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: 5,373
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Year Published: 2019

Enhancing reproductive assessments of the Florida manatee Trichechus manatus latirostris by establishing optimal time period and inhibin B baseline concentrations

The Florida manatee Trichechus manatus latirostris occupies coastal and riverine habitats that may influence the species’ endogenous biological rhythms, including its reproductive potential. Inhibin B provides a biomarker of gonadal function and reproductive potential in humans and other eutherian mammals. This study examined the...

Wetzel, Dana L; Reynolds, John Elliot; Bonde, Robert; Schloesser, Ryan W; Schwierzke-Wade, Leslie; Roudebush, William E

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Year Published: 2019

Urban stormwater: An overlooked pathway of extensive mixed contaminants to surface and groundwaters in the United States

Increasing global reliance on stormwater control measures to reduce discharge to surface water, increase groundwater recharge, and minimize contaminant delivery to receiving waterbodies necessitates improved understanding of stormwater-contaminant profiles. A multi-agency study of organic and inorganic chemicals in urban stormwater from 50 runoff...

Masoner, Jason R.; Kolpin, Dana W.; Cozzarelli, Isabelle M.; Barber, Larry B.; Burden, D.S.; Foreman, William T.; Forshay, Kenneth J.; Furlong, Edward; Groves, Justin F.; Hladik, Michelle; Hopton, Matthew E.; Jaeschke, Jeanne B.; Keefe, Steffanie H.; Krabbenhoft, David; Lowrance , Richard; Romanok, Kristin; Rus, David L.; Selbig, William R.; Williams, Brad; Bradley, Paul

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Year Published: 2019

Continuous stream discharge, salinity, and associated data collected in the lower St. Johns River and its tributaries, Florida, 2017

The U.S. Army Corps of Engineers, Jacksonville District, plans to deepen the St. Johns River channel in Jacksonville, Florida, from 40 to 47 feet along 13 miles of the river channel, beginning at the mouth of the river at the Atlantic Ocean, to accommodate larger, fully loaded cargo vessels. The U.S. Geological Survey, in cooperation with the U.S...

Ryan, Patrick J.
Ryan, P.J., 2019, Continuous stream discharge, salinity, and associated data collected in the lower St. Johns River and its tributaries, Florida, 2017: U.S. Geological Survey Open-File Report 2019–1078, 35 p., https://doi.org/10.3133/ofr20191078.

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Year Published: 2019

Incorporating uncertainty and risk into decision making to reduce nitrogen inputs to impaired waters

This article aims to understand decision making under uncertainty and risk, with a case study on Cape Cod, Massachusetts. Decision makers need to consider imperfect information on the cost and effectiveness of advanced nitrogen-removing on-site wastewater treatment systems as options to mitigate water quality degradation. Research included...

Martin, David M.; Johnson, Fred

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Year Published: 2019

Air pollution and respiratory hospital admissions in Shiraz, Iran, 2009 to 2015

Air pollution has been identified as one of the most challenging health issues in urban areas worldwide.The aim of this study was to investigate the association between short-term exposure to ambient air pollution and respiratory disease over a long-term period in Shiraz, one of the largest cities in Iran. Methods: hospital admissions...

Soleimani, Zahra; Darvishi Boloorani, Ali; Reza Khalifeh; Teymouri, Pari; Mesdaghinia, Alireza; Griffin, Dale W.

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Year Published: 2019

Predicting surf zone injuries along the Delaware coast using a Bayesian network

Personnel at Beebe Healthcare in Lewes, Delaware, collected surf zone injury (SZI) data for eight summer seasons from 2010 through 2017. Data include, but are not limited to, time of injury, gender, age, and activity. More than 2000 SZI events, including 196 spinal injuries and 6 fatalities, occurred at the five most populated beaches along the 25...

Doelp, Matthew; Puleo, Jack A.; Plant, Nathaniel G.

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Year Published: 2019

Airborne bacteria in Earth's lower stratosphere resemble taxa detected in the troposphere: Results from a new NASA Aircraft Bioaerosol Collector (ABC)

Airborne microorganisms in the upper troposphere and lower stratosphere remain elusive due to a lack of reliable sample collection systems. To address this problem, we designed, installed, and flight-validated a novel Aircraft Bioaerosol Collector (ABC) for NASA's C-20A that can make collections for microbiological research investigations up to...

David J. Smith; Ravichandar, Jayamary D.; Jain, Sunit; Griffin, Dale W.; Yu, Hongbin; Tan, Qian; Thissen, James; Lusby, Terry; Nicoll, Patrick; Shedler, Sarah; Martinez, P.; Osorio, Alejandro; Lechniak, Jason; Choi, Samuel; Sabino, Kayleen; Iverson, Kathryn; Chan, Luisa; Jaing, Crystal; McGrath, John

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Year Published: 2019

A generically parameterized model of lake eutrophication (GPLake) that links field-, lab- and model-based knowledge

Worldwide, eutrophication is threatening lake ecosystems. To support lake management numerous eutrophication models have been developed. Diverse research questions in a wide range of lake ecosystems are addressed by these models. The established models are based on three key approaches: the empirical approach that employs field surveys, the...

Chang, Manqi; Teurlincx, Sven; DeAngelis, Donald L.; Janse, Jan H.; Troost, Tineke A.; van Wijk, Dianneke; Mooij, Wolf M.; Janssen, Annette B. G.

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Year Published: 2019

Immediate effects of hurricanes on a diverse coral/mangrove ecosystem in the U.S. Virgin Islands and the potential for recovery

Hurricanes Irma and Maria, two powerful storms that hit the U.S. Virgin Islands less than 2 weeks apart in September 2017, caused extensive damage to the natural resources on St. John. Damage was particularly severe in a unique mangrove/coral ecosystem in three bays within Virgin Islands Coral Reef National Monument, a National Park Service marine...

Rogers, Caroline

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Year Published: 2019

Patterns of resource allocation in a coastal marsh plant (Schoenoplectus americanus) along a sediment-addition gradient

Reductions in sediment delivery to coastal marshes increase their vulnerability to relative sea-level rise. Sediment pulses from storm events and commercial dredge-spray operations (e.g., beneficial use) represent increasingly important sediment sources to otherwise sediment-deprived marshes. These sediments can stimulate plant growth by providing...

Temple, Nigel A.; Grace, James B.; Cherry, Julia A

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Year Published: 2019

Life history, genetics, range expansion and new frontiers of the lionfish (Pterois volitans, Perciformes: Pteroidae) in Latin America

Pterois volitans (lionfish) is a midsize predatory fish commonly found in waters of the western Pacific and Indian Ocean. The species was first documented in Dania Beach, Florida (northwestern Caribbean) in 1985. Since that time the species has expanded its range rapidly to the Northwestern Atlantic Ocean, Gulf of Mexico, and Caribbean Sea....

Díaz-Ferguson, Edgardo; Hunter, Margaret

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Year Published: 2019

Mapping crop residue by combining Landsat and WorldView-3 satellite imagery

A unique, multi-tiered approach was applied to map crop-residue cover on the Eastern Shore of the Chesapeake Bay, USA. Field measurements of crop-residue cover were used to calibrate residue mapping using shortwave infrared (SWIR) indices derived from WorldView-3 imagery for an 8-km x 8-km footprint. The resulting map was then used to calibrate...

Hively, W. Dean; Shermeyer, Jacob; Lamb, Brian T.; Daughtry, Craig S.T.; Quemada, Miguel; Keppler, Jason

Filter Total Items: 498
View of river from webcam

Savannah River at Savannah (021989773)

We have installed a webcam at the Savannah River at Savannah to allow you to view, in real time, the current river-stage conditions.

During periods of flooding, the South Atlantic Water Science Center - Georgia will take control of the camera.

Camera is sponsored by the USGS National Streamflow Information Program (

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Image: Yellow Anaconda Captured at Big Cypress National Preserve in Florida

Yellow Anaconda Captured at Big Cypress National Preserve in Florida

Yellow anaconda (Eunectes notaeus) specimen captured at Big Cypress National Preserve. Photo courtesy of Skip Snow, National Park Service.

Image: Collection Of Sediment And Water Sampling Prior To The Possible Occurrence Of Oil Contamination From The Deepwater Horizon Oil Well At Egmont Key, Florida

Collection Of Sediment And Water Sampling Prior To The Possible Occurrence Of Oil Contamination From The Deepwater Horizon Oil Well At Egmont Key, Florida

Bruce Bernard (left) and Scott McBride (right) obtain water and sediment samples at Egmont Key which is about 1 mile west of the mouth of Tampa Bay in the Gulf of Mexico. Samples were collected June 14, 2010 prior to the possible occurrence of oil contamination from the Deepwater Horizon's oil well.

Image: A Burmese Python and an Alligator Encounter in South Florida

A Burmese Python and an Alligator Encounter in South Florida

A Burmese python (Python molurus) peeks over the head of an alligator that holds the python's body in its mouth in Everglades National Park. Photo courtesy of Lori Oberhofer, National Park Service.

Image: Flat Cays, U.S. Virgin Islands Coral Reef

Flat Cays, U.S. Virgin Islands Coral Reef

Shallow coral reefs in the U.S. Virgin Islands are in jeopardy due to climate warming and ocean acidification.

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