A rare native marsupial crucial to the survival of Queensland’s tropical ecosystem is facing a deadly decline, a new study reveals.

The five-year World Wildlife Fund (WWF)-Australia-funded project which tracked the northern bettong found a 70 per cent decline in the marsupial’s population in the past 30 years.

Predators such as poor land management, feral cats, and fire, are known threats to the approximately 2,500 northern bettongs left in the wild.

The State Government says they will continue to work closely with WWF-Australia and other organisations to protect the remaining population.