Appendix F - bushfire attack level assessment report · MCU25/0022

DNRME provides the following Description and recommended fire guidelines for the vegetation communities
present.

 Regional Ecosystem         Description                               Fire Guidelines
                            Open-forest generally with Eucalyptus     SEASON: Summer to winter.
 RE 12.11.3                 siderophloia and E. propinqua +/- E.
 Of Least                   microcorys, Lophostemon confertus,        INTENSITY: Plan for low to moderate. Unplanned occasional
                            Corymbia intermedia, E. biturbinata,
 Concern                    E. acmenoides, E. tereticornis, E.
                                                                      high intensity wildfire will occur.

                            moluccana, Angophora leiocarpa,
                                                                      INTERVAL: 4-8 years maintains a healthy grassy system. 8-20
                            Syncarpia verecunda with vine forest
                                                                      years for shrubby elements of understorey.
                            species and E. grandis or E. saligna in
                            gullies. Eucalyptus pilularis and E.
                            tindaliae sometimes present e.g. mid      STRATEGY: Aim for 40-60% mosaic burn. Needs disturbance
                            D'Aguilar Range, Conondale Range.         to maintain RE structure (eucalypt overstorey with open
                            Occurs predominantly on hills and         understorey of predominantly non-rainforest species). Any
                            ranges of Palaeozoic and older            moist sclerophyll that is relatively open with a mixture of
                            moderately to strongly deformed and       grasses and shrubs should be a priority for fire management
                            metamorphosed sediments and               to retain RE structure.
                            interbedded volcanics
                                                                      ISSUES: Frequent fire is needed to maintain understorey
                            Vegetation Hazard Class (VHC) 9.2         integrity, keeping more mesic species low in the profile of
                            17.2t/ha Total Available Fuel Load        the understorey so that other species can compete. A grassy
                            (State Default Value)                     system is especially important for species such as the eastern
                                                                      bristlebird and its habitat. It is essential that wildfires are not
                                                                      the sole source of fire in this ecosystem. High intensity fires
                                                                      occur periodically through time, however frequent low to
                                                                      moderate intensity fires will create the disturbance required
                                                                      to keep the understorey diverse. A follow-up burn soon after
                                                                      a high intensity wildfire can be considered to reduce
                                                                      germinating mesic species. This 'of concern' RE may contain a
                                                                      high number of rare and threatened plant species (e.g.,
                                                                      Acomis acoma, Corchorus cunninghamii, Marsdenia coronata
                                                                      and Sophora fraseri) which require appropriate fire
                                                                      management.




Table 2. Regional Ecosystem Description and Fire Guidelines


This assessment is not based on any assumptions regarding prescribed burning with temporary hazard
reduction benefits; and has to be based on fuel levels reaching a long term maximum stable state, coinciding
with ignition under worst case foreseeable fire weather conditions.

4.1      Fire History and Frequency

This study found no evidence of fire in the area. Occurrence of fire is anticipated, potentially coinciding with
full potential fuel accumulation and worst case fire weather conditions.




Report compiled by Bushfire Risk Reducers for Mr A. Wittaker, February 2023                                    Page 12