Wetland and Aquatic Research Center
Invasive Cuban Treefrogs Establish First Known Population in Louisiana
A population of the invasive treefrogs has been discovered in New Orleans, more than 430 miles from the nearest known population in Florida.Read more
New Genetic Test Detects Manatees' Recent Presence in Waterways
WARC scientists have developed the first lab test that can pick up traces of manatees' genetic material in fresh or saltwaterLearn more
WARC conducts relevant and objective research, develops new approaches and technologies, and disseminates scientific information needed to understand, manage, conserve, and restore wetlands and other aquatic and coastal ecosystems and their associated plant and animal communities throughout the nation and the world.
Wade into USGS WARC's wetland and aquatic science!Learn More
Sea turtles, pythons, & manatees, oh my: USGS science in FloridaLearn more
U.S. Geological Survey scientists have been honored as Recovery Champions by the U.S. Fish and Wildlife Service's Southeast Region for their long-term research efforts on the Florida manatee.
No one has a crystal ball to foresee what will happen during the 2018 hurricane season that begins June 1, but NOAA forecasters say there’s a 75 percent chance this hurricane season will be at least as busy as a normal year, or busier.
A population of exotic invasive Cuban treefrogs has been discovered in New Orleans, more than 430 miles (700 kilometers) from the nearest known population in Florida, making this the first known breeding population in the mainland United States outside that state, reports a new study by the U.S. Geological Survey.
Scroll down to hear and download calls of Cuban treefrogs and two native treefrogs.
Dynamic minimum set problem for reserve design: Heuristic solutions for large problems
Conversion of wild habitats to human dominated landscape is a major cause of biodiversity loss. An approach to mitigate the impact of habitat loss consists of designating reserves where habitat is preserved and managed. Determining the most valuable areas to preserve in a landscape is called the reserve design problem. There exists several...Bonneau, Mathieu; Sabbadin, Regis; Johnson, Fred A.; Stith, Bradley
Value of sample information in dynamic, structurally uncertain resource systems
Few if any natural resource systems are completely understood and fully observed. Instead, there almost always is uncertainty about the way a system works and its status at any given time, which can limit effective management. A natural approach to uncertainty is to allocate time and effort to the collection of additional data, on the reasonable...Williams, Byron K.; Johnson, Fred A.
A semi-arid river in distress: Contributing factors and recovery solutions for three imperiled freshwater mussels (Family Unionidae) endemic to the Rio Grande basin in North America
Freshwater resources in arid and semi-arid regions are in extreme demand, which creates conflicts between needs of humans and aquatic ecosystems. The Rio Grande basin in the southwestern United States and northern Mexico exemplifies this issue, as much of its aquatic biodiversity is in peril as a result of human activities. Unionid mussels have...Randklev, Charles R.; Miller, Tom; Hart, Michael; Morton, Jennifer; Johnson, Nathan A.; Skow, Kevin; Inoue, Kentaro; Tsakiris, Eric; Oetker, Susan; Smith, Ryan; Robertson, Clint; Lopez, Roel