Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 10361
Detection limits of quantitative and digital PCR assays and their influence in presence-absence surveys of environmental DNA Detection limits of quantitative and digital PCR assays and their influence in presence-absence surveys of environmental DNA
A set of universal guidelines is needed to determine the limit of detection (LOD) in PCR-based analyses of low concentration DNA. In particular, environmental DNA (eDNA) studies require sensitive and reliable methods to detect rare and cryptic species through shed genetic material in environmental samples. Current strategies for assessing detection limits of eDNA are either too stringent...
Authors
Margaret Hunter, Robert M. Dorazio, John S. Butterfield, Gaia Meigs-Friend, Leo Nico, Jason A. Ferrante
Response of imperiled Okaloosa darters to stream restoration Response of imperiled Okaloosa darters to stream restoration
The Okaloosa Darter Etheostoma okaloosae is a small percid endemic to six stream drainages in northwestern Florida. The U.S. Fish and Wildlife Service listed Okaloosa Darters as endangered in 1973 and downlisted them to threatened in 2011 because of habitat improvements and increasing abundance across much of their geographic range. Delisting is possible if remaining recovery criteria...
Authors
David B. Reeves, William B. Tate, Howard L. Jelks, Frank Jordan
Application of decision science to resilience management in Jamaica Bay Application of decision science to resilience management in Jamaica Bay
This book highlights the growing interest in management interventions designed to enhance the resilience of the Jamaica Bay socio-ecological system. Effective management, whether the focus is on managing biological processes or human behavior or (most likely) both, requires decision makers to anticipate how the managed system will respond to interventions (i.e., via predictions or...
Authors
Mitchell J. Eaton, Angela K. Fuller, Fred A. Johnson, M. P. Hare, Richard C. Stedman
Persistence and diversity of directional landscape connectivity improves biomass pulsing in expanding and contracting wetlands Persistence and diversity of directional landscape connectivity improves biomass pulsing in expanding and contracting wetlands
In flood-pulsed ecosystems, hydrology and landscape structure mediate transfers of energy up the food chain by expanding and contracting in area, enabling spatial expansion and growth of fish populations during rising water levels, and subsequent concentration during the drying phase. Connectivity of flooded areas is dynamic as waters rise and fall, and is largely determined by landscape
Authors
Simeon Yurek, Donald L. DeAngelis, Joel C. Trexler, Stephen Klassen, Laurel G. Larsen
Hydrologic restoration in a dynamic subtropical mangrove-to-marsh ecotone Hydrologic restoration in a dynamic subtropical mangrove-to-marsh ecotone
Extensive hydrologic modifications in coastal regions across the world have occurred to support infrastructure development, altering the function of many coastal wetlands. Wetland restoration success is dependent on the existence of hydrologic regimes that support development of appropriate soils and the growth and persistence of wetland vegetation. In Florida, United States, the...
Authors
Rebecca J. Howard, Richard H. Day, Ken W. Krauss, Andrew S. From, Larry K. Allain, Nicole Cormier
Hydrogeologic framework of LaSalle County, Illinois Hydrogeologic framework of LaSalle County, Illinois
Water-supply needs in LaSalle County in northern Illinois are met by surface water and groundwater. Water-supply needs are expected to increase to serve future residential and mining uses. Available information on water use, geology, surface-water and groundwater hydrology, and water quality provides a hydrogeologic framework for LaSalle County that can be used to help plan the future...
Authors
Robert T. Kay, Clinton R. Bailey
Optimization of a sample processing protocol for recovery of Bacillus anthracis spores from soil Optimization of a sample processing protocol for recovery of Bacillus anthracis spores from soil
Following a release of Bacillus anthracis spores into the environment, there is a potential for lasting environmental contamination in soils. There is a need for detection protocols for B. anthracis in environmental matrices. However, identification of B. anthracis within a soil is a difficult task. Processing soil samples helps to remove debris, chemical components, and biological...
Authors
Erin E. Silvestri, David Feldhake, Dale Griffin, John T. Lisle, Tonya L. Nichols, Sanjiv Shah, A Pemberton, Frank W Schaefer III
Decoupling processes and scales of shoreline morphodynamics Decoupling processes and scales of shoreline morphodynamics
Behavior of coastal systems on time scales ranging from single storm events to years and decades is controlled by both small-scale sediment transport processes and large-scale geologic, oceanographic, and morphologic processes. Improved understanding of coastal behavior at multiple time scales is required for refining models that predict potential erosion hazards and for coastal...
Authors
Cheryl J. Hapke, Nathaniel G. Plant, Rachel E. Henderson, William C. Schwab, Timothy R. Nelson
A multi-decade record of high-quality fCO2 data in version 3 of the Surface Ocean CO2 Atlas (SOCAT) A multi-decade record of high-quality fCO2 data in version 3 of the Surface Ocean CO2 Atlas (SOCAT)
The Surface Ocean CO2 Atlas (SOCAT) is a synthesis of quality-controlled f CO2 (fugacity of carbon dioxide) values for the global surface oceans and coastal seas with regular updates. Version 3 of SOCAT has 14.7 million f CO2 values from 3646 data sets covering the years 1957 to 2014. This latest version has an additional 4.6 million f CO2 values relative to version 2 and extends the...
Authors
Dorothee Bakker, Camilla S. Landa, Benjamin Pfeil, Nicolas Metzl, Kevin O’Brien, Are Olsen, Karl Smith, Cathy Cosca, Sumiko Harasawa, Shin-ichiro Nakaoka, Stephen Jones, Yukihiro Nojiri, Tobias Steinhoff, Colm Sweeney, Ute Schuster, Taro Takahashi, Bronte Tilbrook, Chisato Wada, Rik Wanninkhof, Simone R. Alin, Carlos F. Balestrini, Leticia Barbero, Nicholas Bates, Alejandro A. Bianchi, Frederic Bonou, Jacqueline Boutin, Yann Bozec, Eugene F. Burger, Wei-Jun Cai, Robert D. Castle, Liqi Chen, Melissa Chierici, Kim Currie, Wiley Evans, Charles Featherstone, Richard Feely, Agneta Fransson, Catherine Goyet, Naomi Greenwood, Luke Gregor, Steven C. Hankin, Nick J. Hardman-Mountford, Jerome Harlay, Judith Hauck, Mario Hoppema, Matthew P. Humphreys, Christopher W. Hunt, Betty Huss, J. Severino P. Ibanhez, Truls Johannessen, Ralph F. Keeling, Vassilis Kitidis, Arne Kortzinger, Alex Kozyr, Evangelia Krasakopoulou, Akira Kuwata, Peter Landschutzer, Siv K. Lauvset, Nathalie Lefevre, Claire Lo Monaco, Ansley Manke, Jeremy T. Mathis, Liliane Merlivat, Frank J. Millero, Pedro M. S. Monteiro, David R. Munro, Akihiko Murata, Timothy Newberger, Abdirahman M. Omar, Tsuneo Ono, Kristina Paterson, David Pearce, Denis Pierrot, Lisa L. Robbins, Shu Saito, Joe Salisbury, Reiner Schlitzer, Bernd Schneider, Roland Schweitzer, Rainer Sieger, Ingunn Skjelvan, Kevin F. Sullivan, Stewart C. Sutherland, Adrienne J. Sutton, Kazuaki Tadokoro, Maciej Telszewski, Matthias Tuma, Steven M. A. C. van Heuven, Douglas Vandemark, Brian Ward, Andrew J. Watson, Suqing Xu
Sources, distributions and dynamics of dissolved organic matter in the Canada and Makarov Basins Sources, distributions and dynamics of dissolved organic matter in the Canada and Makarov Basins
A comprehensive survey of dissolved organic carbon (DOC) and chromophoric dissolved organic matter (CDOM) was conducted in the Canada and Makarov Basins and adjacent seas during 2010–2012 to investigate the dynamics of dissolved organic matter (DOM) in the Arctic Ocean. Sources and distributions of DOM in polar surface waters were very heterogeneous and closely linked to hydrological...
Authors
Yuan Shen, Ronald Benner, Lisa L. Robbins, Jonathan Wynn
A landscape-scale assessment of above- and belowground primary production in coastal wetlands: Implications for climate change-induced community shifts A landscape-scale assessment of above- and belowground primary production in coastal wetlands: Implications for climate change-induced community shifts
Above- and belowground production in coastal wetlands are important contributors to carbon accumulation and ecosystem sustainability. As sea level rises, we can expect shifts to more salt-tolerant communities, which may alter these ecosystem functions and services. Although the direct influence of salinity on species-level primary production has been documented, we lack an understanding...
Authors
Camille L. Stagg, Donald R. Schoolmaster, Sarai C. Piazza, Gregg Snedden, Gregory D. Steyer, Craig J Fischenich, Robert W. McComas
Changes in phosphorus concentrations and loads in the Assabet River, Massachusetts, October 2008 through April 2014 Changes in phosphorus concentrations and loads in the Assabet River, Massachusetts, October 2008 through April 2014
Treated effluent discharged from municipal wastewater-treatment plants to the Assabet River in central Massachusetts includes phosphorus, which leads to increased growth of nuisance aquatic plants that decrease the river’s water quality and aesthetics in impounded reaches during the growing season. To improve the river’s water quality and aesthetics, the U.S. Environmental Protection...
Authors
Jennifer G. Savoie, Leslie A. DeSimone, John R. Mullaney, Marc J. Zimmerman, Marcus C. Waldron