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Evidence of ringtail expansion into Idaho, USA Evidence of ringtail expansion into Idaho, USA
Ringtails (Bassariscus astutus) are widely distributed in the western United States and across much of Mexico, yet due to their relatively low densities and cryptic nature, little is known about their basic ecology even where they are common. Recent public sightings suggest ringtails may have expanded their distribution north into southern Idaho, USA. Currently, ringtails remain...
Authors
Peter F. Rebholz, Robert Charles Lonsinger, David Edward Ausband
Characterizing the long-term (1981–2023) temperature and precipitation dynamics in the Trans-Mountain regions of Kazakhstan, Central Asia Characterizing the long-term (1981–2023) temperature and precipitation dynamics in the Trans-Mountain regions of Kazakhstan, Central Asia
Mountain regions are highly climate-sensitive, yet long-term observational evidence of elevation and seasonal climate dynamics in Central Asia remains limited. This study examines spatiotemporal trends in temperature (Tmean, Tmax, Tmin, and diurnal temperature range [DTR]) and precipitation across Kazakhstan’s transmountain regions using 74 meteorological stations (1981–2023). Data were...
Authors
Baktybek Duisebek, Gabriel B. Senay, Talgat Usmanov, Kudaibergen Kyrgyzbay, Janay Sagin, Yerbolat Mukanov, Kanat Samarkhanov, Xuejia Wang, Sulitan Danierhan, Xiaohui Pan
Nonstationary demographic state-space models using unreplicated counts for species undergoing environmental stressors Nonstationary demographic state-space models using unreplicated counts for species undergoing environmental stressors
A fundamental task in ecological statistics is to estimate abundance and growth rate distributions from wildlife monitoring data to inform conservation management. Modeling time series of wildlife populations presents a number of challenges from both statistical and ecological perspectives, including discreteness; lack of replication; nonstationarity; and observation, demographic, and...
Authors
Ashton M. Wiens, Teresa Frances Bohner, Bradley James Udell, Wayne E. Thogmartin
Efficiency of down-looking cameras for detecting round goby (Neogobius melanostomus) over varying substrates in laboratory microcosms Efficiency of down-looking cameras for detecting round goby (Neogobius melanostomus) over varying substrates in laboratory microcosms
Since invading the Laurentian Great Lakes in the late 1980s, round goby Neogobius melanostomus have become a dominant benthic prey species, resulting in a need to accurately monitor their population abundance to inform fisheries management. Camera-based methods for assessing round goby abundances have gained popularity, but their efficiencies for detecting round goby are poorly...
Authors
Nicholas Yeager, Travis O. Brenden, Peter C. Esselman, Kailee A. Schulz, Alden T. Tilley
Stacked machine learning for timber identification with laser-induced breakdown spectroscopy (LIBS) Stacked machine learning for timber identification with laser-induced breakdown spectroscopy (LIBS)
This study presents a new approach to wood species identification using laser-induced breakdown spectroscopy (LIBS) combined with stacked machine learning techniques. The research analyzed 700 samples comprising nine Dalbergia species and nine additional tropical timber species, utilizing a handheld LIBS analyzer. A stacking methodology was developed by integrating three support vector...
Authors
Helder V. Carneiro, Erin R. Price, Kierra R. Cano, Caelin P. Celani, James A. Jordan, Kent M. Elliott, Karl S. Booksh
2025 USGS National Seismic Hazard Model for Puerto Rico and the U.S. Virgin Islands: Overview of model and hazard results 2025 USGS National Seismic Hazard Model for Puerto Rico and the U.S. Virgin Islands: Overview of model and hazard results
The U.S. Geological Survey recently updated the National Seismic Hazard Model (NSHM) for Puerto Rico and the U.S. Virgin Islands (PRVI). The first version of the PRVI NSHM was released in 2003, and therefore this 2025 update includes over 20 years of new geologic, geophysical, and engineering data, methods, and models. Updates follow similar efforts performed in the recent 2023 50-state...
Authors
Allison M. Shumway, Kevin Ross Milner, Peter M. Powers, Morgan P. Moschetti, Jason M. Altekruse, Julie A. Herrick, Andrea L. Llenos, Kyle B. Withers, Edward H. Field, Brad T. Aagaard, Richard W. Briggs, Alexandra Elise Hatem, Kirstie Lafon Haynie, Andrew J. Michael, Jessica A. Thompson Jobe, Kishor S. Jaiswal, Brandon S. Clayton, Nico Luco, Mark D. Petersen, Sanaz Rezaeian, Thomas L. Pratt, Yuehua Zeng
Tissue metal concentrations and toxicity in wild turkeys following chronic exposure to mining-contaminated soils in southeast Missouri, USA Tissue metal concentrations and toxicity in wild turkeys following chronic exposure to mining-contaminated soils in southeast Missouri, USA
The Big River watershed in southeast Missouri (SEMO) is a Superfund site with an extensive history of lead (Pb) and zinc (Zn) mining; cadmium (Cd) and other metals also occur in the ore and waste materials. We examined whether SEMO wild turkeys (Meleagris gallopavo) exposed to mining-contaminated floodplain soils and food resources in the Big River watershed had elevated metal...
Authors
Katrina K. Knott, Danielle M. Cleveland, Jason L. Isabelle, Nicole M. Nemeth, Emma Coleman, Michelle Seers, Nicholas Sievert, Emily Sinnott, Jeff Wenzel, Paul Blanchard, Timothy Lyons
Computational electromagnetic geophysics for groundwater system studies: A review on established practices and recent advances Computational electromagnetic geophysics for groundwater system studies: A review on established practices and recent advances
Identifying effective solutions for locating groundwater resources and ensuring the quality of drinking water is increasingly urgent, given the challenges posed by climate change and population growth. This review investigates electromagnetic geophysical imaging techniques, in both time- and frequency-domain, that can provide valuable insights for groundwater assessment. We explore...
Authors
Paula Rulff, Octavio Castillo-Reyes, Wouter Deleersnyder, Maria C. Mascarell, Burke J. Minsley, Jude King
Rethinking seed selection based on climate matching during restoration: Geography, soils and climate explain species-specific mortality Rethinking seed selection based on climate matching during restoration: Geography, soils and climate explain species-specific mortality
Implicit in the construction of seed transfer zones (STZs) are the assumptions that plant populations are adapted to their home climates and that transferring native seed across climate gradients risks maladaptation and poor performance. However, plants are adapted to multiple aspects of their environments that are often excluded from STZ development. Here, we used models integrating...
Authors
Carla Maria Roybal, Ella M. Samuel, Rachel M. Mitchell, Daniel E. Winkler, Robert Massatti
Keeping pace: Migrating sea lampreys adjust swim speed in response to shifting water velocity to maintain a constant ground speed Keeping pace: Migrating sea lampreys adjust swim speed in response to shifting water velocity to maintain a constant ground speed
Upstream migrating fish must balance energetic costs with environmental and ecological constraints. Theoretical models predict that fish can conserve energy by adjusting swim speed in response to changing water velocity, but detailed field tests of these predictions remain rare. We used fine-scale acoustic telemetry and hydrodynamic modeling to track adult sea lamprey (Petromyzon marinus...
Authors
Kandace R. Griffin, Christopher M. Holbrook, Daniel P. Zielinski, Theodore Castro-Santos, Christopher L. Cahill, C. Michael Wagner
GT-Seq panel development for species identification and parentage analysis of closely related hybridising Scaphirhynchus sturgeons GT-Seq panel development for species identification and parentage analysis of closely related hybridising Scaphirhynchus sturgeons
Hatchery supplementation is vital for conserving dwindling fish populations. Effective augmentation requires distinguishing hatchery-origin from wild individuals and accurately identifying species, particularly in systems where closely related species coexist. Genetic monitoring is key to quantifying genetic differences, but conventional markers do not distinguish hybrids, especially...
Authors
Junman Huang, Richard Flamio Jr., Nathan R. Campbell, Aaron J. DeLonay, Amy C. Buhman, Edward J. Heist