Bats are particularly important on islands

Neil Jun Lobite Bat Ecology, Evolution and Conservation

Bats are particularly important on islands where they are often the only flying animals big enough to transport larger seeds. Fruit bats have been shown to be the sole pollinator of the Baobab tree in Africa , this tree is important to so many other wildlife it is called the "Tree of Life". The white, fragrant, night-blooming flowers of African baobab tree are pollinated by four kinds of epauletted fruit bats and a rousette bat.

Bat species in the photo is Epomophorus wahlbergi.
Photo credit: Bob/cannundrum.blogspot.com