Occurrence and surface availability of Siskiyou Mountains Salamanders (Plethodon stormi) and Scott Bar Salamanders (P. asupak) in northern California
Brian J. Halstead, Daniel Antonio Macias, Casey D. Moss, Patrick M. Kleeman, Jonathan P. Rose
2025, Herpetologica (81) 336-345
Estimating the distributions of cryptic species is essential for conservation, yet our understanding is hampered by animal behavior and imperfect detection. We developed and implemented a multiscale occupancy survey protocol to estimate the probability of occurrence, probability of being active on the surface, and detection probability of two range-restricted terrestrial...
Spatial distribution and relative biomass of bigheaded carps in Lake Balaton, Hungary estimated from an environmental DNA survey
Nora Boross, Ardo Laszlo, Duane C. Chapman, Gergely Boros, Zoltán Vitál, Viktor Tóth, Nathan Thompson, Katy E. Klymus, Catherine A. Richter
2025, PLoS ONE (20)
Silver carp (Hypophthalmichthys nobilis), bighead carp (H. molitrix) and their hybrids, collectively known as bigheaded carps, have been introduced to Lake Balaton, Hungary. The current stock sizes are difficult to assess. We investigated environmental DNA (eDNA) techniques targeted for bigheaded carps, assessed the spatial distribution of eDNA in Lake Balaton,...
Development of genomic markers for monitoring and research on plethodontid salamanders
Benjamin M. Fitzpatrick, Kara Suzanne Jones, Aaron W. Aunins, Michael S. Eackles, David C. Kazyak
2025, PLoS ONE (20)
Despite the importance of plethodontid salamanders and their vulnerability to ongoing environmental change, they are inherently difficult to monitor due to their cryptic nature. Recent advances in genomics have created new opportunities for monitoring of populations and their responses to environmental perturbations. In this study, we developed...
Global recreational consumption of non-native inland fish: Higher economic benefits, but lower nutritional value and climate resilience
Marco Milardi, Louisa E. Wood, Elizabeth A. Nyboer, Holly Susan Embke, Sui C. Phang, Abigail J. Lynch
2025, Science of the Total Environment (1005)
Inland recreational fisheries are globally significant leisure pursuits, with well-documented benefits to human health and well-being, but also one of the principal drivers of non-native fish introductions to enhance fishing opportunities, whether for sport or sustenance. In this study, we assess the relative reliance of global inland recreational fisheries on...
U.S. Geological Survey geomagnetic variometer data: Capitalizing on seismic infrastructure
Adam T. Ringler, Andrew Holcomb, E. Joshua Rigler, Spencer Wilbur, C. Balch, Corey Beutel, Brendan Ryan Geels, J. Guerra, A. Horton, Edward Kromer, Kristen A. Lewis, Jeffrey J. Love, Yolando Root, Claudia Kristina Rossavik, N. Shavers, John Spritzer, Tyler Storm, Alexandra Nicole Wernle, David C. Wilson
2025, Seismological Research Letters
The U.S. Geological Survey’s Geomagnetism Program is collaborating with the Earthquake Hazards Program and Global Seismographic Network Program to densify magnetic field observations. This collaboration focuses on the installation of magnetometers, or magnetic variometers, at existing seismic stations. Along with improving the density of space weather observations for hazard monitoring,...
Imaging hyporheic exchange by integrating deep learning and physics-informed inversion of time-lapse self-potential data
Huichao Yin, Scott Ikard, Dale F. Rucker, Scott C. Brooks, Zhenxue Dai, Kenneth C. Carroll
2025, Geophysical Research Letters (52)
Self-potential (SP) monitoring is increasingly used for subsurface flow characterization due to its sensitivity to hydrogeological and geochemical processes. However, SP inversion remains challenging due to its ill-posed nature, sparse data coverage, and strong transient noise. This study proposes a hybrid framework to image hyporheic exchange using a time-lapse SP...
Missing data in ecology: Syntheses, clarifications, and considerations
Michael Dumelle, Rob Trangucci, Amanda M. Nahlik, Anthony R Olsen, Kathryn Irvine, Karen A. Blocksom, Jay Ver Hoef, Claudio Fuentes
2025, Ecological Monographs (95)
In ecology and related sciences, missing data are common and occur in a variety of different contexts. When missing data are not handled properly, subsequent statistical estimates tend to be biased, inefficient, and lack proper confidence interval coverage. Missing data are often grouped into three categories: missing completely at random (MCAR),...
Assessment of coastal and fluvial morphodynamic changes using Structure-for-Motion: A case study of the Sfȃntu Gheorghe Mouth (Danube Delta, Romania)
Andrei Gabriel Dragos, Gabriel Iordache, Florin Dutu, Monica Palaseanu-Lovejoy, Florin Pitea, Irina Stanciu, Adrian Stanica
2025, Conference Paper, Proceedings of Inżynieria Mineralna WMCEES 2025
The ability to accurately map erosion, flooding, and habitat loss in coastal environments is crucial for formulating national strategies aimed at preventing and mitigating the impacts of natural disasters. A fundamental component of this process is the implementation of coastal morphodynamics monitoring through Structure-from-Motion (SfM) techniques, utilizing high-resolution 2D/3D data...
Too hot for comfort: Elevated temperatures influence gene expression and exceed thermal tolerance of bigmouth shiners, Ericymba dorsalis
Ella K. Humphrey, Jonathan J. Spurgeon, Lizabeth Bowen, Robert E. Wilson, Shannon C. Waters-Dynes, Braxton M. Newkirk, Sarah A. Sonsthagen
2025, Journal of Fish Biology
Environmental and associated ecosystem change may affect the persistence of fish species based on their ability to adapt to changing conditions, including decreasing flows and rising water temperatures. Exceeding the thermal tolerances of stream fish will likely result in a loss of ability to maintain metabolic processes. We evaluated the...
Refined chronology of late Quaternary eruptions at Harrat Khaybar, Saudi Arabia, with implications for magma dynamics and regional volcanic history
Abdullah Aohali, Shanaka L. de Silva, Alejandro Cisneros de Leon, Charles Lewis, Axel K. Schmitt, Martin Danišík, Mark E. Stelten, Sujoy Mukhopadhyay, Robert Duncan, Frank C. Ramos
2025, GSA Bulletin
Determining accurate and precise ages for Quaternary volcanic centers is essential for reconstructing volcanic field histories, understanding magmatic processes, and assessing potential hazards or risk. Harrat Khaybar, western Saudi Arabia, is one of the youngest and potentially most active volcanic fields on the Arabian plate, has been active since ca....
Same view through a different lens: Comparing population trends for North American birds using eBird and the Breeding Bird Survey
Orin J. Robinson, Alison J. Johnston, Wesley M. Hochachka, J. A. Hostetler, John R. Sauer, Tom Auer, Matthew E. Strimas-Mackey, Shawn Ligocki, Nicholas A. Faraco-Hadlock, Viviana Ruiz-Gutierrez, Amanda D. Rodewald, Daniel Fink
2025, Ornithological Applications
Confidently estimating population trends is of vital importance for a wide range of ecological, conservation, and management applications. North America has 2 major data sources for estimating population trends of breeding birds—the North American Breeding Bird Survey (BBS) and the global participatory science project eBird. Because the...
Gas bubble trauma progression and mortality in sculpin, threespine stickleback, and Northern pikeminnow
Kenneth F. Tiffan, Brad D. Liedtke
2025, Northwest Science (98) 174-189
We examined the progression of gas bubble trauma (GBT) and associated mortality in sculpin (Cottus spp.), threespine stickleback (Gasterosteus aculeatus), and Northern pikeminnow (Ptychocheilus oregonensis) exposed to three levels of total dissolved gas (TDG; 120, 125, and 130% saturation) in laboratory experiments. Sculpin were most sensitive to elevated TDG followed by...
Predicting secretive species distribution using Bayesian networks with and without expert elicitation: A case study incorporating double-blind peer review
Dustin E. Brewer, Elisabeth B. Webb, Anne E. Mini, S. Keith McKnight
2025, Ecological Solutions and Evidence (6)
1. Species that are secretive, imperilled and consequently data deficient often re-quire conservation action despite limited available information. In such scenarios, Bayesian networks (BNs) offer a versatile and intuitive approach for utilizing various information sources, including literature reviews, community science data sets and expert knowledge. Although it...
A high-resolution late Paleocene–early Eocene organic-walled dinoflagellate cyst zonation of the United States Atlantic Coastal Plain
Mei Nelissen, Appy Sluijs, Debra A. Willard, Henk Brinkhuis
2025, Journal of Micropalaeontology (44) 431-467
Over the past decades, many expanded sedimentary records from the US Atlantic Coastal Plain (ACP) have been studied in detail to assess causes and consequences of the Paleocene–Eocene Thermal Maximum (PETM; ∼ 56 Ma). In ACP sections, the PETM, which is globally marked by a distinct negative carbon isotope excursion (CIE) lasting <span...
Changes in phosphorus concentration and flux from 2011 to 2023 in major U.S. tributaries to the Laurentian Great Lakes
Dustin William Kincaid, Matthew W. Diebel, Erin E. Bertke, Donald B. Bonville, G. F. Koltun, Dale M. Robertson, Luke C. Loken
2025, Journal of Great Lakes Research (51)
Reducing phosphorus (P) flux to the Great Lakes is critical for improving water quality and controlling eutrophication. We used 13 water years (2011–2023) of U.S. Geological Survey data from 24 major U.S. tributaries (representing 47% of the U.S. Great Lakes watershed area) to evaluate temporal changes in orthophosphate (PO4-P) and...
Analysis of trends in terrestrial vegetation at Mediterranean Coast Network Parks: Channel Islands National Park
Leigh Ann Starcevich, Christopher Murray, Lena F.S. Lee, Cameron B. Williams, Kathryn McEachern
2025, Science Report NPS/SR-2025/358
The five islands comprising Channel Islands National Park (CHIS) experience natural gradients in temperature and moisture driven by ocean currents. Additionally, the islands were used as ranchlands and military land before becoming a national park, resulting in widespread erosion and vegetation change. As a result, CHIS spans gradients in climate...
Evaluating Laramide orogenesis via flexural basin response in the San Juan basin, New Mexico and Colorado
Kurt Rudolph, Ryan J Leary, Tyson Michael Smith, Kristine L. Zellman
2025, Conference Paper, New Mexico Geological Society 75th annual fall field conference guidebook
A challenge in interpreting the location, timing, and magnitude of ancient orogenic events is that ongoing uplift and erosion in the hinterlands often destroys much of the primary record of these events. However, basin-thickness patterns in the sedimentary record can provide complimentary evidence of uplift via flexural effects. Here, we...
Amphibian diversity of the western Colorado canyonlands including potential threats from nonnative bullfrogs and disease
Denita M Weeks, David Pilliod, Madeline (Nikki) Grant-Hoffman, Anjelica F Quintana Spencer, Daniel Neubaum, Paul Hampton, Michaela Ray Grossklaus, Matthew B Laramie, Erin L. Muths
2025, Western North American Naturalist (85) 515-535
Throughout the canyons of the Colorado and Uncompahgre Plateaus, water is a limited resource for wildlife, with patchy distribution and seasonal availability. Tributary creeks within these canyons drain into mainstem rivers, providing habitat and breeding sites for native amphibians. Yet, little is known about the diversity and distribution of amphibians...
Landsat-derived rainfed and irrigated-area product for conterminous United States for the year 2020 (LRIP30 CONUS 2020) using supervised and unsupervised machine learning on the cloud
Pardhasaradhi Teluguntla, Prasad Thenkabail, Adam Oliphant, Itiya Aneece, Trent Biggs, Murali Krishna Gumma, Daniel Foley, Richard L McCormick, Neelam Rohitha, Emerson Long, Jake Lawton
2025, Photogrammetric Engineering & Remote Sensing (91) 703-714
Accurate maps of irrigated and rainfed croplands are crucial for assessing global food and water security. Irrigated croplands yield two to four times more grain and biomass than rainfed croplands. To meet rising food demand, the proportion of cropland that is irrigated must be increased globally. Because agriculture uses 80%...
Effects of flow on pesticides in water and zooplankton in the northern Sacramento-San Joaquin Delta
James Orlando, Laura Twardochleb, David Bosworth, Michelle L. Hladik, Corey Sanders, Matt De Parsia, Brittany E. Davis
2025, San Francisco Estuary and Watershed Science (23)
Zooplankton are a key food source for juvenile fishes in estuaries worldwide, including California’s Sacramento–San Joaquin Delta (hereafter Delta); both zooplankton quality and quantity are critical to ecosystem health. Zooplankton may be affected by pesticides in water and the food web, and the Delta is known to contain complex pesticide...
Drone-based radiometric surveys provide high-resolution mine waste characterization
Chloe Danielle Gustafson, Anjana K. Shah, Matthew Alexander Burgess, Josip Adams, Virginia McLemore, Evan J. Owen
2025, The Leading Edge (44) 889-900
Airborne radiometric surveys use passive geophysical techniques to characterize geochemical variations at or near earth’s surface. These methods have been used for a variety of mapping applications, including mineral resource evaluation. However, detailed characterization of smaller geologic targets, including mine waste features, requires flying at lower altitudes and with tighter...
The Mammoth magnetic anomaly, Pinal County, Arizona
Callum Andrew Walter, Daniel S. Scheirer, Carl Joseph Beno, Jackson Stone Borchardt, Dylan Mark Connell
2025, The Leading Edge (44) 879-888
A high-resolution Earth Mapping Resources Initiative airborne geophysical survey was flown in the southwest North American porphyry copper province to improve bedrock geologic maps and to identify areas that have unrecognized critical mineral resource potential. During the review of the aeromagnetic data, a distinctly monopolar-shaped, negative magnetic anomaly was observed...
Measurement of in situ-produced cosmogenic nuclides in fine-grained quartz from shale
Xianmei Huang, Darryl E. Granger, William Elijah Odom, Brody Conner, Lan Luo
2025, Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms (569)
In situ-produced 10Be in quartz is widely used to constrain exposure ages and denudation rates, traditionally measured in sand-sized grains. Here we report a new method for isolating fine-grained quartz from shale and demonstrate its reliability for grain sizes down to single microns. Sequential dissolution tests and analyses of grain size...
Freshwater turtle assemblages and densities in agricultural ditches and aquaculture ponds of eastern Arkansas
Andrhea D. Massey, John D. Willson, Brett Alexander DeGregorio
2025, Chelonian Conservation and Biology (24) 247-259
The Mississippi Alluvial Plain (MAP) of Arkansas is a landscape where many wetlands have been altered for use as aquaculture ponds or agricultural ditches. Commercial harvest of freshwater turtles within the MAP is not restricted or limited, with reported harvest numbers for 2019 alone exceeding 4000 for...
Ultralong, supershear rupture of the 2025 Mw 7.7 Mandalay earthquake reveals unaccounted risk
Dara Elyse Goldberg, William L. Yeck, Catherine Elise Hanagan, James William Atterholt, Haiyang Liam Kehoe, Nadine G. Reitman, William D. Barnhart, David R. Shelly, Alexandra Elise Hatem, David Wald, Paul S. Earle
2025, Science (390) 458-462
The 28 March 2025 moment magnitude (Mw) 7.7 earthquake in Mandalay, Burma (Myanmar), ruptured 475 kilometers of the Sagaing Fault, which was more than twice the length predicted by magnitude scaling relationships. Kinematic slip models and observation of a Rayleigh Mach wave that passed through parts of Thailand confirmed that...
