Excerpt:
Sycamore is a dense shade tree and creates slow-decaying leaf litter, which creates rich woodland ecosystems for many beings.  Mature trees often develop hollow areas in their trunks which make ready homes for opossum, owls, and other forest creatures.  Even the bark creates a home for someone; thick flaking bark is highly textured, providing thousands of little crevices for insect homes.

Sycamores are super spreaders thanks to their seeds.  Known as a samara, each seed has a little wing that helps it take flight as it falls.  So many take root, that young Sycamores can be considered by humans pushy intruders.  Life many weed species producing massive amounts of wind-distributed seeds, Sycamore is prolific, abundant, and generous.