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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Landscape associations and population genetics of a generalist carnivore at a range limit Landscape associations and population genetics of a generalist carnivore at a range limit
American black bear (Ursus americanus) sightings have increased in the Oklahoma Panhandle, an area outside of the species’ historical range, prompting an assessment of bears in the region. We used camera traps and an occupancy modeling framework to identify factors influencing bear detection and space-use patterns. We used noninvasive genetic sampling techniques to evaluate genetic...
Authors
Bailey A. Kleeberg, Robert Charles Lonsinger, Jennifer R. Adams, Lisette P. Waits, W. Sue Fairbanks
Diurnal patterns of nitrous oxide fluxes from a seasonal prairie wetland Diurnal patterns of nitrous oxide fluxes from a seasonal prairie wetland
Wetlands have spatially and temporally dynamic nitrous oxide (N2O) fluxes. Understanding diurnal patterns in N2O fluxes in wetlands can reveal short-term drivers and improve process-based models. An automated chamber system was used to determine N2O flux rates every 2.5 to 4 h in a prairie pothole wetland in North Dakota during the 2013 to 2014 growing seasons under ponded, moist, and...
Authors
Derek R. Faust, Brian Tangen, Sheel Bansal
Extreme plate boundary localization promotes shallow earthquake slip at the Japan Trench Extreme plate boundary localization promotes shallow earthquake slip at the Japan Trench
The 2011 Mw9.1 Tohoku-oki earthquake is exceptional among great earthquakes for having peak slip of ~50-70 m on the shallowest portion of the plate boundary megathrust. International Ocean Discovery Program Expedition 405 drilled multiple holes through the megathrust in the large slip region and at a Pacific Plate input site. The megathrust preferentially develops at the top or base of...
Authors
Jamie D. Kirkpatrick, Heather M. Savage, Christine Regalla, Srisharan Shreedharan, Catherine Ross, Hanaya Okuda, Uisdean Nicholson, Kohtaro Ujiie, Ron Hackney, Marianne Conin, Pei Pei, Sara Satolli, Junli Zhang, Patrick Fulton, Matt Ikari, Shuichi Kodaira, Lena Maeda, Natsumi Okutsu, Sean Toczko, Nobu Eguchi
A comprehensive geologic framework of the National Crustal Model for seismic hazard studies in the conterminous United States A comprehensive geologic framework of the National Crustal Model for seismic hazard studies in the conterminous United States
A three-dimensional (3D) geologic framework has been developed for the conterminous United States (U.S.) as part of the U.S. Geological Survey National Crustal Model to enhance seismic hazard modeling. The geologic framework is created from geologic maps and multiple subsurface geologic unit boundaries including the base of the Miocene, Cenozoic, Phanerozoic, and the Mohorovičić...
Authors
Oliver S. Boyd, Donald S. Sweetkind
Shallow geologic framework of the Mississippi Sound and the potential for sediment resources Shallow geologic framework of the Mississippi Sound and the potential for sediment resources
The Mississippi Sound, an estuarine environment located between the mainland and barrier islands bordering the northern Gulf of America (formerly the Gulf of Mexico), serves as a vital ecosystem for the States of Mississippi and Alabama. Spanning approximately 100 kilometers from east to west and covering 1,400 square kilometers, the sound is home to marine industry and ports, and its...
Authors
James Flocks, Arnell Forde
Conserving climate-change refugia: Insights from research and practice Conserving climate-change refugia: Insights from research and practice
As the impacts of anthropogenic climate change increase, conservation of climate-change refugia has become a key strategy for effective environmental stewardship. Over the last 5 years, the field of climate-change refugia conservation has made exciting advances, shifting from concepts and theory to refugia mapping and implementation. However, few studies have advanced to action on the...
Authors
Toni Lyn Morelli, Tina G. Mozelewski, Cybil Nicole Cavalieri, Andrew J Caven, Lindsay M. Dreiss, Rachel A. Hovel, Melissa Hua, Megan K. Jennings, Aji John, Gregory Kehm, Gunnar Keppel, Meg A. Krawchuk, Stephen F. Langdon, Joshua J. Lawler, Lauren Lyon, Garrett W. Meigs, Melissa Mora-Gonzalez, Christopher P. Nadeau, Sandra Slowinska, Jessica Stolar, James H. Thorne, Jordon C. Tourville, Benjamin Zuckerberg, Diana Stralberg
Integrating refugia modeling and decision science to support climate-adaptive conservation in the Sierra Nevada Integrating refugia modeling and decision science to support climate-adaptive conservation in the Sierra Nevada
To reduce detrimental impacts of anthropogenic change, natural resource managers often look for place-based solutions to minimize biodiversity loss. Climate-change refugia, areas buffered from contemporary climate change, can enable the persistence of valued natural resources and prolong the benefits of conservation action. Here we combine climate-change refugia modeling with structured...
Authors
Tina G Mozelewski, Claudia Mengelt, Katherine Powelson, Nicole Athearn, Robert L. Grasso, Andrea J Adams, Toni Lyn Morelli
SiMPL wildlife magnets: A camera trap tool for detecting all creatures great and small SiMPL wildlife magnets: A camera trap tool for detecting all creatures great and small
We created the SiMPL wildlife magnet—a baited camera trap design that allows passive monitoring of wildlife, particularly small- to medium-sized mammals. The SiMPL wildlife magnet is inexpensive and easy to construct. To evaluate its effectiveness, we conducted a two-year case study using 9 camera stations along an elevation gradient in the White Mountains of the northeastern United...
Authors
Jahiya Clark, A. P.K. Siren, J. Loesberg, Toni Lyn Morelli
Climate change refugia hotspots for priority species: A case study in East Africa Climate change refugia hotspots for priority species: A case study in East Africa
Natural resource managers and policymakers need actionable climate data to guide conservation decisions. Conserving climate change refugia, areas relatively buffered from contemporary climate change, is increasingly considered an effective strategy for adaptation. Despite tropical species facing heightened vulnerability to climate change, the tropics remain underserved in climate...
Authors
Cavalieri C. N., Devolent Tomas Mtui, Alex L. Lobora, Toni Lyn Morelli
From models to management: Implementing the climate-change refugia conservation cycle in national parks of the northeastern United States From models to management: Implementing the climate-change refugia conservation cycle in national parks of the northeastern United States
Managing climate-change refugia is a commonly recommended strategy for conserving biodiversity. However, few efforts have moved beyond the modeling phase of refugia science to management. Here, we present two case studies that move beyond modeling to testing models and management. In the first case study, we model refugia for two plant species (three-toothed cinquefoil [Sibbaldia...
Authors
Christopher P. Nadeau, Jennifer R. Smetzer, Sara Wisner, Kyle Lima, A. Randall Hughes, Abraham J. Miller-Rushing, Jesse S. Wheeler, Toni Lyn Morelli, Tina G Mozelewski
Environmental characterization of Blue Mesa Reservoir and potential causes of and management strategies for harmful algal blooms, 1970 through 2023, Curecanti National Recreation Area, Colorado Environmental characterization of Blue Mesa Reservoir and potential causes of and management strategies for harmful algal blooms, 1970 through 2023, Curecanti National Recreation Area, Colorado
Blue Mesa Reservoir, in the Curecanti National Recreation Area, is the largest storage reservoir in Colorado and consists of three distinct basins: Iola (the shallowest), Cebolla, and Sapinero. After algal toxins were first documented in Iola basin in 2018, the U.S. Geological Survey began a study in cooperation with the National Park Service, Colorado River Water Conservation District...
Authors
Katherine Walton-Day, Natalie K. Day, M. Alisa Mast, Rachel G. Gidley, Evan J. Gohring, Tyler King, Warren C. Day, Nicole D. Gibney, Nancy J. Bauch
Assessment of undiscovered oil and gas resources in the Haynesville Formation within the onshore United States and State waters of the Gulf Coast Basin, 2024 Assessment of undiscovered oil and gas resources in the Haynesville Formation within the onshore United States and State waters of the Gulf Coast Basin, 2024
Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean resources of 152 million barrels of oil and 47.9 trillion cubic feet of gas in reservoirs of the Haynesville Formation within the onshore United States and State waters of the Gulf Coast Basin.
Authors
Rand Gardner, Jason A. Flaum, Justin E. Birdwell, Scott A. Kinney, Janet K. Pitman, Stanley T. Paxton, Katherine L. French, Tracey J. Mercier, Heidi M. Leathers-Miller, Christopher J. Schenk