High-precision U-Pb data and reference age for Emerald Lake apatite
Francisco Apen, Sean Patrick Gaynor, Blair Schoene
2025, Data in Brief (60)
New isotope dilution thermal ionization mass spectrometry U-Pb data for Emerald Lake apatite demonstrate its potential as a reference material for geochronology. A three-dimensional 238U/206Pb-207Pb/206Pb-204Pb/206Pb isochron produces a 95.2 ± 1.1 Ma date with an initial Pb isotopic composition of 206Pb/204Pb = 18.85 ± 0.19 and 207Pb/204Pb = 15.68 ± 0.10 (n =...
Simulating demography, monitoring, and management decisions to evaluate adaptive management strategies for endangered species
Stefano Canessa, Sarah J. Converse, Lynn Adams, Doug P. Armstrong, Troy Makan, Mhairi McCready, Kevin A. Parker, Elizabeth H. Parlato, Hannah A. Sipe, John J. Ewen
2025, Conservation Letters (18)
Adaptive management (AM) remains underused in conservation, partly because optimization-based approaches require real-world problems to be substantially simplified. We present an approach to AM based in management strategy evaluation, a method used largely in fisheries. Managers define objectives and nominate alternative adaptive strategies, whose future performance is simulated by integrating...
Low genetic differentiation across restored and natural populations shortly after a large-scale, post-fire seeding in the Great Basin
Lina Aoyama, Matthew Germino, Lauren M. Hallett, Matthew A. Streisfeld
2025, Restoration Ecology (33)
Genetic diversity is essential for species to adapt to environmental changes. In restoration efforts, such as those after large wildfires in the sagebrush steppe of the Great Basin, commercially produced native seeds are used to revegetate the burned areas. While native seed certification and procurement protocols assure that genetically appropriate...
U.S. Geological Survey global seabed mineral resources
U.S. Geological Survey
2025, Fact Sheet 2025-3017
The U.S. Geological Survey (USGS) provides science and data on seabed mineral resources and ecosystems, as well as on the potential hazards associated with extraction. The Nation relies on minerals for infrastructure, technology, manufacturing, and energy production. Critical minerals are essential to the economic and national security of the United...
Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) Version 4 product user guide
Ying Li Yuan, Cole Krehbiel
2025, Book
The Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) is a multispectral imager that was launched on board the National Aeronautics and Space Administration (NASA) Earth Observing System (EOS) Terra Platform on December 18, 1999, and has been observing and collecting Earth observations for over 25 years. ASTER covers a...
Spatiotemporal patterns in urban nutrient and suspended sediment loads and stream response to watershed management implementation
Aaron J. Porter
2025, Environmental Monitoring and Assessment (197)
In recent years, local governments have invested heavily in management practices to reduce nutrient and sediment loads. These practices provide localities with nutrient and sediment regulatory reduction credits; however, their effects on water quality are poorly understood at the watershed scale. Long-term watershed-scale monitoring is essential for assessing progress toward...
Management strategy evaluation to assess trade-offs associated with invasive Blue Catfish fisheries and predation impacts
Corbin David Hilling, Yan Jiao, Joseph Schmitt, Mary C. Fabrizio, Paul L. Angermeier, Donald J. Orth
2025, Marine and Coastal Fisheries: Dynamics, Management and Ecosystem Science (17)
ObjectiveMany species are intentionally introduced beyond their native range to provide benefits to humans (e.g., food, recreation, or biocontrol). However, introduced species can become invasive and can harm native species, prompting resource managers to explore options to simultaneously conserve native biota and enhance fishing opportunities. Management...
Lake Ontario August gillnet survey and Lake Trout assessment, 2024
Brian O’Malley, Scott P. Minihkeim, Olivia Margaret Mitchinson, Scott David Stahl, Brian Weidel, Michael Connerton, Jessica Goretzke, Lucus Sunderland, Emma Bloomfield, Collin Farrell, Dimitry Gorsky
2025, Report
Lake Ontario Lake Trout (Salvelinus namaycush) rehabilitation has been assessed with fishery independent surveys to evaluate program benchmarks and compare observations with management objectives since 1983. These surveys provide information on the abundance, strain composition, and performance of stocked Lake Trout, as well as information on levels of natural recruitment,...
Identifying strategies to manage boreal forests: Simulating moose and timber management scenarios at a landscape scale in the face of changing environmental conditions
Nathan R. De Jager, Wiebke Neumann, Miguel M. Girona, Joakim Hjältén, Anouschka R. Hof
2025, European Journal of Forest Research (144) 525-546
There are ongoing debates among different stakeholders about which forest and ungulate management strategies will sustain high levels of timber and animal harvest and maintain important ecosystem functions under climate change. Ungulate-forest interactions are complex, including periods where forest regeneration is sensitive to browsing pressure, making it difficult to predict...
Behavioral plasticity in detection height of an invasive, arboreal snake based on size, condition, and prey
Melia G. Nafus, Levi Gray, Page E. Klug, Gordon H. Rodda, Scott Michael Goetz
2025, Wildlife Research (52)
ContextAnimals may adjust their behavior in predictable ways to balance tradeoffs between resource acquisition and survival or fecundity. Microhabitat selection based on individual traits or environmental conditions is one measure of risk–reward tradeoffs by individuals.AimsWe used data from observational and manipulative studies to investigate whether an...
Effects of climate change on midwestern ecosystems: Temperate flooded and swamp forest
Hugh Ratcliffe, Katherine Charton, Marta P. Lyons, Olivia E. LeDee
2025, Report
No abstract available....
Innovative microphone transmitter reveals differences in acoustic structure between broadcast and whisper songs of Myadestes obscurus (ʻŌmaʻo)
Amanda K Navine, Kristina L. Paxton, Erin C. Netoskie, Eirlys Tysall, Eben H. Paxton, Patrick J. Hart
2025, Ornithology (142)
Low-amplitude “whisper songs” are a taxonomically broad phenomenon in birds that could play an important role in the suite of behaviors birds use to communicate. Due to its cryptic nature, there are inherent difficulties in capturing high-quality whisper song recordings without interrupting natural behaviors. Thus, the whisper song acoustic structure...
Fossil diatoms in Arctic marine surface sediments
Christof Pearce, Beth Elaine Caissie, Alice Carter-Champion, Audrey Limoges, Tiia Luostarinen, Gavin L. Simpson, Kaarina Weckstrom
2025, Newsletter
Diatoms are one of the main constituents of marine phytoplankton in the Arctic, and thanks to their siliceous skeletons, diatom fossils are relatively well preserved in sediments. Due to their species-specific sensitivity to different ocean conditions, their abundance and assemblages in sediments are routinely used by paleoceanographers to reconstruct the...
Strike-slip faulting and counterclockwise rotations along the southwest portion of the Lake Mead fault system, Boulder City–Hoover Dam Area, Nevada
L. Sue Beard, Zachary Anderson, Tracey J. Felger
2025, Conference Paper, Desert archeology and extensional tectonics: 2025 Desert Symposium field guide and proceedings
No abstract available....
Self‐sustaining populations are a conservation vision, not an operational objective
Stefano Canessa, Axel Moehrenschlager, John G. Ewen, Sarah J. Converse
2025, Conservation Science and Practice (7)
It is common for species conservation plans to identify the establishment or maintenance of a “self-sustaining population” as an objective. However, this statement vaguely conflates different formulations and interpretations of population viability, management costs, and cultural preferences for non-invasive population management. Hidden value judgments and assumptions about these components can...
Balancing monitoring and management in the adaptive management of an invasive species
Brielle K. Thompson, Julien Olden, Sarah J. Converse
2025, Ecology and Evolution (15)
Efficient allocation of managers' limited resources is necessary to effectively control invasive species, but determining how to allocate effort between monitoring and management over space and time remains a challenge. In an adaptive management context, monitoring data are key for gaining knowledge and iteratively improving management, but monitoring costs money....
Uncertainty reduction for subaerial landslide-tsunami hazards
Katherine R. Barnhart, David L. George, Andrew L. Collins, Lauren N. Schaefer, Dennis M. Staley
2025, Journal of Geophysical Research: Earth Surface (130)
Subaerial rock slopes may generate a tsunami by rapidly moving into the water. Large uncertainty in landslide characteristics propagates into large uncertainty in tsunami hazard, making hazard assessment more difficult for land and emergency managers. Once a potentially tsunamigenic landslide is identified, it may not be clear which landslide characteristics...
Evaluating the applicability of the generalized power-law rating curve model: With applications to paired discharge-stage data from Iceland, Sweden, and the United States
Rafael Daniel Vias, Birgir Hrafnkelsson, Timothy O. Hodson, Sölvi Rögnvaldsson, Axel Örn Jansson, Sigurdur M. Gardarsson
2025, Journal of Hydrology (651)
Hydrologic research and operations make extensive use of streamflow time series. In most applications, these time series are estimated from rating curves, which relate flow to some easy-to-measure surrogate, typically stage. The conventional stage-discharge rating takes the form of a segmented power law, with one segment for each hydrologic control...
Points of consensus on catch-and-release: Considerations for science, ethics, and fisheries management
Matthew P. Corsi, Steven J. Cooke, Andy J. Danylchuk, Meaghan Guckian, Joseph Kozfkay, Michael Quist
2025, Fisheries (50) 182-184
Catch-and-release (C&R), whether via regulations or voluntary actions, is typically employed with the intent of reducing fishing mortality while maintaining recreational angling opportunities (Isermann & Paukert, 2010), but there has been significant discourse about the relative importance of individual-level (see Cooke et al., 2025) vs. population-level (see Corsi et al.,...
Per- and polyfluoroalkyl substances (PFAS) mass flux and mass balance at an aqueous film-forming foam release site in semiarid eastern New Mexico, USA
Erin Louise Gray, Samuel Edwin Potteiger, Trevor Dylan Brannon, Stuart Bryan Norton, Jay Cho, Michael D. Annable
2025, Journal of Contaminant Hydrology (272)
Passive flux meters (PFMs) directly measure groundwater chemistry mass flux and Darcy flux, providing insight into contaminant source-zone architecture and transport properties. This study uses PFMs to characterize PFAS flux in groundwater at a semiarid site with a thick (greater than 90-m) unsaturated zone where groundwater has been contaminated with per-...
Monitoring lava lake fluctuations and crater refilling with continuous laser rangefinders
Edward F. Younger, William Tollett, Matthew R. Patrick
2025, Journal of Applied Volcanology (14)
The U.S. Geological Survey’s Hawaiian Volcano Observatory (HVO) has developed a new method to continuously monitor lava lake elevations. Since 2018, HVO has stationed a laser rangefinder on Kīlauea’s caldera rim. The instrument automatically measures lava lake elevation each second, with centimeter accuracy. A stream of elevation data flows to...
Patterns of water-extractable soil organic matter in the US Great Plains: Insights from the Haas Soil Archive
Jonathan J. Halvorson, Angela Hansen, Catherine E. Stewart, Mark A. Liebig
2025, Agrosystems, Geosciences & Environment (8)
Novel approaches that are fast and sensitive are needed to evaluate soil change and integrate soil ecosystem properties. Carbon (C) and nitrogen (N) extracted from soil with water are associated with plant nutrients and microbial activity but information about change over time in the US Great Plains is sparse. We...
Aggregated space use by soft-released translocated Gopher Tortoises (Gopherus polyphemus)
Max D. Jones, Kevin J. Loope, Vivian H. Porter, Danielle K. Walkup, Wade A. Ryberg, Jeremy R. Preston, Justin T. Johnson, Bruce W. Hagedorn, Robert Bilbow, Billy M. Moore, Brandon C. Bowers, Roel R. Lopez, Elizabeth Ann Hunter
2025, Herpetologica (81) 141-151
Translocated herpetofauna can exhibit irregular space use and movement patterns when compared with resident conspecifics. In Florida, USA, Gopher Tortoises (Gopherus polyphemus) are translocated throughout the state to mitigate habitat loss due to development. The postrelease space use of translocated Gopher Tortoises within soft-release pens can affect population dynamics and...
Complex staged emplacement of a basaltic lava: The example of the July 1974 flow of Kīlauea
Sebastian Biass, Bruce F. Houghton, Edward W. Llewellin, Kristine C Curran, Thorvaldur Thordarson, Tim R. Orr, Carolyn Parcheta, Peter J. Mouginis-Mark
2025, Bulletin of Volcanology (87)
Basaltic lava flows can be highly destructive. Forecasting the future path and/or behavior of an active lava flow is challenging because topography is often poorly constrained and lava has a complex rheology and emplacement history. Preserved lavas are an important source of information which, combined with observations of active flows,...
The effects of breeding status on common raven movement, home range, and habitat selection
Julia C. Brockman, Peter S. Coates, John C. Tull, Pat J. Jackson, Shawn T. O’Neil, Perry J. Williams
2025, Journal of Wildlife Management (89)
Anthropogenic infrastructure has contributed to increasing common raven (Corvus corax) abundance across the Great Basin region of the United States, particularly in sagebrush ecosystems, where high raven densities are correlated with reduced sage-grouse (Centrocercus urophasianus) nest survival. Our understanding of how raven reproductive behavior affects sage-grouse nest predation is limited,...
