How good are our wetlands at doing what they’re designed to do?
Stormwater wetlands are designed to assist in the management of flows, treatment of nutrients, and detention of sediments and toxicants in urban areas. They require major investment from Melbourne Water (MW) and associated Councils and need to be managed appropriately to ensure long term performance is maintained and the health of downstream waterways is protected.
This project aims to:
This is a collaboration with Melbourne Waterway Research-Practice Partnership (MWRPP) Project B2.
The literature review is nearing completion and toxicant screening has been carried out at 23 stormwater wetland sites. Initial results indicate that metals (Zn, Cu, Ni and Pb) as well as TPH and synthetic pyrethroid pesticides were commonly present in inlet sedimentation ponds. There was no correlation between toxicant concentration and wetland age. Further sampling will occur throughout other areas of each wetland (i.e. macrophyte, outlet zone), to understand if toxicants are accumulating in specific areas. Particle size analysis will be used to help understand this, and novel molecular tools will be developed to determine the impact of toxicants on microbial composition and function.
RMIT A3P: Kathryn Hassell, Claudette Kellar, Vin Pettigrove, Dan MacMahon, James Oliver, Michael Clark, Ana Miranda, Hung Vu, Monica Tewman.
UoM MWRPP: Chris Szota, Frederic Cherqui, Peter Poelsma, Mat Burns, Tim Fletcher, Rob James, Theo Perigaud, Darren Bos.
MW: Alison Rickard, Andrew Camenzuli, Birgit Jordan, Al Danger, Michael Flanagan, Rhys Coleman, Slobodanka Stojkovic.
Expected Completion: 2023
Acknowledgement of country
RMIT University acknowledges the people of the Woi wurrung and Boon wurrung language groups of the eastern Kulin Nation on whose unceded lands we conduct the business of the University. RMIT University respectfully acknowledges their Ancestors and Elders, past and present. RMIT also acknowledges the Traditional Custodians and their Ancestors of the lands and waters across Australia where we conduct our business.