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

Attunga Heights Rehabilitation Specification 17

7.0 REVEGETATION

 

7.1 PLANT SUPPLY

7.1.1 Size and health

Planting stock will be:
e Healthy and display active signs of growth. Plants displaying yellowing, disease, root
curling or that are root bound, or with any weeds in the container will be rejected.
e Weed and pest free. This must be certified in writing by the supplier and the certificates
made available to council upon request.
e A minimum of 20cm in height for tubestock and a minimum of 40cm tall for supetubes.
e Hardened off.

It is recommended that planting stock will be provided in 125mm tubes. All rainforest canopy
species with the exception of fast growing pioneers will be planted in Supertubes (8” long).
Rainforest understorey and pioneer species are suitable for planting in tubestock. The rationale
behind the utilisation of supertubes for rainforest canopy species is that plants of this size
establish rapidly, thereby speeding the rate at which canopy closure is achieved.

7.1.2 Handling

Plants should be transported to site in a covered vehicle. Plants should be planted on the day of
transport to site. Planting will not be carried out during excessively hot or dry periods that are
likely to affect the survival of tubestock.

7.1.3 Species and Provenance Substitutions

Plant species have been carefully selected for their suitability for rehabilitation of each area. All
requests for changes and substitutions shall be assessed by the Restoration Ecologist and
approved or rejected in writing by the Project Manager.

7.2 PLANT SELECTION

7.2.1 Species selection

Generally, species have been selected that will rapidly establish canopy cover, thereby
suppressing weeds and re-establishing ecological processes that will facilitate the natural
recruitment of native shrub and ground layer species.

Species for each zone have been selected by firstly identifying the vegetation community to
which that zone belongs and secondly by identifying the missing elements (e.g. species and
structure) from that community. This has been achieved through fieldwork that provided the

 

Chenoweth EPLA 078103_Rehab_12_12_07.doc Dec ‘07