Seven climate change protesters have been arrested in Brisbane after blockades on Monday morning but the activist group still plans to disrupt traffic again within days.

The Extinction Rebellion group, responsible for a previous Victoria Bridge protest and last week's intersection blockades, stopped traffic at one junction and tried the same at another on Monday.

About 25 activists were involved in the protest, which started about 7.45am, and there were almost as many police watching from the street or from marked vehicles.

Two men and five women, aged 18-56, were arrested and charged with a mixture of offences including public nuisance, disobeying police move-on directions and impeding the flow of traffic.