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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.

Filter Total Items: 175531

Properties of solid bitumen formed during hydrous, anhydrous, and brine pyrolysis of oil shale: Implications for solid bitumen reflectance in source-rock reservoirs Properties of solid bitumen formed during hydrous, anhydrous, and brine pyrolysis of oil shale: Implications for solid bitumen reflectance in source-rock reservoirs

Solid bitumen reflectance (BRo in %) is widely used as a thermal maturity proxy in source-rock reservoirs, yet solid bitumen texture and physical attributes may be affected by varying environmental constraints during its formation, e.g., water saturation, mineral catalysis, or salinity. Herein we investigated the development of solid bitumen properties during artificial maturation using...
Authors
Paul C. Hackley, Justin E. Birdwell, Ryan J. McAleer

Ranking river basins for stream temperature research and monitoring in the contiguous United States Ranking river basins for stream temperature research and monitoring in the contiguous United States

There is a need to prioritize research and data collection in river basins by integrating information from environmental, ecological, and socioeconomic datasets to maintain acceptable water quality for human uses and ecosystem health. Multiple anthropogenic and natural stressors are responsible for driving changes in stream temperatures that can alter ecosystems and degrade water quality...
Authors
Ramon C. Naranjo, Zachary Johnson, Lisa Lucas, Nancy T. Baker, Christopher Green

Optimizing per vessel hour capture efficiency for rare, heterogeneously distributed fishes: Invasive grass carp Ctenopharyngodon idella in the Sandusky River Optimizing per vessel hour capture efficiency for rare, heterogeneously distributed fishes: Invasive grass carp Ctenopharyngodon idella in the Sandusky River

Natural resources management is often concerned with conserving rare-native or controlling rare-invasive fishes. Informing and assessing conservation and control efforts frequently requires information from captures. When little is understood about spatial and temporal fish distributions, captures can be infrequent and costly. If successful management depends on effective management...
Authors
Robert Daniel Hunter, Song S. Qian, Jason L. Fischer, Ryan Brown, Lucas Nathan, John M. Dettmers, James Roberts, Corbin David Hilling, Matthew Ross Acre, Robert L. Mapes, Ryan Young, Christine M. Mayer

New paleomagnetic constraints on the eruption timing, stratigraphy, and post-emplacement deformation of the Picture Gorge Basalt within the Columbia River Basalt Group New paleomagnetic constraints on the eruption timing, stratigraphy, and post-emplacement deformation of the Picture Gorge Basalt within the Columbia River Basalt Group

The Picture Gorge Basalt (PGB) is part of the Miocene Columbia River Basalt Group (CRBG). The PGB, which outcrops in eastern Oregon, is considered coincident in time with the voluminous Grande Ronde Basalt. New radiometric ages have expanded the age‐range of the PGB, suggesting it began erupting prior to the Steens Basalt to its south and continued until after cessation of the Grande...
Authors
Anthony Francis Pivarunas, Margaret Susan Avery, Jonathan T. Hagstrum, Scott E.K. Bennett, Andrew T. Calvert

Predicting invasiveness of freshwater fishes imported into North America: Regional differences in models and outcomes Predicting invasiveness of freshwater fishes imported into North America: Regional differences in models and outcomes

Biological invasions driven by international trade heighten the urgency for development of invasion risk models, as the traits and parameters that consistently predict successful invasion remain unresolved. For four regions of North America that include parts of the United States and Canada (Sacramento-San Joaquin River Basins, Lower Colorado River Basin, Great Lakes Region, Mid-Atlantic...
Authors
Jennifer G. Howeth, Sarah A. Amjad, Crysta A. Gantz, Nicholas E. Mandrak, Paul L. Angermeier, Michael P. Marchetti, Julian D. Olden, David M. Lodge

Predicting bat roosts in bridges using Bayesian Additive Regression Trees Predicting bat roosts in bridges using Bayesian Additive Regression Trees

Human-built structures can provide important habitat for wildlife, but predicting which structures are most likely to be used remains challenging. To evaluate the predictive capabilities of data-driven ensemble modeling approaches, we conducted surveys for bats and signs of bat use, such as urine and guano staining, at bridges across the southwestern United States. We developed a bat...
Authors
Jacob Oram, Amy Kristine Wray, Helen Trice Davis, Luz A. de Wit, Winifred F. Frick, Andrew B. Hoegh, Kathryn M. Irvine, Patrick Pollock, Andrea Nichole Schuhmann, Frank Charles Tousley, Brian E. Reichert
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