Regional ecosystem details for 6.7.17
| Regional ecosystem | 6.7.17 |
|---|---|
| Vegetation Management Act class | Least concern |
| Wetlands | Not a Wetland |
| Biodiversity status | No concern at present |
| Subregion | 8, 10, 11, (6), (5.6), (7), (5), (5.8) |
| Estimated extent1 | Pre-clearing 286000 ha; Remnant 2021 273000 ha |
| Short description | Eriachne mucronata +/- Amphipogon sericeus open tussock grassland, wooded with Acacia aneura and/or Corymbia terminalis on plains or flat tops of lateritic residuals |
| Structure code | Open Tussock Grassland |
| Description | Eriachne mucronata open tussock grassland, commonly with Amphipogon sericeus. Emergent Corymbia terminalis trees and Acacia spp. may occur. Occurs on flat to gently undulating crests of dissected lateritic plateaus. Associated soils are shallow, stony throughout, acid, red, earthy, loams and clay-loams. Silcrete stones and boulders are spread throughout. Not a Wetland. (BVG1M: 23b). |
| Supplementary description | Dawson (1974), R4 (LU 88); R6; H4; Neldner (1984), 71 (112) |
| Protected areas | Currawinya NP |
| Fire management guidelines | SEASON: Late wet/early dry season when there is good soil moisture. Early storm season or after good spring rains. INTENSITY: Various. Mainly low, but also moderate. INTERVAL: > 5 years. INTERVAL_MIN: 5. INTERVAL_MAX: 50. STRATEGY: Begin burning soon after the wet season so that fires will carry only a small distance. Patchy burns are preferred. Burn less than 30% in any year. Burn under conditions of good soil moisture and when plants are actively growing. Where woody thickening is an issue, implement burns soon after high rainfall events, before woody seedlings become established. ISSUES: Patchy burning within Mitchell grass plains provides an appropriate mix of fresh and older tussocks and regenerates associated herbs. Fire may enhance seed production and tillering. Fire can be used to manage woody thickening (e.g., Acacia latifolia and gidgee Acacia cambagei) and weeds (e.g., prickly mimosa Vachellia farnesiana and prickly acacia A. nilotica), especially after high rainfall events. Ensure open grassland plains are maintained; create a patchily burnt landscape. |
1 Estimated extent is from version 13.1 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.
