Regional ecosystem details for 2.4.5
| Regional ecosystem | 2.4.5 |
|---|---|
| Vegetation Management Act class | Least concern |
| Wetlands | Not a Wetland |
| Biodiversity status | Of concern |
| Subregion | 2, 8, 3, (4.5), (1.3), (7), (5) |
| Estimated extent1 | Pre-clearing 67000 ha; Remnant 2021 67000 ha |
| Short description | Atalaya hemiglauca, Grevillea striata, Acacia victoriae and Vachellia sutherlandii in mixed low open woodlands on Tertiary clay plains |
| Structure code | Low Woodland |
| Description | Mixed low open woodland with combinations of the species Atalaya hemiglauca, Grevillea striata, Acacia victoriae and Vachellia sutherlandii. Acacia cambagei and Ventilago viminalis may also occur in the canopy. The ground layer is tussock grasses, including Dichanthium spp., Astrebla spp., Aristida latifolia, Panicum decompositum, Chrysopogon fallax, Eulalia aurea, Iseilema sp. Occurs on Tertiary clay plains. Grey to brown cracking clay soils. Not a Wetland. (BVG1M: 27a). |
| Fire management guidelines | SEASON: March to April, with occasional storm burns if woody thickening is a problem. INTENSITY: Low, occasionally moderate and high intensities. INTERVAL: 3-6 years south of latitudes below Karumba, 1-3 years to the north. INTERVAL_MIN: 1. INTERVAL_MAX: 6. STRATEGY: Commence burning early in dry season to break up continuity of fuel across the landscape. Mosaic burning across the landscape at varying frequency will create patches at varying stages of post-fire response. Burn with good soil moisture to promote regeneration. ISSUES: Retaining grasslands by preventing woody thickening may be an issue in some situations. A long absence of fire or low intensity fire too early in the season may lead to woody thickening. Invasive and high biomass grasses (e.g., buffel, Para and grader grasses) may increase fire severity to the detriment of these ecosystems. |
| Comments | 2.4.5: Was previously mapped as 2.3.18x41. Subject to degradation from high total grazing pressure. |
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.
