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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.
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Paranannizziopsis spp. Infection in Wild Vipers, Europe Paranannizziopsis spp. Infection in Wild Vipers, Europe
We describe the first detection of Paranannizziopsis sp. in a wild population of vipers in Europe. Fungal infections were severe and one individual likely died from infection. Surveillance efforts are needed to better understand the threat of this pathogen to snake conservation.
Authors
Gaelle Blanvillain, Fernando Martínez-Freiría, Joseph R. Hoyt, Jeffrey M. Lorch, Albert Martinez Silvestre
Forecasting the long-term spatial distribution of earthquakes for the 2023 US National Seismic Hazard Model using gridded seismicity Forecasting the long-term spatial distribution of earthquakes for the 2023 US National Seismic Hazard Model using gridded seismicity
Probabilistic seismic hazard analyses such as the U.S. National Seismic Hazard Model (NSHM) typically rely on declustering and spatially smoothing an earthquake catalog to estimate a long‐term time‐independent (background) seismicity rate to forecast future seismicity. In support of the U.S. Geological Survey’s (USGS) 2023 update to the NSHM, we update the methods used to develop this...
Authors
Andrea L. Llenos, Andrew J. Michael, Allison M. Shumway, Justin L. Rubinstein, Kirstie Lafon Haynie, Morgan P. Moschetti, Jason M. Altekruse, Kevin R. Milner
Hotspots of biogeochemical activity linked to aridity and plant traits across global drylands Hotspots of biogeochemical activity linked to aridity and plant traits across global drylands
Perennial plants create productive and biodiverse hotspots, known as fertile islands, beneath their canopies. These hotspots largely determine the structure and functioning of drylands worldwide. Despite their ubiquity, the factors controlling fertile islands under conditions of contrasting grazing by livestock, the most prevalent land use in drylands, remain virtually unknown. Here we...
Authors
David J. Eldridge, Jingyi Ding, Josh Dorrough, Manuel Delgado-Baquerizo, Osvaldo E. Sala, Nicolas Gross, Yoann Le Bagousse-Pinguet, Max Mallen-Cooper, Hugo Saiz, Sergio Asensio, Victoria Ochoa, Beatriz Gozalo, Emilio Guirado, Miguel García-Gómez, Enrique Valencia, Jaime Martinez-Valderrama, Cesar Plaza, Mehdi Abedi, Negar Ahmadian, Rodrigo J. Ahumada, Julio M. Alcantara, Fateh Amghar, Luisa Azevedo, Farah Ben Salem, Miguel Berdugo, Niels Blaum, Bazartseren Boldgiv, Matthew A. Bowker, Donaldo Bran, Chongfeng Bu, Rafaella Canessa, Andrea P. Castillo-Monroy, Ignacio Castro, Patricio Castro-Quezada, Simone Cesarz, Roukaya Chibani, Abel Augusto Conceicao, Anthony Darrouzet-Nardi, Yvonne C. Davila, Balazs Deak, Paloma Diaz-Martinez, David A. Donoso, Andrew David Dougill, Jorge Duran, Nico Eisenhauer, Hamid Ejtehadi, Carlos Ivan Espinosa, Alex Fajardo, Mohammad Farzam, Ana Foronda, Jorgelina Franzese, Lauchlan H. Fraser, Juan J. Gaitan, Katja Geissler, Sofia Laura Gonzalez, Elizabeth Gusman-Montalvan, Rosa Mary Hernandez, Norbert Holzel, Frederic Mendes Hughes, Oswaldo Jadan, Anke Jentsch, Mengchen Ju, Kudzai F. Kaseke, Melanie Kobel, Anika Lehmann, Pierre Liancourt, Anja Linstadter, Michelle A. Louw, Quanhui Ma, Mancha Mabaso, Gillian Maggs-Kolling, Thulani P. Makhalanyane, Oumarou Malam Issa, Eugene Marais, Mitchel P McClaran, Betty J. Mendoza, Vincent Mokoka, Juan P. Mora, Gerardo Moreno, Seth M. Munson, Alice Nunes, Gabriel Oliva, Gastón R. Oñatibia, Brooke B. Osborne, Guadalupe Peter, Margerie Pierre, Yolanda Pueyo, R. Emiliano Quiroga, Sasha C. Reed, Ana Rey, Pedro J. Rey, Victor Manuel Reyes Gomez, Víctor Rolo, Matthias C. Rillig, Peter C. le Roux, Jan Christian Ruppert, Ayman Salah, Phokgedi Julius Sebei, Anarmaa Sharkhuu, Ilan Stavi, Colton R. A. Stephens, Alberto L. Teixido, Andrew David Thomas, Katja Tielborger, Silvia Torres Robles, Samantha K. Travers, Orsolya Valko, Liesbeth van den Brink, Frederike Velbert, Andreas von Hessberg, Wanyoike Wamiti, Deli Wang, Lixin Wang, Glenda M. Wardle, Laura Yahdjian, Eli Zaady, Yuanming Zhang, Xiaobing Zhou, Fernando T. Maestre
Seasonal mortality of Wild Atlantic Menhaden (Brevoortia tyrannus) is caused by a virulent clone of Vibrio (Listonella) anguillarum; Implications for biosecurity along the Atlantic Coastal United States Seasonal mortality of Wild Atlantic Menhaden (Brevoortia tyrannus) is caused by a virulent clone of Vibrio (Listonella) anguillarum; Implications for biosecurity along the Atlantic Coastal United States
Atlantic menhaden are a highly migratory marine species in the Eastern United States that suffer from seasonal chronic mortality. Affected fish show neurologic signs referred to as spinning disease, including circling at the surface and erratic corkscrew swimming before death. We investigated three similar menhaden mortality events consistent with spinning disease in coastal New Jersey...
Authors
Jan Lovy, Luke R. Iwanowicz, Timothy J. Welch, Bassem Allem, Rodman G. Getchell, Sabrina Geraci-Yee, Christine L Goodale, Jeremy Snyder, Clayton D. Raines, Nilanjana Das
Methane seeps on the U.S. Atlantic margin: An updated inventory and interpretative framework Methane seeps on the U.S. Atlantic margin: An updated inventory and interpretative framework
Since the discovery of >570 methane flares on the northern U.S. Atlantic margin between Cape Hatteras and Georges Bank in the last decade, the acquisition of thousands of kilometers of additional water column imaging data has provided greater coverage at water depths between the outer continental shelf and the lower continental slope. The additional high-resolution data reveal >1400 gas...
Authors
Carolyn D. Ruppel, Adam Skarke, Nathaniel C. Miller, Maleen Kidiwela, Jared W. Kluesner, Wayne E. Baldwin
Estimating age and growth of Largemouth Bass in southwestern reservoirs using otoliths and scales Estimating age and growth of Largemouth Bass in southwestern reservoirs using otoliths and scales
Age and growth data are frequently used to monitor and manage important North American sport fishes such as Largemouth Bass Micropterus salmoides. Continental and regional growth standards have been developed for this species to assess fish growth over time and across space. However, Largemouth Bass age and growth data are infrequently collected in Arizona and the reliability of age...
Authors
Steven J. Ingram, Joshua D. Grant, Zachary S. Beard, Nathan Berg, Anna M. Ringelman, Scott A. Bonar
Evaluating streamflow and temperature effects on Bull Trout migration and survival with linear spatial capture-recapture models Evaluating streamflow and temperature effects on Bull Trout migration and survival with linear spatial capture-recapture models
Objective
Authors
Patti Wohner, Russell F. Thurow, James T. Peterson
Global patterns of allochthony in stream–riparian meta-ecosystems Global patterns of allochthony in stream–riparian meta-ecosystems
Ecosystems that are coupled by reciprocal flows of energy and nutrient subsidies can be viewed as a single “meta-ecosystem.” Despite these connections, the reciprocal flow of subsidies is greatly asymmetrical and seasonally pulsed. Here, we synthesize existing literature on stream–riparian meta-ecosystems to quantify global patterns of the amount of subsidy consumption by organisms...
Authors
Daniel C. Allen, James H. Larson, Christina Amy Murphy, Erica A. Garcia, Kurt E. Anderson, Michelle H. Busch, Alba Argerich, Alice M. Belskis, Kierstyn T. Higgins, Brooke E Penaluna, Veronica Saenz, Jay E. Jones, Matt R. Whiles
Integrating social-ecological outcomes into invasive species management: The Tamarix case Integrating social-ecological outcomes into invasive species management: The Tamarix case
Incorporating societal considerations into decisions related to invasive species management is desirable, but can be challenging because it requires a solid understanding of the ecological functions and socio-cultural and economic benefits and values of the invaded environment before and after invasion. The ecosystem service (ES) concept was designed to facilitate such decision-making by
Authors
Eduardo Gonzalez-Sargas, Patrick B. Shafroth, Francesc Baro
Increasing seasonal variation in the extent of rivers and lakes from 1984 to 2022 Increasing seasonal variation in the extent of rivers and lakes from 1984 to 2022
Knowledge of the spatial and temporal distribution of surface water is important for water resource management, flood risk assessment, monitoring ecosystem health, constraining estimates of biogeochemical cycles and understanding our climate. While global-scale spatiotemporal change detection of surface water has significantly improved in recent years due to planetary-scale remote...
Authors
Bjorn Nyberg, Roger Sayre, Elco Luijendijk
Empirical ground-motion basin response in the California Great Valley, Reno, Nevada, and Portland, Oregon Empirical ground-motion basin response in the California Great Valley, Reno, Nevada, and Portland, Oregon
We assess how well the Next-Generation Attenuation-West 2 (NGA-West2) ground-motion models (GMMs), which are used in the US Geological Survey’s (USGS) National Seismic Hazard Model (NSHM) for crustal faults in the western United States, predict the observed basin response in the Great Valley of California, the Reno basin in Nevada, and Portland and Tualatin basins in Oregon. These GMMs...
Authors
Sean Kamran Ahdi, Brad T. Aagaard, Morgan P. Moschetti, Grace Alexandra Parker, Oliver S. Boyd, William J. Stephenson
Tracking magma pathways and surface faulting in the Southwest Rift Zone and the Koaʻe fault system (Kīlauea volcano, Hawai ‘i) using photogrammetry and structural observations Tracking magma pathways and surface faulting in the Southwest Rift Zone and the Koaʻe fault system (Kīlauea volcano, Hawai ‘i) using photogrammetry and structural observations
Volcanic islands are often subject to flank instability, resulting from a combination of magmatic intrusions along rift zones and gravitational spreading causing extensional faulting at the surface. Here, we study the Koaʻe fault system (KFS), located south of the summit caldera of Kīlauea volcano in Hawaiʻi, one of the most active volcanoes on Earth, prone to active faulting, episodic...
Authors
Stefano Mannini, Joel Ruch, Richard W. Hazlett, Drew T. Downs, Carolyn Parcheta, Steven P. Lundblad, James Anderson, Ryan L. Perroy, Nicolas Oestreicher