Contrasting demographic responses under future climate for two populations of a montane amphibian
Amanda M. Kissel, Wendy J. Palen, Michael J. Adams, Justin M Garwood
2024, Climate Change Ecology (7)
For species with complex life histories, climate change can have contrasting effects for different life stages within locally adapted populations and may result in responses counter to general climate change predictions. Using data from two, 14-year demographic studies for a North...
Major fluvial erosion and a 500-Mt sediment pulse triggered by lava-dam failure, Río Coca, Ecuador
Pedro D. Barrera Crespo, Pablo Espinoza Giron, Renan Bedoya, Stanford Gibson, Amy E. East, Eddy J. Langendoen, Paul M Boyd
2024, Earth Surface Processes and Landforms (49) 1058-1080
The failure of a 144-m-high lava-dam waterfall on the Río Coca, Ecuador, in February 2020 initiated a catastrophic watershed reset—regressive erosion upstream and a massive sediment pulse downstream—as the river evolves towards a new equilibrium grade. The evolution of this river corridor after a...
Non-negligible near-term risk of extinction to the eastern migratory population of monarch butterflies—An updated assessment (2006–22)
Wayne E. Thogmartin
2024, Open-File Report 2023-1097
The eastern migratory population of monarch butterflies (Danaus plexippus) started declining as early as the mid-1970s and seemed to stop declining by the early 2000s; the population now (about 2022) persists at a much-reduced abundance. Stochastic variation in abundance, at levels typical of monarch butterflies and other insects, was assessed...
Slope Unit Maker (SUMak): An efficient and parameter-free algorithm for delineating slope units to improve landslide modeling
Jacob Bryson Woodard, Benjamin B. Mirus, Nathan J. Wood, Kate E. Allstadt, Ben Leshchinsky, Matthew Crawford
2024, Natural Hazards and Earth Systems Sciences (NHESS) (24) 1-12
Slope units are terrain partitions bounded by drainage and divide lines. In landslide modeling, including susceptibility modeling and event-specific modeling of landslide occurrence, slope units provide several advantages over gridded units, such as better capturing terrain geometry, improved incorporation of geospatial landslide-occurrence data in...
Global potential distribution of mangroves: Taking into account salt marsh interactions along latitudinal gradients
Lina Cui, Don DeAngelis, Uta Berger, Minmin Cao, Yaqi Zhang, Xiaomin Zhang, Jiang Jiang
2024, Journal of Environmental Management (351)
Mangrove is one of the most productive and sensitive ecosystems in the world. Due to the complexity and specificity of mangrove habitat, the development of mangrove is regulated by several factors. Species distribution models (SDMs) are effective tools to identify the potential habitats for establishing and regenerating the ecosystem. Such...
Estimating lithium concentrations in groundwater used as drinking water for the conterminous United States
Melissa A. Lombard, Eric E. Brown, Daniel Saftner, Monica M. Arienzo, Esme Fuller-Thomson, Craig J. Brown, Joseph D. Ayotte
2024, Environmental Science and Technology (58) 1255-1264
Lithium (Li) concentrations in drinking-water supplies are not regulated in the United States; however, Li is included in the 2022 U.S. Environmental Protection Agency list of unregulated contaminants for monitoring by public water systems. Li is used pharmaceutically to treat bipolar disorder, and studies have linked its occurrence in drinking...
Rapid estimation of single-station earthquake magnitudes with machine learning on a global scale
Sydney Dybing, William L. Yeck, Hank M. Cole, Diego Melgar
2024, Bulletin of the Seismological Society of America (114) 1523-1538
The foundation of earthquake monitoring is the ability to rapidly detect, locate, and estimate the size of seismic sources. Earthquake magnitudes are particularly difficult to rapidly characterize because magnitude types are only applicable to specific magnitude ranges, and location errors propagate to substantial magnitude errors. We developed a method for...
Mass-balance-consistent geological stock accounting: A new approach toward sustainable management of mineral resources
Mark U. Simoni, Johannes A. Drielsma, Magnus Ericsson, Andrew G. Gunn, Sigurd Heiberg, Tom A. Heldal, Nedal T. Nassar, Evi Petavratz, Daniel B. Muller
2024, Environmental Science and Technology (58) 971-990
Global resource extraction raises concerns about environmental pressures and the security of mineral supply. Strategies to address these concerns depend on robust information on natural resource endowments, and on suitable methods to monitor and model their changes over time. However, current mineral resources and reserves reporting and accounting workflows are...
Identifying conditions where reed canarygrass (Phalaris arundinacea) functions as a driver of forest loss in the Upper Mississippi River floodplain under different hydrological scenarios
Nathan R. De Jager, Jason J. Rohweder, Molly Van Appledorn, Enrika Hlavacek, Andy Meier
2024, Wetlands Ecology and Management (32) 153-170
Most of the world’s river-floodplain ecosystems are simultaneously undergoing modifications to their hydrological regimes and experiencing species invasions, making it unclear whether invasive species are the main drivers of ecosystem change or simply responding to changes in the hydrological regime.We simulated patterns of forest recruitment and...
Snake River Fall Chinook Salmon research and monitoring
Russell W. Perry, Dalton Hance, John Plumb, Kenneth F. Tiffan, Brad Bickford, Scott Louis Benson, Tobyn Rhodes, Steve Brink, Brad Alcorn
Kenneth F. Tiffan, editor(s)
2024, Report
In Chapter 1, we report on development and application of an integrated population model (IPM) for the natural-origin fall Chinook salmon population upstream of Lower Granite Dam. This year’s efforts represent the third update to the model. Initial efforts focused on generating juvenile and adult abundance estimates, with...
Recent applications of the USGS National Crustal Model for Seismic Hazard Studies
Oliver S. Boyd, James Andrew Smith, Morgan P. Moschetti, Brad T. Aagaard, Robert Graves, Evan Tyler Hirakawa, Sean Kamran Ahdi
2024, Conference Paper, Geologic mapping forum 23/24 abstracts
The U.S. Geological Survey is developing the National Crustal Model (NCM) for seismic hazard studies to facilitate modeling site, path, and source components of seismic hazard across the conterminous United States. The NCM is composed of a 1km grid of geophysical profiles, extending from the Earth’s surface into the upper...
Investigating the atmospheric conditions associated with impactful shallow landslides in California (USA)
Nina S. Oakley, Jonathan P. Perkins, Samuel M. Bartlett, Brian D. Collins, Karimah Halona Comstock, Dianne L. Brien, W.P. Burgess, Skye C. Corbett
2024, Earth Interactions (28)
Shallow landslides are often triggered during rainfall events, which can increase subsurface soil water pressure and destabilize hillslopes. The likelihood of regional shallow landslide initiation is often assessed through a comparison of rainfall intensity and duration to pre-established thresholds. While informative for landslide warning, this exclusive focus on rainfall exceeding...
Watershed hydrology assessment for the Lower Colorado River Basin. Appendix D: RiverWare analyses
David Wallace, Kara M. Watson
2024, Report
RiverWare is a river system modeling tool developed by CADSWES (Center of Advanced Decision Support for Water and Environmental Systems) that allows the user to simulate complex reservoir operations and perform period-of-record analyses for different scenarios. For the InFRM hydrology studies, RiverWare is used to generate a homogeneous regulated POR...
Ecology of Lake Erie - Chemistry, plankton & planktivory: A synthesis
Stuart A. Ludsin, Mohiuddin Munawar, Robin L. DeBruyne, E. Todd Howell, Jeffrey Tyson, James M. Watkins
2024, Aquatic Ecosystem Health and Management (27) 116-124
As with other large lake ecosystems worldwide, Lake Erie can be considered a moving target for management, owing to physicochemical and biological changes brought on by anthropogenic change, both planned (e.g. nutrient and fisheries management) and unplanned (e.g. climate change, invasive species, modified land-use activities). These changes have challenged efforts...
Need and vision for global medium-resolution Landsat and Sentinel-2 data products
Volker C. Radeloff, David P. Roy, Mike Wulder, Martha Anderson, Bruce D. Cook, Christopher J. Crawford, Mark Friedl, Feng Gao, Noel Gorelick, Matthew Hansen, Sean Healey, Patrick Hostert, Glynn Hulley, Justin Huntington, Dave Johnson, Christopher Neigh, Alexei Lyapustin, Leo Lymburner, Nima Pahlevan, Jean-Francois Pekel, Theodore A. Scambos, Crystal Schaaf, Peter Strobl, Eric Vermote, Curtis Woodcock, Hankui K. Zhang, Zhe Zhu
2024, Remote Sensing of Environment (300)
Global changes in climate and land use are threatening natural ecosystems, biodiversity, and the ecosystem services people rely on. This is why it is necessary to track and monitor spatiotemporal change at a level of detail that can inform science, management, and policy development. The current constellation of multiple Landsat and Sentinel-2 satellites...
Estimates of Southern White-tailed Ptarmigan daily nest survival from multiple sites in the Southern Rocky Mountains of Colorado
Gregory T. Wann, Amy E. Seglund, Phillip A. Street, Nicholas J. Parker, Shelley L. Nelson, Jonathan P. Runge, Clait E. Braun, Cameron L. Aldridge
2024, Avian Conservation and Ecology (19)
Estimating vital rates of avian species is important to understand population dynamics and develop potential conservation strategies that target rates for management. Avian species have reduced potential for high annual fecundity in alpine ecosystems due to a short breeding window and harsh weather conditions. We located nests from Southern White-tailed...
Longer holding times decrease dispersal but increase mortality of translocated scaled quail
Rebekah E. Ruzicka, Dale Rollins, Paul F. Doherty Jr., William L. Kendall
2024, Journal of Wildlife Management (88)
Scaled quail (Callipepla squamata) decline caused by habitat loss and fragmentation increased interest in translocation to reestablish populations. Yet factors determining translocation success are poorly understood. We tested hypotheses concerning the influence of source population and variation in delayed release strategy (1–9 weeks) on mortality and dispersal of wild-caught, translocated...
Merging integrated population models and individual-based models to project population dynamics of recolonizing species
L.S. Petracca, B. Gardner, B.T. Maletzke, Sarah J. Converse
2024, Biological Conservation (289)
Recolonizing species exhibit unique population dynamics, namely dispersal to and colonization of new areas, that have important implications for management. A resulting challenge is how to simultaneously model demographic and movement processes so that recolonizing species can be accurately projected over time and space. We introduce a framework for spatially...
Individual-based ecological particle tracking model (ECO-PTM) for simulating juvenile chinook salmon migration and survival through the Sacramento – San Joaquin Delta
Xiaochun Wang, Russell W. Perry, Adam C. Pope, Doug Jackson, Dalton Hance
2024, San Francisco Estuary and Watershed Science (22)
Recovery of endangered salmon species in the Central Valley of California amidst prolonged drought and climate change necessitates innovative water management actions that balance species recovery and California's water demands. We describe an individual-based ecological particle tracking model (ECO-PTM) that can be used to assess the efficacy of proposed actions....
Variable climate-growth relationships of quaking aspen (Populus tremuloides) among Sky Island mountain ranges in the Great Basin, Nevada, USA
Martin Senfeldr, Douglas J. Shinneman, Susan K. McIlroy, Paul Rogers, R. Justin DeRose
2024, Forest Ecology and Management (554)
The Great Basin is an arid province located in the interior western United States. The region encompasses millions of hectares and quaking aspen (Populus tremuloides Michx.) forests comprise a minor portion of the total area. However, montane aspen forests play a...
The Coastal Carbon Library and Atlas: Open source soil data and tools supporting blue carbon research and policy
James R. Holmquist, David H. Klinges, Michael Lonneman, Jaxine Wolfe, Brandon M. Boyd, Meagan J. Eagle, Jonathan Sanderman, Katherine Todd-Brown, Lauren N. Brown, E. Fay Belshe, Samantha K. Chapman, Ron Corstanje, Christopher N. Janousek, James T. Morris, Gregory E. Noe, Andre S. Rovai, Amanda C. Spivak, Megan Vahsen, Lisamarie Windham-Myers, Kevin D. Kroeger, Patrick Megonigal
2024, Global Change Biology (30)
Quantifying carbon fluxes into and out of coastal soils is critical to meeting greenhouse gas reduction and coastal resiliency goals. Numerous ‘blue carbon’ studies have generated, or benefitted from, synthetic datasets. However, the community those efforts inspired does not have a centralized, standardized database...
Conventional rare earth element mineral deposits: The global landscape
Nora K. Foley, Robert A. Ayuso
2024, Book chapter, Rare earth metals and minerals industries: Status and prospects
Four conventional mineral deposit types—carbonatite, alkaline igneous, heavy mineral sand, and regolith-hosted ion-adsorption clay deposits—currently supply global markets with the rare earth elements (REEs) and rare earth oxides (REOs) necessary to meet the technological needs of global communities. The unique properties of REEs make them useful in a wide variety...
Energy-related rare earth element sources
Allan Kolker, Liliana Lefticariu, Steven T. Anderson
2024, Book chapter, Rare earth metals and minerals industries: Status and prospects
Energy-related materials such as coal, coal-bearing wastes, and coal combustion products are traditionally thought of as sources or by-products of electric power generation. Increasingly, these materials are considered resources for their content of rare earth elements (REEs) and other useful constituents. In this chapter, we examine the distribution, modes of...
Hydrothermal monazite and xenotime chemistry as genetic discriminators for intrusion-related and orogenic gold deposits: Implications for an orogenic origin of the Pogo gold deposit, Alaska
Ryan D. Taylor, Garth E. Graham, Heather A. Lowers
2024, Mineralium Deposita (59) 949-967
Attempts to geochemically distinguish between metamorphic-hydrothermal systems that form orogenic gold deposits and both reduced and oxidized magmatic-hydrothermal systems using isotopes or metal associations have proven ambiguous, particularly for orogenic gold and reduced intrusion-related gold systems. The absence of conclusive geochemical discriminators and the overlap in...
The 2023 US 50-State National Seismic Hazard Model: Overview and implications
Mark D. Petersen, Allison Shumway, Peter M. Powers, Edward H. Field, Morgan P. Moschetti, Kishor S. Jaiswal, Kevin R. Milner, Sanaz Rezaeian, Arthur D. Frankel, Andrea L. Llenos, Andrew J. Michael, Jason M. Altekruse, Sean Kamran Ahdi, Kyle Withers, Charles Mueller, Yuehua Zeng, Robert E. Chase, Leah M. Salditch, Nico Luco, Kenneth S. Rukstales, Julie A. Herrick, Demi Leafar Girot, Brad T. Aagaard, Adrian Bender, Michael L. Blanpied, Richard W. Briggs, Oliver S. Boyd, Brandon Clayton, Christopher DuRoss, Eileen L. Evans, Peter J. Haeussler, Alexandra Elise Hatem, Kirstie Lafon Haynie, Elizabeth H. Hearn, Kaj M. Johnson, Zachary Alan Kortum, N. Simon Kwong, Andrew James Makdisi, Henry Mason, Daniel McNamara, Devin McPhillips, P. Okubo, Morgan T. Page, Frederick Pollitz, Justin Rubinstein, Bruce E. Shaw, Zheng-Kang Shen, Brian Shiro, James Andrew Smith, William J. Stephenson, Eric M. Thompson, Jessica Ann Thompson Jobe, Erin A. Wirth, Robert C. Witter
2024, Earthquake Spectra (40) 5-88
The US National Seismic Hazard Model (NSHM) was updated in 2023 for all 50 states using new science on seismicity, fault ruptures, ground motions, and probabilistic techniques to produce a standard of practice for public policy and other engineering applications (defined for return periods greater than ∼475...
