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U.S. Ecosystems Threatened by Climate Change

Natural ecosystems in the United States are under greater stress from climate change than at any previous time in human history, according to a new assessment by academic institutions public and private agencies. The report says these stressed ecosystems are also stressing wild plant and animal species and threatening the nation’s biodiversity.
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Adult female walruses on ice floe with young in waters of the Eastern Chukchi Sea, Alaska, face the threat of melting sea ice. (S.A. Sonsthagen/USGS)
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Adult female walruses on ice floe with young in waters of the Eastern Chukchi Sea, Alaska, face the threat of melting sea ice. (S.A. Sonsthagen/USGS)

Forest die-off in the America Southwest is projected to occur more frequently due to the impact of a warmer world. (Craig D.Allen/USGS)
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Forest die-off in the America Southwest is projected to occur more frequently due to the impact of a warmer world. (Craig D.Allen/USGS)

The Meltwater stonefly is the first insect species being considered for listing due to climate change. (Joe Giersch/USGS)
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The Meltwater stonefly is the first insect species being considered for listing due to climate change. (Joe Giersch/USGS)

Scientists predict that marshes in the Plum Island Estuary in Massachusetts will submerge under a conservative sea-level rise scenario. (Matthew Kirwan/USGS)
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Scientists predict that marshes in the Plum Island Estuary in Massachusetts will submerge under a conservative sea-level rise scenario. (Matthew Kirwan/USGS)

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