Wetland and Aquatic Research Center
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Can you hear the difference between the non-native Cuban treefrog and two common Louisiana native treefrogs? Cuban treefrogs’ call is distinctive. Biologist Paul Moler of the Florida Fish and Wildlife Conservation Commission recorded them in South Florida. Credit: Paul Moler, used with permission.
Squirrel treefrogs are also native to Florida and Louisiana. Hear them calling from ditches, puddles and other ephemeral pools of water. Credit: Paul Moler, used with permission.
USGS scientists Daniel Catizone (left) and David Seay (center) joined federal and state workers and volunteers in rescuing an estimated 1,000 cold-stunned sea turtles, making this the second largest sea turtle rescue of the 21st century. Photo by Margaret Lamont, USGS
USGS scientist Margaret Lamont measures a Kemp’s ridley sea turtle recovered from the cold waters of St. Joseph Bay. Rescued sea turtles are weighed, measured andmarked with an identifier, and are examined to determine if they need medical attention. Photo by USGS.
Eglin Air Force Base biologist Kathy Gault (left) and Dave Seay (right), a contract biologist working with the USGS, hauled cold-stunned sea turtles to safety along the icy shore of Cape San Blas. Scientists and licensed volunteers walked the beaches and marshes, loading cold-stunned sea turtles into kayaks. Once full, kayaks could weigh more than 400 pounds and had to be dragged two to three...
When water temperatures drop below 50 degrees Fahrenheit (10 degrees Celsius), cold-blooded sea turtles, like this Kemp’s ridley, can become cold-stunned. They are unable to swim or even raise their heads out of the water to breathe, which can lead to drowning. Photo by Margaret Lamont, USGS
It looks like a holiday ornament, but this lovely object is a single-celled freshwater alga from the desmid family, found in the marshes of Florida’s Arthur R. Marshall Loxahatchee National Wildlife Refuge. USGS biologist Barry Rosen photographed it at 200x magnification using ultraviolent light and a fluorescence microscope. Desmids range in size from under 10 microns—approximately the width...
Graph of land area change rate in coastal Louisiana from 1932–2016. The red line approximates the long-term land area change rate. 95 out of 100 statistical analyses would produce a very similar trend (dotted blue lines). Credit: USGS