Wetland and Aquatic Research Center
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This black-bellied salamander (Desmognathus quadramaculatus) was found in the Citico Creek Wilderness, Cherokee National Forest, Tennessee.
A queen angelfish peers through the safety of the mangrove roots across the rich colors and textures of corals, sponges, urchins, and algae. Queen angelfish feed almost exclusively on sponges, which are abundant in these mangroves.
USGS researcher collects data on manatee in Florida spring.
Brown Marsh observed in southeastern Terrebonne Basin, La
Manatee swims in a Florida spring
Two manatees with radio transmitters attached
To understand how changes in rainfall and temperature might affect coastal wetlands in the northern Gulf of Mexico, USGS researchers conducted field studies at 10 estuaries in five states (Texas, Louisiana, Mississippi, Alabama, and Florida). The fieldwork took place in a variety of coastal wetland types, including mangroves, marshes, and salt flats.
For nearly four decades, the U.S. Geological Survey's Sirenia Project has been committed to understanding the biology and ecology of the West Indian manatee to aid managers in actions that could best help the population. To do this, USGS manatee researchers rely on a variety of tools and techniques.
A lionfish floating in blue water. Photo: Richard Whitcombe. (Permission provided by photographer)
Blue Shiner, Cyprinella caerulea
A great blue heron standing in the marsh at Merritt Island National Wildlife Refuge near the Kennedy Space Center.
Red mangrove trees fringe the shoreline of a bay in Hurricane Hole, U.S. Virgin Islands.
Wetlands Reserve Program site in Morehouse Parish, Louisiana. Green tree frogs rest on a Wetlands Reserve Program easement boundary sign in Morehouse Parish, Louisiana.
Live Lophelia pertusa is white because the calcium carbonate skeleton shows through the nonpigmented coral tissue. Dead coral is soon covered in a brown biofilm. The red-orange squat lobster (Eumunida picta) in the center of the photo is prepared to catch its dinner.
Wetlands Reserve Program site in Natchitoches Parish, Louisiana. Ten years ago, this landowner worked with the USDA Natural Resources Conservation Service through the Wetlands Reserve Program to design and construct this slough as part of a plan to restore this field’s natural wetland hydrology.
Wetlands Reserve Program site in St. Landry Parish, Louisiana. Changes in a local river resulted in the landowner’s fields flooding on a regular basis. The landowner worked through the USDA Natural Resources Conservation Service to restore his fields to their natural wetland state.
A laboratory preparation of a Oaxaca Cave Sleeper specimen shows the absence of eyes in this newly identified cavefish species. Credit: Stephen J. Walsh, USGS
This Oaxaca Cave Sleeper is one of thirteen specimens collected from a cave beneath a reservoir on Mexico's Tonto River. It lacks eyes, is unpigmented, and has sensory adaptations characteristic of fish that live in total darkness. Thuis is the holotype, the example used to describe and name this newly identified species. Credit: Howard L. Jelks and Stephen J. Walsh, USGS
The pike killifish, native to Mexico and Central America, was one of 13 nonnative fish species that biologists discovered during the two-day Fish Slam in Big Cypress National Preserve, March 22 and 23, 2017.