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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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Decadal shifts in groundwater age detected by environmental tracers across California, USA Decadal shifts in groundwater age detected by environmental tracers across California, USA

Groundwater age offers important insight into recharge, storage, and contamination risk. Although models predict age changes can be driven by pumping and climate variability, direct observational evidence remains limited. Here, we analyzed paired environmental tracer suites (tritium, carbon-14, and tritiogenic helium-3) collected a decade apart from 268 wells across California to assess...
Authors
Bryant C. Jurgens, Zeno F. Levy
By
California Water Science Center

The collective application of shorebird tracking data to conservation The collective application of shorebird tracking data to conservation

Addressing urgent conservation issues, such as the drastic declines of North American migratory birds, requires creative, evidence-based, efficient, and collaborative approaches. The abundance of over 50% of monitored North American shorebird populations has declined by over 50% since 1980. To address these declines, we developed a partnership of scientists and practitioners called the...
Authors
Autumn-Lynn Harrison, Candace Stenzel, Alexandra Anderson, Jessica Howell, Richard B. Lanctot, Marley Aikens, Joaquín Aldabe, Liam A. Berigan, Joël Bêty, Erik Blomberg, Juliana Bosi de Almeida, Andy J. Boyce, David W. Bradley, Stephen C. Brown, Jay D. Carlisle, Edward Cheskey, Katherine Christie, Sylvain Christin, Rob Clay, Ashley A. Dayer, Jill L. Deppe, Willow B. English, Scott A. Flemming, Olivier Gilg, Christine Gilroy, Susan Heath, Jason M. Hill, J. Mark Hipfner, James A. Johnson, Luanne Johnson, Bart Kempenaers, Paul Knaga, Eunbi Kwon, Benjamin J. Lagassé, Jean-François Lamarre, Christopher Latty, Don-Jean Léandri-Breton, Nicolas Lecomte, Pam Loring, Laura Anne McDuffie, Rebecca L McGuire, Scott Moorhead, Juan G. Navedo, David Newstead, Erica Nol, Alina Olalla-Kerstupp, Bridget Olson, Elizabeth Olson, Julie Paquet, Allison K. Pierce, Jennie Rausch, Kevin Regan, Matthew E. Reiter, Amber M. Roth, Mike Russell, Daniel R. Ruthrauff, Sarah T. Saalfeld, Amy L. Scarpignato, Shiloh Schulte, Nathan R. Senner, Joseph A.M. Smith, Paul A. Smith, Zach Spector, Kelly Srigley Werner, Michelle L. Stantial, Audrey R. Taylor, T. Lee Tibbitts, Mihai Valcu, Nils Warnock, Walter Wehtje, Brad Winn, Michael B. Wunder
By
Alaska Science Center

Sources and streambed storage of soft sediment and sediment-bound phosphorus in an agricultural Great Lakes tributary Sources and streambed storage of soft sediment and sediment-bound phosphorus in an agricultural Great Lakes tributary

The East River, an agricultural tributary to the Lower Fox River and Lake Michigan in Wisconsin, USA, has excessive phosphorus (P) and suspended-sediment loads that contribute to downstream eutrophication and habitat-related impairments. Spatial variations and connectivity in the sources and streambed storage of soft, fine-grained (silt and clay) sediment and related sediment-bound P...
Authors
Heidi M. Broerman, James D. Blount, Faith A. Fitzpatrick, Tanja N. Williamson, Rebecca Kreiling, Isaac James Mevis, Matthew J. Komiskey
By
Ecosystems Mission Area, Upper Midwest Environmental Sciences Center, Ohio-Kentucky-Indiana Water Science Center, Upper Midwest Water Science Center

Quantitative microbial risk assessment with microbial source tracking for enteric pathogens in southwest Wisconsin private wells Quantitative microbial risk assessment with microbial source tracking for enteric pathogens in southwest Wisconsin private wells

Private wells supply drinking water for many households, and their contamination by fecal microbes presents a risk of acute gastrointestinal illness (AGI). Risk is thought to vary by contaminating fecal source, but specific associations with fecal source are unknown for most private wells in the United States. This study characterizes AGI risk in Grant, Iowa, and Lafayette counties in...
Authors
Tucker R. Burch, Joel P. Stokdyk, Joe Heffron, Sarah A. Opelt, Aaron D. Firnstahl
By
Upper Midwest Water Science Center, Laboratory for Infectious Disease and the Environment

Net CO2 emissions from dry inland waters persist in the presence of vegetation Net CO2 emissions from dry inland waters persist in the presence of vegetation

Many inland waters are shrinking due to shifts in climate and water diversion for human uses. As they dry out, their exposed sediments emit large amounts of carbon dioxide (CO2) to the atmosphere. However, current global estimates of CO2 emissions from dry inland waters are derived exclusively from bare sediment dark-chamber measurements that do not account for the colonization of...
Authors
K. Sharma, Soren Brothers, S. Bernal, Núria Catalán, P. Keller, M. Koschorreck, S. Kosten, C. Leigh, D. von Schiller, A. Pastor, A. Larrañaga, A. Ari, A. Camacho-Santamans, A. Grinham, A. Lupon, A. Linkhorst, A. Elosegi, B. Obrador, B. D. Eyre, C. Trochine, C. C. Muniz, C. Feijoo, C. Duvert, E. Moreno-Ostos, E. Jacqueline Garcia, E. S. Oliveria, F. Cuassolo, H. R. Fernandez, J. Yeo, J. Oakes, J. R. Paranaíba, J. Pegg, J. Anselmo, J. J. Montes-Perez, L. van den Heuvel, L. Ran, L. L. Wilkinson, L. Gomez-Gener, M. Arroita, M. Shanafield, M. L. Gultemirian, M. I. Arce, M. Cobo, M. M. Sanchez-Montoya, N. Barros, N. Wells, N. Karakaya, P. Erturk Ari, Q. Struik, R. Aben, R. Rimas, S. Kumar, Sheel Bansal, S. Sarkar, S. Rodriguez-Gomez, T. Huang, T. Silverthorn, T. Datry, V. Diaz Villanueva, R. Marce
By
Ecosystems Mission Area, Northern Prairie Wildlife Research Center

Insights into Mountain Pass carbonatite formation from in-situ sulfur isotopes and geochemistry of sulfate and sulfide minerals Insights into Mountain Pass carbonatite formation from in-situ sulfur isotopes and geochemistry of sulfate and sulfide minerals

The Mountain Pass carbonatite stock hosts a world-class rare earth element deposit and may be classified as a carbonate-sulfate igneous rock, as it contains on average > 50 volume percent carbonate minerals and 20 to 30 volume percent sulfate minerals. The sulfates range in composition from barite to celestine and locally occur with sparse sulfide minerals. We investigate the origin of...
Authors
Erin Kay Benson, Kathryn E. Watts, Michael J. Pribil, Jay M. Thompson, Heather A. Lowers
By
Geology, Energy, and Minerals Mission Area, Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center, Geology, Minerals, Energy, and Geophysics Science Center, Denver Microbeam Laboratory
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