Beaver Damage

Posted by Randy - February 7th, 2011

Beaver Damage

Beaver Damaged Cottonwood

The Columbia River Basin supports a large Beaver population. North America’s largest rodent, the Beaver lives along waterways, builds its dens and dams with trees and shrubs that it fells and hauls, and feeds on the cambial tissue, or inner bark of live trees. They prefer softwoods such as Cottonwood and other Poplars, but will also eat Willow, Maple, and many other tree species. Their feeding activity is very damaging to trees, often leading to tree failure or death, and the best counter-measure is probably fencing around the tree’s trunk with heavy wire (leave enough space for the tree to grow). There are various ‘non-toxic’ repellents available, which appear to work in some cases, but may require frequent application. Despite their sometimes pesky behavior, Beavers are still a very important part of our local ecology.

Leave a Reply