A Bonny Hills resident says he is concerned about the treatment of the environment at Spooneys Bay, Bonny Hills.
Phil Rowan said he has witnessed the progressive removal of vegetation from the reserve over the last few years.
He said over time walking paths have widened in the littoral rainforest areas so that four wheel drive vehicle can fit through.
Mr Rowan believes council is over poisoning the vegetation and is worried about its impact on the coastal littoral rainforests.
A spokesperson from council said staff have sprayed exotic grasses that were invading the littoral rainforest from the edges, to stop their spread further into the rainforest.
"This has been taking place regularly for the past 10 years," he said.
The grasses pose a threat to native regeneration.
Council staff have also sprayed some bitou bush along the front of the cliff faces, however the spokesperson said they have not undertaken any other vegetation clearing or removal.