It's not just Victoria's iconic mountain ash trees at risk – it's every species in their community
- Written by David Lindenmayer, Professor, The Fenner School of Environment and Society, Australian National University

When we think of extinction, we think of individual species. But nature doesn’t operate like that. Entire communities and even whole ecosystems are now so compromised they could be lost entirely. Australia now has about 100 ecological communities at risk.
One of those is the iconic Mountain Ash (Eucaly...