Officers have increased patrols through the reserve and installed fencing to encourage people to stay on the tracks.
City of Stirling Parks and Reserves manager Ian Hunter said officers had uncovered empty alcohol bottles as well as evidence of drug use.
Mr Hunter said officers were actively engaging with the public wherever possible to educate them on the ecological significance of the reserve and vulnerability of the flora and fauna in the area.
‘We have also been exploring additional options by which to mitigate public impact on the swamp,’ he said.
‘This includes the possible installation of security cameras that will allow vandals to be easily identified, road sign message boards, and further increasing our presence after dusk when people are likely to be in the reserve.’
The City has received more than 100 reports relating to incidents within the protected bushland since July 2013.
Mr Hunter said there was clear evidence of trampling and damage to native vegetation in the area, sometimes including the removal of plants.
‘The main problem seems to be the clearing of vegetation to allow for the construction of bicycle paths and jumps,’ he said.
‘Often we come across quite extensive holes dug in the ground as a result of attempts to build dirt jumps and this is having a real impact on the reserve and its natural habitat.’
To report an incident, residents can call City rangers on 9205 8555.
The Stirling Times last week received a letter reporting drug use and vandalism in Star Swamp.