Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 10382
Trace elements and consequent ecological risks in mining- influenced streams of Appalachia Trace elements and consequent ecological risks in mining- influenced streams of Appalachia
Appalachian coal surface mines fracture geologic materials, causing release of both major ions and trace elements to water via accelerated weathering. When elevated above natural background, trace elements in streams may produce adverse effects to biota via direct exposure from water and sediment and via dietary exposure in food sources. Other studies have found elevated water...
Authors
Elyse V. Clark, David J. Soucek, Stephen H. Schoenholtz, Keridwen M. Whitmore, Carl E. Zipper
Modeling the effects of interior headland restoration on estuarine sediment transport processes in a marine-dominant estuary Modeling the effects of interior headland restoration on estuarine sediment transport processes in a marine-dominant estuary
The effects of interior headland restoration on estuarine sediment transport processes were assessed through process-based numerical modeling. Three proposed interior headland restoration scenarios in the Grand Bay estuary (Mississippi/Alabama) were modeled using Delft3D to understand impacts on suspended sediment concentrations, bed level morphology, and sediment fluxes under present...
Authors
Robert L. Jenkins, Davina Passeri, Christopher G. Smith, David M. Thompson, Kathryn E.L. Smith
Integrating remote sensing with ground-based observations to quantify the effects of an extreme freeze event on black mangroves (Avicennia germinans) at the landscape scale Integrating remote sensing with ground-based observations to quantify the effects of an extreme freeze event on black mangroves (Avicennia germinans) at the landscape scale
Climate change is altering the frequency and intensity of extreme weather events. Quantifying ecosystem responses to extreme events at the landscape scale is critical for understanding and responding to climate-driven change but is constrained by limited data availability. Here, we integrated remote sensing with ground-based observations to quantify landscape-scale vegetation damage from...
Authors
Melinda Martinez, Michael Osland, James B. Grace, Nicholas Enwright, Camille Stagg, Simen Kaalstad, Gordon Anderson, Anna R. Armitage, Just Cebrian, Karen L. Cummins, Richard Day, Donna J. Devlin, Kenneth H. Dunton, Laura Feher, Alejandro Fierro-Cabo, Elena A. Flores, Andrew From, A. Randall Hughes, David A. Kaplan, Amy K. Langston, Christopher J. Miller, Charles E. Proffitt, Nathan G.F. Reaver, Colt R. Sanspree, Caitlin M. Snyder, Andrew P. Stetter, Kathleen M. Swanson, Jamie E. Thompson, Carlos Zamora-Tovar
Effects of impoundments on selected flood-frequency and daily mean streamflow characteristics in Georgia, South Carolina, and North Carolina Effects of impoundments on selected flood-frequency and daily mean streamflow characteristics in Georgia, South Carolina, and North Carolina
The U.S. Geological Survey (USGS) has a long history of working cooperatively with the South Carolina Department of Transportation to develop methods for estimating the magnitude and frequency of floods for rural and urban streams that have minimal to no regulation or tidal influence. As part of those previous investigations, flood-frequency estimates also have been generated for...
Authors
Toby D. Feaster, Jonathan W. Musser
Effects of lead exposure on birds breeding in the Southeast Missouri Lead Mining District Effects of lead exposure on birds breeding in the Southeast Missouri Lead Mining District
Lead mining in the Southeast Missouri Lead Mining District began in the 1700s and continued for nearly 300 years; the waste piles associated with smelting, mining, and milling of lead ores have released metal residues that have contaminated soil and water in the region. Previous studies in the district have indicated potential harm to wildlife, including birds, because of elevated lead
Authors
Rebecka Brasso, Danielle M. Cleveland, Frank R. Thompson, David E. Mosby, Kathy Hixson, Melissa Roach, Barnett A. Rattner, Natalie Karouna-Renier, Julia S. Lankton
Lock 19 underwater acoustic deterrent system study—Interim project update, through 2022 Lock 19 underwater acoustic deterrent system study—Interim project update, through 2022
Invasive carp (Hypophthalmichthys nobilis [Richardson, 1845; Bighead Carp], H. molitrix [Valenciennes in Cuvier and Valenciennes, 1844; Silver Carp], Ctenopharyngodon idella [Valenciennes in Cuvier and Valenciennes, 1844; Grass Carp], and Mylopharyngodon piceus [Richardson, 1846; Black Carp]) expansion threatens the Laurentian Great Lakes and other major waterways. Numerous tools and...
Authors
Marybeth K. Brey, Christa M. Woodley, Jessica C. Stanton, Andrea K. Fritts, Matthew D. Sholtis, Theodore Castro-Santos, Jonathan M. Vallazza, Janice L. Albers
Telescoping prey selection in invasive Burmese pythons spells trouble for endangered rodents Telescoping prey selection in invasive Burmese pythons spells trouble for endangered rodents
The allometric scaling of predators and their prey is well established within snakes (i.e., gape-width limits maximum prey sizes). However, while some species exhibit ontogenetic shifts to larger prey as they grow, others exhibit telescoping prey selection and continue to consume small prey in addition to larger prey. The Burmese python (Python bivittatus) is a large dietary generalist...
Authors
Issac Lord, Joseph Redinger, Jeremy Dixon, Kristen Hart, Jacquelyn C. Guzy, Christina M. Romagosa, Michael V. Cove
Contribution of arsenic and uranium in private wells and community water systems to urinary biomarkers in US adults: The Strong Heart Study and the Multi-Ethnic Study of Atherosclerosis Contribution of arsenic and uranium in private wells and community water systems to urinary biomarkers in US adults: The Strong Heart Study and the Multi-Ethnic Study of Atherosclerosis
Background Chronic exposure to inorganic arsenic (As) and uranium (U) in the United States (US) occurs from unregulated private wells and federally regulated community water systems (CWSs). The contribution of water to total exposure is assumed to be low when water As and U concentrations are low.Objective We examined the contribution of water As and U to urinary biomarkers in the Strong...
Authors
Maya Spaur, Ronald A. Glabonjat, Kathrin Schilling, Melissa A. Lombard, Galvez-Fernandez, Wil Lieberman-Cribbin, Carolyn Hayek, Vesna Ilievski, Olgica Balac, Chiugo Izuchukwu, Kevin Patterson, Anirban Basu, Benjamin Bostick, Qixuan Chen, Tiffany Sanchez, Ana Navas-Acien, Anne E Nigra
Functional gene composition and metabolic potential of deep-sea coral-associated microbial communities Functional gene composition and metabolic potential of deep-sea coral-associated microbial communities
Over the past decade, an abundance of 16S rRNA gene surveys have provided microbiologists with data regarding the prokaryotes present in a coral-associated microbial community. Functional gene studies that provide information regarding what those microbes might do are fewer, particularly for non-tropical corals. Using the GeoChip 5.0S microarray, we present a functional gene study of...
Authors
Zoe A. Pratte, Frank J. Stewart, Christina A. Kellogg
Salinization and sedimentation drive contrasting assembly mechanisms of planktonic and sediment-bound bacterial communities in agricultural streams Salinization and sedimentation drive contrasting assembly mechanisms of planktonic and sediment-bound bacterial communities in agricultural streams
Agriculture is the most dominant land use globally and is projected to increase in the future to support a growing human population but also threatens ecosystem structure and services. Bacteria mediate numerous biogeochemical pathways within ecosystems. Therefore, identifying linkages between stressors associated with agricultural land use and responses of bacterial diversity is an...
Authors
Stephen E. DeVilbiss, Jason M. Taylor, Matthew B. Hicks
Analysis of high-resolution single channel seismic data for use in sediment resource evaluation, eastern Texas and western Louisiana Continental Shelf, Gulf of Mexico Analysis of high-resolution single channel seismic data for use in sediment resource evaluation, eastern Texas and western Louisiana Continental Shelf, Gulf of Mexico
Shallow subsurface geologic data recorded as high-resolution seismic profiles are used to interpret the geology of coastal and marine systems. These data were originally recorded on paper rolls that are stored in geophysical archives. Data collection has since converted to entirely digital formats, yet the analog data are still useful for geologic interpretation. This report describes...
Authors
James G. Flocks, Arnell S. Forde, Stephen T. Bosse
Boreal conifers maintain carbon uptake with warming despite failure to track optimal temperatures Boreal conifers maintain carbon uptake with warming despite failure to track optimal temperatures
Warming shifts the thermal optimum of net photosynthesis (ToptA) to higher temperatures. However, our knowledge of this shift is mainly derived from seedlings grown in greenhouses under ambient atmospheric carbon dioxide (CO2) conditions. It is unclear whether shifts in ToptA of field-grown trees will keep pace with the temperatures predicted for the 21st century under elevated...
Authors
Mirindi E. Dusenge, Jeffery M. Warren, Peter B. Reich, Eric Ward, Bridget K. Murphy, Artur Stefanski, Raimundo Bermudez, Marisol Cruz, David A. McLennan, Anthony W. King, Rebecca A. Montgomery, Paul J. Hanson, Danielle A. Way