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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Mechanisms influencing thermal refuges and territory occupancy by collared pikas during summer and winter Mechanisms influencing thermal refuges and territory occupancy by collared pikas during summer and winter
Collared pikas (Ochotona collaris) are cold adapted alpine lagomorphs of western Canada and Alaska, USA, that are vulnerable to direct and indirect effects of climate change. However, how and to what extent such changes influence persistence for this species is not well understood, particularly at fine spatial scales. Our goal was to evaluate how microclimate and microhabitat...
Authors
Lillian A. Harrison, Katherine S. Christie, Collette Brandt, Matthew Richard Falcy, Sophie L. Gilbert, Janet L. Rachlow
Monitoring Pacific walrus coastal haulouts by satellite to estimate herd abundance and distribution Monitoring Pacific walrus coastal haulouts by satellite to estimate herd abundance and distribution
The Pacific walrus (Odobenus rosmarus divergens) has a single, panmictic stock that ranges across the Bering and Chukchi Seas. However, its seasonal distribution is incompletely described, particularly in autumn when herds gather on shore, and abundance is of interest to management entities. We monitored walrus herds using satellite imagery on shore across their summer and autumn range...
Authors
Anthony S. Fischbach, Rebecca L. Taylor, David C. Douglas
Late Pleistocene kinematics of the Great Southern Puerto Rico Fault Zone, Puerto Rico Late Pleistocene kinematics of the Great Southern Puerto Rico Fault Zone, Puerto Rico
Several onshore faults in southern Puerto Rico have recently been recognized as Quaternary active. However, the kinematics of these faults, particularly any lateral component, remain largely unconstrained. It is difficult to characterize low strain‐rate faults, partially due to extensive erosional and anthropogenic landscape modification, steep relief, and frequent landsliding, limiting...
Authors
Emerson Madelyn Lynch, Jessica Ann Thompson Jobe, Richard W. Briggs, M. Morow Tan, Victor Ortega Díaz, K. Stephen Hughes
Statistical streamflow comparison of current and historical 30-year periods for selected streams in New Jersey Statistical streamflow comparison of current and historical 30-year periods for selected streams in New Jersey
As the population of New Jersey increases, supplying adequate drinking water to meet demand remains a high priority. To better understand potential streamflow trends over time, the U.S. Geological Survey completed a study comparing low flows at continuous- and partial-record streamgages in New Jersey between a historical period (1950–79) and a current period (1990–2019). Fourteen...
Authors
Brianna Williams, Samantha L. Sullivan, Thomas P. Suro, Jerilyn V. Collenburg, Amy R. McHugh, Jennifer L. Shourds
Treading water: How 6PPD-quinone makes it to our local water bodies & what it means for sensitive fish species Treading water: How 6PPD-quinone makes it to our local water bodies & what it means for sensitive fish species
No abstract available.
Authors
Rachael F. Lane, Justin Blaine Greer, Stephanie E. Gordon, Brianna Williams, Kelly Smalling
Earthquake magnitude and source parameter estimation with a distributed acoustic sensing dataset in the Gorda subduction zone Earthquake magnitude and source parameter estimation with a distributed acoustic sensing dataset in the Gorda subduction zone
Distributed acoustic sensing (DAS) systems offer a cost‐effective way to create large‐scale strainmeter arrays for seismological applications using fiber‐optic cables. DAS‐based strain measurements are known to be influenced by various factors, bringing into question their general reliability for accurate earthquake characterization. A 15‐km‐long DAS deployment in northern California was
Authors
Andrew J. Barbour, Jeffrey J. McGuire, Martin Karrenbach, Robert McPherson, Mark Hemphill-Haley, Connie Stewart
Fitness consequences of catastrophic wildfire are mitigated by behavioral responses of an iconic bird Fitness consequences of catastrophic wildfire are mitigated by behavioral responses of an iconic bird
Background Drought, human disturbance, and invasive species are reshaping disturbance regimes and increasing the scale, severity, and frequency of wildfire in many ecosystems around the globe, including the sagebrush steppe of western North America. Recent studies suggested greater sage-grouse (Centrocercus urophasianus) adhere to strong site fidelity in the aftermath of wildfire...
Authors
Bryan S. Stevens, Courtney J. Conway, Shane B. Roberts, Devin K. Englestead
Spatiotemporal overlap of mallards with poultry farms is associated with greater risk of avian influenza wild bird spillover events Spatiotemporal overlap of mallards with poultry farms is associated with greater risk of avian influenza wild bird spillover events
Animal movement influences local transmission and geographic spread of pathogens. Waterfowl are known reservoirs of pathogens, including H5 goose/Guangdong lineage (H5 GsGd) highly pathogenic avian influenza (HPAI). This HPAI virus lineage causes high rates of morbidity and mortality in domestic poultry and many wild bird species. Mallards (Anas platyrhynchos) are a generalist waterfowl...
Authors
Joshua Alexander Cullen, Nicholas M. Masto, Jeffery D. Sullivan, Cory Highway, Kelly A. Patyk, Mary-Jane McCool, Mia Kim Torchetti, Kristina Lantz, Rebecca L. Poulson, Deborah Carter, Jamie Feddersen, Bradley S. Cohen, Diann J. Prosser
Update to a management-focused population viability analysis for North Atlantic right whales Update to a management-focused population viability analysis for North Atlantic right whales
We provide an update to the recently published population viability analysis for North Atlantic right whales (Eubalaena glacialis). The update includes improvements to the reproduction modeling and also shares additional context given evidence of reduced mortality indicated by recent population monitoring. Projections from the analysis are used to quantify simulated population sizes...
Authors
Daniel Linden, Michael Runge, J. A. Hostetler, Diane Borggaard, Lance Garrison, Amy R. Knowlton, Véronique Lesage, Robert A. Williams, Richard Pace III
Combining scanning electron microscopy, X-ray diffraction, and X-ray fluorescence to characterize shear zones at the Pogo gold deposit, Alaska Combining scanning electron microscopy, X-ray diffraction, and X-ray fluorescence to characterize shear zones at the Pogo gold deposit, Alaska
This study employs a multi-method analytical approach to characterize the mineralogical, geochemical, and textural properties of fault rocks from the Pogo gold mine in the Yukon-Tanana Upland, central Alaska. Specifically, we examine cataclasites, to document the structural and geochemical evolution of shear zones and their associations with gold mineralization. To investigate the shear...
Authors
Katharina I. Pfaff, Filip Kasprowicz, Jonathan Saul Caine, William Benzel, Heather A. Lowers
One hundred ninety-nine dead birds: Review of the scientific basis of ecological incident reporting requirements for pesticide registrants under Fifra § 6(A)(2) One hundred ninety-nine dead birds: Review of the scientific basis of ecological incident reporting requirements for pesticide registrants under Fifra § 6(A)(2)
The U.S. Environmental Protection Agency (EPA) regulates pesticide use in the United States. The EPA is charged by the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) with ensuring that a pesticide will not cause unreasonable adverse effects on the environment. Incident reports (documentation of exposure and injury from pesticide applications) can serve as a reality check on...
Authors
Nimish B. Vyas, Cynthia Palmer
INMS guidance document on nitrogen impact assessment methods INMS guidance document on nitrogen impact assessment methods
This document provides guidance for assessing nitrogen (N) impacts on the environment and humans at all scales from local to regional to global and was compiled with input from scientists worldwide.
Authors
Hideaki Shibata, Jill Baron, Allison Leach, Daniel Liptzin, Azusa Oita, Timothy Weinmann, Tapan Adhya, Icarus Allen, Rocío Alonso, Yuri Artioli, W. Troy Baisden, Bill Bealey, Victoria Bermejo, Jorn Bruggeman, Tom Bruulsema, Juergen Burkhardt, Christopher Clark, Jana E. Compton, Tommy Dalgaard, Wim de Vries, Elizabeth Dukes, Sadeo Eguchi, Jan Willem Erisman, James Galloway, Mekonnen Hailemariam Giweta, I. Gonzalez-Fernandez, Hans van Grinsven, Peter M. Groffman, Baojing Gu, Steven Hall, Kentaro Hayashi , Erik Hobbie, Jason Holt, Laurence Jones, Kiwami Katagiri, Luis Lassaletta, Xia Liang, Erik Lilleskov, Cargele Masso, Kazuyo Matsubae, Miguel Quemada, Mohammad Riaz, Bret Schichtel, Junko Shindo, Ming-Chien Su, Pamela Templer, Johan Tidblad, Alicia Zheng