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Filter Total Items: 171126

Systematic mapping of the ocean-continent transform plate boundary of the Queen Charlotte fault system, southeastern Alaska and western British Columbia—A preliminary bathymetric terrain model

In 2015, U.S. Geological Survey scientists in collaboration with scientists from other institutions began a study of the Queen Charlotte fault—the first systematic study of the fault in more than three decades. The primary goal of the study was to gain a better understanding of the earthquake, tsunami, and underwater-landslide hazards throughout southeastern Alaska, as well as gather data to devel
Authors
Brian D. Andrews, Daniel S. Brothers, Peter Dartnell, J. Vaughn Barrie, Peter J. Haeussler, Kristen M. Green, H. Gary Greene, Nathaniel C. Miller, Jared W. Kluesner, Uri S. ten Brink

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 Criollo and comm
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

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 disciplin

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

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-free interv
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

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, considered a re
Authors
Mary McGann, Charles K. Paull

Geologic map of the Mount Evans quadrangle, Clear Creek and Park Counties, Colorado

The Mount Evans 7.5’ quadrangle lies in Park and Clear Creek counties, Colorado, about 60 km west of Denver. The highest elevation in the quadrangle is 14,265 ft (4,348 m) at the top of Mount Evans. The lowest is at about 9,200 ft (2,804 m) on Guanella Pass Road at the southern edge of the quadrangle. Bedrock directly underlies most of the map area, with surficial deposits primarily in the valleys
Authors
Logan Powell, Asha A. Mahatma, Yvette Kuiper, Chester A. Ruleman

Coral reef restoration for risk reduction (CR4): A guide to project design and proposal development

The Federal Emergency Management Agency (FEMA), U.S. Geological Survey (USGS), U.S. Army Corps of Engineers (USACE), National Oceanic and Atmospheric Administration (NOAA), and University of California Santa Cruz (UCSC) are working through the U.S. Coral Reef Task Force to provide guidance on the development of coral reef restoration proposals for federal hazard mitigation funding.
Authors
Austen Stovall, Michael W. Beck, Curt Storlazzi, Juliette Hayes, Janan Reilly, Jennifer Koss, Doug Bausch

Movements and habitat use of the Florida manatee (Trichechus manatus latirostris) in the northern Gulf of Mexico

No abstract available.
Authors
Daniel Slone, Susan M. Butler, James P. Reid, Cathy Beck, Robert Bonde

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 hp outboar
Authors
Kelsie A. Murchy, Brooke J Vetter, Marybeth K. Brey, Allen F. Mensinger