A prescribed burn conducted on December 18, 2024, in the Walpole-Nornalup National Park, Western Australia, has resulted in the collapse of over 150 ancient Tingle and Karri trees, according to local researchers and conservation groups.
This figure starkly contrasts with the Department of Biodiversity, Conservation and Attractions (DBCA)’s claim that only one “giant” Tingle tree was lost during the operation.
The burn, carried out in the “Giants East” forest block near the famed Valley of the Giants Treetop Walk, aimed to reduce fire risks but has instead caused widespread destruction.
Local environmental science student Uralla Luscombe-Pedro surveyed the area and estimated that around 180 mature trees — including red tingle, yellow tingle, karri, and marri species — had fallen across an 85-hectare zone.
She described the scene as “severe and damaging”, with fallen branches and burned tree canopies scattered across the forest floor.
Clusters of trees had collapsed due to cumulative fire damage exacerbating their structural vulnerabilities.
Tingle trees are particularly susceptible to fire because of their shallow roots, fibrous bark, and unique growth patterns.
Studies indicate that these forests have naturally low flammability when left unburnt for extended periods.
Conservationists argue that repeated burns have weakened these trees over time, making them more prone to collapse.
The Walpole-Nornalup National Park Association (WNNPA) expressed shock at the burn’s outcomes.
Dr David Edmonds of WNNPA highlighted that similar issues arose during a 1997 trial burn in the same area, which led to the collapse of at least 30 trees — an outcome deemed unacceptable at the time.
The association is now calling for an immediate halt to another planned burn in nearby Tingle forests this season.
They also advocate for increased pre- and post-fire monitoring, meaningful ecological outcomes in burn prescriptions, and an independent review of prescribed burning practices.
Jason Fowler, Senior Campaigner for the WA Forest Alliance (WAFA), criticised the DBCA’s approach as outdated and ill-suited to current climate conditions.
He emphasised that Western Australians strongly support forest conservation and urged the government to overhaul its prescribed burning program to prevent further destruction of fire-sensitive ecosystems like Tingle forests.
The DBCA defended its methods in a January statement, claiming measures such as applying fire retardant to tree trunks were implemented to protect large trees on the burn perimeter.
The department described the operation as a success, asserting that approximately 300 trees were safeguarded.
However, critics argue these measures failed to address core ecological concerns or prevent significant tree loss.
This incident has reignited debates over prescribed burning practices in Western Australia amid worsening climate conditions.
The region has experienced two consecutive years of severe drought — referred to as the “Great Browning” — which has further stressed shallow-rooted species like Tingle trees.
Conservationists warn that continuing with outdated fire management strategies risks irreparable damage to some of Australia’s most iconic old-growth forests.
As public pressure mounts, conservation groups, scientists, and local residents are demanding accountability from the WA government and immediate reforms to protect biodiversity and community safety from future fire mismanagement.