Dieback is a major threat to the biodiversity values of the Park and the City of Busselton/ Meelup Regional Park Management Committee have made the management of dieback a high priority.

Dieback is an introduced disease caused by the plant pathogen Phytopthera cinnamomi.  Phytopthera kills susceptible plants such as jarrah, banksia and grass trees by attacking their root systems and is a major threat to the diversity of south-west WA flora. The movement of infected soil, plant material or water containing its spores, particularly under warm, moist conditions, will spread the disease into uninfected areas.

Dieback is considered to be a significant threat to the native vegetation of the park, due to the number of susceptible species. Dieback mapping carried out in the Park in February 2017 showed that 25.5% of the Park is dieback infested and 61% uninfested (with the remaining 13.5% as unprotectable). The mapping showed problem areas to occur in the waterways of the park (all waterways are infected) in the area between the Dunsborough townsite and Meelup Beach Road.

Detection of Phytophthora dieback is usually based on visual assessment of vegetation condition and presence of symptoms. A higher level of certainty is provided with analysis of soils to detect the pathogen, however sampling can fail to detect the pathogen in clearly infected areas. An area is said to be infected if either symptoms or pathogens are detected.

Meelup Regional Park Phytophthora Occurrence Map 022017

Managing Dieback in the Park

Meelup Regional Park dieback stationThe issue of dieback poses a serious threat to the park's conservation values. To prevent the spread of the disease, it is critically important to manage access in the park.

The City of Busselton (with support from CoastWest) has recently installed seven dieback hygiene stations in locations where walkers are entering dieback free areas. Walkers are encouraged to stop and clean their boots to remove any soil which may contain dieback spores to prevent the spread of dieback in the Park.

Management measures by the City of Busselton to help prevent the spread of dieback through the park include:

  • A dieback boundary survey every five years; Dieback Interpretation Report (3.7MB)
  • Susceptible vegetation in priority uninfested areas is carried out every three years;
  • All new trails are surfaced with limestone;
  • Installation of dieback markers to raise visitor awareness of dieback in the park;
  • Reducing water pooling on firebreaks;
  • Phosphite treatment of Dieback buffer areas;
  • Treatment of infected trees by injecting and foliar spraying;
  • Ensuring that any works in the park adhere to management guidelines; and
  • Earthworks are conducted in the dry season (where possible).

caring for meelup park icon


You can help preserve this special place in the following ways:

Stay on designated trails  |  Do not light fires in the park  |  Park in designated areas  |  Leave your pets at home  |  Use the bins and toilets provided  |  Do not dump garden waste  |  No Camping


Telephone: (08) 9781 0444
Email: city@busselton.wa.gov.au