Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 10420
Watershed modeling applications in south Texas Watershed modeling applications in south Texas
Watershed models can be used to simulate natural and human-altered processes including the flow of water and associated transport of sediment, chemicals, nutrients, and microbial organisms within a watershed. Simulation of these processes is useful for addressing a wide range of water-resource challenges, such as quantifying changes in water availability over time, understanding the...
Authors
Diana E. Pedraza, Darwin J. Ockerman
Carbonate aquifers Carbonate aquifers
Only limited hydrogeological research has been conducted using ichnology in carbonate aquifer characterization. Regardless, important applications of ichnology to carbonate aquifer characterization include its use to distinguish and delineate depositional cycles, correlate mappable biogenically altered surfaces, identify zones of preferential groundwater flow and paleogroundwater flow...
Authors
Kevin J. Cunningham, Michael Sukop, H. Allen Curran
Restoration of freshwater cypress-tupelo wetlands in the southeastern U.S. following severe hurricanes Restoration of freshwater cypress-tupelo wetlands in the southeastern U.S. following severe hurricanes
Freshwater forested wetlands commonly occur in the lower Coastal Plain of the southeastern US with baldcypress (Taxodium distichum [L.] L.C. Rich.) and water tupelo (Nyssa aquatica L.) often being the dominant trees. Extensive anthropogenic activities combined with eustatic sea-level rise and land subsidence have caused widespread hydrological changes in many of these forests. In...
Authors
William H. Conner, Ken W. Krauss, Gary P. Shaffer
Sirenian pathology and mortality assessment: Chapter 17 Sirenian pathology and mortality assessment: Chapter 17
No abstract available.
Authors
Robert K. Bonde, Antonio Mignucci-Giannoni, Gregory D. Bossart
Emergent wetlands status and trends in the northern Gulf of Mexico: 1950-2010 Emergent wetlands status and trends in the northern Gulf of Mexico: 1950-2010
Poster presented during the Mississippi-Alabama Sea Grant Consortium Bays and Bayous Symposium 2012 on the decline of emergent wetlands in the northern Gulf of Mexico. Throughout the past century, emergent wetlands have been declining across the Gulf of Mexico. Emergent wetland ecosystems provide many resources, including plant and wildlife habitat, commercial and recreational economic...
Impact assessment of extreme storm events using a Bayesian network Impact assessment of extreme storm events using a Bayesian network
This paper describes an investigation on the usefulness of Bayesian Networks in the safety assessment of dune coasts. A network has been created that predicts the erosion volume based on hydraulic boundary conditions and a number of cross-shore profile indicators. Field measurement data along a large part of the Dutch coast has been used to train the network. Corresponding storm impact...
Authors
C. den Heijer, Dirk T.J.A. Knipping, Nathaniel G. Plant, Jaap S. M. van Thiel de Vries, Fedor Baart, Pieter H. A. J. M. van Gelder
Mississippi river delta: Chapter G in Emergent wetlands status and trends in the northern Gulf of Mexico: 1950-2010 Mississippi river delta: Chapter G in Emergent wetlands status and trends in the northern Gulf of Mexico: 1950-2010
No abstract available.
Authors
Lawrence R. Handley, Kathryn A. Spear, Mirka Zapletal, Cindy A. Thatcher, William Jones, Scott Wilson
Statewide summary for Texas Statewide summary for Texas
The Texas coast (Figure 1) consists of complex and diverse ecosystems with a varying precipitation gradient. The northernmost portion of the coast, extending from Sabine Lake to Galveston Bay, is composed of salt, brackish, intermediate, and fresh marshes, with humid flatwoods inland (Moulton and others, 1997). Coastal prairies are found across the entire coast. From Galveston Bay to...
Authors
Lawrence R. Handley, Kathryn A. Spear, Jim Gibeaut, Cindy A. Thatcher
Introduction to phytoremediation of contaminated groundwater Introduction to phytoremediation of contaminated groundwater
This book provides the reader with the comprehensive view necessary to understand and critically evaluate the design, implementation, and monitoring of phytoremediation at sites characterized by contaminated groundwater. Part I presents the historical foundation of the interaction between plants and groundwater, introduces fundamental groundwater concepts for plant physiologists, and...
Authors
James E. Landmeyer
Near-surface, marine seismic-reflection data defines potential hydrogeologic confinement bypass in a tertiary carbonate aquifer, southeastern Florida Near-surface, marine seismic-reflection data defines potential hydrogeologic confinement bypass in a tertiary carbonate aquifer, southeastern Florida
Approximately 210 km of near-surface, high-frequency, marine seismic-reflection data were acquired on the southeastern part of the Florida Platform between 2007 and 2011. Many high-resolution, seismic-reflection profiles, interpretable to a depth of about 730 m, were collected on the shallow-marine shelf of southeastern Florida in water as shallow as 1 m. Landward of the present-day...
Authors
Kevin J. Cunningham, Cameron Walker, Richard L. Westcott
The native Florida Green Watersnak, Nerodia floridana (Goff 1936) , preying upon the nonindigenous African Jewelfish, Hemichromis letourneuxi Sauvage 1880, in Florida. The native Florida Green Watersnak, Nerodia floridana (Goff 1936) , preying upon the nonindigenous African Jewelfish, Hemichromis letourneuxi Sauvage 1880, in Florida.
No abstract available
Authors
Kenneth L. Krysko, Stephen J. Walsh, Robert H. Robins
Synthesis of benthic flux components in the Patos Lagooncoastal zone, Rio Grande do Sul, Brazil Synthesis of benthic flux components in the Patos Lagooncoastal zone, Rio Grande do Sul, Brazil
The primary objective of this work is to synthesize components of benthic flux in the Patos Lagoon coastal zone, Rio Grande do Sul, Brazil. Specifically, the component of benthic discharge flux forced by the terrestrial hydraulic gradient is 0.8 m3 d-1; components of benthic discharge and recharge flux associated with the groundwater tidal prism are both 2.1 m3 d-1; components of benthic...
Authors
Jeffrey N. King