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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.

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We are focused on some of the most significant issues society faces, and our science is making a substantial contribution to the well-being of the Nation and the world. Learn more about the major topics our research covers and the programs focused on those topics.

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Filter Total Items: 175939

Riverine dissolved organic matter transformations increase with watershed area, water residence time, and Damköhler numbers in nested watersheds Riverine dissolved organic matter transformations increase with watershed area, water residence time, and Damköhler numbers in nested watersheds

Quantifying the relative influence of factors and processes controlling riverine ecosystem function is essential to predicting future conditions under global change. Dissolved organic matter (DOM) is a fundamental component of riverine ecosystems that fuels microbial food webs, influences nutrient and light availability, and represents a significant carbon flux globally. The...
Authors
Kevin Alexander Ryan, Vanessa Garayburu-Caruso, Byron Crump, Ted Bambakidis, Peter Raymond, Shaoda Liu, James Stegen
By
Water Resources Mission Area, New York Water Science Center

It's about time: A multistate semicontinuous time mark–recapture model to evaluate seasonal survival and movement rates of juvenile Coho Salmon in a small coastal watershed It's about time: A multistate semicontinuous time mark–recapture model to evaluate seasonal survival and movement rates of juvenile Coho Salmon in a small coastal watershed

Objective Many mark–recapture models assume that releases and recaptures are discrete events, and researchers often aggregate continuous recapture data (e.g., passive integrated transponder [PIT] detections) into coarse temporal scales to satisfy this assumption. This temporal discretization could result in parameter biases by ignoring the individual heterogeneity in the time susceptible...
Authors
Nicholas P. Van Vleet, Darren Ward, Nicholas A. Som, Daniel C. Barton, Colin Anderson, Mark J. Henderson
By
Cooperative Research Units

A heuristic method to evaluate consequences for flight control and stability induced by attachment of biologging devices to birds and bats A heuristic method to evaluate consequences for flight control and stability induced by attachment of biologging devices to birds and bats

Biologging is central to the study of wildlife, but questions remain about the minimization of effects of biologging devices. Rarely considered are changes biologging devices induce on an animal's centre of mass (COM) and resulting losses of flight control and stability.We applied established aeronautical principles to estimate how the COM of a flying bird or bat may be affected by the...
Authors
Todd E. Katzner, George Young
By
Ecosystems Mission Area, Forest and Rangeland Ecosystem Science Center

In-situ valve opening response of eastern oysters to estuarine conditions In-situ valve opening response of eastern oysters to estuarine conditions

High-frequency recordings of valve opening behavior (VOB) in bivalves are often used to detect changes in environmental conditions. However, generally a single variable such as temperature or the presence of toxicants in the water is the focus. A description of routine VOB under non-stressful conditions is also important for interpreting responses to environmental changes. Here we...
Authors
Romain Lavaud, Stephanie K. Archer, Megan K. La Peyre, Finella M. Campanino, Sandra M. Casas, Jerome F. La Peyre
By
Cooperative Research Units

The Amazon Basin’s rivers and lakes support Nearctic-breeding shorebirds during southward migration The Amazon Basin’s rivers and lakes support Nearctic-breeding shorebirds during southward migration

Identifying the migration routes and stopover sites used by declining species is critical for developing targeted conservation actions. Long-distance migratory shorebirds are among the groups of birds declining most rapidly, yet we frequently lack detailed knowledge about the routes and stopover sites they use during their hemisphere-spanning migrations. This is especially true for...
Authors
Jennifer A. Linscott, Enzo Basso, Rosalyn Bathrick, Juliana Bosi de Almeida, Alexandra Anderson, Fernando Angulo-Pratolongo, Bart M Ballard, Joël Bêty, Stephen Brown, Katherine S. Christie, Sarah J. Clements, Christian Friis, Callie Gesmundo, Marie-Andree Giroux, Autumn-Lynn Harrison, Christopher M. Harwood, Jason M. Hill, James A. Johnson, Bart Kempenaers, Benoit Laliberte, Jean-François Lamarre, Richard B. Lanctot, Christopher Latty, Nicolas Lecomte, Laura Anne McDuffie, Juan G. Navedo, Erica Nol, Zachary M. Pohlen, Jennie Rausch, R.B. Renfrew, Jorge Ruiz, Mike Russell, Daniel R. Ruthrauff, Sarah T. Saalfeld, Brett K. Sandercock, Shiloh A. Schulte, Paul A Smith, Audrey R. Taylor, T. Lee Tibbitts, Mihai Valcu, Mitch D. Weegman, James R. Wright, Nathan R. Senner
By
Alaska Science Center

Comparison of imaging flow cytometry and microscopy for freshwater algal bloom detection Comparison of imaging flow cytometry and microscopy for freshwater algal bloom detection

Imaging flow cytometry (IFC) is an emerging tool that allows for rapid identification and enumeration of phytoplankton in freshwater systems. However, few studies have assessed the effects of preservation on IFC results or compared live IFC and microscopy results in freshwater systems. Understanding the effects of preservation and differences between IFC and microscopy will improve...
Authors
Sabina R. Gifford, A. St. Amand, Jennifer L. Graham, Guy M. Foster, Cory Sauve, Denise Clark, Hannah Schroeder-Larkins
By
Water Resources Mission Area, New York Water Science Center
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