Cyclone Gabrielle exposed the risks of forestry slash. New research suggests little has changed

Mon, 11 May 2026 22:59:58 +1000

Andrew Pam <xanni [at] glasswings.com.au>

Andrew Pam
<https://theconversation.com/cyclone-gabrielle-exposed-the-risks-of-forestry-slash-new-research-suggests-little-has-changed-282129>

"When Cyclone Gabrielle tore through New Zealand’s Tairāwhiti region in 2023,
it left behind more than silt and floodwaters.

Rivers were choked with forestry debris, beaches littered with logs, and homes,
bridges and farmland buried under tonnes of forestry slash swept down from
hillsides.

The scale of the impacts – to infrastructure, livelihoods, ecosystems and to
Māori kaitiakitanga (guardianship), and the loss of life – triggered widespread
public outrage, with a ministerial inquiry launched soon after.

This led to new rules requiring foresters to better manage harvest debris on
steep slopes and reduce the risk of slash being swept away in floods.

Now, the rulebook is being rewritten again, with the government proposing
changes to the National Environmental Standards for Commercial Forestry
(NES-CF).

This would allow foresters to leave more slash in areas considered lower risk.

Detailed government guidance on managing slash risk is still being developed,
in a process which will limit opportunity for public input. At the same time,
the reforms curtail councils’ ability to impose tougher restrictions to address
the risks of slash.

This all points to an obvious question: have Gabrielle’s lessons for forestry
management been learned? Our newly published research suggests that, even
before these latest policy changes, they have not."

Cheers,
       *** Xanni ***
--
mailto:xanni@xanadu.net               Andrew Pam
http://xanadu.com.au/                 Chief Scientist, Xanadu
https://glasswings.com.au/            Partner, Glass Wings
https://sericyb.com.au/               Manager, Serious Cybernetics

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