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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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Quantifying the relative importance of biotic and abiotic factors in landscape-based models of stream fish distributions Quantifying the relative importance of biotic and abiotic factors in landscape-based models of stream fish distributions
Lotic fish species distributions are frequently predicted using remotely sensed habitat variables that characterize the adjacent landscape and serve as proxies for instream habitat. Recent advancements in statistical methodology, however, allow for leveraging fish assemblage data when predicting distributions. This is important because assemblage composition likely provides better...
Authors
Christopher A. Custer, Douglas P. Fischer, Geoffrey Smith, Aaron Henning, Megan Kepler Schall, Matthew K. Shank, Timothy A. Wertz, Daniel A. Isermann
Late-Quaternary surface displacements on accretionary wedge splay faults in the Cascadia Subduction Zone: Implications for megathrust rupture Late-Quaternary surface displacements on accretionary wedge splay faults in the Cascadia Subduction Zone: Implications for megathrust rupture
Because splay faults branch at a steep dip angle from the plate-boundary décollement in an accretionary wedge, their coseismic displacement can potentially result in larger tsunamis with distinct characteristics compared to megathrust-only fault ruptures, posing an enhanced hazard to coastal communities. Elsewhere, there is evidence of coseismic slip on splay faults during many of the...
Authors
Anna Ledeczi, Madeleine C. Lucas, Harold Tobin, Janet Watt, Nathaniel C. Miller
NEWTS1.0: Numerical model of coastal Erosion by Waves and Transgressive Scarps NEWTS1.0: Numerical model of coastal Erosion by Waves and Transgressive Scarps
Models of rocky-coast erosion help us understand the physical phenomena that control coastal morphology and evolution, infer the processes shaping coasts in remote environments, and evaluate risk from natural hazards and future climate change. Existing models, however, are highly complex, are computationally expensive, and depend on many input parameters; this limits our ability to...
Authors
Rose Elizabeth Palermo, J. Taylor Perron, Jason M. Soderblom, Samuel P. D. Birch, Alexander G. Hayes, Andrew D. Ashton
Thick- and thin-skinned contractional styles and the tectonic evolution of the northern Sangre de Cristo Mountains, Colorado, USA Thick- and thin-skinned contractional styles and the tectonic evolution of the northern Sangre de Cristo Mountains, Colorado, USA
The Sangre de Cristo Mountains of southern Colorado and northern New Mexico, USA, contain an unusual combination of thick- and thin-skinned contractional structures involving both basement and cover rocks in the Laramide Rocky Mountain foreland. These structures are truncated by down-faulted extensional basins to the east and west. Together with synorogenic sediments, these structures...
Authors
David A. Lindsey, Jonathan Saul Caine
Double take: Ingestion of two rats by a juvenile Burmese Python (Python bivittatus) in Big Cypress National Preserve, FL, USA Double take: Ingestion of two rats by a juvenile Burmese Python (Python bivittatus) in Big Cypress National Preserve, FL, USA
No abstract available.
Authors
Teah M. Evers, Andrea F. Currylow, Mark Robert Sandfoss, Lisa Marie McBride, Christina M. Romagosa, Wesley W. Boone, Jacquelyn C. Guzy, Gretchen Erika Anderson, Kristen Hart, Matthew McCollister, Amy A. Yackel Adams
Are researchers citing their data? A case study from the U.S. Geological Survey Are researchers citing their data? A case study from the U.S. Geological Survey
Data citation promotes accessibility and discoverability of data through measures carried out by researchers, publishers, repositories, and the scientific community. This paper examines how a data citation workflow has been implemented by the U.S. Geological Survey (USGS) by evaluating publication and data linkages. Two different methods were used to identify data citations: examining...
Authors
Grace C. Donovan, Madison Langseth
Role of edaphic, hydrologic, and land cover variables in determining dissolved organic carbon in Missouri (USA) reservoirs and streams Role of edaphic, hydrologic, and land cover variables in determining dissolved organic carbon in Missouri (USA) reservoirs and streams
In Missouri, distinct geophysical gradients influence statewide patterns in water quality. Here, we quantify the spatiotemporal variability of dissolved organic carbon (DOC) in reservoirs and streams and the edaphic, hydrologic, and land cover variables that account for cross-system variation. Datasets included statewide inventories collected over decades and studies with greater...
Authors
John R. Jones, Jennifer L. Graham, Daniel V. Obrecht, James D. Harlan, Matthew F. Knowlton, Carol Pollard, Jennifer Parris, Anthony P. Thorpe
Hiding in plain sight: Federally protected Ringed Map Turtles (Graptemys oculifera) found in a new river system Hiding in plain sight: Federally protected Ringed Map Turtles (Graptemys oculifera) found in a new river system
Understanding the geographical range of a species is essential to successful conservation and management, but their ranges are not always fully known. Ringed Map Turtles (Graptemys oculifera) have been federally listed as a Threatened species since 1986, and they have long been considered endemic to the Pearl River system of central Mississippi and southeastern Louisiana, USA. Based on a...
Authors
Brad Glorioso, Will Selman, Brian R. Kreiser, Aidan Ford
Challenges creating monarch butterfly management strategies for electric power companies in the United States Challenges creating monarch butterfly management strategies for electric power companies in the United States
Returning monarch butterflies (Danaus plexippus) to sustainable levels of abundance will require an array of contributors to protect and restore habitat over broad areas. Due to the diversity and scale of land managed by electric power companies across the monarch range, plus an additional 32 million hectares needed for new solar arrays by 2050 to meet renewable energy goals, the...
Authors
Jessica Fox, Kasey Allen, James E. Diffendorfer, Laura Lukens, Wayne E. Thogmartin, Christian Newman
Global mercury concentrations in biota: Their use as a basis for a global biomonitoring framework Global mercury concentrations in biota: Their use as a basis for a global biomonitoring framework
An important provision of the Minamata Convention on Mercury is to monitor and evaluate the effectiveness of the adopted measures and its implementation. Here, we describe for the first time currently available biotic mercury (Hg) data on a global scale to improve the understanding of global efforts to reduce the impact of Hg pollution on people and the environment. Data from the peer...
Authors
David C. Evers, Joshua T. Ackerman, Staffan Akerblom, Dominique Bally, Niladri Basu, Kevin Bishop, Nathalie Bodin, Hans Fredrik Veitberg Braaten, Mark Burton, Paco Bustamante, Celia Y. Chen, John Chetelat, Linroy Christian, Rune Dietz, Paul Drevnick, Collin A. Eagles-Smith, Luis Fernandez, Neil Hammerschlag, Mireille Harmelin-Vivien, Agustin Harte, Eva Kruemmel, Jose Lailson-Brito, Gabriella Medina, Cesar Rodriguez, Iain Stenhouse, Elsie M. Sunderland, Akinori Takeuchi, Timothy Tear, Claudia Vega, Simon Wilson, Pianpian Wu
Snow avalanches are a primary climate-linked driver of mountain ungulate populations Snow avalanches are a primary climate-linked driver of mountain ungulate populations
Snow is a major, climate-sensitive feature of the Earth’s surface and catalyst of fundamentally important ecosystem processes. Understanding how snow influences sentinel species in rapidly changing mountain ecosystems is particularly critical. Whereas effects of snow on food availability, energy expenditure, and predation are well documented, we report how avalanches exert major impacts...
Authors
Kevin White, Eran Hood, Gabriel Wolken, Erich H. Peitzsch, Yves Buhler, Katreen Wikstrom Jones, Chris Darimont
Black carp Mylopharyngodon piceus (Richardson, 1846) mouth gape and size preference of a bivalve prey Black carp Mylopharyngodon piceus (Richardson, 1846) mouth gape and size preference of a bivalve prey
Black carp Mylopharyngodon piceus (Richardson, 1846) have been widely used as biological control of snails in aquaculture and were imported to the United States in the 1970s and 1980s for this purpose. Prior research emphasizes the species’ propensity to control gastropods, but since subsequent escape and establishment of black carp in portions of the Mississippi River Basin, concerns...
Authors
Patrick Kroboth, Benjamin H. Stahlschmidt, Duane Chapman