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Ecogeomorphologic response of a tidally restricted salt marsh to tidal restoration and sea-level rise Ecogeomorphologic response of a tidally restricted salt marsh to tidal restoration and sea-level rise
Diked marshes with decades of restricted tidal flow exhibit fundamentally altered hydrologic and ecologic dynamics that result in limited vertical accretion, land subsidence, and underdeveloped tidal channels. These changes complicate marsh restoration efforts and constrain the marsh's ability to build elevation in response to future sea levels. In this study, we developed an integrated
Authors
Kasra Naseri, Michelle A. Hummel, Kevin M. Befus, Timothy P. Smith, Meagan J. Eagle, Kevin D. Kroeger
Fipronil baits as emerging tools for flea control and plague mitigation: Experiments with cricetid mice on prairie dog colonies Fipronil baits as emerging tools for flea control and plague mitigation: Experiments with cricetid mice on prairie dog colonies
Plague is a zoonotic disease of mammalian hosts and flea vectors. Wildlife biologists most commonly mitigate plague by controlling flea populations. We evaluated the efficacy of edible baits for systemic flea control with two cricetid species on colonies of black-tailed prairie dogs (Cynomys ludovicianus): the western deer mouse (Peromyscus sonoriensis) and the northern grasshopper mouse
Authors
David A. Eads, Travis Livieri, Marc R. Matchett, Madisen Hartlaub, Jason Fly, Michelle L. Hladik, Shelli A. Dubay, Paul Roghair, Brooke Fricke, Phillip Dobesh, Ashley Merkel, Eddie Childers, John P. Hughes, Dean E. Biggins
Lunar-VISE landing site selection and characterization at Mons Gruithuisen Gamma Lunar-VISE landing site selection and characterization at Mons Gruithuisen Gamma
The Lunar Vulkan Imaging and Spectroscopy Explorer (Lunar-VISE) was selected for a Commercial Lunar Payload Services (CLPS) delivery to the Gruithuisen domes region of the Moon as part of NASA’s Payloads and Research Investigation on the Surface of the Moon (PRISM) program. The Gruithuisen domes are chemically and morphologically distinct from their surroundings with a thorium-rich...
Authors
Jean-Pierre Williams, Margaret E. Landis, Kristen A. Bennett, Sarah Valencia, Kerri L. Donaldson Hanna, Adrienne Dove, Patrick O'Brien, Erwan Mazarico, Javier Benavente, Brett W. Denevi, Justin Hagerty, Craig Hardgrove, Paul O. Hayne, Lena Heffernan, Adam LaMee, Thomas H. Prettyman, Katherine A. Shirley, Matthew A. Siegler, Jessica M. Sunshine, John S. Karcz, Maria E. Banks
Toxoplasma gondii: Challenges and perspectives in interpreting longitudinal seroprevalence data for a chronic parasitic infection Toxoplasma gondii: Challenges and perspectives in interpreting longitudinal seroprevalence data for a chronic parasitic infection
Toxoplasma gondii—the causative agent of toxoplasmosis—is a zoonotic pathogen of warm-blooded hosts. Infection causes mild-to-severe symptoms, including lethargy, fever, muscle pain, abortion, ocular disease, and encephalitis. Toxoplasma affects many vertebrate species, although felids are the only known definitive hosts. Seroprevalence in wildlife is often assessed using cross-sectional...
Authors
Kendall L. Bancroft, Connor J. Meyer, Emily J. Jenkins, Paul C. Cross, Randy W. DeYoung, Aaron M. Foley, Miranda L. Hopper, Kevin T. Lovasik, Landon N. Schofield, Bryan D. Spencer, Michael J Cherry, Alynn M. Martin
A cross-site comparison of ecosystem- and plot-scale methane fluxes across multiple sites A cross-site comparison of ecosystem- and plot-scale methane fluxes across multiple sites
Wetland and upland ecosystems play significant but opposing roles in the global methane (CH4) budget, acting as natural sources and sinks, respectively. Two of the most common approaches for measuring CH4 fluxes (FCH4) are chambers, which measure fluxes at fine spatial scales (ca. 1 m2), and eddy covariance (EC) towers, which integrate fluxes across larger footprints (ca. 100–10 000 m2)...
Authors
Tiia Määttä, Ankur R. Desai, Masahito Ueyama, Rodrigo Vargas, Eric J. Ward, Zhen Zhang, Gil Bohrer, Kyle Delwiche, Etienne Fluet-Chouinard, Järvi Järveoja, Sara H. Knox, Lulie Melling, Mat B. Nilsson, Matthias Peichl, Angela Che Tang, Eeva-Stiina Tuittila, Jinsong Wang, Sheel Bansal, Sarah Feron, Manuel Helbig, Aino Korrensalo, Karen W. Krauss, Gavin McNicol, Shuli Niu, Zutao Ouyang, Kathleen Savage, Oliver Sonnentag, Robert Jackson, Avni Malhotra
Conflicts and collisions with an endangered carnivore: Landscape drivers and spatial risk pattern Conflicts and collisions with an endangered carnivore: Landscape drivers and spatial risk pattern
Human–wildlife conflicts and anthropogenic mortality are expected to increase with the continuous encroachment on natural habitats within and around protected areas, yet the processes governing these risks remain poorly understood. We investigated the spatiotemporal dynamics and drivers of two distinct processes involving the endangered Florida panther (Puma concolor coryi; hereafter...
Authors
Marta Prat-Guitart, David P. Onorato, James E. Hines, Madan K. Oli
Non-destructive sampling of larval amphibians shows tail tissues reflect whole-body methylmercury concentrations and trophic-related differences in bioaccumulation Non-destructive sampling of larval amphibians shows tail tissues reflect whole-body methylmercury concentrations and trophic-related differences in bioaccumulation
Mercury (Hg), and specifically methylmercury (MeHg), is a contaminant of global concern to humans and wildlife, but there is still limited understanding of its effects on many taxa. Amphibians are closely associated with water, where Hg is converted to MeHg, and high concentrations of MeHg can reduce survival of amphibians in the wild. However, limited non-lethal proxies exist for...
Authors
Brian J. Tornabene, Blake R. Hossack, Daniel A. Grear, Thomas L. Anderson, Brad Glorioso, Hardin Waddle, Jon D Davenport, Collin Eagles-Smith, Caitlin T. Rumrill, Kelly L. Smalling
A scanning electron microscope-energy dispersive spectrometry (SEM-EDS) method for the quantitative analysis of common volcanic phases A scanning electron microscope-energy dispersive spectrometry (SEM-EDS) method for the quantitative analysis of common volcanic phases
In situ microanalysis by X-ray spectrometry is a fundamental geochemical technique for volcanology and the geosciences generally and typically performed using an electron microprobe (EPMA) equipped with wavelength dispersive spectrometers (WDS). The related technique of energy dispersive spectrometry (EDS), implemented using either EPMA or a scanning electron microscope (SEM), offers...
Authors
Nathan Lee Andersen, Heather Brianne Winslow
Weathering the ride: Associations of heat, smoke, precipitation, and ozone with bus ridership in Colorado Weathering the ride: Associations of heat, smoke, precipitation, and ozone with bus ridership in Colorado
Weather and climate variability increasingly shape urban travel behavior, yet the short-term temporal dynamics and contextual modifiers of weather-transit relationships remain poorly understood. We analyzed system-wide hourly bus ridership in the Denver metropolitan area from June 2022 through September 2023 using fixed-effects negative binomial distributed lag nonlinear models with lags...
Authors
Priyanka deSouza, Elizabeth A. Dzwonczyk, Peter Christian Ibsen, Adam M. Lippert, Carl Green, T.C. Chakraborty, Melissa R. McHale, Peter Anthamatten, Ebru Altintas, Carrie Makarewicz
Tectonically driven integration of the 4.8 Ma Colorado River USA tracked with detrital sanidine and fish genetics Tectonically driven integration of the 4.8 Ma Colorado River USA tracked with detrital sanidine and fish genetics
The development of the continental-scale Colorado River system, western USA, from 8 to 4.8 Ma, is revealed using 60-40 Ma detrital sanidine tracer grains and fish phylogeny. Here we show that precursor paleoriver segments became integrated north to south as traced by 60-40 Ma sand grains that were derived from the north and sequentially appeared in the 25-8 Ma Browns Park Formation of...
Authors
K. E. Karlstrom, M. Heizler, A. Aslan, Ian W. Hillenbrand, S. Cather, T. F. Turner, M. Osborne, C. D. Henry, L. J. Crossey
Determination of baseline water-quality conditions using continuous specific conductance and discrete measurements of total dissolved solids and selected major ions, Arkansas River Basin, Colorado Determination of baseline water-quality conditions using continuous specific conductance and discrete measurements of total dissolved solids and selected major ions, Arkansas River Basin, Colorado
From 2022 through 2024, the U.S. Geological Survey (USGS) in cooperation with the Regional Resources Planning Group (Southeastern Colorado Water Conservancy District, Colorado Springs Utilities, Pueblo Water, Lower Arkansas Valley Water Conservancy District, Aurora Water, and Upper Arkansas Water Conservancy District) established a basinwide water-quality monitoring network in the...
Authors
Lisa D. Miller, Lauren E. Eng, Jackson B. Sharp
The digital archivist: Automating legacy macroseismic data processing using large language models The digital archivist: Automating legacy macroseismic data processing using large language models
Macroseismic data are a key resource to investigate shaking and damage from preinstrumental and early instrumental eras. However, data are often stored as inconsistently formatted reports describing observed shaking and damage, making manually parsing and interpreting accounts labor‐intensive. We introduce a novel workflow using Google’s Gemini 2.5 Pro large language model (LLM) to...
Authors
Aarnav Agrawal, Susan E. Hough, Mostafa Mousavi, Margaret Hellweg, William Ellsworth, Clara Yoon, Salvador Blanco