Average a total biomass b above-ground biomass c below-ground biomass of two invasive lianas, Araujia sericifera, Anredera cordifolia, and two native lianas, Cissus antarctica and Pandorea pandorana grown under different competition treatments: alone (white bars), with a conspecific (grey bars) and with G. semiglauca (black bars). Letters above each group of bars are results from Tukeys multiple comparison tests where different letters represent significant differences within each set of bars.