Arctic Beavers
Beavers are slowly migrating farther north into the Arctic due to the warming climate, producing what a new U.S. government report says is a “significant impact” on the landscape.
NOAA’s Arctic Report Card 2021 says western Alaska has seen a doubling of its beaver population to more than 12,000 during the past 20 years, compared to none between 1949 and 1955. Their dams are increasing surface water and adding to the rate of permafrost melt, which in turn releases the greenhouse gases methane and carbon dioxide. The ponds are also said to be helping new fish and invertebrate species move in.
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