how long does it take a rainforest tree to grow
âThus, from the proportion of animal-dispersed trees we can estimate how complex the forestâs ecological web has become.â. Animals are key to the successful regeneration of cleared areas and, typically, 80% of the tree species in a mature tropical rainforest are animal-dispersed.The researchers found that it took just 65 years for a forest to recover to this level.ative species that are unique to the Atlantic forest have been isolated over the years into separate plots of forest. As a result, their seeds take a long time to disperse to protected areas. âIf endemic species do not germinate and grow, the forest cannot recover fully,â says Marques.