Range-wide declines of northern spotted owl populations in the Pacific Northwest: A meta-analysis
Alan B. Franklin, Katie M. Dugger, Damon B. Lesmeister, Raymond J. Davis, J. David Wiens, Gary C. White, James D. Nichols, James E. Hines, Charles B. Yackulic, Carl J. Schwarz, Steven H. Ackers, Andrew L. Stevens, Larissa L. Bailey, Robin Bown, Jesse Burgher, Kenneth P. Burnham, Peter C. Carlson, Tara Chestnut, Mary M Conner, Krista E. Dilione, Eric D. Forsman, Elizabeth M. Glenn, Scott A. Gremel, Keith A. Hamm, Dale R. Herter, J. Mark Higley, Rob B. Horn, Julianna M. Jenkins, William L. Kendall, David W Lamphear, Christopher McCafferty, Trent L. McDonald, Janice A Reid, Jeremy T. Rockweit, David C. Simon, Stan G. Sovern, James Swingle, Heather Wise
2021, Biological Conservation, (259)
The northern spotted owl (Strix occidentalis caurina) inhabits older coniferous forests in the Pacific Northwest and has been at the center of forest management issues in this region. The immediate threats to this federally listed species include habitat loss and competition with barred owls (Strix...
Sources of volcanic tremor associated with the summit caldera collapse during the 2018 east rift eruption of Kīlauea Volcano, Hawai'i
J. Soubestre, B. Chouet, Phillip B. Dawson
2021, Journal of Geophysical Research: Solid Earth (126)
Volcanic tremor occurring at the beginning of the 2018 Kīlauea eruption is characterized using both seismic and tilt data recorded at the Kīlauea summit. An automatic seismic network-based approach detects several types of tremor including (a) 0.5–1 Hz long-period tremor preceding the eruption, located at the south-southwest edge...
GIS-based identification of areas that have resource potential for sediment-hosted Pb-Zn deposits in Alaska
Karen D. Kelley, Garth E. Graham, Keith A. Labay, Nora B. Shew
2021, Open-File Report 2020-1147
A state-wide Geographic Information System analysis was conducted to assess prospectivity for lead (Pb) and zinc (Zn) in sediment-hosted deposits in Alaska. The datasets that were utilized include publicly available geospatial datasets of lithologic, geochemical, and mineral occurrence data. Key characteristics of Pb-Zn deposits were identified in available datasets and...
Incorporating climate change in a harvest risk assessment for polar bears Ursus maritimus in Southern Hudson Bay
Eric V. Regehr, Markus Dyck, Samuel A. Iverson, David S. Lee, Nicholas J Lunn, Joseph M Northrup, Marie-Claude Richer, Guillaume Szor, Michael C. Runge
2021, Biological Conservation (258)
Arctic marine mammals are harvested by Indigenous people for subsistence and are socially and culturally important. For ice-dependent species like the polar bear Ursus maritimus, management and conservation require understanding interactions between harvest and sea-ice loss due to climate change. We developed a demographic...
Rupture passing probabilities at fault bends and steps, with application to rupture length probabilities for earthquake early warning
Glenn Biasi, Steven G. Wesnousky
2021, Bulletin of the Seismological Society of America (111) 2235-2247
Earthquake early warning (EEW) systems can quickly identify the beginning of a significant earthquake rupture, but the first seconds of seismic data have not been found to predict the final rupture length. We present two approaches for estimating probabilities of rupture length given the rupture initiation from an EEW system....
Molluscan aminostratigraphy of the US Mid-Atlantic Quaternary coastal system: Implications for onshore-offshore correlation, paleochannel and barrier island evolution, and local late Quaternary sea-level history
John Wehmiller, Laura L. Brothers, Kelvin Ramsey, David S. Foster, C.R. Mattheus, Christopher Hein, Justin L. Shawler
2021, Quaternary Geochronology (66)
The Quaternary record of the US Mid-Atlantic coastal system includes onshore emergent late Pleistocene shoreline deposits, offshore inner shelf and barrier island units, and paleovalleys formed during multiple glacial stage sea-level lowstands. The geochronology of this coastal system is based on uranium series, radiocarbon, amino acid racemization (AAR), and optically...
Modeling of future COVID-19 cases, hospitalizations, and deaths, by vaccination rates and nonpharmaceutical intervention scenarios — United States, April–September 2021
Rebecca K. Borchering, Cecile Viboud, Emily Howerton, Claire P. Smith, Shaun Truelove, Michael C. Runge, Nicholas G. Reich, Lucie Contamin, John Levander, Jessica Salerno, Wilbert van Panhuis, Matt Kinsey, Kate Tallaksen, R. Freddy Obrecht, Laura Asher, Cash Costello, Michael Kelbaugh, Shelby Wilson, Lauren Shin, Molly Gallagher, Luke Mullany, Kaitlin Rainwater-Lovett, Joseph Lemaitre, Juan Dent, Kyra Grantz, Joshua Kaminsky, Stephen Lauer, Elizabeth Lee, Hannah Meredith, Javier Perez-Saez, Lindsay T. Keegan, Dean Karlen, Matteo Chinazzi, Jessica Davis, Kunpeng Mu, Xinyue Xiong, Ana Pastore y Piontti, Alessandro Vespignani, Ajitesh Srivastava, Przemyslaw Porebski, Srinivasan Venkatramanan, Aniruddha Adiga, Bryan Lewis, Brian Klahn, Joseph Outten, James Schlitt, Patrick Corbett, Pyrros A. Telionis, Lijing Wang, Akhil S. Peddireddy, Benjamin Hurt, Jiangzhuo Chen, Anil Vullikanti, Madhav Marathe, Jessica Healy, Rachel B. Slayton, Matthew Biggerstaff, Michael A Johansson, Katriona Shea, Justin Lessler
2021, Morbidity and Mortality Weekly Report (70) 719-724
What is already known about this topic?Increases in COVID-19 cases in March and early April occurred despite a large-scale vaccination program. Increases coincided with the spread of SARS-CoV-2 variants and relaxation of nonpharmaceutical interventions (NPIs).What is added by this report?Data from six models indicate that with high vaccination coverage and...
Tectonostratigraphic record of late Miocene–early Pliocene transtensional faulting in the Eastern California shear zone, southwestern USA
Rebecca J. Dorsey, Brennan O’Connell, Kevin Gardner, Mindy B. Homan, Scott E.K. Bennett, Jacob Thacker, Michael H. Darin
2021, Geosphere (17) 1101-1125
The Eastern California shear zone (ECSZ; southwestern USA) accommodates ~20%–25% of Pacific–North America relative plate motion east of the San Andreas fault, yet little is known about its early tectonic evolution. This paper presents a detailed stratigraphic and structural analysis of the uppermost Miocene to lower Pliocene Bouse Formation in...
The 2018 update of the US National Seismic Hazard Model: Ground motion models in the western US
Peter M. Powers, Sanaz Rezaeian, Allison Shumway, Mark D. Petersen, Nico Luco, Oliver S. Boyd, Morgan P. Moschetti, Arthur D. Frankel, Eric M. Thompson
2021, Earthquake Spectra (37) 2315-2341
The U.S. Geological Survey (USGS) National Seismic Hazard Model (NSHM) is the scientific foundation of seismic design regulations in the United States and is regularly updated to consider the best available science and data. The 2018 update of the conterminous U.S. NSHM includes significant changes to the...
How would a volcanic eruption affect your Tribe?
Cynthia A. Gardner, Joseph A. Bard
2021, General Information Product 209
Volcanic eruptions are rare, but when they occur, they can profoundly affect nearby communities. In order to determine which communities are at risk, and in order for those communities to mitigate their risk, communities need to know whether they are in or near volcano hazard zones and have basic information...
Surface Rupture Map of the 2020 M 6.5 Monte Cristo Range earthquake, Esmeralda and Mineral counties, Nevada
Seth Dee, Richard D Koehler, Austin John Elliott, Alexandra Elise Hatem, Alexandra Pickering, Ian Pierce, Gordon G. Seitz, Camille Marie Collett, Timothy E. Dawson, Conni De Masi, Craig M dePolo, Evan Hartsorn, Christopher Madugo, Charles Cashman Trexler, Danielle M Verdugo, Steven G. Wesnousky, Judith Zachariasen
2021, Nevada Bureau of Mines and Geology Map 190
The 15 May 2020, M6.5 Monte Cristo Range earthquake was the largest earthquake in Nevada in over 66 years and occurred in a sparsely populated area of western Nevada about 74 km southeast of the town of Hawthorne. The earthquake produced surface rupture distributed across a 28-km-long zone along the...
Zircon geochronology and geochemistry of Quaternary rhyolite domes of the Coso volcanic field, Inyo County, California
Seth D. Burgess, Matthew Coble, Jorge A. Vazquez
2021, Journal of Volcanology and Geothermal Research (417)
The Quaternary Coso volcanic field (CVF) is a compositionally bimodal volcanic field located within a releasing bend along the eastern range-front Sierra Nevada fault zone in California's southern Owens Valley. The erupted products of CVF silicic magmatism since ~1 Ma comprise 38 high-silica rhyolite domes,...
White-nose syndrome-related changes to Mid-Atlantic bat communities across an urban-to-rural gradient
Sabrina M. Deeley, Joshua B. Johnson, W. Mark Ford, J. Edward Gates
2021, BMC Zoology (6) 1-11
BackgroundWhite-nose Syndrome (WNS) has reduced the abundance of many bat species within the United States’ Mid-Atlantic region. To determine changes within the National Park Service National Capital Region (NCR) bat communities, we surveyed the area with mist netting and active acoustic sampling (2016–2018) and compared findings to pre-WNS...
Comparative rhyolite systems: Inferences from vent patterns and eruptive episodicities: Eastern California and Laguna del Maule
Edward Hildreth
2021, Journal of Geophysical Research (126)
Distilling my experience in having field mapped in detail the volcanic fields at Laguna del Maule and Long Valley and having worked out their time-volume-composition magmatic histories, I compare and contrast the postglacial rhyolites of the former with six multi-vent eruptive sequences of rhyolite in California....
Hydraulic characterization of carbonate-rock and basin-fill aquifers near Long Canyon, Goshute Valley, northeastern Nevada
C. Amanda Garcia, Keith J. Halford, Philip M. Gardner, David W. Smith
2021, Scientific Investigations Report 2021-5021
Understanding groundwater flow and pumping effects near pending mining operations requires accurate subsurface hydraulic characterization. To improve conceptual models of groundwater flow and development in the complex hydrogeologic system near Long Canyon Mine, in northwestern Goshute Valley, northeastern Nevada, the U.S. Geological Survey characterized the hydraulic properties of carbonate...
Activity patterns of anadromous fish below a tide gate: Observations from high‐resolution imaging sonar
Christopher B. Rillahan, Derrick Alcott, Theodore R. Castro-Santos, Pingguo He
2021, Marine and Coastal Fisheries: Dynamics, Management, and Ecosystem Science (13) 200-212
The construction of dams and tide gates on waterways has altered the physical structure of many coastal, estuarine, and freshwater systems. These changes have come at a cost to fish populations, most notably diadromous species, which rely on connectivity between marine and freshwater systems. These anthropogenic...
Comparisons among three diet analyses demonstrate multiple patterns in the estimated adult diet of a freshwater piscivore, Salvelinus namaycush
Matthew H. Futia, Scott F. Colborne, Aaron T. Fisk, Dimitry Gorsky, Timothy B. Johnson, Brian F. Lantry, Jana Lantry, Jacques Rinchard
2021, Ecological Indicators (127)
Understanding trophic interactions is critical for successful resource management. However, studying diet patterns (e.g., spatial and seasonal changes) can require extensive effort. Using individual analyses to interpret patterns may be further complicated by assumptions and limitations of the analytical approach. We investigated and compared predicted adult lake trout (Salvelinus namaycush)...
Wetland conservation: Challenges related to water law and farm policy
Sammy L. King, M. Laubbhan, P. Tashjian, J. Vradenburg, L. Fredrickson
2021, Wetlands (41) 1-17
Water is essential for wetland function and sustaining migratory networks for wetland wildlife across broad landscapes. Groundwater declines and surface flow reductions that impact aquatic and wetland organisms are common in the western U.S. and increasingly in the eastern U.S. Agriculture is the largest consumptive water user in the U.S....
Late Pleistocene baldcypress (Taxodium distichum) forest deposit on the continental shelf of the northern Gulf of Mexico
Kristine L. DeLong, Suyapa Gonzalez, Jeffrey B. Obelcz, Jonathan T. Truong, Samuel J. Bentley Sr., Kehui Xu, Carl A. Reese, Grant L. Harley, Alicia Caporaso, Zhixiong Shen, Beth Middleton
2021, Boreas (50) 871-892
Approximately 13 km south of Gulf Shores, Alabama (United States), divers found in situ baldcypress (Taxodium distichum) stumps 18 m below the ocean surface. These trees could have only lived when sea level fell during the Pleistocene subaerially exposing the tectonically stable continental shelf. Here we investigate the geophysical properties along with microfossil and...
Effects of prescribed fire timing on vigor of the invasive forb sericea lespedeza (Lespedeza cuneata), total forage biomass accumulation, plant-community composition, and native fauna on tallgrass prairie in the Kansas Flint Hills
Jonathan Alexander, Walter H. Fick, Sarah Ogden, David A. Haukos, Jack Lemmon, Garth A. Gatson, K. C. Olson
2021, Translational Animal Science (5)
The predominant grazing-management practice of the Kansas Flint Hills involves annual prescribed burning in March or April with postfire grazing by yearling beef cattle at a high stocking density from April to August. There has been a dramatic increase in sericea lespedeza (Lespedeza cuneata [Dumont] G. Don) coincident with this temporally...
Intact landscape promotes gene flow and low genetic structuring in the threatened Eastern Massasauga Rattlesnake
Nathan Kudla, Eric M. McCluskey, Vijay Lulla, Ralph Grundel, Jennifer A. Moore
2021, Ecology and Evolution (11) 6276-6288
Genetic structuring of wild populations is dependent on environmental, ecological, and life-history factors. The specific role environmental context plays in genetic structuring is important to conservation practitioners working with rare species across areas with varying degrees of fragmentation. We investigated fine-scale genetic patterns of the federally threatened Eastern Massasauga Rattlesnake...
Optimal strategies for managing wildlife harvest under climate change
Anna Maureen Tucker, Michael C. Runge
2021, Journal of Wildlife Management (85) 847-854
Wildlife populations are experiencing shifting dynamics due to climate and landscape change. Management policies that fail to account for non‐stationary dynamics may fail to achieve management objectives. We establish a framework for understanding optimal strategies for managing a theoretical harvested population under non‐stationarity. Building from harvest...
Time-domain electromagnetic soundings and passive-seismic measurements for delineation of saline groundwater in the Genesee Valley-fill aquifer system, western New York, 2016–17
John Williams, William M. Kappel, Carole D. Johnson, Eric A. White, Paul M. Heisig, John W. Lane Jr.
2021, Scientific Investigations Report 2021-5008
The U.S. Geological Survey, in cooperation with the New York State Department of Environmental Conservation, used noninvasive surface geophysics in the investigation of the distribution of saline groundwater in the valley-fill aquifer system of the Genesee River Valley near the former Retsof salt mine in western New York. In 1994,...
Capturing the transient hydrological response in sandy soils during a rare cloudburst associated with shallow slope failures; A case study in the Atlantic Highlands, New Jersey, USA
Francis Ashland, Pamela A. Reilly, Alex R. Fiore
2021, Quarterly Journal of Engineering Geology and Hydrogeology (54)
A cloudburst on 7 August 2018 in the coastal bluffs of the Atlantic Highlands, New Jersey, induced flooding, erosion and multiple shallow slope failures that adversely affected the surrounding hillside residential area. Historically, short-duration deluges are rare in the New York Bay region, with only eight cloudbursts of greater magnitude...
A framework for allocating conservation resources among multiple threats and actions
Joslin L. Moore, Abbey E Camaclang, Alana L. Moore, Cindy E Hauser, Michael C. Runge, Victor Picheny, Libby Rumpff
2021, Conservation Biology (35) 1639-1649
Land managers decide how to allocate resources among multiple threats that can be addressed through multiple possible actions. Additionally, these actions vary in feasibility, effectiveness, and cost. We sought to provide a way to optimize resource allocation to address multiple threats when multiple management options are...
