Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 10380
Spatial configuration trends in coastal Louisiana from 1985 to 2010 Spatial configuration trends in coastal Louisiana from 1985 to 2010
From 1932 to 2010, coastal Louisiana has experienced a net loss of 4877 km2 of wetlands. As the area of these wetlands has changed, so too has the spatial configuration of the landscape. The resulting landscape is a mosaic of patches of wetlands and open water. This study examined the spatial and temporal variability of trajectories of landscape configuration and the relation of those...
Authors
Brady Couvillion, Michelle Fischer, Holly J. Beck, William J. Sleavin
Visual Basic, Excel-based fish population modeling tool - The pallid sturgeon example Visual Basic, Excel-based fish population modeling tool - The pallid sturgeon example
The model presented in this report is a spreadsheet-based model using Visual Basic for Applications within Microsoft Excel (http://dx.doi.org/10.5066/F7057D0Z) prepared in cooperation with the U.S. Army Corps of Engineers and U.S. Fish and Wildlife Service. It uses the same model structure and, initially, parameters as used by Wildhaber and others (2015) for pallid sturgeon. The...
Authors
Edward H. Moran, Mark L. Wildhaber, Nicholas S. Green, Janice L. Albers
Aerobic biodegradation potential of endocrine disrupting chemicals in surface-water sediment at Rocky Mountains National Park, USA Aerobic biodegradation potential of endocrine disrupting chemicals in surface-water sediment at Rocky Mountains National Park, USA
Endocrine disrupting chemicals (EDC) in surface water and bed sediment threaten the structure and function of aquatic ecosystems. In natural, remote, and protected surface-water environments where contaminant releases are sporadic, contaminant biodegradation is a fundamental driver of exposure concentration, timing, duration, and, thus, EDC ecological risk. Anthropogenic contaminants...
Authors
Paul M. Bradley, William A. Battaglin, Luke R. Iwanowicz, Jimmy M. Clark, Celeste A. Journey
Spatial and temporal variation in microcystins occurrence in wadeable streams in the southeastern USA Spatial and temporal variation in microcystins occurrence in wadeable streams in the southeastern USA
Despite historical observations of potential microcystin-producing cyanobacteria (including Leptolyngbya,Phormidium, Pseudoanabaena, and Anabaena species) in 74% of headwater streams in Alabama, Georgia, South Carolina, and North Carolina (USA) from 1993 to 2011, fluvial cyanotoxin occurrence has not been systematically assessed in the southeastern United States. To begin to address this...
Authors
Keith A. Loftin, Jimmy M. Clark, Celeste A. Journey, Dana W. Kolpin, Peter C. Van Metre, Paul M. Bradley
A seasonal comparison of surface sediment characteristics in Chincoteague Bay, Maryland and Virginia, USA A seasonal comparison of surface sediment characteristics in Chincoteague Bay, Maryland and Virginia, USA
Scientists from the U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center conducted a seasonal collection of surficial sediments from Chincoteague Bay and Tom's Cove, between Assateague Island and the Delmarva Peninsula in late March/early April 2014 and October 2014. The sampling efforts were part of a larger U.S. Geological Survey study to assess the effects of storm...
Authors
Alisha M. Ellis, Marci E. Marot, Cathryn J. Wheaton, Julie Bernier, Christopher G. Smith
New insights into the Edwards Aquifer—Brackish-water simulation, drought, and the role of uncertainty analysis New insights into the Edwards Aquifer—Brackish-water simulation, drought, and the role of uncertainty analysis
The Edwards aquifer is an important water resource in south-central Texas, providing water for residents, businesses, and ecosystems. The aquifer is a highly complex karst system characterized by areas of rapid groundwater flow, faulted and fractured Cretaceous-age rocks, and multiple water-quality zones. Karst aquifer systems include soluble rocks such as limestone and dolomite that can...
Authors
Linzy K. Foster, Jeremy T. White
Quality of surface-water supplies in the Triangle area of North Carolina, water years 2010-11 Quality of surface-water supplies in the Triangle area of North Carolina, water years 2010-11
Surface-water supplies are important sources of drinking water for residents in the Triangle area of North Carolina, which is located within the upper Cape Fear and Neuse River Basins. Since 1988, the U.S. Geological Survey and a consortium of local governments have tracked water-quality conditions and trends in several of the area’s water-supply lakes and streams. This report summarizes...
Authors
C.A. Pfeifle, J.L. Cain, R.B. Rasmussen
Integrated risk and recovery monitoring of ecosystem restorations on contaminated sites Integrated risk and recovery monitoring of ecosystem restorations on contaminated sites
Ecological restorations of contaminated sites balance the human and ecological risks of residual contamination with the benefits of ecological recovery and the return of lost ecological function and ecosystem services. Risk and recovery are interrelated dynamic conditions, changing as remediation and restoration activities progress through implementation into long-term management and...
Authors
Michael J. Hooper, Stephen J. Glomb, David Harper, Timothy B. Hoelzle, Lisa M. McIntosh, David R. Mulligan
Migratory corridors of adult female Kemp’s ridley turtles in the Gulf of Mexico Migratory corridors of adult female Kemp’s ridley turtles in the Gulf of Mexico
For many marine species, locations of migratory pathways are not well defined. We used satellite telemetry and switching state-space modeling (SSM) to define the migratory corridor used by Kemp's ridley turtles (Lepidochelys kempii) in the Gulf of Mexico. The turtles were tagged after nesting at Padre Island National Seashore, Texas, USA from 1997 to 2014 (PAIS; n = 80); Rancho Nuevo...
Authors
Donna J. Shaver, Kristen M. Hart, Ikuko Fujisaki, Cynthia Rubio, Autumn R. Sartain-Iverson, Jaime Pena, Daniel Gomez Gamez, Raul de Jesus Gonzales Diaz Miron, Patrick M. Burchfield, Hector J. Martinez, Jaime Ortiz
Differences in impacts of Hurricane Sandy on freshwater swamps on the Delmarva Peninsula, Mid−Atlantic Coast, USA Differences in impacts of Hurricane Sandy on freshwater swamps on the Delmarva Peninsula, Mid−Atlantic Coast, USA
Hurricane wind and surge may have different influences on the subsequent composition of forests. During Hurricane Sandy, while damaging winds were highest near landfall in New Jersey, inundation occurred along the entire eastern seaboard from Georgia to Maine. In this study, a comparison of damage from salinity intrusion vs. wind/surge was recorded in swamps of the Delmarva Peninsula...
Authors
Beth A. Middleton
Potentiometric surfaces of the Arnold Engineering Development Complex Area, Arnold Air Force Base, Tennessee, May and September 2011 Potentiometric surfaces of the Arnold Engineering Development Complex Area, Arnold Air Force Base, Tennessee, May and September 2011
Arnold Air Force Base occupies about 40,000 acres in Coffee and Franklin Counties, Tennessee. The primary mission of Arnold Air Force Base is to provide risk-reduction information in the development of aerospace products through test and evaluation. This mission is achieved in part through test facilities at Arnold Engineering Development Complex (AEDC), which occupies about 4,000 acres...
Authors
Connor J. Haugh, John A. Robinson
Comment on "Worldwide evidence of a unimodal relationship between productivity and plant species richness" Comment on "Worldwide evidence of a unimodal relationship between productivity and plant species richness"
Fraser et al. (Reports, 17 July 2015, p. 302) report a unimodal relationship between productivity and species richness at regional and global scales, which they contrast with the results of Adler et al. (Reports, 23 September 2011, p. 1750). However, both data sets, when analyzed correctly, show clearly and consistently that productivity is a poor predictor of local species richness.
Authors
Andrew T. Tredennick, Peter B. Adler, James B. Grace, W Stanley Harpole, Elizabeth T. Borer, Eric W. Seabloom, T. Michael Anderson, Jonathan D. Bakker, Lori A. Biederman, Cynthia S. Brown, Yvonne M. Buckley, Cheng-Jin Chu, Scott L. Collins, Michael J. Crawley, Philip A. Fay, Jennifer Firn, Daniel S. Gruner, Nicole Hagenah, Yann Hautier, Andy Hector, Helmut Hillebrand, Kevin P. Kirkman, Johannes M. H. Knops, Ramesh Laungani, Eric M. Lind, Andrew S. MacDougall, Rebecca L. McCulley, Charles E. Mitchell, Joslin L. Moore, John W. Morgan, John L. Orrock, Pablo L. Peri, Suzanne M. Prober, Anita C. Risch, Martin Schuetz, Karina L. Speziale, Rachel J. Standish, Lauren L. Sullivan, Glenda M. Wardle, Ryan J. Williams, Louie H. Yang