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A roadmap for implementing the Emergency Recovery Plan for freshwater biodiversity A roadmap for implementing the Emergency Recovery Plan for freshwater biodiversity
No abstract available.
Authors
Steve J. Cooke, Abigail J. Lynch, David Tickner, Robin Abell, Morgan L. Piczak, Angela H. Arthington, Michele Thieme, Denielle M. Perry, J. Robert Britton, Tatenda Dalu, Kim Birnie-Gauvin, Steve J. Ormerod, Fernanda Ayaviri Matuk, Rajeev Raghavan, John P. Smol
Comparative assessment of STIC sensors, streamflow and rain gauges for quantifying river connectivity in intermittent systems Comparative assessment of STIC sensors, streamflow and rain gauges for quantifying river connectivity in intermittent systems
In intermittent stream systems, including those occurring in Texas, USA, the severity of low-flow conditions, duration of seasonal disconnection, and frequency of no-flow events have been amplified by drought. Documentation of these no-flow events is necessary to evaluate ecosystem health. However, many intermittent reaches remain un-gauged given that perennial river sec-tions are often
Authors
Cienna R. Cooper, Jane S. Rogosch, Nathan G. Smith, Clinton R. Robertson, Wade M. Wilson
Late Miocene Colorado River arrival in the Bidahochi basin supports spillover origin of Grand Canyon Late Miocene Colorado River arrival in the Bidahochi basin supports spillover origin of Grand Canyon
The timing and mechanism of the integration of the Colorado River and incision of the Grand Canyon remain among geology’s enduring controversies. A key question is the configuration of the upper Colorado River watershed between 11 and 6 million years ago. In this study, we present new evidence from zircon uranium-lead geochronology for the arrival of distinctive Colorado–Green River...
Authors
John J.Y. He, Ryan S. Crow, John R. Douglass, Christopher S. Holm-Denoma, Jorge A. Vazquez, Brian F. Gootee, Marsha I Lidzbarski, Laura Pianowski, Harrison J. Gray, Emma Heitmann, Phil Pearthree, Kyle House, Shannon Dulin
Size of modern megafire not unprecedented and a cumulative fire deficit persists Size of modern megafire not unprecedented and a cumulative fire deficit persists
Background
Authors
C. H. Guiterman, Ellis Q. Margolis, D. W. Huffman, M. K. Lonergan, M. Kaib, C. H. Baisan
Logical data model for hydrographic data based on HY_Features concepts Logical data model for hydrographic data based on HY_Features concepts
This report describes background and design of the “hydrofabric data model” which defines logic for implementation of data schemas and software that deals with hydrologic geospatial data. As a “logical” data model, the hydrofabric data model specifies details necessary to support compatibility of data and software that satisfy diverse needs without unnecessarily restricting...
The damability function: A probabilistic approach to regional landslide dam susceptibility analysis applied to the Oregon Coast Range, USA The damability function: A probabilistic approach to regional landslide dam susceptibility analysis applied to the Oregon Coast Range, USA
Landslides can dam rivers and require rapid response to mitigate catastrophic outburst floods. Here, we present a workflow to map landslide dam formation susceptibility at a regional scale. We define a probabilistic function that combines river valley width and landslide volume to efficiently determine the likelihood of a landslide dam or “damability”. We combine damability values with...
Authors
Paul M Morgan, Alex R. Grant, William Struble, Sean Richard LaHusen, Alison R. Duvall
Ground-motion characterization for the 2025 U.S. National Seismic Hazard Model for Puerto Rico and the U.S. Virgin Islands Ground-motion characterization for the 2025 U.S. National Seismic Hazard Model for Puerto Rico and the U.S. Virgin Islands
We develop the ground-motion characterization (GMC) for the 2025 U.S. National Seismic Hazard Model for Puerto Rico and the U.S. Virgin Islands (NSHM-PRVI) for earthquakes in active crustal, subduction interface, and subduction intraslab regimes. Using ground-motion models (GMMs) from the Next-Generation Attenuation (NGA)-West2 and NGA-Subduction projects, the GMC is parameterized by...
Authors
Morgan P. Moschetti, Brad T. Aagaard, Kyle B. Withers, Kevin Ross Milner, Jason M. Altekruse, Julie A. Herrick, Peter M. Powers, Sanaz Rezaeian, Allison M. Shumway, William J. Stephenson
Characterizing changes in postfire debris-flow hazard as burned areas recover Characterizing changes in postfire debris-flow hazard as burned areas recover
Emergency assessments of postfire debris-flow hazards that are performed by the U.S. Geological Survey (USGS) provide estimates of debris-flow likelihood and rainfall triggering conditions that are used for evaluating and managing runoff-generated debris-flow hazards in recently burned areas throughout the western United States. Although the immediate postfire period, within roughly one...
Authors
Andrew Paul Graber, Matthew A. Thomas, Jason W. Kean, Jonathan Michael King, Jaime Kostelnik
Analyses of meteorological and hydrological records support Tribal members’ accounts of changing climate on the Fort Apache Reservation, east–central Arizona Analyses of meteorological and hydrological records support Tribal members’ accounts of changing climate on the Fort Apache Reservation, east–central Arizona
The Fort Apache Reservation in east–central Arizona, home to the White Mountain Apache Tribe of the Fort Apache Reservation, Arizona, contains several climate zones because of the large variation in surface elevation within the reservation. This study was carried out in cooperation with the White Mountain Apache Tribe of the Fort Apache Reservation, Arizona, to raise awareness of how the...
Authors
Jon P. Mason
Poor population recovery of Lake Washington Chinook Salmon (Oncorhynchus tshawytscha) in Pacific Northwestern USA may be associated with disease caused by Ceratonova shasta in an urban-influenced watershed Poor population recovery of Lake Washington Chinook Salmon (Oncorhynchus tshawytscha) in Pacific Northwestern USA may be associated with disease caused by Ceratonova shasta in an urban-influenced watershed
Understanding the effects of anthropogenic changes on fish disease is vital for supporting mitigative actions for fisheries population recovery. The Lake Washington watershed in the Pacific Northwestern United States is influenced by high urban development and climate change, compromising the sustainability of anadromous salmon. We investigated Ceratonova shasta, a myxozoan parasite, in...
Authors
Jan Lovy, Sophie Amanda Hall, Carl O. Ostberg, Justin Blaine Greer, Dorothy M. Chase, Genevieve M. Kent, Timothy J. Kuzan, Carla M. Conway
Rapid expansion of genotype D1.1 A(H5N1) influenza viruses in wild birds across North America during the 2024 migratory season Rapid expansion of genotype D1.1 A(H5N1) influenza viruses in wild birds across North America during the 2024 migratory season
In late 2021, high pathogenicity avian influenza A(H5N1) clade 2.3.4.4b viruses entered North America and reassorted rapidly with local avian influenza viruses. In September 2024, we detected a new reassortant later classified as genotype D1.1. Using active and passive avian influenza surveillance across Canada and the USA, we tracked the emergence and rapid spread of D1.1 viruses in...
Authors
Walter N. Harrington, Anthony Signore, Lisa Kercher, Jolene A. Giacinti, Ahmed Kandeil, Christina A. Ahlstrom, Sarah N. Bevins, Beate Crossley, Tom P. Fabrizio, Trushar Jeevan, Julianna B. Lenoch, Jacqueline M. Nolting, Daniel Rejmanek, David E. Stallknecht, Trent Bollinger, Evan J. Buck, Deborah Carter, Bradley S. Cohen, Krista E. Dilione, Jamie C. Feddersen, John Franks, Dayna Goldsmith, Cory J. Highway, Chelsea Himsworth, Lydia P. Holmes, Claire M. Jardine, Mohammad Jawad Jahid, Paul K. Link, Lance Miller, Nicole M. Nemeth, Madison Owsiany, Margo J. Pybus, Laura C. Scott, Christopher Sharp, Lauren Smith, Nathan J. Steelman, Brian Stevens, Yohannes Berhane, Mia K. Torchetti, Andrew M. Ramey, Rebecca L. Poulson, Richard J. Webby
Cenozoic distributed volcanism of the Arabia Plate—A review Cenozoic distributed volcanism of the Arabia Plate—A review
Cenozoic volcanic rocks of the Arabia Plate cover about 140,000 square kilometers across a distance of about 3,000 kilometers from southern Yemen to southeastern Turkey. The majority of volcanic products are alkali basalts that erupted in restricted areas, commonly over periods of a million or more years, building mafic lava fields, each known in Arabic as a “harrat.” Harrat volcanism...
Authors
Thomas W. Sisson, Andrew T. Calvert