The study states that models could then accurately estimate animals found in areas destroyed by fire.
Project leader, Lily Van Eeden, from the University of Sydney said the research was the first continent-wide analysis of animals impacted by the bushfires.
“Other nations can build upon this research to improve understanding of bushfire impacts everywhere,” she said.
The total includes animals displaced because of destroyed habitats and which now face a lack of food and shelter or the prospect of moving to already occupied habitats.
Researchers said the destruction will see some species become extinct before their existence is even recorded.
“We don’t even know what we are losing,” said Chris Dickman, Professor in ecology at the University of Sydney.
“These were species that were here and now they have gone… It’s almost too tragic to think about,” he said.
After years of drought made the Australian bush unusually dry, the country battled one of its worst-ever bushfire seasons from September through March, causing 34 human deaths and nearly 3,000 homes lost.