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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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Knowledge sharing for shared success in the decade on ecosystem restoration Knowledge sharing for shared success in the decade on ecosystem restoration
The Decade on Ecosystem Restoration aims to provide the means and incentives for upscaling restoration efforts worldwide. Although ecosystem restoration is a broad, interdisciplinary concept, effective ecological restoration requires sound ecological knowledge to successfully restore biodiversity and ecosystem services in degraded landscapes.We emphasize the critical role of knowledge...
Authors
Emma Ladouceur, Nancy Shackelford, Karma Bouazza, Lars Brudvig, Anna Bucharova, Timo Conradi, Todd E. Erickson, Magda Garbowski, Kelly Garvy, W. Stanley Harpole, Holly P. Jones, Tiffany Knight, Mlungele M. Nsikani, Gustavo B. Paterno, Katharine Suding, Vicky M. Temperton, Peter Torok, Daniel E. Winkler, Johnathan M. Chase
Matching of resource use and investment according to waterbody size in recreational fisheries Matching of resource use and investment according to waterbody size in recreational fisheries
The size of an ecosystem affects ecological interactions, but less is known about how ecosystem size may affect social interactions. We posit that ecosystem size could serve as a basis for understanding and contextualizing social interactions, connecting how ecosystem size influences natural resource investment decisions and the use of ecosystem services. We leverage international...
Authors
M.A. Kaemingk, R. Arlinghaus, M.H. Birdsong, C.J. Chizinski, R. Lyach, K.L. Wilson, Kevin L. Pope
Pathways for avian influenza virus spread: GPS reveals wild waterfowl in commercial livestock facilities and connectivity with the natural wetland landscape Pathways for avian influenza virus spread: GPS reveals wild waterfowl in commercial livestock facilities and connectivity with the natural wetland landscape
Zoonotic diseases are of considerable concern to the human population and viruses such as avian influenza (AIV) threaten food security, wildlife conservation and human health. Wild waterfowl and the natural wetlands they use are known AIV reservoirs, with birds capable of virus transmission to domestic poultry populations. While infection risk models have linked migration routes and AIV...
Authors
Fiona McDuie, Elliott Matchett, Diann J. Prosser, John Y. Takekawa, Maurice E. Pitesky, Austen Lorenz, Madeline M McCuen, Cory T. Overton, Joshua T. Ackerman, Susan E.W. De La Cruz, Michael L. Casazza
Broadscale population structure and hatchery introgression of Midwestern brook trout: Midwestern brook trout population genetics Broadscale population structure and hatchery introgression of Midwestern brook trout: Midwestern brook trout population genetics
Brook Trout Salvelinus fontinalis have faced significant declines throughout their native range and have been stocked in Midwestern waters since the late 1800s to offset such losses. Several studies have investigated the genetic effects of these stockings, but these efforts have been confined to relatively small spatial scales. In this study, we compiled 8,454 Brook Trout microsatellite...
Authors
Bradley Erdman, Matthew G. Mitro, Joanna D.T. Griffin, David Rowe, David C. Kazyak, Keith Turnquist, Michael Siepker, Loren Miller, Wendylee Stott, Michael Hughes, Brian Sloss, Michael T. Kinnison, Wesley Larson
Kirtland’s Warbler breeding productivity and habitat use in red pine-dominated habitat in Wisconsin, USA Kirtland’s Warbler breeding productivity and habitat use in red pine-dominated habitat in Wisconsin, USA
During the breeding season, Kirtland’s Warblers (Setophaga kirtlandii) are strongly associated with young jack pine (Pinus banksiana) forests in northern Lower Michigan, USA. Since 2007, the species has been breeding in unusual habitat, red pine (Pinus resinosa) dominated plantations, in central Wisconsin, USA. Kirtland’s Warbler productivity and habitat use in red pine is not well...
Authors
Ashley Olah, Christine Ribic, Kim Grveles, Sarah Warner, Davin Lopez, Anna Pidgeon
Relative bias in catch among long-term fish monitoring surveys within the San Francisco Estuary Relative bias in catch among long-term fish monitoring surveys within the San Francisco Estuary
Fish monitoring gears rarely capture all available fish, an inherent bias in monitoring programs referred to as catchability. Catchability is a source of bias that can be affected by numerous aspects of gear deployment (e.g., deployment speed, mesh size, and avoidance behavior). Thus, care must be taken when multiple surveys—especially those using different sampling methods—are combined...
Authors
Brock M. Huntsman, Brian Mahardja, Samuel M. Bashevkin
Review of “Lake hydrology: An introduction to lake mass balance” Review of “Lake hydrology: An introduction to lake mass balance”
No abstract available.
Authors
D.O. Rosenberry
Whooping crane stay length in relation to stopover site characteristics Whooping crane stay length in relation to stopover site characteristics
Whooping crane (Grus americana) migratory stopovers can vary in length from hours to more than a month. Stopover sites provide food resources and safety essential for the completion of migration. Factors such as weather, climate, demographics of migrating groups, and physiological condition of migrants influence migratory movements of cranes (Gruidae) to varying degrees. However, little...
Authors
Andrew J. Caven, Aaron T. Pearse, David A. Brandt, Mary J. Harner, Greg D. Wright, David M. Baasch, Emma M. Brinley Buckley, Kristine L. Metzger, Matthew R Rabbe, Anne E Lacy
Maybe so, maybe not: Canis lepophagus at Hagerman Fossil Beds National Monument, Idaho, USA Maybe so, maybe not: Canis lepophagus at Hagerman Fossil Beds National Monument, Idaho, USA
A canid dentary is described from the Pliocene Glenns Ferry Formation at Hagerman Fossil Beds National Monument, south-central Idaho, USA. The specimen possesses traits in alliance with and measurements falling within or exceeding those of Canis lepophagus. The dentary, along with a tarsal IV (cuboid) and an exploded canine come from the base of the fossiliferous Sahara complex within...
Authors
Kari A Prassack, Laura Walkup
Seismic site characterization with shear wave (SH) reflection and refraction methods Seismic site characterization with shear wave (SH) reflection and refraction methods
Reflection and critically refracted seismic methods use traveltime measurements of body waves propagating between a source and a series of receivers on the ground surface to calculate subsurface velocities. Body wave energy is refracted or reflected at boundaries where there is a change in seismic impedance, defined as the product of material density and seismic velocity. This article...
Authors
James A. Hunter, Heather L. Crow, William J. Stephenson, Andre J.-M. Pugin, Robert Williams, James B. Harris, Jackson K. Odum, Edward W Woolery
Evolution and taxonomy of the Paleogene calcareous nannofossil genus Hornibrookina Evolution and taxonomy of the Paleogene calcareous nannofossil genus Hornibrookina
The genus Hornibrookina consists of enigmatic calcareous nannofossils that first appeared shortly after the K-Pg mass extinction. Due to their relative paucity in most published sections, specimens of this genus have not been previously studied in detail and their paleobiogeographic preferences and evolutionary history have been poorly understood. Biostratigraphic and morphometric...
Authors
Jean Self-Trail, David K. Watkins, James J. Pospichal, Ellen Seefelt
Analysis of ocean dynamics during the impact of Hurricane Matthew using ocean-atmosphere coupling Analysis of ocean dynamics during the impact of Hurricane Matthew using ocean-atmosphere coupling
The main goal of this investigation is to improve the understanding of ocean-atmosphere coupling during hurricanes. The present work involves the integration of the ocean-atmosphere coupled components of the Coupled Ocean-Atmosphere-Wave-Sediment Transport Modeling System in the Very Short Term Prediction System (SisPI). Three experiments are performed: First, using a dynamic sea surface
Authors
Liset Vazquez Proveyer, Maibys Sierra Lorenzo, Roberto Carlos Cruz Rodriguez, John C. Warner