India, Jan. 8 -- Burnt species include the long-footed potoroo, Kangaroo Island's glossy black-cockatoo and the Spring midge orchid

Images of desperate, singed koalas in blackened landscapes have come to symbolise the damage to nature this bushfire season. Such imagery has catalysed global concern, but the toll on biodiversity is much more pervasive.

Until the fires stop burning, we won't know the full extent of the environmental damage. But these fires have significantly increased the extinction risk for many threatened species.

We estimate most of the range and population of between 20 and 100 threatened species will have been burnt. Such species include the long-footed potoroo, Kangaroo Island's glossy black-cockatoo and the Spring ...