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: April 17, 2016
Status: Completed

Socio-Ecological Conservation Targets for the Peninsular Florida Landscape Conservation Cooperative

Peninsular Florida has a high density of species and ecosystems of conservation concern, as well as many threats to the persistence of native species and their habitats. USGS worked closely with the Peninsular Florida Landscape Conservation Cooperative to define conservation targets to help meet conservation goals. 

Date published: April 17, 2016

Peninsular Florida Landscape Conservation Cooperative (PFLCC) Climate Scenarios and Species Vulnerability Assessment

Peninsular Florida is one of the most vulnerable regions to climate change in the United States. With complex socioeconomic and ecology dynamics and a large number of governing agencies involved in conservation planning, USGS worked to created an appropriate framework for landscape conservation cooperative-scale decision-making across current conservation planning agencies and jurisdictions...

Date published: April 17, 2016
Status: Active

Winter Manatee Foraging Behavior and the Decline of Seagrass Beds in the Northern Indian River Lagoon

With high numbers of manatees using the Florida Power and Light power plant warm water refuge during winter, their impact on the seagrass beds in the Indian River Lagoon is considered an important indicator of the long-term capacity of the area to support the manatees. USGS is working with partners to investigate the spatial extent and intensity of manatee use of seagrass beds in the area. ...

Date published: April 17, 2016
Status: Active

Coral Bleaching and Disease: Effects on Threatened Corals and Reefs

Severe coral bleaching in 2005, followed by a disease outbreak, resulted in severe reef degradation in the US Virgin Islands; the amount of living coral cover at long-term monitoring sites decreased an average of 60%. With climate change, high seawater temperatures are expected to lead to more frequent bleaching episodes and possibly more disease outbreaks. 

Date published: April 17, 2016
Status: Active

Mangrove Migration Network

At the poleward marsh-mangrove ecotone, mangrove abundance and coverage is winter temperature-sensitive in that it oscillates in response to the frequency, duration, and/or intensity of extreme winter temperatures. Future winter climate change is expected to facilitate poleward mangrove range expansion at the expense of salt marshes in Texas, Louisiana, and parts of Florida. 

Date published: April 17, 2016
Status: Active

Watershed Controls of Freshwater Wetland Nutrient Stoichiometry and Sensitivity to Eutrophication

When it comes to freshwater wetlands, hydrology plays a large role in nutrient stoichiometry and sensitivity to nutrient inputs. Although wetland biogeochemists intuitively understand these important relationships between landscape position, hydrology, and sensitivity to nutrient inputs, these relationships have never been quantified using geospatial data. The objective of this project will be...

Date published: April 17, 2016
Status: Active

Incorporating Future Change into Current Conservation Planning: Evaluating Wetland Migration along the Gulf of Mexico under Alternative Sea-Level Rise and Urbanization Scenarios

More than half of contiguous U.S. coastal wetlands are located along the Gulf of Mexico coast. These highly-productive wetlands support many ecosystem goods and services and fish and wildlife habitat. Historically, coastal wetlands have adapted to sea-level changes via lateral and vertical movement on the landscape. As sea levels rise in the future, coastal wetlands will adapt and migrate...

Date published: April 17, 2016
Status: Active

Macroclimatic Controls of Coastal Wetland Ecosystem Structure and Function

At the global-scale, macroclimatic drivers govern ecosystem structure and function in tidal saline wetlands (e.g., salt marshes, mangrove forests, salt flats). However, global reviews and models for these ecosystems typically do not directly include climatic drivers. The objective of this research is to examine and forecast the effects of macroclimatic drivers on wetland ecosystem structure...

Date published: April 17, 2016
Status: Active

Life History Characterization and Host Fish Identification for Federally Listed and Imperiled Freshwater Mussel Species in the Suwannee River Basin in Georgia and Florida

Freshwater mussels are considered the most imperiled group of animals in the United States. These animals provide valuable ecological services by filtering water, sequestering nutrients, and providing forage for migratory birds, small mammals, and turtles. They also have a unique and complex life cycle that makes them especially vulnerable to human disturbances. It includes a parasitic larval...

Date published: April 17, 2016
Status: Active

Evaluation of Stream Reaches for Mussel Reintroduction in the Upper Coosa Watershed, NW Georgia

The Conasauga River in northwest Georgia and southeast Tennessee harbors the majority of mussel diversity still found in the Georgia portion of the Upper Coosa Basin. While the Conasauga historically supported at least 44 mussel species, only about 20 species remain. 

Date published: April 17, 2016
Status: Active

Geographical Trends in Ecosystem Function and Biodiversity of Wetlands as a Surrogate for Climate Change

Extreme drought and temperature in the southeastern United States may become more frequent in the future, and any  extreme shifts in climate condition are likely to have effects on wetland ecosystem function. USGS research predicts the effects of climate change by shifts in function and biodiversity across existing  climate gradients in baldcypress swamps. 

Date published: April 17, 2016
Status: Active

Alabama Barrier Island Restoration Assessment at Dauphin Island

Dauphin Island, Alabama, is the only barrier island providing protection to much of Alabama's coastal natural resources. Severely impacted by repeated extreme events, like Hurricane Katrina and Deepwater Horizon oil spill, USGS and partners are conducting a joint study to evaluate the feasibility of certain alternatives to increase resiliency and sustainability of the island. 

Filter Total Items: 5,251
Publication Thumbnail
Year Published: 2020

Plant community establishment in a coastal marsh restored using sediment additions

A goal of wetland restoration is the establishment of resilient plant communities that persist under a variety of environmental conditions. We investigated the role of intraspecific and interspecific variation on plant community establishment in a brackish marsh that had been restored by sediment addition. Plant growth, sediment accretion, and...

Howard, Rebecca; Rafferty, Patricia S.; Johnson, Darren J.

Publication Thumbnail
Year Published: 2020

Assessment of uncertainty in multi-model means of downscaled south Florida precipitation for projected (2019-2099) climate

South Florida resource management, particularly the Everglades restoration effort, is beginning to consider projections of precipitation from multiple climate models for decision-making. Because precipitation changes can significantly affect the Everglades ecosystem, characterization of precipitation projection uncertainty is important for...

Infanti, Johnna; Kirtman, Ben P.; Aumen, Nicholas; Stamm, John F.; Polsky, Colin

Publication Thumbnail
Year Published: 2020

Late Quaternary evolution and stratigraphic framework influence on coastal systems along the north-central Gulf of Mexico, USA

Coastal systems in the Gulf of Mexico are threatened by reduced sediment supply, storm impacts and relative sea-level rise (RSLR). The geologic record provides insight into geomorphic evolution thresholds to these forcing mechanisms to help predict future barrier evolution in response to climate change. This study synthesizes ∼2100 km of...

Hollis, Robert S; Wallace, Davin J; Miner, Michael D; Gal, Nina S; Dike, Clayton H; Flocks, James G.

Publication Thumbnail
Year Published: 2020

Changes in event‐based streamflow magnitude and timing after suburban development with infiltration‐based stormwater management

Green stormwater infrastructure implementation in urban watersheds has outpaced our understanding of practice effectiveness on streamflow response to precipitation events. Long‐term monitoring of experimental urban watersheds in Clarksburg, Maryland, USA, provided an opportunity to examine changes in event‐based streamflow metrics in two treatment...

Hopkins, Kristina G.; Bhaskar, Aditi S.; Woznicki, Sean; Fanelli, Rosemary

Publication Thumbnail
Year Published: 2020

Predicting functional responses in agro-ecosystems from animal movement data to improve management of invasive pests

Functional responses describe how changing resource availability affects consumer resource use, thus providing a mechanistic approach to prediction of the invasibility and potential damage of invasive alien species (IAS). However, functional responses can be context dependent, varying with resource characteristics and availability, consumer...

Wilber, Mark Q.; Chinn, Sarah M.; Beasley, James C.; Boughton, Raoul; Brook, Ryan K.; Ditchkoff, Stephen S.; Fischer, Justin W.; Hartley, Stephen B.; Holmstrom, Lindsey K.; Kilgo, John C.; Lewis, Jesse S.; Miller, Ryan S.; Snow, Nathan P.; Vercauteren, Kurt C.; Wisely, Samantha M.; Webb, Colleen T.; Pepin, Kim M.

Publication Thumbnail
Year Published: 2020

The long-term effects of Hurricanes Wilma and Irma on soil elevation change in Everglades mangrove forests

Mangrove forests in the Florida Everglades (USA) are frequently affected by hurricanes that produce high-velocity winds, storm surge, and extreme rainfall, but also provide sediment subsidies that help mangroves adjust to sea-level rise. The long-term influence of hurricane sediment inputs on soil elevation dynamics in mangrove forests are not...

Feher, Laura; Osland, Michael; Anderson, Gordon; Vervaeke, William; Krauss, Ken; Whelan, Kevin R. T.; Balentine, Karen M.; Tiling-Range, Ginger; Smith, Thomas J.; Cahoon, Donald

Publication Thumbnail
Year Published: 2020

An integrative GIS approach to analyzing the impacts of septic systems on the coast of Florida, USA

An estimated 2.7 million septic systems in Florida, USA are potential ground and surface water contaminant sources that may affect environmental and human health. This study examined the spatial distribution of septic systems, coastal surface water contamination, and related environmental factors of coastal Florida watersheds at the 8-digit...

Flanagan, Kyle; Dixon, Barnali; Rivenbark, Tess; Griffin, Dale W.

Publication Thumbnail
Year Published: 2020

Quantifying hydrologic controls on local- and landscape-scale indicators of coastal wetland loss

Background and AimsCoastal wetlands have evolved to withstand stressful abiotic conditions through the maintenance of hydrologic feedbacks among vegetation production and flooding. However, disruption of these feedbacks can lead to ecosystem collapse, or a regime shift from vegetated wetland to open water. To prevent the loss of critical coastal...

Stagg, Camille; Osland, Michael; Moon, Jena A.; Hall, Courtney; Feher, Laura; Jones, William R.; Couvillion, Brady; Hartley, Stephen B.; Vervaeke, William

Publication Thumbnail
Year Published: 2020

Winter climate change and the poleward range expansion of a tropical invasive tree (Brazilian pepper ‐ Shinus terebinthifolius)

Winter climate change is expected to lead to the tropicalization of temperate ecosystems, where tropical species expand poleward in response to a decrease in the intensity and duration of winter temperature extremes (i.e., freeze events). In the southeastern United States, freezing temperatures control the northern range limits of many invasive...

Osland, Michael; Feher, Laura

Publication Thumbnail
Year Published: 2020

Effects of climate-related variability in storage on streamwater solute concentrations and fluxes in a small forested watershed in the Southeastern United States

Streamwater quality can be affected by climate-related variability in hydrologic state, which controls flow paths and affects biogeochemical processes. Thirty-one years of input/output solute fluxes at Panola Mountain Research Watershed, a small, forested, seasonally water-limited watershed near Atlanta, Georgia, were used to quantify the effects...

Aulenbach, Brent T.

Publication Thumbnail
Year Published: 2020

Using carbon isotope ratios to verify predictions of a model simulating the interaction between coastal plant communities and their effect on ground water salinity

As sea level rises in low-lying coastal islands, salt-tolerant (halophytic) coastal vegetation communities may be able to migrate inland, replacing the freshwater vegetation that is unable to tolerate salt stress. The pace of such shifts may be accelerated by a self-reinforcing feedback between the halophytic vegetation and salinity, as well as by...

Subedi, Suresh C.; Sternberg, Leonel; DeAngelis, Donald L.; Ross, Michael S.; Ogarcak, Danielle

Publication Thumbnail
Year Published: 2020

Considerations for maximizing the adaptive potential of restored coral populations in the western Atlantic

Active coral restoration typically involves two interventions: crossing gametes to facilitate sexual larval propagation; and fragmenting, growing, and outplanting adult colonies to enhance asexual propagation. From an evolutionary perspective, the goal of these efforts is to establish self‐sustaining, sexually reproducing coral populations that...

Baums, Iliana B.; Baker, Andrew C; Davies, Sarah W; Grottoli, Andrea G; Kenkel, Carly D; Kitchen, Sheila A; Kuffner, Ilsa B.; LaJeunesse, Todd C; Matz, Mikhail V; Miller, Margaret W; Parkinson, John E; Shantz, Andrew A

Filter Total Items: 500
Photo of bleaching colony of lobed star coral, Montastraea annularis
August 17, 2010

Bleaching colony of lobed star coral, Montastraea annularis

Bleaching colony of lobed star coral, Montastraea annularis, Florida Keys. When corals are stressed, the symbiosis between the coral animal and its photosynthetic algal symbionts (zooxanthellae) breaks down and the zooxanthellae are expelled from the coral tissue. The zooxanthellae’s photosynthetic pigments contribute much of the color we see in corals, so when

...
Photo of bleaching colony of great star coral, Montastraea cavernosa
August 17, 2010

Bleaching colony of great star coral, Montastraea cavernosa

Bleaching colony of great star coral, Montastraea cavernosa, Florida Keys. When corals are stressed, the symbiosis between the coral animal and its photosynthetic algal symbionts (zooxanthellae) breaks down and the zooxanthellae are expelled from the coral tissue. The zooxanthellae’s photosynthetic pigments contribute much of the color we see in corals, so when

...
Photo of bleaching colony of great star coral, Montastraea cavernosa, with polyps extended, Florida Keys.
August 17, 2010

Bleaching colony of great star coral, Montastraea cavernosa

Bleaching colony of great star coral, Montastraea cavernosa, with polyps extended, Florida Keys. When corals are stressed, the symbiosis between the coral animal and its photosynthetic algal symbionts (zooxanthellae) breaks down and the zooxanthellae are expelled from the coral tissue. The zooxanthellae’s photosynthetic pigments contribute much of the color we see

...
bleaching colony of star coral
August 17, 2010

Bleaching colonies of mountainous star coral, Montastraea faveolata

Bleaching colonies of mountainous star coral, Montastraea faveolata, Florida Keys. When corals are stressed, the symbiosis between the coral animal and its photosynthetic algal symbionts (zooxanthellae) breaks down and the zooxanthellae are expelled from the coral tissue. The zooxanthellae’s photosynthetic pigments contribute much of the color we see in corals, so

...
Photo of bleaching colonies of mustard hill coral, Porites astreoides, Florida Keys.
August 17, 2010

Bleaching colonies of mustard hill coral, Porites astreoides

Bleaching colonies of mustard hill coral, Porites astreoides, both green and brown color morphs, Florida Keys. When corals are stressed, the symbiosis between the coral animal and its photosynthetic algal symbionts (zooxanthellae) breaks down and the zooxanthellae are expelled from the coral tissue. The zooxanthellae’s photosynthetic pigments contribute much of

...
Photo of bleaching colony of mustard hill coral, Porites astreoides, Florida Keys.
August 17, 2010

Bleaching colony of mustard hill coral, Porites astreoides

Bleaching colony of mustard hill coral, Porites astreoides, Florida Keys. When corals are stressed, the symbiosis between the coral animal and its photosynthetic algal symbionts (zooxanthellae) breaks down and the zooxanthellae are expelled from the coral tissue. The zooxanthellae’s photosynthetic pigments contribute much of the color we see in corals, so when the

...
Photo of bleaching colony of massive starlet coral, Siderastrea siderea, Florida Keys.
August 17, 2010

Bleaching colony of massive starlet coral, Siderastrea siderea

Bleaching colony of massive starlet coral, Siderastrea siderea, Florida Keys. When corals are stressed, the symbiosis between the coral animal and its photosynthetic algal symbionts (zooxanthellae) breaks down and the zooxanthellae are expelled from the coral tissue. The zooxanthellae’s photosynthetic pigments contribute much of the color we see in corals, so when

...
Photo of bleaching colony of massive starlet coral, Siderastrea siderea, Florida Keys.
August 17, 2010

Bleaching colony of massive starlet coral, Siderastrea siderea

Bleaching colony of massive starlet coral, Siderastrea siderea, Florida Keys. When corals are stressed, the symbiosis between the coral animal and its photosynthetic algal symbionts (zooxanthellae) breaks down and the zooxanthellae are expelled from the coral tissue. The zooxanthellae’s photosynthetic pigments contribute much of the color we see in corals, so when

...
Photo of bleaching colony of blushing star coral, Stephanocoenia intersepta/michelinii.
August 17, 2010

Bleaching colony of blushing star coral, Stephanocoenia intersepta

Bleaching colony of blushing star coral, Stephanocoenia intersepta/michelinii. When corals are stressed, the symbiosis between the coral animal and its photosynthetic algal symbionts (zooxanthellae) breaks down and the zooxanthellae are expelled from the coral tissue. The zooxanthellae’s photosynthetic pigments contribute much of the color we see in corals, so

...
colony of symmetrical brain coral, Diploria strigosa, affected by black-band disease
August 12, 2010

Brain coral with black-band disease

A colony of symmetrical brain coral, Diploria strigosa, affected by black-band disease (BBD), Florida Keys.

Star coral, Montastraea faveolata, affected by black-band disease
August 8, 2010

Star coral, Montastraea faveolata, affected by black-band disease

A colony of mountainous star coral, Montastraea faveolata, affected by black-band disease (BBD), Florida Keys.

Filter Total Items: 393
USGS science for a changing world logo
July 9, 2005

With the approach of Hurricane Dennis, scientists from the U.S. Geological Survey (USGS) are looking at the section of beach most likely to take the brunt of the storm’s fury. 

USGS
June 3, 2005

The American Ground Water Trust’s program "Ground Water Institute for Teachers TM", educates teachers about ground water and hydrology.

USGS science for a changing world logo
December 23, 2004

A team of scientists has determined that a coral reef discovered in 1999 is the deepest reef ever found off the continental U.S., the U.S. Geological Survey (USGS) announced today. The reef lies in approximately 250 feet of water off the coast of southwest Florida on a submerged barrier-island named Pulley Ridge.

USGS
December 23, 2004

A team of scientists has determined that a coral reef discovered in 1999 is the deepest reef ever found off the continental U.S., the U.S. Geological Survey (USGS) announced today.

USGS science for a changing world logo
December 6, 2004

USGS Director Chip Groat is available for interviews on Dec. 6-7. Please call the contact, above. Groat will present Science for Ecosystem Restoration on Mon, Dec. 6 from 2:20-2:50pm.

USGS
December 6, 2004

Hydrologists, biologists, geologists and geographers from the U. S. Geological Survey (USGS) will discuss their science at the First National Conference on Ecosystem Restoration (NCER) Dec. 6-10 at the Wyndham Palace in Orlando, Fla.

USGS science for a changing world logo
September 18, 2004

Scientists from the U.S. Geological Survey have surveyed the barrier islands battered by Hurricane Ivan and have prepared unique pre- and post-storm photo pairs showing extreme coastal change. The photos will be posted by 5:00 pm today.

USGS
September 18, 2004

Scientists from the U.S. Geological Survey have surveyed the barrier islands battered by Hurricane Ivan and have prepared unique pre- and post-storm photo pairs showing extreme coastal change. The photos will be posted by 5:00 pm today.

USGS science for a changing world logo
September 16, 2004

The U.S. Geological Survey alerted state and federal agencies today to the increased potential for landslides in the mountainous regions of Georgia, Alabama, Tennessee, Kentucky, Pennsylvania, South Carolina, North Carolina, Virginia, West Virginia, Ohio and Maryland due to anticipated heavy rainfall from Hurricane Ivan.

USGS science for a changing world logo
September 16, 2004

Scientists at the U.S. Geological Survey (USGS) are closely watching the Gulf of Mexico shoreline to understand the impact of Hurricane Ivan. The shoreline in the Gulf is particularly vulnerable to storm surge and coastal change during hurricanes because of the low elevation, shoreline retreat and subsidence in the Mississippi Delta regions.

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