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3 maj 2022 · Distribution of 11,377 beaver ponds in the Alaska Arctic. Beaver ponds were mapped using an assortment of 2006–2020 high-resolution satellite images.
Recent satellite imagery and older aerial photography show that North American beavers (Castor canadensis) are colonizing the Arctic tundra of Alaska, with over 12,000 ponds thus far counted in western Alaska, a doubling of ponds since 2000.
16 paź 2019 · In Alaska, beavers are moving north from the forests into the Arctic tundra. When beavers build dams in the Arctic, they cause frozen soil, called permafrost, to thaw. Scientists are studying how beavers and the thawing of permafrost are impacting streams and rivers in Alaska’s national parks.
The Arctic has long been home to species that are well-adapted to the region’s cold, harsh conditions—from polar bears and caribou to narwhals and ringed seals. But now these species have a new neighbour: the beaver. And its appearance in Alaska could have significant consequences for ecosystems and biodiversity.
21 gru 2021 · In western Alaska, research has shown that beavers are the dominant factor in almost two thirds (66%) of cases where surface water has increased.
16 lut 2024 · Scientists and others from remote communities across western Alaska and northern Canada concerned about the migration of beavers into the Arctic will gather at the University of Alaska Fairbanks later this month.
The North American beaver is one of the official national wildlife of Canada symbols and is the official state mammal of Oregon and New York. [28] North American beavers are widespread across the continental United States, Canada, southern Alaska, and some parts of northern Mexico.
