Harmless tags or hazardous ads? Investigating the potential for ear tags to increase predation on neonatal ungulates
Matthew T. Turnley, W. Sue Fairbanks, Robert Charles Lonsinger, Michael J. Cherry, Marlin M. Dart, Randy W. DeYoung, Derek P. Hahn, Levi J. Heffelfinger, Celine M.J. Rickels, Evan P. Tanner, H. George Wang, M. Colter Chitwood
2025, Canadian Journal of Zoology (82) 1-8
Studies involving individually marked animals provide insights predicated on the assumption marked individuals are accurate models of their unmarked counterparts. Taxa-specific and marker-specific examinations are needed to determine if marked animals are suitable models for the parameter(s) being measured. Our objective was to determine if brightly colored ear tags influenced...
Using imaging spectroscopy and elevation in machine learning to estimate soil salinity in intermittently tidal wetlands
German Silva, Dar Roberts, Kristin B. Byrd, Dana Chadwick, Ian Walker, Jennifer King
2025, Ecosphere (16)
Coastal soil salinization patterns are changing due to drought, sea level rise (SLR), and changing freshwater inflow. These changes are expected to impact coastal wetland plant health and ecosystem function, such as changes to biomass and productivity. These impacts have led to greater interest in how we monitor soil salinization...
A global dataset of terrestrial biological nitrogen fixation
Carla R. Reis Ely, Steven S. Perakis, Cory C. Cleveland, Duncan Menge, Sasha C. Reed, Sarah A. Batterman, Timothy E. Crews, Katherine A Dynarski, Maga G. Gei, Michael J. Gundale, Sarah E. Jovan, Sian Kou-Giesbrecht, Mark B. Peoples, Emilio Rodriguez-Caballero, Verity G. Salmon, Fiona M. Soper, Anika P. Staccone, Benton Taylor, Bettina Weber, Nina Wurzburger
2025, Scientific Data (12)
Biological nitrogen fixation (BNF) is the main natural source of new nitrogen inputs in terrestrial ecosystems, supporting terrestrial productivity, carbon uptake, and other Earth system processes. We assembled a comprehensive global dataset of field measurements of BNF in all major N-fixing niches across natural terrestrial biomes derived from the analysis...
Launching into societal benefits from the Surface Water and Ocean Topography (SWOT) mission
Margaret Srinivasan, Vardis Tsontos, Matthew Bonnema, Santiago Pena-Luque, Alexandre de Amorim-Teixiera, Alexandre Abdalla Araujo, Edward Beighley, Charon Birkett, Curtis Chen, Louise Croneborg-Jones, Cedric David, Shailen Desai, Alain Dib, Bradley Doorn, Robert W. Dudley, Bareerah Fatima, Luciana Fenoglio, Renato Prata de Moraes Frasson, Chandana Gangodagamage, Stephanie Granger, Isabel Houghton, Gregg Jacobs, Indu Jayaluxmi, Pierre-Yves Le Traon, Cassandra Nickles, Nicolas Picot, Guy Schumann, Babette Tchonang, Paula Torre Zaffaroni, Peter Van Oevelen, Jinbo Wang, Jerry Wegiel
2025, Water Resources Research (61)
The 10th Surface Water and Ocean Topography (SWOT) Applications Meeting, held one year after the satellite's launch, highlighted significant milestones in mission progress and showcased the innovative work of SWOT Early Adopters (EA) using mission data products. Over 100 participants from diverse sectors convened to discuss operational applications leveraging SWOT's...
Site response and wave propagation effects in the eastern United States
Stephen H. Hartzell, Luis B. Martinetti, Carlos Mendoza, Robert G. Schmitt
2025, Bulletin of the Seismological Society of America (115) 2485-2506
Fourier amplitude spectra from regional earthquakes in the eastern United States are used in a parametric inversion for source, path, and site effects. Five earthquakes are selected for analysis during the installation of the United States National Seismic Network (US), Earthscope’s USArray Transportable Array (TA), and other temporary arrays to...
High resolution mapping of submerged sediment size and suitable salmon spawning habitat using topo-bathymetric Lidar in the Santiam Basin, Oregon
James White, Karen Michelle Bartelt, Brandon Overstreet, Jacob Ryan Kelley
2025, Water Resources Research (61)
The distribution of river-bed grain sizes plays a foundational role in river morphology and ecology. River-bed grain size is a key driver of channel form and process, and has first order effects on aquatic macroinvertebrate assemblages, fish nesting, and biogeochemical processes. Despite this importance, tools to spatially quantify grain-size distributions,...
Coral restoration can drive rapid increases in reef accretion potential
Lauren T. Toth, Selena Anne-Marie Johnson, Erin O. Lyons, Jason Spadaro, Anastasios Stathakopoulos, Sierra Kathleen Bloomer, Jennifer Mallon, Connor Monroe Jenkins, Sara D. Williams, Ian Combs, Zachary Craig, Erinn Muller
2025, Scientific Reports (15)
Coral-reef degradation is disrupting the balance between reef accretion and erosion and threatening the persistence of essential coral-reef habitats. In south Florida, most reefs are already net eroding, and without intervention, valuable ecosystem services may be lost. Coral restoration holds the potential to reverse those trends; however, typical restoration monitoring...
Variable partitioning of lithium in rhyolitic melt during decompression and ascent
Madison Myers, Roberta Spallanzani, Darin Schwartz, Celestine N. Mercer, Behnaz Hosseini
2025, Economic Geology (120) 1191-1206
The partitioning behavior of Li in magmatic systems is increasingly being investigated due to the economic importance of Li in the transition to sustainable energy resources (e.g., batteries). However, at upper crustal pressures, it remains uncertain whether Li preferentially partitions into the vapor or liquid (brine) phase or remains in the...
Random forest regression models for estimating low-streamflow statistics at ungaged locations in New York, excluding Long Island
Timothy J. Stagnitta, Joshua Woda, Alexander P. Graziano
2025, Scientific Investigations Report 2025-5060
Models to estimate low-streamflow statistics at ungaged locations in New York, excluding Long Island and including hydrologically connected basins from bordering States, were developed for the first time by the U.S. Geological Survey, in cooperation with the New York State Department of Environmental Conservation. A total of 224 basin characteristics...
Representing 3-dimensional fuels for physics-based fire behavior models: A general framework and case study in a type-converted post-fire shrubfield
Niko Tutland, Andreas Paul Wion, Carolina Jasmine May, Grant C. Hutchings, Hope Nowak, James R. Gattiker, J. Kevin Hiers, Rodman R. Linn, Scott M. Pokswinski, Ellis Q. Margolis
2025, Fire Ecology (21)
Background Physics-based three-dimensional (3D) fire behavior models improve planning for prescribed fire application and wildfire mitigation, but require high spatial resolution 3D fuel models as inputs. While multiple methods and data sources for realistically representing 3D, heterogeneous fuels are available, no unifying framework exists to guide the use of these...
Decision-support modeling and research priorities for establishing baseline conditions for outstandingly remarkable values, Obed Wild and Scenic River, Tennessee
Elena R. Crowley-Ornelas, Rebecca Schapansky, Tom Blount, Niki S. Nicholas
2025, Open-File Report 2025-1035
The Obed River is the last undammed river in Tennessee. The Obed Wild and Scenic River is managed by the National Park Service and covers a protected area of the Obed River headwaters (including four contributing tributaries). The Obed Wild and Scenic River supports a unique ecosystem with eight federally...
Hydrologic budgets and water availability of six bedrock aquifers in the Black Hills area, South Dakota and Wyoming, 1931–2022
Colton J. Medler, Todd M. Anderson, William G. Eldridge
2025, Scientific Investigations Report 2025-5067
Population growth and recurring droughts in the Black Hills region raised interest in water resources and future availability. The Black Hills hydrology study (BHHS) was initiated in the early 1990s to address questions regarding water resources. Since completion of the BHHS in the early 2000s, the population of the Black...
The 3D Elevation Program—Supporting Tennessee’s economy
George Heleine
2025, Fact Sheet 2025-3037
Introduction The State of Tennessee has an area of approximately 42,100 square miles and includes six physiographic regions: Blue Ridge, Valley and Ridge, Appalachian Plateaus, Highland Rim, Nashville Basin, and the Gulf Coastal Plains. Up-to-date elevation data support key activities across the State, such as economic development, infrastructure and construction management,...
Food habits of Yellow Perch, Smallmouth Bass, and Northern Pikeminnow in Lake Cascade, Idaho
Bryce Marciniak, Mike Thomas, Jordan Messner, Matthew P. Corsi, Michael C. Quist
2025, North American Journal of Fisheries Management (45) 795-812
ObjectiveYellow Perch Perca flavescens was first encountered in Lake Cascade, Idaho, in 1957. Since its introduction, the abundance of Yellow Perch in Lake Cascade has been highly variable. Historically, declines in Yellow Perch abundance were attributed to predation by Northern Pikeminnow Ptychocheilus oregonensis. In the 1990s, Smallmouth Bass Micropterus dolomieu became established in Lake Cascade....
Stable isotope reference materials and scale definitions – Outcomes of the 2024 IAEA experts meeting
Federica Camin, Dinka Besic, Paul J. Brewer, Colin E Allison, Tyler B. Coplen, Philip J.H. Dunn, Matthias Gehre, Manfred Gröning, Harro A.J. Meijer, Jean-François Hélie, Paola Iacumin, Rebecca Kraft, Bor Krajnc, Steffen Kümmel, Sangil Lee, Juris Meija, Zoltan Mester, Joachim Mohn, Heiko Moossen, Haiping Qi, Grzegorz Skrzypek, Peter Sperlich, Joelle Viallon, Leonard I. Wassenaar, Robert I. Wielgosz
2025, Rapid Communications in Mass Spectrometry (39)
The participants of the 12th International Atomic Energy Agency (IAEA) meeting on stable isotope reference materials reached a consensus, acknowledging the existence and use of two carbon isotope delta scales: the VPDB (Vienna Peedee belemnite) scale and the VPDB-LSVEC (LSVEC - lithium carbonate prepared by H. J. Svec). Conversion models between...
Reaction kinetics and accelerant effects of sulfides in early mature hydrocarbon generation using hydrous pyrolysis
Tushar Adsul, Paul C. Hackley, Javin J. Hatcherian, Ryan J. McAleer, Carlin J. Green, Alan K. Burnham, Santanu Ghosh, Josef P. Werne, Atul K. Varma
2025, Journal of Analytical and Applied Pyrolysis (192)
Hydrocarbon generation in organic-rich sediments is influenced by the molecular organic composition and relative abundance of associated minerals. Certain mineral-derived elements act as catalysts and reaction intermediaries, facilitating early-stage hydrocarbon formation in potential source rocks. This study investigated the role of sulfur contributed from pyrite as an accelerant in thermal...
Climate and land use drivers of freshwater fish biodiversity in the northeastern United States
Jennifer B. Rogers, Graziella Vittoria DiRenzo, Rebecca M. Quiñones, Todd Richards, Allison H. Roy
2025, Biological Conservation (310)
Freshwater habitats can sustain high biodiversity, but habitat degradation, species invasion, and overexploitation have imperiled freshwater species. The multiple threats to freshwater habitats and changing stream characteristics due to climate change make it challenging to identify the drivers of fish vulnerability, especially given that the importance of drivers may vary...
Rapid Holocene deposition in the Mackenzie Trough and Barrow Canyon areas in the western Arctic Ocean
Masanobu Yamamoto, Kenta Suzuki, Masafumi Murayama, Laura Gemery, Koji Seike, Leonid Polyak, Young Jin Joe, Shoma Uchida, Minoru Kobayashi, J. Onodera, Keiji Horikawa, Yuhji Yamamoto, Takayuki Omori, Michinobu Kuwae, Tomohisa Irino, Yutaka Watanabe, Motoyo Itoh, Eiji Watanabe
2025, Progress in Earth and Planetary Science (12)
The Arctic Ocean and terrestrial environment have recently been reported to be changing drastically, but it is unclear whether these changes are similar to natural variations in the past or how sudden and large the changes are compared to natural variations. This premise served as motivation to collect sediment cores...
Arctic fold-and-thrust belts
Sergey S. Drachev, Andrey K. Khudoley, Iwona Klonowska, Jaroslaw Majka, Thomas E. Moore, Karsten Piepjohn, Andrey V. Prokopiev
2025, Book chapter, Geological Society of London Memoir
The modern Arctic has been formed through a series of continent–continent collisions, accretion of terranes and phases of crustal extension. The Neoproterozoic Timanian, Paleozoic Caledonian and Uralian, and late Mesozoic Verkhoyansk–Kolyma, Chukotkan and Brookian orogenies formed several large fold-and-thrust belts (FTBs). The FTBs are exposed across vast areas of continents...
Dietary bioavailability of uranium to a model freshwater invertebrate
Marie Noele Croteau, Christopher C. Fuller, Daniel J. Cain, Kate M. Campbell
2025, Environmental Science and Technology (59) 16641-16651
Uranium (U) mining increases environmental exposures. Understanding how U is taken up by organisms can aid in evaluating the potential for bioaccumulation and toxicity. Although the importance of aqueous geochemical speciation is well recognized for U bioavailability after dissolved exposures, far less is known about the processes controlling U bioavailability...
Contributions of erosion, deposition, and human activities to a change in sand storage in the bed of San Francisco Bay, California, 1980s to 2010s
Theresa A. Fregoso, Bruce E. Jaffe, Amy C. Foxgrover, Donald L. Woodrow, Bethany Kharrazi, Kevin Orzech
2025, Open-File Report 2025-1022
This study by the U.S. Geological Survey (USGS) provides estimates of the change in sand storage in bed sediments from the 1980s to 2010s in the San Francisco Bay area, California. The study is part of a larger project called “Research to Understand Impacts of Bay Sand Mining on Sand...
Valuing recreational fishing using creel survey statistics
Luke Boehm, Richard T. Melstrom, Kevin L. Pope
2025, Journal of the Agricultural and Applied Economics Association (4) 378-390
Recreation demand analysis has relied on mail and internet surveys to collect information on individual recreators. However, conducting these surveys is costly and time-consuming. Alternative sources that report aggregate visitation may go unused due to a lack of information about trip starting points. We set up and solve a system...
The conundrum of taxonomic uniformitarianism in planktic foraminifera
Harry J. Dowsett, Marci M. Robinson, Kevin M. Foley, Whittney Spivey
2025, Palaeontology (68)
Planktic foraminiferal species distributions in the modern ocean track environmental features like sea surface temperature (SST). Species shift their distributions as the marine environment changes, providing an analogue for past behaviour. Stationarity of species' ecological tolerances is therefore a first-order assumption of all palaeoenvironmental reconstructions based upon modern analogue methods....
Real-time oil spill concentration assessment through fluorescence imaging and deep learning
Biplab Poudel, Jiacheng Xie, Congyu Guo, Olivia Watt, Erin L. Pulster, Rishi J. Patel, Jeffery A. Steevens, Dong Xu
2025, Journal of Hazardous Materials (496)
Oil spills may pose severe ecological and socioeconomic threats, necessitating rapid and accurate environmental assessment. Traditional assessment methods used to determine the extent of a spill including gas chromatography-mass spectrometry, satellite imaging, and visual surveys, are often time-consuming, expensive, and limited by weather conditions or sampling constraints. Furthermore, these methods...
Reflections on a trio of North American earthquakes in 1925
Susan E. Hough, Maurice Lamontagne, John E. Ebel, L. Baise
2025, Seismological Research Letters (97) 548-563
In 1925, three moderately large damaging earthquakes occurred in North America over four months: the 28 February (local time; LT) M 6.2 Charlevoix, 27 June (LT) M 6.6 Montana, and 29 June M 6.5 Santa Barbara earthquakes. The centennial anniversaries of these events motivated this retrospective consideration focused on the ground motions generated by the three...
