One of the world's leading tropical biologists says clear felling of forests on Papua New Guinea's controversial Special Agricultural and Business leases is likely to have profound impact on PNG's environment.
As you heard earlier in the program, logging on SABLs has pushed PNG's log exports into record territory.
In 2011, 650,000 cubic metres of logs were exported from SABLs.
A prominent scientist in tropical biology says the environmental impact of this sort of logging is very significant.