Local, regional, and distal recordings of seismic unrest at Tau Island volcano, American Samoa
Aaron Wech, Matthew M. Haney, Jefferson Chang, A.D. Jolly, Clara Yoon, Robert J. Skoumal
2025, Bulletin of Volcanology (87)
A seismic swarm near Taʻū Island, a volcanic island in eastern American Samoa, occurred from July to October 2022. The earliest unrest was noted as felt shaking reports in late July, and instrumentation varied in the beginning of the sequence as the U.S. Geological Survey (USGS) Hawaiian Volcano Observatory responded...
A high-resolution 3-D P-wave velocity structure of the south-central Cascadia subduction zone from wide-angle shore-crossing seismic refraction data
Asif Ashraf, Emilie Hooft, Douglas Toomey, Anne Trehu, Sarah Nolan, Erin A. Wirth, Kevin M. Ward
2025, JGR Solid Earth (130)
This study addresses a significant gap in understanding the features of the south-central Cascadia subduction zone, a region characterized by complex geologic, tectonic, and seismic transitions both offshore and onshore. Unlike other segments along this margin, this area lacks a 3-D velocity model to delineate its structural and geological features...
Accounting for non-random samples with distance sampling to estimate population density
Duane R. Diefenbach, Jacob Trowbridge, Amanda N. Van Buskirk, Tess McConnell, Kevin Lamp, Tiago A. Marques, David Walters, Bret D. Wallingford, Christopher S. Rosenberry
2025, Journal of Applied Ecology (62) 986-994
A critical assumption of standard distance sampling is that sampling lines are located such that animals are uniformly distributed as a function of distance from the line. Failure to meet this assumption can introduce bias in the estimator.Many studies have used landscape features, such as roads or rivers, as...
How will we prepare for an uncertain future? The value of open data and code for unborn generations facing climate change
Dylan Gerald-Everett Gomes
2025, Proceedings of the Royal Society, B (292)
As the impacts of climate change continue to intensify, humans face new challenges to long-term survival. Humans will likely be battling these problems long after 2100, when many climate projections currently end. A more forward-thinking view on our science and its direction may help better prepare for the future of...
An unexplained tsunami: Was there megathrust slip during the 2020 Mw7.6 Sand Point, Alaska, earthquake?
Sean R. Santellanes, Dara Elyse Goldberg, Pablo Koch, Diego Melgar, William L. Yeck, Brendan W. Crowell, Jiun-Ting Lin
2025, Seismica (4) 1-13
On October 19, 2020, the Mw7.6 Sand Point earthquake struck south of the Shumagin Islands in Alaska. Moment tensors indicate the earthquake was primarily strike-slip, yet the event produced an enigmatic tsunami that was larger and more widespread than expected for an earthquake of that magnitude and mechanism. Using a...
Exploring the science and data foundation for Federal public lands decisions
Alison C. Foster, Andrew T. Canchola, Travis S. Haby, Sarah K. Carter
2025, PLoS ONE (20)
Public lands provide diverse resources, values, and services worldwide. Laws and policies typically require consideration of science in public lands decisions, and resource managers are committed to science-informed decision-making. However, it can be challenging for managers to use, and document the use of, science and data in their decisions. To...
The accuracy of capture per unit effort in predicting density of a cryptic snake was more sensitive to reductions in spatial than temporal coverage
Melia Gail Nafus, Emma B. Hanslowe, Scott Michael Goetz
2025, PLoS ONE (20)
A critical component of monitoring wildlife populations is understanding changes in population size or abundance. However, for most populations a complete census is not possible; thus, trends or abundance need to be estimated through alternative means, such as indexes. An important aspect of using indexes, such as capture per unit...
Long-term trends in microseismicity during operational shut-ins at the Coso Geothermal Field, California
Joanna Holmgren, J. Ole Kaven, Volker Oye
2025, The Seismic Record (5) 73-82
Pausing injection and production can lead to induced seismicity in a variety of settings, with some of the largest events occurring during these so-called shut-ins. In geothermal fields, shut-ins are periodically conducted for maintenance on wells and surface infrastructure, thereby offering recurring means of estimating stress changes in the subsurface...
Filling the gaps: A Bayesian mixture model for imputing missing soil water content data
Kiona Ogle, Emma Reich, Kimberly Samuels-Crow, Marcy Litvak, John B. Bradford, Daniel Rodolphe Schlaepfer, Megan Devan
2025, Ecohydrology (18)
Soil water content (SWC) data are central to evaluating how soil moisture varies over time and space and influences critical plant and ecosystem functions, especially in water-limited drylands. However, sensors that record SWC at high frequencies often malfunction, leading to incomplete timeseries and limiting our understanding of dryland ecosystem dynamics....
A real-time fish detection system for partially dewatered fish to support selective fish passage
Jonathan Gregory, Scott M. Miehls, Jesse Eickholt, Daniel Zielinski
2025, Sensors (25)
Recent advances in fish transportation technologies and deep machine learning-based fish classification have created an opportunity for real-time, autonomous fish sorting through a selective passage mechanism. This research presents a case study of a novel application that utilizes deep machine learning to detect partially dewatered fish exiting an Archimedes Screw...
Applications of unoccupied aerial systems (UAS) in landscape ecology: A review of recent research, challenges and emerging opportunities
Miguel L. Villarreal, Tara B.B. Bishop, Temuulen Ts. Sankey, William K. Smith, Matthew Alexander Burgess, Trevor Caughlin, Jeffrey K. Gillan, Caroline Havrilla, Tao Huang, Raymond LeBeau, Cindy L. Norton, Joel B. Sankey, Victoria Mary Scholl, Joshua W. Von Nonn, Erika Yao
2025, Landscape Ecology (40)
ContextUnoccupied aerial systems/vehicles (UAS/UAV, a.k.a. drones) have become an increasingly popular tool for ecological research. But much of the recent research is concerned with developing mapping and detection approaches, with few studies attempting to link UAS data to ecosystem processes and function. Landscape ecologists have long used high...
Using GPS tracking data to validate the conservation value of bird migration counts
Ron Efrat, Yael Lehnardt, Daniel Berkowic, Yossi Leshem, Roi Dor, Alexander E. Bragin, Evgeny Bragin, Todd E. Katzner, Nir Sapir
2025, Biological Conservation (302)
Effective conservation of migratory birds requires gathering of information about their population trends, often acquired using migratory bird counts. These schemes ideally operate at migratory bottlenecks, through which a significant portion of the counted migratory populations is funneled. Yet it is rare to validate the conservation value of the data...
Triangulating habitat suitability for the locally extirpated California grizzly bear
Michael C Mcinturff, Peter S. Alagona, Scott D. Cooper, Kaitlyn M. Gaynor, Sarah E. Anderson, Elizabeth S. Forbes, Robert Heilmayr, Elizabeth H.T. Hiroyasu, Bruce E. Kendall, Alexis M. Mychajliw, Molly Hardesty-Moore
2025, Biological Conservation (303)
Reintroducing locally extirpated wildlife species is often necessary to meet recovery goals. However, because current field data cannot be gathered about these species, efforts to identify suitable habitat are often complicated and controversial. Here we present a case study examining a novel approach for identifying suitable habitat for the locally...
ShakeAlert® version 3: Expected performance in large earthquakes
Jeffrey J. McGuire, Carl W. Ulberg, Angela I. Lux, Maren Bose, J.R. Andrews, Deborah Smith, B. Crowell, Jessica R. Murray, I. Henson, R. Hartog, C. Felizardo, Minh Huynh, M. Aranha, Grace Alexandra Parker, Annemarie S. Baltay Sundstrom, Mark Hunter Murray, Glenn Biasi, Stephen Guiwits, Jessie K. Saunders, Andrew D. Good, V. Marcelo Santillan, C.W. Scrivener, Walter M. Szeliga, Timothy I. Melbourne, Victor Kress, Robert M. de Groot, Sara K. McBride, Douglas D. Given, Richard Allen, Thomas H. Heaton, Allen L. Husker, Valerie Thomas, Harold Tobin, Sumant Jha, Julian Bunn
2025, Bulletin of the Seismological Society of America (115) 533-561
The ShakeAlert earthquake early warning (EEW) system partners along with U.S. Geological Survey (USGS) licensed operators deliver EEW alerts to the public and trigger automated systems when a significant earthquake is expected to impact California, Oregon, or Washington. ShakeAlert’s primary goal is to provide usable warning times before the arrival...
The 3D Elevation Program—Supporting Utah’s economy
Cynthia L. Ritmiller
2025, Fact Sheet 2025-3004
Introduction High-quality elevation data for Utah inform decision making to improve the State’s economy. Light detection and ranging (lidar) data are used to support infrastructure planning and management, assess natural resources, and improve resiliency to hazards. The expanding availability of current and more accurate lidar data helps to better support natural...
Continuous stream discharge, salinity, and associated data collected in the lower St. Johns River and its tributaries, Florida, 2022
Jennifer N. Carson, Matthew T. Benacquisto
2025, Open-File Report 2024-1076
The U.S. Army Corps of Engineers, Jacksonville District, deepened the St. Johns River channel in Jacksonville, Florida, to accommodate larger, fully loaded cargo vessels. The U.S. Geological Survey (USGS), in cooperation with the U.S. Army Corps of Engineers, monitored stage, discharge, and (or) water temperature and salinity at 26 continuous...
Streamflow, water quality, and constituent loads and yields, Scituate Reservoir drainage area, Rhode Island, water year 2022
Kirk Smith, Alana B. Spaetzel
2025, Data Report 1205
As part of a long-term cooperative program to monitor water quality within the Scituate Reservoir drainage area, the U.S. Geological Survey, in cooperation with Providence Water (formerly the Providence Water Supply Board), collected streamflow and water-quality data in tributaries to the Scituate Reservoir, Rhode Island. Streamflow and concentrations of chloride...
Water depth, position within the nesting colony, and nearest neighbor density affect nest survival in Aechmophorus occidentalis (Western Grebe)
Deo A. Lachman, Courtney J. Conway, Kerri T. Vierling, Ty Matthews
2025, Ornithological Applications (127)
Aechmophorus occidentalis (Western Grebe) are colonial nesting waterbirds that have experienced population declines. We located and monitored 709 grebe nests using a drone within Lake Cascade, the largest grebe breeding colony in Idaho. We conducted 6 flights between June 20, 2018 and July 11, 2018 and used the photographs from each...
Snapshots of mid-to-late Holocene sea-surface temperature variability from a subtropical western Atlantic coral reef
Jessica A. Jacobs, Julie N. Richey, Jennifer A. Flannery, Kaustubh Thiumalai, Lauren T. Toth
2025, Palaeogeography, Palaeoclimatology, Palaeoecology (663)
Large-scale Holocene climate reconstructions rely heavily on extratropical proxy records. Coral-based temperature reconstructions from the tropical and subtropical oceans therefore fill a critical spatial and temporal data gap, allowing for reconstruction of seasonally resolved temperature variability. We present five new, monthly-resolved sea-surface temperature (SST) reconstructions (between 39 and 57 years in...
Concentration-discharge relations and transient metal loads reveal spatiotemporal variability in solute-generation mechanisms in a mine-affected watershed
Connor P. Newman, Alexis Navarre-Sitchler, Robert L. Runkel, Rory M. Cowie
2025, Journal of Contaminant Hydrology (269)
Concentration-discharge (CQ) relations are commonly used to understand geochemical and hydrologic controls on the generation of solutes in watersheds. Despite the widespread application of CQ relations, this technique has been infrequently applied to acid mine drainage (AMD) sites, but the CQ framework may allow mechanistic understanding of remedial outcomes such...
Development of ‘SedCam’— A close-range remote sensing method of estimating suspended-sediment concentration in small rivers
Adam R. Mosbrucker, Molly S. Wood
2025, Geomorphology (476)
The adaptation of suspended-sediment surrogate technologies continues to rapidly expand across geomorphology and fluvial sediment monitoring efforts. Over a decade of research and development shows increased reliability and accuracy of in-situ surrogates with reduced program cost as compared to traditional sample-based methods, but environmental fouling and probe damage can be...
Lower trophic level monitoring implementation plan for Barataria Basin: Protocols and programmatic management
Erin P. Kiskaddon, Sibel Bargu, Melissa Millman Baustian, Melissa Carle, Jean Cowan, Jennifer Doerr, Cassandra N. Glaspie, Brittany Jensen, Bingqing Liu, Emelia Marshall, Michael J. Polito, David B. Reeves, Shaye Sable, Malinda Sutor, Ian Zink
2025, Report
Prior work completed by Kiskaddon et al. (2021, 2022b, 2022a) identified critical data gaps for Lower Trophic Level (LTL) organisms in Barataria Basin, Louisiana. A Monitoring and Adaptive Management (MAM) Activity Implementation Plan (MAIP) was subsequently developed to describe a MAM Activity that would address and fill these critical data...
Mammalian predator co‐occurrence affected by prey and habitat more than competitor presence at multiple time scales
Sarah B. Bassing, David Edward Ausband, Matthew A. Mumma, Sarah Thompson, Mark A. Hurley, Matthew Richard Falcy
2025, Ecological Monographs (95)
The behavior and abundance of sympatric predators can be affected by a complex dominance hierarchy. The strength of antagonistic interactions in predator communities is difficult to study and remains poorly understood for many predator assemblages. Predators directly and indirectly influence the broader ecosystem, so identifying the relative importance of competition,...
Artificial neural network multilayer perceptron models to classify California’s crops using Harmonized Landsat Sentinel (HLS) data
Richard L. McCormick, Prasad Thenkabail, Itiya Aneece, Pardhasaradhi Teluguntla, Adam Oliphant, Daniel Foley
2025, Photogrammetric Engineering and Remote Sensing (91) 91-100
Advances in remote sensing and machine learning are enhancing cropland classification, vital for global food and water security. We used multispectral Harmonized Landsat 8 Sentinel-2 (HLS) 30-m data in an artificial neural network (ANN) multi-layer perceptron (MLP) model to classify five crop classes (cotton, alfalfa, tree crops, grapes, and others)...
Reproductive parameters in invasive blue catfish (Ictalurus furcatus) from tributaries of the Chesapeake Bay in Maryland and Delaware, 2020–22
Heather L. Walsh, Christine L. Densmore, Amy M. Regish, Jessica L. Norstog, Johnny Moore, Branson Williams, Noah Bressman, Zachary Crum
2025, Open-File Report 2024-1074
Over the past few decades, Ictalurus furcatus (Valenciennes in Cuvier and Valenciennes, 1840; blue catfish) have become a formidable invasive species in tidal tributaries of the Chesapeake Bay in Maryland and Delaware. Knowledge of their reproductive behaviors can support managers in the determination of ideal timing and implementation of mitigation...
