Graeme Samuel has urged the Coalition and Greens to set aside grievances with the Albanese government’s new nature laws and support them, avoiding further delays in fixing a system that his landmark review found was broken.

The author of the 2021 review of the Environment Protection and Biodiversity Conservation (EPBC) Act issued a stern message to both sides as Labor braces for a political fight to deliver the long-awaited reforms.

Samuel reserved his strongest words for the Coalition, whose now leader Sussan Ley commissioned the review when she was environment minister in the Morrison government.

“I don’t know what’s going on at the moment,” the former competition watchdog told Guardian Australia.

“It frustrates me and it makes me a bit angry. What we are talking about here is

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