Invasive plant species present significant challenges to ecosystems, and one such species causing concern in southeast Queensland is the Camphor laurel (Cinnamomum camphora). Native to China and Japan, this evergreen tree was introduced to Australia in the early 1800s and quickly became a popular choice for providing shade and shelter in parks and schools. However, it has spread far beyond its ornamental roots, dominating areas like the Currumbin Eco-Parkland and posing a threat to local biodiversity.

What Makes Camphor Laurel a Problem?

Camphor laurel is highly adaptable, thriving in disturbed areas and rapidly producing seeds that are spread by frugivorous birds. Its wide canopy and extensive root system not only outcompete native vegetation but also lead to soil erosion, especially along stream banks. As a result, the tree forms dense monocultures that hinder the regeneration of native species, reducing biodiversity and disrupting local ecosystems.

Currumbin Eco-Parkland, a site home to threatened plant communities, native flora, and endangered fauna, is particularly vulnerable to this invasion. The presence of camphor laurel is actively inhibiting the growth of native plants and, in turn, the survival of local animal species, including those dependent on specific native food sources.

Managing the Invasion

Queensland’s commitment to rehabilitating the Currumbin Eco-Parkland includes addressing the camphor laurel threat. The aim is to enhance biodiversity, restore native habitats, and improve resilience against future ecological pressures. Various management strategies have been identified, based on decades of experience in controlling camphor laurel in regions like northern NSW:

1. Clear and Replant: This method involves removing camphor laurel and replanting with native species. While it offers quick restoration, it comes with a high cost and the risk of destabilising stream banks.
2. Do Nothing: Although this approach incurs no immediate cost, its success in balancing camphor laurel with native vegetation is uncertain.
3. Camphor Conversion: This strategy focuses on treating camphor laurel trees and other weeds to promote the natural regeneration of native flora, providing a balanced and sustainable solution.

The Way Forward

By implementing effective management practices, the Currumbin Eco-Parkland can regain its natural vitality. The removal of camphor laurel and the restoration of native habitats will support the recovery of local flora and fauna, ensuring that the park remains a vibrant and thriving ecosystem for future generations.

For more information on how camphor laurel management is being tackled at Currumbin Eco-Parkland, click here.