Regional ecosystem details for 2.9.4
| Regional ecosystem | 2.9.4 |
|---|---|
| Vegetation Management Act class | Least concern |
| Wetlands | Not a Wetland |
| Biodiversity status | Of concern |
| Subregion | 8, 5, (2), (3), (1.3), (4.5) |
| Estimated extent1 | Pre-clearing 39000 ha; Remnant 2021 31000 ha |
| Short description | Acacia cambagei low woodland on undulating plains and hillslopes of Cretaceous mudstones. |
| Structure code | Low Woodland |
| Description | Acacia cambagei low open woodland to woodland, occasionally with Lysiphyllum cunninghamii, Ventilago viminalis, Grevillea striata and Acacia tephrina in the canopy. A sparse shrub layer may occur, including A. cambagei and Carissa lanceolata. The ground layer is tussock grasses, including Astrebla spp. and Aristida spp. with areas of bare ground and surface gravel. Occurs on undulating plains and hillslopes of Cretaceous mudstones. Calcareous cracking clays, often gravelly. Not a Wetland. (BVG1M: 26a). Vegetation communities in this regional ecosystem include: 2.9.4a: [RE not in use]²: This vegetation community has been amalgamated into 2.9.4. Acacia cambagei low open woodland to woodland, occasionally with Lysiphyllum cunninghamii, Ventilago viminalis, Grevillea striata and Acacia tephrina in the canopy. A sparse shrub layer may occur, including A. cambagei and Carissa lanceolata. The ground layer is tussock grasses, including Astrebla spp. and Aristida spp. with areas of bare ground and surface gravel. Occurs on undulating plains and hillslopes of Cretaceous mudstones. Not a Wetland. (BVG1M: 26a). 2.9.4x1: [RE not in use]²: This regional ecosystem is now mapped as 2.9.9. Mixed low woodland, including a combination of the species Lysiphyllum cunninghamii, Ventilago viminalis, Atalaya hemiglauca, Corymbia terminalis, Owenia acidula, Denhamia oleaster and Acacia cambagei. A sparse shrub layer may occur, including canopy species Carissa lanceolata and Santalum lanceolatum. The ground layer is tussock grasses. Includes small areas of Enneapogon polyphyllus tussock grassland on exposed mudstone rocks. Occurs on plains and low rises of Cretaceous mudstone and limestone (Toolebuc Formation). Brown cracking clay soils with patches of exposed rock. Not a Wetland. (BVG1M: 27b). 2.9.4x41a: [RE not in use]²: This vegetation community is now mapped as 2.4.3a. Acacia cambagei low woodland. A shrub layer dominated by Acacia cambagei commonly occurs. The ground layer is sparse tussock grasses, including Aristida latifolia, Enneapogon spp. and Sporobolus australasicus. Occurs on undulating, Tertiary high-level alluvial clay deposits, commonly gravelly. Orange to brown clay soils. Not a Wetland. (BVG1M: 26a). 2.9.4x41b: [RE not in use]²: This vegetation community is now mapped as 2.4.3b. Acacia cambagei low woodland. A shrub layer dominated by Acacia cambagei commonly occurs. The ground layer is sparse tussock grasses. Occurs on exposures of Tertiary high-level alluvial clay deposits in shallow depressions on lateritic plateau surfaces. Yellow-brown clay soils. Not a Wetland. (BVG1M: 26a). |
| Supplementary description | Neldner (1991), 8, 26, 44; Perry et al. (1964), Punchbowl, Cowan, Donaldson, Donors |
| Fire management guidelines | SEASON: Avoid the hottest seasons. INTENSITY: Moderate. INTERVAL: 6-10 years. INTERVAL_MIN: 6. INTERVAL_MAX: 10. STRATEGY: Burn less than 30% in any year. Buffer as indicated by fuel build-up in surrounding vegetation. ISSUES: Too frequent fire may disadvantage and reduce extent of this vegetation type. Avoid fires at the hottest time of the year, when extent of fires cannot be controlled. Low intensity fires will be useful in reducing fuel loads and fire spread in later fires. Moderate fires may assist in regeneration of hard-seeded spp. |
| Comments | 2.9.4: Survey required to verify condition. Subject to clearing for pasture development and to loss of ground cover due to high total grazing pressures. 2.9.4a: Central and southern parts of Donors Plateau subregion. Subject to clearing for pasture development and to loss of ground cover due to high total grazing pressures. 2.9.4x41a: Subject to clearing for pasture development and to loss of ground cover due to high total grazing pressures. |
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.
2 Superseded: Revision of the regional ecosystem classification removed this regional ecosystem code from use. It is included in the regional ecosystem description database because the RE code may appear in older versions of RE mapping and the Vegetation Management regulation.
