One may assume that it was the disappearance of breeding habitats of this kind, or similar, that led to the earlier declines in tree frog populations.
(breeding habitats of this kind, or similar; led; to the earlier declines in tree frog populations) (One; may assume; that it was the disappearance of breeding habitats of this kind, or similar) Context(One may assume,List([0, 14))):(it; was; the disappearance of breeding habitats of this kind, or similar)
One may assume,List([0, 14))
breeding habitats of this kind, or similar One it
led may assume was
to the earlier declines in tree frog populations
that it was the disappearance of breeding habitats of this kind, or similar
the disappearance of breeding habitats of this kind, or similar