Spatially resolved source apportionment of per- and polyfluoroalkyl substances (PFAS) within a post-industrial river catchment
Patrick Byrne, William M. Mayes, Alun L. James, Sean Comber, Emma Biles, Alex L. Riley, Philip Verplanck, Lee Bradley
2025, Science of the Total Environment (1001)
Source apportionment of per- and polyfluoroalkyl substances (PFAS) in rivers is typically based on water concentrations, which cannot quantify PFAS loads or define geographical source areas. This study applied a river catchment-scale approach to identify PFAS source zones and assess the relative importance of industrial PFAS sources in the River...
Machine learning generated streamflow drought forecasts for the Conterminous United States (CONUS): Developing and evaluating an operational tool to enhance sub-seasonal to seasonal streamflow drought early warning for gaged locations
John C. Hammond, Phillip J. Goodling, Jeremy Alejandro Diaz, Hayley R. Corson-Dosch, Aaron Joseph Heldmyer, Scott Douglas Hamshaw, Ryan R. McShane, Jesse Cleveland Ross, Roy Sando, Caelan Simeone, Erik Smith, Leah Ellen Staub, David Watkins, Michael Wieczorek, Kendall C. Wnuk, Jacob Aaron Zwart
2025, Preprint
Forecasts of streamflow drought, when streamflow declines below typical levels, are notably less available than for floods or meteorological drought, despite widespread impacts. To address this gap, we apply machine learning (ML) models to forecast streamflow drought 1-13 weeks into the future at > 3,000 streamgage locations across the conterminous...
PFAS sampling activities in the U.S. Geological Survey national networks
Melissa L. Riskin, Bruce D. Lindsey, Ryan Conner McCammon
2025, General Information Product 260
Per- and polyfluoroalkyl substances (PFAS), frequently called “forever chemicals,” are used for a wide variety of industrial purposes and are often found in common household and industrial items such as firefighting foams, non-stick cookware, and water-resistant materials. The contamination of water, air, and soil by PFAS is a national and...
Sundial: A method for inferring image acquisition time from shadow orientation
Inhyeok Bae, Carl J. Legleiter, Elowyn Yager
2025, Earth Surface Processes and Landforms (50)
Aerial photography and satellite imagery can be used to characterize landscape change over time and help to understand how these changes are related to climate and hydrology. Publicly available optical imagery from sources such as the United States National Agricultural Imagery Program (NAIP) is particularly valuable in this context due...
Scenario projections of COVID-19 burden in the US, 2024-2025
Sara L Loo, Sung-mok Jung, Lucie Contamin, Emily Howerton, Samantha Bents, Harry Hochheiser, Michael Runge, Claire P. Smith, Erica Carcelén, Katie Yan, Joseph C. Lemaitre, Emily Przykucki, Clif McKee, Koji Sato, Allison Hill, Matteo Chinazzi, Jessica T. Davis, Clara Bay, Alessandro Vespignani, Shi Chen, Rajib Paul, Daniel Janies, Jean-Claude Thill, Sean Moore, T. Alex Perkins, Ajitesh Srivastava, Majd Al Aawar, Kaiming Bi, Shraddha Ramdas Bandekar, Anass Bouchnita, Spencer Fox, Lauren Ancel Meyers, Przemyslaw Porebski, Srinivasan Venkatramanan, Bryan Lewis, Jiangzhuo Chen, Madhav Marathe, Michal Ben-Nun, James Turtle, Pete Riley, Katriona Shea, Cécile Viboud, Justin Lessler, Shaun Truelove
2025, JAMA Network Open (8)
Importance COVID-19 remains a disease with high burden in the US, prompting continued debate about optimal targets for annual vaccination.Objective To project COVID-19 burden in the US for April 2024 to April 2025 under 6 scenarios of immune escape (20% and 50% per year) and levels of vaccine recommendation (no recommendation, vaccination...
Native crayfish shows high desiccation tolerance and potential to outcompete invader
Leah M. Bayer, Daniel D. Magoulick
2025, Biological Invasions (27)
Biological invasions threaten global biodiversity, with aquatic systems being particularly susceptible. Invasive crayfish drive native crayfish imperilment in North America and worldwide. Despite the probable increase in extreme hydrological events, the synergistic effects from invasive species and drought on crayfish are understudied. The invasion of Faxonius neglectus chaenodactylus in...
Reservoir operational strategies for sustainable sand management in the Colorado River
Gerard Lewis Salter, David J. Topping, Jianghao Wang, John C. Schmidt, Charles Yackulic, Lucas Bair, Erich R. Mueller, Paul E. Grams
2025, Water Resources Research (61)
Climate change and increasing societal demands for water pose challenges for the management of dam-regulated rivers. Management decisions impact the environment of these rivers, creating the need to balance societal needs with environmental conservation. Here we present a modeling framework that optimizes resource benefits within imposed water use goals for...
Effects of dietary selenium on the amphipod Hyalella azteca and the midge Chironomus dilutus
John M. Besser, Danielle M. Cleveland, David D. Harper, Rebecca A. Dorman, Aida Farag
2025, Environmental Toxicology and Chemistry
Chronic selenium (Se) water quality criteria are based primarily on dietary organoselenium exposure and subsequent reproductive effects in fish. Available chronic Se toxicity data suggests that invertebrates are less sensitive than fish, but chronic invertebrate studies are limited. We evaluated yeast-based diets for chronic toxicity studies with Hyalella azteca and Chironomus dilutus. Growth and...
Interrogating process deficiencies in large-scale hydrologic models with interpretable machine learning
Admin Husic, John Christopher Hammond, Adam N. Price, Joshua Roundy
2025, Hydrology and Earth System Sciences (29) 4457-4472
Large-scale hydrologic models are increasingly being developed for operational use in the forecasting and planning of water resources. However, the predictive strength of such models depends on how well they resolve various functions of catchment hydrology, which are influenced by gradients in climate, topography, soils, and land use. Most assessments...
Reduced Atlantic reef growth past 2 °C warming amplifies sea-level impacts
Chris T. Perry, Didier de Bakker, Alice Webb, Steeve Comeau, Ben Harvey, Chris Cornwall, Lorenzo Alvarez-Filip, Esmerelda Perez-Cervantes, John T Morris, Ian C. Enochs, Lauren Toth, Aaron O'Dea, Erin M. Dillon, Erik H, Meesters, William F. Precht
2025, Nature (646) 619-626
Coral reefs form complex physical structures that can help to mitigate coastal flooding risk1,2. This function will be reduced by sea-level rise (SLR) and impaired reef growth caused by climate change and local anthropogenic stressors3. Water depths above reef surfaces are projected to increase as a result, but the magnitudes...
Sources of water and salts for the Zuni Salt Lake in west-central New Mexico
Andrew J. Robertson, Jeff D. Pepin, Erin L. Gray, Jake W. Collison, Jeb E. Brown, Andre Ritchie, Grady Ball
2025, Scientific Investigations Report 2025-5057
The Zuni Salt Lake is located in a maar in west-central New Mexico and contains hypersaline water that has long been used by Native Americans for religious purposes and the collection of salt. There have been several investigations suggesting different sources for the water and salt to the lake. Springs,...
Energetic value of Arctic forage-sized fish with implications for a nearshore seabird predator
Ashley E. Stanek, Brian D. Uher-Koch, Kenneth H. Dunton, Vanessa R. von Biela
2025, Marine Biology (172)
Arctic cod (Boreogadus saida, also called polar cod) are considered the single most important Arctic forage fish due to their high abundance and nutritional quality. Because Arctic cod are strongly ice associated and prefer colder waters, their frequency in coastal waters has declined with warming, decreasing availability to nearshore predators....
Ecophysiology of two mesophotic octocorals intended for restoration: Effects of light and temperature
Kassidy Lange, Allisan Aquilina-Beck, Mark Mccauley, Julia Johnstone, Amanda Demopoulos, Thomas Greig, Jody M. Beers, Heather L. Spalding, Peter J. Etnoyer
2025, Limnology and Oceanography (70) 3309-3321
Light and temperature are driving forces that shape the evolution and physiology of mesophotic organisms. On the Mississippi-Alabama continental shelf, octocorals dominate the mesophotic seascape and provide habitat for many fish and invertebrate species. Gaps in knowledge regarding the fundamental physiological responses of these species to light and temperature are...
Hydrologic connectivity in floodplain systems: A multiscale review of concepts, metrics and management
Hafez Ahmad, Leandro E. Miranda, Corey Garland Dunn, Melanie R. Boudreau, Michael E. Colvin
2025, Hydrological Processes (39)
Hydrologic connectivity (HC), particularly in floodplain systems, is pivotal in regulating ecosystem services by facilitating the movement of nutrients, sediments, chemicals, and biota. However, human interventions such as dam construction, levee installation, water management practices, and alterations in vegetation have significantly disrupted natural HC patterns globally. To provide a structured entry...
Using satellite imagery and soil data to understand occurrences and migration of soil conditions harmful to archaeological sites on Jamestown Island, Virginia
Samuel H. Caldwell
2025, Scientific Investigations Report 2025-5074
Many know Jamestown Island, Virginia, hereafter referred to as “the Island,” located near the mouth of the James River into the Chesapeake Bay, as the home of the first permanent English settlement in North America. However, the Island is home to 15,000 years’ worth of cultural artifacts and archaeological sites....
To heal or not to heal?: 2. The moment-recurrence time behavior of repeating earthquakes in the 2011 Prague, Oklahoma aftershock sequence is consistent with laboratory healing rates
Kristina Okamoto, Heather Savage, Elizabeth S. Cochran, Emily Brodsky, Rachel E. Abercrombie
2025, JGR Solid Earth (130)
The timing and failure conditions of an earthquake are governed by the interplay between fault reloading and restrengthening. The moment-recurrence time behavior of repeating earthquakes can give observational estimates of fault healing rates; however, it is difficult to link these observed healing rates to laboratory studies of frictional healing in...
Environmental drivers of Greater Sage-grouse population trends over 25 years in Idaho, USA
Robert S. Arkle, David S. Pilliod, Michelle I. Jeffries, Justin L. Welty, Ann Moser, Ethan A. Ellsworth, Donald J. Major
2025, Ecosphere (16)
Greater Sage-grouse (Centrocercus urophasianus) populations have been in decline for decades across much of the US Intermountain West. However, findings from 25 years of lek counts in Idaho indicate that some populations are stable or even increasing. After accounting for potential biases in past lek count data, we sought to explain...
Spatial regimes provide ample early warning of tipping points
Craig R. Allen, Ahjond Garmestani, David G. Angeler, Lance Gunderson, Caleb Powell Roberts, S.M. Sundstrom, Daniel R. Uden, Jianguo Liu
2025, Advances in Ecological Research (73) 151-167
Accelerating global change is a hallmark of the Anthropocene, and the interaction of rapid change in climate, land use and land cover makes understanding the response of social-ecological systems to global change difficult to predict. Global change directly and indirectly affects both social-ecological systems and the landscapes in which they...
Sand provenance boundary in the Mu Us Sandy Land of northern China
Maotong Li, Junsheng Nie, Haobo Zhang, Katharina I Pfaff, Zengjie Zhang
2025, Geomorphology (490)
Desert dunes are often assumed to have uniform mineral compositions due to extensive mixing during lateral transport, which complicates provenance studies. The Mu Us Sandy Land in north-central China, near the East Asian summer monsoon precipitation boundary, experiences a wetter climate than most deserts. Climate wetting as a result of...
Warming induces unexpectedly high soil respiration in a wet tropical forest
Tana E. Wood, Colin Lee Tucker, Aura M. Alonso-Rodríguez, M. Isabel Loza, Iana F. Grullón-Penkova, Molly A. Cavaleri, Christine S. O'Connell, Sasha Reed
2025, Nature Communications (16)
Tropical forests are a dominant regulator of the global carbon cycle, exchanging more carbon dioxide with the atmosphere than any other terrestrial biome. Climate models predict unprecedented climatic warming in tropical regions in the coming decades; however, in situ field warming studies are severely lacking in tropical forests. Here we...
Model‐based decomposition of spatially varying temporal shifts in seasonal streamflow across north temperate US rivers.
Kevin M. Collins, Erin M. Schliep, Tyler Wagner, Christopher K. Wikle
2025, Water Resources Research (61)
Anthropogenically forced climate shifts disrupt the seasonal behavior of climatic and hydrologic processes. The seasonality of streamflow has significant implications for the ecology of riverine ecosystems and for meeting societal demands for water resources. We develop a hierarchical Bayesian model of daily streamflow to quantify how the...
Potential for hydroacoustic technology to describe physical habitat for imperilled native freshwater mussels
Jenny L. Hanson, Jayme Stone, Lisie Kitchel, Jesse Weinzinger, Teresa J. Newton
2025, Ecohydrology (18)
The lack of information on what constitutes suitable habitat for native freshwater mussels can limit restoration efforts. While many species reside in silt–sand–gravel substrates, species such as the Spectaclecase (Cumberlandia monodonta) and Salamander (Simpsonaias ambigua) mussels are thought to be associated with rock structures (e.g., wing dams...
The influence of nodule versus crust morphology on the composition of seamount-hosted ferromanganese minerals
Kira Mizell, Emily Piper, Terrence Blackburn, Amy Gartman
2025, Conference Paper
Ferromanganese mineral precipitation in the global oceans is ubiquitous, occurring in the form of both crusts and nodules at a broad range of depths and seafloor terrains. Although ferromanganese crusts and nodules are both composed of ferromanganese minerals, mineralogy and mean element concentrations compiled for regional crust versus nodule occurrences...
Fluid evolution and timing of the Stibnite-Yellow Pine district, Idaho
Mitchell M. Bennett, Erin E. Marsh, Heather A. Lowers
2025, Conference Paper
Gold, antimony, and tungsten resources of the Stibnite-Yellow Pine district, Idaho, are hosted in complexly faulted Late Cretaceous Atlanta Lobe of the Idaho batholith and surrounding Neoproterozoic-Paleozoic metamorphic rocks. This study utilizes detailed petrography and trace element chemistry of quartz to establish relative timing relationships between successive ore forming events...
Paleoproterozoic vein graphite mineralization caused by decarbonation in the Ruby Range, Montana, USA
George N.D. Case, Jay Michael Thompson, S. P. Regan
2025, Conference Paper
Hydrothermal graphite veins are a possible source for modern battery materials and require better understanding of their carbon source(s) and absolute timing to develop mapable criteria for exploration models. We present new observations of graphite vein and alteration paragenesis and U-Pb LA-ICP-MS titanite age data from the Ruby prospect, Montana,...
