Meanders on the Agashashok River
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Meanders on the Agashashok River
A tributary at the Agashashok River Watershed
A tributary at the arctic-boreal transition in the Agashashok River Watershed
A tributary at the arctic-boreal transition in the Agashashok River Watershed
Water falling in a watershed drains to a common point.
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
Semipalmated Sandpiper on the Colville River Delta, Alaska
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.
Pacific Loon take off
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.
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
Canada Goose on the Colville River Delta
Snow geese and Black Brant fight over nesting territories
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.
Assessing the severity of the Funny River fire on the Kenai Peninsula
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 are becoming more common in many parts of Alaska
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
Black Brant flying near the Colville River, northern Alaska
Black Brant flying near the Colville River, northern Alaska.
Black Brant flying near the Colville River, northern Alaska.
The top of Tusuk Channel on the Pilgrim River
Near the top of the Tusuk Channel of the Pilgrim River.
Near the top of the Tusuk Channel of the Pilgrim River.
Fire effects monitoring after the Funny River Fire, Kenai Peninsula AK
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
R/V Solstice
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
Salcha River bridge near Salchaket
Nenana River sonar top near Windy
Nenana River sonar top near Windy
Alaska DFG vessel Solstice
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
Sea ice blocks pushed up in a pressure ridge of ice
Polar bear wearing a GPS satellite video-camera collar
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.
Black-capped Chickadee with lower elongated and upper curved beak
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.
Black-capped Chickadee with lower elongated and upper curved beak
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