Efficient mammal biodiversity surveys for ecological restoration monitoring
Nicholas S. Green, Mark L. Wildhaber, Janice L. Albers, Thomas W. Pettit, Michael J. Hooper
2024, Integrated Environmental Assessment and Management (20) 1969-1981
Efficient biodiversity surveys are critical for successful restoration monitoring and management. We studied the effect of varying sampling effort on the observed species richness of surveys of small mammals (trapping transects), bats (passive acoustic detection), and medium to large mammals (trail cameras). Field studies provided mammalian biodiversity data for 4...
Mapping the resistivity structure of Walker Ridge 313 in the Gulf of Mexico using the marine CSEM method
Karen Weitemeyer, Steven Constable, Dianna Shelander, Seth S. Haines
2024, Marine and Petroleum Geology (88) 1013-1031
A marine controlled source electromagnetic (CSEM) campaign was carried out in the Gulf of Mexico to further develop marine electromagnetic techniques in order to aid the detection and mapping of gas hydrate deposits. Marine CSEM methods are used to obtain an electrical resistivity structure of the subsurface which can indicate...
Re-prioritization of the U.S. Geological Survey Federal Priority Streamgage Network, 2022
Jonathan J.A. Dillow, Brian E. McCallum, Cory E. Angeroth
2023, Open-File Report 2023-1032
The Federal Priority Streamgage (FPS) network of the U.S. Geological Survey (USGS), created in 1999 as the National Streamflow Information Program, receives Congressional appropriations to support the operation of a federally-funded “backbone” network of streamflow gages across the United States that are designated to meet the “Federal needs” or priorities...
Getting Started with MODFLFOW
Richard B. Winston
2023, Book
Numerical modeling of groundwater flow systems was once accessible only to modeling specialists in the hydrogeological community. Software such as MODFLOW—the most frequently used groundwater modeling program in the world—and associated graphical user interfaces (GUIs) have made modeling possible for most groundwater scientists. This book provides the bridge from understanding...
The presence of silicate melt may enhance rates of cation diffusion in olivine
Thomas Shea, Dawn Catherine Sweeney Ruth, Michael Jollands, Kenta Ohtaki, Hope Ishii, John Bradley
2023, Earth and Planetary Science Letters (621)
Olivine is commonly used as a ‘crystal clock’ to extract timescales relevant to pre-eruptive perturbations within mafic magmatic systems. Diffusion chronometry applications require accurate calibrations for the rates at which Fe-Mg or other commonly measured elements like Ni, Mn, and Ca...
Nonsalmonid gas bubble trauma investigations
Kenneth Tiffan, Brad D. Liedtke, Scott Louis Benson
Kenneth Tiffan, editor(s)
2023, Report
From 2020 to 2023, a new spill program was implemented to aid the downstream passage of juvenile salmonids at mainstem dams on the Snake and Columbia rivers. Under this program, the total dissolved gas (TDG) cap was increased to 125% and monitoring of nonsalmonids for gas bubble trauma (GBT) became...
A characterization of the deep-sea coral and sponge community along the Oregon Coast using a remotely operated vehicle on the EXPRESS 2022 expedition
Tom Laidig, Diana Watters, Meredith Everett, Nancy G. Prouty, Elizabeth Clarke
2023, Report
Deep-sea coral and sponge (DSCS) communities serve as essential fish habitat (EFH) by providing shelter and nursery habitat, increasing diversity, and increasing prey availability (Freese and Wing, 2003; Bright, 2007; Baillon et al., 2012; Henderson et al., 2020). Off the U.S. West Coast, threats to these long-lived, fragile organisms from...
Predicting large hydrothermal systems
Stanley Paul Mordensky, Erick R. Burns, Jacob DeAngelo, John Lipor
2023, Geothermal Resources Council Transactions (47) 1763-1796
We train five models using two machine learning (ML) regression algorithms (i.e., linear regression and XGBoost) to predict hydrothermal upflow in the Great Basin. Feature data are extracted from datasets supporting the INnovative Geothermal Exploration through Novel Investigations Of Undiscovered Systems project (INGENIOUS). The label data (the reported convective signals)...
Cursed? Why one does not simply add new data sets to supervised geothermal machine learning models
Stanley Paul Mordensky, Erick R. Burns, John Lipor, Jacob DeAngelo
2023, Geothermal Resources Council Transactions (47) 1288-1313
Recent advances in machine learning (ML) identifying areas favorable to hydrothermal systems indicate that the resolution of feature data remains a subject of necessary improvement before ML can reliably produce better models. Herein, we consider the value of adding new features or replacing other, low-value features with new input features...
Don’t Let Negatives Hold You Back: Accounting for Underlying Physics and Natural Distributions of Hydrothermal Systems When Selecting Negative Training Sites Leads to Better Machine Learning Predictions
Pascal D. Caraccioli, Stanley Paul Mordensky, Cary R. Lindsey, Jacob DeAngelo, Erick R. Burns, John Lipor
2023, Geothermal Resources Council Transactions (47) 1672-1693
Selecting negative training sites is an important challenge to resolve when utilizing machine learning (ML) for predicting hydrothermal resource favorability because ideal models would discriminate between hydrothermal systems (positives) and all types of locations without hydrothermal systems (negatives). The Nevada Machine Learning project (NVML) fit an artificial neural network to...
Ground-motion prediction equations for the western Kingdom of Saudi Arabia
Ryota Kiuchi, Walter D. Mooney, Hani M. Zahran
2023, Professional Paper 1862-O
Ground-motion prediction equations (GMPEs) for the western Kingdom of Saudi Arabia are developed by employing a mixed-effects regression model to modify the Boore and others (2014) Next Generation Attenuation-West2 (NGA-West2) project GMPEs. NGA-West2 addressed several key issues concerning GMPEs for shallow crustal earthquakes in active tectonic regions. However, the NGA-West2...
Ambient seismic noise tomography of the Kingdom of Saudi Arabia
Francesco Civilini, Walter D. Mooney, Martha K. Savage, John Townend
2023, Professional Paper 1862-N
Harrat Rahat is a Cenozoic volcanic field in the west-central part of the Kingdom of Saudi Arabia, 150 kilometers east of the Red Sea, and is the site of the most recent eruption in the country (1256 C.E.; 654 in the year of the Hijra). The city of Al Madīnah...
Magnetotelluric investigation of northern Harrat Rahat, Kingdom of Saudi Arabia
Jared R. Peacock, Paul A. Bedrosian, Maher K. Al-Dhahry, Adel Shareef, Daniel W. Feucht, Cliff D. Taylor, Benjamin Bloss, Hani M. Zahran
2023, Professional Paper 1862-L
Volcanism within the harrats (Arabic for “volcanic field”) of the Kingdom of Saudi Arabia includes at least one historical eruption occurring close to the holy city of Al Madīnah in 1256 C.E. As part of a volcanic- and seismic-hazard assessment of northern Harrat Rahat, magnetotelluric (MT) data were collected to...
Mantle origin and crustal differentiation of basalts and hawaiites of northern Harrat Rahat, Kingdom of Saudi Arabia
Thomas W. Sisson, Drew T. Downs, Andrew T. Calvert, Hannah R. Dietterich, Gail A. Mahood, Vincent J.M. Salters, Mark E. Stelten, Jamal Shawali
2023, Professional Paper 1862-I
Quaternary volcanic rocks of northern Harrat Rahat, Kingdom of Saudi Arabia, are chiefly alkali basalts with subordinate transitional basalts, hawaiites, mugearites, benmoreites, and trachytes. Geochemical and isotopic results indicate that crystallization-differentiation, mixing, and cumulate reassimilation within the magmatic system produced most of its compositional diversity, with only minor involvement of...
Lava flow emplacement in Harrat Rahat with implications for eruptions in mafic volcanic fields
Hannah R. Dietterich, Drew T. Downs, Mark E. Stelten
2023, Professional Paper 1862-E
Mafic volcanic fields are widespread, but few have erupted in historical times, providing limited observations of the magnitudes, dynamics, and timescales of lava flow emplacement in these settings. The Harrat Rahat volcanic field in western Saudi Arabia offers a good opportunity to study eruptions in such a setting, with a...
Eruptive history of northern Harrat Rahat—Volume, timing, and composition of volcanism over the past 1.2 million years
Mark E. Stelten, Drew T. Downs, Duane E. Champion, Hannah R. Dietterich, Andrew T. Calvert, Thomas W. Sisson, Gail A. Mahood, Hani M. Zahran
2023, Professional Paper 1862-D
Harrat Rahat, one of several large, basalt-dominated volcanic fields in the western part of the Kingdom of Saudi Arabia, is a prime example of continental, intraplate volcanism. Excellent exposure makes this an outstanding site to investigate changing volcanic flux and composition through time. We present 93 40Ar/39Ar ages and 6...
Ancient infrastructure offers sustainable agricultural solutions to dryland farming
Matthew C. Pailes, Laura M. Norman, Christopher H. Baisan, David Meko, Nicolas E. Gauthier, Jose Villanueva-Diaz, Jeff Dean, Jupiter Martinez, Nicholas V Kessler, Ron Towner
Rattan Lal, editor(s)
2023, Book chapter, Soil and drought: Basic processes
For 1000 years, human populations in dryland regions of the North American Southwest (NAS) extensively constructed diverse forms of agricultural infrastructure, including canals, linear rock alignments, check dams, stock ponds, and other earthworks and rock structures. The long-term hydrological impacts of these and the demographic and socio-political drivers of construction...
Evaluation of stream capture related to groundwater pumping, Lower Humboldt River Basin, Nevada
Cara A. Nadler, Susan C. Rybarski, Hai Pham
2023, Scientific Investigations Report 2023-5110
The Humboldt River Basin is the only river basin that is contained entirely within the State of Nevada. The effect of groundwater pumping on the Humboldt River is not well understood. Tools are needed to determine stream capture and manage groundwater pumping in the Humboldt River Basin. The objective of...
Evaluating growth rates of captive, wild, and reintroduced populations of the imperiled Eastern Indigo Snake (Drymarchon couperi)
Houston C. Chandler, David Steen, Jack Blue, James E. Bogan, M. Rebecca Bolt, Tony Brady, David R. Breininger, Jorge Buening, Matt Elliott, James Godwin, Craig Guyer, Robert L. Hill, Michelle Hoffman, Natalie L. Hyslop, Christopher L. Jenkins, Chris Lechowicz, Matt Moore, Robert A. Moulis, Sara Piccolomini, Robert Redmond, Frankie H. Snow, Benjamin S. Stegenga, Dirk J. Stevenson, James Stiles, Sierra Stiles, Mark Wallace, Jimmy Waters, Michael Wines, Javan Mathias Bauder
2023, Herpetologica (79) 220-230
Reintroduction of species at sites where populations have been extirpated has become a common technique in wildlife conservation. To track progress towards reintroduction success, effective postrelease monitoring is needed to document vital rates of individuals and the corresponding impact on population trajectories. We assessed growth and body size in Eastern...
Atmospheric correction intercomparison of hyperspectral and multispectral imagery over agricultural study sites
Brian T. Lamb, W. Dean Hively, Jyoti Jennewein, Alison Thieme, Alexander M. Soroka
2023, Conference Paper, International Symposium on Geoscience and Remote Sensing (IGARSS): Conference Proceedings
In this research effort we assess the performance of atmospheric correction-based surface reflectance (SR) retrievals from two satellite image sources, one with very high spatial resolution (VHR) (<5-m) and the other high spectral resolution (~10-nm). The VHR images are from MAXARs WorldView-3 (WV3) satellite and the high spectral resolution images...
Connecting flood-related fluvial erosion and deposition with vulnerable downstream road-stream crossings
Faith A. Fitzpatrick, Kyle H. Magyera, Jason Laumann, Clement Larson, Stephanie Rockwood, Eric D. Dantoin, Tom Hollenhorst, Brandon Krumwiede, Brandon Ray Nelson, Julia G. Prokopec, Keegan Eland Johnson
2023, Conference Paper, Federal Interagency Sedimentation and Hydrologic Modeling Conference (SedHyd) 2023 Conference Proceedings
Fluvial erosion is increasingly responsible for infrastructure and building damages associated with floods as the intensity of extreme rainfalls hit rural and urban rivers in a variety of climate settings across the United States. Extreme floods in 2016 and 2018 caused widespread culvert blockages and road failures, including extensive damage along steep tributaries...
Sea-ice conditions predict polar bear land use around military installations in Alaska
Eric V. Regehr, Kristin L. Laidre, Todd C. Atwood, Harry Stern, Benjamin R. Cohen
2023, Human-Wildlife Interactions (17)
Polar bears (Ursus maritimus) are threatened by sea-ice loss due to climate change, which is concurrently opening the Arctic to natural resource extraction and a broader scope of national security responsibilities. Mitigating the risk of human–bear conflicts is an emerging challenge as many polar bears spend longer ice-free...
Climate impacts to inland fishes: Shifting research topics over time
Abigail Lynch, Andrew DiSanto, Julian D. Olden, Cindy Chu, Craig Paukert, Daria Gundermann, Mitchel Lang, Ray Zhang, Trevor J. Krabbenhoft
2023, PLOS Climate (2)
Climate change remains a primary threat to inland fishes and fisheries. Using topic modeling to examine trends and relationships across 36 years of scientific literature on documented and projected climate impacts to inland fish, we identify ten representative topics within this body of literature: assemblages, climate...
Gap analysis: A proposed methodology to describe and map historical and contemporary populations and habitats
Cory Brant, Karen M Alofs, Chris Castiglione, Susan E. Doka, Alexander T. Duncan, Dave Fielder, Matthew Herbert, Arunas Liskauskus, Edward S. Rutherford, Jason Smith, Ralph W. Tingley III, Ted Treska, Ted Turschak, Cindy Chu, Peter C. Esselman
2023, Report
This is a methodology paper that describes an approach for modeling and mapping historical and contemporary spawning areas for coregonine fishes in the Laurentian Great Lakes. Coregonines are a family of native whitefishes and ciscoes that are now greatly reduced or extirpated, but once served important roles for both the...
Lactation performance in polar bears is associated with fasting time and energetic state
Louise C. Archer, Stephen N. Atkinson, Anthony M. Pagano, Stephanie R. Penk, Peter K. Molnar
2023, Marine Ecology Progress Series (720) 175-189
Females must continually make resource allocation decisions because of fitness trade-offs between self-maintenance and investment in current offspring, yet factors underpinning these decisions are unresolved. Polar bears Ursus maritimus face considerable allocation challenges when seasonal sea-ice melt precludes access to prey for several months, and females rely solely on energy stores...
