Metabolically diverse microorganisms mediate methylmercury formation under nitrate-reducing conditions in a dynamic hydroelectric reservoir
Benjamin D. Peterson, Brett A. Poulin, David P. Krabbenhoft, Michael T. Tate, Austin K. Baldwin, Jesse Naymik, Nick Gastelecutto, Katherine D. McMahon
2023, International Society for Microbial Ecology Journal (17) 1705-1718
Brownlee Reservoir is a mercury (Hg)-impaired hydroelectric reservoir that exhibits dynamic hydrological and geochemical conditions and is located within the Hells Canyon Complex in Idaho, USA. Methylmercury (MeHg) contamination in fish is a concern in the reservoir. While MeHg production has historically been attributed to sulfate-reducing bacteria and methanogenic archaea,...
GRiMeDB: The Global River Database Methane Database of concentrations and fluxes
Emily H. Stanley, Luke C. Loken, Nora J. Casson, Samantha K. Oliver, Ryan A. Sponseller, Marcus B. Wallin, Liwei Zhang, Gerard Rocher-Ros
2023, Earth System Science Data (15) 2879-2926
Despite their small spatial extent, fluvial ecosystems play a significant role in processing and transporting carbon in aquatic networks, which results in substantial emission of methane (CH4) into the atmosphere. For this reason, considerable effort has been put into identifying patterns and drivers of CH4 concentrations in streams and rivers...
Per- and polyfluoroalkyl substances (PFAS) in United States tapwater: Comparison of underserved private-well and public-supply exposures and associated health implications
Kelly Smalling, Kristin M. Romanok, Paul M. Bradley, Matthew Connor Morriss, James L. Gray, Leslie K. Kanagy, Stephanie Gordon, Brianna Williams, Sara Breitmeyer, Daniel Jones, Laura A. DeCicco, Collin Eagles-Smith, Tyler Wagner
2023, Environment International (178)
Drinking-water quality is a rising concern in the United States (US), emphasizing the need to broadly assess exposures and potential health effects at the point-of-use. Drinking-water exposures to per- and poly-fluoroalkyl substances (PFAS) are a national concern, however, there is limited information on PFAS in residential tapwater at the point-of-use,...
Evaluating pharmaceuticals and other organic contaminants in the Lac du Flambeau Chain of Lakes using risk-based screening techniques
Matthew A. Pronschinske, Steven R. Corsi, Celeste Hockings
2023, PLoS ONE (18)
In an investigation of pharmaceutical contamination in the Lac du Flambeau Chain of Lakes (hereafter referred to as “the Chain”), few contaminants were detected; only eight pharmaceuticals and one pesticide were identified among the 110 pharmaceuticals and other organic contaminants monitored in surface water samples. This...
Groundwater residence times in glacial aquifers—A new general simulation-model approach compared to conventional inset models
J. Jeffrey Starn, Leon J. Kauffman, Daniel T. Feinstein
2023, Scientific Investigations Report 2021-5142
Groundwater is important as a drinking-water source and for maintaining base flow in rivers, streams, and lakes. Groundwater quality can be predicted, in part, by its residence time in the subsurface, but the residence-time distribution cannot be measured directly and must be inferred from models. This report compares residence-time distributions...
Biogeochemical and hydrologic synergy control mercury fate in an arid land river-reservoir system
Brett Poulin, Michael T. Tate, Jacob M. Ogorek, Sara Breitmeyer, Austin K. Baldwin, Alysa Muir Yoder, Reed C. Harris, Jesse Naymik, Nick Gastelecutto, Charles Hoovestol, Christopher F. Larsen, Ralph Myers, George R. Aiken, David P. Krabbenhoft
2023, Environmental Science: Processes & Impacts
Reservoirs in arid landscapes provide critical water storage and hydroelectric power but influence the transport and biogeochemical cycling of mercury (Hg). Improved management of reservoirs to mitigate the supply and uptake of bioavailable methylmercury (MeHg) in aquatic food webs will benefit from a mechanistic understanding of inorganic divalent Hg...
National-scale assessment of total gaseous mercury isotopes across the United States
Michael T. Tate, Sarah E. Janssen, Ryan F. Lepak, Laura Elizabeth Flucke, David P. Krabbenhoft
2023, JGR Atmospheres (128)
With the 2011 promulgation of the Mercury and Air Toxics Standards by the U.S. Environmental Protection Agency, and the successful negotiation by the United Nations Environment Program of the Minamata Convention, emissions of mercury (Hg) have declined in the United States. While the declines in atmospheric Hg...
Simulation of monthly mean and monthly base flow of streamflow using random forests for the Mississippi River Alluvial Plain, 1901 to 2018
Benjamin J. Dietsch, William H. Asquith, Brian K. Breaker, Stephen M. Westenbroek, Wade H. Kress
2023, Scientific Investigations Report 2022-5079
Improved simulations of streamflow and base flow for selected sites within and adjacent to the Mississippi River Alluvial Plain area are important for modeling groundwater flow because surface-water flows have a substantial effect on groundwater levels. One method for simulating streamflow and base flow, random forest (RF) models, was developed...
Hydrodynamics structure plankton communities and interactions in a freshwater tidal estuary
Adrianne P Smits, Luke C. Loken, Erwin E Van Nieuwenhuyse, Matthew Young, Paul Stumpner, Leah Kammel, Jon R. Burau, Randy A Dahlgren, Tiffany Brown, April Hennessey, Steven Sadro
2023, Ecological Monographs (93)
Drivers of phytoplankton and zooplankton dynamics vary spatially and temporally in estuaries due to variation in hydrodynamic exchange and residence time, complicating efforts to understand controls on food web productivity. We conducted approximately monthly (2012–2019; n = 74) longitudinal sampling at 10 fixed stations along a freshwater...
Pesticide prioritization by potential biological effects in tributaries of the Laurentian Great Lakes
Samantha K. Oliver, Steven R. Corsi, Austin K. Baldwin, Michelle A. Nott, Gerald T. Ankley, Brett R. Blackwell, Daniel L. Villeneuve, Michelle Hladik, Dana W. Kolpin, Luke C. Loken, Laura A. DeCicco, Michael T. Meyer, Keith Loftin
2023, Environmental Toxicology and Chemistry (42) 367-384
Watersheds of the Great Lakes Basin (USA/Canada) are highly modified and impacted by human activities including pesticide use. Despite labeling restrictions intended to minimize risks to nontarget organisms, concerns remain that environmental exposures to pesticides may be occurring at levels negatively impacting nontarget organisms. We used...
Prioritizing pesticides of potential concern and identifying potential mixture effects in Great Lakes tributaries using passive samplers
Luke C. Loken, Steven R. Corsi, David Alvarez, Gerald T. Ankley, Austin K. Baldwin, Bradley D. Blackwell, Laura A. DeCicco, Michelle A. Nott, Samantha K. Oliver, Daniel L. Villeneuve
2023, Environmental Toxicology and Chemistry (42) 340-366
To help meet the objectives of the Great Lakes Restoration Initiative with regard to increasing knowledge about toxic substances, 223 pesticides and pesticide transformation products were monitored in 15 Great Lakes tributaries using polar organic chemical integrative samplers. A screening-level assessment of their potential for biological...
Machine learning for understanding inland water quantity, quality, and ecology
Alison P. Appling, Samantha K. Oliver, Jordan Read, Jeffrey Michael Sadler, Jacob Aaron Zwart
Thomas Mehner, Klement Tockner, editor(s)
2022, Book chapter, Encyclopedia of inland waters
This chapter provides an overview of machine learning models and their applications to the science of inland waters. Such models serve a wide range of purposes for science and management: predicting water quality, quantity, or ecological dynamics across space, time, or hypothetical scenarios; vetting and distilling raw data for further...
Simulation of heat flow in a synthetic watershed: Lags and dampening across multiple pathways under a climate-forcing scenario
Daniel T. Feinstein, Randall J. Hunt, Eric D. Morway
2022, Water (14)
Although there is widespread agreement that future climates tend toward warming, the response of aquatic ecosystems to that warming is not well understood. This work, a continuation of companion research, explores the role of distinct watershed pathways in lagging and dampening climate-change signals. It subjects a synthetic...
Green infrastructure in the Great Lakes—Assessment of performance, barriers, and unintended consequences
Nancy T. Baker, Daniel J. Sullivan, William R. Selbig, Ralph Haefner, David C. Lampe, E. Randall Bayless, Michael R. McHale
2022, Circular 1496
The Great Lakes Basin covers around 536,393 square kilometers, and the Great Lakes hold more than 5,400 cubic miles of water, accounting for more than 20 percent of the world’s fresh surface water supply. The Great Lakes provide a source of drinking water to tens of millions of people in...
Loss of street trees predicted to cause 6000 L/tree increase in leaf-on stormwater runoff for Great Lakes urban sewershed
Robert C. Coville, James Kruegler, William R. Selbig, Satoshi Hirabayashi, Stephen Loheid, William Avery, William Shuster, Ralph Haefner, Bryant C. Scharenbroch, Theodore A. Endreny, Dave Nowak
2022, Urban Forestry & Urban Greening (74)
Urban forests are recognized as a nature-based solution for stormwater management. This study assessed the underlying processes and extent of runoff reduction due to street trees with a paired-catchment experiment conducted in two sewersheds of Fond du Lac, Wisconsin. Computer models are flexible, fast, and low-cost options to generalize and...
Comparison of radium analytical methods for municipal drinking water well operation
Madeleine J Mathews, Sean R Scott, Randall J. Hunt, Matthew Ginder-Vogel
2022, Water Science and Engineering (4)
Radium (Ra) is a geogenic contaminant that occurs at high levels in the Midwestern Cambrian-Ordovician aquifer system (MCOAS), a regionally important sandstone and carbonate drinking water aquifer. Water utilities using the MCOAS often must adopt treatment methods or use alternative water sources to maintain high-quality drinking...
Assessment of mercury in sediments and waters of Grubers Grove Bay, Wisconsin
Evan J. Routhier, Sarah E. Janssen, Michael T. Tate, Jacob M. Ogorek, John F. DeWild, David P. Krabbenhoft
2022, Open-File Report 2022-1051
Mercury is a global contaminant that can be detrimental to wildlife and human health. Anthropogenic emissions and point sources are primarily responsible for elevated mercury concentrations in sediments and waters. Mercury can physically move and chemically transform in the environment, resulting in biomagnification of mercury, in the form of methylmercury,...
Response to comment on “Mercury isotope fractionation by internal demethylation and biomineralization reactions in seabirds: Implications for environmental mercury science”: Principles and limitations of source tracing and process tracing with stable isotope signatures
Alain Manceau, Romain Brossier, Sarah E. Janssen, Brett Poulin
2022, Environmental Science and Technology (56) 2065-2068
No abstract available. ...
Risk-based prioritization of organic chemicals and locations of ecological concern in sediment from Great Lakes tributaries
Austin K. Baldwin, Steven R. Corsi, Owen M. Stefaniak, Luke C. Loken, Daniel L. Villeneuve, Gerald T. Ankley, Brett R. Blackwell, Peter L. Lenaker, Michelle A. Nott, Marc A. Mills
2022, Environmental Toxicology and Chemistry (41) 1016-1041
With improved analytical techniques, environmental monitoring studies are increasingly able to report the occurrence of tens or hundreds of chemicals per site, making it difficult to identify the most relevant chemicals from a biological standpoint. For this study, organic chemical occurrence was examined, individually and as mixtures, in the context...
Use case development for earth monitoring, analysis, and prediction (EarthMAP)—A road map for future integrated predictive science at the U.S. Geological Survey
Tamara S. Wilson, Mark T. Wiltermuth, Karen E. Jenni, Robert Horton, Randall J. Hunt, Dee M. Williams, Vivian P. Nolan, Nicholas G. Aumen, David S. Brown, Kyle W. Blasch, Peter S. Murdoch
2022, Open-File Report 2021-1108
Executive SummaryThe U.S. Geological Survey (USGS) 21st-century science strategy 2020–30 promotes a bureau-wide strategy to develop and deliver an integrated, predictive science capability that works at the scales and timelines needed to inform societally relevant resource management and protection and public safety and environmental health decisions (U.S. Geological Survey, 2021)....
Quantifying regional effects of best management practices on nutrient losses from agricultural lands
Victor L. Roland II, Ana María García, David A. Saad, Scott W. Ator, Dale M. Robertson, Gregory E. Schwarz
2022, Journal of Soil and Water Conservation (77) 15-29
Nitrogen (N) and phosphorus (P) losses from agricultural areas have degraded the water quality of downstream rivers, lakes, and oceans. As a result, investment in the adoption of agricultural best management practices (BMPs) has grown, but assessments of their effectiveness at large spatial scales have lagged. This study applies regional...
Estimating urban air pollution contribution to South Platte River nitrogen loads with National Atmospheric Deposition Program data and SPARROW model
Gregory A. Wetherbee, Michael Wieczorek, Dale M. Robertson, David A. Saad, Jon Novick, Alisa Mast
2022, Journal of Environmental Management (301)
Air pollution is commonly disregarded as a source of nutrient loading to impaired surface waters managed under the Clean Water Act per states’ 303(d) list programs. The contribution of air pollution to 2017–2018 South Platte River nitrogen (N) loads was estimated from the headwaters to...
Integrating ecosystem metabolism and consumer allochthony reveals nonlinear drivers in lake organic matter processing
Meredith A. Holgerson, Rachel A. Hovel, Patrick T. Kelly, Lauren E Bortolotti, Jennifer A. Brentrup, Amber R Bellamy, Samantha K. Oliver, Alexander J Reisenger
2022, Limnology and Oceanography (67) S71-S85
Lakes process both terrestrial and aquatic organic matter, and the relative contribution from each source is often measured via ecosystem metabolism and terrestrial resource use in the food web (i.e., consumer allochthony). Yet, ecosystem metabolism and consumer allochthony are rarely considered together, despite possible interactions and...
Subsurface temperature properties for three types of permeable pavements in cold weather climates and implications for deicer reduction
Mari Danz, Nicolas Buer, William R. Selbig
2021, Water (13)
Permeable pavement has been shown to be an effective urban stormwater management tool although much is still unknown about freeze-thaw responses and the implications for deicer reduction in cold weather climates. Temperature data from the subsurface of three permeable pavement types—interlocking concrete pavers (PICP), concrete (PC), and asphalt (PA)—were...
Assessment of multiple ecosystem metabolism methods in an estuary
Luke C. Loken, Erwin E Van Nieuwenhuyse, Randy A Dahlgren, Leah Kammel, Paul Stumpner, Jon R. Burau, Steven Sadro
2021, Limnology & Oceanography: Methods (19) 741-757
Ecosystem metabolism is a key ecological attribute and easy to describe, but quantifying metabolism in estuaries is challenging. Properly scaling measurements through time and space requires consideration of hydrodynamics and mixing water from heterogeneous sources, making any estimation uncertain. Here, we compared three methods for modeling...