Scientists at the USGS St. Petersburg Coastal and Marine Science Center study coral reef ecosystems. This coral, Orbicella annularis, was photographed in the Florida Keys during field work on coral disease.
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Coral, Orbicella annularis, in the Florida Keys
Scientists at the USGS St. Petersburg Coastal and Marine Science Center study coral reef ecosystems. This coral, Orbicella annularis, was photographed in the Florida Keys during field work on coral disease.
Low-density Waterfowl in California Wetlands
Waterfowl in California can spread the avian influenza virus (AIv) during summertime when wetland temperatures are warm and waterfowl densities are low.
Waterfowl in California can spread the avian influenza virus (AIv) during summertime when wetland temperatures are warm and waterfowl densities are low.
Low-density Waterfowl in California Wetlands
Waterfowl in California can spread the avian influenza virus (AIv) during summertime when wetland temperatures are warm and waterfowl densities are low.
Waterfowl in California can spread the avian influenza virus (AIv) during summertime when wetland temperatures are warm and waterfowl densities are low.
Canyonlands National Park
Aerial view of the study area in Canyonlands National Park.
Aerial view of the study area in Canyonlands National Park.
Forster's Tern Chick With Two Eggs
A Forster's tern chick next to eggs near San Francisco Bay.
A Forster's tern chick next to eggs near San Francisco Bay.
Forster's Tern Chick With Eggs
A Forster's tern chick with eggs near San Francisco Bay.
A Forster's tern chick with eggs near San Francisco Bay.
Forster's Tern Chick With Egg
A Forster's tern chick near an egg near San Francisco Bay.
A Forster's tern chick near an egg near San Francisco Bay.
Sampling Fish
Scientist sampling fish at Lake Mead.
Scientist sampling fish at Lake Mead.
WRP St. Landry Parish, Louisiana
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.
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.
Brewer's Sparrow Close Up
Side view of Brewer's sparrow (Spizella breweri) in USGS field worker's hand.
Side view of Brewer's sparrow (Spizella breweri) in USGS field worker's hand.
Brewer's Sparrow Back
Back view of Brewer's sparrow (Spizella breweri) in USGS field worker's hand.
Back view of Brewer's sparrow (Spizella breweri) in USGS field worker's hand.
Brewer's Sparrow Wing
Brewer's sparrow (Spizella breweri) wing spread close up.
Brewer's sparrow (Spizella breweri) wing spread close up.
Radio-Tagged Walrus
USGS scientists can follow radio-tagged walruses remotely as they move around the Arctic Basin.
USGS scientists can follow radio-tagged walruses remotely as they move around the Arctic Basin.
Brewer's Sparrow Nest
Two Brewer's sparrow (Spizella breweri) chicks and one egg in nest, Steens Mountain, SE Oregon.
Two Brewer's sparrow (Spizella breweri) chicks and one egg in nest, Steens Mountain, SE Oregon.
Brewer's Sparrow Nest
Two Brewer's sparrow (Spizella breweri) chicks and one egg in nest, Steens Mountain, SE Oregon.
Two Brewer's sparrow (Spizella breweri) chicks and one egg in nest, Steens Mountain, SE Oregon.
Walruses in Chukchi Sea
Walruses resting on an ice floe in the Chukchi sea.
Walruses resting on an ice floe in the Chukchi sea.
Scientists in Chukchi Sea
Scientists travel to the Chukchi and Bering seas to radio-tag walruses.
Scientists travel to the Chukchi and Bering seas to radio-tag walruses.
Walruses in Chukchi Sea
Walruses resting on an ice floe in the Chukchi sea.
Walruses resting on an ice floe in the Chukchi sea.
Aspen regeneration after stand-replacing fire
Aspen regeneration after stand-replacing fire in a seral aspen-conifer stand in the Jarbidge Mountains, Nevada
Aspen regeneration after stand-replacing fire in a seral aspen-conifer stand in the Jarbidge Mountains, Nevada
Upper Mississippi River, Pool 7
This is an aerial view looking south from above Pool 7 of the Upper Mississippi River near Trempealeau, WI. The navigation dam which creates the pool appears slightly below the horizon in the upper left quadrant. Wing dams are evidenced by the rippling water in the river channel as they direct the flow toward the main channel. The complex backwater
This is an aerial view looking south from above Pool 7 of the Upper Mississippi River near Trempealeau, WI. The navigation dam which creates the pool appears slightly below the horizon in the upper left quadrant. Wing dams are evidenced by the rippling water in the river channel as they direct the flow toward the main channel. The complex backwater
From Bluff to Backwater
This is an aerial view of Pool 7 of the Mississippi River south of Trempealeau, WI. This photo highlights the different habitats for plants and wildlife from the bluffs that parallel the river to its quiet backwaters. Balanced with that is the fact that the Mississippi River is a commercial highway as well as a haven for recreational uses.
This is an aerial view of Pool 7 of the Mississippi River south of Trempealeau, WI. This photo highlights the different habitats for plants and wildlife from the bluffs that parallel the river to its quiet backwaters. Balanced with that is the fact that the Mississippi River is a commercial highway as well as a haven for recreational uses.