Dynamic relations for the deposition of sediment on floodplains and point bars of a freely-meandering river
John A. Moody
2019, Geomorphology (327) 585-597
Fluvial features such as floodplains and point bars are built by sediment deposition and sculpted by erosion. Long-term measurements (38 yr) of the cross-section topography of active floodplains and point bars along the freely-meandering Powder River in southeastern Montana, USA (mean daily discharge of 12.5 m3 s−1), were used to develop dynamic...
Effective modeling for Integrated Water Resource Management: A guide to contextual practices by phases and steps and future opportunities
J. Badham, Sondoss Elsawah, Joseph H. A. Guillaume, Serena H Hamilton, Randall J. Hunt, Anthony J. Jakeman, Suzanne A Pierce, Meghna Babbar-Sebens, Baihua Fu, Patricia Gober, Mary C Hill, Takuya Iwanaga, Daniel P Loucks, Wendy S. Merritt, Scott D Peckham, Amy K Richmond, Fateme Zare, Daniel P. Ames, Gabriele Bammer
2019, Environmental Modelling & Software (116)
The effectiveness of Integrated Water Resource Management (IWRM) modeling hinges on the quality of practices employed through the process, starting from early problem definition all the way through to using the model in a way that serves its intended purpose. The adoption and implementation of effective modeling practices need to be guided...
Simulating demography, genetics, and spatially explicit processes to inform reintroduction of a threatened char
Meryl C. Mims, Casey C. Day, Jacob J. Burkhart, Matthew R. Fuller, Jameson Hinkle, Andrew Bearlin, Jason B. Dunham, Patrick W. DeHaan, Zachary A. Holden, Erin L. Landguth
2019, Ecosphere (10) 1-24
The success of species reintroductions can depend on a combination of environmental, demographic, and genetic factors. Although the importance of these factors in the success of reintroductions is well‐accepted, they are typically evaluated independently, which can miss important interactions. For species that persist in metapopulations, movement through and interaction with...
River‐valley morphology, basin size, and flow‐event magnitude interact to produce wide variation in flooding dynamics
Molly Van Appledorn, Matthew E. Baker, Andrew J. Miller
2019, Ecosphere (10) 1-25
Inundation dynamics are a key driver of ecosystem form and function in river‐valley bottoms. Inundation itself is an outcome of multi‐scalar interactions and can vary strongly within and among river reaches. As a result, establishing to what degree and how inundation dynamics vary spatially both within and among river reaches...
Effects of urban multi-stressors on three stream biotic assemblages
Ian R. Waite, Mark D. Munn, Patrick W. Moran, Christopher P. Konrad, Lisa H. Nowell, Michael R. Meador, Peter C. Van Metre, Daren Carlisle
2019, Science of the Total Environment (660) 1472-1485
During 2014, the U.S. Geological Survey (USGS) National Water-Quality Assessment(NAWQA) project assessed stream quality in 75 streams across an urban disturbance gradient within the Piedmont ecoregion of southeastern United States. Our objectives were to identify primary instream stressors affecting algal, macroinvertebrate and fish assemblages in wadeable streams. Biotic communities were surveyed once at each site,...
Negligible cycling of terrestrial carbon in many lakes of the arid circumpolar landscape
Matthew J. Bogard, Catherine D. Kuhn, Sarah Ellen Johnston, Robert G. Striegl, Gordon W. Holtgrieve, Mark M. Dornblaser, Robert G. M. Spencer, Kimberly P. Wickland, David E. Butman
2019, Nature Geoscience (12) 180-185
High-latitude environments store nearly half of the planet’s below-ground organic carbon (OC), mostly in perennially frozen permafrost soils. Climatic changes drive increased export of terrestrial OC into many aquatic networks, yet the role that circumpolar lakes play in mineralizing this carbon is unclear. Here we directly evaluate ecosystem-scale OC cycling...
Postglacial faulting near Crater Lake, Oregon, and its possible association with the Mazama caldera-forming eruption
Charles R. Bacon, Joel E. Robinson
2019, Geological Society of America Bulletin (131) 1440-1458
Volcanoes of subduction-related magmatic arcs occur in a variety of crustal tectonic regimes, including where active faults indicate arc-normal extension. The Cascades arc volcano Mount Mazama overlaps on its west an ∼10-km-wide zone of ∼north-south–trending normal faults. A lidar (light detection and ranging) survey of Crater Lake National Park, reveals...
Stratigraphic cross sections of the Niobrara Interval of the Upper Cretaceous Cody Shale in the Bighorn Basin, Wyoming and Montana
Thomas M. Finn
2019, Scientific Investigations Map 3422
The Bighorn Basin is one of many structural and sedimentary basins that formed in the Rocky Mountain foreland during the Laramide orogeny. The basin is nearly 180 miles long, 100 miles wide, and encompasses about 10,400 square miles in northern Wyoming and southern Montana. The basin is bounded by major...
Factors affecting the occurrence of lead and manganese in untreated drinking water from Atlantic and Gulf Coastal Plain aquifers, eastern United States—Dissolved oxygen and pH framework for evaluating risk of elevated concentrations
Craig J. Brown, Jeannie R. B. Barlow, Charles A. Cravotta III, Bruce D. Lindsey
2019, Applied Geochemistry (101) 88-102
Groundwater samples collected during 2012 and 2013 from public-supply wells screened in the Atlantic and Gulf Coastal Plain aquifers of the eastern and southeastern U.S. rarely contained lead or manganese concentrations that exceeded drinking-water limits, despite having corrosive characteristics. Data indicate that the occurrence of dissolved lead and manganese in sampled groundwater, prior to...
Most Earth-surface calcites precipitate out of isotopic equilibrium
Mathieu Daeron, Russell N Drysdale, Marion Peral, Damien Huyghe, Dominique Blamart, Tyler B. Coplen, Franck Lartaud, Giovanni Zanchetta
2019, Nature Communications (10) 1-7
Oxygen-isotope thermometry played a critical role in the rise of modern geochemistry and remains extensively used in (bio-)geoscience. Its theoretical foundations rest on the assumption that 18O/16O partitioning among water and carbonate minerals primarily reflects thermodynamic equilibrium. However, after decades of research, there is no consensus on the true equilibrium 18O/16O fractionation...
Research priorities for freshwater mussel conservation assessment
Noe Ferreira-Rodriguez, Yoshihiro B. Akiyama, Olga V. Aksenova, M. Christopher Barnhart, Yulia V. Bespalaya, Arthur E. Bogan, Ivan N Bolotov, Prem B. Budha, Cristhian Clavijo, Susan J. Clearwater, Gustavo Darrigran, Van Tu Do, Karel Douda, Elsa Froufe, Clemens Gumpinger, Lennart Henrikson, Chris L. Humphrey, Nathan A. Johnson, Olga Klishko, Michael W. Klunzinger, Satit Kovitvadhi, Uthaiwan Kovitvadhi, Jasna Lajtner, Manuel Lopes-Lima, Evelyn A. Moorkens, Shigeya Nagayama, Karl-Otto Nagel, Mitsunori Nakano, Junjiro N. Negishi, Paz Ondina, Panu Oulasvirta, Vincent Prie, Nicoletta Riccardi, Mudite Rudzite, Fran Sheldon, Ronaldo Sousa, David L. Strayer, Motoi Takeuchi, Jouni Taskinen, Amilcar Teixeira, Jeremy S. Tiemann, Maria Urbanska, Simone Varandas, Maxim V. Vinarski, Barry J. Wicklow, Tadeusz Zajac, Caryn C. Vaughn
2019, Biological Conservation (231) 77-87
Freshwater mussels are declining globally, and effective conservation requires prioritizing research and actions to identify and mitigate threats impacting mussel species. Conservation priorities vary widely, ranging from preventing imminent extinction to maintaining abundant populations. Here, we develop a portfolio of priority research topics for freshwater mussel conservation assessment. To address...
US Topo Product Standard
Larry R. Davis, Kristin A. Fishburn, Helmut Lestinsky, Laurence R. Moore, Jennifer L. Walter
2019, Techniques and Methods 11-B2
This document defines a U.S. Geological Survey (USGS) digital topographic map. This map product series, named “US Topo,” is modeled on the now historical USGS 7.5-minute (1:24,000 scale) topographic map series produced and printed by the USGS from 1947 to 2006. US Topo maps have the...
Marshes are the new beaches: Integrating sediment transport into restoration planning
Neil K. Ganju
2019, Estuaries and Coasts (42) 917-926
Recent coastal storms and associated recovery efforts have led to increased investment in nature-based coastal protection, including restoration of salt marshes and construction of living shorelines. In particular, many of these efforts focus on increasing vertical elevation through sediment nourishment, where sediment is removed from the tidal channel and placed...
Evaluation of genetic change from translocation among Gunnison Sage-Grouse (Centrocercus minimus) populations
Shawna J Zimmerman, Cameron L. Aldridge, Anthony D. Apa, Sara J. Oyler-McCance
2019, Ornithological Applications (121)
Maintenance of genetic diversity is important for conserving species, especially those with fragmented habitats or ranges. In the absence of natural dispersal, translocation can be used to achieve this goal, although the success of translocation can be difficult to measure. Here we evaluate genetic change following translocation in Gunnison...
The dual‐domain porosity apparatus: Characterizing dual porosity at the sediment/water interface
Courtney R. Scruggs, Martin A. Briggs, Frederick D. Day-Lewis, Dale D. Werkema, John W. Lane Jr.
2019, Groundwater (57) 640-646
The characterization of pore-space connectivity in porous media at the sediment/water interface is critical to understanding contaminant transport and reactive biogeochemical processes in zones of groundwater and surface-water exchange. Previous in situ studies of dual-domain (i.e., mobile/less-mobile porosity) studies have been limited to solute tracer injections at...
Erratum to: Isotope-abundance variations and atomic weights of selected elements: 2016 (IUPAC Technical Report)
Tyler B. Coplen, Yesha Shrestha
2019, Pure and Applied Chemistry (91) 173-173
No abstract available....
Three-dimensional geologic mapping to assess geothermal potential: Examples from Nevada and Oregon
Drew L. Siler, James E. Faulds, Nicholas H. Hinz, Gregory M. Dering, Joel H. Edwards, Brett Mayhew
2019, Geothermal Energy – Science, Society and Technology (7) 1-32
Geologic structure plays an important role in controlling fluid flow in geothermal systems. In particular, very complex structural settings, consisting of many closely spaced and intersecting faults, host many geothermal systems. To elucidate the key geologic factors that affect fault-controlled geothermal circulation, it is critical to precisely characterize the structural...
A bibliometric profile of the Remote Sensing Open Access Journal published by MDPI between 2009 and 2018
YuYing Zhang, Prasad S. Thenkabail, Peng Wang
2019, Remote Sensing (11) 1-34
Remote Sensing Open Access Journal (RS OAJ) is an international leading journal in the field of remote sensing science and technology. It was first published in the year 2009 and is currently celebrating tenth year of publications. In this research, a bibliometric analysis of RS OAJ was conducted based on...
Burmese Python (Python bivittatus)
Kenneth L. Krysko, Robert Reed, Michael R. Rochford, Leroy P. Nunez, Kevin M. Enge
2019, Book chapter, Amphibians and reptiles of Florida
No abstract available....
Rayleigh wave ellipticity measurement uncertainty across the IRIS/USGS and New China Digital Seismograph Networks
Adam T. Ringler, David C. Wilson, Walter Zurn, Robert E. Anthony
2019, Geophysical Journal International (217) 219-237
Long-period Rayleigh wave horizontal to vertical amplitude (H/V) ratios at a station provide information about local earth structure that is complementary to phase velocity. However, a number of studies have observed that significant scatter appears in these measurements making it difficult to use H/V ratio measurements to resolve earth structure....
Stratification of reactivity determines nitrate removal in groundwater
Tamara Kolbe, Jean-Raynald de Dreuzy, Benjamin Abbott, Luc Aquilina, Tristan Babey, Christopher Green, Jan Fleckenstein, Thierry Labasque, Anniet M Laverman, Jean Marcais, Stefan Peiffer, Zahra Thomas, Gilles Pinay
2019, Proceedings of the National Academy of Sciences (7) 2494-2499
Biogeochemical reactions occur unevenly in space and time, but this heterogeneity is often simplified as a linear average due to sparse data, especially in subsurface environments where access is limited. For example, little is known about the spatial variability of groundwater denitrification, an important process in...
Adaptive management assists reintroduction as higher tides threaten an endangered salt marsh plant
Gregory E. Noe, Meghan Fellows, Lorraine Parsons, Janelle West, John C. Callaway, Sally Trnka, Mark Wegener, Joy Zedler
2019, Restoration Ecology (27) 750-757
In theory, extirpated plant species can be reintroduced and managed to restore sustainable populations. However, few reintroduced plants are known to persist for more than a few years. Our adaptive‐management case study illustrates how we restored the endangered hemiparasitic annual plant, Chloropyron maritimum subsp. maritimum (salt marsh bird's beak), to Sweetwater Marsh, San Diego...
Azimuthal seismic anisotropy of 70 Ma Pacific‐plate upper mantle
H. F. Mark, D. Lizarralde, J. A. Collins, Nathaniel C. Miller, G. Hirth, J. B. Gaherty, R. L. Evans
2019, Journal of Geophysical Research B: Solid Earth (124) 1889-1909
Plate formation and evolution processes are predicted to generate upper mantle seismic anisotropy and negative vertical velocity gradients in oceanic lithosphere. However, predictions for upper mantle seismic velocity structure do not fully agree with the results of seismic experiments. The strength of anisotropy observed in the upper mantle varies widely....
Linking landscapes and people—Projecting the future of the Great Plains
Terry L. Sohl, Jordan Dornbierer, Steve Wika
2019, Rangelands (41) 79-87
We developed a unique set of landscape projections for the Great Plains that use real land-management parcels to represent landscape patterns at high spatial and thematic resolution.Both anthropogenic land use and natural vegetation respond in the model to projected changes in groundwater availability and climate change.Thirty-three scenario combinations were modeled, facilitating landscape planning and mitigation efforts under...
Rapid pre-concentration of mercury in solids and water for isotopic analysis
Sarah E. Janssen, Ryan F. Lepak, Michael T. Tate, Jacob M. Ogorek, John F. DeWild, Christopher L. Babiarz, James P. Hurley, David P. Krabbenhoft
2019, Analytica Chimica Acta (1054) 95-103
The precise quantification of mercury (Hg) stable isotope compositions in low concentration or dilute samples poses analytical challenges due to Hg mass limitations. Common Hg pre-concentration procedures require extended processing times, making rapid Hg stable isotope measurements challenging. Here we present a modified pre-concentration method that combines commonly used Hg reduction and gold trap...
