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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
Predicting Vulnerability of Southeastern Sea Turtle Nesting Beaches to Climate Change
Date Published: February 26, 2016

Predicting Vulnerability of Southeastern Sea Turtle Nesting Beaches to Climate Change

Climate change may reduce the suitability of nesting and foraging habitat used by federally threatened and endangered species, like the Loggerhead sea turtle.

Spatial Ecology of the American Crocodile and American Alligator in the Greater Everglades
Date Published: February 26, 2016
Status: Active

Spatial Ecology of the American Crocodile (Crocodylus acutus) and American Alligator (Alligator mississippiensis) in the Greater Everglades

Satellite/GPS tags help USGS researchers understand the movements of American Alligators and American Crocodiles in the Greater Everglades.

Bartram’s hairstreak butterfly - WARC
Date Published: February 25, 2016
Status: Completed

Mosquito Control Pesticide Impacts to Butterflies: Implications for Imperiled Butterfly Conservation on a National Wildlife Refuge

USGS researchers evaluate the impact of a pesticide on two imperiled butterfly species in the Florida Keys.

Mosquitofish (Gambusia holbrooki) in Tanks - WARC
Date Published: February 25, 2016

Methylmercury Impacts to Reproduction in the Eastern Mosquitofish (Gambusia holbrooki)

USGS researchers investigate the effects of methylmercury contamination on reproduction of the Eastern mosquitofish, a common fish in South Florida.

Frosted flatwoods salamander
Date Published: February 2, 2016
Status: Active

Adaptive Habitat Conservation for Flatwoods Salamanders

USGS scientists investigate adaptive habitat conservation for Flatwoods salamanders.

Grass Carp, Ctenopharyngodon idella
Date Published: November 3, 2015
Status: Completed

Fish Slam 2015

November 3, 2015 – Five teams of fishery biologists from the U.S. Geological Survey (USGS), U.S. Fish and Wildlife Service (USFWS), Florida Fish and Wildlife Conservation Commission (FWC), the National Park Service (NPS), and Florida International University (FIU) sampled for non-native fishes in canals, ponds and ditches in and around the Plantation/Davie area of Broward County, FL.

Roughtongue Reef Map
Date Published: September 1, 2015

Natural Resource Disaster Assessment (NRDA): Mesophotic Reef Investigations Post-DWH Event

A series of ROV cruises was proposed to survey selected reefs for fish and soft coral diversity.

Evaluating the Prevalence of the Amphibian Chytrid Fungus, Batrachochytrium dendrobatidis, in the Southeastern U.S.: Any Evidenc
Date Published: April 17, 2015

Evaluating the Prevalence of the Amphibian Chytrid Fungus, Batrachochytrium dendrobatidis, in the Southeastern U.S.: Any Evidence of Disease-Related Population Declines?

Pathogens and infectious disease play a role in some recent species extinctions and are likely to impact biodiversity in the future. Environmental DNA - eDNA - is coupled with traditional amphibian sampling methods to determine the distribution and prevalence of the amphibian chytrid fungus, also known as Bd, in the southeastern US. 

A Decision Support Tool for Repatriation of Aquatic Fauna: A Case Study Involving the Striped Newt (Notophthalmus perstriatus) a
Date Published: April 17, 2015
Status: Completed

A Decision Support Tool for Repatriation of Aquatic Fauna: A Case Study Involving the Striped Newt (Notophthalmus perstriatus) at St. Marks National Wildlife Refuge, Florida

The Striped Newt is a small salamander found in xeric habitats (e.g., scrub, sandhill, dry flatwoods) of the lower coastal plain and northern peninsular Florida. Though once considered "common," they are currently a candidate species for federal listing. 

Typical habitats sampled during the Fish Slam
Date Published: November 14, 2014
Status: Completed

Fish Slam 2014

On November 20, 2014, eight teams of fishery biologists from the U.S. Geological Survey (USGS), U.S. Fish and Wildlife Service (USFWS), Florida Fish and Wildlife Conservation Commission (FWC), U.S. National Park Service (NPS), and Florida International University (FIU) gathered for a one-day sampling event to collect non-native fishes from canals, ponds and ditches in Miami-Dade County, FL....

Mobile River Basin Chart
Date Published: September 22, 2014
Status: Active

Mobile River Basin Study Design

The Mobile River Basin study is one of several NAWQA studies that began in Federal fiscal year 1997 (October 1996). Study planning and design, and analysis of existing data will be done during the first 2 years, which is consistent with all NAWQA studies. After the 2-year planning period, surface- and ground-water and biological data will be collected intensively for 3 years during a high-...

Bobwhite Quail
Date Published: May 6, 2014

Adaptive Management for the Northern Bobwhite on the Babcock-Webb Wildlife Management Area

Based on field research conducted during 2002-2009, the bobwhite population on the Babcock-Webb Wildlife Management Area (WMA) in Southwest Florida is incapable of supporting desired levels of sport harvest.

Filter Total Items: 172
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Year Published: 2002

Effects of wastewater on forested wetlands

Cycling nutrient-enriched wastewater from holding ponds through natural, forested wetlands is a practice that municipal waste treatment managers are considering as a viable option for disposing of wastewater. In this wastewater cycling process, sewer effluent that has been circulated through aerated ponds is discharged into neighboring wetland...

Doyle, Thomas W.
Effects of Wastewater on Forested Wetlands; 2002; FS; 104-02; Doyle, Thomas W.

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Year Published: 2002

History and ecology of mangroves in the Dry Tortugas

Dry Tortugas National Park, which includes Bush, Long, Loggerhead, Garden, and Bird Keys, is a cluster of islands and coral reefs approximately 112.9 km (70 miles) west of Key West, Florida (fig. 1). These islands were explored in 1513 by Ponce de León, who named them for the abundance of sea turtles, “tortugas,” and the lack of...

Doyle, T.W.; Michot, T.C.; Day, Richard H.; Wells, C.J.

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Year Published: 2001

Linkages between the snail kite population and wetland dynamics in a highly fragmented South Florida landscape: Chapter 6

No abstract available.

Porter, James; Porter, Karen G.; Kitchens, Wiley M.; Bennetts, Robert E.; DeAngelis, Donald L.

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Year Published: 1994

Mangroves, hurricanes, and lightning strikes: Assessment of Hurricane Andrew suggests an interaction across two differing scales of disturbance

The track of Hurricane Andrew carried it across one of the most extensive mangrove for ests in the New World. Although it is well known that hurricanes affect mangrove forests, surprisingly little quantitative information exists concerning hurricane impact on forest structure, succession, species composition, and dynamics of mangrove-dependent...

Smith, Thomas J.; Robblee, Michael B.; Wanless, Harold R.; Doyle, Thomas W.