Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 10365
Ecological controls on the shell geochemistry of pink and white Globigerinoides ruber in the northern Gulf of Mexico: implications for paleoceanographic reconstruction Ecological controls on the shell geochemistry of pink and white Globigerinoides ruber in the northern Gulf of Mexico: implications for paleoceanographic reconstruction
We evaluate the relationship between foraminiferal test size and shell geochemistry (δ13C, δ18O, and Mg/Ca) for two of the most commonly used planktonic foraminifers for paleoceanographic reconstruction in the subtropical Atlantic Ocean: the pink and white varieties of Globigerinoides ruber. Geochemical analyses were performed on foraminifera from modern core-top samples of high...
Authors
Julie N. Richey, Richard Z. Poore, Benjamin P. Flower, David J. Hollander
Ambystoma maculatum (spotted salamander). Reproduction Ambystoma maculatum (spotted salamander). Reproduction
No abstract avaailable.
Authors
Brad M. Glorioso, Hardin Waddle, Jeromi Hefner
Tidally driven export of dissolved organic carbon, total mercury, and methylmercury from a mangrove-dominated estuary Tidally driven export of dissolved organic carbon, total mercury, and methylmercury from a mangrove-dominated estuary
The flux of dissolved organic carbon (DOC) from mangrove swamps accounts for 10% of the global terrestrial flux of DOC to coastal oceans. Recent findings of high concentrations of mercury (Hg) and methylmercury (MeHg) in mangroves, in conjunction with the common co-occurrence of DOC and Hg species, have raised concerns that mercury fluxes may also be large. We used a novel approach to...
Authors
Brian A. Bergamaschi, D. P. Krabbenhoft, George Aiken, Eduardo Patino, D.G. Rumbold, William H. Orem
Sand grain sources at coral reefs indicate reef health Sand grain sources at coral reefs indicate reef health
No abstract available.
Authors
Barbara H. Lidz
Outlier reefs are found off the Florida Keys Outlier reefs are found off the Florida Keys
No abstract available.
Authors
Barbara H. Lidz
Many other plants grow in mangrove forests too! Many other plants grow in mangrove forests too!
No abstract available.
Authors
Thomas J. Smith
Simulating the effect of climate extremes on groundwater flow through a lakebed Simulating the effect of climate extremes on groundwater flow through a lakebed
Groundwater exchanges with lakes resulting from cyclical wet and dry climate extremes maintain lake levels in the environment in ways that are not well understood, in part because they remain difficult to simulate. To better understand the atypical groundwater interactions with lakes caused by climatic extremes, an original conceptual approach is introduced using MODFLOW-2005 and a...
Authors
Makhan L. Virdi, Terrie M. Lee, Amy Swancar, Richard G. Niswonger
Low-flow frequency and flow duration of selected South Carolina streams in the Saluda, Congaree, and Edisto River basins through March 2009 Low-flow frequency and flow duration of selected South Carolina streams in the Saluda, Congaree, and Edisto River basins through March 2009
Part of the mission of the South Carolina Department of Health and Environmental Control and the South Carolina Department of Natural Resources is to protect and preserve South Carolina's water resources. Doing so requires an ongoing understanding of streamflow characteristics of the rivers and streams in South Carolina. A particular need is information concerning the low-flow...
Authors
Toby D. Feaster, Wladmir B. Guimaraes
Experimental determination of soil heat storage for the simulation of heat transport in a coastal wetland Experimental determination of soil heat storage for the simulation of heat transport in a coastal wetland
Two physical experiments were developed to better define the thermal interaction of wetland water and the underlying soil layer. This information is important to numerical models of flow and heat transport that have been developed to support biological studies in the South Florida coastal wetland areas. The experimental apparatus consists of two 1.32 m diameter by 0.99 m tall, trailer...
Authors
Michael Swain, Matthew Swain, Melinda Lohmann, Eric Swain
Sirenian pathology and mortality assessment Sirenian pathology and mortality assessment
No abstract available.
Authors
Robert K. Bonde, Antonio A. Mignucci-Ginannoni, Gregory D. Bossart
Microsatellite genetic diversity and differentiation of native and introduced grass carp populations in three continents Microsatellite genetic diversity and differentiation of native and introduced grass carp populations in three continents
Grass carp (Ctenopharyngodon idella), a freshwater species native to China, has been introduced to about 100 countries/regions and poses both biological and environmental challenges to the receiving ecosystems. In this study, we analyzed genetic variation in grass carp from three introduced river systems (Mississippi River Basin in US, Danube River in Hungary, and Tone River in Japan) as...
Authors
Duane Chapman, Q. Chen, Chenghui Wang, Jinlian Zhao, Guoqing Lu, Jeney Zsigmond, Si-Fa Li
Initiation of long-term coupled microbiological, geochemical, and hydrological experimentation within the seafloor at North Pond, western flank of the Mid-Atlantic Ridge Initiation of long-term coupled microbiological, geochemical, and hydrological experimentation within the seafloor at North Pond, western flank of the Mid-Atlantic Ridge
Integrated Ocean Drilling Program (IODP) Expedition 336 successfully initiated subseafloor observatory science at a young mid-ocean-ridge flank setting. All of the drilled sites are located in the North Pond region of the Atlantic Ocean (22°45′N, 46°05′W) in 4414–4483 m water depth. This area is known from previous ocean drilling and site survey investigations as a site of particularly...
Authors
K.J. Edwards, N. Backert, W. Bach, K. Becker, A. Klaus, Dale W. Griffin, L. Anderson, A.G. Haddad, Y. Harigane, P.L. Campion, H. Hirayama, H.J. Mills, S.M. Hulme, K. Nakamura, S.L. Jorgensen, B. Orcutt, T.L. Insua, Y.-S. Park, V. Rennie, E.C. Salas, O. Rouxel, F. Wang, J.A. Russel, C.G. Wheat, K. Sakata, M. Brown, J.L. Magnusson, Z. Ettlinger