2021 National park visitor spending effects: Economic contributions to local communities, states, and the nation
Catherine M. Cullinane Thomas, Matthew Flyr, Lynne Koontz
2022, Natural Resource Report NPS/NRSS/EQD/NRR-2022/2395
The National Park Service (NPS) manages the Nation’s most iconic destinations that attract millions of visitors from across the Nation and around the world. Trip-related spending by NPS visitors generates and supports economic activity within park gateway communities. This report summarizes the annual economic contribution analysis that measures how NPS...
The population genetics of the causative agent of snake fungal disease indicate recent introductions to the USA
Jason T. Ladner, Jonathan M. Palmer, Cassandra L. Ettinger, Jason E. Stajich, Terence M. Farrell, Brad M. Glorioso, Becki Lawson, Steven J. Price, Anne G. Stengle, Daniel A. Grear, Jeffrey M. Lorch
Andy P. Dobson, editor(s)
2022, PLoS Biology (20)
Snake fungal disease (SFD; ophidiomycosis), caused by the pathogen Ophidiomyces ophiodiicola (Oo), has been documented in wild snakes in North America and Eurasia, and is considered an emerging disease in the eastern United States of America. However, a lack of historical disease data has made it challenging to determine whether Oo is a recent...
Late Paleozoic flexural extension and overprinting shortening in the southern Ozark dome, Arkansas, USA: Evolving fault kinematics in the foreland of the Ouachita orogen
Mark R. Hudson, Kenzie J. Turner
2022, Tectonics (41)
Faults and folds on the southern flank of the Ozark dome in northern Arkansas, USA, record flexural extension in a foreland area followed by shortening in response to the late Paleozoic Ouachita orogeny. Map-scale structures and an analysis of fault-slip data collected systematically during geologic mapping demonstrate that most deformation...
Overturning stereotypes: The fuzzy boundary between recreational and subsistence inland fisheries
Elizabeth A. Nyboer, Holly Susan Embke, Ashley Robertson, Robert Arlinghaus, Shannon D. Bower, Claudio Baigun, T. Douglas Beard Jr., Steve J. Cooke, Ian. G. Cowx, John D. Koehn, Roman Lyach, Marco Milardi, Warren M. Potts, Abigail J. Lynch
2022, Fish and Fisheries (23) 1282-1298
Inland recreational fisheries provide numerous socio- economic benefits to fishers, families and communities. Recreationally harvested fish are also frequently consumed and may provide affordable and sustainable but undervalued contributions to human nutrition. Quantifying the degree to which recreationally harvested fish contribute to food security and subsistence is impeded by lack...
Evolving magma temperature and volatile contents over the 2008–2018 summit eruption of Kīlauea Volcano
Joshua Allen Crozier, Leif Karlstrom
2022, Science Advances (8)
Magma rheology and volatile contents exert primary and highly nonlinear controls on volcanic activity. Subtle changes in these magma properties can modulate eruption style and hazards, making in situ inference of their temporal evolution vital for volcano monitoring. Here, we study thousands of impulsive magma oscillations within the shallow conduit...
Luminescence sediment tracing reveals the complex dynamics of colluvial wedge formation
Harrison J. Gray, Christopher DuRoss, Sylvia Nicovich, Ryan D. Gold
2022, Science (8)
Paleoearthquake studies that inform seismic hazard rely on assumptions of sediment transport that remain largely untested. Here, we test a widespread conceptual model and a new numerical model on the formation of colluvial wedges, a key deposit used to constrain the timing of paleoearthquakes. We perform this test by applying...
Inversion of induced polarization-affected towed-transient electromagnetic data in a lateritic regolith geology: A case study from western Tanzania
Pradip Kumar Maurya, Denys Grombacher, John W. Lane, Johan Lind, Esben Auken
2022, Geophysics (87) B247-B254
For several decades, induced polarization (IP) effects on transient electromagnetic (TEM) responses have been observed. These effects can manifest as late-time negative transients or as rapidly decaying curves and are usually associated with highly polarizable bodies. If neglected, IP effects can lead to erroneous resistivity models. Recent work allows IP...
Review of field methods for monitoring Asian bears
Michael F. Proctor, David L. Garshelis, Prachi Thatte, Robert Steinmetz, Brian Crudge, Bruce N. McLellan, William J. McShea, Dusit Ngoprasert, M. Ali Nawaz, Siew Te Wong, Sandeep Sharma, Angela K. Fuller, Nishith Dharaiya, Karine Pigeon, Gabriella Fredriksson, Dajun Wang, Sheng Li, Mei-hsiu Hwang
2022, Global Ecology and Conservation (35)
Efficient and effective monitoring methods are required to assess population status and gauge efficacy of conservation actions for threatened species. Here we review the spectrum of field methods useful for monitoring distribution, occupancy, abundance, and population trend for the five species of Asian terrestrial bears. Methods reviewed include expert opinion,...
Rangeland Condition Monitoring Assessment and Projection (RCMAP)
Matthew B. Rigge
2022, Fact Sheet 2022-3036
The Rangeland Condition Monitoring Assessment and Projection (RCMAP) project has partnered with the Bureau of Land Management to provide annual maps of rangeland vegetation condition across the Western United States from 1985 to present. Annual mapping can assist land managers and scientists with monitoring changes to vegetation composition, evaluating past...
LANDFIRE data and applications
Inga P. La Puma, Timothy D. Hatten
2022, Fact Sheet 2022-3034
LANDFIRE is a Federal program that provides a suite of spatial datasets indicating areas of disturbance, vegetation and fuels distributions and structure, and historical conditions. The level of detail presented in LANDFIRE’s classifications of disturbance, vegetation, and fuels is unparalleled and can be used in a variety of applications, including...
River Metabolism Estimation Tools (RiverMET) with demo in the Illinois River Basin
Jay Choi, Katherine Michelle Bernabe Quion, Ariel Reed, Judson Harvey
2022, ESSOAr
Ecosystem metabolism quantifies the rate of production, maintenance, and decay of organic matter in terrestrial and aquatic systems. It is a fundamental measure of energy flow associated with biomass production by photosynthesizing organisms and biomass oxidation by respiring plants, animals, algae, and bacteria (Bernhardt et al., 2022) . Ecosystem metabolism...
Spatially explicit management of genetic diversity using ancestry probability surfaces
Robert Massatti, Daniel E. Winkler
2022, Methods in Ecology and Evolution (13) 2668-2681
1. Ecological restoration and conservation efforts are increasing worldwide and the management of intraspecific genetic variation in plants and animals, an important component of biodiversity, is increasingly valued. As a result, tailorable, spatially explicit approaches to map genetic variation are needed to support decision-making and management frameworks related to the...
Trans-crustal structural control of CO2-rich extensional magmatic systems revealed at Mount Erebus Antarctica
Graham J Hill, Phil E Wannamaker, Virginie Maris, J. A. Stodt, Michael Kordy, Martyn J. Unsworth, Paul A. Bedrosian, Erin L. Wallin, Danny F. Uhlmann, Yasuo Ogawa, Philip R. Kyle
2022, Nature Communications (13)
Erebus volcano, Antarctica, with its persistent phonolite lava lake, is a classic example of an evolved, CO2-rich rift volcano. Seismic studies provide limited images of the magmatic system. Here we show using magnetotelluric data that a steep, melt-related conduit of low electrical resistivity originating in the upper mantle undergoes pronounced...
Integrated animal movement and spatial capture–recapture models: Simulation, implementation, and inference
B. Gardner, B.T. McClintock, Sarah J. Converse, Nathan J. Hostetter
2022, Ecology (103)
Over the last decade, spatial capture–recapture (SCR) models have become widespread for estimating demographic parameters in ecological studies. However, the underlying assumptions about animal movement and space use are often not realistic. This is a missed opportunity because interesting ecological questions related to animal space use, habitat selection, and behavior...
P- and S-wave velocity estimation by ensemble Kalman inversion of dispersion data for strong motion stations in California
Elif Ecem Bas, Elnaz Seylabi, Alan K. Yong, Hesam Tehrani, Domniki Asimaki
2022, Geophysical Journal International (231) 536-551
This study uses an ensemble Kalman method for near-surface seismic site characterization of 154 network earthquake monitoring stations in California to improve the resolution of S-wave velocity (VS) and P-wave velocity (VP) profiles—up to the resolution depth—coupled with better quantification of uncertainties compared to previous site characterization studies at this network. These...
Geologic controls on groundwater salinity reversal in North Coles Levee Oil Field, southern San Joaquin Valley, California, USA
Michael D Flowers, David H. Shimabukuro, Michael J. Stephens, John G. Warden, Janice M. Gillespie, Will Chang
2022, Environmental Earth Sciences (81)
This paper documents a reversal in the groundwater salinity depth gradient in the North Coles Levee Oil Field in the San Joaquin Valley, California. Salinity, measured in mg/L, was mapped with water quality data from groundwater and oil and gas wells and salinity estimated from oil...
Machine learning and data augmentation approach for identification of rare earth element potential in Indiana Coals, USA
Snahamoy Chatterjee, Maria Mastalerz, Agnieszka Drobniak, C. Ozgen Karacan
2022, International Journal of Coal Geology (259)
Rare earth elements and yttrium (REYs) are critical elements and valuable commodities due to their limited availability and high demand in a wide range of applications and especially in high-technology products. The increased demand and geopolitical pressures motivate the search for alternative sources of REYs, and coal, coal waste, and...
Modeling spatiotemporal abundance and movement dynamics using an integrated spatial capture–recapture movement model
Nathan J. Hostetter, E.V. Regehr, R.R. Wilson, J. Andrew Royle, Sarah J. Converse
2022, Ecology (103)
Animal movement is a fundamental ecological process affecting the survival and reproduction of individuals, the structure of populations, and the dynamics of communities. Methods to quantify animal movement and spatiotemporal abundances, however, are generally separate and therefore omit linkages between individual-level and population-level processes. We describe an integrated spatial capture–recapture...
Hydrogeology and groundwater quality in the San Agustin Basin, New Mexico, 1975–2019
Jeff D. Pepin, Rebecca E. Travis, Johanna M. Blake, Alex Rinehart, Daniel Koning
2022, Scientific Investigations Report 2022-5029
This report describes the findings of a U.S. Geological Survey study, completed in cooperation with the Bureau of Land Management, focused on better understanding the present-day (1975–2019) hydrogeology and groundwater quality of the San Agustin Basin in west-central New Mexico to support sustainable groundwater resource management. The basin hosts a...
Fundamental science and engineering questions in planetary cave exploration
J. Judson Wynne, Timothy N. Titus, Ali-akbar Agha-Mohammadi, Armando Azua-Bustos, Penelope J. Boston, Pablo de Leon, Cansu Demirel-Floyd, Jo de Waele, Heather Jones, Michael J. Malaska, Ana Z. Miller, Haley M. Sapers, Francesco Sauro, Derek L. Sonderegger, Kyle Uckert, Uland Y. Wong, E. Calvin Alexander Jr., Leroy Chiao, Glen E. Cushing, John DeDecker, Alberto G. Fairen, Amos Frumkin, Gary L. Harris, Michelle L. Kearney, Laura A. Kerber, Richard J. Leveille, Kavya Manyapu, Matteo Massironi, John E. Mylroie, Bogdan P. Onac, Scott E. Parazynski, Charity M. Phillips-Lander, T. H. Prettyman, Dirk Schulze-Makuch, Robert V. Wagner, William L. Whittaker, Kaj E. Williams
2022, JGR Planets (127)
Nearly half a century ago, two papers postulated the likelihood of lunar lava tube caves using mathematical models. Today, armed with an array of orbiting and fly-by satellites and survey instrumentation, we have now acquired cave data across our solar system—including the identification of potential cave entrances on the Moon,...
Constructing a large-scale landslide database across heterogeneous environments using task-specific model updates
Savinay Nagendra, Daniel Kifer, Benjamin B. Mirus, Te Pei, Kathryn Lawson, Srikanth Banagere Manjunatha, Weixin Li, Hien Nguyen, Tong Qiu, Sarah Tran, Chaopeng Shen
2022, IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing (15) 4349-4370
Preparation and mitigation efforts for widespread landslide hazards can be aided by a large-scale, well-labeled landslide inventory with high location accuracy. Recent smallscale studies for pixel-wise labeling of potential landslide areas in remotely-sensed images using deep learning (DL) showed potential but were based on data from very small, homogeneous regions...
Status and understanding of groundwater quality in the Sacramento Metropolitan Domestic-Supply Aquifer study unit, 2017—California GAMA Priority Basin Project
George L. Bennett V
2022, Scientific Investigations Report 2022-5021
Groundwater quality in the Sacramento Metropolitan Domestic-Supply Aquifer study unit (SacMetro-DSA) was studied from August to November 2017 as part of the second phase of the Priority Basin Project of the California Groundwater Ambient Monitoring and Assessment (GAMA) Program. The study unit is in parts of Amador, Placer, Sacramento, and...
Reducing uncertainty in climate change responses of inland fishes: A decision-path approach
Abigail Lynch, Bonnie Myers, Jesse P. Wong, Cindy Chu, Ralph W. Tingley III, Jeffrey A. Falke, Thomas J. Kwak, Craig P. Paukert, Trevor J. Krabbenhoft
2022, Conservation Science and Practice (4)
Climate change will continue to be an important consideration for conservation practitioners. However, uncertainty in identifying appropriate management strategies, particularly for understudied species and regions, constrains the implementation of science-based solutions and adaptation strategies. Here, we share a decision-path approach to reduce uncertainty in climate change responses of inland fishes...
Within-marsh and landscape features structure ribbed mussel distribution in Georgia, USA, marshes
William K. Annis, Elizabeth Ann Hunter, John M. Carroll
2022, Estuaries and Coasts (45) 2660-2674
Ribbed mussels, Geukensia demissa, are marsh fauna that are used in coastal management and restoration due to the ecosystem services they provide. Ribbed mussel restoration efforts may be improved with a greater understanding of the environmental drivers of ribbed mussel distribution at multiple spatial scales to predict areas where restoration could...
S/P amplitude ratios derived from single-component seismograms and their potential use in constraining focal mechanisms for micro-earthquake sequences
David R. Shelly, Robert John Skoumal, Jeanne L. Hardebeck
2022, The Seismic Record (2) 118-126
Focal mechanisms, which reflect the sense of slip in earthquakes, provide important constraints for understanding crustal tectonics and earthquake source physics, including the interactions among earthquakes during mainshock–aftershock sequences or seismic swarms. Focal mechanisms of small (magnitude ≲3.5) earthquakes are usually determined by...
