Biologist standing in the Tanana River sampling the open water. This project was to see chum salmon spawning habitat in the winter.
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: 1458
Tanana River winter water sampling
Biologist standing in the Tanana River sampling the open water. This project was to see chum salmon spawning habitat in the winter.
Helicopter used for transportation on Tanana River winter sampling
A helicopter used to transport personnel to the Tanana River to winter sample chum salmon spawning habitat.
A helicopter used to transport personnel to the Tanana River to winter sample chum salmon spawning habitat.
The northern lights over the Selawik River, Alaska
The northern lights over the Selawik River, Alaska
The northern lights over the Selawik River, Alaska
Sheefish eggs from the Selawik River, Alaska
Sheefish eggs in a vial from the Selawik River, Alaska
Sheefish eggs in a vial from the Selawik River, Alaska
A close up of a moose on the Selawik River, Alaska
A moose on the shore of the Selawik River. This moose was present during the Sheefish sediment impact study field work.
A moose on the shore of the Selawik River. This moose was present during the Sheefish sediment impact study field work.
The Selawik River, Alaska
Scenic of the Selawik River
Clipping a sheefish fin in the Selawik River
Biologists clip the tip of one of the ventral fins of a sheefish that is in a cradle in the Selawik River, Alaska. This study was collecting genetic samples to help find impacts of fine sediment on sheefish. The results were no impacts due to low amounts of sediments present.
Biologists clip the tip of one of the ventral fins of a sheefish that is in a cradle in the Selawik River, Alaska. This study was collecting genetic samples to help find impacts of fine sediment on sheefish. The results were no impacts due to low amounts of sediments present.
Biologist recording data on Black-capped Chickadee
John Terenzi recording data on Black-capped Chickadee.
John Terenzi recording data on Black-capped Chickadee.
Caribou crossing the Selawik River, Alaska
Caribou crossing the Selawik River, Alaska
Caribou crossing the Selawik River, Alaska
Bar-tailed Godwits flying over water near Cape Avinof, Alaska
Bar-tailed Godwits - photo taken on mudflats near Cape Avinof, Alaska, while doing avian influenza sampling.
Bar-tailed Godwits - photo taken on mudflats near Cape Avinof, Alaska, while doing avian influenza sampling.
Bar-tailed Godwits on mudflats near Cape Avinof, Alaska
Bar-tailed Godwits - photo taken on mudflats near Cape Avinof, Alaska, while doing avian influenza sampling.
Bar-tailed Godwits - photo taken on mudflats near Cape Avinof, Alaska, while doing avian influenza sampling.
Bar-tailed Godwits flying over mudflats near Cape Avinof, Alaska
Bar-tailed Godwits - photo taken on mudflats near Cape Avinof, Alaska. USGS and USFWS recently found that almost the entire population of Alaska-breeding bar-tailed godwits feed along sand bars near the mouth of the Kuskokwim River in autumn. These godwits spend the nonbreeding season primarily in eastern Australia an
Bar-tailed Godwits - photo taken on mudflats near Cape Avinof, Alaska. USGS and USFWS recently found that almost the entire population of Alaska-breeding bar-tailed godwits feed along sand bars near the mouth of the Kuskokwim River in autumn. These godwits spend the nonbreeding season primarily in eastern Australia an
Bar-tailed Godwit flock on Cape Avinof, western Alaska
Bar-tailed Godwit flock flying over the mudflats on Cape Avinof, western Alaska.
Bar-tailed Godwit flock flying over the mudflats on Cape Avinof, western Alaska.
Polar Bears along Arctic Sea Ice
Polar bears along sea ice in the Arctic Ocean.
Polar bears along sea ice in the Arctic Ocean.
Pacific brant feeding on eelgrass beds in Izembek Lagoon, Alaska
Pacific brant feeding on submerged eelgrass at Grant Point, Izembek Lagoon, Alaska.
Pacific brant feeding on submerged eelgrass at Grant Point, Izembek Lagoon, Alaska.
Spawing sockeye salmon in a Matanuska River side channel, Alaska
A spawining sockeye salmon with it's back out of the water in a side channel of the Matanuska River.
A spawining sockeye salmon with it's back out of the water in a side channel of the Matanuska River.
Eelgrass in Kinzarof Lagoon
Eelgrass (Zolstera marina) in Kinzarof Lagoon
Eelgrass (Zolstera marina) in Kinzarof Lagoon
A bridge over the Matanuska River
Scenic view of the Matanuska River with a bridge spanning across. This photo was part of an erosion project on the river.
Scenic view of the Matanuska River with a bridge spanning across. This photo was part of an erosion project on the river.
Measuring an Arctic grayling from the Mackenzie River, Canada
Measuring an Arctic Grayling from the Mackenzie River in Canada. This was part of an Arctic Cisco project.
Measuring an Arctic Grayling from the Mackenzie River in Canada. This was part of an Arctic Cisco project.
Biologist measuring a Mackenzie River Arctic grayling, Canada
Measuring an Arctic Grayling from the Mackenzie River in Canada. This was part of an Arctic Cisco project.
Measuring an Arctic Grayling from the Mackenzie River in Canada. This was part of an Arctic Cisco project.
Sea Otter at Knight Island
Sea Otter at Knight Island (Prince William Sound) Alaska
Sea Otter at Knight Island (Prince William Sound) Alaska