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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.

Filter Total Items: 233
Tagging a Gulf sturgeon
Date Published: June 13, 2016

Preserving Gulf Sturgeon—A Fish Tale of Gargantuan Proportions

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.

Contacts: Michael Randall, Tania Larson
Figure 2. Approximate boundaries of Chitimacha indigenous lands. Image courtesy Native American Law
Date Published: June 2, 2016
Status: Active

A Climate Change Adaptation Plan in Response to Sea Level Rise for the Chitimacha Tribe of Louisiana

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.

Contacts: Kathryn Spear
Figure 2. Three Dimensional LAI Profiles.
Date Published: May 26, 2016

Mapping Marsh Structure with Polarimetric Radar: Highlighting Change in Oil Spill Impacted Marshes

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)
Date Published: May 23, 2016
Status: Completed

Fish Slam - Spring 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.

Wading birds and shorebirds in TTINWR
Date Published: May 11, 2016

Impacts of Sea Level Rise & Ecosystem Restoration on Wildlife

The interior marshes of the Ten Thousand Islands National Wildlife Refuge (TTINWR) are currently negatively impacted by sea level rise through saltwater intrusion from the south which furthers mangrove encroachment into the freshwater marsh.

Live trapping of small mammals will be conducted within the PSRP footprint
Date Published: May 11, 2016
Status: Active

Assessment of Small Mammal Demographics and Communities in the Picayune Strand Restoration Area

The Picayune Strand Restoration Project (PSRP) is in the process of restoring pre-drainage hydrology to the southwest portion of the Greater Everglades ecosystem.

Small mammals make up a large proportion of python diet
Date Published: May 11, 2016
Status: Active

Assessment of Small Mammal Demographics and Communities in Everglades National Park

The decline of mammal populations in Everglades National Park (ENP) over the last 20 years is likely to influence the ecology of the Everglades system and the likelihood of successful Everglades restoration.

Satellite image of study areas
Date Published: May 11, 2016

Wildlife Indicators of Greater Everglades Restoration Progress, Climate Change, and Shifts in Ecosystem Service

As Greater Everglades restoration project implementation progresses, wetlands in near coastal areas may undergo changes in salinity, hydroperiod, and water depth.

Study sites were established near Port Fourchon, Louisiana
Date Published: May 11, 2016

Rate and Process of Mangrove Forest Expansion on Carbon Relations in Coastal Louisiana

Field observations over recent decades have confirmed mangrove expansion landward in tropical zones and poleward in temperate saltmarsh settings around the northern Gulf of Mexico.

Real-time kinematic GPS surveys combined with complimentary ground leveling
Date Published: May 11, 2016

Effect of Hurricane Wrack Deposition on Coastal Marsh Surface Elevation Change

Storm surge waves and tides of hurricanes have the propensity to wash up marsh detritus of dead reeds and leaf debris along with plastic trash and lumber, commonly referred to as wrack, from overwashed beaches, marshes, forests, streets, and lawns.

Joint Ecosystem Modeling (JEM)
Date Published: May 6, 2016
Status: Active

Joint Ecosystem Modeling: Greater Everglades Modeling Decision Support Tools

Ecological models are needed to facilitate evaluation and assessment of alternative approaches to restore Greater Everglades ecosystems. However, the provision of useful and accessible models is a challenge because there is often a disconnect between model developers and model users. Joint Ecosystem Modeling (JEM) was established to meet this challenge, with the goal of getting ecological...

Researchers capture a Burmese python in the Everglades
Date Published: May 6, 2016

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.

Filter Total Items: 174
Year Published: 2016

Storeria occipitomaculata obscura (Florida red-bellied snake)

USA: LOUISIANA: Vermilion Parish: Palmetto Island State Park (29.86335°N, 92.14848°W; WGS 84). 19 February 2016. Lindy J. Muse. Verified by Jeff Boundy. Florida Museum of Natural History (UF 177730, photo voucher). New parish record (Dundee and Rossman 1989. The Amphibians and Reptiles of Louisiana. Louisiana State University Press, Baton...

Muse, Lindy J.; Glorioso, Brad M.; Eaglestone, Chandler A. R.
Muse, L.J., Glorioso, B.M., and Eaglestone, C.A.R., 2016, Storeria occipitomaculata obscura (Florida red-bellied snake): Herpetological Review, v. 47, no. 2, p. 266.

Year Published: 2016

Osteopilus septentrionalis (Cuban treefrog)

USA: LOUISIANA: St. Tammany Parish: on private property on Allen Road in Slidell (ca. 30.262°N, 89.741°W; WGS 84). 2 April 2013. Aaron Steece. Verified by Hardin Waddle. Florida Museum of Natural History (UF 177727, photo voucher). New parish record. This adult was found ca. 2 m high on a branch at the edge of a wooded area behind a house...

Glorioso, Brad M.; Steece, Aaron; Lemann, Zachary K.; Lazare, Remy; Beck, James W.
Glorioso, B.M., Steece, A., Lemann, Z.K., Lazare, R., and Beck, J.W., 2016, Osteopilus septentrionalis (Cuban treefrog): Herpetological Review, v. 46, no. 2, p. 249.

Year Published: 2016

Response and resilience of Spartina alterniflora to sudden dieback

We measured an array of biophysical and spectral variables to evaluate the response and recovery of Spartina alterniflora to a sudden dieback event in spring and summer 2004 within a low marsh in coastal Virginia, USA. S. alterniflora is a foundation species, whose loss decreases ecosystem services and potentiates ecosystem state change. Long-term...

Marsh, Amanda; Blum, Linda K.; Christian, Robert R.; Ramsey, Elijah W.; Rangoonwala, Amina
Marsh, A., Blum, L.K., Christian, R.R., Ramsey III, E.W., and Rangoonwala, A., 2016, Response and resilience of Spartina alterniflora to sudden dieback: Journal of Coastal Conservation, v. 20, no. 4, p. 335-350,

Year Published: 2016

Do the rich get richer? Varying effects of tree species identity and diversity on the richness of understory taxa

Understory herbs and soil invertebrates play key roles in soil formation and nutrient cycling in forests. Studies suggest that diversity in the canopy and in the understory are positively associated, but these studies often confound the effects of tree species diversity with those of tree species identity and abiotic conditions. We combined...

Champagne, Juilette; Paine, C. E. Timothy; Schoolmaster, Donald; Stejskal, Robert; Volařík, Daniel; Šebesta, Jan; Trnka, Filip; Koutecký, Tomáš; Švarc, Petr; Svátek, Martin; Hector, Andy; Matula, Radim
Chamagne, J., Paine, C.E.T., Schoolmaster, D.R., Jr., Stejskal, R., Volařík, D., Ṧebesta, J., Trnka, F., Koutecký, T., Ṧvarc, P., Svátek, M., Hector, A., and Matula, R., 2016, Do the rich get richer? Varying effects of tree species identity and diversity on the richness of understory taxa: Ecology,

Year Published: 2016

Evaluating water management scenarios to support habitat management for the Cape Sable seaside sparrow

The endangered Cape Sable seaside sparrow (Ammodramus maritimus mirabilis) is endemic to south Florida and a key indicator species of marl prairie, a highly diverse freshwater community in the Florida Everglades. Maintenance and creation of suitable habitat is seen as the most important pathway to the persistence of the six existing sparrow...

Beerens, James M.; Romañach, Stephanie S.; McKelvy, Mark
Beerens, J.M., Romañach, S.S., and McKelvy, Mark. 2016, Evaluating water management scenarios to support habitat management for the Cape Sable seaside sparrow: U.S. Geological Survey Open-File Report 2016-1107, 62 p.,

Year Published: 2016

State-dependent resource harvesting with lagged information about system states

Markov decision processes (MDPs), which involve a temporal sequence of actions conditioned on the state of the managed system, are increasingly being applied in natural resource management. This study focuses on the modification of a traditional MDP to account for those cases in which an action must be chosen after a significant time lag in...

Johnson, Fred A.; Fackler, Paul L.; Boomer, G Scott; Zimmerman, Guthrie S.; Williams, Byron K.; Nichols, James D.; Dorazio, Robert
Johnson, F.A., Fackler, P.L., Boomer, G.S., Zimmerman, G.S., Williams, B.K., Nichols, J.D., and Dorazio, R.M., 2016, State-dependent resource harvesting with lagged information about system states: PlosOne, v. 11, no. 6, art. e0157373,

Year Published: 2016

A new genus and species of blind sleeper (Teleostei: Eleotridae) from Oaxaca, Mexico: First obligate cave gobiiform in the Western Hemisphere

Caecieleotris morrisi, new genus and species of sleeper (family Eleotridae), is described from a submerged freshwater cave in a karst region of the northern portion of the State of Oaxaca, Mexico, Río Papaloapan drainage, Gulf of Mexico basin. The new species represents the first cave-adapted sleeper known from the Western Hemisphere and is...

Walsh, Stephen J.; Chakrabarty, Prosanta

Year Published: 2016

Head-started Kemp’s ridley turtle (Lepidochelys kempii) nest recorded in Florida: Possible implications

A head-started Kemp’s ridley sea turtle (Lepidochelys kempii) was documented nesting on South Walton Beach, Florida on 25 May 2015. This record supports the possibility that exposure to Florida waters after being held in captivity through 1–3 yrs of age during the head-starting process may have influenced future nest site selection of...

Shaver, Donna J.; Lamont, Margaret M.; Maxwell, Sharon; Walker, Jennifer Shelby; Dillingham, Ted
Shaver, D.J., Lamont, M.M., Maxwell, S., Walker, J.S., and Dillingham, T., 2016, Head-started Kemp’s ridley turtle (Lepidochelys kempii) nest recorded in Florida: possible implications: Chelonian Conservation and Biology, v. 15, no. 1, p. 138-143,

Year Published: 2016

Physiology of the invasive apple snail Pomacea maculata: tolerance to low temperatures

Apple snails of the genus Pomacea native to South America have invaded and become established in Europe, Asia, and the United States. Both the channeled apple snail Pomacea canaliculata and the island apple snail Pomacea maculata have been reported in the United States. The two species are difficult to distinguish using morphological characters,...

Deaton, Lewis E.; Schmidt, William ; Leblanc, Brody ; Carter, Jacoby; Mueck, Kristy ; Merino, Sergio
Deaton, L.E., Schmidt, W., LeBlanc, B., Carter, J., Mueck, K., and Merino, S., 2016, Physiology of the invasive apple snail Pomacea maculata: tolerance to low temperatures: Journal of Shellfish Research, v. 35, no. 1, p. 207-210,

Year Published: 2016

Disease prevalence and snail predation associated with swell-generated damage on the threatened coral, Acropora palmata (Lamarck)

Disturbances such as tropical storms cause coral mortality and reduce coral cover as a direct result of physical damage. Storms can be one of the most important disturbances in coral reef ecosystems, and it is crucial to understand their long-term impacts on coral populations. The primary objective of this study was to determine trends in disease...

Bright, Allan J.; Rogers, Caroline S.; Brandt, Marilyn E.; Muller, Erinn; Smith, Tyler B.
Bright, A.J., Rogers, C.S., Brandt, M.E., Muller, E., and Smith, T.B., 2016, Disease prevalence and snail predation associated with swell-generated damage on the threatened coral, Acropora palmate (Lamarck): Frontiers in Marine Science, v. 3, art. 00077,

Year Published: 2016

Small but tough: What can ecophysiology of croaking gourami Trichopsis vittatus (Cuvier 1831) tell us about invasiveness of non-native fishes in Florida?

Trichopsis vittata (Cuvier, 1831) is a small, freshwater gourami (Fam: Osphronemidae) native to southeast Asia. It was first detected in Florida in the 1970s and seems to have persisted for decades in a small area. In this study, we documented T. vittata’s ecophysiological tolerances (salinity and low-temperature) and qualitatively...

Schofield, Pamela J.; Schulte, Jessica
Schofield, P.J., and Schulte, J.M., 2016, Small but tough: What can ecophysiology of croaking gourami Trichopsis vittatus (Cuvier 1831) tell us about invasiveness of non-native fishes in Florida?: NeoBiota, v. 28, p. 51-65,

Year Published: 2016

Somatic growth dynamics of West Atlantic hawksbill sea turtles: a spatio-temporal perspective

Somatic growth dynamics are an integrated response to environmental conditions. Hawksbill sea turtles (Eretmochelys imbricata) are long-lived, major consumers in coral reef habitats that move over broad geographic areas (hundreds to thousands of kilometers). We evaluated spatio-temporal effects on hawksbill growth dynamics over a 33-yr period and...

Bjorndal, Karen A.; Chaloupka, Milani; Saba, Vincent S.; Diez, Carlos E.; van Dam, Robert P.; Krueger, Barry H.; Horrocks, Julia A.; Santos, Armando J.B.; Bellini, Cláudio; Marcovaldi, Maria A.G.; Nava, Mabel; Willis, Sue; Godley, Brendan J.; Gore, Shannon; Hawkes, Lucy A.; McGowan, Andrew; Witt, Matthew J.; Stringell, Thomas B.; Sanghera, Amdeep; Richardson, Peter B.; Broderick, Annette C.; Phillips, Quinton; Calosso, Marta C.; Claydon, John A.B.; Blumenthal, Janice; Moncada, Felix; Nodarse, Gonzalo; Medina, Yosvani; Dunbar, Stephen G.; Wood, Lawrence D.; Lagueux, Cynthia J.; Campbell, Cathi L.; Meylan, Anne B.; Meylan, Peter A.; Burns Perez, Virginia R.; Coleman, Robin A.; Strindberg, Samantha; Guzmán-H, Vicente; Hart, Kristen M.; Cherkiss, Michael S.; Hillis-Starr, Zandy; Lundgren, Ian; Boulon, Ralf H.; Connett, Stephen; Outerbridge, Mark E.; Bolten, Alan B.
Bjorndal, K.A., Chaloupka, M., Saba, V.S., Diez, C.E., van Dam, R.P., Krueger, B.H., Horrocks, J.A., Santos, A.J.B., Bellini, C., Marcovaldi, M.A.G., Nava, M., Willis, S., Godley, B.J., Gore, S., Hawkes, L.A., McGowan, A., Witt, M.J., Stringell, T.B., Sanghera, A., Richardson, P.B., Broderick, A.C., Phillips, Q., Calosso, M.C., Claydon, J.A.B., Blumenthal, J., Moncada, F., Nodarse, G., Medina, Y., Dunbar, S.G., Wood, L.D., Lagueux, C.J., Campbell, C.L., Meylan, A.B., Meylan, P.A., Burns Perez, V.R., Coleman, R.A., Strindberg, S., Guzmán-H., V., Hart, K.M., Cherkiss, M.S., Hillis-Starr, Z., Lundgren, I.F., Boulon, R.H., Jr., Connett, S., Outerbridge, M.E., and Bolten, A.B., 2016, Somatic growth dynamics of West Atlantic hawksbill sea turtles: a spatio-temporal perspective: Ecosphere, v. 7, no. 5, art. e01279,