Microtextural characteristics of adularia in banded quartz veins from the Midas low-sulfidation epithermal deposit, Nevada
Lauren R. Terry, Thomas Monecke, T. James Reynolds, Filip Kasprowicz, Katharina I. Pfaff
2026, Mineralium Deposita
High-grade ores at the Miocene Midas low-sulfidation epithermal deposit in northern Nevada are confined to crustiform quartz veins containing abundant adularia. Micro-X-ray fluorescence elemental mapping reveals that adularia is a common gangue mineral occurring in colloform bands, bands showing bladed textures, and bands with dendritic terminations. The...
Bedrock geologic map of the Eagle Lake quadrangle, Essex County, New York
Gregory J. Walsh, Sean P. Regan, Phillip S. Geer, Arthur J. Merschat, Kaitlyn A. Suarez, Ryan J. McAleer, Matt S. Walton, Jr., E. Allen Crider, Jr.
2026, Scientific Investigations Map 3542
The bedrock geology of the 7.5-minute Eagle Lake quadrangle, Essex County, New York, consists of deformed and metamorphosed Mesoproterozoic gneisses of the Adirondack Highlands unconformably overlain by weakly deformed lower Paleozoic sedimentary rocks of the Champlain Valley. The Mesoproterozoic rocks occur on the eastern edge of the Adirondack Highlands and...
An energetic tradeoff best explains parturition timing in grizzly bears
C. M. Costello, L. L. Roberts, D. D. Bjornlie, M. D. Cameron, J. G. Clapp, Mark Haroldson, G. V. Hilderbrand, K. Joly, W. Kasworm, J. M. Nicholson, T. Radandt, M. S. Sorum, J. E. Teisberg, Frank T. van Manen, M. A. Vinks
2026, Ecology and Evolution (16)
Timing of grizzly bear (Ursus arctos) parturition during hibernation has been explained by ancestral traits (delayed implantation, altricial young, obligate maternal denning), but the ultimate driver underlying precise timing has not been fully explored. Capitalizing on an observed latitudinal increase in denning duration among four populations in interior North America,...
Distribution, abundance, breeding activities, and habitat use of the Least Bell's Vireo at Marine Corps Base Camp Pendleton, California—2020–24 summary report
Suellen Lynn, Alexandra Houston, Barbara E. Kus, Shannon M. Mendia
2026, Open-File Report 2025-1057
Executive Summary The purpose of this report is to provide the Marine Corps with a summary of abundance, breeding activity, demography, and habitat use of endangered Least Bell’s Vireos (Vireo bellii pusillus) at Marine Corps Base Camp Pendleton, California (MCBCP or Base). The report presents results of vireo surveys and monitoring...
Comparison of two precipitation gage networks in Cook County, Illinois
Kevin K. Johnson
2026, Scientific Investigations Report 2025-5102
The Cook County Precipitation Network is a set of 25 precipitation gages established within Cook County, Illinois, on approximately a 5- to 7-mile square grid and used by the U.S. Army Corps of Engineers to help account for diversions of water from Lake Michigan to the State of Illinois. The...
Revisiting the geochronology of late Quaternary marine terraces and uplift rates in coastal Santa Barbara County, California, USA
Daniel R. Muhs, R. Randall Schumann, Jordon Bright, Helen M. Roberts, Lindsey T. Groves
2026, Geomorphology (501)
In several early studies, central California marine terraces between Santa Barbara and Point Conception were interpreted to record sea-level high stands of the last interglacial complex, ∼80 ka to ∼120 ka (marine isotope stage [MIS] 5). These ages and their elevations (∼20 m to ∼45 m) indicate modest rates of tectonic...
Widespread terrestrial ecosystem disruption at the onset of the Paleocene–Eocene Thermal Maximum
Mei Nelissen, Debra A. Willard, Han Konijnenburg-van Cittert, Gabriel J. Bowen, Teuntje Hollaar, Appy Sluijs, Joost Frieling, Henk Brinkhuis
2026, Proceedings of the National Academy of Sciences (123)
The Paleocene–Eocene Thermal Maximum (PETM, ~56 Mya) interval was marked by massive 13C-depleted carbon emissions into the ocean/atmosphere system, manifested as a negative carbon isotope excursion (CIE) in sedimentary components, and ~5 °C global average warming. Episodes of hydrological perturbations and soil-erosion have been widely documented for the PETM but their...
Toxicity of anticoagulant rodenticides on Pacific salmon: Assessing lethal and sublethal effects
Lillian M. Pavord, Melissa K. Driessnack, Aaron B. Shiels, Steven Volker, Barnett A. Rattner, Jenifer McIntyre
2026, Ecotoxciology and Environmental Safety (310)
To restore native biodiversity on island ecosystems containing invasive rodents, partial- and whole-island eradications generally rely on broadcast baiting with anticoagulant rodenticides (ARs). This approach can result in bait pellets entering aquatic environments, raising concerns about effects to non-target fish. Salmonids are a dominant group of fishes on many temperate...
Harmonization of aggregated freshwater biotic data to support continental and global assessment
Jennifer Lento, Sarah M. Laske, Joseph M. Culp, Willem Goedkoop, Maria Kahlert, Danny C.P. Lau, Isabelle Lavoie, Jordan Musetta-Lambert, Jón S. Ólafsson, Kirsten S. Christoffersen
2026, PLOS Water (5)
Biodiversity loss and conservation are increasingly coming into focus in global policy fora, requiring information and assessments at wider spatial and temporal scales than previously considered. However, the monitoring framework required to support such data collection and assessment is lacking in many countries and is not harmonized...
Recent range expansion and documentation of a reproductive population of northern snakehead Channa argus (Cantor, 1842) in the Saint Francis River Drainage, Missouri
Edward M. Sterling, Taylor A. Bookout, Erin Holmes, Neil Baalman, Cody Henderson, Patrick Kroboth
2026, Records of Biological Invasions (15) 183-194
Northern snakehead Channa argus (Cantor, 1842) is an aquatic invasive fish species in the United States with first documented occurrence in the wild in the 2000s. Management efforts to control their populations in the eastern United States are ongoing. In the Mississippi River basin, limited resources have been allocated to...
Luminescence dating of hydrothermal explosions in the Yellowstone Plateau volcanic field
Karissa Cordero, Nathan Brown, Lauren N. Harrison, Shaul Hurwitz
2026, Quaternary Research
Hydrothermal explosions are a significant geological hazard in some active volcanic systems; however, the timing and triggering mechanisms of these explosions are poorly constrained. This study applies luminescence dating techniques to hydrothermal explosion deposits in the Yellowstone Plateau volcanic field to constrain explosion chronologies and evaluate potential triggering mechanisms. We...
The surface is not superficial: Utilizing hyper-local thermal photogrammetry for pedestrian thermal comfort inquiry
Logan Steinharter, Peter Christian Ibsen, Priyanka deSouza, Melissa R. McHale
2026, Remote Sensing (18)
The scale and magnitude of urban heating are often assessed using Satellite-Derived Land Surface Temperature (SD-LST). Yet, discrepancies in spatial resolution limit SD-LST’s ability to reflect pedestrian thermal experience, potentially leading to ineffective mitigation strategies. Hyper-local measurements of urban heat, defined as surface temperatures (TS) at the...
Early Pliocene (Zanclean) sea surface temperature for PlioMIP3
Harry J. Dowsett, Kevin M. Foley
2026, Global and Planetary Change (259)
Paleoclimate researchers have been comparing Pliocene environmental data to paleoclimate model results since the 1980s. The Pliocene Model Intercomparison Project (PlioMIP) began in 2008 with a focus on the Late Pliocene. Here we assess the availability and utility of sea surface temperature (SST) data for verification of...
Compounding of 100-year coastal floods by rainfall in an urban environment
Shima Kasaei, Phillip M. Orton, Thomas Wahli, David K. Ralston, John C. Warner
2026, Environmental Research Letters (21)
Coastal and pluvial flooding are both becoming more prevalent and severe due to climate change and urbanization in floodplains. The co-occurrence of these flood drivers is generally assumed to exacerbate the resulting flood impacts, a result referred to as compound flooding. However, few observational or modeling studies have investigated the...
Coral reef protection may help avert risks to people, property, and economic activity caused by projected reef degradation
Curt D. Storlazzi, Borja Reguero, Kimberly Yates, Kristen Alkins, James B. Shope, Camila Gaido-Lasserre, Theresa Fregoso, Michael W. Beck
2026, Earth's Future (14)
Degradation of coral reefs over the past several decades has caused regional-scale erosion of the shallow seafloor that serves as a protective barrier against coastal hazards along southeast Florida, USA. How future change in coral reefs may affect coastal flooding, however, has been less attended than other factors contributing to...
Conducting feasibility assessments of potential conservation reintroductions: A case study with the imperiled foothill yellow-legged frog, Rana boylii
Daniel Antonio Macias, Patrick M. Kleeman, Michelle L. Hladik, Kelly Smalling, Paul G. Johnson, Daniel A. Grear, Jonathan P. Rose, Brian J. Halstead
2026, Natural Areas Journal (46) 31-43
Conservation translocations are an increasingly common and often necessary component of recovering species that have become extirpated from portions of their range. Understanding and ameliorating potential threats that reduce the likelihood of successful population establishment at recipient sites is a key component of successful translocation planning. We examined multiple potential...
Hydrologic dynamics of ephemerally flooded playas in a dryland environment
Charles R. Kimsal, Enrique R. Vivoni, Osvaldo E. Sala, H. Curtis Monger, Owen P. McKenna
2026, Water Resources Research (62)
Ephemerally flooded playas are common in the southwestern United States and globally in drylands. Often formed in closed basins, playas are depressions which inundate infrequently from local precipitation and streamflow produced near the playa or from upland areas. Few studies have quantified the hydrologic connectivity between upland catchments and playas...
Monitoring recreation on federally managed lands and waters—Aspects of visitor use
Emily J. Wilkins, Dieta Hanson, Whitney Boone, Spencer A. Wood, Christian S.L. Crowley, Rudy Schuster
2026, Preprint
Federally managed public lands and waters receive about 1 billion recreational visits each year. Data on these visitors can aid in guiding policy decisions, managing resources effectively, and communicating the economic contributions of lands and waters. This report explores the methods used by agencies to collect data on aspects of...
Gerrard strain Rainbow Trout are not piscivorous in a shallow, polymictic reservoir
Kaitlyn M. Furey, Christopher S. Guy, Bradley W. Liermann, Patrick Saffel, David A. Schmetterling
2026, North American Journal of Fisheries Management (46) 247-258
ObjectiveGeorgetown Lake (Montana, USA) is renowned for its multispecies salmonid fishery. Although many anglers target kokanee Oncorhynchus nerka in Georgetown Lake, the body length of kokanee has typically been considered unsatisfactory. To reduce the density of kokanee and increase the average size, Montana Fish, Wildlife & Parks began stocking the piscivorous Gerrard...
An integrated mudstone facies classification scheme and revised interpretation of the sedimentologic processes driving carbon burial in the Cenomanian–Turonian Greenhorn Formation, Colorado, U.S.A.
Jason A. Flaum, Katherine L. French, Justin E. Birdwell, Kira K. Timm
2026, Journal of Sedimentary Research (96) 1-23
Standardizing facies descriptions has proven key to integrating interpretations of depositional processes and environments from sedimentologic observations with geochemistry data for mudstone lithologies. Because of their fine-grained nature, high degree of compaction, and heterogeneous composition, standardizing methods for mudstone descriptions has proven difficult, but it is critical...
Quantifying post-fire live tree presence and spatial variation using Sentinel-2 time series
Saba J. Saberi, Phillip J. van Mantgem, Micah C. Wright, Christopher Y.S. Wong, Andrew M. Latimer, Derek J.N. Young
2026, Forest Ecology and Management (605)
Accurate mapping of post-fire surviving trees is important for tracking forest recovery and prioritizing land management decisions. Satellite-based remote sensing is an effective method to assess post-fire forest conditions. Traditionally, differenced satellite-derived burn severity indices are computed by differencing one year pre- and post-fire spectral reflectance values. Differenced...
Groundwater tracing used to delineate recharge areas and map karst groundwater pathways for subterranean streams at Oregon Caves National Monument and Preserve
Benjamin V. Miller
2026, Scientific Investigations Report 2025-5084
Oregon Caves National Monument and Preserve in southwestern Oregon is a 4,554-acre area managed by the National Park Service that is home to several cave systems, including Oregon Caves, which is the longest cave in Oregon, with 3.03 miles of mapped passages. Because of the interconnected nature of karst hydrologic...
A review and synthesis of post-wildfire shifts in hydrologic processes and streamflow generation mechanisms
Brian A. Ebel, John C. Hammond, Michelle A. Walvoord, Trevor Fuess Partridge, David M. Rey, Sheila F. Murphy
2026, Environmental Research: Water (1)
Critical water supply watersheds in the western United States (WUS) are impacted by wildfires, with potential negative effects on water quality and quantity. Scientific understanding is currently insufficient to deliver estimates of wildfire consequences for water quantity that are regionally accurate. Regional variability in the directionality and...
Computation of regional groundwater budgets for the Virginia Coastal Plain aquifer system
Jason P. Pope, Alison D. Gordon, Ryan S. Frederiks
2026, Preprint
Computation of detailed groundwater flow budgets for subdivisions of Virginia’s Coastal Plain aquifer system has enabled quantification and more thorough understanding of groundwater flow within this important water resource. A zone budget analysis conducted on previously published groundwater models of the Virginia Coastal Plain and Virginia Eastern Shore shows that...
Low-frequency earthquakes track the motion of a captured slab fragment
David R. Shelly, Amanda M. Thomas, Kathryn Z. Materna, Robert J. Skoumal
2026, Science (391) 294-299
Accurate tectonic models are essential for assessing seismic hazard and fault interactions. However, the plate configuration at the complex Mendocino triple junction, where the San Andreas Fault and the Cascadia subduction zone meet, remains uncertain. We analyzed fault slip associated with a recently identified zone of tectonic tremor and low-frequency...
