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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.
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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Trends in agricultural triazole fungicide sse in the United States, 1992–2016 and possible implications for antifungal-resistant fungi in human disease Trends in agricultural triazole fungicide sse in the United States, 1992–2016 and possible implications for antifungal-resistant fungi in human disease
Background: The fungus Aspergillus fumigatus (A. fumigatus) is the leading cause of invasive mold infections, which cause severe disease and death in immunocompromised people. Use of triazole antifungal medications in recent decades has improved patient survival; however, triazole-resistant infections have become common in parts of Europe and are emerging in the United States. Triazoles...
Authors
Mitsuru Toda, Karlyn D. Beer, Kathryn Kuivila, Tom M. Chiller, Brendan R. Jackson
Environmental factors predicting the orientation of sea turtle hatchlings on a naturally lighted beach: A baseline for light-management goals Environmental factors predicting the orientation of sea turtle hatchlings on a naturally lighted beach: A baseline for light-management goals
On sea turtle nesting beaches, artificial lighting associated with human development interferes with hatchling orientation from nest to sea. Although hatchling disorientation has been documented for many beaches, data that managers can use in understanding, predicting, and managing the issue are of limited detail. The present study provides baseline hatchling orientation data that can be...
Authors
S. Hirama, B. Witherington, K. Kneifl, A. Sylvai, M. Wideroff, Raymond Carthy
Water quality associations and spatiotemporal distribution of the harmful alga Prymnesium parvum in an impounded urban stream system Water quality associations and spatiotemporal distribution of the harmful alga Prymnesium parvum in an impounded urban stream system
The Jim Bertram Lake System consists of several stream impoundments within the City of Lubbock, Texas (USA). Baseflow in the upstream reach is dominated by nitrogen-rich-treated wastewater. While toxic blooms of Prymnesium parvum have occurred in this system for ∼2 decades during fall or winter-spring, little is known about water quality variables that facilitate blooms or the alga’s
Authors
J. B. Clayton, Reynaldo Patino, R. H. Rashel, S. Tábora-Sarmiento
Structure and Qp-Qs relations in the Seattle and Tualatin basins from converted seismic phases Structure and Qp-Qs relations in the Seattle and Tualatin basins from converted seismic phases
We use converted body‐wave phases from local earthquakes to constrain depth to basement and average attenuation relations for the Seattle basin in Washington and the Tualatin basin in Oregon. P‐, P‐to‐S‐(Ps), S‐to‐P‐(Sp), and S‐wave arrivals are present in three‐component recordings of magnitude 2.5–4.0 earthquakes at seismic stations located in these basins. Based on their relative...
Authors
Ian Stone, Erin A. Wirth, Arthur D. Frankel
Long-term monitoring reveals convergent patterns of recovery from mining contamination across 4 western US watersheds Long-term monitoring reveals convergent patterns of recovery from mining contamination across 4 western US watersheds
Long-term studies of stream ecosystems are essential for assessing restoration success because they allow researchers to quantify recovery trajectories, gauge the relative influence of episodic events, and determine the time required to achieve clean-up objectives. To quantify responses of benthic macroinvertebrate assemblages to stream remediation, we integrated results of 4 long-term...
Authors
William H. Clements, David B. Herbst, Michelle I. Hornberger, Christopher A. Mebane, Terry M. Short
Adaptive management to improve eagle conservation at terrestrial wind facilities Adaptive management to improve eagle conservation at terrestrial wind facilities
The development and installation of renewable energy comes with environmental cost, including the death of wildlife. These costs occur locally, and seem small compared to the global loss of biodiversity. However, failure to acknowledge uncertainties around these costs affects local conservation, and may lead to the loss of populations or species. Working with these uncertainties can...
Authors
Leslie New, Juniper L Simonis, Mark C Otto, Emily R. Bjerre, Michael C. Runge, Brian A. Millsap
Comparisons among three diet analyses demonstrate multiple patterns in the estimated adult diet of a freshwater piscivore, Salvelinus namaycush Comparisons among three diet analyses demonstrate multiple patterns in the estimated adult diet of a freshwater piscivore, Salvelinus namaycush
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...
Authors
Matthew H. Futia, Scott F. Colborne, Aaron T. Fisk, Dimitry Gorsky, Timothy B. Johnson, Brian F. Lantry, Jana Lantry, Jacques Rinchard
Rapid metal pollutant deposition from the volcanic plume of Kīlauea, Hawai’i Rapid metal pollutant deposition from the volcanic plume of Kīlauea, Hawai’i
Long-lived basaltic volcanic eruptions are a globally important source of environmentally reactive, volatile metal pollutant elements such as selenium, cadmium and lead. The 2018 eruption of Kīlauea, Hawai’i produced exceptionally high discharge of metal pollutants, and was an unprecedented opportunity to track them from vent to deposition. Here we show, through geochemical sampling of...
Authors
E. Ilyinskaya, E. Mason, P.E. Wieser, Lacey Holland, E. J. Liu, T.A. Mather, M. Edmonds, R.C.W. Whitty, Tamar Elias, Patricia A. Nadeau, James Ciszewski, David J. Schneider, Jim McQuaid, Sarah Allen, C. Oppenheimer, Christoph Kern, David Damby
Volatile metal emissions from volcanic degassing and lava–seawater interactions at Kīlauea Volcano, Hawai’i Volatile metal emissions from volcanic degassing and lava–seawater interactions at Kīlauea Volcano, Hawai’i
Volcanoes represent one of the largest natural sources of metals to the Earth’s surface. Emissions of these metals can have important impacts on the biosphere as pollutants or nutrients. Here we use ground- and drone-based direct measurements to compare the gas and particulate chemistry of the magmatic and lava–seawater interaction (laze) plumes from the 2018 eruption of Kīlauea, Hawai’i...
Authors
E. Mason, P.E. Wieser, E. J. Liu, M. Edmonds, E. Ilyinskaya, R.C.W. Whitty, T.A. Mather, Tamar Elias, Patricia A. Nadeau, C. Wilkes, A.J.S. McGonigle, T.D. Pering, F.M. Mims, Christoph Kern, David J. Schneider, C. Oppenheimer
Wetland conservation: Challenges related to water law and farm policy Wetland conservation: Challenges related to water law and farm policy
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. and understanding economic incentives of water...
Authors
Sammy L. King, M. Laubbhan, P. Tashjian, J. Vradenburg, L. Fredrickson
Biodiversity effects on grape quality depend on variety and management intensity Biodiversity effects on grape quality depend on variety and management intensity
Interactions between plants can be beneficial, detrimental or neutral. In agricultural systems, competition between crop and spontaneous vegetation is a major concern. We evaluated the relative support for three non-exclusive ecological hypotheses about interactions between crop and spontaneous plants based on competition, complementarity or facilitation.The study was conducted in Swiss...
Authors
Magdalena Steiner, James Grace, Sven Bacher
Postwildfire soil‐hydraulic recovery and the persistence of debris flow hazards Postwildfire soil‐hydraulic recovery and the persistence of debris flow hazards
Deadly and destructive debris flows often follow wildfire, but understanding of changes in the hazard potential with time since fire is poor. We develop a simulation‐based framework to quantify changes in the hydrologic triggering conditions for debris flows as postwildfire infiltration properties evolve through time. Our approach produces time‐varying rainfall intensity‐duration...
Authors
Matthew A. Thomas, Francis K. Rengers, Jason W. Kean, Luke A. McGuire, Dennis M. Staley, Katherine R. Barnhart, Brian A. Ebel