Unified Interior Regions

Region 2: South Atlantic-Gulf (Includes Puerto Rico and the U.S. Virgin Islands)

Regions L2 Landing Page Tabs

Filter Total Items: 371
Date published: April 8, 2016
Status: Active

Stress Physiology, Scaling, and Water Use of Forested Wetland Trees and Stands

USGS investigates the eco-physiological responses of coastal forested wetland vegetation to envrionmental stressors, and what role vegetation may have in affecting local hydrological cycling as a result of these stressors. 

Date published: April 8, 2016
Status: Active

Modeling Tidal Freshwater Forested Wetlands (TFFW) Habitat Changes for Land Management

As tidal freshwater forested wetlands - TFFWs - are influenced by salinty due to salt water intrusion, they may experience changes in plant community composition, growth, and productivity. Models are needed to predict vegetation community change or dieback, as well as changes in carbon sequestration and storage due to changing climate, drought, changes in freshwater discharge, elevated carbon...

Date published: April 8, 2016
Status: Active

Ecology of Tidal Freshwater Forested Wetlands of the Southeastern United States

Tidal freshwater forested wetlands - TFFWs - can be found in the upper intertidal areas of many estuaries and act as a transition between coastal marshes and bottomland hardwood wetlands. However, it is because of their location that makes them vulnerable to sea-level rise, and they are constantly transitioning to different wetland types. USGS addresses how various processes are affected in...

Date published: April 8, 2016
Status: Active

RESTORE Science: Inventory of Gulf of Mexico Ecosystem Indicators Using an Ecological Resilience Framework

To effectively manage an ecosystem, resource managers need a way to evaluate its health and ability to function. Metrics that indicate ecosystem condition - or indicators - can be used to help determine how well management strategies work. 

Date published: April 8, 2016
Status: Active

Dynamics and Fluxes of Nutrients along Environmental Gradients in the Florida Everglades, USA

USGS research in the Florida Everglades will provide information on how environmental conditions and disturbances impact carbon storage in mangrove systems.

Date published: April 7, 2016
Status: Completed

Identification of Previously Undocumented Florida Grasshopper Sparrow and Confirmation of the Current Population Status and Distribution

Population trends suggest that the Florida Grasshopper Sparrow may go extinct within five years. USGS research aims to collect demographic information to help identify the current status of the species.

Date published: April 7, 2016
Status: Active

Plant Community Dynamics in a Mangrove-to-Marsh Transition Zone

Mangroves will compete with salt marsh plants in transitional areas, and recent studies have documented the expansion of mangroves into marsh habitats. To better understand the plant community dynamics in this transition zone, USGS scientists are tracking vegeation changes over time in south Florida. 

Date published: April 7, 2016
Status: Active

Surface Elevation Vulnerability of Coastal Forested Wetlands to Sea-Level Rise

Wetlands vary in their abilities to keep up with sea-level rise; they either adjust vertically and/or move inland. USGS is working with partners around the world to measure rates of surface elevation change relative to local sea-level rise. 

Date published: April 6, 2016
Status: Active

Efficacy of eDNA as an Early Detection and Rapid Response Indicator for Burmese Pythons in the Northern Greater Everglades Ecosystem

Traditional approaches to locating Burmese pythons - including visual searches and trapping - have resulted in low detection. Environmental DNA - or eDNA - is increasingly being used to detect the presence of non-native species, particularly when traditional methods may not be adequate. 

Date published: April 6, 2016
Status: Active

Genetic Analysis of the Invasive Burmese Python to Aid Management and Population-Control Decision-Making

Invasive Burmese pythons threaten the success of Everglades restoration efforts. To assist with management and population control decision making, USGS scientists are implementing genetic studies to identify potential new entry pathways and to help quantify the size of the breeding population.

Date published: April 5, 2016
Status: Active

Population Biology and Ecology of Diamondback Terrapins in Mangrove Forested Ecosystems in the Greater Everglades

Long-term capture-recapture research in the Everglades National Park provides baseline information on the Diamondback Terrapin, a species that may be threatened by human disturbances.

Date published: April 5, 2016

Benthic Habitat Characterization and Habitat Use of Endangered Sea Turtles in Marine Protected Areas of the Greater Everglades

USGS assesses how federally endangered sea turtles use the habitat in and around a no-take area in the Dry Tortugas National Park.

Filter Total Items: 5,355
Publication Thumbnail
Year Published: 2020

Multi-region assessment of pharmaceutical exposures and predicted effects in USA wadeable urban-gradient streams

Human-use pharmaceuticals in urban streams link aquatic-ecosystem health to human health. Pharmaceutical mixtures have been widely reported in larger streams due to historical emphasis on wastewater-treatment plant (WWTP) sources, with limited investigation of pharmaceutical exposures and potential effects in smaller headwater streams. In 2014–...

Bradley, Paul; Journey, Celeste A.; Button, Daniel T.; Carlisle, Daren; Huffman, B. J.; Qi, Sharon L.; Romanok, Kristin; Van Metre, Peter C.

Publication Thumbnail
Year Published: 2020

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...

Robins, Robert H; Brown, Mary E.; Crutchfield, Ryan A

Publication Thumbnail
Year Published: 2020

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...

Zhu, Ling; Chen, Qin; Wang, Hongqing; Capurso, William D.; Niemoczynski, Lukasz; Hu, Kelin; Snedden, Gregg

Publication Thumbnail
Year Published: 2020

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...

Osland, Michael J.; Feher, Laura C.; Spivak, Amanda C.; Nestlerode, Janet A.; Almario, Alejandro E.; Cormier, Nicole; From, Andrew; Krauss, Ken W.; Russell, Marc J.; Alvarez, Federico; Dantin, Darrin D.; Harvey, James E.; Stagg, Camille L.

Publication Thumbnail
Year Published: 2020

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...

Long, Joseph W.; Henderson, Rachel E.; Thompson, David M.
Long, J.W., Henderson, R.E., and Thompson, D.M., 2020, Forecasting future beach width—A case study along the Florida Atlantic coast: U.S. Geological Survey Open-File Report 2019–1150, 13 p., https://doi.org/10.3133/ofr20191150.

Publication Thumbnail
Year Published: 2020

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...

Godfrey, Sidney T; Waddle, J. Hardin; Baldwin, Robert F; Conner, William H.; Bridges, William C; Duberstein, Jamie A.

Publication Thumbnail
Year Published: 2020

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...

Turner, R. Eugene; Swarzenski, Christopher M.; Bodker, James E.

Publication Thumbnail
Year Published: 2020

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...

Hunnicutt, Christina B.; Conzelmann, Craig

Publication Thumbnail
Year Published: 2020

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...

Flocks, James G.; Buster, Noreen A.; Brenner, Owen T.
Flocks, J.G., Buster, N.A., and Brenner, O.T., 2020, Seafloor change around the Mississippi barrier islands, 1920 to 2016—The influence of storm effects on inlet and island morphodynamics: U.S. Geological Survey Open-File Report 2019–1140, 23 p., https://doi.org/10.3133/ofr20191140.

Publication Thumbnail
Year Published: 2020

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...

Cherkiss, Michael; Watling, James I.; Brandt, Laura A.; Mazzotti, Frank J.; Linsay, Jim; Beauchamp, Jeffrey S.; Lorenz, Jerome J.; Wasilewski, Joseph; Fujisaki, Ikuko; Hart, Kristen

Publication Thumbnail
Year Published: 2020

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...

Stathakopoulos, Anastasios; Riegl, Bernhard M; Toth, Lauren T.

Publication Thumbnail
Year Published: 2020

The use of support vectors from support vector machines for hydrometeorologic monitoring network analyses

Hydrometeorologic monitoring networks are ubiquitous in contemporary earth-system science. Network stakeholders often inquire about the importance of sites and their locations when discussing funding and monitoring design. Support vector machines (SVMs) can be useful by their assigning each monitoring site as either a support or nonsupport vector...

Asquith, William H.

Filter Total Items: 498
Sealcoated parking lot adjacent to sidewalk
July 29, 2010

Sealcoated parking lot

Sealcoated parking lot. Runoff from coal-tar-sealcoated pavement contains extremely high concentrations of polycyclic aromatic hydrocarbons (PAHs), and is toxic to aquatic life.  Read more here.

USGS
July 12, 2010

USGS Hydrologic Investigation of West Africa's Congo River (part two)

USGS South Carolina Water Science Center Data Chief, John Shelton in a special hydrologic expedition down West Africa's Congo River. In part two of this three part episode John describes the trials and tribulations of data collection on the Congo River.

June 2, 2010

Effects of Urbanization on Stream Ecosystems

Development can have negative effects on streams in urban and suburban areas. As a watershed becomes covered with pavement, sidewalks, and other types of urban land cover, stream organisms are confronted with an increased volume of storm water runoff, increased exposure to fertilizers and pesticides, and dramatic changes in physical living spaces within the stream itself.

USGS
April 30, 2010

GEOSMIN in South Carolina Water's, What is it?

USGS Water Quality Specialist Celeste Journey discusses Geosmin. What is it? What
causes it? and Will it harm you?

Image: Buffalo Trunkfish (Lactophrys trigonus)
March 6, 2010

Buffalo Trunkfish (Lactophrys trigonus)

The Buffalo Trunkfish (Lactophrys trigonus) is larger and less abundant than the Spotted and Smooth Trunkfishes seen frequently in the mangroves.

Close-up of manatee calf underwater
February 24, 2010

Curious manatee calf approaches scientist at Crystal River, Florida

A curious manatee calf encounters a snorkeling scientist as the USGS Sirenia Project conducts fieldwork at Crystal River National Wildlife Refuge, Florida

USGS
January 26, 2010

USGS Hydrologic Data Collection Program in North Carolina

USGS North Carolina Data Chief, Jeanne Robbins, provides an overview on hydrologic data collection techniques for North Carolina.

USGS
January 26, 2010

USGS Hydrologic Investigation of West Africa's Congo River (part one)

USGS South Carolina Water Science Center Data Chief, John Shelton in a special hydrologic expedition down the Congo River, West Africa. Part one of a three part episode, sets the stage for the trials and tribulations of water investigations for a changing world.

Image: Sinkholes in West-central Florida, Freeze Event of 2010
January 1, 2010

Sinkholes in West-central Florida, Freeze Event of 2010

More than 110 sinkholes formed in the Dover area of Florida during a freeze event in January 2010. Ground water levels dropped to record-setting lows as farmers pumped water to irrigate their plants for protection from the cold temperatures. The sinkholes destroyed homes, roads and sections of cultivated areas.

Image: Sinkholes in West-central Florida, Freeze Event of 2010
January 1, 2010

Sinkholes in West-central Florida, Freeze Event of 2010

Strawberry fields surrounded by residential housing with the irrigation pumphouse in the foreground. 

As residential areas encroach on agricultural areas, sinkholes that once only affected croplands, can now pose greater threats to communities and infrastructure. More than 110 sinkholes formed in the Dover area of Florida during a freeze event in January 2010. 

...
Image: Sinkholes in West-central Florida, Freeze Event of 2010
January 1, 2010

Sinkholes in West-central Florida, Freeze Event of 2010

Sinkholes affect structures as well as many types of supporting infrastructure such as buried utilities lines seen here. More than 110 sinkholes formed in the Dover area of Florida during a freeze event in January 2010. Ground water levels dropped to record-setting lows as farmers pumped water to irrigate their plants for protection from the cold temperatures. The

...
Image: Sinkholes in West-central Florida, Freeze Event of 2010
January 1, 2010

Sinkholes in West-central Florida, Freeze Event of 2010

More than 110 sinkholes formed in the Dover area of Florida during a freeze event in January 2010. Ground water levels dropped to record-setting lows as farmers pumped water to irrigate their plants for protection from the cold temperatures. The sinkholes destroyed homes, roads and sections of cultivated areas.

Filter Total Items: 399
USGS science for a changing world logo
September 2, 2004

Based on airborne laser mapping data acquired in cooperation with National Aeronautics and Space Administration (NASA), scientists at the U.S. Geological Survey (USGS) have estimated the coastal-change impacts that may be caused by Hurricane Frances as it makes landfall on the U.S. south Atlantic coast over the Labor Day weekend.

USGS
September 2, 2004

Based on airborne laser mapping data acquired in cooperation with National Aeronautics and Space Administration (NASA), scientists at the U.S. Geological Survey (USGS) have estimated the coastal-change impacts that may be caused by Hurricane Frances as it makes landfall on the U.S. south Atlantic coast over the Labor Day weekend.

USGS science for a changing world logo
August 4, 2004

Manatee populations are growing at healthy rates in two of four regions off Florida’s coast, but may be stalled or declining in the remaining regions, according to a recently released report by the U.S. Geological Survey.

USGS
August 4, 2004

Manatee populations are growing at healthy rates in two of four regions off Florida’s coast, but may be stalled or declining in the remaining regions, according to a recently released report by the U.S. Geological Survey.

USGS
July 14, 2004

Did you know that from your desk you can monitor the effect of this week’s heavy rains throughout the already saturated mid-Atlantic region? The U.S. Geological Survey’s (USGS) WaterWatch Web site can show you what’s happening to streams in your local area and show you the places most affected by heavy rains expected from these storms.

USGS
June 7, 2004

A new assessment of shoreline change on the Gulf of Mexico, released today by the U.S. Geological Survey, shows that 61 percent of the Gulf Coast shoreline is eroding. Some areas are losing sand more rapidly than others and some areas are actually gaining sand.

USGS science for a changing world logo
May 14, 2004

America’s rivers and streams are generally suitable for irrigation, supplying drinking water, and home and recreational uses. However, in areas with significant agricultural and urban development, the quality of our nation’s water resources has been degraded by contaminants such as pesticides, nutrients, and gasoline-related compounds.

USGS
May 14, 2004

America’s rivers and streams are generally suitable for irrigation, supplying drinking water, and home and recreational uses. However, in areas with significant agricultural and urban development, the quality of our nation’s water resources has been degraded by contaminants such as pesticides, nutrients, and gasoline-related compounds.

USGS science for a changing world logo
April 26, 2004

Farmlands, wetlands, forests and deserts that composed the American landscape in the early 20th century have frequently been transformed during the past 30 years into mushrooming metropolitan areas as urbanization spreads across the country.

USGS
April 26, 2004

Farmlands, wetlands, forests and deserts that composed the American landscape in the early 20th century have frequently been transformed during the past 30 years into mushrooming metropolitan areas as urbanization spreads across the country.

USGS science for a changing world logo
April 1, 2004

A new map from the U.S. Geological Survey and the Central United States Earthquake Consortium shows that Central States, including Arkansas, Tennessee, Missouri, Kentucky and Indiana are among the most seismically active states east of the Rocky Mountains. More than 800 earthquakes are cataloged on the map that depicts the locations of earthquakes large enough to be felt, since 1699.

USGS
April 1, 2004

A new map from the U.S. Geological Survey and the Central United States Earthquake Consortium shows that Central States, including Arkansas, Tennessee, Missouri, Kentucky and Indiana are among the most seismically active states east of the Rocky Mountains. More than 800 earthquakes are cataloged on the map that depicts the locations of earthquakes large enough to be felt, since 1699.

Follow Region 2 activities on social media, get contact information for Region 2 USGS centers, and meet Region 2's staff and center directors.