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: 365
Date published: March 30, 2018
Status: Active

The Florida Coastal Mapping Program

The Florida Coastal Mapping Program (FCMaP) is an initiative between Federal and Florida State agencies and institutions to coordinate and facilitate the collection and accessibility of Florida coastal seafloor data in order to fill priority areas and gaps.

Contacts: Xan Fredericks, James Flocks, Chery Hapke, Ph.D., Kim Jackson, James Garey, Ph.D.
Date published: March 20, 2018
Status: Active

Coastal Change

The continued devastation from recent hurricanes and tropical storms demonstrates the vulnerability of coastal communities to coastal-change hazards. Changes in sea level and storm-wave intensity are changing the areas that are prone to erosion and storm-related flooding. The Hazards Vulnerability Team has worked with USGS coastal researchers and partners to improve our understanding of...

Date published: March 12, 2018
Status: Active

Brazilian Agencies Partner With USGS On Water Programs

The USGS International Programs Office has intermittentantly collaborated with Brazil's Geological Survey (CPRM) since the early 1970's. With the creation of the Brazilian National Water Agency (ANA), Brazil's hydrologic monitoring network has taken on a higher socioeconomic importance. 

The collaboration agreements between USGS and ANA/CPRM have strengthened the Brazilian streamgaging...

Contacts: Brian McCallum
Date published: February 28, 2018
Status: Active

Measuring Coral Growth to Help Restore Reefs

It is critical to start measuring calcification rates in a systematic way now, particularly at subtropical latitudes where conditions fluctuate seasonally, so that we can understand how dynamic ocean conditions affect calcifying organisms today and predict possible changes in the future. We established a calcification monitoring network in the Florida Keys and have been measuring calcification...

Date published: February 27, 2018
Status: Active

Paleoceanographic Proxy Calibration

A sediment trap time series in the northern Gulf of Mexico is used to better assess the control of environmental variables (e.g., temperature and salinity) on the flux of both microfossils and molecular fossils to the sediments. The information gained from sediment trap studies is used to develop better proxy-based estimates of past oceanographic conditions from analyses of microfossils and ...

Date published: February 22, 2018
Status: Active

Climate and Environmental Change in the Gulf of Mexico and Caribbean

This project documents paleoceanographic, climatic, and environmental changes in the Gulf of Mexico and adjacent land areas over the last 10,000 years. The paleoenvironmental data is used to determine rates of change in the past, and to better understand both the natural and anthropogenic factors that contribute to climate variability on inter-annual to millennial timescales.

Date published: February 7, 2018
Status: Active

Relative Sensitivity of Adult Mosquitoes and Butterflies to Adult Mosquito Control Pesticides

Mosquito control on Department of the Interior (DOI) managed lands is a resource management challenge. The pesticides used to control mosquitoes may also affect nontarget organisms whose conservation is one of the primary responsibilities of resource managers.

Date published: January 29, 2018
Status: Active

Groundwater/Surface Water Interaction near Ellerbe Creek, Durham, NC

Falls Lake has been included in the North Carolina Division of Water Quality’s 303(d) list of “impaired” waters, due to violations of the State chlorophyll-a standard caused by excessive nutrient inputs (North Carolina Department of Environment and Natural Resources, Division of Water Quality, 2010a).  The North Carolina Environmental Management Commission has adopted nutrient management...

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Year Published: 2020

Effects of water level alteration on carbon cycling in peatlands

Globally, peatlands play an important role in the carbon (C) cycle. High water level is a key factor in maintaining C storage in peatlands, but water levels are vulnerable to climate change and anthropogenic disturbance. This review examines literature related to the effects of water level alteration on C cycling in peatlands to summarize new...

Zhong, Yehui; Ming, Jiang; Middleton, Beth

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Year Published: 2020

SurfRCaT: A tool for remote calibration of pre-existing coastal cameras to enable their use as quantitative coastal monitoring tools

The Surf-camera Remote Calibration Tool (SurfRCaT) is a Python-based software application to calibrate and rectify images from pre-existing video cameras that are operating at coastal sites in the United States. The software enables remote camera calibration and subsequent image rectification by facilitating the remote-extraction of ground control...

Conlin, Matthew P.; Adams, Peter N; Wilkinson, Benjamin; Dusek, Gregory; Palmsten, Margaret Louise; Brown, Jenna A.

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Year Published: 2020

A global biophysical typology of mangroves and its relevance for ecosystem structure and deforestation

Mangrove forests provide many ecosystem services but are among the world’s most threatened ecosystems. Mangroves vary substantially according to their geomorphic and sedimentary setting; while several conceptual frameworks describe these settings, their spatial distribution has not been quantified. Here, we present a new global mangrove...

Thorley, Julia; Worthington, Thomas A.; zu Ermgassen, Philine S.E.; Friess, Daniel A.; Krauss, Ken; Lovelock, Catherine E.; Tingey, Rick; Woodroffe, Colin D.; Bunting, Pete; Cormier, N.; Lagomasino, David; Lucas, Richard; Murray, Nicholas J.; Sutherland, William J.; Spalding, Mark

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Year Published: 2020

Genetic diversity targets and indicators in the CBD post-2020 Global Biodiversity Framework must be improved

The 196 parties to the Convention on Biological Diversity (CBD) will soon agree to a post-2020 global framework for conserving the three elements of biodiversity (genetic, species, and ecosystem diversity) while ensuring sustainable development and benefit sharing. As the most significant global conservation policy mechanism, the new CBD framework...

Hoban, Sean M.; Bruford, Michael W.; D'Urban Jackson, Josephine; Lopes-Fernandes, Margarida; Heuertz, Myriam; Hohenlohe, Paul A.; Sjögren-Gulve, Per; Segelbacher, Gernot; Vernesi, Cristiano; Aitken, Sally; Bertola, Laura D.; Bloomer, Paulette; Breed, Martin; Rodríguez-Correa, Hernando; Funk, W. Chris; Grueber, Catherine E.; Hunter, Margaret; Jaffe, Rodolfo; Liggins, Libby; Mergeay, Joachim; Moharrek, Farideh; O'Brien, David; Ogden, Rob; Palma-Silva, Clarisse; Paz-Vinas, Ivan; Pierson, Jennifer; Ramakrishnan, Uma; Simo-Droissart, Murielle; Tani, Naoki; Waits, Lisette; Laikre, Linda

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Year Published: 2020

Identifying mangrove-coral habitats in the Florida Keys

Coral reefs are degrading due to many synergistic stressors. Recently there have been a number of global reports of corals occupying mangrove habitats that provide a supportive environment or refugium for corals, sheltering them by reducing stressors such as oxidative light stress and low pH. This study used satellite imagery and manual ground-...

Kellogg, Christina A.; Moyer, Ryan P.; Jacobsen, Mary; Yates, Kimberly K.

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Year Published: 2020

Mangrove blue carbon in the face of deforestation, climate change, and restoration

Coastal wetlands have disproportionately high carbon densities, known as blue carbon, compared to most terrestrial ecosystems. Mangroves and their blue carbon stocks are at risk globally from land‐use and land‐cover change (LULCC) activities such as aquaculture, alongside biophysical disturbances such as sea‐level rise and cyclones. Global...

Friess, Daniel A.; Krauss, Ken; Taillardat, Pierre; Adame, Maria Fernanda; Yando, Erik S.; Cameron, Clint; Sasmito, Sigit D.; Sillanpaa, Meriadec

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Year Published: 2020

Cliff Feature Delineation Tool and Baseline Builder version 1.0 user guide

Coastal cliffs constitute 80 percent of the world’s coastline, with seacliffs fronting a large proportion of the U.S. West Coast shoreline, particularly in California. Erosion of coastal cliffs can threaten infrastructure and human life, yet the spatial and temporal scope of cliff studies have been limited by cumbersome traditional methods that...

Seymour, Alexander C.; Hapke, Cheryl J.; Warrick, Jonathan
Seymour, A.C., Hapke, C.J., and Warrick, J., 2020, Cliff Feature Delineation Tool and Baseline Builder version 1.0 user guide: U.S. Geological Survey Open File Report 2020–1070, 54 p., https://doi.org/10.3133/ofr20201070.

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Year Published: 2020

Trait‐based variation in host contribution to pathogen transmission across species and resource supplies

Two key knowledge gaps currently limit the development of more predictive and general models of pathogen transmission: (1) the physiological basis of heterogeneity in host contribution to pathogen transmission (reservoir potential) remains poorly understood, and (2) a general means of integrating the ecological dynamics of host communities has yet...

Welsh, Miranda E; Cronin, James P.; Mitchell, Charles E.

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Year Published: 2020

Moving from decision to action in conservation science

Biodiversity loss is a major threat to the integrity of ecosystems and is projected to worsen, yet the path to successful conservation remains elusive. Decision support frameworks (DSFs) are increasingly applied by resource managers to navigate the complexity, uncertainty, and differing socio-ecological objectives inherent to conservation problems...

Wright, Alexander; Bernard, Riley F; Mosher, Brittany A.; O'Donnell, Katherine; Braunagel, Taylor; DiRenzo, Graziella V.; Fleming, Jillian Elizabeth; Shafer, Charles; Brand, Adrianne B.; Zipkin, Elise F.; Campbell Grant, Evan H.

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Year Published: 2020

Batrachochytrium salamandrivorans (Bsal) not detected in an intensive survey of wild North American amphibians

The salamander chytrid fungus (Batrachochytrium salamandrivorans [Bsal]) is causing massive mortality of salamanders in Europe. The potential for spread via international trade into North America and the high diversity of salamanders has catalyzed concern about Bsal in the U.S. Surveillance programs for invading pathogens must initially meet...

Waddle, Hardin; Grear, Daniel A.; Mosher, Brittany; Campbell Grant, Evan H.; Adams, Michael J.; Backlin, Adam R.; Barichivich, William; Brand, Adrianne B.; Bucciarelli, Gary M.; Calhoun, Daniel L.; Chestnut, Tara; Davenport, Jon M.; Dietrich, Andrew E.; Fisher, Robert N.; Glorioso, Brad; Halstead, Brian J.; Hayes, Marc P; Honeycutt, R. Ken; Hossack, Blake R.; Kleeman, Patrick M.; Lemos-Espinal, Julio A; Lorch, Jeffrey M.; Atkinson, Robert W.; Muths, Erin L.; Pearl, Christopher; Richgels, Katherine; Robinson, Charles W; Roth, Mark F.; Rowe, Jennifer; Sadinski, Walter; Sigafus, Brent H.; Stasiak, Iga; Sweet, Samuel; Walls, Christopher B.; Watkins-Colwell, Gregory J; White, C. LeAnn; Williams, Lori A; Winzeler, Megan E.

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Year Published: 2020

Novel molecular resources to facilitate future genetics research on freshwater mussels (Bivalvia: Unionidae)

Molecular data have been an integral tool in the resolution of the evolutionary relationships and systematics of freshwater mussels, despite the limited number of nuclear markers available for Sanger sequencing. To facilitate future studies, we evaluated the phylogenetic informativeness of loci from the recently published anchored hybrid...

Johnson, Nathan; Smith, Chase H.

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Year Published: 2020

Repurposing a hindcast simulation of the 1926 Great Miami Hurricane, south Florida

Hydrodynamic model hindcasts of the surface water and groundwater of the Everglades and the greater Miami, Florida, area were used to simulate hydrology using estimated storm surge height, wind field, and rainfall for the Great Miami Hurricane (GMH), which struck on September 18, 1926. Ranked estimates of losses from hurricanes in inflation-...

Krohn, M. Dennis; Swain, Eric D.; Langtimm, Catherine A.; Obeysekera, Jayantha
Krohn, M.D., Swain, E.D., Langtimm, C.A., and Obeysekera, J., 2020, Repurposing a hindcast simulation of the 1926 Great Miami Hurricane, south Florida: U.S. Geological Survey Open-File Report 2020–1010, 9 p., https://doi.org/10.3133/ofr20201010.

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A cinderblock with monitoring devices on it sits in shallow water on a reef with corals growing on it and off in the distance.
December 31, 2017

Elkhorn coral in Biscayne National Park

The CMHRP is testing the calcification rates of different genetic strains of threatened Elkhorn coral (Acropora palmata) to advise local and Federal agencies engaged in coral reef restoration. Elkhorn coral is the sole Florida-Caribbean species responsible for creating the reef crest, which is the geological feature responsible for protecting shorelines from wave

Three panels. Left: overhead view of ocean and breakers. Middle and right: Seafloor maps: dark blue deep, light blue shallow.
December 31, 2017

Estimated and measured bathymetry offshore of Madeira Beach, Florida

Estimated and measured ocean depths (bathymetry) from Madeira Beach, Florida. Each panel shows same geographic area. m = meters. Left: Snapshot transformed from original oblique camera view to overhead “map” view. Middle: Bathymetry estimated by applying cBathy algorithm to July 2017 video imagery. Right: Bathymetry measured with sonar in February 2017. Despite being based

UV light makes a desmid alga show up in red, yellow and purple
December 15, 2017

Ultraviolet light gives desmid alga cell a bright red glow


Illuminated with ultraviolet light, this living desmid cell has a bright red chloroplast. USGS biologist Barry H. Rosen, an expert on aquatic microorganisms, takes exquisite microscopic photos as part of his study of these single-celled green algae, which he has collected in a nearly pristine area of the northern Everglades. This cell got smooshed (the technical

November 24, 2017

Serene Sirens: USGS Sea Cow Science

A USGS video about manatees reveals that while the animals may act like the cows of the sea, they also have more than a bit of the magical siren or mermaid about them.  Go for a serene swim.

September 30, 2017

USGS Hurricane Preparedness

Before a hurricane, USGS Scientists undertake a data collection effort of a grand scale. They install a temporary mobile network of sensors along the coasts to collect additional data on the intensity of storm surge, one of the most dangerous elements of a hurricane. This effort provides critical information that allows various USGS partners and emergency responders to

September 29, 2017

Image of the Week - Puerto Rico after Hurricane Maria

Landsat 8 imagery shows the change in vegetation on Puerto Rico after Hurricane Maria.

At the USGS EROS Center, we study land change, operate the Landsat satellites, and maintain the longest, continuously acquired collection of images of the Earth's land surface.

USGS EROS Center (https://eros.usgs.gov/)

September 19, 2017

Image of the Week - Irma Churns Up Sediment in the Florida Keys

Hurricane Irma churned up sediment around the Florida keys as shown by these Landsat images.

At the USGS EROS Center, we study land change, operate the Landsat satellites, and maintain the longest, continuously acquired collection of images of the Earth's land surface.

USGS EROS Center (https://eros.usgs.gov/

Satellite image showing the damage from Irma on the Florida Keys.
September 14, 2017

Irma Churns Up Sediment in the Florida Keys

Hurricane Irma crossed the Florida Keys the morning of September 10, 2017, as a Category 4 hurricane with winds of 130 miles per hour. Besides damage done to structures on the islands, the storm also stirred the waters.

A natural color Landsat image acquired four days after the storm contrasts with an image

Flooding on Atlantic Avenue in Garden City, SC
September 11, 2017

Flooding on Atlantic Avenue in Garden City, SC

That photo is of Atlantic Avenue in Garden City, South Carolina on September 11.

Photomicrograph of a green desmid alga resembling a holiday ornament
August 31, 2017

A natural marvel in a single cell

This single-celled freshwater algae wasa collected as part of the first-ever study of the green algae family called desmids in Florida’s Loxahatchee National Wildlife Refuge, in the northern Everglades. USGS biologist Barry H. Rosen, an expert on freshwater algae who leads the study, used a technique called differential interference microscopy to highlight the relief of

Photomicrograph of a pale green lace-like desmid alga
August 31, 2017

A glimpse of the microbial world's hidden beauty

To collect, identify and document these single-celled algae called desmids, USGS biologist Barry H. Rosen has traveled by airboat into the interior of Florida’s Loxahatchee National Wildlife Refuge, where decaying marsh grasses created a mosaic of peat soils and the soft, slightly acidic water where desmids grow. Rosen thinks the area may have some of the world’s greatest

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USGS science for a changing world logo
March 20, 2015

GAINESVILLE, Fla. – – Nearly 80 percent of radio-tracked marsh rabbits that died in Everglades National Park in a recent study were eaten by Burmese pythons, according to a new publication by University of Florida and U.S. Geological Survey researchers.

Image: Kelp Greenling Among Seafloor Cover of Mixed Composition
March 18, 2015

Thousands of photos and videos of the seafloor and coastline—most areas never seen before—are now available and easily accessible online. This is critical for coastal managers to make important decisions, ranging from protecting habitats to understanding hazards and managing land use.

March 12, 2015

Vital coastal storm-tide information needed to help guide storm response efforts following major storms affecting North Carolina will be more accessible than ever due to a new monitoring network the U.S. Geological Survey is currently building.

February 24, 2015

The first section of a seepage barrier designed to prevent catastrophic failure of the 143-mile Herbert Hoover Dike around Lake Okeechobee, Florida may have unintentionally caused changes in the salinity of portions of the shallow aquifer near the lake, according to a new U.S. Geological Survey report.

December 18, 2014

Secretary of the Interior Sally Jewell announced today that Interior’s Southeast Climate Science Center is awarding nearly $150,000 to its host university and other partners for research to guide managers of parks, refuges and other cultural and natural resources in planning how to help species and ecosystems adapt to climate change.

Image: Louisiana Black Bear and Cubs
November 19, 2014

The bear species nicknamed “teddy” more than a century ago that inspired the iconic stuffed toy still popular today will likely survive at least another century, according to a new U.S. Geological Survey study. 

November 12, 2014

A study designed to provide baseline information on groundwater quality in Lee and Chatham counties prior to oil and gas exploration there found low levels of dissolved methane gas and a small percentage of wells with other constituents at levels exceeding federal and state drinking water standards, according to a new study by the U.S. Geological Survey.

November 12, 2014

Groundwater contamination that was first detected in Chesterfield County in the early 2000s has been linked to historical agricultural land use, according to a recent U.S. Geological Survey study.

2014 US Topo map of the Florence, Alabama
October 22, 2014

This new design was launched earlier this year and is now part of the new US Topo quadrangles for Alabama (840 maps), replacing the first edition US Topo maps for the states.

Image: Bent Sea Rod Bleaching
September 9, 2014

Late-summer water temperatures near the Florida Keys were warmer by nearly 2 degrees Fahrenheit in the last several decades compared to a century earlier, according to a new study by the U.S. Geological Survey.

August 6, 2014

June and July rainfall deficits continue to point toward abnormally dry to moderate drought conditions in the Commonwealth of Puerto Rico, according to the U.S. Geological Survey.

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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