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Publications

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: 171224

The ties that bind the sagebrush biome: Integrating genetic connectivity into range-wide conservation of greater sage-grouse

Conserving genetic connectivity is fundamental to species persistence, yet rarely is made actionable into spatial planning for imperilled species. Climate change and habitat degradation have added urgency to embrace connectivity into networks of protected areas. Our two-step process integrates a network model with a functional connectivity model, to identify population centres important to maintai
Authors
Todd B. Cross, Jason D. Tack, David E. Naugle, Michael D. Schwartz, Kevin E. Doherty, Sara J. Oyler-McCance, Ronald D. Pritchert, Brad C. Fedy

Unstructured-grid approach to develop high-fidelity groundwater model to understand groundwater flow and storage responses to excessive groundwater withdrawals in the Southern Hills aquifer system in southeastern Louisiana (USA)

Study regionThe Southern Hills aquifer system in the Louisiana Capital Area Groundwater Conservation District (CAGCD), USA.Study focusThe Southern Hills aquifer system provides abundant groundwater for public and industrial supplies in the CAGCD. Groundwater depletion, saltwater intrusion, and land subsidence are potential concerns due to prolonged excessive groundwater withdrawals. This study dev
Authors
Ye-Hong Chen, Hamid Vahdat-Aboueshagh, Frank T.-C. Tsai, Alyssa Dausman, Michael C. Runge

Observations of coastal circulation, waves, and sediment transport along West Maui, Hawaiʻi (November 2017– March 2018), and modeling effects of potential watershed restoration on decreasing sediment loads to adjacent coral reefs

Terrestrial sediment discharging from watersheds off West Maui, Hawaiʻi, has been documented as a primary stressor to local coral reefs, causing coral reef health to decline. The U.S. Geological Survey acquired and analyzed physical oceanographic and sedimentologic field data off the coast of West Maui to calibrate and validate physics-based, numerical hydrodynamic and sediment transport models of
Authors
Curt D. Storlazzi, Olivia M. Cheriton, Katherine M. Cronin, Luuk H. van der Heijden, Gundula Winter, Kurt J. Rosenberger, Joshua B. Logan, Robert T. McCall

Modeling post-wildfire hydrologic response: Review and future directions for applications of physically based distributed simulation

Wildfire is a growing concern as climate shifts. The hydrologic effects of wildfire, which include elevated hazards and changes in water quantity and quality, are increasingly assessed using numerical models. Post-wildfire application of physically based distributed models provides unique insight into the underlying processes that affect water resources after wildfire. This work reviews and synthe
Authors
Brian A. Ebel, Zachary M. Shephard, Michelle A. Walvoord, Sheila F. Murphy, Trevor Fuess Partridge, Kimberlie Perkins

Geothermal energy production adversely affects a sensitive indicator species within sagebrush ecosystems in western North America

Growing demand for renewable energy has resulted in expansion of energy infrastructure across sagebrush ecosystems of western North America. Geothermal power is an increasingly popular renewable energy source, especially within remote areas, but little is known about the impacts it may have on local wildlife populations. Investigations are warranted given similarities to more conventional surface
Authors
Peter S. Coates, Brian G. Prochazka, Shawn T. O'Neil, Sarah C. Webster, Shawn Espinosa, Mark A. Ricca, Steven R. Mathews, Michael L. Casazza, David J. Delehanty

Tracking status and trends in seven key indicators of stream health in the Chesapeake Bay watershed

“The Bay Connects us, the Bay reflects us” writes Tom Horton in the book “Turning the Tide—Saving the Chesapeake Bay”. The Chesapeake Bay watershed contains the largest estuary in the United States. The watershed stretches north to Cooperstown, New York, south to Lynchburg and Virginia Beach, Virginia, west to Pendleton County, West Virginia, and east to Seaford, Delaware, and Scranton, Pennsylvan
Authors
Samuel H. Austin, Matthew Joseph Cashman, John W. Clune, James E. Colgin, Rosemary M. Fanelli, Kevin P. Krause, Emily Majcher, Kelly O. Maloney, Chris A. Mason, Doug L. Moyer, Tammy M. Zimmerman

Vulnerability to climate change of managed stocks in the California Current large marine ecosystem

Introduction: Understanding how abundance, productivity and distribution of individual species may respond to climate change is a critical first step towards anticipating alterations in marine ecosystem structure and function, as well as developing strategies to adapt to the full range of potential changes.Methods: This study applies the NOAA (National Oceanic and Atmospheric Administration) Fishe
Authors
Michelle M McClure, Melissa A. Haltuch, Ellen Willis-Norton, David D. Huff, Elliott L. Hazen, Lisa G. Crozier, Michael G. Jacox, Mark W. Nelson, Kelly S. Andrews, Lewis A. K. Barnett, Aaron M. Berger, Sabrina Beyer, Joe Bizzarro, David A. Boughton, Jason M. Cope, Mark H. Carr, Heidi Dewar, Edward Dick, Dorval Emmanis, Jason B. Dunham, Vladlena Gertseva, Correigh M. Greene, Richard G. Gustafson, Hamel Owen S., Chris J. Harvey, Mark J. Henderson, Chris E. Jordan, Isaac C. Kaplan, Steven T. Lindley, Nathan J. Mantua, Sean E. Matson, Melissa H. Monk, Peter B. Moyle, Colin L Nicol, John Pohl, Ryan R. Rykaczewski, Jameal F. Samhouri, Susan Sogard, Nick Tolimieri, John Wallace, Chantel Wetzel, Steven J. Bograd

Qualitative value of information provides a transparent and repeatable method for identifying critical uncertainty

Conservation decisions are often made in the face of uncertainty because the urgency to act can preclude delaying management while uncertainty is resolved. In this context, adaptive management is attractive, allowing simultaneous management and learning. An adaptive program design requires the identification of critical uncertainties that impede the choice of management action. Quantitative evalua
Authors
Michelle L Stantial, Abigail Jean Lawson, Auriel M.V. Fournier, Peter J. Kappes, Chelsea S. Kross, Michael C. Runge, Mark S. Woodrey, James E. Lyons

An examination of soil crusts on the floor of Jezero crater, Mars

Martian soils are critically important for understanding the history of Mars, past potentially habitable environments, returned samples, and future human exploration. This paper examines soil crusts on the floor of Jezero crater encountered during initial phases of the Mars 2020 mission. Soil surface crusts have been observed on Mars at other locations, starting with the two Viking Lander missions
Authors
E. M. Hausrath, C. T. Adcock, A. Bechtold, P. S. A. Beck, K. Benison, A. Brown, E. L. Cardarelli, N. A. Carman, B. Chide, J. Christian, B. C. Clark, E. Cloutis, A. Cousin, O. Forni, Travis S. J. Gabriel, O. Gasnault, M. P. Golombek, F. Gomez, M. H. Hecht, T. L. J. Henley, J. Huidobro, J. C. Johnson, M. W. M. Jones, P. B. Kelemen, A. Knight, J. A. Lasue, S. Le Mouelic, J. M. Madariaga, J. N. Maki, L. Mandon, G. Martinez, J. Martinez-Frias, T. H. McConnochie, P. -Y. Meslin, M. -P. Zorzano, H. Newsom, G. Paar, N. Randazzo, C. Royer, S. Siljestroem, M. E. Schmidt, S. Schroeder, M. A. Sephton, R. Sullivan, N. Turenne, A. Udry, S. VanBommel, A. Vaughan, R. C. Wiens, N. Williams

Spatial and temporal analysis of geologic slip rates, Cucamonga Fault, California, USA: Implications for along-strike applications and multi-fault rupture

To constrain fault processes and hazard, fault slip rates may be extrapolated over different fault lengths or time intervals. Here, we investigate slip rates for the Cucamonga Fault (CF). The CF is located at the junction of the Transverse Range fault system with the San Andreas and San Jacinto Faults, and it is hypothesized to connect with these faults, promoting the propagation of large, multi-f
Authors
Devin McPhillips, Katherine Scharer

The 2013−2020 seismic activity at Sabancaya Volcano (Peru): Long lasting unrest and eruption

Sabancaya volcano is the youngest and second most active volcano in Peru. It is part of the Ampato-Sabancaya volcanic complex which sits to the south of the ancient Hualca Hualca volcano and several frequently active faults, thus resulting in complex volcano-tectonic interactions. After 15 years of repose, in 2013, a series of 4 earthquakes with magnitude >4.5 occurred within 24 h, marking the beg
Authors
Roger Machacca, P. Lesage, H. Tavera, J. Pesicek, C. Caudron, J.L. Torres, N. Puma, K. Vargas, I. Lazarte, M. Rivera, Alain Burgisser

Pelagic food web interactions in a large invaded ecosystem: Implications for reintroducing a native top predator

A series of species introductions, overexploitation, and habitat modification preceded the extirpation of Lahontan cutthroat trout (Oncorhynchus clarkii henshawi; LCT), historically the apex predator, from Lake Tahoe, California-Nevada, USA. Studies evaluating limiting factors for LCT emphasise the need to elucidate food web interactions, yet important knowledge gaps regarding trophic interactions

Authors
Adam G. Hansen, Allison McCoy, Gary P. Thiede, David Beauchamp