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: 5,373
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Year Published: 2020

Upwelling buffers climate change impacts on coral reefs of the eastern tropical Pacific

Corals of the eastern tropical Pacific live in a marginal and oceanographically dynamic environment. Along the Pacific coast of Panamá, stronger seasonal upwelling in the Gulf of Panamá in the east transitions to weaker upwelling in the Gulf of Chiriquí in the west, resulting in complex regional oceanographic conditions that drive differential...

Randall, Carly J.; Toth, Lauren T.; Leichter, James J; Mate, Juan L; Aronson, Richard B.

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Year Published: 2020

Enhanced El Niño-Southern Oscillation variability in recent decades

The El Niño–Southern Oscillation (ENSO) represents the largest source of year-to-year global climate variability. While Earth system models suggest a range of possible shifts in ENSO properties under continued greenhouse gas forcing, many centuries of preindustrial climate data are required to detect a potential shift in the properties of recent...

Grothe, Pamela R.; Cobb, Kim M.; Liguori, Giovanni; Di Lorenzo, Emanuele; Capotondi, Antonietta; Lu, Yanbin; Cheng, Hai; Edwards, R. Lawrence; Southon, John R.; Santos, Guaciara M.; Decampo, Daniel M.; Lynch-Stieglitz, Jean; Chen, Tianran; Sayani, Hussein R.; Thompson, Diane M.; Conroy, Jessica L.; Moore, Andrea L.; Townsend, Kayla; Hagos, Melat; O’Connor, Gemma; Toth, Lauren T.

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Year Published: 2020

Mapping climate change resistant vernal pools in the northeastern U.S.

Vernal pools are seasonal wetlands that provide important breeding habitat for a variety of amphibian species. As future climate projections indicate warmer growing seasons and earlier seasonal increases in evapotranspiration, some managers of vernal pools have expressed concern that pools may dry earlier in the season, potentially interfering...

Cartwright, Jennifer M.; Campbell Grant, Evan H.

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Year Published: 2019

Spatially referenced models of streamflow and nitrogen, phosphorus, and suspended-sediment loads in the southeastern United States

Spatially Referenced Regression On Watershed attributes (SPARROW) models were applied to describe and estimate mean-annual streamflow and transport of total nitrogen (TN), total phosphorus (TP), and suspended sediment (SS) in streams and delivered to coastal waters of the southeastern United States on the basis of inputs and management practices...

Hoos, Anne B.; Roland II, Victor L.
Hoos, A.B., and Roland, V.L. II, 2019, Spatially referenced models of streamflow and nitrogen, phosphorus, and suspended-sediment loads in the Southeastern United States: U.S. Geological Survey Scientific Investigations Report 2019–5135, 91 p., https://doi.org/10.3133/sir20195135.

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Year Published: 2019

Louisiana Coastal Zone sediment characterization; Comparison of sediment grain sizes for samples collected in 2008 and 2015–2016 from the western Chenier plain to the Chandeleur Islands, Louisiana—Louisiana Barrier Island Comprehensive Monitoring (BICM) Program

Repeated sampling and grain-size analysis of surficial sediments along the sandy shorelines of Louisiana is necessary to characterize coastal-zone sediment properties and evaluate sediment transport patterns within the nearshore environments. In 2008, and again in 2015 and 2016, sediment grab samples were collected along the shorelines of the...

Bosse, Stephen T.; Flocks, James G.; Bernier, Julie C.; Georgiou, Ioannis Y.; Kulp, Mark A.; Brown, Michael
Bosse, S.T., Flocks, J.G., Bernier, J.C., Georgiou, I.Y., Kulp, M.A., and Brown, M., 2019, Louisiana Coastal Zone sediment characterization; Comparison of sediment grain sizes for samples collected in 2008 and 2015–2016 from the western Chenier plain to the Chandeleur Islands, Louisiana—Louisiana Barrier Island Comprehensive Monitoring (BICM) Program: U.S. Geological Survey Open-File Report 2019–1132, 17 p., https://doi.org/10.3133/ofr20191132.

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Year Published: 2019

Council monitoring and assessment program (CMAP) compilation of existing habitat and water quality monitoring and mapping assessments for the Gulf of Mexico Region

This report is a deliverable to the RESTORE Council for Task 7: Document the existing baseline habitat and water quality conditions prior to implementation of the restoration projects; these baseline conditions will serve as a basis for measuring change/progress after restoration. It is the second in a series of CMAP reports. The first report...

Bosch, Julie; Burkart, Heidi; Chivoiu, Bogdan; Clark, Randy; Clement, Chris; Enwright, Nicholas; Giordano, Steve; Jeffrey, Chris; Johnson, Ed; Hart, Rheannon M.; Davidson Hile, Sarah; Howell, Jacob; Laurenzano, Claudia; Lee, Michael T.; McCloskey, Terrence A.; McTigue, Terry; Meyers, Michelle B.; Mize, Scott V.; Monaco, Mark E.; Owen, Kevin; Rebich, Richard A.; Rendon, Samuel H.; Robertson, Ali; Sample, Thomas; Steyer, Gregory D.; Suir, Kevin J.; Swarzenski, Christopher M.; Watson, Katie

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Year Published: 2019

Quantifying changes to infaunal communities associated with several deep-sea coral habitats in the Gulf of Mexico and their potential recovery from the DWH oil spill

Extensive information is available about infaunal soft-sediment communities in the Gulf of Mexico (Gulf) (Pequegnat et al. 1990, Rowe and Kennicutt II 2009, Wei et al. 2010), particularly from the large-scale sampling effort of the Deep Gulf of Mexico Benthos (DGOMB) project in the early 2000s (Rowe and Kennicutt II 2009). Infaunal soft-sediment...

Bourque, Jill R.; Demopoulos, Amanda W.J.

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Year Published: 2019

Cultivating future environmental stewards: A case study at John D. MacArthur Beach State Park

Our study supports previous research suggesting that participation in citizen-science programs can significantly enhance student learning and attitudes about science, while simultaneously promoting environmental stewardship. Providing students with the opportunity to collect scientific data through citizen-science programs can increase their...

Frehm, Veronica L.; Gravinese, Philip M.; Toth, Lauren T.

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Year Published: 2019

Scientist’s guide to developing explanatory statistical models using causal analysis principles

Recent discussions of model selection and multimodel inference highlight a general challenge for researchers, which is how to clearly convey the explanatory content of a hypothesized model or set of competing models. The advice from statisticians for scientists employing multimodel inference is to develop a well‐thought‐out set of candidate models...

Grace, James B.; Irvine, Kathryn

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Year Published: 2019

Simulation of groundwater flow and chloride transport in the “1,500-foot” sand, “2,400-foot” sand, and “2,800-foot” sand of the Baton Rouge area, Louisiana

Groundwater withdrawals since the 1940s have lowered water levels, altered groundwater-flow directions, and caused saltwater to intrude within some freshwater-containing sands of the fluvial-deltaic Southern Hills regional aquifer system beneath Baton Rouge, Louisiana. New interpretations of stratigraphic correlations amongst geophysical well logs...

Heywood, Charles E.; Lindaman, Maxwell A.; Lovelace, John K.
Heywood, C.E., Lindaman, M., and Lovelace, J.K., 2019, Simulation of groundwater flow and chloride transport in the “1,500-foot” sand, “2,400-foot” sand, and “2,800-foot” sand of the Baton Rouge area, Louisiana: U.S. Geological Survey Scientific Investigations Report 2019–5102, 49 p., https://doi.org/10.3133/sir20195102.

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Year Published: 2019

Plot Locator: An app for locating plots in the field

PREMISE: One of the challenges in field biology is locating previously sampled plots. The Plot Locator app was developed to assist field biologists with plot identification and location, with or without GPS or online connectivity. METHODS AND RESULTS: The Plot Locator Android app helps users locate field plots by creating a searchable database...

Boudell, Jere ; Middleton, Beth

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Year Published: 2019

Using maintenance records from a long-term sensor monitoring network to evaluate the relationship between maintenance schedule and data quality

Sensor-based environmental monitoring networks are beginning to provide the large-scale, long-term data required to address important fundamental and applied questions in ecology. However, the data quality from deployed sensors can be difficult and costly to ensure. In this study, we use maintenance records from the 12-year history of Louisiana’s...

Schoolmaster, Donald; Piazza, Sarai

Filter Total Items: 498
An alligator rest on exposed limestone bedrock, sunning itself.
March 16, 2008

Alligator Resting in Afternoon Sun

Alligators are very abundant in the freshwater wetlands of Everglades National Park and can usually be seen along the Anhinga trail in the park, especially when water levels are low.  This ~5-foot gator is resting on exposed limestone bedrock alongside the trail.  

Image: An Endangered Red Hawksbill Sea Turtle Swims Over a Threatened Elkhorn Coral in Virgin Islands National Park
January 29, 2008

An Endangered Red Hawksbill Sea Turtle Swims Over a Threatened Elkhorn Coral in Virgin Islands National Park

This photo shows an endangered hawksbill (Eretmochelys imbricata) swimming over a colony of elkhorn coral (Acropora palmata).

USGS scientists are doing research on sea turtles and corals in Florida and the US Virgin Islands.

Satellite image showing a fire.
April 19, 2007

Georgia Fires, USA

The Georgia Fire consisted of two fires, the Sweat Farm Road fire and the Big Turnaround fire. The fires were located 10 miles (16 kilometers) southwest of Waycross, Georgia, and were separated by Swamp Road. The Sweat Farm Road fire, which began on April 16, 2007, burned more than 87 square miles (140 square kilometers) of forest and swampland in southeast Georgia.

Atlanta, Georgia: Impervious areas affect rainfall runoff, flooding, and water quality
December 31, 2005

Impervious areas affect rainfall runoff, flooding, and water quality.

Impervious areas can affect precipitation runoff and flooding, and water quality

If you are not familiar with the term "impervious surface," this picture of a typical landscape in suburban Atlanta, Georgia, USA, will help explain it. As cities grow and more development occurs, the natural landscape is replaced by roads, buildings, housing

...
Debris and trees clog upstream part of a highway bridge crossing Peachtree Creek, Atlanta, Ga.
July 10, 2003

Peachtree Creek, Atlanta, Ga. Debris from floods cause bridge problems

Peachtree Creek at Atlanta (USGS 02336300) Water Monitoring Site

Floods are powerful natural mechanisms that can move large amounts of debris seemingly easily. This picture shows the upstream side of a major highway bridge crossing Peachtree Creek in Atlanta, Ga. Looks like flood-borne trees and other debris that have gotten stuck on bridge

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A picture of a cleared lot with construction equipment in TN
July 1, 2003

A cleared lot with construction equipment in TN

A grated lots with construction equiptment. Houses are in the background. The picture was taken in Tennesse as a part of a Land Cover Trends project field trip.

A picture of a logging trunk in Tennessee
July 1, 2003

A logging truck in Tennessee

A logging truck in Tennessee. The picture was taken as a part of a Land Cover Trends project field trip.

A picture of hay bales in a hay field in TN
July 1, 2003

Hay bales in a hay field in TN

Hay bales in a hay field in Tennessee. This picture was taken as part of a Land Cover Trends project field trip.

Filter Total Items: 399
USGS
December 2, 1998

Elvis and Beale Street are not the only things around Memphis that have been known to rock and roll. The strongest and most widely felt earthquakes in the conterminous United States occurred in 1811-1812 in the Mississippi River Valley.

USGS
October 24, 1998

A century of alterations by humans to the Everglades ecosystem has lowered water levels and changed Everglades plant communities more than what would be expected from natural climatic changes alone over the last 2,000 years, according to scientists at the U.S. Geological Survey. 

USGS
October 2, 1998

Heavy rainfall and flooding prompted an emergency response from USGS (U.S. Geological Survey) engineers and field technicians to keep stream gages operational during and after Hurricane Georges. Personnel from Louisiana, Mississippi, Alabama, and Florida are working to secure gages threatened by rising rivers and streams or damaged by the storm. Some gaging stations monitored by the USGS are used

USGS
September 30, 1998

Hurricane Georges approached Puerto Rico on September 21, 1998 as a Category 3 hurricane. According to the National Weather Service, Hurricane Georges had sustained winds between 110 to 130 mph and gusts that probably exceeded 150 mph in the mountains of central Puerto Rico.

USGS
September 28, 1998

...Initial concerns about severe flooding give way to thoughts of coasts and ecosystems.

USGS
September 24, 1998

The U.S. Geological Survey (USGS) is once again faced with the ominous task of preparing to monitor the effects of a potentially damaging hurricane, Georges, to the southeast coast of the United States

USGS
September 22, 1998

Electricity may be out and communication lines cut off by the tremendous winds and torrential rains of Hurricane Georges, but thanks to good foresight in "hardening" monitoring systems by the U.S. Geological Survey, real-time streamflow data in Puerto Rico continued to flow to reservoir operators, emergency officials, and others who need streamflow information and need it fast.

USGS
September 2, 1998

As the Labor Day weekend approaches, scientists from the U.S. Geological Survey are heading for the beach. They are not packing the usual lounge chairs, cooler, and snorkel masks; their beach gear will include sidescan sonar equipment, a data acquisition system, sampler, and a navigation system. 

USGS
July 21, 1998

During the week of July 13-17, the U.S. Geological Survey (USGS) examined the coral reefs around Culebra, Puerto Rico.

USGS
June 25, 1998

The Asian swamp eel, a non-native fish, has been found in canals, ditches, streams and ponds near Tampa and Miami, Fla. 

USGS
June 18, 1998

Due to heavy rains pelting eastern Massachusetts in recent days, U.S. Geological Survey (USGS) field crews have been leaning precariously over the sides of bridges throughout the region to obtain accurate measurements of the amount (discharge) and height (stage) of water in swollen streams.

USGS
June 5, 1998

A minor earthquake, preliminary magnitude 3.2 according to the U.S. Geological Survey, occurred in North Carolina at 10:31 p.m. Eastern Daylight Time on June 4. The epicenter was about 10 miles (16 km) west-northwest of Kannapolis and about 20 miles (32 km) north of Charlotte.

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