As a result of this fire behavior, some large paper birch trees often survive fire in pure stands, and thus become seed trees for postfire establishment [ 51 ].
(some large paper birch trees; survive; fire; L:in pure stands; T:often) (some large paper birch trees; become; seed trees; T:for postfire establishment)
some large paper birch trees some large paper birch trees
survive become
fire L:in pure stands T:often
seed trees T:for postfire establishment