The Extinction Rebellion member was charged with one count of destroying or damage Commonwealth property, after demonstrators chalk sprayed the walls of the Minister for the Pacific's Gungahlin office.

The protestors claim to have targeted the Liberal senator over his failure to support Pacific Island countries facing the effects of climate change.

The woman arrested during Monday's protest, Cate Adams, said the Minister for the Pacific needed to lead, or get out of the way.

Senator Seselja said the Liberal-National government was focused on delivering results, not rhetoric, when it came to climate policy.

He said Australia had reduced emissions faster than the OECD average between 2005-2019 and was on track to beat the 2030 commitments made in 2005.

"What we hear from our partners in the Pacific is that what they need most is direct access to affordable climate finance," Senator Seselja said.

"We are listening to our neighbours, doubling our previous $1 billion climate finance commitment to $2 billion from 2020 - 2025, including $700 million for the Pacific."

Ms Adams said the Coalition government and Senator Seselja had proved themselves not only incapable but unwilling to do their job.

"From having fossil fuel giant Santos sponsor the Australian pavilion at the COP26 international climate talks, to the senator's appalling voting record against even the mildest climate emergency mitigation measures," she said.

"What is happening now to the Pacific islands is a warning to the rest of the world.

"We demand leaders act now on the climate and ecological emergency. Anything less than immediate and drastic action is denial, ecocide, mass murder."

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Extinction Rebellion has held protests in major cities throughout the Glasgow climate summit, including a march in Canberra that shut down Lonsdale Street and a demonstration which blocked Commonwealth Bridge at peak hour.

Thousands of people have taken to the streets in Scotland to protest a lack of global action on climate change, as COP26 enters its second week of talks.

Prime Minister Scott Morrison returned home from the summit after two days of leaders' meetings, without increasing Australia's 2030 emissions reduction targets.

Ms Adams has received bail and will appear in court later this month.

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