‘Time stamps’ in shrubs show when beavers began invading Canadian Arctic

Mongabay
May 14, 2026, 3:14 am48 pts
Beavers are expanding their range into Canada’s western Arctic, and a recent study has reconstructed when these ecosystem engineers first became active in the area — sometime around 2008. Historically, North American beavers (Castor canadensis) have been associated with boreal and temperate waterways.…

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