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Browse images from a wide range of science topics covered by USGS. All items in this gallery are considered public domain unless otherwise noted.
Thermokarst lake and river meanders, Seward Peninsula. Dominant ecotypes include Lowland Lake, Lowland Organic-rich Wet Circumacidic Willow Low Shrub, Upland Organic-rich Moist Acidic Dwarf Birch-Tussock Shrub, and Upland Rocky-Loamy Moist Alkaline Sedge-Dryas Meadow.
Thermokarst lake and river meanders, Seward Peninsula. Dominant ecotypes include Lowland Lake, Lowland Organic-rich Wet Circumacidic Willow Low Shrub, Upland Organic-rich Moist Acidic Dwarf Birch-Tussock Shrub, and Upland Rocky-Loamy Moist Alkaline Sedge-Dryas Meadow.
Coastal brackish marsh, Bering Land Bridge National Preserve, Seward Peninsula
Coastal brackish marsh, Bering Land Bridge National Preserve, Seward Peninsula
Tundra lakes, Selawik National Wildlife Refuge
Tundra lakes, Selawik National Wildlife Refuge
Hardwood patch on high ground, Selawik National Wildlife Refuge. Dominant ecotypes include Upland Moist Dwarf Birch-Ericaceous-Willow Low Shrub, upland Organic-rich Moist Acidic Dwarf Birch-Tussock Shrub, and Upland Rocky-Loamy Moist Circumacidic Alder-Willow Tall Shrub.
Hardwood patch on high ground, Selawik National Wildlife Refuge. Dominant ecotypes include Upland Moist Dwarf Birch-Ericaceous-Willow Low Shrub, upland Organic-rich Moist Acidic Dwarf Birch-Tussock Shrub, and Upland Rocky-Loamy Moist Circumacidic Alder-Willow Tall Shrub.
Flooded thermokarst area with high escarpment, Bering Land Bridge National Preserve, Seward Peninsula.
Flooded thermokarst area with high escarpment, Bering Land Bridge National Preserve, Seward Peninsula.
Sea ice in the Chukchi Sea in 2013.
Sea ice in the Chukchi Sea in 2013.
Scientists preparing the CTD for deployment for habitat sampling
Scientists preparing the CTD for deployment for habitat sampling
Walrus reflections in the water. Taken from a USGS research cruise in the Chukchi Sea,
Walrus reflections in the water. Taken from a USGS research cruise in the Chukchi Sea,
Pacific walrus resting on ice in the Chukchi Sea, Alaska. This field work was part a satellite tagging expedition in the northwest Chukchi Sea to understand movement patterns, foraging behaviors of walruses and important summering habitats.
Pacific walrus resting on ice in the Chukchi Sea, Alaska. This field work was part a satellite tagging expedition in the northwest Chukchi Sea to understand movement patterns, foraging behaviors of walruses and important summering habitats.
Mowed grasses interspersed with low shrubs in coastal dunes of the Ki’i Unit in James Campbell National Wildlife Refuge on Oahu, Hawaii
Mowed grasses interspersed with low shrubs in coastal dunes of the Ki’i Unit in James Campbell National Wildlife Refuge on Oahu, Hawaii
Trail made by cattle through hillside Heracleum maximum-Geranium erianthum forb meadow on Chirikof Island, Alaska.
Trail made by cattle through hillside Heracleum maximum-Geranium erianthum forb meadow on Chirikof Island, Alaska.
Ephemeral wet meadow surrounded by mowed vegetation in the Punamano Unit of the James Campbell National Wildlife Refuge on Oahu, Hawaii
Ephemeral wet meadow surrounded by mowed vegetation in the Punamano Unit of the James Campbell National Wildlife Refuge on Oahu, Hawaii
An arctic fox on the tundra of the north slope of Alaska near a field camp of the Alaska Science Center.
An arctic fox on the tundra of the north slope of Alaska near a field camp of the Alaska Science Center.
A view of the inflatable boat rack on the back of the R/V Alaskan Gyre
A view of the inflatable boat rack on the back of the R/V Alaskan Gyre
Arctic fox depredates a nesting female white-fronted goose. Arctic Coastal Plain of Alaska, USA.
Arctic fox depredates a nesting female white-fronted goose. Arctic Coastal Plain of Alaska, USA.
White-fronted geese at their nest site while a caribou stands in the foreground on the Arctic Coastal Plain in northern Alaska. June 2014, USGS photo.
White-fronted geese at their nest site while a caribou stands in the foreground on the Arctic Coastal Plain in northern Alaska. June 2014, USGS photo.
White-fronted geese defend their nest from an arctic fox on the Arctic Coastal Plain in northern Alaska. June 2014, USGS photo.
White-fronted geese defend their nest from an arctic fox on the Arctic Coastal Plain in northern Alaska. June 2014, USGS photo.
Semipalmated Sandpiper on the Arctic Coastal Plain, Alaska.
Semipalmated Sandpiper on the Arctic Coastal Plain, Alaska.
A waterfall flowing into Exit Creek
A waterfall flowing into Exit Creek
Exit Creek in front of some mountains
Exit Creek in front of some mountains
Tundra Swan swimming on a lake in northern Alaska.
Tundra Swan swimming on a lake in northern Alaska.