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: 5,167
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Year Published: 2019

A review of machine learning applications to coastal sediment transport and morphodynamics

A range of computer science methods under the heading of machine learning (ML) enables the extraction of insight and quantitative relationships from multidimensional datasets. Here, we review some common ML methods and their application to studies of coastal morphodynamics and sediment transport. We examine aspects of ‘what’ and ‘why’ ML methods...

Goldstein, Evan ; Coco, Giovanni ; Plant, Nathaniel G.

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Year Published: 2019

Quantifying risk of whale–vessel collisions across space, time, and management policies

Transportation industries can negatively impact wildlife populations, including through increased risk of mortality. To mitigate this risk successfully, managers and conservationists must estimate risk across space, time, and alternative management policies. Evaluating this risk at fine spatial and temporal scales can be challenging, especially in...

Crum, Nathan J.; Gowan, Timothy A.; Krzystan, Andrea; Martin, Julien

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Year Published: 2019

Examination of Bathymodiolus childressi nutritional sources, isotopic niches, and food-web linkages at two seeps in the US Atlantic margin using stable isotope analysis and mixing models

Chemosynthetic environments support distinct benthic communities capable of utilizing reduced chemical compounds for nutrition. Hundreds of methane seeps have been documented along the U.S. Atlantic margin (USAM), and detailed investigations at a few seeps have revealed distinct environments containing mussels, ...

Demopoulos, Amanda; McClain Counts, Jennifer; Bourque, Jill; Prouty, Nancy; Smith, Brian; Brooke, Sandra; Ross, Steve W.; Ruppel, Carolyn

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Year Published: 2019

Monitoring storm tide and flooding from Hurricane Irma along the U.S. Virgin Islands, Puerto Rico, and the Southeastern United States, September 2017

Hurricane Irma skirted the northern coasts of the U.S. Virgin Islands and Puerto Rico, with maximum sustained winds of 185 miles per hour (mi/h) on September 6, 2017. The hurricane first made landfall in Florida near Cudjoe Key, in the lower Florida Keys, with maximum sustained winds of 130 mi/h on September 10, 2017. The hurricane made a second...

Byrne, Michael J.; Dickman, Mark R.
Byrne, M.J., Sr., and Dickman, M.R., 2019, Monitoring storm tide and flooding from Hurricane Irma along the U.S. Virgin Islands, Puerto Rico, and the Southeastern United States, September 2017 (ver. 1.1, July 2019): U.S. Geological Survey Open-File Report 2019–1013, 35 p., https://doi.org/10.3133/ofr20191013.

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Year Published: 2019

The effects of geography, habitat, and humans on the ecology and demography of the Gopher tortoise (Gopherus polyphemus) in the southern Lake Wales Ridge region of Florida

A 35-year (1967–2002) demographic study was conducted on the gopher tortoise (Gopherus polyphemus) from two different habitats on Archbold Biological Station located on the southern end of the Lake Wales Ridge in south-central Florida. We found geographic, habitat, and human-mediated effects on several aspects of its biology. Our findings...

Meshaka, Walter E.; Layne, James N.; Rice, Kenneth G.

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Year Published: 2019

The circumtropical swarm population of the longspined porcupinefish (Diodon holocanthus Linnaeus)

Evidence is presented that Diodon holocanthus is a circumtropical swarm (not a hybrid swarm because the individuals are not hybrids). Some individuals are so differentfrom one another in both color and morphology that they appear to be different species. Thirty undersea and aquarium photographs from different global localities are...

Randall, John E; Rogers, Caroline; Ogden, John C

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Year Published: 2019

Advancing barrier island habitat mapping using landscape position information

Barrier islands are dynamic ecosystems that change gradually from coastal processes, including currents and tides, and rapidly from episodic events, such as storms. These islands provide many important ecosystem services, including storm protection and erosion control to the mainland, habitat for fish and wildlife, and tourism. Habitat maps,...

Enwright, Nicholas; Wang, Lei; Borchert, Sinéad M.; Day, Richard; Feher, Laura; Osland, Michael
.

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Year Published: 2019

Environmental DNA sampling reveals high occupancy rates of invasive Burmese pythons at wading bird breeding aggregations in the central Everglades

The Burmese python (Python bivittatus) is now established as a breeding population throughout south Florida, USA. However, the extent of the invasion, and the ecological impacts of this novel apex predator on animal communities are incompletely known, in large part because Burmese pythons (hereafter “pythons”) are extremely cryptic and there has...

Orzechowski, Sophia C. M.; Frederick, Peter C.; Dorazio, Robert M.; Hunter, Margaret

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Year Published: 2019

Regional protocol framework for the inventory and monitoring of breeding Atlantic Coast Piping Plovers

This regional protocol provides a framework for quantifying the number of breeding pairs and productivity of Atlantic Coast piping plover (Charadrius melodus) populations during the breeding season. A primary purpose of this protocol is to standardize piping plover monitoring during the breeding season. The survey techniques...

King, Erin; Katz, Rachel A.; Iaquinto, Kate E.; Suir, Kevin J.; Baldwin, M.J.; Hecht, A.

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Year Published: 2019

Quantifying hydrologic alteration in an area lacking current reference conditions—The Mississippi Alluvial Plain of the South-Central U.S.

To better understand the effects of hydrologic alteration as they relate to human and biological needs within the Mississippi Alluvial Plain of the south-central United States, the quantification of hydrologic alteration is required. Quantifying hydrologic alteration in the Mississippi Alluvial Plain is particularly difficult because of the lack...

Hart, Rheannon M.; Brian Breaker

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Year Published: 2019

Potential sea level rise for the Chitimacha Tribe of Louisiana

Situated in the Mississippi Alluvial Plain of the Gulf Coast Prairie Landscape Conservation Cooperative (GCP LCC), the Chitimacha Tribe is one of four federally recognized tribes in Louisiana. The Tribal seat, trust lands/ reservation, and adjacent Tribal owned lands are located near Charenton, Louisiana, totaling nearly 1,000 acres. The...

Spear, Kathryn A.; Jones, William; Griffith, Kereen; Tirpak, Blair E.; Walden, Kimberly
Spear, K.A., Jones, W., Griffith, K., Tirpak, B.E., and Walden, K., 2019, Potential sea level rise on Chitimacha Tribal Lands in Louisiana: U.S. Geological Survey Open-File Report 2019–1030, 1 sheet, https://doi.org/10.3133/ofr20191030.

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Year Published: 2019

Restoration affects sexual reproductive capacity in a salt marsh

Plant sexual reproduction is an important driver of plant community maintenance, dispersal, and recovery from disturbance. Despite this, sexual reproduction in habitats dominated by clonally spreading perennial species, such as salt marshes, is often ignored. Communities dominated by long-lived perennial species can still depend on sexual...

Jones, Scott F; Yando, Erik S.; Stagg, Camille; Hall, Courtney T.; Hester, Mark W.

Filter Total Items: 498
Tadpole with SPI
December 19, 2002

Tadpole with SPI

This tadpole shows signs of a severe Perkinsea infection. 

Tadpole with organ failure
December 19, 2002

Tadpole with organ failure

This tadpole shows signs of severe Perkinsea infection, which causes organ failure. 

Image: Lindbergh Beach, U.S. Virgin Islands
May 31, 2002

Lindbergh Beach, U.S. Virgin Islands

A view toward the ocean, featuring a white sand beach, the ocean, and a Seagrape tree partially blocking a palm tree.

Image: Florida Bay
December 13, 1999

Florida Bay

Looking south from the Black Betsy Keys shore, onto waters of Florida Bay. On the horizon, Key islands separate the green bay waters from the blue cloud-filled skies.

Image: Florida Bay sunset
December 11, 1999

Florida Bay sunset

The sky filled with a profusion of colors as the sun slowly set behind this mangrove island in Florida Bay, at the south end of Everglades National Park.

View looking up-stream toward Carraizo Dam, under drought conditions, 1994
December 31, 1994

View looking up-stream toward Carraizo Dam, under drought conditions

View looking up-stream toward Carraizo Dam in Loiza, Puerto Rico, under drought conditions.

Image: Winter Park Florida Sinkhole of 1981
May 10, 1981

Winter Park Florida Sinkhole of 1981

Photo 15 of 15: Water level in sinkhole chimney stabilized since the previous day. View to south across the sinhole. In the following weeks and months, the water level in the sinkhole continued to rise, a likely result of the plugging of the conduit into the Floridan aquifer with the sinkhole debris, fill subsequently emplaced by the city, and natural consolidation

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Image: Winter Park Florida Sinkhole of 1981
May 9, 1981

Winter Park Florida Sinkhole of 1981

Photo 14 of 15: Remnants of community pool in sinkhole. View to east across the sinkhole.

Image: Winter Park Florida Sinkhole of 1981
May 9, 1981

Winter Park Florida Sinkhole of 1981

This collection is a group of 15 images (digitized slides) showing the sinkhole that opened late in the evening of May 8, 1981 near the intersection of South Denning Drive and West Fairbanks Avenue, Winter Park, Florida, USA. The sequence of images, primarily taken on May 9th, shows the enlargement of the sinkhole which completely swallowed a house and undermined an

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Image: Winter Park Florida Sinkhole of 1981
May 9, 1981

Winter Park Florida Sinkhole of 1981

Photo 2 of 15: Cars and house in a sinkhole. Auto mechanic’s garage intact. View to south across the sinkhole.

Filter Total Items: 394
USGS
September 12, 1997

Federal and local biologists captured and tagged three manatees in early August near Mayaguez, Puerto Rico, as part of efforts to better protect West Indian manatees inhabiting this Caribbean island.

USGS
September 2, 1997

Scientists explored a unique reef in the Florida Keys National Marine Sanctuary.

USGS
August 20, 1997

Managers and planners representing Federal, state, and local government agencies and private organizations will gather in Fort Lauderdale on Monday for a 3-day conference (August 25 - 27) to discuss the latest results of more than 50 scientific investigations by the U.S. Geological Survey in South Florida.

USGS
July 30, 1997

An earthquake with a preliminary magnitude of 3.8 occurred in northeastern Tennessee, Wednesday, July 30, 1997 according to the U.S. Geological Survey.

USGS
November 21, 1996

The gasoline additive MTBE (methyl tert-butyl ether) was detected in some urban stormwater samples collected in 16 cities and metropolitan areas by the U.S. Geological Survey, but all detections of MTBE were less than the lower limit of the U.S. Environmental Protection Agency’s draft lifetime health advisory for drinking water.

USGS
September 11, 1996

The especially wet Hurricane Hortense has U.S. Geological Survey hydrologists and technicians working around the clock to measure its impact on the rivers of Puerto Rico. The Rio de la Plata in northeastern Puerto Rico, for example, has reached its highest level ever, exceeding the previous record high flow of Jan. 5, 1992, when the river reached a flow of 82 billion gallons per day.

USGS
September 5, 1996

From coastal erosion to measuring the storm surge and flooding as well as providing maps of affected areas, the U.S. Geological Survey is gearing up to provide information on Hurricane Fran as the storm develops, including real-time data, from its offices in Florida, Georgia, South Carolina, North Carolina, Virginia, Maryland, Delaware, Pennsylvania, New Jersey and New York.

USGS
November 21, 1995

The most important ground-water problems in the states of Illinois, Indiana, Ohio, Kentucky and Tennessee are probably high concentrations of dissolved solids and large water-level declines near wells that pump large amounts of water from the aquifers (underground water-bearing rock layers), according to a new report by the U.S. Geological Survey.

USGS
September 15, 1995

As the U.S. Geological Survey continues to monitor declining streamflows throughout the Northeastern U.S., the Delaware River Basin Commission has issued a drought warning today (Fri., Sept. 15), in the Delaware River basin, limiting reservoir withdrawals and calling for the use of voluntary water conservation measures.

USGS
August 22, 1995

A new satellite image map of south Florida that will aid resource managers planning a $2-3 billion restoration effort in the Everglades and Florida Bay will be presented to the Governor’s office Wednesday (August 23, 1995).

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