Battling Invasive Weeds to Save a Rare Macadamia

The Bulberin Nut (Macadamia jansenii) is one of four threatened Macadamia species endemic to Australia, with wild populations found exclusively within Bulburin National Park. The conservation of this rare species is critical, as it faces multiple threats including pest animals, invasive weeds, disease, and altered fire regimes. To support the species' survival, efforts are being made to mitigate these threats and establish insurance populations on Traditional Owner managed land.

As part of this conservation initiative, BMRG Project Officer, Ben Hoekstra, provided weed control training to Gidarjil Development Corporation rangers at Thornhill Station on the 5th of March. A total of twelve rangers participated in the training, gaining hands-on experience in the correct methodologies for treating and managing the invasive Cat's Claw Creeper vine. This invasive weed, scientifically known as Dolichandra unguis-cati, is a rapidly growing climbing vine that spreads aggressively, affecting all plant layers within the forest ecosystem. Its ability to proliferate both vertically and horizontally makes it a significant threat to native vegetation, requiring strategic management techniques to control its spread effectively.

The training was conducted in preparation for upcoming weed control activities within Bulburin National Park, where the rangers will apply their knowledge to combat invasive species threatening the habitat of Macadamia jansenii. In addition to weed management, the Gidarjil rangers also received education on biosecurity threats, including the impact of pests and diseases on the fragile ecosystem of Bulburin National Park. They were introduced to the necessary protocols and preventive measures designed to mitigate these risks, ensuring the continued health of the environment.

This project is made possible through funding from the Australian Government's Saving Native Species Program, which supports initiatives dedicated to preserving Australia's unique biodiversity. By implementing strategic conservation efforts, training local rangers, and addressing key threats to the species, this initiative is a significant step toward securing the future of the Bulberin Nut. Through ongoing collaboration and environmental stewardship, the resilience and recovery of Macadamia jansenii remain a priority in preserving Australia’s rich natural heritage.