Regional ecosystem details for 4.7.3
| Regional ecosystem | 4.7.3 |
|---|---|
| Vegetation Management Act class | Of concern |
| Wetlands | Not a Wetland |
| Biodiversity status | Of concern |
| Subregion | 5, 4, (10.1) |
| Estimated extent1 | Pre-clearing 10000 ha; Remnant 2021 7000 ha |
| Short description | Archidendropsis basaltica, Acacia aneura low open woodland on lateritised Tertiary sediments |
| Structure code | Low Open Woodland |
| Description | Archidendropsis basaltica and Acacia aneura low open woodland to tall shrubland. Atalaya hemiglauca and Flindersia maculosa may occur in the canopy. A shrub layer may occur, including Eremophila latrobei and Indigofera leucotricha. The ground layer includes Eriachne mucronata, Aristida spp., Enneapogon spp. and areas of Triodia pungens. Occurs on flat to gently undulating tops of mesas and buttes formed from Tertiary sediments (lateritised Glendower Formation) which are often deeply weathered. Associated soils are generally lithosols with a dense surface cover of ironstone gravel. Not a Wetland. (BVG1M: 23b). |
| Supplementary description | Turner et al. (1993), R4 (70) |
| Fire management guidelines | SEASON: Wet to early dry season when soil is moist. INTENSITY: Low. INTERVAL: Broad interval range of 6-10 years. INTERVAL_MIN: 6. INTERVAL_MAX: 10. STRATEGY: Patchy, within the 20-30% range of area burnt. ISSUES: Acacias germinate infrequently following high rainfall events, mature slowly and are long-lived. Acacias are vulnerable to frequent and high-severity fires. Fire in surrounding fire-adapted communities can be used to mitigate against wildfire. Fuel loads within Acacia communities can sometimes also require infrequent patchy burns, particularly following years of good rain, to protect them from wildfire and promote diversity at the ground layer. Introduced invasive grasses (e.g., buffel Cenchrus ciliaris) may increase the risk and severity of fires. |
| Comments | 4.7.3: Associated with eastern scattered parts of RE 4.7.1. |
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.
