Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 10351
Assessing the impact of open-ocean and back-barrier shoreline change on Dauphin Island, Alabama, at multiple time scales over the last 75 years Assessing the impact of open-ocean and back-barrier shoreline change on Dauphin Island, Alabama, at multiple time scales over the last 75 years
Dauphin Island and Little Dauphin Island, collectively, make up a geomorphically complex barrier island system located along Alabama’s southern coast, separating Mississippi Sound from the Gulf of Mexico and Mobile Bay. The barrier island system provides numerous economical (tourism, fisheries) and natural (habitat for migratory birds, natural protection of inland and coastal areas from...
Authors
Christopher G. Smith, Joseph W. Long, Rachel E. Henderson, Paul R. Nelson
Simulation of groundwater flow and analysis of projected water use for the Rush Springs aquifer, western Oklahoma Simulation of groundwater flow and analysis of projected water use for the Rush Springs aquifer, western Oklahoma
The U.S. Geological Survey, in cooperation with the Bureau of Reclamation and the Oklahoma Water Resources Board, (1) quantified the groundwater resources of the Rush Springs aquifer in western Oklahoma by developing a numerical groundwater-flow model, (2) evaluated the effects of estimated equal-proportionate-share (EPS) pumping rates on aquifer storage and streamflow for time periods...
Authors
J.H. Ellis
Optimal spatial allocation of control effort to manage invasives in the face of imperfect detection and misclassification Optimal spatial allocation of control effort to manage invasives in the face of imperfect detection and misclassification
Imperfect detection and misclassification errors are often ignored in the context of invasive species management. Here we present an approach that combines spatially explicit models and an optimization technique to design optimal search and destroy strategies based on noisy monitoring observations. We focus on two invasive plants, melaleuca (Melaleuca quinquenervia) and Old World...
Authors
Mathieu Bonneau, Julien Martin, Nathalie Peyrard, LeRoy Rodgers, Christina M. Romagosa, Fred A. Johnson
Sediment transport model including short-lived radioisotopes: Model description and idealized test cases Sediment transport model including short-lived radioisotopes: Model description and idealized test cases
Geochronologies derived from sediment cores in coastal locations are often used to infer event bed characteristics such as deposit thicknesses and accumulation rates. Such studies commonly use naturally occurring, short-lived radioisotopes, such as Beryllium-7 (7Be) and Thorium-234 (234Th), to study depositional and post-depositional processes. These radioisotope activities, however, are...
Authors
Justin J. Birchler, Courtney K. Harris, Christopher R. Sherwood, Tara A Kniskern
Tag retention and survival of juvenile bighead carp implanted with a dummy acoustic tag at three temperatures Tag retention and survival of juvenile bighead carp implanted with a dummy acoustic tag at three temperatures
Bighead carp Hypophthalmichthys nobilis and silver carp Hypophthalmichthys molitrix(together, the bigheaded carps) are invasive fishes in North America that have resulted in substantial negative effects on native fish communities and aquatic ecosystems. Movement and behavior of adult bigheaded carps has been studied previously using telemetry, while similar studies with juvenile...
Authors
Curtis G. Byrd, Duane Chapman, Emily K. Pherigo, Jeffrey C. Jolley
Modeling water quality in the Anthropocene: Directions for the next-generation aquatic ecosystem models Modeling water quality in the Anthropocene: Directions for the next-generation aquatic ecosystem models
“Everything changes and nothing stands still” (Heraclitus). Here we review three major improvements to freshwater aquatic ecosystem models — and ecological models in general — as water quality scenario analysis tools towards a sustainable future. To tackle the rapid and deeply connected dynamics characteristic of the Anthropocene, we argue for the inclusion of eco-evolutionary, novel...
Authors
Wolf M. Mooij, Dianneke van Wijk, Arthur H.W. Beusen, Robert J. Brederveld, Manqi Chang, Marleen Cobben, Donald L. DeAngelis, Andrea S. Downing, Pamela Green, Alena S. Gsell, Inese Huttunen, Jan H. Janse, Annette B. G. Janssen, Geerten M. Hengeveld, Xiangzhen Kong, Lilith Kramer, Jan J. Kuiper, Simon J. Langan, Bart A. Nolet, Rascha J. M. Nuijten, Maryna Strokal, Tineke A. Troost, Anne A. van Dam, Sven Teurlincx
Reconnaissance of mixed organic and inorganic chemicals in private and public supply tapwaters at selected residential and workplace sites in the United States Reconnaissance of mixed organic and inorganic chemicals in private and public supply tapwaters at selected residential and workplace sites in the United States
Safe drinking water at the point-of-use (tapwater, TW) is a United States public health priority. Multiple lines of evidence were used to evaluate potential human health concerns of 482 organics and 19 inorganics in TW from 13 (7 public supply, 6 private well self-supply) home and 12 (public supply) workplace locations in 11 states. Only uranium (61.9 μg L–1, private well) exceeded a...
Authors
Paul M. Bradley, Dana W. Kolpin, Kristin M. Romanok, Kelly L. Smalling, Michael J. Focazio, Juliane B. Brown, Mary C. Cardon, Kurt D. Carpenter, Steven R. Corsi, Laura A. DeCicco, Julie E. Dietze, Nicola Evans, Edward T. Furlong, Carrie E. Givens, James L. Gray, Dale W. Griffin, Christopher P. Higgins, Michelle L. Hladik, Luke R. Iwanowicz, Celeste A. Journey, Kathryn Kuivila, Jason R. Masoner, Carrie A. McDonough, Michael T. Meyer, James L. Orlando, Mark J. Strynar, Christopher P. Weis, Vickie S. Wilson
By
Ecosystems Mission Area, Water Resources Mission Area, Contaminant Biology, Environmental Health Program, Toxic Substances Hydrology, Central Plains Water Science Center, California Water Science Center, Central Midwest Water Science Center, Colorado Water Science Center, Eastern Ecological Science Center, New Jersey Water Science Center, Oregon Water Science Center, South Atlantic Water Science Center (SAWSC), St. Petersburg Coastal and Marine Science Center, Upper Midwest Environmental Sciences Center, Upper Midwest Water Science Center, National Water Quality Laboratory
The effects of tropical cyclone-generated deposition on the sustainability of the Pearl River marsh, Louisiana: The importance of the geologic framework The effects of tropical cyclone-generated deposition on the sustainability of the Pearl River marsh, Louisiana: The importance of the geologic framework
Shoreline retreat is a tremendously important issue along the coast of the northern Gulf of Mexico, especially in Louisiana. Although this marine transgression results from a variety of causes, the crucial factor is the difference between marsh surface elevation and rising sea levels. In most cases, the primary cause of a marsh's inability to keep up with sea level is the lack of input...
Authors
Terrence A. McCloskey, Christopher G. Smith, Kam-Biu Liu, Paul R. Nelson
Landscape topoedaphic features create refugia from drought and insect disturbance in a lodgepole and whitebark pine forest Landscape topoedaphic features create refugia from drought and insect disturbance in a lodgepole and whitebark pine forest
Droughts and insect outbreaks are primary disturbance processes linking climate change to tree mortality in western North America. Refugia from these disturbances—locations where impacts are less severe relative to the surrounding landscape—may be priorities for conservation, restoration, and monitoring. In this study, hypotheses concerning physical and biological processes supporting...
Authors
Jennifer M. Cartwright
The influence of seep habitats on sediment macrofaunal biodiversity and functional traits The influence of seep habitats on sediment macrofaunal biodiversity and functional traits
Chemosynthetic ecosystems in the Gulf of Mexico (GOM) support dense communities of seep megafaunal invertebrates that rely on endosymbiotic bacteria for nutrition. Distinct infaunal communities are associated with the biogenic habitats created by seep biota, where habitat heterogeneity and sediment geochemistry influence local macrofaunal community structure. Here we examine the...
Authors
Amanda W. J. Demopoulos, Jill R. Bourque, Alanna Durkin, Erik E. Cordes
Flood frequency of rural streams in Mississippi, 2013 Flood frequency of rural streams in Mississippi, 2013
To improve flood-frequency estimates at rural streams in Mississippi, annual exceedance probability flows at gaged streams and regional regression equations used to estimate annual exceedance probability flows for ungaged streams were developed by using current geospatial data, new analytical methods, and annual peak-flow data through the 2013 water year. The regional regression...
Authors
Brandon T. Anderson
Shared habitat use by juveniles of three sea turtle species Shared habitat use by juveniles of three sea turtle species
The first step in understanding how sympatric species share habitat is defining spatial boundaries. While home range data for juvenile sea turtles exists, few studies have examined spatial overlap of multiple species in foraging habitat. Using satellite tracking technology, we define home ranges for juveniles of 3 sea turtle species (loggerhead, Kemp’s ridley, and green; n = 21) captured...
Authors
Margaret M. Lamont, Autumn R. Iverson