Dune works in Kirra beach, Queensland, to maintain the beach amenity and reinforce a buffer to the shoreline, while also reinstating native plant communities along the dunes for stabilisation and the conservation of biodiversity. The site was maintained for a period of twelve months post-planting to promote good growth of installed plants, prevent weed incursion, ensure dune stability through increased native vegetation cover and assist natural regeneration of dune species. Planting survival rates at five months varied mainly due to mobile sand and anthropogenic disturbance, while at twelve months the Beach Spinifex densities approached densities expected for a naturally established frontal dune. Overall, the project met and exceeded requirements.
Dune replanting or construction
Method: Revegetation
Rehabilitation - method: Infill planting cells placed between frontal dune and existing vegetation; weed control
Revegetation - species: Spinifex (Spinifex hirsutus) 65%; Beach Bean (Canavalia rosea) 5%; Goats Foot Convolvulus (Ipomoea pes-caprae) 15%; and Vigna (Vigna marina) 15%.
Approach
Dune replanting or construction
Geographic context
Open coast
Organisation responsible
The Department of Environment and Resource Management (DERM) and Gold Coast City Council (GCCC)
Primary objective
coastal protection and habitat restoration
Length of coastline targeted (m)
1515
Area of project (ha)
1.8
Date of completion
2011
Source of project funding
Department of Environment and Heritage Protection