Regions

Southeast

Regions L2 Landing Page Tabs

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.

Filter Total Items: 233
Red gumstand located along the Tensas River in Greenlea Bend in 1935
Date Published: May 6, 2016

Two Hundred Years of Forest Change in the Tensas River Basin

Prescriptions in the forest habitat management plan for Tensas River National Wildlife Refuge are designed to produce a forest once represented in the Tensas Basin. There are several problems with reconstructing original forests. In most areas, conditions have changed since these forests were cut; particularly, hydrology, soils, and climatic conditions.

Oysters in Chicopit Bay (south shore, looking southwest)
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
Field Guide to the Nonindigenous Marine Fishes of Florida
Date Published: May 2, 2016
Status: Active

Detection, tracking, and removal of non-native marine fishes in Florida

Thirty-four species of non-native marine fishes have been documented in Florida, and their distributions are currently being tracked via the US Geological Survey’s Nonindigenous Aquatic Species (USGS-NAS) database.

Lionfish are spreading through the Western North Atlantic, Caribbean Sea, and the Gulf of Mexico
Date Published: May 2, 2016

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.

Pike Killifish (Belonesox belizanus)
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.

Example from USGS OFR-418 of Penland et al. 2001.
Date Published: April 25, 2016
Status: Active

Investigation of Causal Mechanisms of Coastal Wetland Change in Coastal Louisiana

This task will involve the compilation of all data sources and expert knowledge of causal mechanisms of specific areas of wetland loss throughout the coastal zone of Louisiana.

Land Area Change in Coastal Louisiana (1932 to 2010)
Date Published: April 25, 2016
Status: Active

Hyper-Temporal Land Area Change Rates in Coastal Louisiana from 1973 to 2015

This study analyzes changes in the extent of land in coastal Louisiana by using an average of 81 datasets (multiple dates of satellite data from 1973 to 2014) for summarizing land and water areas.

JEM Biological Data Viewer
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.

Everglades Wood Stork Foraging Potential Model
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
Coastal Protection and Restoration Authority
Date Published: April 25, 2016
Status: Active

Supporting Large-scale Biological Monitoring and Modeling through Data Management and Visualization: Coastal Information Management System (CIMS)

The Coastal Protection and Restoration Authority (CPRA) and USGS have partnered to utilize the data management and visualization capacities of the Wetland and Aquatic Research Center’s Advanced Application Team to manage, deliver, and visualize the largest biological dataset maintained in coastal Louisiana.

The National Map
Date Published: April 19, 2016

National Geospatial Program User Engagement Office

Would you like to learn more about USGS National Map products and services? Then welcome to the National Geospatial Program User Engagement office. We can help you leverage NGP products and services through The National Map and other venues. Connect with us through our network of National Map Liaisons. There's a liaison for every state!

Swamp tree growth study sites on the southern United States
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.

Filter Total Items: 172
Publication Thumbnail
Year Published: 2016

Salt marsh-mangrove ecotones: using structural gradients to investigate the effects of woody plant encroachment on plant-soil interactions and ecosystem carbon pools

Changing winter climate extremes are expected to result in the poleward migration of mangrove forests at the expense of salt marshes. Although mangroves and marshes are both highly valued ecosystems, the ecological implications of mangrove expansion have not been fully investigated. Here, we examined the effects of mangrove expansion on below-...

Yando, Erik S.; Osland, Michael J.; Willis, Jonathan M; Day, Richard H.; Krauss, Ken W.; Hester, Mark W.
Yando, E.S., Osland, M.J., Willis, J.M., Day, R.H., Krauss, K.W., and Hester, M.W., 2016, Salt marsh-mangrove ecotones: using structural gradients to investigate the effects of woody plant encroachment on plant-soil interactions and ecosystem carbon pools: Journal of Ecology, v. 104, no. 4, p. 1020-1031, http://dx.doi.org/10.111/1365-2745.12571.

Publication Thumbnail
Year Published: 2016

Tidal saline wetland regeneration of sentinel vegetation types in the Northern Gulf of Mexico: An overview

Tidal saline wetlands in the Northern Gulf of Mexico (NGoM) are dynamic and frequently disturbed systems that provide myriad ecosystem services. For these services to be sustained, dominant macrophytes must continuously recolonize and establish after disturbance. Macrophytes accomplish this regeneration through combinations of vegetative...

Jones, Scott F; Stagg, Camille L.; Krauss, Ken W.; Hester, Mark W.
Scott F. Jones, Camille L. Stagg, Ken W. Krauss, Mark W. Hester. 2016. Tidal Saline Wetland Regeneration of Sentinel Vegetation Types in the Northern Gulf of Mexico: An Overview. Estuarine, Coastal and Shelf Science.

Publication Thumbnail
Year Published: 2016

The effects of large beach debris on nesting sea turtles

A field experiment was conducted to understand the effects of large beach debris on sea turtle nesting behavior as well as the effectiveness of large debris removal for habitat restoration. Large natural and anthropogenic debris were removed from one of three sections of a sea turtle nesting beach and distributions of nests and false crawls (non-...

Fujisaki, Ikuko; Lamont, Margaret M.
Fujisaki, I., and Lamont, M.M., 2016, The effects of large beach debris on nesting sea turtles: Journal of Experimental Marine Biology and Ecology, v. 482, p. 33-37, http://dx.doi.org/10.1016/j.jembe.2016.04.005.

Publication Thumbnail
Year Published: 2016

Modeling suitable habitat of invasive red lionfish Pterois volitans (Linnaeus, 1758) in North and South America’s coastal waters

We used two common correlative species-distribution models to predict suitable habitat of invasive red lionfish Pterois volitans (Linnaeus, 1758) in the western Atlantic and eastern Pacific Oceans. The Generalized Linear Model (GLM) and the Maximum Entropy (Maxent) model were applied using the Software for Assisted Habitat Modeling. We compared...

Evangelista, Paul H.; Young, Nicholas E.; Schofield, Pamela J.; Jarnevich, Catherine S.
Evangelista, P.H., Young, N.E., Schofield, P.J., and Jarnevich, C.S., 2016, Modeling suitable habitat of invasive red lionfish Pterois volitans (Linnaeus, 1758) in North and South America’s coastal waters: Aquatic Invasions, Open Access, http://www.aquaticinvasions.net/2016/AI_2016_Evangelista_etal.pdf. DOI: 10.3391/ai.2016.11.3.09

Publication Thumbnail
Year Published: 2016

Hydrothermal vents and methane seeps: Rethinking the sphere of influence

Although initially viewed as oases within a barren deep ocean, hydrothermal vent and methane seep communities are now recognized to interact with surrounding ecosystems on the sea floor and in the water column, and to affect global geochemical cycles. The importance of understanding these interactions is growing as the potential rises for...

Levin, Lisa A.; Baco, Amy; Bowden, David; Colaco, Ana; Cordes, Erik E.; Cunha, Marina; Demopoulos, Amanda W.J.; Gobin, Judith; Grupe, Ben; Le, Jennifer; Metaxas, Anna; Netburn, Amanda; Rouse, Greg; Thurber, Andrew; Tunnicliffe, Verena; Van Dover, Cindy L.; Vanreusel, Ann; Watling, Les
Levin, L., Baco, A., Bowden, D., Colaco, A., Cordes, E., Cunha, M., Demopoulos, A.W., Gobin, J., Grupe, B., Le, J., Metaxas, A., Netburn, A., Rouse, G., Thurber, A., Tunnicliffe, V., Van Dover, C., Vanreusel, A., and Watling, L., 2016, Hydrothermal vents and methane seeps: rethinking the sphere of influence: Frontiers in Marine Science, Online Early, v. 3, p. 72-xx, http://dx.doi.org/10.3389/fmars.2016.00072 or http://journal.frontiersin.org/article/10.3389/fmars.2016.00072/abstract.

Publication Thumbnail
Year Published: 2016

Drivers of barotropic and baroclinic exchange through an estuarine navigation channel in the Mississippi River Delta Plain

Estuarine navigation channels have long been recognized as conduits for saltwater intrusion into coastal wetlands. Salt flux decomposition and time series measurements of velocity and salinity were used to examine salt flux components and drivers of baroclinic and barotropic exchange in the Houma Navigation Channel, an estuarine channel located in...

Snedden, Gregg
Snedden, G.A., 2016, Drivers of barotropic and baroclinic exchange through an estuarine navigation channel in the Mississippi River Delta Plain: Water, v. 8, no. 5, art. 184, 15 p., http://dx.doi.org/10.3390/w8050184.

Publication Thumbnail
Year Published: 2016

Hydrologic exchanges and baldcypress water use on deltaic hummocks, Louisiana, USA

Coastal forested hummocks support clusters of trees in the saltwater–freshwater transition zone. To examine how hummocks support trees in mesohaline sites that are beyond physiological limits of the trees, we used salinity and stable isotopes (2H and 18O) of water as tracers to understand water fluxes in hummocks and uptake by baldcypress (...

Hsueh, Yu-Hsin; Chambers, Jim L.; Krauss, Ken W.; Allen, Scott T.; Keim, Richard F.
Hsueh, Y.-H., Chambers, J.L., Krauss, K.W., Allen, S.T., and Keim, R.F., 2016, Hydrologic exchanges and baldcypress water use on deltaic hummocks, Louisiana, USA: Ecohydrology (2016) Early View, http://dx.doi.org/10.1002/eco.1738.

Publication Thumbnail
Year Published: 2016

Fluctuating water depths affect American alligator (Alligator mississippiensis) body condition in the Everglades, Florida, USA

Successful restoration of wetland ecosystems requires knowledge of wetland hydrologic patterns and an understanding of how those patterns affect wetland plant and animal populations.Within the Everglades, Florida, USA restoration, an applied science strategy including conceptual ecological models linking drivers to indicators is being used to...

Brandt, Laura A.; Beauchamp, Jeffrey S.; Jeffery, Brian M.; Cherkiss, Michael S.; Mazzotti, Frank J.
Brandt, L.A., Beauchamp, J.S., Jeffery, B.M., Cherkiss, M.S., and Mazzotti, F.J., 2016, Fluctuating water depths affect American alligator (Alligator mississippiensis) body condition in the Everglades, Florida, USA: Ecological Indicators, v. 67, p. 441-450, http://dx.doi.org/10.1016/j.ecolind.2016.03.003 or http://www.sciencedirect.com/science/article/pii/S1470160X16301078.

Publication Thumbnail
Year Published: 2016

Impacts of climate change on mangrove ecosystems: A region by region overview

Inter-related and spatially variable climate change factors including sea level rise, increased storminess, altered precipitation regime and increasing temperature are impacting mangroves at regional scales. This review highlights extreme regional variation in climate change threats and impacts, and how these factors impact the structure of...

Ward, Raymond D.; Friess, Daniel A.; Day, Richard H.; MacKenzie, Richard A.
Ward, R.D., Friess, D.A., Day, R.H., and MacKenzie, R.A., 2016, Impacts of climate change on mangrove ecosystems: A region by region overview: Ecosystem Health and Sustainability, v. 2, no. 4, art. e01211: http://dx.doi.org/10.1002/ehs2.1211 or http://onlinelibrary.wiley.com/doi/10.1002/ehs2.1211/full.

Publication Thumbnail
Year Published: 2016

Tree island pattern formation in the Florida Everglades

The Florida Everglades freshwater landscape exhibits a distribution of islands covered by woody vegetation and bordered by marshes and wet prairies. Known as “tree islands”, these ecogeomorphic features can be found in few other low gradient, nutrient limited freshwater wetlands. In the last few decades, however, a large percentage of...

Carr, Joel A.; D'Odorico, P.; Engel, Victor C.; Redwine, Jed
Carr, J., D'Odorico, P., Engel, V., and Redwine, J., 2016, Tree island pattern formation in the Florida Everglades: Ecological Complexity, v. 26, p. 37-44.

Publication Thumbnail
Year Published: 2016

Ecosystem level methane fluxes from tidal freshwater and brackish marshes of the Mississippi River Delta: Implications for coastal wetland carbon projects

Sulfate from seawater inhibits methane production in tidal wetlands, and by extension, salinity has been used as a general predictor of methane emissions. With the need to reduce methane flux uncertainties from tidal wetlands, eddy covariance (EC) techniques provide an integrated methane budget. The goals of this study were to: 1) establish...

Holm, Guerry O.; Perez, Brian C.; McWhorter, David E.; Krauss, Ken W.; Johnson, Darren J.; Raynie, Richard C.; Killebrew, Charles J.
Holm, G.O., Jr., Perez, B.C., McWhorter, D.E., Krauss, K.W., Johnson, D.J., Raynie, R.C., and Killebrew, C.J., 2016, Ecosystem level methane fluxes from tidal freshwater and brackish marshes of the Mississippi River Delta: implications for coastal wetland carbon projects: Wetlands, v. 36, no. 3, p. 401-413, http://dx.doi.org/10.1007/s13157-016-0746-7.

Publication Thumbnail
Year Published: 2016

Influence of manatees' diving on their risk of collision with watercraft

Watercraft pose a threat to endangered Florida manatees (Trichechus manatus latirostris). Mortality from watercraft collisions has adversely impacted the manatee population’s growth rate, therefore reducing this threat is an important management goal. To assess factors that contribute to the risk of watercraft strikes to manatees, we studied...

Edwards, Holly H.; Martin, Julien; Deutsch, Charles J.; Muller, Robert G; Koslovsky, Stacie M.; Smith, Alexander J.; Barlas, Margie E.
Edwards, H.H., Martin, J., Deutsch, C.J., Muller, R.G., Koslovsky, S.M., Smith, A.J., and Barlas, M.E., 2016, Influence of manatees' diving on their risk of collision with watercraft: Plos One, v. 11, no. 4, art. e0151450, http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0151450 or http://dx.doi.org/10.1371/journal.pone.0151450.