Adaptable plasmonic membrane sensors for fast and reliable detection of trace low micrometer microplastics in lake water
Ziyan Wu, Sarah E. Janssen, Michael T. Tate, Hoaran Wei, Mohan Qin
2024, Environmental Science and Technology (58) 20172-20180
In freshwater environments, low-micrometer microplastics (LMMPs) have captured significant attention due to their prevalence and toxicity. Yet, rapid detection of LMMPs (1–10 μm) at the single-particle level within complex freshwater matrices remains a hurdle. We developed an adaptable plasmonic membrane sensor for fast detection of individual LMMPs in eutrophic lake...
Dynamics, monitoring and forecasting of tephra in the atmosphere
Federica Pardini, Sara Barsotti, Contanza Bonadonna, Mattia de’ Michieli Vitturi, Arnau Folch, Larry G. Mastin, Soledad Osores, Andrew T. Prata
2024, Reviews of Geophysics (62)
Explosive volcanic eruptions inject hot mixtures of solid particles (tephra) and gasses into the atmosphere. Entraining ambient air, these mixtures can form plumes rising tens of kilometers until they spread laterally, forming umbrella clouds. While the largest clasts tend to settle in proximity to the volcano, the smallest fragments, commonly...
Evaluating the impact of uncertainty in ground motion forecasts for post-earthquake impact modeling applications
Davis T. Engler, Kishor S. Jaiswal, Mahadevan Ganesh
2024, Earthquake Spectra Journal (41) 524-546
The US Geological Survey’s (USGS) ShakeMap system provides a rapid characterization of strong ground shaking in areas directly affected by an earthquake. This study focuses on studying the aggregate effects of macroseismic shaking estimates from ShakeMap, expressed in terms of modified Mercalli intensity (MMI), when accounting for the uncertainty in...
Population structure of Desmophyllum pertusum found along the United States eastern continental margin
Alexis Marie Weinnig, Aaron Aunins, Veronica J. Salamone, Andrea M. Quattrini, Martha S. Nizinski, Cheryl Morrison
2024, BMC Research Notes (17)
ObjectiveThe connectivity and genetic structuring of populations throughout a region influence a species’ resilience and probability of recovery from anthropogenic impacts. By gaining a comprehensive understanding of population connectivity, more effective management can be prioritized. To assess the connectivity and population genetic structure of a common cold-water coral...
The influence of grazing on the spatiotemporal activity patterns of a primary sage-grouse nest predator
Nolan A. Helmstetter, Courtney J. Conway, Shane Roberts, Paul D. Makela, Lisette P. Waits
2024, Rangeland Ecology and Management (98) 316-323
Perturbations in ecological processes can occur when wildlife alter their spatiotemporal activity patterns to avoid human activities that they perceive as a risk. Such perturbations can have cascading effects throughout wildlife communities. For greater sage-grouse (Centrocercus urophasianus; hereafter sage-grouse), nest predation plays an important role in population dynamics. Domestic cattle...
The projected exposure and response of a natural barrier island system to climate-driven coastal hazards
Jennifer Anne Thomas, Patrick L. Barnard, Sean Vitousek, Li H. Erikson, Kai Alexander Parker, Kees Nederhoff, Kevin M. Befus, Manoochehr Shirzaei
2024, Scientific Reports (14)
Accelerating sea level rise (SLR) and changing storm patterns will increasingly expose barrier islands to coastal hazards, including flooding, erosion, and rising groundwater tables. We assess the exposure of Cape Lookout National Seashore, a barrier island system in North Carolina (USA), to projected SLR and storm hazards over the twenty-first...
Multi-decadal trophic shifts in Lake Erie yellow perch Perca flavescens
Joseph Schmitt, Ann Marie Gorman, Carey Knight, Mark Richard Dufour, James Roberts, Travis Hartman
2024, Canadian Journal of Fisheries and Aquatic Sciences (81) 1560-1580
In Lake Erie, yellow perch Perca flavescens support vast commercial and recreational fisheries, yet populations have recently declined. Using N = 5889 yellow perch stomachs collected from 1997 to 2021, we explored trends in the feeding ecology and trophic level of yellow perch with generalized additive models. Models revealed a significant decrease in yellow perch...
Predator-specific mortality of sage-grouse nests based on predator DNA on eggshells
Nolan A. Helmstetter, Courtney J. Conway, Shane Roberts, Jennifer R. Adams, Paul D. Makela, Lisette P. Waits
2024, Ecology and Evolution (14)
Greater sage-grouse (hereafter sage-grouse; Centrocercus urophasianus) populations have declined across their range. Increased nest predation as a result of anthropogenic land use is one mechanism proposed to explain these declines. However, sage-grouse contend with a diverse suite of nest predators that vary in functional traits (e.g., search tactics or hunting mode)...
Tissue distribution and temporal and spatial assessment of per- and polyfluoroalkyl substances (PFAS) in smallmouth bass (Micropterus dolomieu) in the mid-Atlantic United States
Vicki S. Blazer, Heather L. Walsh, Cheyenne R. Smith, Stephanie E. Gordon, Brandon J. Keplinger, Timothy Wertz
2024, Environmental Science and Pollution Research (p.) 59302-59319
Per- and polyfluoroalkyl substances (PFAS) have become an environmental issue worldwide. A first step to assessing potential adverse effects on fish populations is to determine if concentrations of concern are present in a region and if so, in which watersheds. Hence, plasma from adult smallmouth bass Micropterus dolomieu collected at 10 sites...
Cooperative conservation actions improve sage-grouse population performance within the Bi-State Distinct Population Segment
Peter S. Coates, Brian G. Prochazka, Sarah C. Webster, Cali L. Weise, Cameron L. Aldridge, Michael S. O’Donnell, Lief A. Wiechman, Kevin E. Doherty, John C. Tull
2024, Rangeland Ecology & Management (97) 135-145
Developing a robust monitoring framework that integrates efficacy assessments of cooperative conservation and restoration actions in relation to population viability is critical for successful long-term recovery of target ecosystems and species. However, often it is difficult to quantify conservation action efficacy because of the complex, dynamic nature of ecosystem processes...
Self-potential tomography preconditioned by particle swarm optimization— Application to monitoring hyporheic exchange in a bedrock river
Scott Ikard, Kenneth C. Carroll, Scott C. Brooks, Dale F. Rucker, Gladisol Smith-Vega, Aubrey Elwes
2024, Water Resources Research (60)
A self-potential (SP) data-inversion algorithm was developed and tested on an analytical model of electrical-potential profile data attributed to single and multiple polarized electrical sources. The developed algorithm was then validated by an application to SP-monitoring field data measured on the floodplain of East Fork Poplar Creek, Oak Ridge, Tennessee,...
Handling effects on dispersal of PIT-tagged Flannelmouth Sucker
Sophia Marie Bonjour, Keith B. Gido, Mark C. McKinstry
2024, North American Journal of Fisheries Management (44) 1111-1120
ObjectiveHandling and tagging migrating fish might alter their behavior, limiting inference from mark–recapture studies. Posthandling flight of tributary spawning Flannelmouth Sucker Catostomus latipinnis was previously identified in Coal Creek in the upper Colorado River basin. Our objective was to determine if similar issues were present at McElmo Creek in...
Imaging of seismic discontinuities using an adjoint method
Frederick Pollitz, Leah Langer
2024, Geophysical Journal International (240) 96-116
For imaging of seismic discontinuities at depth, reverse time migration (RTM) is a powerful method to apply to recordings of seismic events. It is especially powerful when an extensive receiver array, numerous seismic sources, or both, permit adequate reconstruction of incident and scattered wavefields at depth. Reconstructing either the incident...
Radiogenic strontium- and uranium-isotope tracers of water-rock interactions and hydrothermal flow in the Upper Geyser Basin, Yellowstone Plateau Volcanic Field, USA
James B. Paces, Shaul Hurwitz, Lauren N Harrison, Jacob B. Lowenstern, R. Blaine McCleskey
2024, Geochemistry Geophysics, Geosystems (25)
Natural radiogenic isotopes (primarily 87Sr/86Sr) from hot springs in the Upper Geyser Basin of the Yellowstone Plateau volcanic field and associated rocks were used to evaluate groundwater flow patterns, water-rock reactions, and the extent of mixing between various groundwater sources. Thermal waters have very low uranium concentrations and 234U/238U...
A multi-objective approach for timber harvest scheduling to include management of at-risk species and spatial configuration objectives
Max D. Jones, Angela Larsen-Gray, Stephen P. Prisley, Holly L. Munro, Elizabeth Ann Hunter
2024, PLoS ONE (19)
Sustainable forestry typically involves integration of several economic and ecological objectives which, at times, may not be compatible with one another. Multi-objective prioritization via harvest scheduling programs can be used to elucidate these relationships and explore solutions. One such program is a spatially explicit harvest scheduler that adopts the Metropolis-Hastings...
Benthic community metrics track hydrologically stressed mangrove systems
Amanda Demopoulos, Jill Bourque, Jennifer McClain Counts, Nicole Cormier, Ken Krauss
2024, Diversity (16)
Mangrove restoration efforts have increased in order to help combat their decline globally. While restoration efforts often focus on planting seedlings, underlying chronic issues, including disrupted hydrological regimes, can hinder restoration success. While improving hydrology may be more cost-effective and have higher success rates than planting seedlings alone, hydrological restoration...
The geometry of fault reactivation and uplift along the central part of the Maacama fault zone, northern California Coast Ranges (USA)
Benjamin L. Melosh, Robert J. McLaughlin, Henry Ohlin
2024, Geosphere (20) 1511-1532
Fault reactivation of bedrock structures in active fault zones influences stress state and earthquake rupture phenomena through the introduction of weak slip surfaces that impact fault zone geometry and width. Yet, geometric relationships between modern faults and older reactivated faults are difficult to quantify in rocks that have experienced multiple...
Use of a numerical groundwater-flow model and projected climate scenarios to simulate the effects of future climate conditions on base flow for reach 1 of the Washita River alluvial aquifer and Foss Reservoir storage, western Oklahoma
Laura G. Labriola, John H. Ellis, Subhrendu Gangopadhyay, Pierre-Emmanuel Kirstetter, Yang Hong
2024, Scientific Investigations Report 2024-5082
To better understand the relation between climate variability and future groundwater resources in reach 1 of the Washita River alluvial aquifer and Foss Reservoir in western Oklahoma, the U.S. Geological Survey, in cooperation with the Bureau of Reclamation, used a previously published numerical groundwater-flow model and climate-model data to investigate...
Power analysis of water quality of standing water bodies in the Pacific Island Network, 2009–2017
P. Marcos Gorresen, Richard J. Camp, David F Raikow
2024, Report
The National Park Service (NPS) Inventory and Monitoring Division (IMD) aims to provide data on park ecosystems' health to guide management decisions. Since 2007, NPS IMD has monitored water quality in marine areas, streams, anchialine pools, wetlands, and lakes in the Pacific Island Network...
Influence of stream temperature and human disturbance on prespawn mortality of Chinook Salmon in the Willamette River basin
Katherine C. Carey, Michael L. Kent, Carl B. Schreck , Claire E. Couch, Luke Whitman, James Peterson
2024, North American Journal of Fisheries Management (44) 1147-1164
ObjectivePremature mortality of adult female Chinook Salmon Oncorhynchus tshawytscha is a major barrier to population recovery. The Willamette River basin, Oregon, typifies the problems that are faced by fishery managers in the Pacific Northwest (USA). Adult salmon are trapped and transported upstream of dams to access historical spawning...
Cave climate 100 meters below the surface in the pseudokarst of the Kilauea Southwest Rift Zone, Hawaii
Timothy N. Titus, Glen E. Cushing, Chris Okubo, Kaj E. Williams
Eve L. Kuniansky, Lawrence E. Spangler, editor(s)
2024, Conference Paper, U.S. Geological Survey Karst Interest Group Proceedings
Kīlauea volcano hosts numerous pit craters that are inferred to have formed in competent bedrock (lava flows with minor tephra and other sediments), including Wood Valley Pit Crater. The Wood Valley Pit Crater is a 50-meter-deep, nearly circular pit that includes access to a cave entrance, which provides an opportunity...
Silver carp experience metabolic and behavioral changes when exposed to water from the Chicago Area Waterway
Amy E. Schneider, Andrew J. Esbaugh, Aaron R. Cupp, C.D. Suski
2024, Scientific Reports (14)
One of the hallmarks of invasive species is their propensity to spread. Removing an invasive species after establishment is virtually impossible, and so considerable effort is invested in preventing the range expansion of invaders. Silver carp (Hypophthalmichthys molitrix) were discovered in the Mississippi River in 1981 and have spread throughout...
The status and conservation needs of the Micronesian Megapode (Megapodius laperouse laperouse) across the Mariana archipelago
Paul Radley, Richard J. Camp, Frederick A Amidon, Ann P. Marshall, P. Marcos Gorresen, Curt T. Kessler
2024, Pacific Conservation Biology (30)
ContextAccurate baseline data for wildlife populations are important to track trends of these populations over time and to identify threats to their long-term persistence.AimsWe aimed to assess the status and distribution of the little studied megapode (Megapodius laperouse laperouse) across the Mariana Islands.MethodsUsing passive...
A genetic assessment of natural barriers for isolating a habitat network proposed for Greenback Cutthroat Trout reintroduction
Taylor Stack, Matthew P. Fairchild, Rachel Geiger, Sara J. Oyler-McCance, Jennifer A. Fike, Christopher M. Kennedy, Dana L. Winkelman, Yoichiro Kanno
2024, Journal of Fisheries Management (44) 1062-1072
Objective: Native inland trout conservation efforts rely on physical barriers to exclude nonnative salmonids from target habitats. We used genetic techniques to evaluate a series of natural waterfalls for their potential to serve as barriers to prevent nonnative salmonids from entering a proposed reintroduction area for federally threatened Greenback Cutthroat...
Afterslip and creep in the rate-dependent framework: Joint inversion of borehole strain and GNSS displacements for the Mw 7.1 Ridgecrest earthquake
Catherine Hannagan, Richard Bennett, Andrew J. Barbour, Amanda N. Hughes
2024, Journal of Geophysics Research (129)
The elusive transition toward afterslip following an earthquake is challenging to capture with typical data resolution limits. A dense geodetic network recorded the Mw 7.1 Ridgecrest earthquake, including 16 Global Navigation Satellite System (GNSS) stations and 3 borehole strainmeters (BSM). The sub-nanostrain precision and sub-second sampling rate...
