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: 364
Date published: August 2, 2018
Status: Active

Integrating Science and Management for Optimal Prevention and Control of Invasive Nymphoides in Florida

Two invasive species of floating hearts, Nymphoides cristata and N. indica, are actively managed in Florida. A rare native species, N. humboldtiana, has been found in Florida and verified by molecular methods; this species is nearly indistinguishable from N. indica.

Date published: August 1, 2018
Status: Active

Piedmont Geology Along the Southeastern Fall Zone, Virginia and North Carolina

This task within the USGS NCGMP Piedmont-Blue Ridge Project aims to fill the void in geologic map coverage along the Fall Zone in southeastern Virginia and northeastern North Carolina, and forge strong cooperative ties within the NCGMP by combining resources across all three Program components by supporting DMME and NCGS STATEMAP and UNC–W EDMAP components with targeted geologic mapping and...

Contacts: Mark W Carter
Date published: August 1, 2018
Status: Active

Wetland Forest Regeneration Dynamics and Productivity in Southeastern Cypress Swamp Ecosystems

Relict forests (i.e., forests unable to reestablish after disturbance) may develop in the southeastern U.S. in future predicted extreme climates of temperature, flooding, and drought, according to the International Panel on Climate Change.

Date published: July 23, 2018
Status: Active

Toro Negro, Puerto Rico

The USGS has installed instruments in a steep hillside northwest of the municipality of Villalba in the Toro Negro State Forest.

Contacts: Ben Mirus
Date published: July 23, 2018
Status: Active

Utuado, Puerto Rico

The USGS has installed instruments in a steep hillside east of the municipality of Utuado.

Contacts: Ben Mirus
Date published: July 19, 2018
Status: Active

Appalachian Basin Oil and Gas Assessments

The USGS has conducted numerous assessments of undiscovered oil and gas in the Appalachian Basin, including studies of the Marcellus Shale. The region extends from Alabama to Maine. The following is an overview of the assessments.

    Date published: July 18, 2018
    Status: Active

    Flood-Inundation mapping in Georgia, North and South Carolina

    The U.S. Geological Survey (USGS) has created flood-inundation maps for selected streamgage sites in Georgia, North and South Carolina. These maps depict the approximate area that would be inundated at selected water levels, ranging from approximately top-of-bank to the maximum observed water level. The inundated areas depicted on these maps are approximate, and accuracy of the maps is a...

    Date published: July 12, 2018
    Status: Active

    River WebCams of the South Atlantic Water Science Center (Georgia, North and South Carolina)

    We have installed webcams at a number of locations in Georgia, North Carolina, and South Carolina to allow you to view, in real time, the current river-stage conditions. The Georgia and South Carolina cameras allow users to temporarily control the tilt, pan, and zoom. During periods of flooding, the South Atlantic Water Science Center might take control of the camera.

    Date published: June 19, 2018
    Status: Active

    Mineral Resource Assessment of U.S. Territories of the Caribbean Basin Archipelago including Puerto Rico, U.S. Virgin Islands and Adjacent Areas

    Project objectives are to develop a modern probabilistic quantitative mineral resource assessment of Puerto Rico, U.S. Virgin Islands and adjacent geologically similar areas that examines the potential for minerals-based economic development and trade within the region.

    Contacts: Floyd Gray
    Date published: June 14, 2018
    Status: Completed

    Hurricane Matthew: Flood Resources and Tools

    During and after Hurricane Matthew, the USGS made flood-flow measurements, maintained streamgages, deployed over 390 instruments, and developed geospatial products to measure and communicate the extent of coastal and inland flooding.

    Date published: June 11, 2018
    Status: Active

    Past and Future Modeling of Ecological Indicators for the South Atlantic Landscape Conservation Cooperative

    The South Atlantic Landscape Conservation Cooperative (LCC) has developed a Conservation Blueprint: a “living spatial plan to conserve natural and cultural resources for future generations.” This blueprint is a data-driven plan based on terrestrial, freshwater, marine, and cross-ecosystem indicators to measure the overall health of South...

    Date published: June 8, 2018
    Status: Active

    Geographic Information System and Remote Sensing Support: Gulf Coast Joint Venture

    The Gulf Coast Joint Venture (GCJV) was established in 1988 as a result of the North American Waterfowl Management Plan, which espouses the restoration of continental waterfowl populations through conservation partnerships in priority habitat regions. Since that time GCJV partners have expanded their mission and purpose to include the provision of habitat to support other priority bird species...

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    Year Published: 2021

    Mangroves and people: Impacts and interactions

    Mangroves have long been associated with human populations, as coastal communities rely on the various ecosystem services that mangroves provide. However, human degradation and destruction of mangrove forests is common, despite and because of our reliance on them as valuable ecosystems. Mangrove research and management must elucidate and reconcile...

    Freiss, Daniel A; Chua, Siew Chin; Jaafer, Zeehan; Krauss, Ken; Yando, Erik S.

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    Year Published: 2021

    Red imported fire ants reduce invertebrate abundance, richness, and diversity in Gopher Tortoise burrows

    Gopher Tortoise (Gopherus polyphemus) burrows support diverse commensal invertebrate communities that may be of special conservation interest. We investigated the impact of red imported fire ants (Solenopsis invicta) on the invertebrate burrow community at 10 study sites in southern Mississippi, sampling burrows (1998–2000) before and after bait...

    Epperson, Deborah Mardeane; Allen, Craig R.; Hogan, Katharine F.E.

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    Year Published: 2021

    Effects-based monitoring of bioactive chemicals discharged to the Colorado River before and after a municipal wastewater treatment plant replacement

    Monitoring of the Colorado River near the Moab, Utah, wastewater treatment plant (WWTP) outflow has detected pharmaceuticals, hormones, and estrogen-receptor (ER)-, glucocorticoid receptor (GR)-, and peroxisome proliferator-activated receptor-gamma (PPARγ)-mediated biological activities. The aim of the present multi-year study was to assess...

    Cavallin, J.E.; Battaglin, William A.; Beihoffer, Jon; Blackwell, Bradley D.; Bradley, Paul; Cole, AR; Ekman, Drew R.; Hofer, R; Kinsey, J; Keteles, Kristen; Weissinger, R; Winkelman, Dana L.; Villeneuve, Daniel L.

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    Year Published: 2021

    Strategic habitat conservation for beach mice: Estimating management scenario efficiencies

    The Perdido Key beach mouse (Peromyscus polionotus trissyllepsis), Choctawhatchee beach mouse (P. p. allophrys), and St. Andrew beach mouse (P. p. peninsularis) are 3 federally endangered subspecies that inhabit coastal dunes of Alabama and Florida, USA. Conservation opportunities for these subspecies are limited and costly. Consequently, well‐...

    Cronin, James P.; Tirpak, Blair; Dale, Leah L; Robenski, Virginia E; Tirpak, John M.; Marcot, Bruce G.

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    Year Published: 2021

    Effective population size remains a suitable, pragmatic indicator of genetic diversity for all species, including forest trees

    Fady & Bozzano highlight some challenges to a proposed Convention on Biological Diversity (CBD) indicator of genetic diversity based on effective population size, Ne (Fady and Bozzano, 2020; Hoban et al., 2020). We appreciate the thoughtful debate and concur that genetic diversity indicators must be reliable and scalable. We fully agree...

    Hoban, Sean M.; Paz-Vinas, Ivan; Aitken, Sally; Bertola, Laura D.; Breed, Martin F; Bruford, Michael W.; Funk, W. Chris; Grueber, Catherine E.; Heuertz, Myriam; Hohenlohe, Paul A.; Hunter, Margaret; Jaffé, Rodolfo; Lopes Fernandes, Margarida; Mergeay, Joachim; Moharrek, Farideh; O’Brien, David; Segelbacher, Gernot; Vernesi, Cristiano; Waits, Lisette; Laikre, Linda

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    Year Published: 2021

    Seasonal periphyton response to low-level nutrient exposure in a least disturbed mountain stream, the Buffalo River, Arkansas

    Like most streams located in the Ozark Plateaus, the Buffalo River in Arkansas generally has excellent water quality. Water-quality conditions in Big Creek, however, a major tributary of the middle Buffalo River, have been less favorable than that of other Buffalo River tributaries. Concerns regarding the influence of water quality in Big Creek on...

    Justus, Billy; Driver, Lucas; Burge, David R. L.

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    Year Published: 2021

    The impact of ventilation patterns on calcite dissolution rates within karst conduits

    Erosion rates in streams vary dramatically over time, as differences in streamflow and sediment load enhance or inhibit erosion processes. Within cave streams, and other bedrock channels incising soluble rocks, changes in water chemistry are an important factor in determining how erosion rates will vary in both time and space. Prior studies in...

    Covington, Matthew D.; Knierim, Katherine J.; Young, Holly H; Rodriguez, Josue; Gnoza, Hannah

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    Year Published: 2021

    Small mammal responses to wetland restoration in the Greater Everglades ecosystem

    Wetlands have experienced dramatic losses in extent around the world, disrupting ecosystem function, habitat, and biodiversity. In Florida’s Greater Everglades, a massive restoration effort costing billions of dollars and spanning multiple decades is underway. As Everglades restoration is implemented in incremental projects, scientists and...

    Romanach, Stephanie; D'Acunto, Laura; Chapman, Julia; Hanson, Matthew R

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    Year Published: 2021

    A comparison of plant communities in restored, old field, and remnant coastal prairies

    Temperate grasslands are experiencing worldwide declines due to habitat conversion. Grassland restoration efforts are employed to compensate for these losses. However, there is a need to better understand the ecological effects of grassland restoration and management practices. We investigated the effects of three different grassland management...

    Feher, Laura; Allain, Larry; Osland, Michael; Pigott, Elisabeth; Reid, Christopher; Latiolais, Nicholas

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    Year Published: 2021

    Germination potential of baldcypress (Taxodium distichum) swamp soil seed bank along geographical gradients

    Changing environments of temperature, precipitation and moisture availability can affect vegetation in ecosystems, by affecting regeneration from the seed bank. Our objective was to explore the responses of soil seed bank germination to climate-related environments along geographic gradients. We collected seed banks in baldcypress (Taxodium...

    Lei, Ting; Middleton, Beth

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    Year Published: 2021

    Carrying capacity of spatially distributed metapopulations

    Carrying capacity is a key concept in ecology. A body of theory, based on the logistic equation, has extended predictions of carrying capacity to spatially distributed, dispersing populations. However, this theory has only recently been tested empirically. The experimental results disagree with some theoretical predictions of when they are...

    Zhang, Bo; DeAngelis, Don; Ni, Wei-Ming

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    Year Published: 2021

    Surface elevation change evaluation in mangrove forests using a low‐cost, rapid‐scan terrestrial laser scanner

    Mangrove forests have adapted to sea level rise (SLR) increases by maintaining their forest floor elevation via belowground root growth and surface sediment deposits. Researchers use surface elevation tables (SETs) to monitor surface elevation change (SEC) in mangrove forests, after which this information is used to assess SLR resiliency or to...

    Kargar, Ali Rouzbeh; MacKenzie, Richard A.; Fafard, Alexander; Krauss, Ken; van Aardt, Jan

    Filter Total Items: 497
    September 20, 2018

    Habitat Connectivity: Assessing Threats and IDing Conservation Actions

    An important conservation strategy for climate change is to enhance and maintain regional habitat connectivity for the long-term viability of wildlife populations. Modeling habitat connectivity for wildlife species often results in a mapped network of linkages between habitat patches. A critical next step is to determine which of those linkages are priorities for

    A hydrographer kneels in water to measure a high water mark on a wall.
    September 18, 2018

    Measuring a high water mark as flooding recedes

    USGS hydrographer Kyle Marchman measures a high water mark on the rear wall of a Kangaroo gas station on Highway 24 north of Fayetteville, NC on Sept. 18, 2018, after flooding caused by Hurricane Florence.

    USGS intern James Stonecypher measures Lumber River floodwaters
    September 17, 2018

    Measuring the Lumber River floodwaters

    James Stonecypher measures flood waters from the Lumber River that breached a dam in Lumberton, North Carolina after the passage of Hurricane Florence, Sept. 17, 2018. 

    Map of USGS streamgages at or over flood stage in NC Sept. 19, 2018
    September 16, 2018

    As Florence rains, rivers keep rising, submerging some USGS instrument

    A WaterWatch web map shows streamgages in North and South Carolina that approached or exceeded major flood stage EST on September 19, 2018, as the former Hurricane Florence, now downgraded to a tropical depression, deluged the states with rain.

    USGS scientist takes measurement in a flooded NC creek
    September 16, 2018

    Working to keep vital flood information flowing in the Carolinas

    David Stillwell, USGS hydrologic technician, performs a discharge measurement to help document and forecast flooding caused by Hurricane Florence at Long Creek in Rhyne, North Carolina on Sept. 16. 


    Image shows a USGS storm tide sensor attached to a pier
    September 10, 2018

    USGS Storm-Tide Sensor for Hurricane Florence

    A USGS storm-tide sensor, deployed in advance of Hurricane Florence's landfall. The sensors are housed in vented steel pipes a few inches wide and about a foot long. They are being installed on bridges, piers, and other structures that have a good chance of surviving the storm.

    The information the sensors collect will help define the depth and duration of a storm

    Image shows USGS scientists in PFDs collecting a seismic airgun while at sea
    September 6, 2018

    Retrieving Seismic Airguns

    USGS personnel on the deck of the R/V Hugh R. Sharp during retrieval of seismic airguns.  The streamer that receives the seismic signals generated by the airguns is towed behind the ship and is here shown

    A coral worn smooth with a badly eroded base
    August 28, 2018

    Erosion has taken a toll on this Keys coral

    A reef in the Florida Keys National Marine Sanctuary with little living coral and extensive bioerosion. Photo taken under research permit number FKNMS-2016-085-A1. Credit: USGS, Ilsa Kuffner.

    Two divers use a tripod and drill to take a coral core
    August 21, 2018

    USGS scientists drill a coral core in the Florida Keys

    Research Oceanographer Lauren Toth and student volunteer Liz Whitcher drill a coral-reef core from a reef off Key West, Florida, in the Florida Keys National Marine Sanctuary. Photo taken under research permit FKNMS-2015-058. Credit: Anastasios Stathakopoulos, USGS.

    A coral worn smooth by erosion
    June 26, 2018

    Like many Keys corals, this one has no new growth

    A modern coral reef in Dry Tortugas National Park. There is little living coral and high rates of bioerosion. Photo taken under research permit number DRTO-2018-SCI-0005. Credit: Lauren Toth, USGS

    1985-2018 Lion fish invasion. Ecosystems Mission Area. Wetlands and Aquatic Research Center
    May 16, 2018

    1985-2018 Lionfish Invasion

    Lionfish invasion (1985-2018). Lionfish invaded US Atlantic coastal waters, the Caribbean Sea, and the Gulf of Mexico with unprecedented, alarming speed. Though reports of sightings date back to the 1980s, it is only recently that the species has exploded in numbers and range. In fact, the lionfish invasion is the 

    USGS staff uses a radio to determine if an Acoustic Backscatter sensor (white circle) is still operating
    April 25, 2018

    Can you hear me now?

    Steve Suttles (USGS) uses a radio to determine if an Acoustic Backscatter sensor (white circle) is still operating at the end of the deployment.

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    Image: USGS Measures Historic Flooding Across the Nation
    January 4, 2016

    U.S. Geological Survey field crews are measuring record flooding on rivers and streams in 12 states across the country. USGS is making preparations for a prolonged field effort along the Ohio and Mississippi Rivers as major flooding will extend well into mid-to-late January, particularly along the lower Mississippi River.

    Image:  Big Sagebrush Re-establishing 15 Years Post-wildfire Along the Boise Front Mountains
    December 7, 2015

    CORVALLIS, Ore. — Ecosystem restoration is complex and requires an understanding of how the land, plants, and animals all interact with each other over large areas and over time. Today, the U.S. Geological Survey published part two of a three-part handbook addressing restoration of sagebrush ecosystems from the landscape to the site level.

    Planned US Topo map production schedule for the next three- year revision cycle
    November 19, 2015

    With the release of new US Topo maps for Illinois and South Dakota, the USGS has completed the second, three-year cycle of revising and updating electronic US Topo quadrangles. This means that since late 2009, the USGS has published nearly every map in the conterminous U.S., twice.

    November 10, 2015

    A new interactive Flood Inundation Map to improve flood warnings and assist with emergency management along Big Creek in Alpharetta and Roswell, Georgia, was debuted during a ceremony today in Alpharetta’s Rock Mill Park.

    USGS science for a changing world logo
    October 28, 2015

    Alligators and the Everglades go hand-in-hand, and as water conditions change in the greater Everglades ecosystem, gators are one of the key species that could be affected.

    USGS science for a changing world logo
    October 22, 2015

    During the historic October 2015 floods in South Carolina, 17 U.S. Geological Survey streamgages recorded the highest peak streamflow and/or river height (or stage) since those streamgages were installed. An additional 15 USGS streamgages recorded peaks in the top 5 for their periods of record.

    Image: USGS Scientist Inspects Streamgage During Flooding Event
    October 5, 2015

    Heavy rains and hazardous weather conditions are occurring in western South Carolina, with record flooding occurring and more expected over parts of the region over the next several days.

    Screenshot of portal entry page
    October 2, 2015

    As the path of Hurricane Joaquin continues to move farther offshore, making landfall in the U.S. less likely, U.S. Geological Survey coastal change experts say there’s still a high probability of dune erosion along parts of the Atlantic coast, from the North Carolina Outer Banks to Cape Cod.

    October 2, 2015

    Currently, heavy rains and hazardous weather conditions are predicted for western North Carolina and most of South Carolina by the National Weather Service, with flooding possible over parts of the region over the next several days.

    1940 legacy topographic map quadrangle of the Spring Creek area
    September 16, 2015

    Recently released US Topo maps for Florida now feature more trails using data provided by the U.S. Forest Service as well as trail information from other federal, state and private sources.

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

    Filter Total Items: 283