Conservation plans help boost threatened mammals, scientists find

While some species have declined by more than a third overall, where conservation measures are in place they have increased by 46%

Populations of some Australian mammals declined by more than a third over two decades, but sites with clear conservation management saw improvements in their populations of 46%, according to new research.

The figures are the first tranche of data in Australia's Threatened Species Index for mammals, which combines data from monitoring programs across the country to track trends in threatened species populations.