1200 years of Upper Missouri River streamflow reconstructed from tree rings
Justin T. Martin, Gregory T. Pederson, Connie A. Woodhouse, Edward R Cook, Gregory J. McCabe, Erika K. Wise, Patrick Erger, Larry Dolan, Marketa McGuire, Subhrendu Gangopadhyay, Katherine J. Chase, Jeremy S. Littell, Stephen T. Gray, Scott St. George, Jonathan M. Friedman, David J. Sauchyn, Jannine St. Jacques, John W. King
2019, Quaternary Science Reviews (224)
Paleohydrologic records can provide unique, long-term perspectives on streamflow variability and hydroclimate for use in water resource planning. Such long-term records can also play a key role in placing both present day events and projected future conditions into a broader context than that offered by instrumental observations. However,...
Seasonality of climatic drivers of flood variability in the conterminous United States
Jesse E. Dickinson, Tessa M. Harden, Gregory J. McCabe
2019, Scientific Reports (9)
Flood variability due to changes in climate is a major economic and social concern. Climate drivers can affect the amount and distribution of flood-generating precipitation through seasonal shifts in storm tracks. An understanding of how the drivers may change in the future is critical for identifying the regions where the...
Modeling groundwater nitrate exposure in private wells of North Carolina for the Agricultural Health Study
Kyle P Messier, David C Wheeler, Abigail R Flory, Rena R Jones, Deven Patel, Bernard T. Nolan, Mary H Ward
2019, Science of the Total Environment (655) 512-519
Unregulated private wells in the United States are susceptible to many groundwater contaminants. Ingestion of nitrate, the most common anthropogenic private well contaminant in the United States, can lead to the endogenous formation of N-nitroso-compounds, which are known human carcinogens. In this study, we...
Fossil tabulate corals reveal outcrops of Paleozoic sandstones in the Atlantic Coastal Plain Province, Southeastern USA
James E. Landmeyer, Francis Tourneur, Julien Denayer, Mikolaj K Zapalski
2019, PLoS ONE (14)
The geologic history of the Southeastern United States of America is missing nearly 350-million-years of rocks, sediments, and fossils. This gap defines the Fall Line nonconformity where Upper Ordovician consolidated rocks are directly overlain by Upper Cretaceous unconsolidated sediments of the Atlantic Coastal Plain Province. Here we begin to fill...
Quantifying the eroded and deposited mass of mercury-contaminated sediment by using terrestrial laser scanning at the confluence of Humbug Creek and the South Yuba River, Nevada County, California, 2011–13
James F. Howle, Charles N. Alpers, Jeffrey Kitchen, Gerald W. Bawden, Sandra Bond
2019, Scientific Investigations Report 2019-5104
High-resolution, terrestrial laser scanning, also known as ground-based lidar (light detection and ranging), was used to quantify the volume of mercury-contaminated sediment eroded from an outcrop of historical placer-mining debris at the confluence of Humbug Creek and the South Yuba River in the Sierra Nevada foothills, about 17 kilometers northeast...
Comparison of groundwater-model construction methods, representations of glacial geology, model designs, and groundwater-model flow simulations within Elkhart County, Indiana
Leslie D. Arihood, David C. Lampe, E. Randall Bayless, Steven E. Brown
2019, Scientific Investigations Report 2019-5088
Automated data-processing methods allow hydrologists to efficiently incorporate digital well-record datasets into the construction of hydrostratigraphic frameworks for groundwater-flow models. The method selected to construct the hydrostratigraphic framework can affect the extent of geologic heterogeneity that can be included in the model. The detail generated from a hydrostratigraphic framework can...
Hydrodynamic and morphologic response of a back-barrier estuary to an extratropical storm
Zafer Defne, Neil K. Ganju, Julia M. Moriarty
2019, Journal of Geophysical Research: Oceans (124) 7700-7717
We investigated the hydrodynamic and morphologic response of Barnegat Bay-Little Egg Harbor, New Jersey, USA to Hurricane Sandy. We implemented a three-dimensional, coupled ocean-wave-sediment transport model of the estuary and explored the role of offshore water levels, offshore waves, local winds and waves by systematically removing forcings from a series...
Dissolved organic carbon turnover in permafrost-influenced watersheds of interior Alaska: Molecular insights and the priming effect
Sadie R. Textor, Kimberly P. Wickland, David C. Podgorski, Sarah Ellen Johnston, Robert G.M. Spencer
2019, Frontiers in Earth Science (7) 17 pp
Increased permafrost thaw due to climate change in northern high-latitudes has prompted concern over impacts on soil and stream biogeochemistry that affect the fate of dissolved organic carbon (DOC). Few studies to-date have examined the link between molecular composition and biolability of dissolved organic matter (DOM) mobilized from different soil...
Sediment classification and the characterization, identification, and mapping of geologic substrates for the glaciated Gulf of Maine seabed and other terrains, providing a physical framework for ecological research and seabed management
Page C. Valentine
2019, Scientific Investigations Report 2019-5073
A geologic substrate is a surface (or volume) of sediment or rock where physical, chemical, and biological processes occur, such as the movement and deposition of sediment, the formation of bedforms, and the attachment, burrowing, feeding, reproduction, and sheltering of organisms. Seabed mapping surveys in the Stellwagen Bank region off...
Physical controls on salmon redd site selection in restored reaches of a regulated, gravel-bed river
Lee R. Harrison, Erin Bray, Brandon T. Overstreet, Carl J. Legleiter, Rocko A. Brown, Joseph E. Merz, Roselea M. Bond, Colin L Nicol, Thomas Dunne
2019, Water Resources Research (55) 8942-8966
Large‐scale river restoration programs have emerged recently as a tool for improving spawning habitat for native salmonids in highly altered river ecosystems. Few studies have quantified the extent to which restored habitat is utilized by salmonids, which habitat features influence redd site selection, or the persistence...
Surface water connectivity controls fish food web structure and complexity across local- and meta-food webs in Arctic Coastal Plain lakes
Sarah M. Laske, Amanda E. Rosenberger, Mark S. Wipfli, Christian E. Zimmerman
2019, Food Webs
The need for theories that address food web assembly and complexity over multiple spatial scales are critical to understanding their stability and persistence. In a meta-food web – an integrated network of local food webs – spatial heterogeneity in physical processes may have profound effects on food web function and...
Resolving a paradox—high mercury deposition, but low bioaccumulation in northeastern Puerto Rico
James B. Shanley, Mark C. Marvin-DiPasquale, Oksana P. Lane, Wayne J. Arendt, Steven J. Hall, William H. McDowell
2019, Ecotoxicology (29) 1207-1220
At a “clean air” trade winds site in northeastern Puerto Rico, we found an apparent paradox: atmospheric total mercury (THg) deposition was highest of any site in the USA Mercury Deposition Network, but assimilation into the local food web was quite low. Avian blood THg concentrations (n = 31, from eight species...
Solute transport and transformation in an intermittent, headwater mountain stream with diurnal discharge fluctuations
Adam S Ward, Marie J Kurz, Noah Schmadel, Julia LA Knapp, Phillip J Blaen, Ciaran Harman, Jennifer D. Drummond, David M Hannah, Stefan Krause, Angang Li, Eugenia Marti, Alexander Milner, Kerry Neil, Stephen Plont, Aaron I. Packman, Nathan I Wisnoski, Steven Wondzell, Jay P. Zarnetske
2019, Water (11)
Time-variable discharge is known to control both transport and transformation of solutes in the river corridor. Still, few studies consider the interactions of transport and transformation together. Here, we consider how diurnal discharge fluctuations in an intermittent, headwater stream control reach-scale solute transport and transformation as measured...
A ship's ballasting history as an indicator of foraminiferal invasion potential--An example from Prince William Sound, Alaska, USA
Mary McGann, Gregory M. Ruiz, Anson H. Hines, George D. Smith
2019, Journal of Foraminiferal Research (49) 434-455
We investigated the potential role of ballast sediment from coastal and transoceanic oil tankers arriving and de-ballasting in Port Valdez as a vector for the introduction of invasive benthic foraminifera in Prince William Sound, Alaska. Forty-one ballast sediment samples were obtained in 1998-1999 from 11 oil tankers that routinely discharged...
The use of stable isotope-based water age to evaluate a hydrodynamic model
Edward Gross, Stephen Andrews, Brian A. Bergamaschi, Bryan D. Downing, Rusty Holleman, Scott Burdick, John Durand
2019, Water (11)
Transport time scales are common metrics of the strength of transport processes. Water age is the time elapsed since water from a specific source has entered a study area. An observational method to estimate water age relies on the progressive concentration of the heavier isotopes of hydrogen...
The ‘Ike Wai Hawai‘i groundwater recharge tool
Jared H. McLean, Sean B. Cleaveland, Kolja Rotzoll, Scot K. Izuka, Jason Leigh, Gwen A. Jacobs, Ryan Theriot
2019, Conference Paper
This paper discusses the design and implementation of the ‘Ike Wai Hawai‘i Groundwater Recharge Tool, an application for providing data and analyses of the impacts of land-cover and climate modifications on groundwater-recharge rates for the island of O‘ahu. This application uses simulation data based on a set of 29 land-cover types and two rainfall scenarios to...
Groundwater and surface-water resources near Red Fleet Reservoir, Uintah County, Utah
Thomas M. Marston, John E. Solder, Katherine K. Jones
2019, Scientific Investigations Report 2019-5101
Red Fleet Reservoir in Uintah County, Utah, is an approximately 26,000 acre-foot (acre-ft) on-channel reservoir in the Big Brush Creek drainage on the south slopes of the Uinta Mountains. It is operated primarily for irrigation needs while providing a supplemental drinking-water supply to the Vernal, Utah area. Red Fleet Reservoir,...
Fire disturbance influences endangered Cape Sable Seaside Sparrow (Ammopiza maritima mirabilis) relative bird count
Allison Benscoter, James Beerens, Leonard G. Pearlstine, Stephanie Romanach
2019, Conservation Science and Practice (1)
Periodicity of fire disturbance is a known driver of ecosystem function and is reported as important in both promoting and maintaining viable breeding habitat for the endangered Cape Sable Seaside Sparrow (Ammospiza maritima mirabilis; CSSS). In south Florida, the CSSS serves as a fine-scale indicator of the marl and mixed-marl...
Groundwater availability in the Ozark Plateaus aquifer system
Brian R. Clark, Leslie L. Duncan, Katherine J. Knierim
2019, Professional Paper 1854
Executive SummaryThe study described in this report, initiated by the U.S. Geological Survey in 2014, was designed to evaluate fresh groundwater resources within the Ozark Plateaus, central United States, as an area within a broader national assessment of groundwater availability. The goals of the Ozark study were to evaluate historical...
Exit here: Strategies for dealing with aging dams and reservoirs
Henry H. Hansen, Emily Forzono, Alisha Grams, Lindsay Ohlman, Christine Ruskcamp, Mark A. Pegg, Kevin L. Pope
2019, Aquatic Sciences (82)
Aging infrastructure is prevalent throughout the world but water control management structures, specifically dams are of growing concern. Dams and their corresponding reservoirs have inherent, but separate, lifespans. The proportion of dams around the world that continue operation beyond their intended lifespans is growing at an alarming rate. Society will...
Applying the Watershed Approach to Urban Ecosystems in Baltimore
Peter Groffman, Laurence Band, Kenneth Belt, Neil Bettez, Aditi Bhaskar, Edward Doheny, Jonathan Duncan, Sujay Kaushal, Emma Rosi-Marshall, Claire Welty
2019, Book chapter, Science for the sustainable city : Empirical insights from the Baltimore School of Urban Ecology
No abstract available....
Co-located contemporaneous mapping of morphological, hydrological, chemical, and biological conditions in a 5th-order mountain stream network, Oregon, USA
Adam S Ward, Jay P. Zarnetske, Viktor Baranov, Phillip J Blaen, Nicolai Brekenfeld, Rosalie Chu, Romain Derelle, Jennifer D. Drummond, Jan Fleckenstein, Vanessa Garayburu-Caruso, Emily B. Graham, David Hannah, Ciaran Harman, Jase Hixson, Julia LA Knapp, Stefan Krause, Marie Kurz, Jorg Lewandowski, Angang Li, Eugènia Martí, Melinda Miller, Alexander Milner, Kerry Neil, Luisa Orsini, Aaron I. Packman, Stephen Plont, Lupita Renteria, Kevin Roche, Todd V Royer, Noah Schmadel, Catalina Segura, James Stegen, Jason Toyoda, Jacqueline Wells, Nathan Wisnoski, Steven Wondzell
2019, Earth System Science Data (11) 1567-1581
A comprehensive set of measurements and calculated metrics describing physical, chemical, and biological conditions in the river corridor is presented. These data were collected in a catchment-wide, synoptic campaign in the H. J. Andrews Experimental Forest (Cascade Mountains, Oregon, USA) in summer 2016 during low-discharge conditions....
13C and 15N NMR identification of product compound classes from aqueous and solid phase photodegradation of 2,4,6-trinitrotoluene
Kevin A. Thorn
2019, PLoS ONE (14)
Abstract Photolysis is one of the main transformation pathways for 2,4,6-trinitrotoluene (TNT) released into the environment. Upon exposure to sunlight, TNT is known to undergo both oxidation and reduction reactions with release of nitrite, nitrate, and ammonium ions, followed by condensation reactions of the oxidation and reduction products. In this...
Optical properties of water for prediction of wastewater contamination in surface water
Steven Corsi, Sandra McLellan
2019, Report
No abstract available....
Assessing plant production responses to climate across water-limited regions using Google Earth Engine
Erin L. Bunting, Seth M. Munson, John B. Bradford
2019, Remote Sensing of Environment (233) 1-15
(Munson) Climate variability and change acting at broad scales can lead to divergent changes in plant production at local scales. Quantifying how production responds to variation in climate at local scales is essential to understand underlying ecological processes and inform land management decision-making, but has historically been limited in spatiotemporal...
