Dr Matthew Brookhouse, a lecturer at the ANU's Fenner School of Environment and Society, first noticed dieback in snow gums a few years ago. He went up to Perisher Valley to investigate reports of localised dieback of snow gums.
"When we arrived in Perisher, the scene was shocking. What I saw there was not just one or two trees dying, but a good portion of the main valley in Perisher was in decline," he said.
Dr Brookhouse, then spent some time travelling around the Snowy Mountains, trying to figure out what was going on.
"It became evident to me very quickly that we had quite a substantial, very widespread and in some cases very, very severe dieback event playing out across the mountains," he says.