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: 371
Date published: October 26, 2016

Hydrologic Assessment of New Hanover County, NC Aquifers

New Hanover County is one of the most populated areas along the North Carolina coastline and the population is projected to expand by 25 percent over the next 20 years. County managers and town planners are concerned about escalating demand for groundwater within the county and recognize the importance of high-quality drinking water to meet the demands of a growing population.

This...

Date published: October 24, 2016
Status: Completed

Fate and Transport of Pathogens and Nutrients from Land-Applied Animal Manures

This collaborative project between the U.S. Environmental Protection Agency (USEPA) and the USGS was conducted as part of a larger research program being undertaken by USEPA and the U.S Department of Agriculture at several research sites throughout the United States. Goals included:

1. Obtain detailed data concerning the survival of pathogenic microorganisms from manure applied to soil...

Date published: October 24, 2016
Status: Completed

Factors Affecting Nitrogen and Phosphorus Loads in Nutrient-Sensitive Water of Eastern North Carolina

Data collected between 1997 and 2008 at 48 stream sites were used to characterize relations between watershed settings and stream nutrient yields throughout central and eastern North Carolina. The focus of the investigation was to identify environmental variables in watersheds that influence nutrient export for supporting the development and prioritization of management strategies for...

Date published: October 21, 2016

Demographic and Population Models to Assess Recovery and Status of the Endangered Florida Manatee

Population models developed by USGS are the primary decision-support tools used for status assessments, and rely on estimates of adult survival and reproduction rates from mark-recapture studies.

Date published: October 19, 2016

Characterization of subsurface bedrock fractures at GMH Electronics EPA Superfund Site near Roxboro, NC

The US Environmental Protection designated a former electronics manufacturing facility as a Superfund cleanup site near Roxboro, North Carolina. Operations at a former gasoline station/store and electronic component production facility may have resulted in the presence of a volatile-organic compound (VOC) plume in groundwater in the area; referred to as the "GMH Electronics Site".

The...

Date published: October 19, 2016
Status: Active

Modeling, Estimation, and Adaptive Management of Florida Manatees

The Challenge: Florida manatees are threatened by watercraft-related mortality, the potential loss of warmwater habitat, red tide events, and other anthropogenic factors. The USFWS and the Florida Fish and Wildlife Conservation Commission have regulatory authorities under the Endangered Species Act (ESA), the Marine Mammal Protection Act (MMPA), and state statutes to recover manatees. To...

Date published: October 19, 2016

Effects of Land-Applied Biosolids on Water Quality in the Jordan Lake Watershed, North Carolina

Land application of municipal wastewater biosolids is the most common method of biosolids management used in North Carolina and the United States. Biosolids have characteristics that may be beneficial to soil and plants. Land application can take advantage of these beneficial qualities, whereas disposal in landfills or incineration poses no beneficial use of the waste.

However, recent...

Contacts: Chad R Wagner
Date published: October 17, 2016
Status: Active

Brunswick County, NC Groundwater-Level Monitoring

Since 2000, the population of Brunswick County has grown by more than 50%. A growth of this magnitude places significant stress on Brunswick County’s natural resources. County planners have recognized the potential consequences of land use changes associated with growth and the resulting increased demand on water resources by consolidating the many public utility providers into one...

Date published: October 16, 2016

Modeling Past Variation in Florida Manatee Survival, Breeding, and Movements Rates to Establish Baselines for Aquatic Ecosystem and Restoration Research

Long-term monitoring data in the Manatee Individual Photo-identification System (MIPS), developed and coordinated by WARC-Sirenia Project in collaboration with Florida’s Fish and Wildlife Research Institute and Mote Marine Laboratory, are the basis for modeling manatee demography rates.

Date published: October 14, 2016
Status: Active

West Indian Manatee Population Genetics

Nuclear microsatellite markers have been developed and implemented on ~2,000 West Indian manatees. These markers provide individual genetic fingerprints for mark-recapture studies, population structure information for the conservation of unique or isolated populations, and pedigree and relatedness information for addressing inbreeding and breeding structure patterns.

Date published: October 12, 2016
Status: Active

Manatee Health Assessment and Biomedical Studies

A multi-agency effort assesses the health of manatees and provides baseline information on their health, reproductive status, and nutritional condition.

Date published: October 11, 2016
Status: Active

Ft. Gordon, Georgia, Stormwater Assessment

Fort Gordon is a U.S. Department of the Army facility located in east-central Georgia, approximately 10 miles west of Augusta, Georgia). The U.S. Geological Survey (USGS) South Atlantic Water Science Center is working cooperatively with the U.S. Department of the Army Environmental and Natural Resources Management Office of the U.S. Army Signal Center and Fort Gordon to assess the quality of...

Contacts: Doug D Nagle
Filter Total Items: 5,343
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Year Published: 2020

Frequency of extreme freeze events controls the distribution and structure of black mangroves (Avicennia germinans) near their northern range limit in coastal Louisiana

AimClimate change is expected to result in the tropicalization of coastal wetlands in the northern Gulf of Mexico, as warming winters allow tropical mangrove forests to expand their distribution poleward at the expense of temperate salt marshes. Data limitations near mangrove range limits have hindered understanding of the effects of winter...

Osland, Michael; Day, Richard; Michot, Thomas C.

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Year Published: 2020

Near-term spatial hydrologic forecasting in Everglades, USA for landscape planning and ecological forecasting

Operational ecological forecasting is an emerging field that leverages ecological models in a new, cross-disciplinary way – using a real-time or nearly real-time climate forecast to project near-term ecosystem states. These applications give decision-makers lead time to anticipate and manage state changes that degrade ecosystem functions or...

Pearlstine, Leonard G.; Beerens, James M.; Reynolds, Gregg; Haider, Saira; McKelvy, Mark; Suir, Kevin; Romanach, Stephanie; Nestler, Jennifer H.

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Year Published: 2020

Accurate bathymetric maps from underwater digital imagery without ground control

Structure-from-Motion (SfM) photogrammetry can be used with digital underwater photographs to generate high-resolution bathymetry and orthomosaics with millimeter-to-centimeter scale resolution at relatively low cost. Although these products are useful for assessing species diversity and health, they have additional utility for quantifying benthic...

Hatcher, Gerry; Warrick, Jonathan; Ritchie, Andrew C.; Dailey, Evan; Zawada, David G.; Kranenburg, Christine J.; Yates, Kimberly K.

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Year Published: 2020

Small gradients in salinity have large effects on stand water use in freshwater wetland forests

Salinity intrusion is responsible for changes to freshwater wetland watersheds globally, but little is known about how wetland water budgets might be influenced by small increments in salinity. We studied a forested wetland in South Carolina, USA, and installed sap flow probes on 72 trees/shrubs along a salinity gradient. Species investigated...

Duberstein, Jamie A.; Krauss, Ken; Baldwin, M.J.; Allen, Scott T.; Conner, William H.; Salter, John S.; Miloshis, Michael

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Year Published: 2020

Divergent biotic and abiotic filtering of root endosphere and rhizosphere soil fungal communities along ecological gradients

Plant roots assemble two distinct microbial compartments: the rhizosphere (microbes in soil surrounding roots) and the endosphere (microbes within roots). Our knowledge of fungal community assembly in these compartments is limited, especially in wetlands. We tested the hypothesis that biotic factors would have direct effects on rhizosphere and...

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

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Year Published: 2020

Hurricane Sandy effects on coastal marsh elevation change

High-magnitude storm events such as Hurricane Sandy are powerful agents of geomorphic change in coastal marshes, potentially altering their surface elevation trajectories. But how do a storm’s impacts vary across a large region spanning a variety of wetland settings and storm exposures and intensities. We determined the short-term impacts of...

Yeates, Alice G.; Grace, James; Olker, Jennifer H.; Guntenspergen, Glenn R.; Cahoon, Donald; Adamowicz, Susan C.; Anisfeld, Shimon C.; Barrett, Nels; Benzecry, Alice; Blum, Linda K.; Christian, Rober T; Grzyb, Joseph; Kracauer Hartig, Ellen; Hines Leo, Kelly; Lerberg, Scott; Lynch, James C.; Maher, Nicole; Megonigal, J Patrick; Reay, William G.; Siok, Drexel; Starke, Adam; Turner, Vincent; Warren, Scott

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Year Published: 2020

Structural impacts, carbon losses, and regeneration in mangrove wetlands after two hurricanes on St. John, U.S. Virgin Islands

Hurricanes Irma and Maria ravaged the mangroves of St. John, U.S. Virgin Islands, in 2017. Basal area losses were large (63–100%) and storm losses of carbon associated with aboveground biomass amounted to 11.9–43.5 Mg C/ha. Carbon biomass of dead standing trees increased 8.1–18.3 Mg C/ha among sites, and carbon in coarse woody debris on the forest...

Krauss, Ken; From, Andrew; Rogers, Caroline; Whelan, Kevin R.T.; Grimes, Kristen W.; Dobbs, Robert C.; Kelley, Thomas

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Year Published: 2020

Effects of barrier island salt marsh restoration on marsh bird occurrence in the Northern Gulf of Mexico

In the Northern Gulf of Mexico, salt marshes are threatened by sea level rise, erosion, and loss of protective barrier islands. These barrier islands provide critical habitat for wildlife, including globally significant populations of marsh and shorebirds. We investigated salt marsh restoration on two Louisiana barrier islands using presence of 8...

Byerly, Paige A.; Waddle, Hardin; Premeaux, Alexis R.; Leberg, Paul L.

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Year Published: 2020

Proposed species extinction target fails to capture the diversity in biodiversity

We believe the 20 species extinction metric is a retrograde proposal, which does not adequately consider the lessons learnt from the 2020 Aichi Biodiversity Targets. Whilst having a single simple overarching target is appealing, we believe a positively-framed target will garner support, rather than one that aims to, at best, limit negative impacts...

O'Brien, David; Hunter, Margaret; Breed, Martin; Bertola, Laura; Ogden, Rob; Palma da Silva, Clarisse; Paz-Vinas, Ivan; Segelbacher, Gernot; Hoban, Sean M.; Jaffe, Rodolfo

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Year Published: 2020

Characterizing the diverse hydrogeology underlying rivers and estuaries using new floating transient electromagnetic methodology

The hydrogeology below large surface water features such as rivers and estuaries is universally under-informed at the long reach to basin scales (tens of km+). This challenge inhibits the accurate modeling of fresh/saline groundwater interfaces and groundwater/surface water exchange patterns at management-relevant spatial extents. Here we...

Lane, John W.; Briggs, Martin; Maurya, PK; White, Eric A.; Pedersen, JB; Auken, Esben; Terry, Neil; Minsley, Burke J; Kress, Wade; LeBlanc, Denis R.; Adams, Ryan F.; Johnson, Carole D.

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Year Published: 2020

Acris blanchardi (Blanchard's Cricket Frog), Predation

Invertebrates are well-known predators of amphibians with many documented cases of spiders preying upon anurans (reviewed in Toledo 2005. Herpetol. Rev. 36:395–400). Wolf spiders are known to feed on a variety of frogs, including those in the genus Acris (Blackburn et al. 2002. Herpetol. Rev. 33:299). Although typically terrestrial, wolf spiders...

Maldonado, Brittany R.; Glorioso, Brad; Kidder, Raymond P.

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Year Published: 2020

Low-level detection of SFD-causing Ophidiomyces on Burmese Pythons in southwest Florida, with confirmation of the pathogen on co-occurring native snakes

Snake fungal disease (SFD), or ophidiomycosis, is caused by the fungus Ophidiomyces ophiodiicola (Allender et al. 2015; Lorch et al. 2015). SFD is widespread across wild populations in the eastern United States (Lorch et al. 2016) and is known to infect more than 30 species of snake in North America and Europe (Lorch et al. 2016; Franklinos et al...

Glorioso, Brad; Bartoszek, Ian A.; Lorch, Jeffrey M.

Filter Total Items: 497
Sediment-laden water from a tributary flowing into a clearer river
June 19, 2014

Sediment-laden water from a tributary can harm water quality of rivers

Sediment-laden water from a tributary, where development is probably taking place, entering the clearer Chattahoochee River near Atlanta, Georgia. If preventative measures are not taken on construction sites where runoff flows into a nearby stream or creek, results like this can happen. The large amount of suspended sediment can harm water quality of not only the tributary

...
View south/southeast along eastern shoreline in April 2014 shows a dense berm of mangrove trees. 
April 30, 2014

Berm at Jim Foot Key, Florida (2014)

In Photo: View south/southeast along eastern shoreline in April 2014 shows a dense berm of mangrove trees.  The bay is not visible. 

Scientists from the Florence Bascom Geoscience Center first sampled four islands in Florida Bay, Everglades National Park, in April 2014 to collect cores to study sea level rise and storm history in the region.  In September 2017,

...
Field crews on a Florida Bay island
April 14, 2014

Florida Bay island sediments reveal past, may foretell future

Field crew on Bob Allen Key in Florida Bay, Everglades National Park, April 14, 2014, conferring on next steps near core sites marked with orange flags.  The mangroves that form the islands’ perimeter are to the left and in the background. Photo: Anna Wachnicka, FIU [left to right: Lynn Wingard, Marci Marot, Christopher Bernhardt, Terry McCloskey, and James Murray,

...
USGS diver taking a core of a 100-year-old coral in USVI
August 19, 2013

USGS diver taking a core of a 100-year-old coral in USVI

USGS diver taking a core of a 100-year-old coral to allow reconstruction of past ocean temperatures in St. Thomas, U.S. Virgin Islands.

April 14, 2013

Shale Baseline Sampling of Groundwater in North Carolina

Melinda Chapman and Sharon Fitzgerald discuss the U.S. Geological Survey groundwater sampling program to characterize water-suppy well water quality in the area of North Carolina with potential for shale gas production. The sampling program is designed to provide a pre-devolpment baseline that can be compared with well-water quality after shale gas development has occurred

April 14, 2013

Shale Gas Baseline Sampling of Groundwater in NC-- QA/QC

Melinda Chapman and Sharon Fitzgerald discuss the U.S. Geological Survey quality control and quality assurance for the USGS groundwater sampling program to characterize water-suppy well water quality in the area of North Carolina with potential for shale gas production. The sampling program is designed to provide a pre-devolpment baseline that can be compared with well-

Photo of scientists testing where methane goes once released into streams
March 31, 2013

Evaluating the Fate of Methane Released into Streams

Scientists apply a new method for determining the fate of methane discharged into streams. Here, gas is injected into stream water along West Bear Creek, North Carolina. 

Filter Total Items: 399
USGS science for a changing world logo
August 31, 2009

The American Fisheries Society (AFS) is holding its 139th Annual Meeting in Nashville, Tenn., from Aug. 30-Sept. 3. This year's meeting theme is "Diversity – the Foundation of Fisheries and of AFS: Are We Gaining Ground?" Below are highlights from U.S. Geological Survey research presentations at the conference.

USGS science for a changing world logo
June 16, 2009

Spring nutrient delivery to the northern Gulf of Mexico is among the highest measured by the U.S. Geological Survey (USGS) in thirty years. Too many nutrients, which are essential for plant growth, are not necessarily a good thing.

USGS science for a changing world logo
June 12, 2009

Pesticide-related compounds and elevated levels of nitrate have been found in lakes in central Florida's Lake Wales Ridge region. The compounds found include currently used pesticides, according to the recently published U.S. Geological Survey (USGS) report.

USGS science for a changing world logo
April 15, 2009

Record-breaking floodwaters are working their way down Florida's Suwannee River from the Withlacoochee and Alapaha rivers. Crews from the U.S. Geological Survey (USGS) are in the field measuring the height and volume of water that is rushing downstream.

USGS science for a changing world logo
April 7, 2009

While the Florida panhandle is under flooding, water levels in the streams and wells of southwest Florida are approaching record low levels for this time of year, putting parts of the state at risk of extreme hydrologic drought in the next few months. 

USGS science for a changing world logo
March 4, 2009

Florida Site Established for Tracking Seasonal Effects of Climate Change on Native Species
For the first time, a site in Florida has been established where citizens, students and researchers can track the seasonal effects of climate change on Florida's native plants and animals.

USGS science for a changing world logo
March 4, 2009

Florida Site Established for Tracking Seasonal Effects of Climate Change on Native Species
For the first time, a site in Florida has been established where citizens, students and researchers can track the seasonal effects of climate change on Florida's native plants and animals.

USGS
December 18, 2008

U.S. Geological Survey Deputy Director Robert Doyle has been selected as a Distinguished recipient of the Presidential Rank Award, a prestigious award that commends outstanding leadership and long-term accomplishments.

USGS
October 15, 2008

Education activity for local students to learn from water experts about the water resources in the Triangle area. Activities will include hands-on experiments.  Students will see, touch, and try on specialized gear used during water testing; and play interactive games to build and test their water knowledge.

USGS
October 9, 2008

Education activity for local students to learn from water experts about the water resources in the Triangle area. Activities will include hands-on experiments.  Students will see, touch, and try on specialized gear used during water testing; and play interactive games to build and test their water knowledge

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