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Browse more than 65,000 articles authored by our scientists over the past 100+ year history of the USGS and refine search by topic, location, year, and advanced search.

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Establishment of terrestrial mammals on former reservoir beds following large dam removal on the Elwha River, Washington, USA Establishment of terrestrial mammals on former reservoir beds following large dam removal on the Elwha River, Washington, USA

Terrestrial wildlife species are important yet often overlooked taxa in the recovery of ecosystems following dam removal. Their presence can shape ecosystem recovery, signal restoration of ecosystem function, and influence food web dynamics and nutrient transfer. We used camera traps to examine seasonal use of two former reservoir beds and an upstream reference reach by the mammalian...
Authors
Rebecca M. McCaffery, Sara Cendejas-Zarelli, Katy R Goodwin, Patricia J. Happe, Kurt Jenkins, Kimberly A. Sager-Fradkin

Linking temperature sensitivity of mangrove communities, populations and individuals across a tropical-temperate transitional zone Linking temperature sensitivity of mangrove communities, populations and individuals across a tropical-temperate transitional zone

Climate change is reshaping coastal wetlands worldwide, driving ecosystem shifts like mangrove poleward expansion into saltmarshes in tropical-temperate transitional zones. Though warming is recognized as the primary driver, a lack of detailed field studies limits our ability to predict mangrove responses to rapid climate warming.Here, we characterized how mangroves vary across a...
Authors
Yiyang Kang, David A. Kaplan, Michael Osland

Noise constraints on global body‐wave measurement thresholds Noise constraints on global body‐wave measurement thresholds

Intermediate sized earthquakes (≈M4–6.5) are often measured using the teleseismic body‐wave magnitude (⁠𝑚b⁠). 𝑚b measurements are especially critical at the lower end of this range when teleseismic waveform modeling techniques (i.e., moment tensor analysis) are difficult. The U.S. Geological Survey National Earthquake Information Center (NEIC) determines the location and magnitude of all...
Authors
Adam T. Ringler, David C. Wilson, Paul S. Earle, William L. Yeck, David B. Mason, Justin T. Wilgus

Limited evidence of late Quaternary tectonic surface deformation in the eastern Tennessee seismic zone, USA Limited evidence of late Quaternary tectonic surface deformation in the eastern Tennessee seismic zone, USA

The ~300-km-long eastern Tennessee seismic zone (ETSZ), USA, is the second-most seismically active region east of the Rocky Mountains. Seismicity generally occurs below the Paleozoic fold-and-thrust belt within the Mesoproterozoic basement, at depths of 5–26 km, and earthquake magnitudes during the instrumental record have been moment magnitude ( Mw)≤4.8. Evidence of surface deformation...
Authors
Jessica A. Thompson Jobe, Richard W. Briggs, Ryan D. Gold, Laurel Bauer, Camille Collett

Fair graph learning using constraint-aware priority adjustment and graph masking in river networks Fair graph learning using constraint-aware priority adjustment and graph masking in river networks

Accurate prediction of water quality and quantity is crucial for sustainable development and human well-being. However, existing data-driven methods often suffer from spatial biases in model performance due to heterogeneous data, limited observations, and noisy sensor data. To overcome these challenges, we propose Fair-Graph, a novel graph-based recurrent neural network that leverages...
Authors
Erhu He, Yiqun Xie, Alexander Y. Sun, Jacob Aaron Zwart, Jie Yang, Zhenong Jin, Yang Wang, Hassan Ali Karimi, Xiaowei Jia

Association of water arsenic with incident diabetes in U.S. adults: The Multi-Ethnic Study of Atherosclerosis and The Strong Heart Study Association of water arsenic with incident diabetes in U.S. adults: The Multi-Ethnic Study of Atherosclerosis and The Strong Heart Study

OBJECTIVE We examined the association of arsenic in federally regulated community water systems (CWSs) and unregulated private wells with type 2 diabetes (T2D) incidence in the Strong Heart Family Study (SHFS), a prospective study of American Indian communities, and the Multi-Ethnic Study of Atherosclerosis (MESA), a prospective study of racially and ethnically diverse urban U.S...
Authors
Maya Spaur, Marta Galvez-Fernandez, Qixuan Chen, Melissa A. Lombard, Benjamin Bostick, Pam Factor-Litvak, Amanda Fretts, Steven Shea, Ana Navas-Acien, Anne E Nigra

Plant-derived products selectively suppress growth of the harmful alga Prymnesium parvum Plant-derived products selectively suppress growth of the harmful alga Prymnesium parvum

Prymnesium parvum is a harmful alga found in brackish waters worldwide whose toxins can be lethal to aquatic organisms. Established field methods to control blooms of this species, however, are unavailable. Earlier studies showed that various extracts of giant reed (Arundo donax) can suppress P. parvum growth and that ellipticine, an allelochemical present in giant reed, is a potent...
Authors
Mousumi A. Mary, Shisbeth Tabora-Sarmiento, Sarah Nash, Gregory D. Mayer, Jordan Crago, Reynaldo Patino

Exploring and integrating differences in niche characteristics across regional and global scales to better understand plant invasions in Hawaiʻi Exploring and integrating differences in niche characteristics across regional and global scales to better understand plant invasions in Hawaiʻi

The spread of ecosystem modifying invasive plant (EMIP) species is one of the largest threats to native ecosystems in Hawaiʻi. However, differences in niche characteristics between Hawaiʻi’s isolated insular environment and the wider global distribution of these species have not been carefully examined. We used species distribution modeling (SDM) methods to assess similarities and...
Authors
Lucas Berio Fortini, Lauren R. Kaiser, Curtis Daehler, James D. Jacobi, Monica Dimson, Thomas W Gillespie

The relative contributions of habitat area, configuration, and vegetative diversity on snake and lizard presence in agricultural landscapes The relative contributions of habitat area, configuration, and vegetative diversity on snake and lizard presence in agricultural landscapes

Nearly one in five reptile species is at risk of extinction. Changes in habitat area, its configuration, and vegetation diversity could affect habitat use, but their relative importance is understudied. We assessed how these factors affected reptile presence in agricultural landscapes figure in Iowa, United States, using 695 cover boards visited 16,441 times in 2015–2020. Species-wise...
Authors
Matthew D. Stephenson, Lisa A. Schulte, Robert W. Klaver

Reduced freshwater mussel juvenile production as a result of agricultural and urban contaminant mixture exposures Reduced freshwater mussel juvenile production as a result of agricultural and urban contaminant mixture exposures

Freshwater mussels provide invaluable ecological services but are threatened by habitat alteration, poor water quality, invasive species, climate change, and contaminants, including contaminants of emerging concern (CECs). Contaminants of emerging concerns are well documented in aquatic environments, including the Great Lakes Basin, but limited information is available on how...
Authors
Molly Anne Richard, Sarah M. Elliott, Stephanie L. Hummel, D.A. Woolnough, Lacey D. Rzodkiewicz, Stephanie Gill, Justin Rappold, Mandy Annis

The role of sediment ingestion in exposing bottom-feeding fish to chemical elements The role of sediment ingestion in exposing bottom-feeding fish to chemical elements

Digesta were collected from the intestines of seven species of bottom-feeding fish to better understand the role of incidental ingestion of sediment in exposing fish to inorganic contaminants. A composite sediment tracer variable, based on concentrations of Co, Cr, Ni, Ti, V, and Y in digesta and in sediment, was calculated to estimate sediment content of digesta. Concentration factors...
Authors
W. Nelson Beyer, Alfred E. Pinkney

Seismic attenuation and stress on the San Andreas Fault at Parkfield: Are we critical yet? Seismic attenuation and stress on the San Andreas Fault at Parkfield: Are we critical yet?

The Parkfield transitional segment of the San Andreas Fault (SAF) is characterized by the production of frequent quasi-periodical M6 events that break the very same asperity. The last Parkfield mainshock occurred on 28 September 2004, 38 years after the 1966 earthquake, and after the segment showed a ∼22 years average recurrence time. The main reason for the much longer interevent period...
Authors
Luca Malagnini, Robert M. Nadeau, Thomas E. Parsons
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