Regional ecosystem details for 11.5.12
| Regional ecosystem | 11.5.12 |
|---|---|
| Vegetation Management Act class | Least concern |
| Wetlands | Not a Wetland |
| Biodiversity status | No concern at present |
| Subregion | 3, 1, 14, 5, 7, (6), (11), (10.3), (9.4), (24), (8), (15), (26), (10.4) |
| Estimated extent1 | Pre-clearing 66000 ha; Remnant 2021 54000 ha |
| Short description | Corymbia clarksoniana woodland and other Corymbia spp. and Eucalyptus spp. on Cainozoic sand plains and/or remnant surfaces |
| Structure code | Woodland |
| Description | Corymbia clarksoniana and C. dallachiana +/- C. lamprophylla +/- Callitris glaucophylla +/- Corymbia tessellaris woodland. A low tree layer comprising species such as Lysicarpus angustifolius, Acacia leiocalyx and sometimes Melaleuca nervosa is often present. The ground layer is dominated by grasses such as Aristida spp., Themeda triandra Heteropogon contortus and occasionally Triodia pungens. Occurs on colluvial lower slopes of Cainozoic sandplains. Not a Wetland. (BVG1M: 9e). Vegetation communities in this regional ecosystem include: 11.5.12a: Eucalyptus exserta and/or Corymbia clarksoniana and/or Eucalyptus crebra and/or Corymbia trachyphloia and/or C. citriodora woodland. Occurs on colluvial lower slopes of Cainozoic sandplains. Not a Wetland. (BVG1M: 18a). |
| Supplementary description | Gunn et al. (1967), Lennox, Tichbourne; Speck et al. (1968), Wooroonah; Gunn and Nix (1977), LU 7, 8 |
| Protected areas | Nairana NP |
| Fire management guidelines | SEASON: Late wet to early dry season when there is good soil moisture. Early storm season or after good spring rains. INTENSITY: Low to moderate. INTERVAL: 6-10 years. INTERVAL_MIN: 6. INTERVAL_MAX: 10. STRATEGY: Restrict to less than 30% in any year. Burn under conditions of good soil moisture and when plants are actively growing. Sometimes a small amount of wind may move the fire front quickly so that burn intensity is not too severe to destroy habitat trees. ISSUES: Burn interval for conservation purposes will differ from that for grazing purposes; the latter being much shorter. Management of this vegetation type should be based on maintaining vegetation composition, structural diversity, fauna habitats (in particular hollow-bearing trees and logs) and preventing extensive wildfire. Maintaining a fire mosaic will help ensure protection of habitat and mitigate against wildfires. Fire can control shrub invasives (e.g., Eremophila spp. and A. stenophylla in the red soil country in particular). Fire will also control cypress. Low to moderate intensity burns with good soil moisture are necessary to minimise loss of hollow trees. Avoid burning riparian communities as these can be critical habitat for some species. Culturally significant (scar) trees may need protection, such as rake removal of ground fuels. Planned burns have traditionally been carried out in the winter dry season; further research required. |
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.
