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We conduct impartial, multi- and interdisciplinary research and monitoring on a large range of natural-resource issues that impact the quality of life of citizens and landscapes of the Southeastern United States and the Caribbean region.

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Weighing sturgeon prior to tagging
August 1, 2016

The Gulf sturgeon, Acipenser oxyrinchus desotoi, has been listed as Threatened since 1991. Beginning in 1986, USGS has been investigating sturgeon population abundance and ecology throughout its range, but mostly in the Suwannee River.

Port of the Islands (POI) basin
August 1, 2016

Critical information predicting condition changes in manatee habitat resulting from the alteration of freshwater flows to estuaries is needed to develop the PSRP Detailed Design and PSRP Operations Plan components and complete consultation under the Endangered Species Act.

Validated modeling and sampling methodology
August 1, 2016

Turbid water conditions make the delineation and characterization of benthic habitats difficult by traditional in situ and remote sensing methods. Consequently, only a small fraction of this valuable resource has been mapped or characterized....

Student Intern Alejandro Grajal-Puche holds an Argentine black and white tegu lizard.
July 7, 2016

This project involves ongoing development of tools for the detection and capture of invasive reptiles in Florida, with an emphasis on Burmese pythons (Python bivittatus) and Black and white tegu lizards (Salvator merianae). The goals are to reduce the risk of reptile invasions in high-value resources such as Everglades National Park and the Florida Keys, to access early...

The CWPPRA outreach staff at WARC speaking to a large group
June 22, 2016

The Coastal Wetlands Planning, Protection and Restoration Act (CWPPRA) is federal legislation enacted in 1990 designed to identify, prepare, and fund construction of coastal wetlands restoration projects.

Ornate Chorus Frog, Pseudacris ornata
June 17, 2016

Freshwater wetlands provide critical habitat for a diverse array of organisms, including many amphibians. Yet, under the threat of climate change, these habitats are among the most imperiled ecosystems on Earth.

Three pythons well camoflaged
June 16, 2016

Detecting invasive species at low densities or prior to population establishment is critical for successful control and eradication. For example, Burmese pythons occupy thousands of square kilometers of mostly inaccessible habitats.

Florida Manatee with a tracking devise attached
June 16, 2016

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....

Tagging a Gulf sturgeon
June 13, 2016

It's hard to imagine a better job than doing fieldwork with the USGS Coastal Ecology crew as they work to keep tabs on the Gulf sturgeon population....

Figure 2. Approximate boundaries of Chitimacha indigenous lands. Image courtesy Native American Law
June 2, 2016

This project will create a Climate Change Adaptation Plan for the Chitimacha Tribe of Louisiana (Chitimacha), serving as an implementable plan for coastal community adaptation to climate change that can be used as a model in other small communities.

Figure 2. Three Dimensional LAI Profiles.
May 26, 2016

While the historic focus of vegetation condition is the bulk live and dead compositions, these variables provide no information on the structure of vegetation (density and orientation). Canopy structure information is critical for monitoring status and trends, and essential in climate, weather, and ecological studies.

Bullseye snakehead (Channa marulius)
May 23, 2016

May 23, 2016 – Five teams of fishery biologists from the U.S. Geological Survey (USGS), Florida Fish and Wildlife Conservation Commission (FWC), the National Park Service (NPS), Florida Museum of Natural History (FLMNH), University of Florida (UF), and Florida International University (FIU) sampled 12 sites for non-native fishes in Broward and Miami-Dade counties in southeastern Florida...

Filter Total Items: 168
Are we working towards global research priorities for management and conservation of sea turtles?
Year Published: 2016

Are we working towards global research priorities for management and conservation of sea turtles?

In 2010, an international group of 35 sea turtle researchers refined an initial list of more than 200 research questions into 20 metaquestions that were considered key for management and conservation of sea turtles. These were classified under 5 categories: reproductive biology, biogeography, population ecology, threats and conservation strategies...

Rees, A.F.; Alfaro-Shigueto, J.; Barata, P.C.R.; Bjorndal, K.A.; Bolten, A.B.; Bourjea, J.; Broderick, A.C.; Campbell, L.M.; Cardona, L.; Carreras, C.; Casale, P.; Ceriani, S.A.; Dutton, P.H.; Eguchi, T.; Formia, A.; Fuentes, M.M.P.B.; Fuller, W.J.; Girondot, M.; Godfrey, M.H.; Hamann, M.; Hart, Kristen M.; Hays, G.C.; Hochscheid, S.; Kaska, Y.; Jensen, M.P.; Mangel, J.C.; Mortimer, J.A.; Naro-Maciel, E.; Ng, C.K.Y.; Nichols, W.J.; Phillott, A.D.; Reina, R.D.; Revuelta, O.; Schofield, G.; Seminoff, J.A.; Shanker, K.; Tomas, J.; van de Merwe, J.P.; Van Houtan, K.S.; Vander Zanden, H.B.; Wallace, B.P.; Wedemeyer-Strombel, K.R.; Work, Thierry M.; Godley, B.J.
Overcoming challenges to the recovery of declining amphibian populations in the United States
Year Published: 2016

Overcoming challenges to the recovery of declining amphibian populations in the United States

The US Endangered Species Act of 1973 (ESA) affords many potential benefits to species threatened with extinction. However, most at-risk amphibians—one of the most imperiled vertebrate groups—remain unlisted under the provisions of the ESA, and many impediments to recovery exist for those species that have been listed. Of the 35 US amphibian...

Walls, Susan; Ball, Lianne C.; Barichivich, William J.; Dodd, Kenneth; Enge, Kevin M; Gorman, Thomas A.; O'Donnell, Katherine; Palis, John G; Semlitsch, Raymond D.
Walls, S.C., Ball, L.C., Barichivich, W.J., Dodd, C.K., Jr., Enge, K.M., Gorman,T.A., O'Donnell, K.M., Palis, J.G., and Semlitsch, R.D., 2016, Overcoming challenges to the recovery of declining amphibian populations in the United States: BioScience, First Online, http://dx.doi.org/10.1093/biosci/biw153.
The practice of prediction: What can ecologists learn from applied, ecology-related fields?
Year Published: 2016

The practice of prediction: What can ecologists learn from applied, ecology-related fields?

The pervasive influence of human induced global environmental change affects biodiversity across the globe, and there is great uncertainty as to how the biosphere will react on short and longer time scales. To adapt to what the future holds and to manage the impacts of global change, scientists need to predict the expected effects with some...

Pennekamp, Frank; Adamson, Matthew; Petchey, Owen L; Poggiale, Jean-Christophe; Aguiar, Maira; Kooi, Bob W.; Botkin, Daniel B.; DeAngelis, Don
Pennekamp, F., Adamson, M.W., Petchey, O.L., Poggiale, J.-C., Aguiar, M., Kooi, B.W., Botkin, D.B., and DeAngelis, D.L., 2016, The practice of prediction: What can ecologists learn from applied, ecology-related fields?: Ecological Complexity, Available Online, http://dx.doi.org/10.1016/j.ecocom.2016.12.005.
Barrier island breach evolution: Alongshore transport and bay-ocean pressure gradient interactions
Year Published: 2016

Barrier island breach evolution: Alongshore transport and bay-ocean pressure gradient interactions

Physical processes controlling repeated openings and closures of a barrier island breach between a bay and the open ocean are studied using aerial photographs and atmospheric and hydrodynamic observations. The breach site is located on Pea Island along the Outer Banks, separating Pamlico Sound from the Atlantic Ocean. Wind direction was a major...

Safak, Ilgar; Warner, John C.; List, Jeffrey
Safak, I., J. C. Warner, and J. H. List (2016), Barrier island breach evolution: Alongshore transport and bay-ocean pressure gradient interactions, J. Geophys. Res. Oceans, 121, doi:10.1002/2016JC012029.
Mechanisms of aquatic species invasions across the South Atlantic Landscape Conservation Cooperative region
Year Published: 2016

Mechanisms of aquatic species invasions across the South Atlantic Landscape Conservation Cooperative region

Invasive species are a global issue, and the southeastern United States is not immune to the problems they present. Therefore, various analyses using modeling and exploratory statistics were performed on the U.S. Geological Survey Nonindigenous Aquatic Species (NAS) Database with the primary objective of determining the most appropriate use of...

Benson, Amy J.; Stith, Bradley M.; Engel, Victor C.
Benson, A.J., Stith, B.M., and Engel, V.C., 2016, Mechanisms of aquatic species invasions across the South Atlantic Landscape Conservation Cooperative region: U.S. Geological Survey Scientific Investigations Report 2016–5148, 68 p., https://doi.org/10.3133/sir20165148.
A rare Uroglena bloom in Beaver Lake, Arkansas, spring 2015
Year Published: 2016

A rare Uroglena bloom in Beaver Lake, Arkansas, spring 2015

A combination of factors triggered a Uroglena volvox bloom and taste and odor event in Beaver Lake, a water-supply reservoir in northwest Arkansas, in late April 2015. Factors contributing to the bloom included increased rainfall and runoff containing increased concentrations of dissolved organic carbon, followed by a stable pool, low nutrient...

William R. Green and Brad Hufhines
A modeling study of the impacts of Mississippi River diversion and sea-level rise on water quality of a deltaic estuary
Year Published: 2016

A modeling study of the impacts of Mississippi River diversion and sea-level rise on water quality of a deltaic estuary

Freshwater and sediment management in estuaries affects water quality, particularly in deltaic estuaries. Furthermore, climate change-induced sea-level rise (SLR) and land subsidence also affect estuarine water quality by changing salinity, circulation, stratification, sedimentation, erosion, residence time, and other physical and ecological...

Wang, Hongqing; Chen, Qin; Hu, Kelin; LaPeyre, Megan K.
Determining the spatial variability of wetland soil bulk density, organic matter, and the conversion factor between organic matter and organic carbon across coastal Louisiana, U.S.A.
Year Published: 2016

Determining the spatial variability of wetland soil bulk density, organic matter, and the conversion factor between organic matter and organic carbon across coastal Louisiana, U.S.A.

Soil bulk density (BD), soil organic matter (SOM) content, and a conversion factor between SOM and soil organic carbon (SOC) are often used in estimating SOC sequestration and storage. Spatial variability in BD, SOM, and the SOM–SOC conversion factor affects the ability to accurately estimate SOC sequestration, storage, and the benefits (e.g.,...

Wang, Hongqing; Piazza, Sarai C.; Sharp, Leigh A.; Stagg, Camille L.; Couvillion, Brady R.; Steyer, Gregory D.; McGinnis, Thomas E.
Wang, H., Piazza, S.C., Sharp, L.A., Stagg, C.L., Couvillion, B.R., Steyer, G.D., and McGinnis, T.E., 2016, Determining the spatial variability of wetland soil bulk density, organic matter, and the conversion factor between organic matter and organic carbon across coastal Louisiana, U.S.A.: Journal of Coastal Research, http://www.jcronline.org/doi/abs/10.2112/JCOASTRES-D-16-00014.1, and http://dx.doi.org/10.2112/JCOASTRES-D-16-00014.1.
Morphometric body condition indices of wild Florida manatees (Trichechus manatus latirostris)
Year Published: 2016

Morphometric body condition indices of wild Florida manatees (Trichechus manatus latirostris)

In many species, body weight (W) increases geometrically with body length (L), so W/L3 provides a body condition index (BCI) that can be used to evaluate nutritional status once a normal range has been established. No such index has been established for Florida manatees (Trichechus manatus latirostris). This study was designed to determine a...

Harshaw, Lauren T.; Larkin, Iskande V.; Bonde, Robert K.; Deutsch, Charles J.; Hill, Richard C.
Marine ecoregion and Deepwater Horizon oil spill affect recruitment and population structure of a salt marsh snail
Year Published: 2016

Marine ecoregion and Deepwater Horizon oil spill affect recruitment and population structure of a salt marsh snail

Marine species with planktonic larvae often have high spatial and temporal variation in recruitment that leads to subsequent variation in the ecology of benthic adults. Using a combination of published and unpublished data, we compared the population structure of the salt marsh snail, Littoraria irrorata, between the South Atlantic Bight and the...

Pennings, Steven C.; Zengel, Scott; Oehrig, Jacob; Alber, Merryl; Bishop, T. Dale; Deis, Donald R.; Devlin, Donna; Hughes, A. Randall; Hutchens, John J.; Kiehn, Whitney M.; McFarlin, Caroline R.; Montague, Clay L.; Powers, Sean P.; Proffitt, C. Edward; Rutherford, Nicolle; Stagg, Camille L.; Walters, Keith
Pennings, S.C., Zengel, S., Oehrig, J., Alber, M., Bishop, T.D., Deis, D.R., Devlin, D., Hughes, A.R., Hutchens, J.J., Jr., Kiehn, W.M., McFarlin, C.R., Montague, C.L., Powers, S., Proffitt, C.E., Rutherford, N., Stagg, C.L., and Walters, K., 2016, Marine ecoregion and the Deepwater Horizon oil spill affect recruitment and population structure of a salt marsh snail: Ecosphere, v. 7, no. 12, art. e01588, http://dx.doi.org/10.1002/ecs2.1588.
Mechanisms of aquatic species invasions across the South Atlantic Landscape Conservation Cooperative region
Year Published: 2016

Mechanisms of aquatic species invasions across the South Atlantic Landscape Conservation Cooperative region

The Nonindigenous Aquatic Species Database (NAS) information resource is an established central repository for spatially referenced biogeographic accounts of introduced aquatic species. The NAS website provides scientific reports, online/real-time queries, spatial data sets, distribution maps, fact sheets, and general information.

Benson, Amy J.
Benson, A.J., 2016, Mechanisms of aquatic species invasions across the South Atlantic Landscape Conservation Cooperative region: U.S. Geological Survey data release, https://doi.org/10.5066/F75X2721.
Characterizing the early life history of an imperiled freshwater mussel (Ptychobranchus jonesi)
Year Published: 2016

Characterizing the early life history of an imperiled freshwater mussel (Ptychobranchus jonesi)

Conservation of imperiled species is frequently challenged by insufficient knowledge of life history and the environmental factors that affect various life stages. The larvae (glochidia) of most freshwater mussels in the family Unionidae are obligate ectoparasites of fishes. We describe the early life history of the federally endangered Southern...

Mcleod, John; Jelks, Howard; Pursifull, Sandra; Johnson, Nathan A.
McLeod, J.M., Jelks, H., Pursifull, S., and Johnson, N.A., 2016, Characterizing the early life history of an imperiled freshwater mussel (Ptychobranchus jonesi): U.S. Geological Survey data release, http://dx.doi.org/10.5066/F7FT8J5T.
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Michelle Collier of the USGS holding a black and white Tegu lizard.
2014 (approx.)
Invasive Species biological science technician Michelle Collier holds an invasive black and white Tegu lizard.
Coastal wetlands near Port Fourchon, Louisiana, in the northern Gulf of Mexico
2013 (approx.)
To understand how changes in rainfall and temperature might affect coastal wetlands in the northern Gulf of Mexico, USGS researchers conducted field studies at 10 estuaries in five states (Texas, Louisiana, Mississippi, Alabama, and Florida). The fieldwork took place in a variety of coastal wetland types, including mangroves, marshes, and salt flats.
Wading birds feed near wooden posts marking a research site in a Louisiana salt marsh
2013 (approx.)
To understand how changes in rainfall and temperature might affect coastal wetlands in the northern Gulf of Mexico, USGS researchers conducted field studies at 10 estuaries in five states (Texas, Louisiana, Mississippi, Alabama, and Florida). The fieldwork took place in a variety of coastal wetland types, including mangroves, marshes, and salt flats. At this site in Port Fourchon, Louisiana,...
A large boulder-shaped Massive Starlet coral on the sea floor in Dry Tortugas National Park
May 2012 (approx.)
Scientists used a core from this Massive Starlet ( Siderastrea siderea ) coral colony in Dry Tortugas National Park to reconstruct ocean temperatures going back to 1837. Photo: USGS
Oblique aerial photograph near Rodanthe, NC, looking south along the coast on August 30, 2011, three days after landfall of Hurr
August 30, 2011
Oblique aerial photograph near Rodanthe, North Carolina, looking south along the coast on August 30, 2011, three days after landfall of Hurricane Irene.
cientists collecting bed-sediment samples from Suwanee Creek, Georgia
May 23, 2007
U.S. Geological Survey (USGS) scientists collecting bed-sediment samples from Suwanee Creek, Gwinnett County, Georgia, on May 23, 2007.
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USGS logo
November 17, 2015

Fact sheets that detail information about parish water resources and water-use are available online for 34 of the state’s 64 parishes, with more coming soon.

USGS logo
November 10, 2015

A new interactive Flood Inundation Map to improve flood warnings and assist with emergency management along Big Creek in Alpharetta and Roswell, Georgia, was debuted during a ceremony today in Alpharetta’s Rock Mill Park.

Gator
October 28, 2015

Alligators and the Everglades go hand-in-hand, and as water conditions change in the greater Everglades ecosystem, gators are one of the key species that could be affected.

Satellite image of the Gulf of Mexico and coastline, Gulf Hypoxic Zone
October 19, 2015

Hypoxia sounds as bad as it is. It refers to an environment that is too low on oxygen to sustain most aerobic life, particularly an aquatic environment. Hypoxia is most problematic when it happens where oxygen is normally plentiful, because most living organisms require oxygen to continue living.

Image: USGS Scientist Inspects Streamgage During Flooding Event
October 5, 2015

Heavy rains and hazardous weather conditions are occurring in western South Carolina, with record flooding occurring and more expected over parts of the region over the next several days.

USGS logo
October 2, 2015

Currently, heavy rains and hazardous weather conditions are predicted for western North Carolina and most of South Carolina by the National Weather Service, with flooding possible over parts of the region over the next several days.

Image: Giant African Land Snail
July 9, 2015

The invasive giant African land snail is expanding its range in Miami, and with it, the range of the parasitic rat lungworm, according to new U.S. Geological Survey led research.

USGS logo
June 30, 2015

Cheryl J. Hapke begins work this week as the Director of the U.S. Geological Survey’s St. Petersburg Coastal and Marine Science Center.

Wading Birds in the Everglades, Florida
June 24, 2015

Wading bird numbers in the Florida Everglades are driven by water patterns that play out over multiple years according to a new study by the U.S. Geological Survey and Florida Atlantic University.

USGS logo
April 16, 2015

Many loggerhead sea turtles that nest in Dry Tortugas National Park head to rich feeding sites in the Bahamas after nesting, a discovery that may help those working to protect this threatened species

USGS logo
April 16, 2015

New genetic data suggest the red lionfish invasion in the Caribbean Basin and Western Atlantic started in multiple locations, not just one as previously believed, according to a new study led by the U.S. Geological Survey.

USGS logo
March 25, 2015

The U.S. Geological Survey’s National Wetlands Research Center in Lafayette and the Southeast Ecological Science Center in Gainesville, Florida will merge under the same leadership effective October 1, 2015.