This video from Australia says about itself:
12 February 2015
Megabats are very important pollinators and seed disperses of many native plants including Eucalyptus, figs, bush apples (Syzygium spp.), bush plums (Terminalia spp.), paperbarks, guerrillas, and fruits of many palm species. The seeds of some plant species (particularly those with white and green fruits) may only be dispersed by Megabats, meaning that these plants rely on Megabats in order to successfully reproduce.
It has been estimated that a single Megabat can dispense up to 60,000 seeds in a single night.
Megabats are also important for nutrient regeneration and nutrient cycling within the ecosystem.
Not only do they provide large quantities of fertilizer to the system, but they create gaps in the canopy which enables other plants to compete more effectively. For instance, some trees shade ground-dwelling plants and shrubs, preventing them from obtaining nutrients, light and rain. By creating a gap in the canopy, Megabats enable these plants to obtain more sunlight, rainfall and nutrients, thus promoting a more diverse plant community, with cascading benefits for many other animals and plants.