08/09/2026
Australia's forests face threats that don't respect tenure boundaries - fire, invasive pests, disease and climate are among them.
This ABC story on polyphagous shot-hole borer is another reminder of why maintaining Australia's forest-management and biosecurity capability matters.
The beetle has more than 400 recorded host species and poses potential risks not only to horticulture and Perth's urban tree canopy, but also to Australia's native forests. Scientists are warning that early detection will be critical if it begins moving beyond its present containment area.
Importantly, eradication in WA has already been judged technically infeasible. The response has therefore shifted to surveillance, containment, integrated pest management, research and building the skills needed to manage the pest over the long term.
There is a broader lesson here.
Protecting forests is not achieved simply by drawing a boundary on a map and calling an area "protected". Healthy forests require monitoring, access, skilled people, research and the capacity to intervene when threats emerge.
Whether the threat is fire, pests or disease, passive management is not a forest-health strategy.
And as governments confront multiple biosecurity emergencies simultaneously, maintaining enough trained people and operational capability to deal with them must be treated as essential national infrastructure.
With the nation's biosecurity experts tied up managing the bird flu outbreak, there are concerns that attention has been diverted from the destructive shot-hole borer beetle.