Abstract
Summary A nursery experiment revealed that the growth of Eucalyptus tetrodonta seedlings is significantly inhibited by unsterilised monsoon rainforest surface soil, and that this inhibition can not be eliminated by the addition of fertiliser. This result is in marked contrast to similar previously published experiments performed on two rainforest tree seedlings. (Bombax ceiba and Sterculia quadrifida) and Eucalyptus nesophila. The results of this study suggest that the observed high densities of E. tetrodonta seedlings and saplings on a site formerly occupied by monsoon rainforest on Elcho Island could only have established once the rainforest soil biota had been killed. One possible cause of soil sterilisation is wildfire.
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