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: 5,355
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Year Published: 2019

Phosphorus runoff risk assessment in karstic regions of the U.S.

The Phosphorus (P) Index risk assessment tool has been widely adopted across the U.S. to identify and rank site vulnerability to P runoff as part of the Natural Resources Conservation Service (NRCS) nutrient management planning (NMP) process. However, limited success has been achieved in addressing the risk of P loss by subsurface flow pathways,...

Sharpley, Andrew N.; Hays, Phillip D.; Daniels, Michael B.; VanDevender, Karl W.

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Year Published: 2019

Exposure and potential effects of pesticides and pharmaceuticals in protected streams of the US National Park Service southeast Region

Globally protected areas offer refugia for a broad range of taxa including threatened and endangered species. The United States National Park Service (NPS) manages public lands to preserve biodiversity, but increasing park visitation and development of surrounding landscapes increase exposure to and effects from bioactive contaminants. The risk (...

Bradley, Paul; Romanok, Kristin; Duncan, Jeffrey R.; Battaglin, William; Clark, Jimmy; Hladik, Michelle; Huffman, Bradley; Iwanowicz, Luke; Journey, Celeste A.; Smalling, Kelly

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Year Published: 2019

Response of tidal marsh vegetation to pulsed increases in flooding and nitrogen

Worldwide, human activities have modified hydrology and nutrient loading regimes in coastal wetlands. Understanding the interplay between these drivers and subsequent response of wetland plant communities is essential to informing wetland management and restoration efforts. Recent restoration strategies in Louisiana proposes to use sediment...

McCoy, Meagan M; Sloey, Taylor M; Howard, Rebecca J.; Hester, Mark W.

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Year Published: 2019

A pragmatic approach for comparing species distribution models to increasing confidence in managing piping plover habitat

Conservation management often requires decision-making without perfect knowledge of the at-risk species or ecosystem. Species distribution models (SDMs) are useful but largely under-utilized due to model uncertainty. We provide a case study that utilizes an ensemble modeling approach of two independently derived SDMs to explicitly address common...

Maslo, Brooke; Zeigler, Sara; Drake, Evan; Pover, Todd; Plant, Nathaniel G.

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Year Published: 2019

Morphodynamic modelling of the wilderness breach, Fire Island, New York. Part I: Model set-up and validation

On October 29, 2012, storm surge and large waves produced by Hurricane 13 Sandy resulted in the formation of a breach in eastern Fire Island, NY. The goals of this study 14 are to gain a better understanding of the physical processes that govern breach behavior and 15 to assess whether process-based models can be used to forecast the evolution of...

van Ormondt, Maarten; Nelson, Timothy; Hapke, Cheryl; Roelvink, Dano

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Year Published: 2019

A comparison of hydrocarbon-related landscape disturbance patterns along the New York-Pennsylvania border, 2004–2013

Executive SummaryThe New York-Pennsylvania area has a long history of hydrocarbon extraction, and the addition of shale gas extraction methods contributes to landscape disturbance borne by previously developed oil and non-shale gas resources. The main unconventional extraction method used to extract shale gas from the Marcellus Shale located in...

Roig-Silva, Coral M.; Milheim, Lesley E.; Slonecker, E. Terrence; Kalaly, Siddiq; Chestnut, Joseph
Roig-Silva, C.M., Milheim, L.E., Slonecker, E.T., Kalaly, S., and Chestnut, J., 2019, A comparison of hydrocarbon-related landscape disturbance patterns along the New York-Pennsylvania border, 2004–2013: U.S. Geological Survey Scientific Investigations Report 2019–5096, 23 p., https://doi.org/10.3133/sir20195096.

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Year Published: 2019

Flood-frequency comparison from 1995 to 2016 and trends in peak streamflow in Arkansas, water years 1930–2016

In 2016, the U.S. Geological Survey, in cooperation with the U.S. Army Corps of Engineers and the Federal Emergency Management Agency, began a study in Arkansas to investigate possible increasing trends in annual peak streamflow data and the possible resulting increase in the annual exceedance probability flood (AEPF) predictions. Temporal trends...

Ensminger, Paul A.; Breaker, Brian K.
Ensminger, P.A., and Breaker, B.K., 2019, Flood-frequency comparison from 1995 to 2016 and trends in peak streamflow in Arkansas, water years 1930–2016: U.S. Geological Survey Scientific Investigations Report 2019–5131, 20 p., https://doi.org/10.3133/sir20195131.

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Year Published: 2019

Comparing live-capture methods for nutria: single- versus multiple-capture cage traps

Herbivory and burrowing by nutria (Myocastor coypus) cause substantial ecological and economic damage. Trapping is a common, effective practice for reducing nutria damage; however, trapping approaches must continually be adapted to keep pace with evolving animal welfare and ethical issues and to more effectively target pest species of interest....

Sheffels, Trevor R.; Carter, Jacoby; Sytsma, Mark S.; Taylor, Jimmy D.

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Year Published: 2019

Asian swamp eels in North America linked to the live-food trade and prayer-release rituals

We provide a history of swamp eel (family Synbranchidae) introductions around the globe and report the first confirmed nonindigenous records of Amphipnous cuchia in the wild. The species, native to Asia, is documented from five sites in the USA: the Passaic River, New Jersey (2007), Lake Needwood, Maryland (2014), a stream in Pennsylvania (2015),...

Nico, Leo; Kilian, Jay V.; Ropicki, Andrew J.; Harper, Matthew

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Year Published: 2019

Using δ13C and δ18O to analyze loblolly pine (Pinus taeda L.) response to experimental drought and fertilization

Drought frequency and intensity are projected to increase throughout the southeastern USA, the natural range of loblolly pine (Pinus taeda L.), and are expected to have major ecological and economic implications. We analyzed the carbon and oxygen isotopic compositions in tree ring cellulose of loblolly pine in a factorial drought (~30% throughfall...

Lin, Wen; Domec, Jean-Christophe; Ward, Eric; Marshall, John D.; King, John S; Laviner, Marshall A.; Fox, Thomas R; West, Jason B.; Sun, Ge; McNulty, Steve G; Noormets, Asko

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Year Published: 2019

Potentiometric surface of groundwater-level altitudes near the planned Highway 270 bypass, east of Hot Springs, Arkansas, July–August 2017

The Ouachita Mountains aquifer system potentiometric-surface map is one component of the Hot Springs Bypass Groundwater Monitoring Project. The potentiometric-surface map provides a baseline assessment of shallow groundwater levels and flow directions before the construction of the Arkansas Department of Transportation planned extension of the...

Nottmeier, Anna M.; Hays, Phillip D.
Nottmeier, A.M., and Hays, P.D., 2019, Potentiometric surface of groundwater-level altitudes near the planned Highway 270 bypass, east of Hot Springs, Arkansas, July–August 2017: U.S. Geological Survey Scientific Investigations Map 3444, 13 p., 1 sheet, https://doi.org/10.3133/sim3444.

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Year Published: 2019

The importance of natural versus human factors for ecological conditions of streams and rivers

Streams are influenced by watershed-scale factors, such as climate, geology, topography, hydrology, and soils, which mostly vary naturally among sites, as well as human factors, agriculture and urban development. Thus, natural factors could complicate assessment of human disturbance. In the present study, we use structural equation modeling and...

Tang, Tao; Stevenson, R. Jan; Grace, James

Filter Total Items: 497
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

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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.

Tadpole with SPI
December 19, 2002

Tadpole with SPI

This tadpole shows signs of a severe Perkinsea infection. 

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.

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