Great Blue Herons are found throughout much of North America, but are always associated with water. Because they fish by sight, they need relatively shallow water. Release of too much water through the canals north of the Everglades can interfere with their ability to find food.
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Great Blue Heron
Great Blue Herons are found throughout much of North America, but are always associated with water. Because they fish by sight, they need relatively shallow water. Release of too much water through the canals north of the Everglades can interfere with their ability to find food.
Rouge River National Forest
This picture is taken while climbing Mt. McLoughlin looking east over the Rouge River National Forest and Klamath Lake in Southern Oregon.
This picture is taken while climbing Mt. McLoughlin looking east over the Rouge River National Forest and Klamath Lake in Southern Oregon.
Camps Bay Sunset
Sunset over Camps Bay, South Africa
Sunset over Camps Bay, South Africa
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.
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).
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).
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.
Layers of Ice, Hayden Glacier
This picture was taken from the base of the Hayden Glacier in the Three Sisters Wilderness Area.
This picture was taken from the base of the Hayden Glacier in the Three Sisters Wilderness Area.
Matanuska Glacier
Matanuska Glacier, Alaska
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.
Measuring Forest Structure with LiDAR
A LiDAR (Light Detection and Ranging) instrument measures the 3-D structure of a ponderosa pine forest stand in Coconino National Forest near Flagstaff, Arizona, on July 13, 2009.
A LiDAR (Light Detection and Ranging) instrument measures the 3-D structure of a ponderosa pine forest stand in Coconino National Forest near Flagstaff, Arizona, on July 13, 2009.
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.
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.
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.
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.
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.
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.