07/2555 - Operational Works - Drainage Stormwater Vegetation [As Published] · 142007.2555

Attunga Heights Rehabilitation Specification 9

5.4 ZONE 3: RIPARIAN ZONE

5.4.1 Existing Condition

This zone includes the ephemeral creek and its 10m vegetated buffer. The canopy is currently
dominated by Blue Quandong (Elaeocarpus grandis) and Umbrella Cheese Tree (Glochidion
sumatranum). The understorey is generally healthy, containing relatively few weeds although
some species such as Guava (Psidium guajuva) are present.

5.4.2 Target Community

This zone requires only minor rehabilitation activities. The objective is:

To control weeds and restore riparian rainforest within the creek corridor

5.4.3 Management Strategies

In order to meet the objective for Zone 3, the following management strategies are required.

Table 3: Strategies for Zone 3

 

 

 

Weed Management Planting Species Other Considerations
Treat weeds on creek banks, | Replant areas cleared of | Where required the following | None
taking care to maintain bank | weeds with native understorey | species scheduled in
integrity. and occasional overstorey | Attachment 2 are to be
elements, planted. No one species is to
make up more than 20% of a
planting mix.

 

 

 

 

5.5 ZONE 4: UNDERSTOREY MANAGEMENT ZONE

5.5.1 Existing Condition

Floristically and structurally this zone is continuous with and is similar to Zone 1 with the
primary exception being the ground and lower shrub layers are utterly dominated by exotic
species. Weeds that are abundant in this area include Black-eyed Susan (Thunbergia alata),
Asparagus fern (Asparagus speringia), Easter cassia (Senna pendula), Mother-of-millions
(Bryophyllum delagoense), Mother-in-laws tongue (Tradescantia fluminensis) and Micky Mouse
plant (Ochna serrulata).

5.5.2 Target Community

As the community is continuous with that in Zone 1 the objective for both areas are similar. The
specific objective for Zone 4 is:

To remove weeds and facilitate the ongoing recruitment and establishment of
predominantly rainforest species including appropriate hollow developing trees

 

Chenoweth EPLA 078103_Rehab_12_12_07.doc Dec ‘07