Koalas thrive in restored Australian forest after 30 years
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In 1994, Steve and Terri Irwin purchased 1,416 hectares of land in Queensland, Australia, naming it Ironbark Station, with the goal of restoring habitat for koalas.
The Irwins planted 44,000 eucalyptus trees, which provide food and shelter for the marsupials, and worked to remove invasive plants that hindered wildlife movement.
Research in southeastern Queensland showed that koala populations depend on both the amount of forest and how well forest patches connect, as koalas avoid isolated areas and face increased danger when crossing open spaces. After Steve Irwin’s death in 2006, the conservation work continued, expanding to include a network of protected properties covering over 182,100 hectares in Queensland through Australia Zoo and Wildlife Warriors.
This long-term project demonstrates that successful ecological restoration requires time, continuous management of threats, and maintaining connections between forested areas. The Irwins’ initial planting of eucalyptus trees has become the foundation for a much larger conservation effort, showing the importance of long-term commitment to habitat restoration for vulnerable species. The project also revealed that eucalyptus trees can absorb gold from underground deposits, a curiosity noted in the article.
