Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 9967
Final Alabama Barrier Island restoration assessment report, appendix A: Data management plan
The Alabama Barrier Island Restoration Assessment project focused exclusively on Dauphin Island, a significant barrier island along the northern Gulf of Mexico. This restoration feasibility study effort required data collection and analysis of many data types (e.g., hydro, sediment, currents, etc.) through the project’s life cycle to assess restoration measures and their effects on the sustainabil
Authors
Christina B. Hunnicutt, Craig Conzelmann
Seafloor change around the Mississippi barrier islands, 1920 to 2016—The influence of storm effects on inlet and island morphodynamics
The Mississippi Barrier Islands in the northern Gulf of Mexico experienced high rates of spatial change over recorded history. Wave-induced sediment transport induced island migration, landward retreat, and inlet evolution. These processes can be measured using repeat bathymetric surveys to analyze elevation change over time. This study analyzes digital elevation models created from three time per
Authors
James Flocks, Noreen A. Buster, Owen T. Brenner
Recent evaluation of corbicula form D distribution in the Midwest, U.S.A
The genus Corbicula contains one of the most common and successful aquatic invasive species to North America. Prior to 2015 two predominant species of Corbicula were known from the United States—C. fluminea and C. largillierti, referred to as Forms A and B, respectively. Form A has spread throughout most of the U.S., while Form B is mainly contained in the Midwest and southern U.S. In 2015 a novel
Authors
Sarah Douglass, Emily Reasor, Jeremy S. Tiemann, Alison Stodola, Stephen E. McMurray, Barry C. Poulton
Dunes in the world's big rivers are characterized by low-angle lee-side slopes and a complex shape
Dunes form critical agents of bedload transport in all of the world’s big rivers, and constitute appreciable sources of bed roughness and flow resistance. Dunes also generate stratification that is the most common depositional feature of ancient riverine sediments. However, current models of dune dynamics and stratification are conditioned by bedform geometries observed in small rivers and laborat
Authors
Julia Cisneros, Jim L. Best, Thaienne van Dijk, Renato Paes de Almeida, Mario Amsler, Justin A. Boldt, Bernardo Freitas, Cristiano Galeazzi, Richard J. Huizinga, Marco Ianniruberto, Hongbo Ma, Jeff Nittrouer, Kevin Oberg, Oscar Orfeo, Daniel Parsons, Ricardo N. Szupiany, Ping Wang, Yuanfeng Zhang
Shifts in hatching date of American crocodile (Crocodylus acutus) in southern Florida
Globally temperature of marine environments is on the rise and temperature plays an important role in the life-history of reptiles. In this study, we examined the relationship between sea surface temperature and average date of hatching for American crocodiles (Crocodylus acutus) over a 37-year period at two nesting sites, Everglades National Park and Florida Power and Light Turkey Point Power Pla
Authors
Michael Cherkiss, James I. Watling, Laura A. Brandt, Frank J. Mazzotti, Jim Linsay, Jeffrey S. Beauchamp, Jerome J. Lorenz, Joseph Wasilewski, Ikuko Fujisaki, Kristen Hart
A revised Holocene coral sea-level database from the Florida reef tract, USA
The coral reefs and mangrove habitats of the south Florida region have long been
used in sea-level studies for the western Atlantic because of their broad geographic
extent and composition of sea-level tracking biota. The data from this region have
been used to support several very different Holocene sea-level reconstructions (SLRs)
over the years. However, many of these SLRs did not incorporate a
Authors
Anastasios Stathakopoulos, Bernhard M Riegl, Lauren Toth
Precipitation, temperature, groundwater-level elevation, streamflow, and potential flood storage trends within the Brazos, Colorado, Big Cypress, Guadalupe, Neches, Sulphur, and Trinity River basins in Texas through 2017
The U.S. Geological Survey (USGS), in cooperation with the U.S. Army Corps of Engineers (USACE), analyzed streamflow trends and streamflow-related variables through 2017 in seven important water-supply basins to provide information that can help water managers with the USACE and river authorities make future water management decisions. The primary purpose of this report is to document trends in lo
Authors
Glenn R. Harwell, Jeremy McDowell, Cathina Gunn-Rosas, Brett Garrett
The use of support vectors from support vector machines for hydrometeorologic monitoring network analyses
Hydrometeorologic monitoring networks are ubiquitous in contemporary earth-system science. Network stakeholders often inquire about the importance of sites and their locations when discussing funding and monitoring design. Support vector machines (SVMs) can be useful by their assigning each monitoring site as either a support or nonsupport vector. A potentiometric surface was created from syntheti
Authors
William H. Asquith
Soil surface elevation dynamics in a mangrove-to-marsh ecotone characterized by vegetation shifts
Mangrove forest encroachment into coastal marsh habitats has been described in subtropical regions worldwide in recent decades. To better understand how soil processes may influence vegetation change, we studied soil surface elevation change, accretion rates, and soil subsurface change across a coastal salinity gradient in Florida, USA, an area with documented mangrove encroachment into saline mar
Authors
Rebecca J. Howard, Andrew From, Ken W. Krauss, Kimberly D. Andres, Nicole Cormier, Larry K. Allain, Michael Savarese
Pulsed flow-through auto-feeding beaker systems for the laboratory culture of juvenile freshwater mussels
Newly metamorphosed freshwater mussels are small and delicate, so that captive laboratory culture presents challenges for handling; for maintenance of suitable microhabitat, water quality, and food; and for avoidance of competitors and predators. To address these challenges, a new pulsed flow-through auto-feeding beaker system was developed for culturing juvenile mussels. In this system, groups of
Authors
James L. Kunz, Eric Brunson, M. Christopher Barnhart, Elizabeth A. Glidewell, Ning Wang, Christopher G. Ingersoll
Seasonal drivers of chemical and hydrological patterns in roadside infiltration-based green infrastructure
Infiltration-based green infrastructure has become a popular means of reducing stormwater hazards in urban areas. However, the long-term effects of green infrastructure on the geochemistry of roadside environments are poorly defined, particularly given the considerable roadside legacy metal contamination from historic industrial activity and vehicle emissions (e.g., Pb). Most current research on g
Authors
Angela R. Mullins, Daniel J Bain, Erin Pfeil McCullough, Kristina G. Hopkins, S. Lavin, Erin Copeland
Fluxes of agricultural nitrogen and metolachlor metabolites are highly correlated in a first order stream in Maryland, USA
Nitrogen pollution in watersheds containing significant
cropland area is generally problematic. Conservation practices intended
to reduce nitrate-N (NO3--N) export from watersheds are being implemented
by many regions without necessary tools to assess effectiveness of these
abatement tools. A commonly used herbicide metolachlor degrades in the
vadose zone of croplands to form two metabolites (meto
Authors
Cliff Rice, W. Dean Hively, Gregory W. McCarty, Cathleen Hapeman