Regional ecosystem details for 9.10.9
| Regional ecosystem | 9.10.9 |
|---|---|
| Vegetation Management Act class | Of concern |
| Wetlands | Not a Wetland |
| Biodiversity status | Of concern |
| Subregion | 3, (2) |
| Estimated extent1 | Pre-clearing 2000 ha; Remnant 2021 2000 ha |
| Short description | Acacia johannis low woodland on sandstones of Ngarrabullan |
| Structure code | Low Woodland |
| Description | Low woodland to tall open shrubland of Acacia johannis, interspersed with bare sandstone pavements with small shrublands of Grevillea decora subsp. decora, Calytrix exstipulata, Acacia spp., Jacksonia thesioides, Petalostigma banksii (smooth-leaved quinine) and Persoonia falcata (geebung). Occurs on plateau. Not a Wetland. (BVG1M: 24a). |
| Special values | 9.10.9: Habitat for the vulnerable species Macropteranthes montana. The ecosystem is also habitat for Acacia johannis that has a restricted distribution. |
| 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. Avoid burning August-October when south-easterly winds are typically strongest. INTENSITY: Low, with occasional moderate or high. INTERVAL: 5-10 years. INTERVAL_MIN: 5. INTERVAL_MAX: 10. STRATEGY: Apply mosaic across the landscape at a range of frequencies to create varying stages of post-fire response. ISSUES: These ecosystems contain shrubs that germinate after fire. Seedlings typically take a number of years to mature. Avoid repeated fires at short intervals and high intensity burns of broad areas. Leave areas of long unburnt vegetation to maintain a diversity of habitat for wildlife. Shrub species diversity will decline if areas are left long unburnt. |
| Comments | 9.10.9: Restricted to Ngarabullgan (Mt. Mulligan) in the central bioregion. |
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.
