Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 10351
Identification of Acara (Cichlidae: Cichlasoma) established in Florida, USA Identification of Acara (Cichlidae: Cichlasoma) established in Florida, USA
The Black Acara, Cichlasoma bimaculatum (Linnaeus, 1758), was first reported as introduced to Florida in 1965. Native to Venezuela, Guyana, Suriname, western French Guiana, and northern Brazil, the species is now distributed throughout Florida’s southern peninsula. Examination of live and preserved acara from Central Florida, heretofore identified as Black Acara, reveal the presence of...
Authors
Robert H Robins, Mary E. Brown, Ryan A Crutchfield
Field observations of wind waves in Upper Delaware Bay with living shorelines Field observations of wind waves in Upper Delaware Bay with living shorelines
Constructed oyster reefs (CORs) provide shore protections and habitats for fish and shellfish communities via wave energy attenuation. However, the processes and mechanism of CORs on wave attenuation remain unclear, thus limiting the effective assessment of CORs for shoreline protection. This paper presents results of a field investigation on wave characteristics and wave spectral...
Authors
Ling Zhu, Q. Chen, Hongqing Wang, William D. Capurso, L.M. Niemoczynski, Kelin Hu, Gregg Snedden
Rapid peat development beneath created, maturing mangrove forests: Ecosystem changes across a 25-year chronosequence Rapid peat development beneath created, maturing mangrove forests: Ecosystem changes across a 25-year chronosequence
Mangrove forests are among the world’s most productive and carbon‐rich ecosystems. Despite growing understanding of factors controlling mangrove forest soil carbon stocks, there is a need to advance understanding of the speed of peat development beneath maturing mangrove forests— especially in created and restored mangrove forests that are intended to compensate for ecosystem functions...
Authors
Michael J. Osland, Laura C. Feher, Amanda C. Spivak, Janet A. Nestlerode, Alejandro E. Almario, Nicole Cormier, Andrew From, Ken W. Krauss, Marc J. Russell, Federico Alvarez, Darrin D. Dantin, James E. Harvey, Camille L. Stagg
Forecasting future beach width- A case study along the Florida Atlantic coast Forecasting future beach width- A case study along the Florida Atlantic coast
Historical cross-shore positions of the shoreline and dune base were used as inputs for a Kalman filter algorithm to forecast the positions of these features in the year 2028. The beach width was also computed as the cross-shore distance between the forecasted 2028 shoreline and dune-base positions. While it does not evaluate the suitability of a nesting beach or identify optimal nesting...
Authors
Joseph W. Long, Rachel E. Henderson, David M. Thompson
Herpetofauna occupancy and community composition along a tidal swamp salinity gradient Herpetofauna occupancy and community composition along a tidal swamp salinity gradient
Occupancy patterns of herpetofauna in most tidal freshwater swamps are unknown. Tidal freshwater swamps currently face multiple threats, including salinization, which can influence their associated plant and animal communities. The impacts of salinization to herpetofauna communities in tidal freshwater swamps have not been assessed. To improve predictions regarding these herpetofauna, we...
Authors
Sidney T Godfrey, J. Hardin Waddle, Robert F Baldwin, William H. Conner, William C Bridges, Jamie A. Duberstein
Soil shear strength losses in two fresh marshes with variable increases in N and P loading Soil shear strength losses in two fresh marshes with variable increases in N and P loading
We measured soil shear strength (SSS) from 2009 to 2018 in two hydrologically distinct freshwater marshes dominated by Panicum hemitomon after nitrogen (N) and phosphorous (P) were applied to the surface in spring. The average SSS averaged over 100 cm depth in the floating and anchored marshes declined up to 30% throughout the profiles and with no apparent differences in the effects of...
Authors
R. Eugene Turner, Christopher M. Swarzenski, James E. Bodker
Final Alabama Barrier Island restoration assessment report, appendix A: Data management plan 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
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 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...
Authors
James Flocks, Noreen A. Buster, Owen T. Brenner
Recent evaluation of corbicula form D distribution in the Midwest, U.S.A 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...
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 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...
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 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...
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 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...
Authors
Anastasios Stathakopoulos, Bernhard M Riegl, Lauren Toth