Regional ecosystem details for 9.12.12
| Regional ecosystem | 9.12.12 |
|---|---|
| Vegetation Management Act class | Least concern |
| Wetlands | Not a Wetland |
| Biodiversity status | No concern at present |
| Subregion | 2, (5) |
| Estimated extent1 | Pre-clearing 162000 ha; Remnant 2021 161000 ha |
| Short description | Eucalyptus crebra and Corymbia erythrophloia +/- E. microneura open woodland on igneous rocks |
| Structure code | Open Woodland |
| Description | Open woodland of Eucalyptus crebra (narrow-leaved ironbark) and Corymbia erythrophloia (red bloodwood) +/- E. microneura (Georgetown box) +/- Corymbia spp. Scattered canopy species and Terminalia sp. can occur in the sub-canopy. The mixed shrub layer varies from sparse to open and can includes juvenile canopy species, Vachellia bidwillii (corkwood wattle), Carissa lanceolata (currantbush), Petalostigma banksii (smooth-leaved quinine), Denhamia cunninghamii (yellowberry bush) and Atalaya hemiglauca (whitewood). The ground layer is grassy and dominated by Heteropogon contortus (black speargrass), Themeda triandra (kangaroo grass) and Aristida spp. Occurs on undulating hills to hills of acid and intermediate igneous rocks. Not a Wetland. (BVG1M: 13c). |
| Protected areas | Canyon RR |
| 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 | 9.12.12: Occurs in low hills adjacent to the Newcastle Range in the west of the bioregion. Degraded by grazing pressure. Prone to invasion by Themeda quadrivalvis. |
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.
