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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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The Southeastern U.S. as a complex of use sites for nonbreeding rufa Red Knots: Fifteen years of band-encounter data The Southeastern U.S. as a complex of use sites for nonbreeding rufa Red Knots: Fifteen years of band-encounter data
Shorebirds have been banded for decades and monitoring programs have helped to accumulate large band-encounter datasets from across the globe; however, many of these datasets are left largely unused, particularly those collected by citizen scientists. These datasets can provide valuable insight into the migration and movement strategies of shorebirds and the threats they face throughout...
Authors
M.E. Tuma, Abby Powell
Factors limiting reproductive success of American Oystercatchers (Haematopus palliatus) in Florida's southern Big Bend region Factors limiting reproductive success of American Oystercatchers (Haematopus palliatus) in Florida's southern Big Bend region
Florida's Big Bend region hosts the second largest concentration of breeding American Oystercatchers in the state, but reproductive success is low. Nest site characteristics and predation were examined to determine their influence on survival of nests and broods at two areas in the southern Big Bend (Cedar Key and Barge Canal). The probability of a nest surviving in Cedar Key was low (x̄...
Authors
N. Vitale, J. Brush, Abby Powell
Characterization of halogenated organic compounds in pelagic sharks and sea turtles using a nontargeted approach Characterization of halogenated organic compounds in pelagic sharks and sea turtles using a nontargeted approach
Halogenated organic compounds (HOCs) in marine species collected from the Atlantic Ocean [3 shortfin mako (Isurus oxyrinchus) and 1 porbeagle (Lamna nasus)], and 12 sea turtles collected from the Pacific Ocean [3 loggerhead (Caretta caretta), 3 green (Chelonia mydas), 3 olive ridley (Lepidochelys olivacea), and 3 hawksbill (Eretmochelys imbricata)] were analyzed with a nontargeted...
Authors
Aikebaier Renaguli, Sujan Fernando, Thomas M. Holsen, Philip K. Hopke, Douglas H. Adams, George H. Balazs, T. Todd Jones, Thierry M. Work, Bernard S. Crimmins, Jennifer M. Lynch
Multiple lines of evidence for identifying potential hazards to fish from contaminants of emerging concern in Great Lakes tributaries Multiple lines of evidence for identifying potential hazards to fish from contaminants of emerging concern in Great Lakes tributaries
Contaminants of emerging concern (CECs; e.g., pharmaceuticals, flame retardants, pesticides, and industrial chemicals) are omnipresent throughout tributaries to the Great Lakes. Furthermore, CECs are often present at concentrations that are potentially hazardous to aquatic species. Since 2010, we characterized the presence of CECs at 309 sites within 47 Great Lakes tributaries and...
Authors
Sarah M. Elliott, Daniel J. Gefell, Richard L. Kiesling, Stephanie L. Hummel, Chryssa K. King, Charles H. Christen, Satomi Kohno, Heiko L. Schoenfuss
The importance of forests in bumble bee biology and conservation The importance of forests in bumble bee biology and conservation
Declines of many bumble bee species have raised concerns because of their importance as pollinators and potential harbingers of declines among other insect taxa. At present, bumble bee conservation is predominantly focused on midsummer flower restoration in open habitats. However, a growing body of evidence suggests that forests may play an important role in bumble bee life history...
Authors
John Michael Mola, Jeremy Hemberger, Jade Kochanski, Leif L. Richardson, Ian S. Pearse
Resource use among top-level piscivores in a temperate reservoir: Implications for a threatened coldwater specialist Resource use among top-level piscivores in a temperate reservoir: Implications for a threatened coldwater specialist
Evaluations of resource use among native piscivores in natural lakes have consistently documented significant partitioning that supports coexistence. Partitioning may be less prominent in reservoirs where water-level fluctuations can compress habitat and trophic diversity, but studies are lacking. Stable isotopes and bioenergetic models were used to quantify trophic interactions within a...
Authors
Adam G. Hansen, Jennifer R. Gardner, Kristin A. Connelly, Matt Polacek, David Beauchamp
The impact of 3D finite‐fault information on ground‐motion forecasting for earthquake early warning The impact of 3D finite‐fault information on ground‐motion forecasting for earthquake early warning
We identify aspects of finite‐source parameterization that strongly affect the accuracy of estimated ground motion for earthquake early warning (EEW). EEW systems aim to alert users to impending shaking before it reaches them. The U.S. West Coast EEW system, ShakeAlert, currently uses two algorithms based on seismic data to characterize the earthquake’s location, magnitude, and origin...
Authors
Jessica R. Murray, Eric M. Thompson, Annemarie S. Baltay, Sarah E. Minson
Projecting the remaining habitat for the western spadefoot (Spea hammondii) in heavily urbanized southern California Projecting the remaining habitat for the western spadefoot (Spea hammondii) in heavily urbanized southern California
Extensive urbanization in coastal southern California has reduced natural habitat in this biodiversity hotspot. To better conserve ecological communities, state and federal agencies, along with local jurisdictions and private stakeholders, developed regional conservation plans for southern California. Although many protected areas exist within this region, the patchwork nature of these...
Authors
Jonathan P. Rose, Brian J. Halstead, Robert H. Packard, Robert N. Fisher
Oil and gas wastewater components alter streambed microbial community structure and function Oil and gas wastewater components alter streambed microbial community structure and function
The widespread application of directional drilling and hydraulic fracturing technologies expanded oil and gas (OG) development to previously inaccessible resources. A single OG well can generate millions of liters of wastewater, which is a mixture of brine produced from the fractured formations and injected hydraulic fracturing fluids (HFFs). With thousands of wells completed each year...
Authors
Denise M. Akob, Adam C. Mumford, Andrea Fraser, Cassandra Rashan Harris, William H. Orem, Matthew S. Varonka, Isabelle M. Cozzarelli
Airborne hybrid sensor maps the country: Multi-agency effort for testing a potential new hybrid 3DEP-NAIP sensor Airborne hybrid sensor maps the country: Multi-agency effort for testing a potential new hybrid 3DEP-NAIP sensor
No abstract available.
Authors
Jason M. Stoker, Aparajithan Sampath, Minsu Kim, Jeffrey Irwin, Eric Rounds, Josh Heyer, Julie Davenport, Gabe Bellante, Tony Kimmet, Collin McCormick, John Mootz
The silence of the clams: Forestry registered pesticides as multiple stressors on soft-shell clams The silence of the clams: Forestry registered pesticides as multiple stressors on soft-shell clams
Contaminants are ubiquitous in the environment, often reaching aquatic systems. Combinations of forestry use pesticides have been detected in both water and aquatic organism tissue samples in coastal systems. Yet, most toxicological studies focus on the effects of these pesticides individually, at high doses, and over acute time periods, which, while key for establishing toxicity and...
Authors
Alexandra G. Tissot, Elise F. Granek, Anne W Thompson, Michelle L. Hladik, Patrick W. Moran, Kaegen Scully-Engelmeyer
Influence of seasonal extreme flows on Brook Trout recruitment Influence of seasonal extreme flows on Brook Trout recruitment
Populations of Brook Trout Salvelinus fontinalis exhibit large variation in annual recruitment (abundance of young of the year [age 0]), which is likely a product of density-dependent and density-independent factors. Quantifying the importance of each of these mechanisms in regulating Brook Trout recruitment would be valuable to managers that are responsible for the conservation of this...
Authors
John A. Sweka, Tyler Wagner