ENSO and NAO linkages to interannual salinity variability in north central Gulf of Mexico estuaries through teleconnections with precipitation
Gregg Snedden
2023, Estuarine, Coastal and Shelf Science (293)
Though the importance of Earth's internal climate modes such as the El Niño-Southern Oscillation (ENSO) and the North Atlantic Oscillation (NAO) to regional-scale climate variability is well recognized, the degree to which these oscillations are reflected by spatio-temporal salinity variability over interannual timescales in estuaries is less understood. Here an 11-year continuous salinity monitoring dataset spanning 223 stations...
Summary of the history and research of the U.S. Geological Survey gas hydrate properties laboratory in Menlo Park, California, active from 1993 to 2022
Laura A. Stern, Stephen H. Kirby
2023, Open-File Report 2023-1063
The U.S. Geological Survey (USGS) Clathrate Hydrate Properties Project, active from 1993 to 2022 in Menlo Park, California, stemmed from an earlier project on the properties of planetary ices supported by the National Aeronautics and Space Administration’s (NASA’s) Planetary Geology and Geophysics Program. We took a material science approach in...
California State waters map series—Benthic habitat characterization in the region offshore of Morro Bay, California
Guy R. Cochrane, Rikk Kvitek, Aaron Cole, Meghan Sherrier, Alia Roca-Lezra, Sean Hallahan, Peter Dartnell
2023, Open-File Report 2023-1064
Coastal and Marine Ecological Classification Standard geoform, substrate, and biotic component geographic information system products were developed for the California State waters of south-central California in the region offshore of Morro Bay. The study was motivated by interest in development of offshore wind-energy capacity and infrastructure in Federal waters offshore....
3-D wave propagation simulations of Mw 6.5+ earthquakes on the Tacoma Fault, Washington state, considering the effects of topography, a geotechnical gradient, and a fault damage zone
Ian P. Stone, Erin A. Wirth, Alex R. Grant, Arthur D. Frankel
2023, Bulletin of the Seismological Society of America (113) 2519-2542
We simulate shaking in Tacoma, Washington, and surrounding areas from Mw 6.5 and 7.0 earthquakes on the Tacoma fault. Ground motions are directly modeled up to 2.5 Hz using kinematic, finite‐fault sources; a 3D seismic velocity model considering regional geology; and a model mesh with 30 m sampling at the ground surface....
Upscaling wetland methane emissions from the FLUXNET-CH4 Eddy Covariance Network (UpCH4 v1.0): Model development, network assessment, and budget comparison
Gavin McNicol, Etienne Fluet-Chouinard, Zutao Ouyang, Sarah Knox, Zhang Zhen, Tuula Aalto, Sheel Bansal, Kuang-Yu Chang, Min Chen, Kyle Delwiche, Sarah Feron, Mathias Goeckede, Jinxun Liu, Avni Malhotra, Joe R. Melton, William Riley, Rodrigo Vargas, Kunxiaojia Yuan, Qing Yang, Qing Zhu, Pavel Alekseychik, Mika Aurela, David P. Billesbach, David I. Campbell, Jiquan Chen, Housen Chu, Ankur Desai, Eugenie Euskirchen, Jordan Goodrich, Timothy Griffis, Manuel Helbig, Takashi Hirano, Hiroki Iwata, Gerald Jurasinski, John King, Franziska Koebsch, Randall Kolka, Ken Krauss, Annalea Lohila, Ivan Mammarella, Mats Nilson, Asko Noormets, Walter Oechel, Matthias Peichl, Torsten Sachs, Ayaka Sakabe, Christopher Schulze, Oliver Sonnentag, Ryan C. Sullivan, Eeva-Stiina Tuittila, Masahito Ueyama, Timo Vesala, Eric Ward, Christian Wille, Guan Xhuan Wong, Donatella Zona, Lisamarie Windham-Myers, Benjamin Poulter, Robert B. Jackson
2023, AGU Advances (4)
Wetlands are responsible for 20%–31% of global methane (CH4) emissions and account for a large source of uncertainty in the global CH4 budget. Data-driven upscaling of CH4 fluxes from eddy covariance measurements can provide new and independent bottom-up estimates of wetland CH4 emissions. Here, we develop a six-predictor random forest upscaling model (UpCH4),...
An agent-based model to quantify energetics, movement and habitat selection of mid-continent mallards in the Mississippi Alluvial Valley
Florian G. Weller, Elisabeth B. Webb, Sean Fogenburg, William S. Beatty, Dylan Kesler, Robert H. Blenk, Kevin M. Ringelman, Matt L. Miller, John M. Eadie
2023, Ecological Modelling (485)
The dynamics of wintering waterfowl populations at the landscape scale are the result of complex interactions of environmental, behavioral and energetic drivers. Agent-based models provide a method to directly link these factors in a spatially explicit framework and allow the emergence...
Seasonal differences and grazing pressure alter the fate of gold nanoparticles in a microcosm experiment
Christina M. Bergemann, Astrid Avellan, Brittany G. Perrotta, Emily S. Bernhardt, Marie Simonin
2023, Environmental Science & Technology (57) 13970-13979
Gold nanoparticles (AuNPs) are used as models to track and predict NP fates and effects in ecosystems. Previous work found that aquatic macrophytes and their associated biofilm primarily drove the fate of AuNPs within aquatic ecosystems and that seasonality was an important abiotic factor in the fate of AuNPs. Therefore,...
Updates to CE-QUAL-W2 models for select U.S. Army Corps of Engineers reservoirs in the Willamette Valley Project and an inter-reservoir reach of the Middle Fork Willamette River, northwestern Oregon
Laurel E. Stratton Garvin, Norman L. Buccola, Stewart A. Rounds
2023, Scientific Investigations Report 2023-5085
Mechanistic models capable of simulating hydrodynamics and water temperature in rivers and reservoirs are valuable tools for investigating thermal conditions and their relation to dam operations and streamflow in river basins where upstream water storage and management decisions have an important influence on river reaches with threatened fish populations. In...
Informing management of recovering predators and their prey with ecological diffusion models
Joseph Michael Eisaguirre, Perry J. Williams, Xinyi Lu, Michelle L. Kissling, Paul A Schutte, Benjamin P Weitzman, William S. Beatty, George G. Esslinger, Jamie N. Womble, Mevin B. Hooten
2023, Frontiers in Ecology and the Environment (21) 479-488
The reintroduction and recovery of predators can be ecologically beneficial as well as socially and economically controversial. However, the growth and expansion of predator populations, and thus their ecological, social, and economic impacts, are not static but rather they vary in space and time. We propose a spatiotemporal statistical modeling...
Baiting and banding: Expert opinion on how bait trapping may influence the occurrence of highly pathogenic avian influenza (HPAI) among dabbling ducks
Jennifer F. Provencher, Alana A. E. Wilcox, Samantha E. J. Gibbs, Lesley-Anne Howes, Mark L. Mallory, Margo J. Pybus, Andrew M. Ramey, Eric T. Reed, Chris Sharp, Catherine Soos, Iga Stasiak, Jim O. Leafloor
2023, Journal of Wildlife Diseases (59) 590-600
A Eurasian lineage highly pathogenic avian influenza virus (HPAIV) of the clade 2.3.4.4b (Goose/Guangdong lineage) was detected in migratory bird populations in North America in December 2021, and it, along with its reassortants, have since caused wild and domestic bird outbreaks across the continent. Relative to previous outbreaks, HPAIV cases...
Importance of dense aquatic vegetation in seasonal phosphate and particle transport in an agricultural headwater stream
Hannah R. Field, Audrey H. Sawyer, Susan A. Welch, Ryan K. Benefiel, Devan M. Mathie, James M. Hood, Ethan D. Pawlowski, Diana L. Karwan, Rebecca M. Kreiling, Zackary I. Johnson, Brittany R. Hanrahan, Kevin W. King
2023, Water Resources Research (59)
Agricultural headwater streams and ditches commonly host dense stands of aquatic vegetation that grow and decay over seasons and exert physical and biological controls on the transport of nutrients from cropland to larger rivers. This study examined changes in the transport of phosphorus (P) in an agricultural...
Wind-modulated groundwater discharge along a microtidal Arctic coastline
Julia Guimond, Casu Demir, Barret L. Kurylyk, Michelle A. Walvoord, James W. McClelland, M. Bayani Cardenas
2023, Environmental Research Letters (18)
Groundwater discharge transports dissolved constituents to the ocean, affecting coastal carbon budgets and water quality. However, the magnitude and mechanisms of groundwater exchange along rapidly transitioning Arctic coastlines are largely unknown due to limited observations. Here, using first-of-its-kind coastal Arctic groundwater timeseries data, we evaluate the magnitude...
Using airborne electromagnetics to improve depth to bedrock estimates in Wisconsin
Burke J. Minsley, Kayla J Crosbie, James J. Duncker, Daniel T. Feinstein, Lisa Haas, Dave Hart, Randall J. Hunt, Matthew J. Komiskey
2023, Conference Paper
Depth to bedrock is an important factor in hydrologic systems. The thickness of glacial sediments overlying bedrock in Wisconsin controls the routing of groundwater in surficial aquifers and its Depth to bedrock is often an important factor in hydrologic systems because hydraulic properties of bedrock and overlying sediments are typically...
Supplying ecosystem services on US rangelands
David D. Briske, Steven R. Archer, Emily Burchfield, William Burnidge, Justin D. Derner, Hannah Gosnell, Jerry Hatfield, Clare E. Kazanski, Mona Khalil, Tyler J. Lark, Pamela L. Nagler, Osvaldo E. Sala, Nathan F. Sayre, Kimberly R. Stackhouse-Lawson
2023, Nature Sustainability (6) 1524-1532
Rangelands comprise 40% of the conterminous United States and they supply essential ecosystem services to society. A scenario assessment was conducted to determine how accelerating biophysical and societal drivers may modify their future availability. Four scenarios emerged: two may maintain rural communities by sustaining the prevailing...
Finding a GEM: The Grassland Effectiveness Monitoring (GEM) protocol provides a tiered approach for habitat treatment assessment across private lands incentive programs
Rebekah J. Rylander, Anna M. Matthews, Daniel Bunting, Michael C. Duniway, James J. Giocomo, Anna C. Knight, Adriana Leiva, Robert M. Perez, Kourtney Stonehouse, Derek Wiley, Don Wilhelm
2023, Conference Paper, America's Grasslands Conference: Reconnecting America's Grasslands
The soil store carbon dioxide from the atmosphere through different processes, depending on the use and management of the land. For the Maderas del Carmen and Ocampo natural protected areas, one of the main conservation goals is to preserve natural habitats, ensuring an ecological balance and making a sustainable. The...
Predicting exotic annual grass abundance in rangelands of the western United States using various precipitation scenarios
Devendra Dahal, Stephen P. Boyte, Michael Oimoen
2023, Rangeland Ecology and Management (90) 221-230
Expansion of exotic annual grass (EAG), such as cheatgrass (Bromus tectorum L.) and medusahead (Taeniatherum caput-medusae [L.] Nevski), could cause irreversible changes to arid and semiarid rangeland ecosystems in the western United States. The distribution and abundance of EAG species are highly affected by weather variables such as temperature and precipitation. The study's goal is to...
Ground motion and seismic hazard in the central and eastern United States
Morgan P. Moschetti, Eric M. Thompson, Oliver S. Boyd, Davis T. Engler, Bruce Worden, Gabriel Christian Ferragut, Sanaz Rezaeian, Peter M. Powers
2023, Report
This report describes work carried out under the U.S. Nuclear Regulatory Commission (NRC) Interagency Agreement to the U.S. Geological Survey (USGS) “Research to Support NRC’s Seismic Hazard Analyses” for Task 3, “Seismic Hazard and Ground Motion Models.” The focus of this work has been on evaluation of the Next Generation...
Fluorine-rich mafic lower crust in the southern Rocky Mountains: The role of pre-enrichment in generating fluorine-rich silicic magmas and porphyry Mo deposits
Joshua Mark Rosera, Ryan Edward Frazer, Ryan D. Mills, Kristin Jacob, Sean P. Gaynor, Drew S. Coleman, G. Lang Farmer
2023, American Mineralogist (108) 1573-1596
Fluorine-rich granites and rhyolites occur throughout the southern Rocky Mountains, but the origin of F-enrichment has remained unclear. We test if F-enrichment could be inherited from ancient mafic lower crust by: (1) measuring amphibole compositions, including F and Cl contents, of lower crustal mafic granulite xenoliths from northern Colorado to...
Constraints on the genesis of Au veins in interior Alaska: Evidence from geochronology and vein textures
Douglas C. Kreiner, William Thompson, Jonathan Saul Caine, Ashleigh Ball, Christopher S. Holm-Denoma, Paul O’Sullivan, Holly J. Stein
2023, Conference Paper, Proceedings of SGA 2023: Mineral resources in a changing world
The origin of Au-bearing, low sulfide quartz veins in the Pogo and Tibbs Creek regions of interior Alaska remain enigmatic. Intrusion-related Au and mesozonal orogenic vein models have both been proposed (Thompson and Newberry, 2000; Rhys et al., 2003; Goldfarb et al., 2022; Dilworth et al., 2007). To date, studies...
Induced seismicity and its impact on existing seismic hazard analysis
Charles Mueller, Allison M. Shumway
2023, Report
We develop a scheme for mapping changes in earthquake rates within a region in near-real-time. A specific goal of the work is to track recent changes in the rates of induced earthquakes in the central and eastern United States. We map rates in a time window of interest, map rates...
Interstate 15 wildlife crossing design considerations for focal wildlife species - Santa Ana-Palomar Mountains Linkage southern California
Trish Smith, Cheryl S. Brehme, Jill Carpenter, Nancy A. Frost, Megan Jennings, Barbara E. Kus, Scott Quinnell, Spring Straham, T. Winston Vickers
2023, Report
The Nature Conservancy (TNC) and the California Department of Transportation (Caltrans), along with landowners including San Diego State University, California Department of Fish and Wildlife, Western Riverside Regional Conservation Authority and Riverside County Flood Control District are developing wildlife crossing infrastructure projects along a 3-mile stretch of Interstate 15 (I-15)...
The consequences of neglecting reservoir storage in national-scale hydrologic models: An appraisal of key streamflow statistics
Glenn A. Hodgkins, Thomas M. Over, Robert W. Dudley, Amy M. Russell, Jacob H. LaFontaine
2023, Journal of the American Water Resources Association (60) 110-131
A better understanding of modeled streamflow errors related to basin reservoir storage is needed for large regions, which normally have many ungaged basins with reservoirs. We quantified the difference between modeled and observed streamflows for one process-based and three statistical-transfer hydrologic models, none of which explicitly accounted for reservoir storage....
Pre-eruptive outgassing and pressurization, and post-fragmentation bubble nucleation, recorded by vesicles in breadcrust bombs from vulcanian activity at Guagua Pichincha Volcano, Ecuador
Mathieu Colombier, Michael Manga, Heather M. Wright, Benjamin Bernard, Rebecca deGraffenried, Francisco Caceres, Pablo Samaniego, Jeremie Vasseur, K Jakata, Paul Cook, Donald B. Dingwell
2023, Journal of Geophysical Research - Solid Earth (128)
Breadcrust bombs formed during Vulcanian eruptions are assumed to originate from the shallow plug or dome. Their rim to core texture reflects the competition between cooling and degassing timescales, which results in a dense crust with isolated vesicles contrasting with a highly vesicular vesicle network in the...
Timing of reproduction underlies fitness tradeoffs for a salmonid fish
Jeffrey R Baldock, Robert Al-Chokhachy, Matthew R. Campbell, Annika W. Walters
2023, Oikos (2023)
Life history diversity is generated and maintained in part by density-dependent fitness tradeoffs that inhibit a single trait value from reaching fixation. While central to our understanding of evolution, demonstrating density dependence in the strength of fitness tradeoffs is difficult in natural systems. The...
Landowner and biologist perceptions of game bird predators and management
Samantha R. Fina, Larry M. Gigliotti, Aaron T. Pearse, Joshua D. Stafford
2023, Wildlife Society Bulletin (47)
Nest survival has been identified as one of the most influential vital rates causing population change in game birds, and depredation, often influenced by habitat loss and fragmentation, is the primary cause of nest failure of upland game birds. We were interested in quantifying and comparing the perspectives of landowners...
