Publications
Browse more than 160,000 publications authored by our scientists over the past 100+ year history of the USGS. Publications available are: USGS-authored journal articles, series reports, book chapters, other government publications, and more.
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U.S. Geological Survey science vision for native freshwater mussel research in the United States U.S. Geological Survey science vision for native freshwater mussel research in the United States
Executive Summary North America is a global center for native freshwater mussel (order Unionida, hereinafter “mussels”) diversity, with more than 350 species. Mussels are among the most imperiled fauna on the planet. Reasons for both local and widespread declines in mussels are mostly unknown, although the threats may include habitat loss and fragmentation, diseases, environmental...
Authors
Teresa J. Newton, Nathan A. Johnson, David H. Hu
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 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
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. In addition, we explore how adjustments to the seismic velocity...
Authors
Ian P. Stone, Erin A. Wirth, Alex R. Grant, Arthur D. Frankel
2.d.7 Lake water levels 2.d.7 Lake water levels
No abstract available.
Authors
Benjamin M. Kraemer, Hilary A. Dugan, Sofia La Fuente, Michael Frederick Meyer
Upscaling wetland methane emissions from the FLUXNET-CH4 Eddy Covariance Network (UpCH4 v1.0): Model development, network assessment, and budget comparison Upscaling wetland methane emissions from the FLUXNET-CH4 Eddy Covariance Network (UpCH4 v1.0): Model development, network assessment, and budget comparison
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), trained on 119 site-years...
Authors
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
An agent-based model to quantify energetics, movement and habitat selection of mid-continent mallards in the Mississippi Alluvial Valley An agent-based model to quantify energetics, movement and habitat selection of mid-continent mallards in the Mississippi Alluvial Valley
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 of patterns from the aggregation of individual agent actions. We adapted the Spatially-explicit...
Authors
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
Memorial to Norman W. Ten Brink (1943–2023) Memorial to Norman W. Ten Brink (1943–2023)
No abstract available.
Authors
William J. Neal, Alan Werner, Christopher F. Waythomas
Evaluation of fall-seeded cover crops for grassland nesting waterfowl in eastern South Dakota Evaluation of fall-seeded cover crops for grassland nesting waterfowl in eastern South Dakota
The Prairie Pothole Region (PPR) is the primary breeding ground for many species of North American waterfowl. The PPR was historically dominated by mixed and tallgrass prairies interspersed with wetlands, but >70% of the native grassland area has been lost due to widespread conversion to croplands. Cover cropping is a reemerging farming technique that may provide suitable nesting cover...
Authors
Charles W. Gallman, Todd W. Arnold, Eric S. Michel, Joshua D. Stafford
Seasonal differences and grazing pressure alter the fate of gold nanoparticles in a microcosm experiment Seasonal differences and grazing pressure alter the fate of gold nanoparticles in a microcosm experiment
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, the present work aims to study if grazers, by feeding on these...
Authors
Christina M. Bergemann, Astrid Avellan, Brittany G. Perrotta, Emily S. Bernhardt, Marie Simonin
Contrasting mercury contamination scenarios and site susceptibilities confound fish mercury burdens in Suriname, South America Contrasting mercury contamination scenarios and site susceptibilities confound fish mercury burdens in Suriname, South America
In Suriname, mercury (Hg) use has recently increased because of gold mining, which has put fish-reliant communities (e.g., Indigenous and Tribal) at risk of enhanced Hg exposure through the riverine fish these communities consume. To quantify how the magnitude of these risks change according to location and time, we measured total mercury (HgT) in fish at sites downstream and upstream of...
Authors
Arioene Vreedzaam, Paul Ouboter, Ashna D. Hindori-Mohangoo, Ryan F. Lepak, Samantha L. Rumschlag, Sarah E. Janssen, Gwen Landburg, Arti Shankar, Wilco Zijlmans, Maureen Y. Lichtveld, Jeffrey K. Wickliffe
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 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
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 particular, models allow...
Authors
Laurel E. Stratton Garvin, Norman L. Buccola, Stewart A. Rounds
A nitrifier-enriched microbial community contributes to the degradation of environmental DNA A nitrifier-enriched microbial community contributes to the degradation of environmental DNA
Environmental DNA (eDNA) surveys are a promising alternative to traditional monitoring of invasive species, rare species, and biodiversity. Detecting organism-specific eDNA reduces the need to collect physical specimens for population estimates, and the high sensitivity of eDNA assays may improve detection of rare or cryptic species. However, correlating estimated concentrations of eDNA...
Authors
Rachelle Elaine Beattie, Caren C. Helbing, Jacob J. Imbery, Katy E. Klymus, Jonathan Lopez Duran, Cathy A. Richter, Anita A. Thambirajah, Nathan Thompson, Thea M. Edwards
Proximate factors affecting mortality and maternal abandonment of young free-roaming feral horse foals Proximate factors affecting mortality and maternal abandonment of young free-roaming feral horse foals
The burgeoning population of feral horses in the American west is due to high population growth, resulting from low adult mortality and high foal survival. In two populations of feral horses in western Utah, USA only 15 foals died (5%; mean age
Authors
Sarah R. B. King, Mary J. Cole, Christine Barton, Kathryn A. Schoenecker