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.
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Juxtaposition of intensive agriculture, vulnerable aquifers, and mixed chemical/microbial exposures in private-well tapwater in northeast Iowa Juxtaposition of intensive agriculture, vulnerable aquifers, and mixed chemical/microbial exposures in private-well tapwater in northeast Iowa
In the United States and globally, contaminant exposure in unregulated private-well point-of-use tapwater (TW) is a recognized public-health data gap and an obstacle to both risk-management and homeowner decision making. To help address the lack of data on broad contaminant exposures in private-well TW from hydrologically-vulnerable (alluvial, karst) aquifers in agriculturally-intensive...
Authors
Paul M. Bradley, Dana W. Kolpin, Darrin A. Thompson, Kristin M. Romanok, Kelly L. Smalling, Sara E. Breitmeyer, Mary C. Cardon, David M. Cwiertny, Nicola Evans, R. William Field, Michael J. Focazio, Laura E. Beane Freeman, Carrie E. Givens, James L. Gray, Gordon L. Hager, Michelle L. Hladik, Jonathan N. Hoffman, Rena R. Jones, Leslie K. Kanagy, Rachael F. Lane, R. Blaine McCleskey, Danielle Medgyesi, Elizabeth Medlock-Kakaley, Shannon M. Meppelink, Michael T. Meyer, Diana A. Stavreva, Mary H. Ward
Physicochemical coastal groundwater dynamics between Kauhakō Crater lake and Kalaupapa settlement, Moloka‘i, Hawai‘i Physicochemical coastal groundwater dynamics between Kauhakō Crater lake and Kalaupapa settlement, Moloka‘i, Hawai‘i
Land-based sources of groundwater pollution can be a critical threat to coral reefs, and a better understanding of “ridge-to-reef” water movement is required to advance management and coral survival in the Anthropocene. In this study a more complete understanding of the geological, atmospheric, and oceanic drivers behind coastal groundwater exchange on the Kalaupapa peninsula, on Moloka...
Authors
Ferdinand K.J. Oberle, Olivia M. Cheriton, Peter W Swarzenski, Eric K. Brown, Curt D. Storlazzi
Subaqueous clinoforms created by sandy wave-supported gravity flows: Lessons from the central California shelf Subaqueous clinoforms created by sandy wave-supported gravity flows: Lessons from the central California shelf
Subaqueous clinoforms are an important yet underappreciated shelf feature. Their origins are typically associated with subaerial deltas but recent work has identified similar features in settings without a significant fluvial source. These other studies have shown that such subaqueous clinoforms, also known as infralittoral prograding wedges (IPWs), are created largely by wave-induced...
Authors
Elisa Medri, Alexander R. Simms, Jared W. Kluesner, Samuel Y. Johnson, Stuart P. Nishenko, H. Gary Greene, James E. Conrad
Hydrodynamics and habitat interact to structure fish communities within terminal channels of a tidal freshwater delta Hydrodynamics and habitat interact to structure fish communities within terminal channels of a tidal freshwater delta
Terminal channels were historically a common feature of tidal delta ecosystems but have become increasingly rare as landscapes have been modified. Tidal hydrodynamics are a defining feature in tidal terminal channel ecosystems from which native aquatic communities have evolved. However, few studies have explored the relationship between fish community structure and hydrodynamics in these...
Authors
Brock Huntsman, Matthew J. Young, Frederick V. Feyrer, Paul Stumpner, Larry R. Brown, Jon R. Burau
Enhancements to population monitoring of Yellowstone grizzly bears Enhancements to population monitoring of Yellowstone grizzly bears
In the Greater Yellowstone Ecosystem, counts of female grizzly bears (Ursus arctos) with cubs-of-the-year (females with cubs) from systematic aerial surveys and opportunistic ground sightings are combined with demographic data to derive annual population estimates. We addressed 2 limitations to the monitoring approach. As part of a rule set, a conservative distance of >30 km currently is...
Authors
Frank T. van Manen, Michael Ebinger, Cecily M. Costello, Daniel D. Bjornlie, Justin Clapp, Daniel Thompson, Mark A. Haroldson, Kevin L. Frey, Curtis Hendricks, Jeremy M. Nicholson, Kerry A. Gunther, Katharine R. Wilmot, Hilary Cooley, Jennifer Fortin-Noreus, Pat Hnilicka, Daniel B. Tyers
Genetic diversity goals and targets have improved, but remain insufficient for clear implementation of the post-2020 global biodiversity framework Genetic diversity goals and targets have improved, but remain insufficient for clear implementation of the post-2020 global biodiversity framework
Genetic diversity among and within populations of all species is necessary for people and nature to survive and thrive in a changing world. Over the past three years, commitments for conserving genetic diversity have become more ambitious and specific under the Convention on Biological Diversity’s (CBD) draft post-2020 global biodiversity framework (GBF). This Perspective article...
Authors
Sean M. Hoban, Michael W. Bruford, Jessica M. da Silva, W. Chris Funk, Richard Frankham, Michael J. Gill, Catherine E. Grueber, Myriam Heuertz, Margaret Hunter, Francine Kershaw, Robert C. Lacy, Caroline Lees, Margarida Lopes-Fernandes, Anna J. MacDonald, Alicia Mastretta-Yanes, Philip J. K. McGowan, Mariah H. Meek, Joachim Mergeay, Katie L. Millette, Cinnamon S. Mittan-Moreau, Laetitia M. Navarro, David O'Brien, Rob Ogden, Gernot Segelbacher, Ivan Paz-Vinas, Cristiano Vernesi, Linda Laikre
Watershed- and reach-scale drivers of phosphorus retention and release by streambed sediment in a western Lake Erie watershed during summer Watershed- and reach-scale drivers of phosphorus retention and release by streambed sediment in a western Lake Erie watershed during summer
Reducing phosphorus (P) concentrations in aquatic ecosystems, is necessary to improve water quality and reduce the occurrence of harmful cyanobacterial algal blooms. Managing P reduction requires information on the role rivers play in P transport from land to downstream water bodies, but we have a poor understanding of when and where river systems are P sources or sinks. During the...
Authors
Rebecca M. Kreiling, Patrik Mathis Perner, Kenna Jean Breckner, Tanja N. Williamson, Lynn A. Bartsch, James M. Hood, Nathan F. Manning, Laura T. Johnson
Influence of fine-scale habitat characteristics on sage-grouse nest site selection and nest survival varies by mesic and xeric site conditions Influence of fine-scale habitat characteristics on sage-grouse nest site selection and nest survival varies by mesic and xeric site conditions
Resource managers and scientists across western U.S. agencies seek methodologies for identifying environmental attributes important to both wildlife conservation and broad-scale land stewardship. The Greater Sage-Grouse (Centrocercus urophasianus; hereafter, sage-grouse) exemplifies a species in need of this broad-scale approach given widespread population declines that have resulted...
Authors
Brianne E. Brussee, Peter S. Coates, Shawn T. O’Neil, Mark A. Ricca, Jonathan E. Dudko, Shawn P. Espinosa, Scott C. Gardner, Michael L. Casazza, David J. Delehanty
Dissolved carbon export by large river systems is influenced by source area heterogeneity Dissolved carbon export by large river systems is influenced by source area heterogeneity
Rivers and streams export inorganic and organic carbon derived from contributing landscapes and so downstream carbon fluxes are important quantitative indicators of change in ecosystem function and for the full accounting of terrestrial carbon budgets. Carbon concentration-discharge (C-Q) relationships in rivers provide important information about carbon source and behavior in watersheds...
Authors
Edward G. Stets, Robert G. Striegl, Kimberly Wickland, Mark Dornblaser, Sydney Foks
Genetic diversity and connectivity of moose (Alces americanus americanus) in eastern North America Genetic diversity and connectivity of moose (Alces americanus americanus) in eastern North America
Genetic diversity is critical to a population’s ability to overcome gradual environment change. Large-bodied wildlife existing in regions with relatively high human population density are vulnerable to isolation-induced genetic drift, population bottlenecks, and loss of genetic diversity. Moose (Alces americanus americanus) in eastern North America have a complex history of drastic...
Authors
Elias Rosenblatt, Katherina Gieder, Therese M. Donovan, James Murdoch, Timothy P.L. Smith, Stephanie McKay, Michael P. Heaton, Theodore S. Kalbfleisch, Brenda M. Murdoch, Suraj Bhattarai, Emory Pacht, Emma Verbist, Veronica Basnayake, Stephanie McKay
Changes in habitat suitability for wintering dabbling ducks during dry conditions in the Central Valley of California Changes in habitat suitability for wintering dabbling ducks during dry conditions in the Central Valley of California
In arid and Mediterranean regions, landscape-scale wetland conservation requires understanding how wildlife responds to dynamic freshwater availability and conservation actions to enhance wetland habitat. Taking advantage of Landsat satellite data and structured and community science bird survey data, we built species distribution models to describe how three duck species, the Northern...
Authors
Erin E. Conlisk, Kristin B. Byrd, Elliott Matchett, Austen Lorenz, Michael L. Casazza, Gregory H. Golet, Mark D. Reynolds, Kristin A. Sesser, Matthew E. Reiter
Nest-site selection model for endangered Everglade snail kites to inform ecosystem restoration Nest-site selection model for endangered Everglade snail kites to inform ecosystem restoration
dictors of nesting for snail kites in south Florida. The results of our modeling indicate that hydrology, percent canopy cover, and proximity to recently burned areas were the most important factors associated with nest-site selection for snail kites. Water depths between 75 and 100 cm, water recession rates between 0 and 1.25 cm/day, percent canopy covers
Authors
Allison Benscoter, Laura D’Acunto, Saira M. Haider, Robert J. Fletcher, Stephanie Romanach