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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Initial condition uncertainty exerts a large and persistent influence on model simulations of ecosystem carbon dynamics in California Initial condition uncertainty exerts a large and persistent influence on model simulations of ecosystem carbon dynamics in California
Uncertainties in terrestrial ecosystem models limit their predictive power. Efforts to reduce projection error have rarely focused on constraining uncertainty in the initial state of the ecosystem, however, despite evidence that matching model initial conditions to real-world observations reduces overall model bias. Here we use an integrated land change and carbon gain-loss model to...
Authors
Paul C. Selmants, Benjamin M. Sleeter, Colin J. Daniel
Inland recreational fisheries harvest far exceeds reported inland harvest in the United States Inland recreational fisheries harvest far exceeds reported inland harvest in the United States
Recreational fisheries are important global contributors to food security, socio-cultural practices, and local and regional economies. However, inland recreational fisheries are often overlooked by policymakers due to a limited understanding of the magnitude of participation, harvest, and economic impact. Here, we used the U.S. Inland Creel and Angler Survey Catalog and catch and effort...
Authors
Matthew D. Robertson, Holly Susan Embke, Abigail J. Lynch, Stephen R. Midway, Craig Paukert
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
Integrating climate and anthropogenic dynamics can inform multifaceted management for declining mule deer populations Integrating climate and anthropogenic dynamics can inform multifaceted management for declining mule deer populations
Wildlife and their habitats face profound challenges from climate and landscape-scale changes that extend beyond the influence and time horizon of most biologists and land managers. In this changing environment, long-term datasets can enhance assessments of how demographic trends respond to interactions among local (e.g., habitat restoration decisions) and broad extent drivers, including...
Authors
Teagan A. Hayes, Aaron N. Johnston, L. Embere Hall, Jill E. Randall, Matthew J. Kauffman, Christopher Keefe, Kevin Monteith, Tabitha A. Graves
Integrating climate data and river modeling to reveal Chinook salmon habitat conditions in subarctic river basins Integrating climate data and river modeling to reveal Chinook salmon habitat conditions in subarctic river basins
Climatic extremes can impact the productivity of aquatic species, affecting ecosystems and fishery-dependent communities. Advances in climate products, such as gridded datasets and downscaled projections, may be useful for quantifying freshwater habitat conditions and predicting climate change effects on fish. However, limited guidance exists for selecting climate products to develop...
Authors
Rebecca Shaftel, Megan L. Feddern, Stephanie A. McAfee, Erik R. Schoen, Curry Cunningham, Vanessa R. von Biela, Josh Paul, Yifan Cheng, Andrew Newman, Margaret Perdue, Jon Schwenk, Al von Finster, Jeffrey A. Falke
Integrating data on a mixed stock anadromous fishery to estimate stock-specific escapement and mortalities Integrating data on a mixed stock anadromous fishery to estimate stock-specific escapement and mortalities
Objective Anadromous fisheries can affect stocks with differing management objectives. Understanding the effects of fisheries on individual stocks by quantifying final dispositions, including escapement and mortalities, is important for sustainable fishery management. Our objectives were to extend an existing management model that is used to evaluate final stock dispositions to estimate...
Authors
Ryan A. Vosbigian, John H. Powell, Matthew Richard Falcy
Integrating detrital magnetite geochemistry and (U-Th)/He chronometry as a sediment provenance tool in geologic and metallogenic terranes Integrating detrital magnetite geochemistry and (U-Th)/He chronometry as a sediment provenance tool in geologic and metallogenic terranes
Magnetite is ubiquitous in porphyry Cu systems and in sediment sourcing both barren and mineralized regions, with potential as an indicator mineral in concealed and coarsely-mapped terranes. We develop and test a workflow for integrated geochemistry and (U–Th)/He (He) dating for inferring detrital magnetite (DMt) provenance in these settings. The ca. 70 Ma Taurus porphyry Cu–Mo(–Au)...
Authors
Robert Gregory McDermott, Douglas C. Kreiner, James V. Jones, Sean P. Regan, James R. Metcalf, Rebecca M. Flowers
Integrating fecal DNA and telemetry to estimate wildlife densities in anthropogenic landscapes Integrating fecal DNA and telemetry to estimate wildlife densities in anthropogenic landscapes
Density estimation is central to wildlife management efforts but can be challenging in anthropogenically-dominated landscapes due to small parcel sizes, access restrictions, and limited green space. Reliable density estimates are especially important for managing white-tailed deer (Odocoileus virginianus), whose high abundance in urbanized areas increases the need for accurate population
Authors
Ashley S. Lynn, Mikiah McGinn, Nathan J. Hostetter, Heather Evans, Christopher E. Moorman, Nils Peterson, John C Kilgo, Elizabeth M. Kierepka
Integrating mark-recapture, catch, and expert habitat assessments to quantify recent increases in humpback chub abundance over a 200 km long river segment of the Colorado River in western Grand Canyon Integrating mark-recapture, catch, and expert habitat assessments to quantify recent increases in humpback chub abundance over a 200 km long river segment of the Colorado River in western Grand Canyon
Humpback chub, Gila cypha, were historically distributed throughout large portions of the Colorado River basin and were federally listed in 1967. In the Grand Canyon segment of the Colorado River, located below Glen Canyon Dam, chub abundances continued to decline through the early 2000s. Recently, catch has increased substantially, especially in the western Grand Canyon. Here, we...
Authors
Maria C. Dzul, David R. Van Haverbeke, Kirk Young, Charles B. Yackulic, Pilar Rinker, Michael D. Yard
Integrating Sr isotopes, microchemistry, and genetics to reconstruct Salmonidae species and life history Integrating Sr isotopes, microchemistry, and genetics to reconstruct Salmonidae species and life history
Recent approaches to fisheries research emphasize the importance of the coproduction of knowledge in building resilient and culturally mindful fisheries management frameworks. Despite widespread recognition of the need for Indigenous knowledge and historical reference points as baseline data, archaeological data are rarely included in conservation biology research designs. Here we...
Authors
Ross Anthony Salerno, Remi Murdoch, Taylor Wilcox, Joanna Elmore, Jens Hegg, Catherine S Austin, Michael LeMoine, Jade Luckhurst, Alexandra Fraik, Molly Carney
Interacting effects of human presence and landscape modification on birds and mammals Interacting effects of human presence and landscape modification on birds and mammals
Sustainable human–wildlife coexistence requires a mechanistic understanding of the many ways that humans affect animals. However, progress is hampered by the lack of accessible data measuring the dynamic presence of people. Here, we leverage mobile-device data to disentangle how human presence and landscape modification differentially influence the use of geographic and environmental...
Authors
Ruth Y. Oliver, Scott W. Yanco, Diego Ellis-Soto, Brett R. Jesmer, Juliet Cohen, Song Gao, Robert Patchett, Tal Avgar, Keith L. Bildstein, Nicholas W. Bakner, David Barber, Kristin J. Barker, Joseph G. Barnes, Guillaume Bastille-Rousseau, Jerrold L. Belant, John F. Benson, Joel Bety, Dean E. Beyer, David Bird, Nathaniel R. Bowersock, Andy J. Boyce, Ben S. Carlson, Michael L. Casazza, Michael J. Chamberlain, Michael J. Cherry, Bret A. Collier, Alyson Courtemanch, Sarah C. Davidson, Darren DeBloois, Vickie DeNicola, Christopher R. Desorbo, Robert C. Dowler, Daniel Dupont, L. Mark Elbroch, John E. Elliott, Betsy A. Evans, W. Mark Ford, David Hancock, Molly Hardesty-Moore, Jason E. Hawley, Mackenzie R. Jeffress, Scott Jennings, Matthew J. Kauffman, Roland Kays, Marcella J. Kelly, Bryan M. Kluever, Myles Lamont, Scott LaPoint, Tayler N. Lasharr, Josee Lefebvre, Pierre Legagneux, Matthias-Claudio Loretto, David Lumpkin, Lindsay A. Martinez, John M. Marzluff, Douglas J. McCauley, Fiona McDuie, Tony W. Mong, Kevin L. Monteith, Thomas Mueller, Levi Newediuk, Anna C. Ortega, Federico Ossi, Cory T. Overton, J. Clint Perkins, Tyler R. Petroelje, Laura R. Prugh, Kimberly A. Sager-Fradkin, Michael Seer, Avery L. Shawler, Shannon Skalos, Rachel A. Smiley, Julia Sommerfield, Daniel R. Stahler, John A. Stephenson, Richard D. Stevens, Nathan J. Svoboda, Jean-Francois Therrien, Philippe J. Thomas, Meredith C. VanAcker, Eric Vander Wal, Dan E. Varland, Tana L. Verzuh, Brittany L. Wagler, Nils Warnock, Stephen L. Webb, Christopher K. Williams, Christopher C. Wilmers, David W. Wolfson, Julie K. Young, Christian Rutz, Walter Jetz
Interplanetary electric fields for extreme magnetic storms Interplanetary electric fields for extreme magnetic storms
Using a list of sudden-commencement storms, the ring-current index, and 1-h near-Earth solar-wind measurements from solar cycles 20–25, we develop extreme-value statistical models relating storm intensity 𝐷 =max{−𝐷𝑠𝑡} to the storm main-phase maximum duskward interplanetary electric field 𝐸. The conditional relationship 𝐷|𝐸 is demonstrably sublinear—linear models are confidently...
Authors
Jeffrey J. Love, E. Joshua Rigler, Ian G. Richardson, Kalevi Mursula