North-West Bay is dotted with traditional mooring chains. These cause scour, destabilise the sediment and prevent the growth of seagrass. At least 12 of these moorings will be replaced with Environmentally Friendly Moorings (see link below). The moorings should be replaced by the end of 2022, then the first half of 2023 will be spent monitoring the outcome. No active seagrass restoration will occur, however, it is expected the seagrass will re-establish on its own and thereby re-stabilise the sediment. There will also be some consideration into the potential for carbon sequestration as a result of the seagrass restoration. The project is funded through NRM by a grant from the federal DAWE Fisheries Habitat Restoration (FHR) Program and significant in-kind from the CSIRO. No permits are required as the moorings are simply being replaced. Marine Safety Tasmania issues permits for the placement of moorings in the first place, which are then leased by individuals.
Seagrass
Method: Other - removal of traditional chain moorings and replacement with environmentally friendly moorings. No permits are required as the moorings are simply being replaced. Marine Safety Tasmania issues permits for the placement of moorings in the first place, which are then leased by individuals. The moorings to be replaced were chosen based on individual leaseholders volunteering. However, not all moorings that were volunteered were considered suitable, due to factors like the size of vessel to be moored, the depth of the water, the proximity of the mooring to other moorings/vessels (in order to lower the risk of collision in the event the mooring came loose).
Approach
Seagrass
Geographic context
Bay
Organisation responsible
NRM South
Primary objective
Habitat restoration
Coastal hazard
Other
Asset vulnerable
Natural
Date of completion
Jun-23
Cost ($AUD)
$300,000+
Source of project funding
Federal government, Research grants
Project approvals needed
None