Grand Canyon sunset from South Rim taken during USGS field work, April 2013.
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Grand Canyon sunset from South Rim
Grand Canyon sunset from South Rim taken during USGS field work, April 2013.
USGS and USFS scientists installing dust collectors at the Pinyon Plain uranium mine.
USGS and USFS scientists installing dust collectors at the Pinyon Plain uranium mine.USGS and USFS scientists installing dust collectors at the Pinyon Plain uranium mine. Photo: Mike Duniway. 4/9/2013.
USGS and USFS scientists installing dust collectors at the Pinyon Plain uranium mine.
USGS and USFS scientists installing dust collectors at the Pinyon Plain uranium mine.USGS and USFS scientists installing dust collectors at the Pinyon Plain uranium mine. Photo: Mike Duniway. 4/9/2013.
Laysan Albatross and Bonin Petrel Chick
Laysan albatross and Bonin petrel chick, two seabird species especially vulnerable to sea-level rise and sudden flooding on low-lying islands.
Location: Midway Atoll National Wildlife Refuge
Laysan albatross and Bonin petrel chick, two seabird species especially vulnerable to sea-level rise and sudden flooding on low-lying islands.
Location: Midway Atoll National Wildlife Refuge
Boinin Petrel Chick
Boinin petrel chick, a subterranean nesting seabird especially vulnerable to sea-level rise.
Location: Midway Atoll National Wildlife Refuge
Boinin petrel chick, a subterranean nesting seabird especially vulnerable to sea-level rise.
Location: Midway Atoll National Wildlife Refuge
Black-capped Chickadee with a deformed beak that has grown long and curved down
Black-capped Chickadee with a deformed beak that has grown long and curved downA Black-capped Chickadee with a beak that has grown long and curved down. Avian keratin disorder (AKD) is a disease characterized by debilitating beak overgrowth and other abnormalities of keratinized tissues. Affected birds have difficulty feeding and preening and may suffer high rates of mortality.
Black-capped Chickadee with a deformed beak that has grown long and curved down
Black-capped Chickadee with a deformed beak that has grown long and curved downA Black-capped Chickadee with a beak that has grown long and curved down. Avian keratin disorder (AKD) is a disease characterized by debilitating beak overgrowth and other abnormalities of keratinized tissues. Affected birds have difficulty feeding and preening and may suffer high rates of mortality.
Drilling Rig for Shale Gas Development
A drilling rig for shale gas development take at night from an overlook on Route 6 in Bradford County Pennsylvania.
A drilling rig for shale gas development take at night from an overlook on Route 6 in Bradford County Pennsylvania.
Adult Female Deer Tick
Ticks spread the widest variety of diseases that are harmful to humans, including Lyme disease. This image shows an adult female blacklegged tick, or deer tick.
Ticks spread the widest variety of diseases that are harmful to humans, including Lyme disease. This image shows an adult female blacklegged tick, or deer tick.
Sample bottles from pump sampler on the Elwha River
Sample bottles from pump sampler on the Elwha RiverSample bottle carousel from automated ISCO pump sampler deployed on the Elwha River, Washington to obtain suspended sediment samples.
Sample bottles from pump sampler on the Elwha River
Sample bottles from pump sampler on the Elwha RiverSample bottle carousel from automated ISCO pump sampler deployed on the Elwha River, Washington to obtain suspended sediment samples.
Northern long-eared bat with visible symptoms of WNS
Northern long-eared bat with visible symptoms of WNSMyotis septentrionalis, northern myotis (Vespertilionidae) with growth of Geomyces destructans clearly evident.
Northern long-eared bat with visible symptoms of WNS
Northern long-eared bat with visible symptoms of WNSMyotis septentrionalis, northern myotis (Vespertilionidae) with growth of Geomyces destructans clearly evident.
Sea Lamprey Parasitic
Parasitic mouth of the invasive sea lamprey
Parasitic mouth of the invasive sea lamprey
Red-cockaded woodpecker
The red-cockaded woodpecker is a federally listed species that declined in the southeastern United States from approximately 1.6 million cooperative breeding groups to less than 3,500 groups due to loss and degradation of habitat and fire suppression.
The red-cockaded woodpecker is a federally listed species that declined in the southeastern United States from approximately 1.6 million cooperative breeding groups to less than 3,500 groups due to loss and degradation of habitat and fire suppression.
Clark's Grebe at Thermalito Afterbay, CA
Clark's grebe sitting on a nest at Thermalito Afterbay, California.
Clark's grebe sitting on a nest at Thermalito Afterbay, California.
Red-breasted Merganser pair on the North Slope of Alaska
Red-breasted Merganser pair on the North Slope of AlaskaRed-breasted Merganser pair in North Slope of Alaska
Red-breasted Merganser pair on the North Slope of Alaska
Red-breasted Merganser pair on the North Slope of AlaskaRed-breasted Merganser pair in North Slope of Alaska
Studies of contaminant biogeochemistry and microbial processes in surface waters
Studies of contaminant biogeochemistry and microbial processes in surface watersLeft: USGS Employee L. Windham-Myers showing a surface water sample collected in acid-cleaned mason jar (deployed for 24 hours) for a mercury study conducted at the Cosumnes River Nature Preserve (CA). Photographer: M. Marvin-DiPasquale. Date: 10/29/2014.
Studies of contaminant biogeochemistry and microbial processes in surface waters
Studies of contaminant biogeochemistry and microbial processes in surface watersLeft: USGS Employee L. Windham-Myers showing a surface water sample collected in acid-cleaned mason jar (deployed for 24 hours) for a mercury study conducted at the Cosumnes River Nature Preserve (CA). Photographer: M. Marvin-DiPasquale. Date: 10/29/2014.
An Appalachian Mountain Stream in the Spring
An Appalachian Mountain Stream in the Spring. Photographed by Samuel H Austin
An Appalachian Mountain Stream in the Spring. Photographed by Samuel H Austin
USGS Water towers
USGS Water towers at Upper Midwest Environmental Sciences Center
USGS Water towers at Upper Midwest Environmental Sciences Center
NWHC technician preparing avian samples for avian influenza testing
NWHC technician preparing avian samples for avian influenza testingUSGS National Wildlife Health Center laboratory technician preparing avian samples for avian influenza testing.
NWHC technician preparing avian samples for avian influenza testing
NWHC technician preparing avian samples for avian influenza testingUSGS National Wildlife Health Center laboratory technician preparing avian samples for avian influenza testing.
Cannibalistic morph Barred Tiger Salamander Closeup
Cannibalistic morph Barred Tiger Salamander CloseupCannibalistic morph Barred Tiger Salamander Closeup, Jamestown, ND. Perhaps the rarest barred tiger salamander morphotype is the "cannibal" morph. Cannibal morphs are typically larvae and are distinguished by their disproportionally larger heads and pronounced vomerine teeth.
Cannibalistic morph Barred Tiger Salamander Closeup
Cannibalistic morph Barred Tiger Salamander CloseupCannibalistic morph Barred Tiger Salamander Closeup, Jamestown, ND. Perhaps the rarest barred tiger salamander morphotype is the "cannibal" morph. Cannibal morphs are typically larvae and are distinguished by their disproportionally larger heads and pronounced vomerine teeth.
Barred Tiger Salamander larvae
Cannibal morph Barred Tiger Salamander larvae in a bucket of typical morphs larvae, Kidder County, ND.
Cannibal morph Barred Tiger Salamander larvae in a bucket of typical morphs larvae, Kidder County, ND.
Barred Tiger Salamander cannibal larvae with typical larvae in its mouth
Barred Tiger Salamander cannibal larvae with typical larvae in its mouthBarred Tiger Salamander larva with typical larva in its mouth, Kidder County, ND.
Barred Tiger Salamander cannibal larvae with typical larvae in its mouth
Barred Tiger Salamander cannibal larvae with typical larvae in its mouthBarred Tiger Salamander larva with typical larva in its mouth, Kidder County, ND.
Invasive tamarisk on the Colorado River.
This image is of invasive tamarisk (salt cedar) growing on the banks of the Colorado River.
This image is of invasive tamarisk (salt cedar) growing on the banks of the Colorado River.