The article says, "The natives stripped just the bark [ to make canoes ] to let the trees regenerate."

The tree regenerates easily after fires.

When forests are felled, isolated trees are often left standing and the tree regenerates easily.

It grows from seed, and cut or broken trees will often regenerate from the trunk.

Mule deer will also eat the young shoots when the trees are regenerating after fire.

Mature trees survive fire, and can regenerate more rapidly after fire than the Douglas-firs with which they are often associated.

Larger trees such as Oak and Ash are regenerating in this area.

The tree regenerates elsewhere, where there are bison and wild cattle or even domestic buffaloes and cattle.

The natives stripped just the bark to let the trees regenerate.

The tree coppices fairly well but regenerates freely by root suckers and natural layering.