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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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Availability of lesser prairie-chicken nesting habitat impairs restoration success Availability of lesser prairie-chicken nesting habitat impairs restoration success
Regional populations of lesser prairie-chickens (Tympanuchus pallidicinctus) have been declining irregularly since the early 1900s (Jensen et al. 2000). Populations in the Sand Sagebrush Prairie Ecoregion of Kansas and Colorado, USA, have been experiencing declines during the last 2 decades. Ecoregion-wide declines included the Cimarron and Comanche National Grasslands in southwestern...
Authors
Liam A. Berigan, Carly S. H. Aulicky, Elisabeth C. Teige, Daniel S. Sullins, David A. Haukos, Kent A. Fricke, Jonathan H. Reitz, Liza G. Rossi, Kraig A. Schultz, Andrew Ricketts
Adapting to climate change on desert rangelands: A multi-site comparison of grazing behavior plasticity of heritage and improved beef cattle Adapting to climate change on desert rangelands: A multi-site comparison of grazing behavior plasticity of heritage and improved beef cattle
Climate change is amplifying the spatiotemporal heterogeneity of desert rangeland forages through its impact on precipitation variability. Foraging behavior plasticity (an animal's ability to alter its behavior to cope with environmental variation) could be a key trait for climate adaptation of beef cattle in arid environments. We analyzed GPS-derived movement and activity data of...
Authors
Andres F. Cibils, Rick E. Estell, Sheri Spiegal, Shelemia Nyamuryekung’e, Matthew M. McIntosh, Danielle M. Duni, Herrera Conegliano, Felipe A. Rodriguez Almeida, Octavio Roacho Estrada, Lisandro J. Blanco, Michael C. Duniway, Santiago A. Utsumi, Alfredo L. Gonzalez
Unified methods in collecting, preserving, and archiving coral bleaching and restoration specimens to increase sample utility and interdisciplinary collaboration Unified methods in collecting, preserving, and archiving coral bleaching and restoration specimens to increase sample utility and interdisciplinary collaboration
Coral reefs are declining worldwide primarily because of bleaching and subsequent mortality resulting from thermal stress. Currently, extensive efforts to engage in more holistic research and restoration endeavors have considerably expanded the techniques applied to examine coral samples. Despite such advances, coral bleaching and restoration studies are often conducted within a specific
Authors
R. Vega Thurber, E R Schmeltzer, A G Grottoli, R. van Woesik, R. J. Toonen, M E Warner, K L Dobson, R H McLachlan, K. L. Barott, D J Barshis, J H Baumann, L Chapron, D. J. Combosch, A. M.S. Correa, T M DeCarlo, M Hagedorn, Laetitia Hedouin, K D Hoadley, T Felis, C. Ferrier-Pages, C D Kenkel, Ilsa B. Kuffner, J L Matthews, Miguel Medina, C P Meyer, C Oster, J T Price, H M Putnam, Y Sawall
Contemporary (1984–2020) fire history metrics for the conterminous United States and ecoregional differences by land ownership Contemporary (1984–2020) fire history metrics for the conterminous United States and ecoregional differences by land ownership
Background: Remotely sensed burned area products are critical to support fire modelling, policy, and management but often require further processing before use. Aim: We calculated fire history metrics from the Landsat Burned Area Product (1984–2020) across the conterminous U.S. (CONUS) including (1) fire frequency, (2) time since last burn (TSLB), (3) year of last burn, (4) longest fire...
Authors
Melanie K. Vanderhoof, Todd Hawbaker, Casey Teske, Joe Noble, Jim Smith
Affinity of the benthic foraminifer Cassidulinoides parkeriana (Brady) for whale-falls: Evidence from off western Vancouver Island, British Columbia, Canada Affinity of the benthic foraminifer Cassidulinoides parkeriana (Brady) for whale-falls: Evidence from off western Vancouver Island, British Columbia, Canada
A partial skeleton of a blue or fin whale, estimated to have been 16.5 m in length and thought to have been lying on the seafloor for less than 10 years, was observed at a depth of 1288 m off western Vancouver Island, British Columbia, Canada (48.68° N, 126.84° W). Four push cores were taken at the site, three (15-26 cm in length) directly under caudal vertebrae and one 18 cm long...
Authors
Mary McGann, Charles K. Paull
Evaluation of host fishes for the Brook Floater (Alasmidonta varicosa) from populations in Massachusetts and Maine, USA Evaluation of host fishes for the Brook Floater (Alasmidonta varicosa) from populations in Massachusetts and Maine, USA
The Brook Floater (Alasmidonta varicosa) mussel is globally vulnerable and has disappeared from much of its historical range. Information on Brook Floater host fish use is needed for ecological and conservation purposes, but previous laboratory studies provide conflicting results. We evaluated host fish use by Brook Floater from populations in Massachusetts and Maine, USA. We conducted...
Authors
Ayla J. Skorupa, Allison H. Roy, Peter D. Hazelton, David Perkins, Timothy Warren
Conclusion to the special issue on Pollinators of the Great Plains Conclusion to the special issue on Pollinators of the Great Plains
No abstract available.
Authors
Clint R.V. Otto
Introduction to the special issue on pollinators of the Great Plains Introduction to the special issue on pollinators of the Great Plains
No abstract available.
Authors
Clint R.V. Otto
Behavioral responses of native and invasive fishes of the Upper Mississippi River to 100 hp boat motor acoustic stimulus Behavioral responses of native and invasive fishes of the Upper Mississippi River to 100 hp boat motor acoustic stimulus
Acoustic deterrents are currently being considered for deployment at strategic bottlenecks, such as lock and dams of major rivers, to deter upstream movement of invasive carp. Previous studies have demonstrated that bighead and silver carp (Hypophthalmichthys nobilis and H. molitrix, respectively) display negative phonotaxis to playbacks of broadband sound recordings produced from a 100...
Authors
Kelsie A. Murchy, Brooke J Vetter, Marybeth K. Brey, Allen F. Mensinger
Fluids and melts at the magmatic-hydrothermal transition, recorded by unidirectional solidification textures at Saginaw Hill, Arizona, USA Fluids and melts at the magmatic-hydrothermal transition, recorded by unidirectional solidification textures at Saginaw Hill, Arizona, USA
Fluid exsolution and melt evolution at the magmatic-hydrothermal transition are critical processes driving the metal enrichment of porphyry systems. Coeval fluid and melt inclusion assemblages in unidirectional solidification textures (USTs) at Saginaw Hill—a small, porphyry Cu system in southwestern Arizona—record a dynamic and repetitious process of fluid accumulation and release. The...
Authors
Wyatt M. Bain, Pilar Lecumberri-Sanchez, Erin E. Marsh, Matthew Steele-MacInnis
Influence of test method variables on sensitivity of Neocloeon triangulifer to a reference toxicant in short-term, effluent style evaluations Influence of test method variables on sensitivity of Neocloeon triangulifer to a reference toxicant in short-term, effluent style evaluations
Recent literature has demonstrated the sensitivity of mayflies to environmental contaminants. However, to date, there are no methods approved by the US Environmental Protection Agency for using sensitive insects like mayflies in whole-effluent toxicity or receiving water toxicity tests. The parthenogenetic mayfly Neocloeon triangulifer has been shown to be amenable to continuous culture...
Authors
David J. Soucek, Amy Dickinson, Teresa J. Norberg-King
Preface to the focus section on deformation models for the U.S. National Seismic Hazard Model Preface to the focus section on deformation models for the U.S. National Seismic Hazard Model
No abstract available.
Authors
Frederick Pollitz, Alexandra Elise Hatem, Kaj M. Johnson