenbach, Taryn Lopez, Steve McNutt, Christina A. Neal, Allison Payne, John A. Power, David J. Schneider, William E. Scott, Seth Snedigar, Glenn Thompson, Kristi L. Wallace, Christopher F. Waythomas, Peter Webley, Cynthia A. Werner
Janet R. Schaefer, editor(s)
2012, Report of Investigations of the Alaska Department of Natural Resources, Division of Geological & Geophysical Surveys 2011-5
Redoubt Volcano, an ice-covered stratovolcano on the west side of Cook Inlet, erupted in March 2009 after several months of escalating unrest. The 2009 eruption of Redoubt Volcano shares many similarities with eruptions documented most recently at Redoubt in 1966–68 and 1989–90. In each case, the eruptive phase lasted several...
Constraints on the timing of Co-Cu ± Au mineralization in the Blackbird district, Idaho, using SHRIMP U-Pb ages of monazite and xenotime plus zircon ages of related Mesoproterozoic orthogneisses and metasedimentary rocks
John N. Aleinikoff, John F. Slack, Karen Lund, Karl V. Evans, C. Mark Fanning, Frank K. Mazdab, Joseph L. Wooden, Renee M. Pillers
2012, Economic Geology (107) 1143-1175
The Blackbird district, east-central Idaho, contains the largest known Co reserves in the United States. The origin of strata-hosted Co-Cu ± Au mineralization at Blackbird has been a matter of controversy for decades. In order to differentiate among possible genetic models for the deposits, including various combinations of volcanic, sedimentary,...
Multiple functions of a multi-component mating pheromone in sea lamprey Petromyzon marinus
N.S. Johnson, S.-S. Yun, T.J. Buchinger, W. Li
2012, Journal of Fish Biology (80) 538-554
The role of the C24 sulphate in the mating pheromone component, 7α,12α,24-trihydroxy-5α-cholan-3-one 24-sulphate (3kPZS), to specifically induce upstream movement in ovulated female sea lampreys Petromyzon marinus was investigated. 7α,12α-dihydroxy-5α-cholan-3-one 24-oic acid (3kACA), a structurally similar bile acid released by spermiated males, but lacking the C24 sulphate ester, was tested in...
Golden Gate Bridge response: a study with low-amplitude data from three earthquakes
Mehmet Çelebi
2012, Earthquake Spectra (28) 487-510
The dynamic response of the Golden Gate Bridge, located north of San Francisco, CA, has been studied previously using ambient vibration data and finite element models. Since permanent seismic instrumentation was installed in 1993, only small earthquakes that originated at distances varying between ~11 to 122 km have been recorded....
Applications of science and engineering to quantify and control the Deepwater Horizon oil spill
Marcia K. McNutt, Steven Chu, Jane Lubchenco, Tom Hunter, Gabrielle Dreyfus, Steven A. Murawski, David M. Kennedy
2012, PNAS (109) 20222-20228
The unprecedented engagement of scientists from government, academia, and industry enabled multiple unanticipated and unique problems to be addressed during the Deepwater Horizon oil spill. During the months between the initial blowout on April 20, 2010, and the final well kill on September 19, 2010, researchers prepared options, analyses of...
Hydromechanical effects of continental glaciation on groundwater systems
C. E. Neuzil
2012, Geofluids (12) 22-37
Hydromechanical effects of continental ice sheets may involve considerably more than the widely recognized direct compression of overridden terrains by ice load. Lithospheric flexure, which lags ice advance and retreat, appears capable of causing comparable or greater stress changes. Together, direct and flexural loading may increase fluid pressures by tens...
Development of a real-time PCR assay for detection of planktonic red king crab (Paralithodes camtschaticus (Tilesius 1815)) larvae
Pamela C. Jensen, Maureen K. Purcell, J. Frank Morado, Ginny L. Eckert
2012, Journal of Shellfish Research (31) 917-924
The Alaskan red king crab (Paralithodes camtschaticus) fishery was once one of the most economically important single-species fisheries in the world, but is currently depressed. This fishery would benefit from improved stock assessment capabilities. Larval crab distribution is patchy temporally and spatially, requiring extensive sampling efforts to locate and track...
Increased temperature and altered summer precipitation have differential effects on biological soil crusts in a dryland ecosystem
Shannon L. Johnson, Cheryl R. Kuske, Travis D. Carney, David C. Housman, La Verne Gallegos-Graves, Jayne Belnap
2012, Global Change Biology (18) 2583-2593
Biological soil crusts (biocrusts) are common and ecologically important members of dryland ecosystems worldwide, where they stabilize soil surfaces and contribute newly fixed C and N to soils. To test the impacts of predicted climate change scenarios on biocrusts in a dryland ecosystem, the effects of a 2–3 °C increase...
Identifying grasslands suitable for cellulosic feedstock crops in the Greater Platte River Basin: dynamic modeling of ecosystem performance with 250 m eMODIS
Yingxin Gu, Stephen P. Boyte, Bruce K. Wylie, Larry L. Tieszen
2012, GCB Bioenergy (4) 96-106
This study dynamically monitors ecosystem performance (EP) to identify grasslands potentially suitable for cellulosic feedstock crops (e.g., switchgrass) within the Greater Platte River Basin (GPRB). We computed grassland site potential and EP anomalies using 9-year (2000–2008) time series of 250 m expedited moderate resolution imaging spectroradiometer Normalized Difference Vegetation Index...
Crustal seismicity and the earthquake catalog maximum moment magnitudes (Mcmax) in stable continental regions (SCRs): Correlation with the seismic velocity of the lithosphere
Walter D. Mooney, Jeroen Ritsema, Yong Keun Hwang
2012, Earth and Planetary Science Letters (357-358) 78-83
A joint analysis of global seismicity and seismic tomography indicates that the seismic potential of continental intraplate regions is correlated with the seismic properties of the lithosphere. Archean and Early Proterozoic cratons with cold, stable continental lithospheric roots have fewer crustal earthquakes and a lower maximum earthquake catalog moment magnitude...
