Bottom-up and top-down control on hydrothermal resources in the Great Basin: An example from Gabbs Valley, Nevada
Jared R. Peacock, Drew L. Siler
2021, Geophysical Research Letters (48)
The Great Basin in the western United States hosts various hydrothermal systems, including both active geothermal systems and ancient systems preserved as mineral deposits. New magnetotelluric and structural geologic data were collected in the Gabbs Valley area of western Nevada to demonstrate the advantage of imaging the...
Multilayer perceptrons (MLPs)
C. Ozgen Karacan
2021, Book chapter, Encyclopedia of Mathematical Geosciences
Artificial neural networks (ANNs) are adaptable systems that can solve problems that are difficult to describe with a mathematical relationship. They seek relationships between different types of datasets with their abilities to learn either with supervision or without. ANNs recognize patterns between input and output space...
Decision-support framework for linking regional-scale management actions to continental-scale conservation of wide-ranging species
Erik E. Osnas, G. Scott Boomer, James H. Devries, Michael C. Runge
2021, Open-File Report 2020-1084
Anas acuta (Northern pintail; hereafter pintail) was selected as a model species on which to base a decision-support framework linking regional actions to continental-scale population and harvest objectives. This framework was then used to engage stakeholders, such as Landscape Conservation Cooperatives’ (LCCs’) habitat management partners within areas of importance to...
Digital Shoreline Analysis System (DSAS) version 5.1 user guide
Emily A. Himmelstoss, Rachel E. Henderson, Meredith G. Kratzmann, Amy S. Farris
2021, Open-File Report 2021-1091
The Digital Shoreline Analysis System version 5 software is an add-in to Esri ArcGIS Desktop version 10.4–10.7 that enables a user to calculate rate-of-change statistics from a time series of vector shoreline positions. The Digital Shoreline Analysis System provides an automated method for establishing measurement locations, performs rate calculations, provides...
Hydrogeomorphic recovery and temporal changes in rainfall thresholds for debris flows following wildfire
Olivia J. Hoch, Luke A. McGuire, Ann M. Youberg, Francis K. Rengers
2021, JGR Earth Surface (126)
Wildfire-induced changes to soil and vegetation promote runoff-generated debris flows in steep watersheds. Postfire debris flows are most commonly observed in steep watersheds during the first wet season following a wildfire, but it is unclear how long the elevated threat of debris flow persists and why debris-flow...
Shoreface and Holocene sediment thickness offshore of Rockaway Peninsula, New York
Emily A. Wei, Jennifer L. Miselis, Arnell S. Forde
2021, Open-File Report 2021-1100
During September and October 2019, the U.S. Geological Survey mapped the shoreface and inner continental shelf offshore of the Rockaway Peninsula in New York using high-resolution chirp seismic reflection and single-beam bathymetry geophysical techniques. The results from this study are important for assessing the Quaternary evolution of the Rockaway Peninsula...
Testing models of Laramide orogenic initiation by investigation of Late Cretaceous magmatic-tectonic evolution of the central Mojave sector of the California arc
R.C Economos, Andrew P. Barth, J.L. Wooden, S. R Paterson, Brody Friesenhahn, B.A Weigand, J.L. Anderson, J.L. Roell, E.F. Palmer, A.J. Ianno, Keith A. Howard
2021, Geosphere (17) 2042-2061
The Mojave Desert region is in a critical position for assessing models of Laramide orogenesis, which is hypothesized to have initiated as one or more seamounts subducted beneath the Cretaceous continental margin. Geochronological and geochemical characteristics of Late Cretaceous magmatic products provide the opportunity to test the validity of Laramide...
The Boreal-Arctic Wetland and Lake Dataset (BAWLD)
David Olefeldt, Mikael Hovemyr, M.A. Kuhn, D Bastviken, T.J. Bohn, J. Connolly, P.M. Crill, E.S. Euskirchen, S.A. Finkelstein, H. Genet, G. Grosse, L.I. Harris, L. Heffernan, M. Helbig, G. Hugelium, R. Hutchins, S. Juutinen, M.J. Lara, A. Malhotra, Kristen L. Manies, A.D. McGuire, S.M. Natali, J. A. O’Donnell, F-J.W. Parmentier, A. Rasanen, C. Schaedel, O. Sonnentag, M. Strack, S.E. Tank, C. C. Treat, R.K. Varner, T. Virtanen, J.D. Watts, R.K. Warren
2021, Earth System Science Data (13) 5127-5149
Methane emissions from boreal and arctic wetlands, lakes, and rivers are expected to increase in response to warming and associated permafrost thaw. However, the lack of appropriate land cover datasets for scaling field-measured methane emissions to circumpolar scales has contributed to a large uncertainty for our understanding of present-day and...
Regression models for estimating sediment, nutrient concentrations and loads at School Branch at Brownsburg, Indiana, June 2015 through February 2019
Myles S. Downhour, Aubrey R. Bunch, Timothy R. Lathrop
2021, Scientific Investigations Report 2021-5099
Sediment and nutrient transport in the School Branch watershed (in central Indiana west of Indianapolis) is considered to be heavily affected by agricultural land use throughout the watershed. In 2015, the U.S. Geological Survey, in cooperation with the Indiana Department of Environmental Management, deployed continuous water-quality monitors and began collecting...
Groundwater/surface-water interactions in the Partridge River Basin and evaluation of hypothetical future mine pits, Minnesota
Megan J. Haserodt, Randall J. Hunt, Michael N. Fienen, Daniel T. Feinstein
2021, Scientific Investigations Report 2021-5038
The Partridge River Basin (PRB) covers 156 square miles in northeastern Minnesota with headwaters in the Mesabi Iron Range. The basin is characterized by extensive wetlands, lakes, and streams in poorly drained and often thin glacial material overlying Proterozoic bedrock. To better understand the interaction between these extensive surface water...
Monitoring and modeling tree bat (Genera: Lasiurus, Lasionycteris) occurrence using acoustics on structures off the mid-Atlantic coast—Implications for offshore wind development
Michael C. True, Richard J. Reynolds, W. Mark Ford
2021, Animals (11)
In eastern North America, “tree bats” (Genera: Lasiurus and Lasionycteris) are highly susceptible to collisions with wind energy turbines and are known to fly offshore during migration. This raises concern about ongoing expansion of offshore wind-energy development off the Atlantic Coast. Season, atmospheric conditions, and site-level characteristics such...
Distribution of tiger salamanders in northern Sonora, Mexico: Comparison of sampling methods and possible implications for an endangered subspecies
Blake R. Hossack, Julio A. Lemos-Espinal, Brent H. Sigafus, Erin L. Muths, Gerardo Carreon Arroyo, Daniel Toyos Martinez, David Hurtado Felix, Guillermo Molina Padilla, Caren S. Goldberg, T. R. Jones, M. J. Sredl, Thierry Chambert, J. C. Rorabaugh
2021, Amphibia-Reptilia (43) 13-23
Many aquatic species in the arid USA-Mexico borderlands region are imperiled, but limited information on distributions and threats often hinders management. To provide information on the distribution of the Western Tiger Salamander (Ambystoma mavortium), including the USA-federally endangered Sonoran Tiger Salamander (Ambystoma mavortium stebbinsi), we used traditional (seines, dip-nets) and...
A basin-scale approach to estimating recharge in the desert: Anza-Cahuilla groundwater basin, CA
Michelle A. Stern, Lorraine E. Flint, Alan L. Flint, Allen H. Christensen
2021, Journal of the American Water Resources Association (57) 990-1003
The Anza-Cahuilla groundwater basin located mainly in the semi-arid headwaters of the Santa Margarita River watershed in southern California is the principle source of groundwater for a rural disadvantaged community and two Native American Tribes, the Ramona Band of Cahuilla and the Cahuilla. Groundwater in the study area is derived...
Modeling marsh dynamics using a 3-D coupled wave-flow-sediment model
Tarandeep S. Kalra, Neil K. Ganju, Alfredo Aretxabaleta, Joel A. Carr, Zafer Defne, Julia Moriarty
2021, Frontiers in Marine Science (8)
Salt marshes are dynamic biogeomorphic systems that respond to external physical factors, including tides, sediment transport, and waves, as well as internal processes such as autochthonous soil formation. Predicting the fate of marshes requires a modeling framework that accounts for these processes in a coupled fashion. In this study, we...
Causes, consequences, and conservation of ungulate migration
Matthew J. Kauffman, Ellen O. Aikens, Saeideh Esmaeili, Petra Kaczensky, Arthur Middleton, Kevin L. Monteith, Thomas A. Morrison, Thomas Mueller, Hall Sawyer, Jacob R. Goheen
2021, Annual Review of Ecology, Evolution, and Systematics (52) 453-478
Our understanding of ungulate migration is advancing rapidly due to innovations in modern animal tracking. Herein, we review and synthesize nearly seven decades of work on migration and other long-distance movements of wild ungulates. Although it has long been appreciated that ungulates migrate to enhance access to forage, recent contributions...
PlioMIP: The Pliocene Model Intercomparison Project
A. M. Haywood, Harry J. Dowsett, PlioMIP1 and PlioMIP2 participants
2021, Past Global Changes Magazine (29) 92-93
PlioMIP is a network of paleoclimate modelers and geoscientists who, through the study of the mid-Pliocene Warm Period (mPWP ~3.3–3.0 million years ago), seek to understand the sensitivity of the climate system to forcings and examine how well models reproduce past climate change....
Movement dynamics and survival of stocked Colorado River Cutthroat Trout
Alex G. LeCheminant, Gabriel M. Barrile, Shannon E. Albeke, Annika W. Walters
2021, Transactions of the American Fisheries Society (150) 679-693
The ability of native fish to establish self-sustaining populations when reintroduced to vacant habitats is variable. We evaluated factors that potentially affect the reintroduction success of juvenile Colorado River Cutthroat Trout Oncorhynchus clarkii pleuriticus that were reintroduced to an isolated watershed and were experiencing suboptimal survival and recruitment. We conducted a 3-year...
Numerical simulation of the boundary layer flow generated in Monterey Bay, California by the 2010 Chilean tsunami: Case study
Athanasios Makris, Jessica R. Lacy, David R. Fuhrman
2021, Journal of Waterway, Port, Coastal, and Ocean Engineering (147)
This work presents a case study involving the numerical simulation of the unsteady boundary layer generated by the 2010 Chilean tsunami, as measured by field equipment in Monterey Bay, California, USA. A one-dimensional vertical (1DV) boundary layer model is utilized, solving Reynolds-averaged Navier–Stokes equations, coupled with two-equation k–ω turbulence closure. Local effects...
The AEMON-J “Hacking Limnology” workshop series & virtual summit: Incorporating data science and open science in aquatic research
Michael F. Meyer, Robert Ladwig, Jorrit Mesman, Isabella Oleksy, Carolina C. Barbosa, Kaelin M. Cawley, Alli N. Cramer, Johannes Feldbauer, Patricia Q. Tran, Jacob Aaron Zwart, Gregario A. Lopez Moreira, Muhammed Shikhani, Deviyani Gurung, Robert T. Hensley, Elena Matta, Ryan P. McClure, Thomas Petzoldt, Nuria Sanchez Lopez, Karline Soetaert, Mridul K. Thomas, Simon Nemer Topp, Xiao Yang
2021, Limnology and Oceanography Bulletin (30) 140-143
Following the 2020 “Virtual Summit: Incorporating Data Science and Open Science in Aquatic Research” (DSOS; Meyer and Zwart 2020), a grassroots group of scientists convened the 2nd Virtual DSOS Summit on 22–23 July 2021. DSOS combined forces with the Aquatic Ecosystem MOdeling Network - Junior (AEMON-J; https://github.com/aemon-j) to host a 4-d “Hacking...
Synthesis of data and studies relating to Delta Smelt biology in the San Francisco Estuary, emphasizing water year 2017
Shawn Acuna, Randy Baxter, Aaron J. Bever, Larry R. Brown, Christina Burdi, Gonzalo Castillo, Louise Conrad, Steven Culberson, Lauren Damon, Jared Frantzich, Lenny Grimaldo, Bruce Hammock, April Hennessy, James A. Hobbs, Shruti Khanna, Peggy W. Lehman, Michael L. MacWilliams, Brian Mahardja, Andrew A. Schultz, Steven B. Slater, Ted Sommer, Swee Teh, Janet Thompson
2021, Interagency Ecological Program Technical Report 95
In the San Francisco Estuary (SFE), the effects of freshwater flow on the aquatic ecosystem have been studied extensively over the years and remains a contentious management issue. It is especially contentious with regards to the Delta Smelt (Hypomesus transpacificus), a species endemic to the SFE that has been listed...
System characterization report on Resourcesat-2 Advanced Wide Field Sensor
Shankar N. Ramaseri Chandra, Minsu Kim, Jon Christopherson, Gregory L. Stensaas, Cody Anderson
2021, Open-File Report 2021-1030-G
Executive SummaryThis report addresses system characterization of the Indian Space Research Organisation Resourcesat-2 Advanced Wide Field Sensor (AWiFS) and is part of a series of system characterization reports produced and delivered by the U.S. Geological Survey Earth Resources Observation and Science Cal/Val Center of Excellence in 2021. These reports present...
Northern bobwhite occupancy patterns on multiple spatial scales across Arkansas
E. V. Lassiter, M. Asher, G. Christie, C. Gale, A. Massey, C. Massery, C. R. MIddaugh, J. Veon, Brett Alexander DeGregorio
2021, Journal of Fish and Wildlife Management (12) 502-512
Northern bobwhite Colinus virginianus populations have been rapidly declining in the eastern, central, and southern United States for decades. Land use change and an incompatibility between northern bobwhite resource needs and human land use practices have driven declines. Here, we applied occupancy analyses on two spatial scales (state level and ecoregion level)...
Synergistic interventions to control COVID-19: Mass testing and isolation mitigates reliance on distancing
Emily Howerton, Matthew J. Ferrari, Ottar N Bjornstad, Tiffany L. Bogich, Rebecca K. Borchering, Chris P. Jewell, James D. Nichols, William J.M. Probert, Michael C. Runge, Michael J. Tildesley, Cecile Viboud, Katriona Shea
2021, PLOS Computational Biology (17)
Stay-at-home orders and shutdowns of non-essential businesses are powerful, but socially costly, tools to control the pandemic spread of SARS-CoV-2. Mass testing strategies, which rely on widely administered frequent and rapid diagnostics to identify and isolate infected individuals, could be a potentially less disruptive management strategy,...
Riverscape-scale modeling of fundamentally suitable habitat for mussel assemblages in an Ozark River system, Missouri
K. Keymanesh, Amanda E. Rosenberger, G. Lindner, Kristen L. Bouska, Stephen E. McMurray
2021, Freshwater Mollusk Biology and Conservation (24) 43-58
Identifying the physical habitat characteristics associated with riverine freshwater mussel assemblages is challenging but crucial for understanding the causes of mussel declines. The occurrence of mussels in multispecies beds suggests that common physical factors influence or limit their occurrence. Fine-scale geomorphic and hydraulic factors (e.g., scour, bed stability) are predictive...
Geologic and hydrogeologic characteristics of the White River Formation, Lance Formation, and Fox Hills Sandstone, northern greater Denver Basin, southeastern Laramie County, Wyoming
Timothy T. Bartos, Devin L. Galloway, Laura L. Hallberg, Marieke Dechesne, Sharon F. Diehl, Seth L. Davidson
2021, Scientific Investigations Report 2021-5020
In cooperation with the Wyoming State Engineer’s Office, the U.S. Geological Survey studied the geologic and hydrogeologic characteristics of Cenozoic and Upper Cretaceous strata at a location in southeastern Laramie County within the Wyoming part of the Cheyenne Basin, the northern subbasin of the greater Denver Basin. The study aimed...
