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: 367
Date published: November 30, 2018
Status: Completed

Black Warrior Basin Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas resources of the Black Warrior Basin Province 5065.

Date published: November 30, 2018
Status: Active

Illinois Basin Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered continuous oil and gas resources of the  Illinois Basin Province 5064.

    Date published: November 29, 2018
    Status: Active

    Gulf Coast Petroleum Systems Project - Research

    This site highlights the research on the processes that impact the formation, accumulation, occurrence, and alteration of hydrocarbon energy resources of the Gulf Coast of Mexico. The project also conducts assessments of undiscovered, technically recoverable hydrocarbon resources. The Gulf Coast Petroleum Systems Project focuses on the onshore and State waters portion of the Gulf Coast basin,...

    Date published: November 28, 2018
    Status: Active

    Natural Drought and Flood Histories from Lacustrine Archives

    Previous work performed as part of the USGS Holocene Synthesis project illuminated complex centennial-scale patterns of drought and wetter-than-average conditions across the North American continent interior during the past two millennia, where paleorecord data coverage is sparse.  In order to explain the patterns of naturally-occurring drought, floods, and storms for the past, identified by...

    Date published: November 27, 2018
    Status: Completed

    Understanding Drivers of Cyanotoxin Production in the Lake Okeechobee Waterway

    The U.S. Geological Survey (USGS) and other researchers combined field and laboratory approaches in two studies to understand the factors that drive cyanobacterial bloom development and associated cyanotoxin production in Lake Okeechobee, the St. Lucie River and Estuary, and the Indian River Lagoon in response to the large-scale Lake Okeechobee cyanobacteria bloom in 2016.

    Date published: November 12, 2018
    Status: Active

    Geological Investigations of the Neogene

    More than a third of the United States population lives in counties directly on the shoreline, making them vulnerable to hazards associated with changing sea level and storm surges associated with hurricanes and severe storms. The geologic record contains many examples of past intervals of warm climate and high sea level. "Geological Investigation of the Neogene" is examining proxy records of...

    Date published: November 1, 2018
    Status: Active

    Using Molecular Tools to Recalibrate Freshwater Mussel Taxonomy with a Focus on Imperiled Species

    Freshwater mussels of the family Unionidae, also known as naiads, pearly mussels, freshwater clams, or unionids, are a diverse group of bivalve mollusks that are distributed on every continent except Antarctica. Approximately 300 species are known from the United States, with most of this diversity residing in rivers of the Southeast where many endemic taxa have evolved.

    Date published: October 26, 2018
    Status: Active

    Blue Ridge and Inner Piedmont Geologic Mapping

    The Blue Ridge and Inner Piedmont Geologic Mapping Task (BRIP) is the western focus of geologic mapping and framework studies of the Piedmont and Blue Ridge Project. BRIP will conduct modern geologic mapping and geologic framework studies in the Wytheville, Hickory and Boone 30x60-min. sheets. Collectively, the objectives of BRIP are to (1) characterize the geologic framework of the Blue Ridge...

    Contacts: Arthur Merschat
    Date published: October 23, 2018
    Status: Completed

    Fine-scale Benthic Habitat Mapping

    Both ATRIS configurations was deployed in Dry Tortugas National Park (DRTO) to fill information gaps in the spatial coverage of existing habitat maps.

    Date published: October 11, 2018
    Status: Active

    Sea Level Rise and Climate: Impacts on the Greater Everglades Ecosystem and Restoration

    The Greater Everglades Ecosystem covers much of south Florida, and the highest areas are only a few meters above sea level.  Predictions of sea level rise and changes in storm intensity for the 21st century are particularly concerning to the urban population of Miami and the east coast, but also represent a challenge to Everglades National Park and Biscayne National Park resource...

    Date published: October 5, 2018
    Status: Active

    Coral Reef Ecosystem Studies (CREST)

    The specific objectives of this project are to identify and describe the processes that are important in determining rates of coral-reef construction. How quickly the skeletons of calcifying organisms accumulate to form massive barrier-reef structure is determined by processes of both construction (how fast organisms grow and reproduce) and destruction (how fast reefs break down by mechanical...

    Date published: September 27, 2018
    Status: Active

    Piedmont and Blue Ridge Project

    The Piedmont and Blue Ridge Project is a geologic mapping project supported by the USGS National Cooperative Geologic Mapping Program. The Piedmont Blue Ridge Project aims to understand the geologic framework and tectonic evolution of terranes and basins in the Appalachian Piedmont and Blue Ridge, and their significance for water, mineral and energy resources, natural hazards, and engineering/...

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    Year Published: 2020

    A guidebook to spatial datasets for conservation planning under climate change in the Pacific Northwest

    This guidebook provides user-friendly overviews of a variety of spatial datasets relevant to conservation and management of natural resources in the face of climate change in the Pacific Northwest, United States. Each guidebook chapter was created using a standardized template to summarize a spatial dataset or a group of closely related datasets....

    Cartwright, Jennifer M.; Cartwright, Jennifer M.; Belote, Travis; Blasch, Kyle W.; Campbell, Steve; Chambers, Jeanne C.; Davis, Raymond J.; Dobrowski, Solomon; Dunham, Jason B.; Gergel, Diana; Isaak, Daniel; Jaeger, Kristin; Krosby, Meade; Langdon, Jesse; Lawler, Joshua J.; Littlefield, Caitlin E; Luce, Charles H; Maestas, Jeremy D; Martinez, Anthony; Meddens, Arjan J.H.; Michalak, Julia; Parks, Sean A.; Peterman, Wendy; Popper, Ken; Ringo, Chris; Sando, Thomas R.; Schindel, Michael; Stralberg, Diana; Theobald, David M.; Walker, Nathan; Wilsey, Chad; Yang, Zhiqiang; Yost, Andrew

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    Year Published: 2020

    Monitoring and real-time modeling of Escherichia coli bacteria for the Chattahoochee River, Chattahoochee River National Recreation Area, Georgia, 2000–2019

    The Chattahoochee River National Recreation Area (CRNRA) is a National Park Service unit/park with 48 miles of urban waterway in the Atlanta metropolitan area. The Chattahoochee River within the CRNRA is a popular place for water-based recreation but is known to periodically experience elevated levels of fecal-coliform bacteria associated with...

    Aulenbach, Brent T.; McKee, Anna M.
    Aulenbach, B.T., and McKee, A.M., 2020, Monitoring and real-time modeling of Escherichia coli bacteria for the Chattahoochee River, Chattahoochee River National Recreation Area, Georgia, 2000–2019: U.S. Geological Survey Open-File Report 2020–1048, 43 p., https://doi.org/10.3133/ofr20201048.

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    Year Published: 2020

    Influence of soil microbiota on Taxodium distichum seedling performance during extreme flooding events

    Plant associations with soil microbiota can modulate tree seedling growth and survival via mutualistic or antagonistic interactions. It is uncertain, however, whether soil microbiota influence seedling growth of coastal trees when exposed to extreme flooding regimes. We evaluated the role of soil microbes in promoting baldcypress (Taxodium...

    Torres-Martínez, Lorena; Sánchez-Julia, Mareli; Kimbrough, Elizabeth; Hendrix, Trey; Hendrix, Miranda; Day, Richard H.; Krauss, Ken W.; Van Bael, Sunshine A

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    Year Published: 2020

    The field trip that changed the course of my career

    After gobbling down a breakfast of sliced papaya, scrambled eggs, refried beans, and soft flour tacos, we gathered our gear and loaded it into the red zodiac that the station manager had assigned to us. My colleagues and I were headed to a pair of islands off the coast of Belize called Twin Cays, occupied by a unique group of tropical plants and...

    McKee, Karen L.

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    Year Published: 2020

    The utility of zooarchaeological data to guide listing efforts for an imperiled mussel species (Bivalvia: Unionidae: Pleurobema riddellii)

    The status of species in freshwater systems shift over time due to natural and anthropogenic causes. Determining the magnitude and cause of these shifts requires a long‐term perspective. This process is complicated when there are also questions about the taxonomic validity of a species. Addressing these issues is important because both can...

    Randklev, Charles R.; Wolverton, Steve; Johnson, Nathan; Smith, Chase H.; DuBose, Traci; Robertson, Clint; Conley, Julian

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    Year Published: 2020

    A new species of freshwater mussel in the genus Popenaias Frierson, 1927, from the Gulf coastal rivers of central Mexico (Bivalvia: Unionida: Unionidae) with comments on the genus

    The Gulf coastal drainages of central Mexico are a faunal transition zone between North and South America and harbor a unique assemblage of freshwater mussels (Bivalvia: Unionida). However, little information is available regarding the taxonomy, distribution, and evolutionary history of the Mexican mussel fauna due to limited sampling over the...

    Inoue, Kentaro; Cummings, Kevin S.; Tiemann, Jeremy S.; Miller, Thomas D.; Johnson, Nathan; Smith, Chase H.; Randklev, Charles R.

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    Year Published: 2020

    Salinity, water level, and forest structure contribute to baldcypress (Taxodium distichum) rhizosphere and endosphere community structure

    As rising sea levels alter coastal ecosystems, there is a pressing need to examine the effects of saltwater intrusion on coastal communities. Using 16S Illumina profiling, we characterized the communities of baldcypress tree (Taxodium distichum) root endosphere and rhizosphere soil bacteria. Our study utilized established sites along salinity and...

    Lumibao, Candice Y; Kimbrough, Elizabeth; Formel, Steven; Day, Richard; From, Andrew; Conner, William H.; Krauss, Ken; Van Bael, Sunshine A

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    Year Published: 2020

    A comparative phylogeographic approach to facilitate recovery of an imperiled freshwater mussel (Bivalvia: Unionida: Potamilus inflatus)

    North American freshwaters are among the world’s most threatened ecosystems, and freshwater mussels are among the most imperiled inhabiting these systems. A critical aspect of conservation biology is delineating patterns of genetic diversity, which can be difficult when a taxon has been extirpated from a significant portion of its historical range...

    Smith, Chase H.; Johnson, Nathan

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    Year Published: 2020

    Comparative phylogenomics reveal complex evolution of life history strategies in a clade of bivalves with parasitic larvae (Bivalvia: Unionoida: Ambleminae)

    Freshwater mussels are a species‐rich group with biodiversity patterns strongly shaped by a life history strategy that includes an obligate parasitic larval stage. In this study, we set out to reconstruct the life history evolution and systematics in a clade of freshwater mussels adapted to parasitizing a molluscivorous host fish. Anchored hybrid...

    Smith, Chase H.; Pfeiffer, John M.; Johnson, Nathan

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    Year Published: 2020

    Hydrologic signals and surprises in U.S. streamflow records during urbanization

    Urban development has been observed to lead to variable magnitudes of change for stormflow volume and directions of baseflow change across cities. This work examines temporal streamflow trends across the flow duration curve in 53 watersheds during periods of peak urban development, which ranged from 1939 to 2016. We used U.S. Geological Survey...

    Bhaskar, Aditi S.; Hopkins, Kristina G.; Smith, Brianne K; Stephens, Tim A; Miller, Andy J

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    Year Published: 2020

    Preserving connectivity under climate and land-use change: No one-size-fits-all approach for focal species in similar habitats

    Habitat connectivity is essential for maintaining populations of wildlife species, especially as climate changes. Knowledge about the fate of existing habitat networks in a changing climate and in light of land-use change is critical for determining which types of conservation actions must be taken to maintain those networks. However, information...

    Costanza, Jennifer K.; Watling, James I.; Sutherland, Ron; Belyea, Curtis; Dilkina, Bistra; Cayton, Heather; Bucklin, David N.; Romanach, Stephanie; Haddad, Nick M.

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    Image from a video camera shooting for 10 minutes tracks the darkest pixels through that time.
    November 8, 2018

    Isla Verde Video Camera 2 Dark Image

    Dark image of Isla Verde in San Juan, Puerto Rico, from a coastal video monitoring station. Image is compiled from 10 minutes of video and tracks the darkest pixels through 10 minutes of motion.

    Image from a video camera shooting for 10 minutes tracks the darkest pixels through that time.
    November 8, 2018

    Isla Verde Video Camera 3 Dark Image

    Dark image of Isla Verde in San Juan, Puerto Rico, from a coastal video monitoring station. Image is compiled from 10 minutes of video and tracks the darkest pixels through 10 minutes of motion.

    Image from a video camera shooting for 10 minutes tracks the darkest pixels through that time.
    November 8, 2018

    Isla Verde Video Camera 4 Dark Image

    Dark image of Isla Verde in San Juan, Puerto Rico, from a coastal video monitoring station. Image is compiled from 10 minutes of video and tracks the darkest pixels through 10 minutes of motion.

    A man stands near cameras mounted on a pole, on top of a building, with a beach in the background.
    November 6, 2018

    Video camera setup at Isla Verde

    Shawn Harrison stands near video cameras on top of a building overlooking Isla Verde in San Juan, Puerto Rico. The cameras measure wave run-up and flooding as part of a study in response to Hurricane Irma and Hurricane Maria.

    View from atop a building looks down on a sandy beach with a rainbow, palm tree just below view, and buildings in distance.
    November 5, 2018

    Isla Verde, San Juan, Puerto Rico

    The urban reef at Isla Verde supports various species of protected corals, sea turtles, and crustaceans, as well as many Caribbean fish. It also protects the International Airport and numerous homes and resorts on the coast.

    A broken foundation where the Cape San Blas house stood
    November 4, 2018

    A broken slab is all that's left of Fish Inn after Hurricane Michael

    A broken concrete foundation and some shattered floor tiles were all that remained of the sea turtle researchers' field station and home base after Category Four Hurricane Michael struck Cape San Blas on Oct. 10, 2018.

    Shallow, underwater photo of a reef with various species of corals growing on the rocky substrate.
    November 1, 2018

    Wave-tide gauge off San Juan

    A wave-tide gauge, pictured here on a coral reef among sea rods, brain corals, and sea fans, is installed off Isla Verde in San Juan, Puerto Rico.

    October 24, 2018

    Image of the Week - Hurricane Michael

    Hurricane Michael made landfall in the Florida Panhandle on October 10, 2018.

    Landsat 7 images captured before and after highlight the destructive path of the Category 4 storm.

    Mexico Beach was all but demolished, with homes left in heaps by wind and storm surge. The green leaves that pop in the September image are stripped from trees by October, and the dull

    Photo of a scientist explaining how bathymetric data is collected using PWCs to a group of children
    October 19, 2018

    Children watch a scientist explain data collection at the Science Fest

    Children at the Science Festival in St. Petersburg, Florida, watch as a scientist explains how personal watercraft are used to collect bathymetric data.

    Two oceanographers look at a coral core stored in a wooden box
    October 18, 2018

    Coral cores like this one reveal geologic history of Keys reefs

    USGS Research Oceanographer Lauren Toth and Oceanographer Anastasios Stathakopoulos study a coral-reef core in the USGS’s Core Archive in St. Petersburg, Florida. Photo: Dominique Gallery, USGS.

    Satellite image showing how Hurricane Michael affected Florida.
    October 16, 2018

    Hurricane Michael Batters Florida Panhandle

    Landsat 7 images captured before and after highlight the destructive path of the Category 4 storm.

    A deeply eroded sand dune at Cape San Blas, Florida
    October 16, 2018

    Hurricane Michael cut deep into Panhandle dunes

    A deeply eroded sand dune on the beach at Cape San Blas shows Hurricane Michael's impact on parts of the Florida Panhandle shoreline.

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    Hurricane Matthew satellite image that shows the large storm approaching the coastline of Florida.
    October 6, 2016

    USGS is engaged in research, monitoring, sampling and coastal change forecasting associated with Hurricane Matthew from Florida north up into Virginia.

    To learn about storm sensors and see their location, explore the USGS Coastal Change Hazard Portal, or see satellite imagery before and after the storm, visit the USGS Hurricane Matthew page.

    October 6, 2016

    As the east coast prepares for Hurricane Matthew's arrival, the U.S. Geological Survey uses advanced models to forecast the coastal impacts Matthew could bring. 

    Storm-tide sensor
    October 5, 2016

    Media interested in going out with USGS field crews deploying sensors please contact:

    Florida: Richard Kane, rkane@usgs.gov, 813-918-1275 

    Georgia: Brian McCallum, bemccall@usgs.gov, 678- 924-6672

    South Carolina: John Shelton, jmshelto@usgs.gov, 803-767-5542

    North Carolina: Jeanne Robbins, jrobbins@usgs.gov, 919-571-4017 

    USGS: Science for a changing world
    September 6, 2016

    Threats to groundwater availability and sustainability in the Northern Atlantic Coastal Plain are dependent to a large degree by the type of aquifers used for water supply, according to a new regional assessment by the U.S. Geological Survey.

    two men standing near a well. Truck-mounted rig and well head visible.
    August 29, 2016

    TECHNICAL ANNOUNCEMENT: Monitoring, verification and accounting are key parts to demonstrating the feasibility or success of integrated carbon capture and storage technologies.

    Catawba rhododendron blooming at Round Bald, NC
    August 11, 2016

    “From the mountains to the coast, the southeastern U.S. contains ecosystems that harbor incredible biodiversity. Many of those ecosystems are already highly at risk from urbanization and other human land-use change. Identifying the ecosystems at risk from climate change will help inform conservation and management to ensure we don’t lose that biodiversity.” (Jennifer Constanza, report author)

    Image: Methane Seeps along Offshore Virginia
    June 16, 2016

    Recent scientific work has confirmed the source, composition and origin of methane seeps on the Atlantic Ocean seafloor, discovered in 2012, where scientists never expected them to be.

    As US models predicted Hurricane Joaquin washed out a road at Kitty Hawk, NC in 2015.
    June 1, 2016

    New USGS models help predict storm effects on beaches

    As the 2016 hurricane season opens, weather forecasters, emergency managers and coastal residents have access to tools developed by the U.S. Geological Survey that predict, more precisely than ever, where beach erosion and beachfront flooding will take place during hurricanes and other storms.


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

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