Seasonal synchronicity and multi-decadal stability of headwater biogeochemistry in the northern temperate zone
Tamara K. Harms, Jim Hood, Mark David Scheuerell, Irena F. Creed, John L. Campbell, I. J. Fernandez, S. N. Higgins, Sherri L. Johnson, James B. Shanley, Stephen Sebestyen, K. L. Webster, H. Yoa
2025, Biogeochemistry (168)
Temporal patterns in chemistry of headwater streams reflect responses of water and elemental cycles to perturbations occurring at local to global scales. We evaluated multi-scale temporal patterns in up to 32 y of monthly observations of stream chemistry (ammonium, calcium, dissolved organic carbon, nitrate, total dissolved phosphorus, and sulfate) in...
Analysis of a human-mediated microbioinvasion: The global spread of the benthic foraminifer Trochammina hadai Uchio, 1962
Mary McGann, Maria Holzmann, Vincent M.P. Bouchet, Sibelle Trevisan Disaró, Patricia P.B. Eichler, David W. Haig, Stephen J. Himson, Hiroshi Kitazato, Jean-Charles Pavard, Irina Polovodova Asteman, Andre R. Rodrigues, Clement M. Tremblin, Masashi Tsuchiya, Mark A. Williams, Phoebe O'Brien, Josefin Asplund, Malou Axelsson, Thomas Lorenson
2025, Journal of Micropalaeontology (44) 275-317
A non-indigenous species (NIS) of benthic foraminifera was first identified in a core collected in 1993 in San Francisco Bay, California, USA, and subsequently identified as Trochammina hadai Uchio, 1962. Archived samples and literature reviews were used to determine that the species, which is native to Asia, arrived in San Francisco Bay...
Evaluation of polymer-based dust palliatives in soil and stormwater runoff in an arid environment
Angela Paul, Erin L. Orozco-Whitaker, S. Shamsuddin, Peng Xiang, Eric Landry
2025, Archives of Environmental Contamination and Toxicology (89) 239-251
Dust palliatives are used to reduce fugitive dust in areas susceptible to erosion by wind and rain. In 2015, the Bureau of Land Management (BLM) temporarily approved the use of polymer-based dust palliatives during the construction and operation of a solar energy facility and, in 2019, on a mining access...
Seasonal variation in bay-marsh sediment exchange through a back-barrier salt marsh tidal creek
G.A. Snedden, S. Jarrell Smith
2025, Limnology and Oceanography (70) 3143-3154
Salt marsh resilience to sea-level rise largely depends on the balance of sediment exchanges with surrounding bays. In this study, we investigate mechanisms that determine residual sediment fluxes using continuous measurements of bay-marsh sediment exchange conducted in a tidal creek spanning 13 months (753 tidal cycles) in an intertidal marsh recently...
Mitigating flood risks in urban estuaries: Tidal dynamics, shoreline hardening, nature-based solutions, and floodgates in San Francisco Bay
Kees Nederhoff, Rohin Saleh, Patrick L. Barnard, Mark T. Stacey
2025, Journal of Waterway, Port, Coastal, and Ocean Engineering (151)
Hydrodynamic models are valuable tools for understanding the primary factors influencing daily and peak water levels and for guiding discussions on potential adaptation strategies for managing flood risk in coastal areas. This analysis uses the Delft3D San Francisco Bay-Delta Community Model to simulate water levels and incorporates the effects of...
Framework developed for geomorphic mapping of Fern Ridge Lake, Oregon, 2023
Mackenzie K. Keith, Heather D. Bervid
2025, Data Report 1215
The construction and operation of large reservoirs in the Willamette River Basin, Oregon, influences important cultural, biological, and other natural or economic resources in affected river corridors. The present-day landforms and cover within the reservoirs have been shaped by a variety of processes, including the pre-dam valley setting and geomorphic...
Placing environmental DNA monitoring for new detections into perspective: Fishes in the Milwaukee River, Wisconsin
Richard A. Erickson, Patrick W. DeHaan, Nicholas K. Frohnauer, Cari-Ann Hayer, Keta L. Oettinger, Tariq Tajjioui, Kyle M. Von Ruden, Hailey M. Willner, Stephen Frank Spear
2025, Journal of Wildlife Management (89)
Invasive species management frameworks, such as the early detection of and rapid response to invasive species, use monitoring programs to detect new species occurrences. Resource managers use environmental DNA (eDNA) as one tool for these monitoring programs. An eDNA detection in a new location may lack perspective for resource managers...
Exploring the importance of metapopulation dynamics with population control strategies for invasive silver carp in the upper Mississippi River
Kassidy Frame, Gregory J. Sandland, Charles J. Labuzzetta, Grace L. Loppnow, Jessica C. Stanton, Yu-Chun Kao, Richard A. Erickson
2025, Journal of Wildlife Management (89)
Invasive bigheaded carps (Bighead Carp Hypophthalmichthys nobilis, Silver Carp Hypophthalmichthys molitrix, and their hybrids Hypophthalmichthys spp.) currently infest the Mississippi River Basin. Bigheaded carps can outcompete native species in invaded waters and can also transform the surrounding environment. Currently, resource managers seek to limit the population abundance of bigheaded carps and their range expansion...
Bioaccumulation and transfer of per- and polyfluoroalkyl substances (PFAS) in a stream and riparian food web contaminated by food processing wastewater
Christopher James Kotalik, Laura E. Hubbard, Brittany G. Perrotta, David M. Walters, Dana W. Kolpin, James L. Gray, Alison M. Zachritz, Johanna M. Kraus, Carrie E. Givens, Gary A. Lamberti, Karen A. Kidd
2025, Environmental Science & Technology (59) 19444-19456
We evaluated the bioaccumulation and transfer of per- and polyfluoroalkyl substances (PFAS) in a stream food web contaminated by a food processing facility. Abiotic (i.e., water, sediment, and foam) and biotic (i.e., algae, aquatic insect larvae and adults, fish, and riparian spiders) matrices were sampled upstream and downstream of the...
Clarifying the trophic state concept to advance macroscale freshwater science and management
Michael Frederick Meyer, Benjamin M. Kraemer, Carolina C. Barbosa, Davi G.F. Cuhna, Walter Dodds, Stephanie E. Hampton, César Ordóñez, Rachel M. Pilla, Amina Pollard, Joshua A. Culpepper, Alexander K. Fremier, Tyler V. King, Robert Ladwig, Dina M. Leech, Shin-Ichiro S. Matsuzaki, Isabella Oleksy, Simon N. Topp, Richard Woolway, Ludmila S Brighenti, Kate Colleen Fickas, Brian P. Lanouette, Jianning Ren, Mortimer Werther, Xiao Yang
2025, Ecosphere (16)
For over a century, ecologists have used the concept of trophic state (TS) to characterize an aquatic ecosystem's biological productivity. However, multiple TS classification schemes, each relying on a variety of measurable parameters as proxies for productivity, have emerged to meet use-specific needs. Frequently, chlorophyll a, phosphorus, and Secchi depth...
Assessment of natural gas pipeline construction on stream temperature and turbidity in southwestern Virginia, 2017—25
Brendan M. Foster, Carly Marcella Maas, Alejandra Logan Flota
2025, Preprint
The natural gas pipeline network in the United States is extensive and often intersects streams and other sensitive habitats, yet there are limited case studies utilizing a comparative upstream-downstream approach to evaluate potential short- and long-term effects of pipeline stream crossing construction from pre-construction to post-site restoration. In 2017, the...
An integrated sensor network and data driven approach to satellite remote sensing of dissolved organic matter
Dulcinea Marie Avouris, Erin L Hestir, Jacob Fleck, Jeffrey A. Hansen, Brian A. Bergamaschi
2025, Earth and Space Science (12)
Traditional remote sensing retrieval models for water quality have historically relied on limited, localized data sets due to the prohibitive costs of extensive field campaigns and logistical challenges of collecting match-up data with satellite overpasses. As a result, these models often lack generalizability across seasons, tides, and sites. Furthermore, small...
Impacts of lake elevation decline on spawning habitat of a critical, native forage species
Sarah Barnes, Robert Al-Chokhachy, Phaedra Budy
2025, Transactions of the American Fisheries Society (154) 640-656
ObjectiveLake elevation decline is a global phenomenon with pronounced effects in arid regions that changes the characteristics of nearshore habitat area available to lacustrine spawners, potentially impacting recruitment and whole-lake food web dynamics. Our objective was to understand the potential effects of lake elevation decline on spawning habitat for the...
Clarifying the trophic state concept to advance macroscale freshwater science and management
Michael Frederick Meyer, Benjamin M. Kraemer, Carolina C. Barbosa, Davi G.F. Cuhna, Walter Dodds, Stephanie E. Hampton, César Ordóñez, Rachel M. Pilla, Amina Pollard, Joshua A. Culpepper, Alexander K. Fremier, Tyler V. King, Robert Ladwig, Dina M. Leech, Shin-Ichiro S Matsuzaki, Isabella Oleksy, Simon N. Topp, R. Iestyn Woolway, Ludmila S. Brighenti, Kate Fickas, Brian P. Lanouette, Jianning Ren, Mortimer Werther, Xiao Yang
2025, Ecosphere (16)
For over a century, ecologists have used the concept of trophic state (TS) to characterize an aquatic ecosystem's biological productivity. However, multiple TS classification schemes, each relying on a variety of measurable parameters as proxies for productivity, have emerged to meet use-specific needs. Frequently, chlorophyll a, phosphorus, and Secchi depth...
Satellite tracking reveals heavy use of local MPAs by green turtles (Chelonia mydas) nesting in southeast Florida, USA
Glenn D. Goodwin, Kristen Hart, Abby C. Evans, Derek A. Burkholder
2025, Marine Biology (172)
Florida hosts a regionally important nesting aggregation of green turtles (Chelonia mydas) in the North Atlantic, yet internesting and post-nesting movements for this rookery remain poorly understood. Here, we used satellite telemetry to track 23 green turtles nesting on southeast Florida beaches from 2017 to 2021 to investigate their spatial...
Comparison of creek and bay influences on salt marsh sediment budget and deposition patterns
Lukas T. WinklerPrins, Jessica R. Lacy, Mark T. Stacey, Karen M. Thorne, McKenna Leigh Bristow, Scott Jones
2025, Earth Surface Processes and Landforms (50)
The resilience of salt marshes with low organic production depends on their effective capture and retention of mineral sediment from adjacent waters. Little prior work has directly compared mechanisms of sediment import from wave-influenced marsh boundaries against those of tidal creeks. We used simultaneous deployment of net-deposition tiles and oceanographic...
A spatiotemporal deep learning approach for predicting daily air-water temperature signal coupling and identification of key watershed physical parameters in a montane watershed
Mohammad Reza M. Behbahani, David M. Rey, Martin A. Briggs, Amvrossios Bagtzoglou
2025, Journal of Hydrology (663)
Seasonal shifts from runoff to groundwater dominance influence daily headwater stream temperatures, especially where local groundwater input is strong. This input buffers temperature during hot periods, supporting cold-water habitats. Recent studies use air–water temperature signal metrics to identify zones of...
Refining PAH and PCB bioavailability predictions in industrial sediments using source-fingerprinting, particle size, and bulk carbon, Puget Sound, Washington
Kathleen Conn, Andrew R. Spanjer, Renee Takesue
2025, Marine Pollution Bulletin (222)
Nearshore marine sediments in a Puget Sound, Washington industrial embayment had elevated levels of PAHs, PCBs and DDTs. Chemical fingerprints implicated nearshore sources including creosote, industrial oil and tar waste, and a landfill. Elevated concentrations were confined to an approximate 300-m shoreline buffer in the industrial waterfront, suggesting high site...
Fluvial sediment dynamics in the Shoshone River and tributaries around Willwood Dam, Park County, Wyoming
Jason S. Alexander, Haylie Brown, Cheryl A. Eddy-Miller, Jason Burckhardt, Laura Burckhardt, Christopher A. Ellison, Carmen McIntyre, Travis Moger, Lindsay Patterson, Chace Tavelli, David Waterstreet, Mahonri Williams
2025, Scientific Investigations Report 2025-5077
Sedimentation affects many of the aging reservoirs in the United States. Dams and water diversions from rivers have been central elements of infrastructure supporting agricultural irrigation in the arid and semiarid regions of the Western United States for more than a century. The Willwood Irrigation District diversion dam (hereafter referred...
Projecting stream water quality using Weighted Regression on Time, Discharge, and Season (WRTDS): An example with drought conditions in the Delaware River Basin
Christopher Green, Robert M. Hirsch, Hedeff Essaid, Ward E. Sanford
2025, Science of the Total Environment (999)
Future water availability depends on understanding the responses of constituent concentrations to hydrologic change. Projecting future water quality remains a methodological challenge, particularly when using discrete observations with limited temporal resolution. This study introduces Weighted Regression on Time, Discharge, and Season for Projection (WRTDS-P), a novel, computationally efficient method that...
National Park Service staff perspectives on how climate change affects visitor use
Sarah Lynn Rappaport Keener, Emily J. Wilkins, Wylie Carr, Samantha G. Winder, Julianne Reas, Daniela B. Daniele, Spencer A. Wood
2025, People and Nature (7) 2346-2360
1. Many public lands, including those managed by the U.S. National Park Service(NPS), have the purpose of conserving natural and cultural resources and providing opportunities for visitors to recreate in and enjoy these areas. Achieving this mission becomes more challenging as drought, flooding, increasing temperatures and other climatic change effects...
Regional high-frequency monitoring revealed chloride concentrations in exceedance of ecological benchmarks in urban streams across the Delaware River Basin, USA
Rosemary M. Fanelli, Michelle Morency, Brandon J. Fleming, Joel Moore, Deanna Hardesty, Megan E. Shoda
2025, Environmental Monitoring and Assessment
Rising chloride concentrations pose critical risks to freshwater stream ecosystems in temperate regions like the Delaware River Basin (DRB), USA, where winter deicer applications (i.e., road salt) are common. Increasing chloride concentrations have been documented in the region, but the extent to which chloride exceeds regulatory benchmarks remains unclear because...
Dispersal and survival of sea lamprey in Lake Erie and connected waterways
Sean Alois Lewandoski, Christopher Holbrook
2025, Canadian Journal of Fisheries and Aquatic Sciences (82) 1-13
Invasive sea lamprey inhabiting the North American Laurentian Great Lakes are the target of the world’s longest running vertebrate invasive species control program. However, metapopulation dynamics comprising survival and dispersal during the sea lampreys’ lake-resident life stages are poorly understood. We applied acoustic telemetry and continuous-time multistate capture-recapture modeling to...
Breaking down Palila decline: Assessing the role of drought and vegetation health in the population loss of an endangered Hawaiian honeycreeper
Erica M. Gallerani, Richard J. Camp, Paul C. Banko, Austin Madson, Chunyu Dong, Lucas Fortini, Zhimin Ma, Thomas W. Gillespie
2025, Global Ecology and Conservation (62)
The Palila (Loxioides bailleui), the last member of the once speciose finch-billed Hawaiian honeycreeper clade (Drepanidinae) in the main Hawaiian Islands, faces critical conservation challenges as an endangered species. Understanding the drivers of its decline is essential for effective management. We used additive decomposition models to examine temporal trends in...
U.S. Geological Survey monitoring milestones—Chagrin River at Willoughby, OH (04209000)
Claire Bunch
2025, General Information Product 261
The Chagrin River at Willoughby, OH (04209000), streamgage is the 1,000th U.S. Geological Survey (USGS) streamgage to reach Centennial status. Centennial Streamgages are USGS streamgages that have been in operation for 100 years or more. Collecting water data since 1925, it celebrated its 100th birthday on August 1, 2025....
