When we panted our way up to Hemlock Pass on the trail to Melakwa Lake, Karen noticed a big tree, perhaps 20′ from the trail, that had its lower bark removed. Examining it, we discovered that the tree had been skinned alive by an American Black Bear, and that two other trees in the vicinity had experienced the same fate.
This was actually the fourth time we have seen this phenonmenon; in all cases in the Cascade and Olympic Mountains. When bears emerge from hibernation in the spring, they are REALLY hungry, and where there are no people or pic-a-nic baskets to consume, they turn to trees. Specifically, to the Pacific Silver Fir, though they are known to have less than selective taste in trees and will consume others as necessary. But the Pacific Silver Fir is apparently the caviar of trees, and is targeted.
Can you imagine a bear coming up to a tree, delicately sniffing the bark and nibbling it to see if the taste is something exquisite? No? Neither can I. Instead, the bear roughly uses its claws to rip and shred the outer bark from a tree, then uses its front teeth (not its canines) to scrape the nutrient-rich phloem layer, which we call the “inner bark,” and consume the sugary treat. Mmmmmm …
You might think that foresters would dislike this bear habit, because it often girdles the trees and kills them. Right again! Foresters have long wrestled with strategies for discouraging bears from eating trees, even going so far as to put “vending machines” out in the woods where bears can get a treat that has similar nutritional properties as the trees, and is a lot easier for a lazy bear to exploit. Though I’m not sure where the bears are supposed to get the quarters for the vending machines … perhaps from campers’ pockets while they are “safely” asleep in their thin nylon tents?