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Enhancements to the USGS Landsat Level 2 surface temperature and emissivity product for Collection 3 reprocessing Enhancements to the USGS Landsat Level 2 surface temperature and emissivity product for Collection 3 reprocessing
The Landsat program provides the longest continuous global record of thermal infrared observations of the Earth's surface, underpinning critical applications in climate monitoring, water resources, ecosystem dynamics, urban heat analysis, and natural hazard assessment. The release of a global inventory of Landsat Collection 2 Level 2 surface temperature products by the U.S. Geological...
Authors
Saeed Arab, Chase Mueller, Christopher J. Crawford, Danika Wellington, Ray Dittmeier, Glynn Hulley, Aaron Gerace, Calli Jenkerson, Simon Hook, Amirhossein Hassanzadeh, Rehman Eon, Cody Anderson, Pat Scaramuzza, Frank M. Göttsche
Decadal trends in the quality of groundwater used for public drinking-water supply in California, 2004–23, California Groundwater Ambient Monitoring and Assessment Program, Priority Basin Project Decadal trends in the quality of groundwater used for public drinking-water supply in California, 2004–23, California Groundwater Ambient Monitoring and Assessment Program, Priority Basin Project
This study provides a comprehensive assessment of decadal changes in the quality of groundwater used for public drinking-water supply at 444 monitoring sites across California during 2004–23. We assessed decadal step trends in groundwater quality for 145 water-quality constituents and geochemical indicators statewide and across geographic and land-use based network groups. We evaluated...
Authors
Zeno F. Levy, Andrew L. Soldavini
Global carbon investment in terrestrial biological nitrogen fixation Global carbon investment in terrestrial biological nitrogen fixation
Biological nitrogen (N) fixation (BNF) provides the N needed to produce proteins and other biological building blocks, helping feed humanity and mitigate climate change. Due to its high energetic cost compared to other forms of N acquisition, biotic investment in BNF indicates N limitation. Globally gridded BNF flux data provide an opportunity to determine the energetic investment in BNF...
Authors
Duncan N.L. Menge, Carla R. Reis Ely, Steven S. Perakis, Sian Kou-Giesbrecht, Cory C. Cleveland, Sasha C. Reed, Benton N. Taylor, Sarah A. Batterman, Timothy E. Crews, Katherine A. Dynarski, Jennifer L. Funk, Maga G. Gei, Kevin L. Griffin, Michael J. Gundale, David F. Herridge, Sarah E. Jovan, Mark B. Peoples, Johannes Piipponen, Emilio Rodriguez-Caballero, Verity G. Salmon, Fiona M. Soper, Anika P. Staccone, Bettina Weber, Amelia A. Wolf, Nina Wurzburger
Understanding natal emigration in group-living carnivores Understanding natal emigration in group-living carnivores
Dispersal is a critical ecological and evolutionary process, yet the drivers of individual variation in emigration, particularly under human-modified conditions, remain relatively understudied. We investigate the determinants and patterns of emigration in a managed population of cooperative breeders using genetic samples from harvested individuals.We used a novel genetic approach to...
Authors
Kathleen M. Petersen, Joel M. Tebbenkamp, Matthew A. Mumma, David Edward Ausband
Quantifying methane emissions from a rich fen with uncrewed aircraft systems in boreal Alaska Quantifying methane emissions from a rich fen with uncrewed aircraft systems in boreal Alaska
Thawing of permafrost in northern latitudes is accelerating, potentially releasing substantial amounts of methane (CH4) as forested permafrost plateaus transition into wetlands. This ecosystem shift alters the carbon exchange between the soil and atmosphere, influencing the permafrost-carbon feedback. Monitoring these changes may require measurement platforms operating across varied...
Authors
J.M. Tomlin, C.W. Edgar, E. Seroki, E.S. Euskirchen, E.S. Kane, M.Y. McPartland, L.T. Iraci, Kristen L. Manies
Assessment of undiscovered shale-oil and shale-gas resources in the Berkine, Illizi, Hamra, Murzuq, and Erdis Kufra Basins of northern Africa, 2026 Assessment of undiscovered shale-oil and shale-gas resources in the Berkine, Illizi, Hamra, Murzuq, and Erdis Kufra Basins of northern Africa, 2026
Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean resources of 2.4 billion barrels of shale oil and 65.4 trillion cubic feet of shale gas in the Berkine, Illizi, Hamra, Murzuq, and Erdis Kufra Basins of northern Africa.
Authors
Michael E. Brownfield, Christopher J. Schenk, Tracey J. Mercier, Kristen R. Marra, Cheryl A. Woodall, Thomas M. Finn, Phuong A. Le, Heidi M. Leathers-Miller, Ronald M. Drake II, Scott A. Kinney
Assessment of undiscovered tight-gas resources in the Berkine, Illizi, and Hamra Basins of northern Africa, 2026 Assessment of undiscovered tight-gas resources in the Berkine, Illizi, and Hamra Basins of northern Africa, 2026
Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean resources of 114.1 trillion cubic feet of tight gas in the Berkine, Illizi, and Hamra Basins of northern Africa.
Authors
Michael E. Brownfield, Christopher J. Schenk, Tracey J. Mercier, Thomas M. Finn, Cheryl A. Woodall, Phuong A. Le, Heidi M. Leathers-Miller, Kristen R. Marra, Ronald M. Drake, Scott A. Kinney
Developing a low-cost drone-based method for deploying and retrieving autonomous recording units in inaccessible areas Developing a low-cost drone-based method for deploying and retrieving autonomous recording units in inaccessible areas
Autonomous Recording Units (ARUs) are increasingly used in research to support passive acoustic monitoring, but deployment in remote or inaccessible locations remains logistically challenging. Traditional manual placement is labor-intensive, time-consuming, potentially hazardous, and often limited to habitat edges, creating sampling biases and restricting spatial coverage. To address...
Authors
Akshit R. Suthar, Jared A. Elmore, Erin K. Buchholtz, Travis H. Folk, Beau A. Bauer, Aaron R. Pierce, James T. Anderson
Deep subsurface organic-rich shale supports abundant, diverse, and novel fungi Deep subsurface organic-rich shale supports abundant, diverse, and novel fungi
As Earth’s principal reservoir of organic carbon and microbial biomass, the deep subsurface hosts microorganisms capable of mobilizing this once-sequestered carbon. Contrary to standard assumptions of eukaryotic scarcity, this study documents abundant fungal communities, ranging from 4.2 × 103 to 6.8 × 103 fungal cells mL−1, across a methane-producing organic-rich shale 247–556 meters...
Authors
Quinn S. Moon, Elliott P. Barnhart, Matthew S. Varonka, Elizabeth J. Tomaszewski, Michelle Orozco-Quime, Thomas Desrosiers, Ivan Paciorka, Michael Carley, James Schramski, Bradley S. Stevenson, Magdalena Osburn, Anurup Mohanity, Anna Martini, Jason E. Stajich, Jennifer McIntosh, Timothy Y. James
Lead exposure of snakes near recreational and military shooting areas in a sagebrush steppe ecosystem Lead exposure of snakes near recreational and military shooting areas in a sagebrush steppe ecosystem
Lead exposure has been documented in a multitude of bird and mammal species but less frequently in reptiles. Of the studies that have evaluated lead concentrations in reptiles, few have focused on snakes. We analyzed lead concentrations in liver and two types of bone from 24 gophersnakes (Pituophis catenifer; Pc) and 12 Great Basin rattlesnakes (Crotalus oreganus lutosus; Col) found dead...
Authors
Vincent A. Slabe, David S. Pilliod, Michelle I. Jeffries, Kristina Joan Parker, Megan Yrazabal, Christine D. Hayes, Patricia A. Ortiz, Todd E. Katzner
Integrating habitat suitability and climate constraints to predict nonnative fish invasion risk for U.S. streams and inland lakes Integrating habitat suitability and climate constraints to predict nonnative fish invasion risk for U.S. streams and inland lakes
Introduction: Nonnative fishes in streams and inland lakes can substantially alter aquatic ecosystems by degrading habitat conditions, competing with native species, and restructuring food webs. Identifying invasion hotspots can inform proactive management and prevention of nonnative species establishment. Methods: In this study, we identified streams and lakes across the conterminous...
Authors
Hao Yu, Arthur R. Cooper, Jared A. Ross, Wesley Daniel, Emily M. Dean, Dana M. Infante
Constraining the permeability and outer-rise hydration at the Central America margin Constraining the permeability and outer-rise hydration at the Central America margin
Subduction zones are important drivers of Earth's geochemical evolution; the presence of water within the subduction system has substantial implications for geohazards, including the style of seismicity and the volume of magma generated at arc volcanoes. We utilize estimates of pore fluid distributions in the outer-rise region of the Central American margin imaged using controlled-source...
Authors
Daniel Douglas, Brad T. Aagaard, John Naliboff, Samer Naif