A tributary at the arctic-boreal transition in the Agashashok River Watershed
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A tributary at the arctic-boreal transition in the Agashashok River Watershed
Watersheds: A tributary at the arctic-boreal transition in the Agashashok River Watershed
Watersheds: A tributary at the arctic-boreal transition in the Agashashok River Watershed
A Semipalmated Sandpiper on the bow of a boat on the Colville River Delta in northern Alaska. This picture was taken during the Changing Arctic Ecosytems project. The band recoveries of this species were from as far away as Peru. These birds are only about 25 grams a piece.
A Semipalmated Sandpiper on the bow of a boat on the Colville River Delta in northern Alaska. This picture was taken during the Changing Arctic Ecosytems project. The band recoveries of this species were from as far away as Peru. These birds are only about 25 grams a piece.
A Pacific Loon taking off from a small lake near the Colville River Delta in northern Alaska.
A Pacific Loon taking off from a small lake near the Colville River Delta in northern Alaska.
Two Black Brant in a wetland near the Colville River Delta.
Two Black Brant in a wetland near the Colville River Delta.
Canada Goose on the Colville River Delta
Canada Goose on the Colville River Delta
Two snow geese and a single black brant goose fight over nesting territories on the Colville River Delta in Alaska.
Two snow geese and a single black brant goose fight over nesting territories on the Colville River Delta in Alaska.
Pre- and post-fire measurements of fire effects help ecologists, fire scientists, and managers determine how the severity of wildfires affects plants, animal habitat, and ecosystem services.
Pre- and post-fire measurements of fire effects help ecologists, fire scientists, and managers determine how the severity of wildfires affects plants, animal habitat, and ecosystem services.
Reburns, or fires that burn more frequently than expected, are becoming more common in Alaska and can cause major changes in vegetation composition, wildlife habitat, and landscape resilience
Reburns, or fires that burn more frequently than expected, are becoming more common in Alaska and can cause major changes in vegetation composition, wildlife habitat, and landscape resilience
Near the top of the Tusuk Channel of the Pilgrim River.
Near the top of the Tusuk Channel of the Pilgrim River.
Black Brant flying near the Colville River, northern Alaska.
Black Brant flying near the Colville River, northern Alaska.
Pre- and post-fire measurements of fire effects help ecologists, fire scientists, and managers determine how the severity of wildfires affects plants, animal habitat, and ecosystem services
Pre- and post-fire measurements of fire effects help ecologists, fire scientists, and managers determine how the severity of wildfires affects plants, animal habitat, and ecosystem services
Alaska Department of Fish and Games vessel Solstice carried USGS scientists for three weeks in May 2015 while they mapped 650 square kilometers of seafloor and features beneath the seafloor in fine detail.
Alaska Department of Fish and Games vessel Solstice carried USGS scientists for three weeks in May 2015 while they mapped 650 square kilometers of seafloor and features beneath the seafloor in fine detail.
Salcha River bridge near Salchaket
Nenana River sonar top near Windy
Mapping along the Queen Charlotte-Fairweather fault required several days aboard the Alaska Department of Fish and Game research vessel Solstice. Here, the boat sits in a marina near Cordova, Alaska.
Mapping along the Queen Charlotte-Fairweather fault required several days aboard the Alaska Department of Fish and Game research vessel Solstice. Here, the boat sits in a marina near Cordova, Alaska.
Sea ice blocks pushed up in a pressure ridge of ice
Sea ice blocks pushed up in a pressure ridge of ice
An adult female polar bear on the sea ice wearing a GPS satellite video-camera collar. GPS video-camera collars were applied to solitary adult female polar bears for 8 - 12 days in April, 2014-2016. These collars enabled researchers to understand the movements, behaviors, and foraging success of polar bears on the sea ice.
An adult female polar bear on the sea ice wearing a GPS satellite video-camera collar. GPS video-camera collars were applied to solitary adult female polar bears for 8 - 12 days in April, 2014-2016. These collars enabled researchers to understand the movements, behaviors, and foraging success of polar bears on the sea ice.
A Black-capped Chickadee with a severely deformed beak where the upper beak is elongated and curved down while the lower beak is elongated and straight. Avian keratin disorder (AKD) is a disease characterized by debilitating beak overgrowth and other abnormalities of keratinized tissues.
A Black-capped Chickadee with a severely deformed beak where the upper beak is elongated and curved down while the lower beak is elongated and straight. Avian keratin disorder (AKD) is a disease characterized by debilitating beak overgrowth and other abnormalities of keratinized tissues.
A Black-capped Chickadee with a severely deformed beak where the upper beak is elongated and curved down while the lower beak is elongated and straight
A Black-capped Chickadee with a severely deformed beak where the upper beak is elongated and curved down while the lower beak is elongated and straight
Satellite image from the USGS/NASA Landsat-8 satellite showing the eruption cloud at Pavlof Volcano on November 15 at 12:46 pm AKST (21:46 UTC). This is just a portion of the eruption cloud, which extended for more than 250 miles to the northwest at the time this image was collected.
Satellite image from the USGS/NASA Landsat-8 satellite showing the eruption cloud at Pavlof Volcano on November 15 at 12:46 pm AKST (21:46 UTC). This is just a portion of the eruption cloud, which extended for more than 250 miles to the northwest at the time this image was collected.