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: May 6, 2016
Status: Active

Joint Ecosystem Modeling: Greater Everglades Modeling Decision Support Tools

The Joint Ecosystem Modeling team is developing and applying ecological models and other decision support tools for Greater Everglades restoration project planning.

Date published: May 6, 2016
Status: Active

Optimal Control Strategies for Invasive Exotics in South Florida

The establishment and proliferation of exotic plants and animals can interfere with native ecological processes and can cause severe stress to sensitive ecosystems.

Date published: May 2, 2016
Status: Active

The Oysters of Chicopit: Status of the Oyster Population in Chicopit Bay before, during, and after the Construction of the Mile Point Project

Chicopit Bay, part of the Timucuan Ecological and Historic Preserve in Florida, is a small embayment at the intersection of San Pablo Creek (part of the Intercoastal Waterway) and the St. Johns River. Home to a number of small oyster beds, this area is now being dredged to help eliminate cross currents from the main shipping channel of the St. Johns. WARC researchers collect baseline...

Contacts: Michael Randall
Date published: May 2, 2016
Status: Active

Lionfish Distribution, Geographic Spread, Biology, and Ecology

Many aspects of lionfish biology are studied at the USGS Wetland and Aquatic Research Center.  As part of the U.S. Geological Survey Nonindigenous Aquatic Species database, the distribution of lionfish is tracked over time.

Date published: May 2, 2016
Status: Active

Impacts of Non-Native Fishes in the Florida Everglades

The Florida Everglades is the largest wetland ecosystem in the United States and supports a diverse flora and fauna, including many rare species.

Date published: April 25, 2016
Status: Active

Gulf of Mexico Land Loss Change Assessment: A Cooperative Study with the Bureau of Ocean and Energy Management

Eighty-five percent of the coastal wetland loss in the contiguous United States occurs in the Gulf of Mexico. Documenting and understanding the occurrence of this wetland loss will provide for effective planning, mitigation, and restoration activities.

Date published: April 25, 2016
Status: Active

Advanced Technological Solutions in Support of Greater Everglades Priority Ecosystem Science: Joint Ecosystem Modeling (JEM)

The JEM Biological Database offers secure data storage in relational databases, as well as web applications to manage, search, analyze, and report on captured data.

Contacts: Mark McKelvy
Date published: April 25, 2016

Collaborative Development of Ecological Forecasting Model and Data Manipulation Software: Everglades National Park, South Florida Natural Resources Center (SFNRC)

The goal of the Advanced Applications Team’s partnership with SFNRC is to facilitate the use of scientific research findings in restoration and land management decisions.

Contacts: Kevin Suir
Date published: April 18, 2016
Status: Active

Long-term Trends in Swamp Tree Growth across Drought and Salinity Gradients along the Northern Gulf Coast

This study will examine the potential effects of climate-change-induced sea level rise, drought and water extraction by examining tree growth patterns across the Gulf Coast, specifically targeting long-term research plots available in the North American Baldcypress Swamp Network (NABCSN) and the Suwannee River.

Date published: April 18, 2016
Status: Completed

Baseline Aquatic Contamination and Endocrine Status in Resident Fish Populations of Biscayne National Park and in the Adjacent Coastal Environment

As part of the Comprehensive Everglades Restoration Plan, water managers are planning to use treated wastewater from the South District Wastewater Treatment Plant (WWTP) to supplement the canal waters that will be used to rehydrate wetlands adjacent to the Biscayne National Park (Park).

Date published: April 17, 2016
Status: Active

Population Demography and Food Web Analysis of Large Aquatic Salamanders (Siren and Amphiuma) in North Florida

Understanding amphibian's life-histories can help predict how they may persist in aquatic habitats in the face of droughts and other climate change-associated events. 

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Year Published: 2020

Assessing the water quality impacts of two Category-5 hurricanes on St. Thomas, Virgin Islands

Managing waterborne and water-related diseases is one of the most critical factors in the aftermath of hurricane-induced natural disasters. The goal of the study was to identify water-quality impairments in order to set the priorities for post-hurricane relief and to guide future decisions on disaster preparation and relief administration. Field...

Jiang, Sunny; Han, Muyue; Chandrasekaran, Srikiran; Fang, Yingcong; Kellogg, Christina A.

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Year Published: 2020

Colony-forming unit spreadplate assay versus liquid culture enrichment-polymerase chain reaction assay for the detection of Bacillus Endospores in soils

A liquid culture enrichment-polymerase chain reaction (E-PCR) assay was investigated as a potential tool to overcome inhibition by chemical component, debris, and background biological impurities in soil that were affecting detection assay performance for soil samples containing Bacillus atrophaeus subsp. globigii (a surrogate for B. anthracis)....

Griffin, Dale W.; Lisle, John T.; Feldhake, David; Silvestri, Erin E.

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Year Published: 2020

Simulation of post-hurricane impact on invasive species with biological control management

Understanding the effects of hurricanes and other large storms on ecological communities and the post-event recovery in these communities can guide management and ecosystem restoration. This is particularly important for communities impacted by invasive species, as the hurricane may affect control efforts. Here we consider the effect of a...

Xu, Linhao; Zdechlik, Marya Claire; Smith, Melissa C.; Rayamajhi, Min B.; DeAngelis, Don; Zhang, Bo

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Year Published: 2020

Traveling to thermal refuges during stressful temperatures leads to foraging constraints in a central-place forager

Central-place foragers can be constrained by the distance between habitats. When an organism relies on a central place for thermal refuge, the distance to food resources can potentially constrain foraging behavior. We investigated the effect of distance between thermal refuges and forage patches of the cold-intolerant marine mammal, the Florida...

Haase, Catherine G.; Fletcher, Robert J.; Slone, Daniel H.; Reid, James P.; Butler, Susan M.

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Year Published: 2020

A comparison of the Trojan Y Chromosome strategy to harvesting models for eradication of nonnative species

The Trojan Y Chromosome strategy (TYC) is a promising eradication method for biological control of nonnative species. The strategy works by manipulating the sex ratio of a population through the introduction of supermales that guarantee male offspring. In the current study, we compare the TYC method with a pure harvesting strategy. We...

Lyu, Jingjing; Schofield, Pamela J.; Reaver, Kristen; Beauregard, Matthew; Parshad, Rana D.

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Year Published: 2020

An overview of bioaerosol load and health impacts associated with dust storms: A focus on the Middle East

Dust storms are an important environmental problem worldwide. The main sources of dust storms include the Sahara, the Middle East, and central and northeastern Asia. Dust storms originating from these regions can be dispersed across oceans and in some cases globally. They occur throughout the year and vary in frequency and intensity. The...

Soleimani, Zahra; Teymouri, Pari; Darvishi Boloorani, Ali; Mesdaghinia, Alireza; Middleton, Nick; Griffin, Dale W.

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Year Published: 2020

Dispersal asymmetry in a two-patch system with source–sink populations

This paper analyzes source–sink systems with asymmetric dispersal between two patches. Complete analysis on the models demonstrates a mechanism by which the dispersal asymmetry can lead to either an increased total size of the species population in two patches, a decreased total size with persistence in the patches, or even extinction in both...

Wu, Hong; Wang, Yuanshi; Li, Yufeng; DeAngelis, Donald L.

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Year Published: 2020

Using integrated population models for insights into monitoring programs: An application using pink-footed geese

Development of integrated population models (IPMs) assume the absence of systematic bias in monitoring programs, yet many potential sources of systematic bias in monitoring data exist (e.g., under-counts of abundance). By integrating multiple sources of data, we can assess whether various sources of monitoring data provide consistent inferences...

Johnson, Fred; Zimmerman, Guthrie S.; Jensen, Gitte H.; Clausen, Kevin K.; Frederiksen, Morten; Madsen, Jesper

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Year Published: 2020

Coastal marsh bird habitat selection and responses to Hurricane Sandy

Wetlands provide numerous ecosystem functions such as water purification, nutrient cycling, and wildlife habitat. Avian populations are indicators of wetland health, and understanding their responses to extreme events can aid in targeting restoration efforts following disturbance. Here, we assessed the habitat selection of six coastal wetland bird...

Benscoter, Allison; Beerens, James; Romanach, Stephanie

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Year Published: 2020

Petroleum hydrocarbons in semipermeable membrane devices deployed in the Northern Gulf of Mexico and Florida keys following the Deepwater Horizon incident

The Deepwater Horizon (DWH) oil spill from April to July of 2010 contaminated Gulf of Mexico waters through release of an estimated 4.1 × 106 barrels of oil. Beginning in June of 2010, semipermeable membrane devices (SPMDs) were deployed near areas with sensitive marine habitats (Alabama Alps and Western Shelf) potentially exposed...

Bargar, Timothy; Alvarez, David; Stout, Scott A.

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Year Published: 2020

Asymptotic population abundance of a two-patch system with asymmetric diffusion

This paper considers a two-patch system with asymmetric diffusion rates, in which exploitable resources are included. By using dynamical system theory, we exclude periodic solution in the one-patch subsystem and demonstrate its global dynamics. Then we exhibit uniform persistence of the two-patch system and demonstrate uniqueness of the positive...

Fang, Mengting; Wang, Yuanshi; Chen, Mingshu; DeAngelis, Donald L.

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USGS boat crew prepares for a discharge measurement during May 2011 Memphis, Tennessee flooding
May 4, 2011

USGS boat crew prepares for a discharge measurement

USGS boat crew prepares for a discharge measurement during May 2011 Memphis, Tennessee flooding

April 20, 2011

Climate Connections: Visiting Students in North Carolina (Episode 1)

America has questions about climate change, and the USGS has real answers. In this episode of Climate Connections, USGS scientists answer questions gathered from middle and high school students in Mt. Airy, NC.

  • Do all scientists agree that climate change is occurring?
  • Could climate change impact fishing?
  • Will the climate change abruptly or
USGS
April 18, 2011

USGS Hydrologic Investigation of West Africa's Congo River (part 3)

USGS South Carolina Water Science Center Data Chief, John Shelton in a special hydrologic expedition down the Congo River, West Africa. Part three of the three part episode, reveals a hydrologic data set that changed the world record books.

Tangled web of prop roots from red mangrove trees, intermixed with black mangroves and white mangroves farther back in the photo
April 13, 2011

Mangrove forest, Shark River Slough, Everglades National Park

Tangled web of prop roots from red mangrove trees, intermixed with black mangroves and white mangroves farther back in the forest.  Mangrove forests cover much of the southwestern coastal region of Everglades National Park.  The red mangroves are the most salinity tolerant and grow with their prop roots in the water or within the range of high tide.

Rainbow Springs, Florida, USA
March 11, 2011

Spring water is usually clear and cool, which attracts swimmers.

Rainbow Springs, Florida, USA

A spring is a water resource formed when the side of a hill, a valley bottom or other excavation intersects a flowing body of groundwater at or below the local water table, below which the subsurface material is saturated with water. A spring is the result of an aquifer being filled to the point that the water overflows

...
USGS CoreCast
March 6, 2011

Groundwater Awareness Week is March 6-12

Groundwater is not a single vast pool of underground water; rather, it is contained within a variety of aquifer systems. Each of these aquifers has its own set of questions and challenges. From large drawdowns in the Great Plains aquifer to arsenic in some wells in New England, this episode of CoreCast highlights six different USGS groundwater studies all across the United

Photo of bleaching colony of elliptical star coral, Dichocoenia stokesii, Florida Keys.
August 17, 2010

Bleaching colony of elliptical star coral, Dichocoenia stokesii

Bleaching colony of elliptical star coral, Dichocoenia stokesii, 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 colony of elliptical star coral, Dichocoenia stokesii
August 17, 2010

Bleaching colony of elliptical star coral, Dichocoenia stokesii

Bleaching colony of elliptical star coral, Dichocoenia stokesii, 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 colony of symmetrical brain coral, Diploria strigosa
August 17, 2010

Bleaching colony of symmetrical brain coral, Diploria strigosa

Bleaching colony of symmetrical brain coral, Diploria strigosa, 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 symmetrical brain coral, Diploria strigosa
August 17, 2010

Bleaching colony of symmetrical brain coral, Diploria strigosa

Bleaching colony of symmetrical brain coral, Diploria strigosa, 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

...
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USGS science for a changing world logo
September 6, 2005

The USGS is releasing today a 25-minute videotape of footage showing coastal impacts resulting from Hurricane Katrina along the coastline of the northern Gulf of Mexico.

USGS
September 2, 2005

 

The USGS has posted aerial photos from the northern Gulf of Mexico coastline showing before and after conditions in response to Hurricane Katrina. The photos show five photo pairs of the Chandeleur Islands, Louisiana, and three photo pairs of Dauphin Island, Alabama. A set of ‘quick response’ photos from Bay St. Louis to Biloxi, Mississippi are also posted.

USGS science for a changing world logo
September 2, 2005

 

The USGS has posted aerial photos from the northern Gulf of Mexico coastline showing before and after conditions in response to Hurricane Katrina. The photos show five photo pairs of the Chandeleur Islands, Louisiana, and three photo pairs of Dauphin Island, Alabama. A set of ‘quick response’ photos from Bay St. Louis to Biloxi, Mississippi are also posted.

USGS science for a changing world logo
September 2, 2005

"The past several days have seen remarkable devastation resulting from Hurricane Katrina. Our thoughts and prayers are with everyone who has been affected by this disaster," said USGS Acting Director Pat Leahy. "In the aftermath of Katrina, USGS research on hurricanes and natural hazards is no longer just a scientific endeavor – it is a matter of public safety."

USGS
August 29, 2005

Did you know that from your desk you can monitor the effect of Hurricane Katrina as it moves inland? The U.S. Geological Survey’s (USGS) WaterWatch Web site can show you what’s happening to streams in your local area and show you the places most affected by heavy rains expected from this storm.

USGS science for a changing world logo
August 29, 2005

Did you know that from your desk you can monitor the effect of Hurricane Katrina as it moves inland? The U.S. Geological Survey’s (USGS) WaterWatch Web site can show you what’s happening to streams in your local area and show you the places most affected by heavy rains expected from this storm.

USGS science for a changing world logo
August 26, 2005

Did you know that from your desk you can monitor the effect of Hurricane Katrina on Florida’s waterways? The U.S. Geological Survey’s (USGS) WaterWatch Web site can show you what’s happening to streams in your local area and show you the places most affected by heavy rains expected from the storm.

USGS
August 26, 2005

Did you know that from your desk you can monitor the effect of Hurricane Katrina on Florida’s waterways? The U.S. Geological Survey’s (USGS) WaterWatch Web site can show you what’s happening to streams in your local area and show you the places most affected by heavy rains expected from the storm.

USGS science for a changing world logo
August 2, 2005

U.S. Geological Survey fisheries biologists in Gainesville, Fla., have confirmed the presence of the voracious non-native northern snakehead fish in Meadow Lake in Queens, N.Y. Five specimens have been collected by the New York State Department of Environmental Conservation from the lake in Flushing Meadows Corona Park since early July.

USGS
August 1, 2005

In its latest report on water use in the United States, the USGS looked at the nation's dependence on ground water. The report entitled Estimated Withdrawals from Principal Aquifers in the United States, 2000, provides details of ground-water withdrawals and use from principal aquifers in each state.

USGS science for a changing world logo
July 27, 2005

A team of scientists from the U.S. Geological Survey (USGS) is tracking and collecting samples from a large African dust cloud that originated in the Sahara Desert and is moving over parts of Florida and the Caribbean.

USGS
July 27, 2005

A team of scientists from the U.S. Geological Survey (USGS) is tracking and collecting samples from a large African dust cloud that originated in the Sahara Desert and is moving over parts of Florida and the Caribbean.

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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