Land-cover changes associated with oil and natural-gas production and concentrations of selected constituents in surface-water and streambed-sediment samples collected upstream from and within an area of oil and natural-gas production, south Texas, 2008–17
Cassi L. Crow, Stephen P. Opsahl, Diana E. Pedraza, Emily C. Pease, Ross K. Kushnereit
2018, Scientific Investigations Report 2018-5119
The extensive development of oil and natural-gas resources in south Texas during the past 10 years has led to questions regarding possible environmental effects of processes associated with oil and natural-gas production, in particular the process of hydraulic fracturing, on water and other natural resources. Part of the lower San...
Assessing cropland area in west Africa for agricultural yield analysis
K. Samasse, N.P. Hanan, G. Gray Tappan, Y. Diallo
2018, Remote Sensing (10)
Accurate estimates of cultivated area and crop yield are critical to our understanding of agricultural production and food security, particularly for semi-arid regions like the Sahel of West Africa, where crop production is mainly rain-fed and food security is closely correlated with the inter-annual variations in rainfall. Several global...
Hydrology and hydrodynamics on the Sacramento River near the Fremont Weir, California—Implications for juvenile salmon entrainment estimates
Paul R. Stumpner, Aaron R. Blake, Jon R. Burau
2018, Scientific Investigations Report 2018-5115
Estimates of fish entrainment on the Sacramento River near the Fremont Weir are a critical component in determining the feasibility and design of a proposed notch in the weir to increase access to the Yolo Bypass, a seasonal floodplain of the Sacramento River. Detailed hydrodynamic and velocity measurements were made...
Assessment of managed aquifer recharge at Sand Hollow Reservoir, Washington County, Utah, updated to conditions through 2016
Thomas M. Marston, Nora C. Nelson
2018, Open-File Report 2018-1140
Sand Hollow Reservoir in Washington County, Utah, was completed in March 2002 and is operated primarily for managed aquifer recharge by the Washington County Water Conservancy District. From 2002 through 2016, surface-water diversions of about 256,000 acre-feet (acre-ft) to Sand Hollow Reservoir have allowed the reservoir to remain nearly full...
Effect of calcium on the bioavailability of dissolved uranium(VI) in plant roots under circumneutral pH
Eliane El Hayek, Chris Torres, Lucia Rodriguez-Freire, Johanna M. Blake, Cherie L. De Vore, Adrian J. Brearley, Michael N. Spilde, Stephen Cabaniss, Abdul-Mehdi S. Ali, Jose M. Cerrato
2018, Environmental Science & Technology (52) 13089-13098
We integrated field measurements, hydroponic experiments, microscopy, and spectroscopy to investigate the effect of Ca(II) on dissolved U(VI) uptake by plants in 1 mM HCO3– solutions at circumneutral pH. The accumulation of U in plants (3.1–21.3 mg kg–1) from the stream bank of the Rio Paguate, Jackpile Mine, New Mexico served...
Volcanic hail detected with GPS: The 2011 eruption of Grímsvötn Volcano, Iceland
Ronni Grapenthin, Sigrun Hreinsdottir, Alexa R. Van Eaton
2018, Geophysical Research Letters (45) 12,236-12,243
Volcanic plumes are challenging to detect and characterize rapidly, but insights into processes such as hail formation or ash aggregation are valuable to hazard forecasts during volcanic crises. Global Navigation Satellite System (GNSS, which includes GPS) signals traveling from satellites to ground receivers can be disturbed by...
Adaptive management in native grasslands managed by the U.S. Fish and Wildlife Service—Implications for grassland birds
Lawrence D. Igl, Wesley E. Newton, Todd A. Grant, Cami S. Dixon
2018, Open-File Report 2018-1152
Burning and grazing are natural processes in native prairies that also serve as important tools in grassland management to conserve plant diversity, to limit encroachment of woody and invasive plants, and to maintain or improve prairies. Native prairies managed by the U.S. Fish and Wildlife Service (FWS) in the Prairie...
Image mosaic and topographic maps of Mercury
Marc A. Hunter, Trent M. Hare, Rosalyn K. Hayward, Nancy L. Chabot, Christopher D. Hash, Brett W. Denevi, Carolyn M. Ernst, Scott L. Murchie, David T. Blewett, Erick R. Malaret, Sean C. Solomon, Kris J. Becker, Tammy L. Becker, Lynn A. Weller, Kenneth L. Edmundson, Gregory A. Neuman, Erwan Mazarico, Mark E. Perry
2018, Scientific Investigations Map 3404
Map DescriptionsSheet 1: This image mosaic is based on observations acquired by the Mercury Dual Imaging System (MDIS; Hawkins and others, 2009), an instrument on the National Aeronautics and Space Agency (NASA) MErcury Surface, Space ENvironment, Geochemistry, and Ranging (MESSENGER) spacecraft (Solomon and others, 2007). The Mercator projection is used...
Application of the Stream Salmonid Simulator (S3) to the restoration reach of the Trinity River, California—Parameterization and calibration
Russell W. Perry, Edward C. Jones, John M. Plumb, Nicholas A. Som, Nicholas J. Hetrick, Thomas B. Hardy, Joseph C Polos, Aaron C. Martin, Justin S. Alvarez, Kyle P. De Juilio
2018, Open-File Report 2018-1174
Executive SummaryIn this report, we constructed and parameterized the Stream Salmonid Simulator (S3) for the 64-kilometer “Restoration Reach” of the Trinity River, just downstream of Lewiston Dam in northern California. S3 is a deterministic life-stage-structured population model that tracks daily growth, movement, and survival of juvenile salmon. A key...
Bias correction of simulated historical daily streamflow at ungauged locations by using independently estimated flow duration curves
William H. Farmer, Thomas M. Over, Julie E. Kiang
2018, Hydrology and Earth System Sciences (22) 5741-5758
In many simulations of historical daily streamflow distributional bias arising from the distributional properties of residuals has been noted. This bias often presents itself as an underestimation of high streamflow and an overestimation of low streamflow. Here, 1168 streamgages across the conterminous USA, having at least 14 complete water years of daily data...
Hydrology-driven chemical loads transported by the Green River to the Lower Duwamish Waterway near Seattle, Washington, 2013–17
Kathleen E. Conn, Robert W. Black, Craig A. Senter, Norman T. Peterson, Ann Vanderpool-Kimura
2018, Scientific Investigations Report 2018-5133
The sediments in the Lower Duwamish Waterway Superfund site in Seattle, Washington, are contaminated with chemicals including metals such as arsenic, polychlorinated biphenyls (PCBs), carcinogenic polycyclic aromatic hydrocarbons (cPAHs), and dioxins/furans from decades of intense anthropogenic activities. The U.S. Geological Survey, in cooperation with the Washington State Department of Ecology,...
Geologic map of the Fort Collins 30'×60' quadrangle, Larimer and Jackson Counties, Colorado, and Albany and Laramie Counties, Wyoming
Jeremiah B. Workman, James C. Cole, Ralph R. Shroba, Karl S. Kellogg, Wayne R. Premo
2018, Scientific Investigations Map 3399
The rocks and landforms of the Fort Collins 30′ × 60′ 1:100,000-scale U.S. Geological Survey quadrangle reveals a particularly complete record of geologic history in the northern Front Range of Colorado. The Proterozoic basement rocks exposed in the core of the range preserve evidence of Paleoproterozoic marine sedimentation, volcanism, and...
Wanted: Future leaders for ESA
Jill Baron, Catherine O'Riordan
2018, Frontiers in Ecology and the Environment (16) 311-311
A scientific society like ESA is not just an office, nor an annual meeting, nor one or more journals, and it cannot operate without volunteer leadership. ESA is its members. It is the collective efforts of many individuals that create a vibrant organization. Members step forward in service...
GenEst user guide—Software for a generalized estimator of mortality
Juniper Simonis, Daniel Dalthorp, Manuela M. Huso, Jeffrey Mintz, Lisa Madsen, Paul A. Rabie, Jared Studyvin
2018, Techniques and Methods 7-C19
GenEst (Generalized Estimator) is a software tool for estimating the total number of individuals arriving in an area during a specific time period when their detection probability is unknown but estimable. Its development was motivated by the need to accurately estimate the total number of bird and bat fatalities occurring...
Human-associated indicator bacteria and human-specific viruses in surface water: a spatial assessment with implications on fate and transport
Peter L. Lenaker, Steven R. Corsi, Sandra L. McLellan, Mark A. Borchardt, Hayley T. Olds, Deborah K. Dila, Susan K. Spencer, Austin K. Baldwin
2018, Environmental Science & Technology (52) 12162-12171
Hydrologic, seasonal, and spatial variability of sewage contamination was studied at six locations within a watershed upstream from water reclamation facility (WRF) effluent to define relative loadings of sewage from different portions of the watershed. Fecal pollution from human sources was spatially quantified by measuring two human-associated indicator bacteria (HIB)...
GenEst statistical models—A generalized estimator of mortality
Daniel Dalthorp, Lisa Madsen, Manuela M. Huso, Paul A. Rabie, Robert Wolpert, Jared Studyvin, Juniper Simonis, Jeffrey Mintz
2018, Techniques and Methods 7-A2
IntroductionGenEst (a generalized estimator of mortality) is a suite of statistical models and software tools for generalized mortality estimation. It was specifically designed for estimating the number of bird and bat fatalities at solar and wind power facilities, but both the software (Dalthorp and others, 2018) and the underlying...
Nutrient enrichment in wadeable urban streams in the piedmont ecoregion of the southeastern United States
Celeste A. Journey, Peter C. Van Metre, Daniel T. Button, Jimmy M. Clark, Mark D. Munn, Naomi Nakagaki, Sharon L. Qi, Ian R. Waite, Paul M. Bradley
2018, Heliyon (4) 1-24
The U.S. Geological Survey (USGS) Southeastern Stream Quality Assessment (SESQA) collected weekly samples for nitrogen and phosphorus in 76 wadeable streams in the urbanized Piedmont ecoregion of the Southeastern United States, during April–June 2014. Total nitrogen (TN) concentrations in excess of EPA guidelines and statistically greater than at reference locations...
Bed shear stress estimation under wave conditions using near-bottom measurements: Comparison of methods
Qian Zhang, Zheng Gong, Changkuan Zhang, Jessica R. Lacy, Bruce E. Jaffe, Beibei Xu
2018, Journal of Coastal Research (Special issue 85) 241-245
Understanding the influence of waves on bed shear stress is critical for predicting morphodynamical behaviours in coastal areas. Near-bed flow was measured on the middle and lower intertidal mudflats along the Jiangsu coast, China, using a three-dimensional acoustic velocimeter that collected a 3.5-cm vertical profile at 1mm resolution and sample...
Concentrations of pharmaceuticals and other micropollutants in groundwater downgradient from large on-site wastewater discharges
Sarah M. Elliott, Melinda L. Erickson, Aliesha L. Krall, Byron A. Adams
2018, PLoS ONE
Large subsurface treatment systems (LSTS) and rapid infiltration basins (RIB) are preferred onsite wastewater treatments compared to direct discharge of treated wastewater to streams and adjacent facilities. Discharge of these wastewater treatments may result in contaminant loading to aquifers that also serve as drinking water sources downgradient from...
Descriptive models for epithermal gold-silver deposits
David A. John, Peter G. Vikre, Edward A. du Bray, Richard J. Blakely, David L. Fey, Barnaby W. Rockwell, Jeffrey L. Mauk, Eric D. Anderson, Frederick Graybeal
2018, Scientific Investigations Report 2010-5070-Q
Epithermal gold-silver deposits are vein, stockwork, disseminated, and replacement deposits that are mined primarily for their gold and silver contents; some deposits also contain substantial resources of lead, zinc, copper, and (or) mercury. These deposits form in the uppermost parts of the crust, at depths less than about 1,500 meters...
Application of isoscapes to determine geographic origin of terrestrial wildlife for conservation and management
Hanna B. Vander Zanden, David M. Nelson, Michael B. Wunder, Tara Conkling, Todd E. Katzner
2018, Biological Conservation (228) 268-280
Accounting for migration and connectivity of mobile species across the annual cycle can present challenges for conservation and management efforts. The use of stable isotope approaches to examine the movements and ecology of wildlife has been widespread over the past two decades. Hydrogen stable isotope (δ2H) composition, in particular, has been frequently used to provide insight...
Sulfur cycle in the Valles Caldera volcanic complex, New Mexico – Letter 1: Sulfate sources in aqueous system, and implications for S isotope record in Gale Crater on Mars
Anna Szynkiewicz, Fraser E. Goff, David Vaniman, Michael Pribil
2018, Earth and Planetary Science Letters (506) 540-551
Initial in situ sulfur (S) isotope measurements of the Martian bedrock in Gale Crater have revealed an unexpectedly wide range of δ34S values (−47 to +28%). Generally, it is unclear what processes could have contributed to these large isotope fractionations. Therefore, we studied S sources and aqueous SO2−4 cycling in...
First comprehensive list of non-native species established in three major regions of the United States
Annie Simpson, Meghan C. Eyler
2018, Open-File Report 2018-1156
Invasive species are a subset of non-native (or alien) species, and knowing what species are non-native to a region is a first step to managing invasive species. People have been compiling non-native and invasive species lists ever since these species started causing harm, yet national non-native species lists are neither...
Contribution of hurricane-induced sediment resuspension to coastal oxygen dynamics
Laura Bianucci, Karthik Balaguru, Richard W. Smith, Ruby Leung, Julia M. Moriarty
2018, Scientific Reports (8) 1-10
Hurricanes passing over the ocean can mix the water column down to great depths and resuspend massive volumes of sediments on the continental shelves. Consequently, organic carbon and reduced inorganic compounds associated with these sediments can be resuspended from anaerobic portions of the seabed and re-exposed to dissolved oxygen...
Assessment of potential risks from renewable energy development and other anthropogenic factors to wintering Golden Eagles in the western United States
Erica H. Craig, Mark R. Fuller, Tim H. Craig, Falk Huettmann
Grant Humphries, Dawn Magness, Falk Huettmann, editor(s)
2018, Book chapter, Machine learning for ecology and sustainable natural resource management
Wind and other energy development are expanding rapidly and on an unprecedented scale within the range of the Golden Eagle (Aquila chrysaetos) while other anthropogenic-related changes, wildfires, invasive plants, drought, and climate change are altering or destroying native habitats occupied by Golden Eagles. However, the potential effects of...
