Regional ecosystem details for 6.7.12
| Regional ecosystem | 6.7.12 |
|---|---|
| Vegetation Management Act class | Least concern |
| Wetlands | Not a Wetland |
| Biodiversity status | No concern at present |
| Subregion | 8, 3, 9, (6), (11), (10), (5), (7), (2), (4.4), (4), (11.37), (5.2), (1) |
| Estimated extent1 | Pre-clearing 1518000 ha; Remnant 2021 1295000 ha |
| Short description | Acacia aneura +/- Eucalyptus populnea low woodland on lateritic residuals |
| Structure code | Low Woodland |
| Description | Acacia aneura low woodland. Scattered Eucalyptus populnea emergents usually occur. Tall shrubs occur infrequently, including Dodonaea sinuolata subsp. acrodentata, Eremophila mitchellii, E. bowmanii and Prostanthera suborbicularis. A shrub layer, of A. aneura and/or Eremophila gilesii subsp. gilesii commonly occurs. The ground layer is seasonally variable. Dominant species include Amphipogon caricinus, Eriachne mucronata, Eragrostis lacunaria, E. eriopoda, Aristida calycina var. praealta and A. jerichoensis. The occurrence of forbs is variable, including Cheilanthes sieberi, Dysphania glomulifera, Euphorbia drummondii, Evolvulus alsinoides, Maireana villosa and Solanum ellipticum. Occurs on level to gently undulating lateritic residuals. Associated soils are shallow to very shallow red to yellowish earths or gravelly lithosols. Surfaces are hard setting and frequently covered with gravel and stone. Not a Wetland. (BVG1M: 23b). |
| Supplementary description | Dawson (1974), H2 (LU 51, 52), H4, M4 (LU 49 shallower soils); Boyland (1984), 11-7; Neldner (1984), 48c (98, 99), 52 (105); Mills and Lee (1990), H2 (LU 38), H4 (LU42), R2 (LU 54) |
| Protected areas | Idalia NP, Currawinya NP, Culgoa Floodplain NP, Mariala NP, Hell Hole Gorge NP, Welford NP, Narkoola NP |
| Special values | 6.7.12: Potential habitat for threatened flora species. |
| Fire management guidelines | SEASON: Various (wet season or winter). INTENSITY: Low to moderate. INTERVAL: Fire return interval not relevant. INTERVAL_MIN: 100. INTERVAL_MAX: 100. STRATEGY: Aim to exclude fire by fuel reduction in adjacent vegetation communities where possible. Undertake partial burns when necessary to reduce fuel loads and protect against severe wildfire. Burn with high soil moisture (i.e., after rain/storms) or in winter. ISSUES: Acacia aneura may be killed by high intensity fire. There is rarely enough fuel load to burn in these ecosystems. |
| Comments | 6.7.12: The structure and floristic composition varies from an Acacia aneura tall open shrubland to a wooded tussock grassland depending on disturbance history. Previously partly mapped as 6.5.16a. Occurs on plains east and west of the Warrego River. Extensive loss of topsoil and associated reduction in diversity of ground layer has occurred in some areas (Mills and Lee 1990). These areas are unstable often with extremely low ground cover and associated invasion by Eremophila gilesii subsp. gilesii. A. aneura densities (particularly of mature trees) are generally low in areas of poor condition. |
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.
