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The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
Browse more than 65,000 articles authored by our scientists over the past 100+ year history of the USGS and refine search by topic, location, year, and advanced search.
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Tourism-supported working lands sustain a growing jaguar population in the Colombian Llanos Tourism-supported working lands sustain a growing jaguar population in the Colombian Llanos
Understanding large carnivore demography on human-dominated lands is a priority to inform conservation strategies, yet few studies examine long-term trends. Jaguars (Panthera onca) are one such species whose population trends and survival rates remain unknown across working lands. We integrated nine years of camera trap data and tourist photos to estimate jaguar density, survival...
Authors
Matthew Hyde, Esteban Payan, Jorge Barragan, Diana Stasiukynas, William L. Kendall, Samantha Rincon, Jeronimo Rodriguez, Kevin R. Crooks, Stewart W. Breck, Valeria Boron
Open water dreissenid mussel control projects: Lessons learned from a retrospective analysis Open water dreissenid mussel control projects: Lessons learned from a retrospective analysis
Dreissenid mussels are one of the most problematic aquatic invasive species (AIS) in North America, causing substantial ecological and economic effects. To date, dreissenid mussel control efforts in open water have included physical, biological, and chemical methods. The feasibility of successful dreissenid mussel management or eradication in lakes is relatively undocumented in the...
Authors
Angelique D. Dahlberg, Diane L. Waller, David Hammond, Keegan Lund, Nicholas B. D. Phelps
Editorial: Micro-to nano-analytical challenges towards trace element characterization of ore minerals: New perspectives and applications for sustainable georesources Editorial: Micro-to nano-analytical challenges towards trace element characterization of ore minerals: New perspectives and applications for sustainable georesources
No abstract available.
Authors
Manuel Keith, Sarah M. Hayes, C. L. Ciobanu, D. Fougerouse, M. Reich
Modeling surface wave dynamics in upper Delaware Bay with living shorelines Modeling surface wave dynamics in upper Delaware Bay with living shorelines
Living shorelines gain increasing attention because they stabilize shorelines and reduce erosion. This study leverages physics-based models and bagged regression tree (BRT) machine learning algorithm to simulate wave dynamics at a living shoreline composed of constructed oyster reefs (CORs) in upper Delaware Bay. The physics-based models consist of coupled Delft3D-FLOW and SWAN in four...
Authors
Ling Zhu, Q. Chen, Hongqing Wang, Nan Wang, Kelin Hu, William D. Capurso, Lukasz M. Niemoczynski, Gregg A. Snedden
Assessment of public and private land cover change in the United States from 1985–2018 Assessment of public and private land cover change in the United States from 1985–2018
An assessment of annual land cover on publicly and privately managed lands across the conterminous United States (CONUS) from 1985–2018 was performed, including land cover conversions within their management category, to inform future policy and land-use decision-making in natural resource management. Synthesizing land cover data with land management delineations aids our ability to...
Authors
Nathan C. Healey, Janis L. Taylor, Roger F. Auch
Development and application of an Infragravity Wave (InWave) driver to simulate nearshore processes Development and application of an Infragravity Wave (InWave) driver to simulate nearshore processes
Infragravity waves are key components of the hydro-sedimentary processes in coastal areas, especially during extreme storms. Accurate modeling of coastal erosion and breaching requires consideration of the effects of infragravity waves. Here, we present InWave, a new infragravity wave driver of the Coupled Ocean-Atmopshere-Waves-Sediment Transport (COAWST) modeling system. InWave...
Authors
Maitane Olabarrieta, John C. Warner, Christie Hegermiller
Modeling the maturation history of the stacked petroleum systems of the Williston Basin, USA Modeling the maturation history of the stacked petroleum systems of the Williston Basin, USA
A three-dimensional petroleum systems model was built to support U.S. Geological Survey assessments of undiscovered oil and gas resources in the Williston Basin of North Dakota, Montana, and South Dakota. Numerous Paleozoic source rocks have been proven or postulated in the basin, of which five were the focus of maturation and migration modeling: the Ordovician Icebox Formation, the...
Authors
Sarah E. Gelman
Accuracy and precision of sea-finding orientation as a function of dune proximity in hatchlings of two species of sea turtles Accuracy and precision of sea-finding orientation as a function of dune proximity in hatchlings of two species of sea turtles
Context: Sea turtle hatchlings generally emerge at night from nests on sand beaches and immediately orient using visual cues, which are believed to entail the difference in brightness between the light seen in the seaward direction and that seen in the duneward direction. Aim: The aim of this study was to understand how dune proximity affected hatchling orientations in two sea turtle...
Authors
Shigetomo Hirama, Blair Witherington, Andrea Sylvia, Raymond Carthy
Connecting dryland fine-fuel assessments to wildfire exposure and natural resource values at risk Connecting dryland fine-fuel assessments to wildfire exposure and natural resource values at risk
Background
Authors
Adam Gerhard Wells, Seth M. Munson, Miguel L. Villarreal, Steven E. Sesnie, Katherine M. Laushman
Community cloud computing infrastructure to support equitable water research and education Community cloud computing infrastructure to support equitable water research and education
No abstract available.
Authors
Anthony M. Castronova, Ayman Nassar, Wouter Knoben, Michael N. Fienen, Louise Arnal, Martyn Clark
Chemical characteristics of wildfire ash across the globe and their environmental and socio-economic implications Chemical characteristics of wildfire ash across the globe and their environmental and socio-economic implications
The mobilisation of potentially harmful chemical constituents in wildfire ash can be a major consequence of wildfires, posing widespread societal risks. Knowledge of wildfire ash chemical composition is crucial to anticipate and mitigate these risks. Here we present a comprehensive dataset on the chemical characteristics of a wide range of wildfire ashes (42 types and a total of 148...
Authors
Carmen Sanchez-Garcia, Cristina Santín, Jonay Neris, Gabriel Sigmund, Xose Lois Otero, Joella Manley, Gil Gonzalez-Rodriguez, Claire Belcher, Artemi Cerdá, Abbey L Marcotte, Sheila F. Murphy, Charles Rhoades, Gary J. Sheridan, Tercia Strydom, Peter R. Robichaud, Stefan H. Doerr