Collecting samples (sediment, aquatic vegetation, benthic invertebrates, zooplankton, forage fish, and predatory fish) to evaluate δ 15N ratios in the food web within Liberty Bay to evaluate urbanization effects on the nearshore ecosystem. (Coastal Habitats in Puget Sound program).
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Prize Staghorn Sculpin of Puget Sound
Collecting samples (sediment, aquatic vegetation, benthic invertebrates, zooplankton, forage fish, and predatory fish) to evaluate δ 15N ratios in the food web within Liberty Bay to evaluate urbanization effects on the nearshore ecosystem. (Coastal Habitats in Puget Sound program).
Matanuska Glacier
Matanuska Glacier, Alaska
Denali Landscape Panorama
Panoramic (~180 degree) view of landscape in Denali National Park, Alaska. Photographed on July 27, 2009, during fieldwork on Dall sheep habitat by members of the USGS Southwest Geographic Science Team.
Panoramic (~180 degree) view of landscape in Denali National Park, Alaska. Photographed on July 27, 2009, during fieldwork on Dall sheep habitat by members of the USGS Southwest Geographic Science Team.
Burning Wetlands
A fire burning over the wetlands in Duson, Louisiana
A fire burning over the wetlands in Duson, Louisiana
Sunrise at Pillar Point
Coast Salish canoe journey preparing to launch; sunrise at Pillar Point. The canoe journey pulled a water quality probe, which measured salinity, temperature, pH, and dissolved oxygen.
Coast Salish canoe journey preparing to launch; sunrise at Pillar Point. The canoe journey pulled a water quality probe, which measured salinity, temperature, pH, and dissolved oxygen.
View from Mary's Rock
View from Mary's Rock in Shenandoah National Park, Virginia.
View from Mary's Rock in Shenandoah National Park, Virginia.
Overlook
John Jones and Jasper look from the overlook for changes in vegetation in Shenandoah National Park, Virginia.
John Jones and Jasper look from the overlook for changes in vegetation in Shenandoah National Park, Virginia.
Sunset Sail at Neah Bay
Coast Salish Canoe Journey 2009, preparation in Neah Bay. The journey pulled a water quality probe to measure salinity, temperature, pH, and dissolved oxygen.
Coast Salish Canoe Journey 2009, preparation in Neah Bay. The journey pulled a water quality probe to measure salinity, temperature, pH, and dissolved oxygen.
Hauling Lampara Net in Skagit Bay
USGS employees attempt to capture forage fish with the use of a Lampara net in Skagit Bay.
USGS employees attempt to capture forage fish with the use of a Lampara net in Skagit Bay.
Sand Hills Gate
The sand hills of Nebraska are a unique ecosystem. The photo was taken to capture the overwhelming vastness of the sand hills. Hecla/Whitman, Nebraska.
The sand hills of Nebraska are a unique ecosystem. The photo was taken to capture the overwhelming vastness of the sand hills. Hecla/Whitman, Nebraska.
Arctic Ice
The sun shines over the Arctic Ocean Sept. 1, 2009.
The sun shines over the Arctic Ocean Sept. 1, 2009.
High-Intensity Wildfire Flames
After the photo of the coyote on the run, the next photo on the camera shows high-intensity flames at 9:00 a.m. PST on Oct. 22, 2007. Photo credit: USGS.
After the photo of the coyote on the run, the next photo on the camera shows high-intensity flames at 9:00 a.m. PST on Oct. 22, 2007. Photo credit: USGS.
Northern Pintail Duck
Dr. Hiroyoshi Higuchi (left), Mr. Ken-ichi Tokita (right), and other cooperators from the University of Tokyo, work with USGS scientists to attach a satellite transmitter to the backs of northern pintail ducks on wintering areas of Northern Honshu, Japan.
Dr. Hiroyoshi Higuchi (left), Mr. Ken-ichi Tokita (right), and other cooperators from the University of Tokyo, work with USGS scientists to attach a satellite transmitter to the backs of northern pintail ducks on wintering areas of Northern Honshu, Japan.
Hatteras Island - Post-Hurricane Isabel
Post-storm aerial photography following Hurricane Isabel (2003) showing a new breach that completely severs Hatteras Island.
Post-storm aerial photography following Hurricane Isabel (2003) showing a new breach that completely severs Hatteras Island.
Ecosystems of the West
Mountains, plains, soil, and grasses all work together as part of the natural ecosystems of the American West.
Mountains, plains, soil, and grasses all work together as part of the natural ecosystems of the American West.
Floodwater at Wild Rice River
Floodwater at Wild Rice River. Photo taken from bridge at 174th Ave and 124th St southwest of Horace, ND.
Floodwater at Wild Rice River. Photo taken from bridge at 174th Ave and 124th St southwest of Horace, ND.
Bighead Carp
Bighead carp are a large and troublesome invasive species from Asia found in the great rivers of the central United States.
Bighead carp are a large and troublesome invasive species from Asia found in the great rivers of the central United States.
Interior of Damaged Hospital
The interior of this masonry-built hospital in Cauquenes, Chile had severe fracturing and partially collapsed interior walls following the M 8.8 earthquake on Feb. 27, 2010. This building will be torn down and replaced with a reinforced concrete building.
The interior of this masonry-built hospital in Cauquenes, Chile had severe fracturing and partially collapsed interior walls following the M 8.8 earthquake on Feb. 27, 2010. This building will be torn down and replaced with a reinforced concrete building.
Floodwater at Wild Rice River
Acoustic doppler used to record measurements on Wild Rice River during 2010 flood. Photo taken from bridge at 174th Ave and 124th St southwest of Horace, ND.
Acoustic doppler used to record measurements on Wild Rice River during 2010 flood. Photo taken from bridge at 174th Ave and 124th St southwest of Horace, ND.
Floodwater at Wild Rice River
Acoustic doppler used to record measurements on Wild Rice River during 2010 flood. Photo taken from bridge at 174th Ave and 124th St southwest of Horace, ND.
Acoustic doppler used to record measurements on Wild Rice River during 2010 flood. Photo taken from bridge at 174th Ave and 124th St southwest of Horace, ND.
Bighead Carp
Bighead carp are a large and troublesome invasive species from Asia found in the great rivers of the central United States.
Bighead carp are a large and troublesome invasive species from Asia found in the great rivers of the central United States.