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Browse more than 160,000 publications authored by our scientists over the past 100+ year history of the USGS.  Publications available are: USGS-authored journal articles, series reports, book chapters, other government publications, and more.

Filter Total Items: 171140

Sediment-ecological connectivity in a large river network

Sediment eroded from the headwaters of a large basin strongly influences channels and ecosystems far downstream, but the connection is often difficult to trace. Disturbance-dependent riparian trees are thought to rely primarily on floods for formation of the sand bars necessary for seedling establishment, but pulses of sediment should also promote formation of such features. In order to expand und
John T. Kemper, R. D. Thaxton, Sara L. Rathburn, J. M. Friedman, Erich R. Mueller, Michael L. Scott

Grassification and fast-evolving fire connectivity and risk in the Sonoran Desert, United States

In the southwestern United States, non-native grass invasions have increased wildfire occurrence in deserts and the likelihood of fire spread to and from other biomes with disparate fire regimes. The elevational transition between desertscrub and montane grasslands, woodlands, and forests generally occurs at ∼1,200 masl and has experienced fast suburbanization and an expanding wildland-urban inter
Benjamin T. Wilder, Catherine S. Jarnevich, Elizabeth Baldwin, Joseph S. Black, Kim A. Franklin, Perry Grissom, Katherine Hovanes, Aaryn Olsson, Jim Malusa, Abu S.M.G. Kibria, Yue M. Li, Aaron M. Lien, Alejandro Ponce, Julia A. Rowe, Jose Soto, Maya Stahl, Nicholas Young, Julio L. Betancourt

Quantifying non-thermal silicate weathering using Ge/Si and Si isotopes in rivers draining the Yellowstone Plateau Volcanic Field, USA

In active volcanic regions, high-temperature chemical reactions in the hydrothermal system consume CO2 sourced from magma or from the deep crust, whereas reactions with silicates at shallow depths mainly consume atmospheric CO2. Numerous studies have quantified the load of dissolved solids in rivers that drain volcanic regions to determine chemical weathering rates and atmospheric CO2 consumption
François Gaspard, Sophie Opfergelt, Catherine Hirst, Shaul Hurwitz, R. Blaine McCleskey, Petra Zahajska, Daniel J. Conley, Pierre Delmelle

Next-generation lampricides: A three-stage process to develop improved control tools for invasive sea lamprey

Successful integrated management of the invasive predatory sea lamprey (Petromyzon marinus) in the Laurentian Great Lakes of North America is owed largely to the long history of beneficial use of two lampricides: 3-trifluoromethyl-4-nitrophenol (TFM) and 2′,5-dichloro-4′-nitrosalicylanilide (niclosamide). Ensuring continued successful sea lamprey control necessitates consideration of possible next
Steve Lantz, Bob Adair, Jon Amberg, Roger A. Bergstedt, Michael A. Boogaard, Ugo Bussy, Margaret F. Docker, Erin S. Dunlop, Alex Gonzalez, Terrance Hubert, Michael J. Siefkes, Paul Sullivan, Steve Whyard, Michael P. Wilkie, Bradley Young, Andrew M. Muir

Effects of culvert construction on streams and macroinvertebrate communities at selected sites in the East Gulf Coastal Plain of Alabama, 2010–19

The U.S. Geological Survey, in cooperation with the Alabama Department of Transportation, evaluated the role of culvert construction in altering streams and habitats of benthic macroinvertebrate communities at selected study sites in the northern East Gulf Coastal Plain of Alabama during 2011–19. Analysis included examinations of changes in stream channel geometry, suspended sediment, turbidity, a
Aaron L. Pugh, Amy C. Gill

The effects of management practices on grassland birds—Grasshopper Sparrow (Ammodramus savannarum)

The key to Grasshopper Sparrow (Ammodramus savannarum) management is providing large areas of contiguous grassland of intermediate height with moderately deep litter and low shrub density. Grasshopper Sparrows have been reported to use habitats with 8–166 centimeters (cm) average vegetation height, 4–80 cm visual obstruction reading, 12–95 percent grass cover, 4–40 percent forb cover, less than 35
Jill A. Shaffer, Lawrence D. Igl, Douglas H. Johnson, Marriah L. Sondreal, Christopher M. Goldade, Melvin P. Nenneman, Travis L. Wooten, Betty R. Euliss

Experiences in LP-IoT: EnviSense deployment of remotely reprogrammable environmental sensors

The advent of Low Power Wide Area Networks (LPWAN) has improved the feasibility of wireless sensor networks for environmental sensing across wide areas. We have built EnviSense, an ultra-low power environmental sensing system, and deployed over a dozen of them across two locations in Northern California for hydrological monitoring applications with the U.S. Geological Survey (USGS). This paper det
Reese Grimsley, Mathieu D. Marineau, Robert A. Iannucci

Temperature-based modeling of incubation period to protect loggerhead hatchlings on an urban beach in Northwest Florida

Sea turtle hatchlings face many natural and anthropogenic threats during their short journey to the water after emerging from nests. Reducing hatchling mortality is critical to population recovery of imperiled sea turtle species; however, protecting hatchlings is particularly challenging on beaches degraded by human development and disturbances, including artificial lighting. Managers need practic
Kennard P. Watson, Margaret Lamont

Tracking secondary lahar flow paths and characterizing pulses and surges using infrasound array networks at Volcán de Fuego, Guatemala

Lahars are one of the greatest hazards at many volcanoes, including Volcán de Fuego (Guatemala). On 1 December 2018 at 8:00pm local Guatemala time (2:00:00 UTC), an hour-long lahar event was detected at Volcán de Fuego by two permanent seismo-acoustic stations along the Las Lajas channel on the southeast side. To establish the timing, duration, and speed of the lahar, infrasound array records were
Ashley Bosa, Jeffery Johnson, Silvio DeAngelis, John J. Lyons, Amilcar Roca, Jacob Anderson, Armando Pineda

Establishing the foundation for the global observing system for marine life

Maintaining healthy, productive ecosystems in the face of pervasive and accelerating human impacts including climate change requires globally coordinated and sustained observations of marine biodiversity. Global coordination is predicated on an understanding of the scope and capacity of existing monitoring programs, and the extent to which they use standardized, interoperable practices for data ma
Erin V. Satterthwaite, Nicholas J. Bax, Patricia Miloslavich, Lavenia Ratnarajah, Gabrielle Canonico, Daniel Dunn, Samantha E. Simmons, Roxanne J. Carini, Karen Evans, Valerie Allain, Ward Appeltans, Sonia Batten, Lisandro Benedetti-Cecchi, Anthony T. F. Bernard, R. Sky Bristol, Abigail Benson, Pier Luigi Buttigieg, Leopoldo Cavaleri Gerhardinger, Sanae Chiba, Tammy E. Davies, J. Emmett Duffy, Alfredo Giron-Nava, Astrid J. Hsu, Alexandra C. Kraberg, Raphael M. Kudela, Dan Lear, Enrique Montes, Frank Muller-Karger, Todd D. O'Brien, David Obura, Pieter Provoost, Sara Pruckner, Lisa-Maria Rebelo, Elizabeth R. Selig, Olav Sigurd Kjesbu, Craig Starger, Rick D. Stuart-Smith, Marjo Vierros, John S. Waller, Lauren V. Weatherdon, Tristan Wellman, Anna Zivian

Evaluation of a “trace” plant density score in LTRM vegetation monitoring

The Long Term Resource Monitoring (LTRM) element of the Upper Mississippi River Restoration program employs a harvest method for sampling submersed aquatic vegetation (SAV) whereby a rake is dragged ~1.5 m over the substrate and plant materials are retrieved.  “Plant density” (PD) scores indicate SAV abundance and are based on the amount of plant material collected on the teeth of the rake.  Stand
Deanne C. Drake, Eric Lund, Kyle Bales

Antimicrobial resistance: Wildlife as indicators of anthropogenic environmental contamination across space and through time

Prior assessments support wildlife as indicators of anthropogenically influenced antimicrobial resistance across the landscape. A ground-breaking new study suggests that wildlife may also provide information on antimicrobial resistance in the environment through time.
Andrew M. Ramey