Moore Reserve Wetland

Client name: Kogarah City Council
Duration: 2010 – 2012
Location: Kogarah, NSW

 

DFE conducted a site assessment on:

  • Aquatic and fringing vegetation for species, cover, health
  • Weeds for presence and priority for control
  • Sediments for location in the wetland, quantity and quality
  • Water quality
  • Macro invertebrates study and review of existing data

On completion DFE made recommendations to deal with the excess sedimentation, and addressed the die-off of aquatic plants and a reduction in fauna diversity, particularly of waterbirds.

DFE were engaged to fulfil some of the recommendations in our report.  DFE retrofitted the Water Quality Control Device, so it could operate at different water level depths, and be able to drain faster. To supply and plant out advanced sized aquatics and to place bird netting over a majority of the plantings. Before DFE began there was approximately 10% vegetation cover in areas where macrophytes were supposed to be growing. On completion of works, DFE successfully restored the wetland to greater than 90% cover of macrophytes. Success was due to understanding the conditions required for a wetland to function correctly, to improve the design in a cost effective manner if there are limitations e.g. fixing the water level control device and the utilisation of DFE’s own trademarked AquaPots. Aquapots are full size aquatic macrophytes grown up in 8 inch pots. They have an advanced and established root system that give them the advantage over normal tubestock.

These are:

  • Bird predation is limited and will not affect plant establishment – an advanced root system allows them to be planted into wetlands that have minimal or no water level control
  • can be flooded for long periods of time just after planting and survive
  • the wetland establishment period has been reduced
  • Looks like an existing wetland within the first growing season
  • Tough, hardy and robust and can survive in changing and challenging conditions