Regional ecosystem details for 9.12.19
| Regional ecosystem | 9.12.19 |
|---|---|
| Vegetation Management Act class | Least concern |
| Wetlands | Not a Wetland |
| Biodiversity status | No concern at present |
| Subregion | 4, (11.1), (7.5) |
| Estimated extent1 | Pre-clearing 41000 ha; Remnant 2021 41000 ha |
| Short description | Eucalyptus crebra or E. granitica +/- Corymbia citriodora subsp. citriodora +/- E. portuensis mixed woodland on igneous hills |
| Structure code | Woodland |
| Description | Mixed woodland of Eucalyptus crebra (narrow-leaved ironbark) or E. granitica (granite ironbark) +/- Corymbia citriodora subsp. citriodora (lemon-scented gum) +/- E. portuensis (white mahogany) +/- E. exserta (Queensland peppermint) +/- C. leichhardtii (yellowjacket). An open sub-canopy layer can occur and include canopy species, Melaleuca spp., C. abergiana (range bloodwood) and Lophostemon suaveolens (swamp mahogany). The open to mid-dense shrub layer includes Petalostigma pubescens (quinine), Acacia spp., Melaleuca spp., Grevillea glauca (bushman's clothes peg), Bursaria incana (prickly pine) and Xanthorrhoea johnsonii (grass-tree). The dense grassy ground layer is dominated by Themeda triandra (kangaroo grass), Heteropogon triticeus (giant speargrass), Arundinella setosa and Sarga plumosum (plume sorghum). Occurs on hills and rugged hilly ranges on acid and intermediate igneous rocks. Not a Wetland. (BVG1M: 13c). |
| Special values | 9.12.19: Old growth of this regional ecosystem is significant for a number of species including arboreal mammals. |
| Fire management guidelines | SEASON: Early dry season and storm time. Timing of early dry season burns will vary depending on seasonal conditions; it may sometimes commence as early as March. INTENSITY: Low, with occasional moderate. INTERVAL: 2-5 year intervals with longer unburnt patches. Fuel loads tend to reach a maximum after 2-3 years. Ensure burn programs occur after big wet season as fuel loads will be higher than average. INTERVAL_MIN: 2. INTERVAL_MAX: 5. STRATEGY: Burn less than 40% across the landscape in any year. Burning through the early dry season will produce a network of burns that will contain later fires. Fires will only gain in intensity as the dry season progresses. Grass composition can be affected by timing and intensity of fire. Occasional moderate fire will help to reduce overabundant trees that could potentially suppress ground layer vegetation. ISSUES: Leave areas of long unburnt vegetation to maintain a diversity of habitat for wildlife. |
| Comments | 9.12.19: This community is closely associated with 9.12.2 but is in areas with lower rainfall. Occurs in the south-east of the bioregion. Some logging of Corymbia citriodora and Eucalyptus portuensis. |
1 Estimated extent is from version 13 pre-clearing and 2021 remnant regional ecosystem mapping. Figures are rounded for simplicity. For more precise estimates, including breakdowns by tenure and other themes see remnant vegetation in Queensland.
