An adult great spangled fritillary butterfly rests on the arm of a chair at a field research station.
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Great spangled fritillary (Speyeria cybele) on the arm of a chair
An adult great spangled fritillary butterfly rests on the arm of a chair at a field research station.
High streamflow for Lehman Creek fed by snow melt, Lehman Cr., Nevada
Snowmelt runoff: High level of stream flow for Lehman Creek fed by snow melt in the high country, Great Basin National Park, Nevada, USA
Snowmelt runoff: High level of stream flow for Lehman Creek fed by snow melt in the high country, Great Basin National Park, Nevada, USA
Coral reef surrounding Loggerhead Key in Dry Tortugas National Park
Looking south over the coral reef surrounding Loggerhead Key, Dry Tortugas National Park. Dry Tortugas Lighthouse stands on Loggerhead Key. To the right in the background is Garden Key, where civil-war era Fort Jefferson is located.
Looking south over the coral reef surrounding Loggerhead Key, Dry Tortugas National Park. Dry Tortugas Lighthouse stands on Loggerhead Key. To the right in the background is Garden Key, where civil-war era Fort Jefferson is located.
USGS Scientist at Work
Seth Book examines ground-water discharge along the shorline of Hood Canal, WA.
Seth Book examines ground-water discharge along the shorline of Hood Canal, WA.
Photographer Overlooking Columbia Glacier
Photographer Tad Pfeffer capturing images of Columbia Glacier in Prince William Sound, Alaska. He is looking down-glacier towards the ice front, which faces open water in the fjord. This open water is extremely rare, and has not happened again since 2005. The fjord is typically covered with iceberg debris, called mélange.
Photographer Tad Pfeffer capturing images of Columbia Glacier in Prince William Sound, Alaska. He is looking down-glacier towards the ice front, which faces open water in the fjord. This open water is extremely rare, and has not happened again since 2005. The fjord is typically covered with iceberg debris, called mélange.
Fish River on the Seward Peninsula, Alaska
Scenic view of the Fish River on Seward Peninsula, Alaska.
Scenic view of the Fish River on Seward Peninsula, Alaska.
Fish River on the Seward Peninsula, Alaska
Scenic view of the Fish River on Seward Peninsula, Alaska.
Scenic view of the Fish River on Seward Peninsula, Alaska.
PubTalk — Deep Freeze
The Impact of Science on U.S. Climate-Change Policy
By Judy Layzer, MIT Political Scientist, and Herman Karl, USGS Earth Scientist
The Impact of Science on U.S. Climate-Change Policy
By Judy Layzer, MIT Political Scientist, and Herman Karl, USGS Earth Scientist
Grizzly Under Barbed Wire
Grizzly bear goes under barbed wire into a hair snag station, sniffs scent lure pile, and leaves. DNA analysis of hair deposited on the barbs identifies the bear for a study of bear population size.
Grizzly bear goes under barbed wire into a hair snag station, sniffs scent lure pile, and leaves. DNA analysis of hair deposited on the barbs identifies the bear for a study of bear population size.
Whiskered Auklet in the Aleutian Islands
Whiskered Auklet in the Aleutian Islands
Whiskered Auklet in the Aleutian Islands
Groundwater Monitoring Well Long Island, New York
Preparing to sample a groundwater monitoring well on Long Island, New York
Preparing to sample a groundwater monitoring well on Long Island, New York
South-facing Mount St. Helens with Mount Hood and Mount Jefferson o...
South-facing aerial view of Mount St. Helens with Mount Hood (left) and Mount Jefferson (right) on the horizon. June 8, 2005.
South-facing aerial view of Mount St. Helens with Mount Hood (left) and Mount Jefferson (right) on the horizon. June 8, 2005.
Deploying Fishing Nets
USGS scientists on USGS Research Vessel Musky II, deploying nets for fishing on Lake Erie.
USGS scientists on USGS Research Vessel Musky II, deploying nets for fishing on Lake Erie.
Juvenile herring with classic signs of VHS
Juvenile herring with classic signs of VHS including focal hemorrhaging around the eyes, mouth, and fin bases.
Juvenile herring with classic signs of VHS including focal hemorrhaging around the eyes, mouth, and fin bases.
Emerald Lake, Rocky National Park
Emerald Lake is at maximum depth levels in the summer, when snowmelt from surrounding peaks feeds the lake.
Emerald Lake is at maximum depth levels in the summer, when snowmelt from surrounding peaks feeds the lake.
Big Grizzly at Hair Trap
Grizzly bear climbs over barbed wire at a hair snag station near Glacier NP, Montana. DNA analysis of bear hair is used to identify individuals as part of study to determine the size of the bear population.
Grizzly bear climbs over barbed wire at a hair snag station near Glacier NP, Montana. DNA analysis of bear hair is used to identify individuals as part of study to determine the size of the bear population.
PubTalk — Sonoran Desert
Fragile Land of Extremes
A video presentation and discussion
Research Ecologists Cecil Schwalbe and Todd Esque will introduce the 2003 USGS video Sonoran Desert: Fragile Land of Extremes, present an update on recent research, and answer your questions.
Fragile Land of Extremes
A video presentation and discussion
Research Ecologists Cecil Schwalbe and Todd Esque will introduce the 2003 USGS video Sonoran Desert: Fragile Land of Extremes, present an update on recent research, and answer your questions.
Groundwater quality sampling on Long Island NBU
USGS scientist sampling groundwater quality on Long Island, NY
USGS scientist sampling groundwater quality on Long Island, NY
Yukon River near Eagle, Alaska
Yukon River and rainbow near Eagle, Alaska
Yukon River and rainbow near Eagle, Alaska
Mojave Desert Tortoise
Mojave Desert Tortoise found in Piute Valley in Clark County, Nevada, in
2005
Mojave Desert Tortoise found in Piute Valley in Clark County, Nevada, in
2005
Researcher working at the microscope
Researcher, works at the microscope, Marrowstone Marine Field Station, Nordland, WA.
Researcher, works at the microscope, Marrowstone Marine Field Station, Nordland, WA.