Extremophile hotspots linked to containerized industrial waste dumping in a deep-sea basin
Johanna Gutleben, Sheila Podell, Kira Mizell, Douglas Sweeney, Carlos Neira, Lisa A. Levin, Paul R. Jensen
2025, PNAS Nexus (4)
Decaying barrels on the seafloor linked to DDT contamination have raised concerns about the public health implications of decades old industrial waste dumped off the coast of Los Angeles. To explore their contents, we collected sediment cores perpendicular to five deep-sea barrels. The concentration of DDT and its breakdown products...
Catchment prioritization for freshwater mussel conservation in the Northeastern United States based on distribution modelling
Rebecca S.M. O’Brien, Graziella Vittoria DiRenzo, Allison H. Roy, Jason Carmignani, Rebecca M. Quinones, Jennifer B. Rogers, Beth I. Swartz
2025, PLoS ONE (20)
Freshwater mussels are critical to the health of freshwater systems, but their populations are declining dramatically throughout the world. The limited resources available for freshwater mussel conservation necessitates the geographic prioritization of conservation-related actions. However, lack of knowledge about freshwater mussel spatial distributions hinders decision making in this context. In...
Evaluating mass flow meter measurements from chambers for greenhouse gas emissions from orphan wells and other point sources
Karl Haase, Nicholas J. Gianoutsos
2025, Atmospheric Measurement Techniques (18) 4207-4226
This study evaluates the performance of a rigid gas flux chamber equipped with a mass flow meter (MFM) for measuring gas emissions from leaking orphan wells and similar pressure-driven gas point sources. We conducted a series of laboratory and field experiments to evaluate the sensitivity, stability, and dynamic range of...
Effects of restoration work on Kootenai River Acipenser transmontanus (white sturgeon) critical habitat, Kootenai River, northern Idaho, 2011–22
Megan K. Kenworthy, Taylor J. Dudunake
2025, Scientific Investigations Report 2025-5071
Between 2011 and 2018, the Kootenai River Habitat Restoration Project, led by the Kootenai Tribe of Idaho, implemented restoration treatments to enhance the natural recruitment of the critically endangered Acipenser transmontanus (white sturgeon) and other fish native to the Kootenai River. These restoration treatments in the Straight and Braided Reaches...
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...
Changes in aeolian saltation cloud properties with wind speed and ripples
Madeline Margaret Kelley, Ian J. Walker, Mark W. Schmeeckle, Christy Swann, Ron Dorn, Michaela Roberts, Patrick O'Brien
2025, Aeolian Research (74)
Aeolian sediment transport shapes landscapes on Earth and other planetary surfaces, yet key uncertainties remain in how the near-bed saltation cloud responds to changing wind and surface conditions. Leveraging recent advances in image-based particle tracking, we conducted wind tunnel experiments using high-speed imaging and Particle Tracking Velocimetry to quantify sand...
Speleothem evidence for Late Miocene extreme Arctic amplification – An analogue for near-future anthropogenic climate change?
Stuart Umbo, Franziska Lechleitner, Thomas Opel, Sevasti Modestou, Tobias Braun, Anton Vaks, Gideon Henderson, Pete Scott, Alexander Osintzev, Alexander Kononov, Irina Adrian, Yuri Dublyansky, Alena Maria Giesche, Sebastian F.M. Breitenbach
2025, Climate of the Past (21) 1533-1551
The Miocene provides an excellent climatic analogue for near-future runaway anthropogenic warming, with atmospheric CO2 concentrations and global average temperatures similar to those projected for the coming century under extreme-emissions scenarios. However, the magnitude of Miocene Arctic warming remains unclear due to the scarcity of reliable proxy data. Here we use...
Avak Creek oil occurrence, North Slope, Alaska: Newly discovered oil seep on Native lands, near village of Utqiagvik
Palma J. Botterell, David W Houseknecht, Jody Brae Wycech, J. Mike Moldowan, Paul G. Lillis, Rebecca A. Smith, Kimberley Maher
2025, Conference Paper
An unknown occurrence of oil was detected near Avak Creek on Native lands on the North Slope of Alaska. Determining the source of oil was imperative for allowing stakeholders (Federal, State, and local government agencies and the landowner, an Alaska Native corporation) to make timely and informed decisions and mount...
Simple bagged movement models for telemetry data
Andrew B. Whetten, Trevor J. Hefley, David A. Haukos, Dustin E. Brewer
2025, Ecology and Evolution (15)
Determining which statistical methods are appropriate for data is both user and data dependent and prone to change as new methodology becomes available. This process encompasses model ideation, model selection, and determining appropriate use of statistical methods. Literature on models for animal movement emerging in the past two decades has...
Chinook salmon Oncorhynchus tshawytscha (Walbaum, 1792) life history influences how diagnostic cranial structures relate to fish length
Jeremy D. Romer, Kevin A. Stertz, Keiara Pham, Christina Amy Murphy
2025, Journal of Fish Biology
Diagnostic bones can aid in identification and size determination of fishes from ingested prey, archaeological remains or damaged specimens. We extracted diagnostic structures, including cleithra, dentaries, opercles and otoliths, from juvenile spring Chinook salmon (Oncorhynchus tshawytscha) from three distinct groups: hatchery, naturally produced and surrogate, representing shared genetics. Although our...
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...
Invasive predatory fish occupies highest trophic position leading to expansion of isotopic niches in a riverine food web
Olivia C. Hodgson, Sydney Stark, Megan K. Schall, Geoffrey D. Smith, Kelly Smalling, Tyler Wagner
2025, Ecology (106)
Invasive species are drivers of ecological change with the potential to reshape the structure and function of terrestrial and aquatic ecosystems. The invasive flathead catfish (Pylodictis olivaris) is an opportunistic predator that has established a rapidly growing population in the Susquehanna River, Pennsylvania, USA, since they were...
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...
Post-hatching maternal attendance in wild Burmese Pythons in southern Florida
Jacquelyn C. Guzy, Mark Robert Sandfoss, John-Kaarli M. Rentof, Judith E. Baird-Lujano, Genesis Aponte Santiago, Jose A. Torres, Lisa Marie McBride, Matthew Fox Metcalf, Amanda Marie Kissel, Christina Romagosa, Amy A. Yackel Adams, Brandon L. Welty, Melissa A. Miller, Matthew F. McCollister, Frank J. Mazzotti, Kristen Hart
2025, Herpetology Notes (18) 849-856
No abstract available....
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...
The U.S. Geological Survey, the U.S. Department of Defense, and the U.S. Intelligence Community—100 years of mapping and remote sensing collaboration, 1879–1979
Paul M. Young
2025, Circular 1552
IntroductionThe U.S. Geological Survey (USGS)—a Federal civilian agency—and U.S. military and intelligence agencies collaborate on mapping and remote sensing and have since the establishment of the USGS. The organizations exchange data and information and share technology to further their respective missions in service to the American people. Often referred to...
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...
Variation in gene expression across infection status and elevation in a Hawaiian honeycreeper
Loren Cassin-Sackett, Katherine Maria McClure, Taylor Callicrate, Eben H. Paxton, Robert C. Fleischer
2025, Ecology and Evolution (15)
Introduced pathogens exert novel selection on hosts, and although many host species have experienced drastic population declines in the absence of adaptation, some hosts have adapted to highly virulent pathogens. For instance, mosquitoes and Plasmodium relictum introduced to the Hawaiian Islands have resulted in extinctions and catastrophic population declines due to avian...
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...
