Regional ecosystem details for 9.12.18
| Regional ecosystem | 9.12.18 |
|---|---|
| Vegetation Management Act class | Least concern |
| Wetlands | Not a Wetland |
| Biodiversity status | No concern at present |
| Subregion | 4, 2.9, (2), (5) |
| Estimated extent1 | Pre-clearing 22000 ha; Remnant 2021 22000 ha |
| Short description | Eucalyptus crebra or E. exilipes +/- Corymbia citriodora subsp. citriodora +/- C. peltata open woodland on granites with thin sand sheet |
| Structure code | Open Woodland |
| Description | Open woodland to woodland of Eucalyptus crebra (sens. lat.) (narrow-leaved ironbark) or E. exilipes (fine-leaved ironbark) +/- Corymbia citriodora subsp. citriodora (lemon-scented gum) +/- C. peltata (rustyjacket) +/- C. trachyphloia (brown bloodwood) +/- Callitris intratropica (cypress pine). A distinct sub-canopy layer including E. shirleyi (silver-leaved ironbark), Alphitonia excelsa (soapbush) and Bursaria incana (prickly pine) can occur. The shrub layer is a mid-dense to sparse and includes Denhamia spp., Acacia spp., Petalostigma banksii (smooth-leaved quinine), Persoonia falcata and Xanthorrhoea johnsonii (grass-tree). The ground layer is sparse and dominated by Themeda triandra (kangaroo grass), Heteropogon contortus (black speargrass) and sometimes Triodia pungens (spinifex). Occurs on undulating hills and rises with a thin sandsheet overlying granite. Not a Wetland. (BVG1M: 13c). |
| Protected areas | Blackbraes NP |
| Special values | 9.12.18: Habitat for the vulnerable species Acacia crombiei. |
| 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. Cypress is fire sensitive; adults can die if crown is scorched. Protect from fires until plants old enough to replace seed pool. However, cypress can cause vegetation thickening in absence of fire or in heavily grazed areas. |
| Comments | 9.12.18: Occurs on low granite hills east of Chudleigh Plateau in the south west of the bioregion. |
1 Estimated extent is from version 13.1 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.
