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Barry Middleton (left) and Ed Pfeifer (right) of the USGS Southwest Geographic Science Team engaged in field observations of Dall sheep in Denali National Park, Alaska, on July 27, 2009. The study employs satellite remote sensing and field observations to investigate the effect of variable and chang...
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Spotting of Dall Sheep, Denali National Park, Alaska
Barry Middleton (left) and Ed Pfeifer (right) of the USGS Southwest Geographic Science Team engaged in field observations of Dall sheep in Denali National Park, Alaska, on July 27, 2009. The study employs satellite remote sensing and field observations to investigate the effect of variable and chang...
Location: Denali National Park, AK, USA
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Ed Pfeifer of the USGS Southwest Geographic Science Team surveying alpine vegetation during a field study of Dall sheep habitat in Denali National Park, Alaska, on July 28, 2009....
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Dall Sheep Habitat, Denali National Park, Alaska
Ed Pfeifer of the USGS Southwest Geographic Science Team surveying alpine vegetation during a field study of Dall sheep habitat in Denali National Park, Alaska, on July 28, 2009....
Location: Denali National Park, AK, USA
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Ed Pfeifer of the USGS Southwest Geographic Science Team recording field notes in alpine tundra during a field study of Dall sheep habitat in Denali National Park, Alaska, on July 29, 2009...
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Dall Sheep Habitat, Denali National Park, Alaska
Ed Pfeifer of the USGS Southwest Geographic Science Team recording field notes in alpine tundra during a field study of Dall sheep habitat in Denali National Park, Alaska, on July 29, 2009...
Location: Denali National Park, AK, USA
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Ed Pfeifer of the USGS Southwest Geographic Science Team collecting water samples during field work for a study of Dall sheep habitat in Denali National Park, Alaska....
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Sampling Stream Water in Denali National Park, Alaska
Ed Pfeifer of the USGS Southwest Geographic Science Team collecting water samples during field work for a study of Dall sheep habitat in Denali National Park, Alaska....
Location: Denali National Park, AK, USA
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Ed Pfeifer of the USGS Southwest Geographic Science Team recording field notes in alpine tundra during a field study of Dall sheep habitat in Denali National Park, Alaska, on July 29, 2009....
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Survey of Dall Sheep Habitat, Denali National Park, Alaska
Ed Pfeifer of the USGS Southwest Geographic Science Team recording field notes in alpine tundra during a field study of Dall sheep habitat in Denali National Park, Alaska, on July 29, 2009....
Location: Denali National Park, AK, USA
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