Karamu (Coprosma Robusta) is the perfect Coprosma species to have your revegetation project.
It grows very fast so establishes well in the first few years with it's vibrant dark green leaves.
It prolifically fruits in autumn with orange berries which are devoured by Tui and Kereru alike and are a very important food source.
This helps dispersal of these seeds to build up other regenerating areas but also brings in seeds from larger forest trees.
I'd recommend this plant for every revegetation project given it's versatility.