Regional ecosystem details for 6.4.4
| Regional ecosystem | 6.4.4 |
|---|---|
| Vegetation Management Act class | Least concern |
| Wetlands | Not a Wetland |
| Biodiversity status | No concern at present |
| Subregion | 8, (4), (4.4), (11.26) |
| Estimated extent1 | Pre-clearing 25000 ha; Remnant 2021 17000 ha |
| Short description | Acacia harpophylla and/or A. cambagei low woodland on Quaternary clay deposits |
| Structure code | Low Woodland |
| Description | Acacia harpophylla and/or A. cambagei low woodland. Eucalyptus spp. may occur as emergents. A number of scattered low tree and tall shrubs species are usually present. Low shrubs are frequent, but may be locally abundant. The ground layer is frequently sparse, although annual grasses and forbs may be seasonally abundant. Occurs on flat to gently undulating plains formed on Quaternary clay deposits. Associated soils range from very deep, strong gilgai microrelief, grey to reddish brown clays to texture contrast soils. Not a Wetland. (BVG1M: 25a). |
| Supplementary description | Dawson (1974), G5 (LU 70); Neldner (1984), 42a, 42b |
| Fire management guidelines | INTERVAL: Fire return interval not relevant. INTERVAL_MIN: 100. INTERVAL_MAX: 100. STRATEGY: Do not target for fires. Control fuel loads in the surrounding vegetation. Can tolerate only very early dry season fires, under mild conditions, that trickle along the ground layer. ISSUES: Brigalow is soft-seeded, so germination is not promoted by fire. Brigalow is only tolerant of mild fires trickling underneath, and can be damaged or killed by moderate to high intensity fires. Exotic grasses, such as Buffel grass, carry intense fires into these communities and can cause tree deaths. Control of fuel loads in the surrounding vegetation is important. |
| Comments | 6.4.4: Some areas subject to tree clearing. The density and composition of the shrub and ground layers varies with the location and the seasonal conditions. |
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.
