‘Time stamps’ in shrubs show when beavers began invading Canadian Arctic
via news.mongabay.com
Short excerpt below. Read at the original source.
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. However, they’re increasingly being observed moving northward in the Arctic tundra. This […]