Lumberjacked
ArboristSite Operative
I would say that tree is definitely "toast," it would be a absolute miracle if that tree stayed alive for more then 4 or 5 years. It definitely will not grow any bigger due to the lost of the cambium layer. Depending how far in the beaver chewed would determine how much strength the tree actually lost, so maybe your tree swing isnt a total loss. I would plant another tree ASAP and eradicate the beaver. Funny side story about a beaver...I live near a lake and we had a beaver problem 3 years ago but no one could find the beavers, and they were doing a ton of damage around the lake. They ended up being in this guys boat house but b/c he was never at his 85 acre, "eleventy billion" dollar estate he never realized it.