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Images

Browse images from a wide range of science topics covered by USGS. All items in this gallery are considered public domain unless otherwise noted.

Filter Total Items: 1585
The morning fog on Pilgrim River, Alaska
The morning fog on Pilgrim River, Alaska
The morning fog on Pilgrim River, Alaska
The morning fog on Pilgrim River, Alaska

A morning fog on the Pilgrim River. The camp is from the thermal ecology of sockeye salmon project.

A morning fog on the Pilgrim River. The camp is from the thermal ecology of sockeye salmon project.

Checking a fyke net near the shore of the Pilgrim River
Checking a fyke net near the shore of the Pilgrim River
Checking a fyke net near the shore of the Pilgrim River
Checking a fyke net near the shore of the Pilgrim River

Biologists are checking a fyke net in the Pilgrim River for juvenile sockeye salmon to tag with archival tags.  Unfortunately none were large enough for tagging.

Biologists are checking a fyke net in the Pilgrim River for juvenile sockeye salmon to tag with archival tags.  Unfortunately none were large enough for tagging.

A Bar-tailed Godwit with a Z0 tag on it's leg and a satellite transmitter antenna emerging from rear feathers
Bar-tailed Godwit with a satellite transmitter and tag Z0
Bar-tailed Godwit with a satellite transmitter and tag Z0
Bar-tailed Godwit with a satellite transmitter and tag Z0

Bar-tailed godwit "Z0" instrumented with an implanted Argos satellite transmitter (note dorsally exposed antenna) to facilitate aerodynamics during the species non-stop flights across the Pacific Ocean.

Bar-tailed godwit "Z0" instrumented with an implanted Argos satellite transmitter (note dorsally exposed antenna) to facilitate aerodynamics during the species non-stop flights across the Pacific Ocean.

Juvenile salmon trapping on the Nome River, Alaska
Juvenile salmon trapping on the Nome River, Alaska
Juvenile salmon trapping on the Nome River, Alaska
Juvenile salmon trapping on the Nome River, Alaska

Biologists checking a fyke net as part of a fish project for the Norton Sound Economic Development Corporation.  Otoliths were extracted and read for ages from the fish captured in this fyke net.

Biologists checking a fyke net as part of a fish project for the Norton Sound Economic Development Corporation.  Otoliths were extracted and read for ages from the fish captured in this fyke net.

Checking a fyke net from a boat in the Nome River
Checking a fyke net in the Nome River
Checking a fyke net in the Nome River
Checking a fyke net in the Nome River

Biologists checking a fyke net as part of a fish project for the Norton Sound Economic Development Corporation.  Otoliths were extracted and read for ages from the fish captured in this fyke net.

Biologists checking a fyke net as part of a fish project for the Norton Sound Economic Development Corporation.  Otoliths were extracted and read for ages from the fish captured in this fyke net.

An inclined plane trap used to catch salmon smolt
An inclined plane trap used to catch salmon smolt
An inclined plane trap used to catch salmon smolt
An inclined plane trap used to catch salmon smolt

An inclined plane trap on the Kwethluk River. Biologists are capturing chum salmon juvenile smolt.

A Matanuska River side channel
A Matanuska River side channel
A Matanuska River side channel
A Matanuska River side channel

A side channel of the Matanuska River. Results from this study were published in Curran, J.H., McTeague, M.L., Burril, S.E., and Zimmerman, C.E., 2011, Distribution, persistence, and hydrologic characteristics of salmon spawning habitats in clearwater side channels of the Matanuska River, southcentral Alaska: U.S.

A side channel of the Matanuska River. Results from this study were published in Curran, J.H., McTeague, M.L., Burril, S.E., and Zimmerman, C.E., 2011, Distribution, persistence, and hydrologic characteristics of salmon spawning habitats in clearwater side channels of the Matanuska River, southcentral Alaska: U.S.

Winter phase Arctic fox on the northern coast of Alaska
Winter phase Arctic fox on the northern coast of Alaska
Winter phase Arctic fox on the northern coast of Alaska
Winter phase Arctic fox on the northern coast of Alaska

An arctic fox in it's white winter phase. Taken during polar bear studies on the northern coast of Alaska.

An anesthetized polar bear lying on the snow while a scientist is measuring the neck area where hair is missing due to alopecia
A polar bear with hair loss (alopecia) along its neck
A polar bear with hair loss (alopecia) along its neck
A polar bear with hair loss (alopecia) along its neck

A polar bear with hair loss (alopecia) along its neck. The bear was captured by USGS scientists using the immobilizing drug Telazol

Chickadee with a deformed beak in a bush
Black-capped Chickadee with elongated upper beak
Black-capped Chickadee with elongated upper beak
Black-capped Chickadee with elongated upper beak

Black-capped Chickadee with elongated upper beak. 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 elongated upper beak. 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.

Image: Long-Range Radar Station and Landfill
Long-Range Radar Station and Landfill
Long-Range Radar Station and Landfill
Long-Range Radar Station and Landfill

This oblique aerial photograph from 2006 shows the Barter Island long-range radar station landfill threatened by coastal erosion. The landfill was subsequently relocated further inland, however, the coastal bluffs continue to retreat.

This oblique aerial photograph from 2006 shows the Barter Island long-range radar station landfill threatened by coastal erosion. The landfill was subsequently relocated further inland, however, the coastal bluffs continue to retreat.

Red-necked Phalarope chicks
Red-necked Phalarope hatchlings, Prudhoe Bay, Alaska
Red-necked Phalarope hatchlings, Prudhoe Bay, Alaska
Red-necked Phalarope hatchlings, Prudhoe Bay, Alaska

Red-necked Phalarope hatchlings (chicks). The photo was taken at Prudhoe Bay, Alaska as part of nest-monitoring research.

Unuk River
Unuk River in Southeast Alaska
Unuk River in Southeast Alaska
Unuk River in Southeast Alaska

Unuk River is one of the transboundary watersheds of Southeast Alaska.

Taku River
Taku River in Southeast Alaska
Taku River in Southeast Alaska
Taku River in Southeast Alaska

Taku River is one of the transboundary watersheds of Southeast Alaska.

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