Regional ecosystem details for 2.3.47
| Regional ecosystem | 2.3.47 |
|---|---|
| Vegetation Management Act class | Of concern |
| Wetlands | Not a Wetland |
| Biodiversity status | Of concern |
| Subregion | 4 |
| Estimated extent1 | Pre-clearing 1000 ha; Remnant 2021 1000 ha |
| Short description | Vachellia ditricha low open woodland on active Quaternary alluvial plains of the Mitchell River delta |
| Structure code | Low Open Woodland |
| Description | Vachellia ditricha low open woodland. Emergent Eucalyptus spp. or Corymbia spp. may occur. A sparse shrub layer, dominated by Vachellia ditricha, commonly occurs. The ground layer is tussock grasses, including Themeda arguens, Sarga plumosum and Brachyachne convergens. Occurs on active Quaternary alluvial plains of the Mitchell River delta. Brown silty clay loams and non-cracking clays. Not a Wetland. (BVG1M: 27a). |
| Fire management guidelines | SEASON: March to April, with occasional storm burns if woody weeds are 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: Do not actively target burning of sedgelands. 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 overabundant seedlings and saplings. Invasive and high biomass grasses (e.g., buffel, Para and grader grasses) may increase fire severity to the detriment of these ecosystems. |
| Comments | 2.3.47: A rare vegetation community. Was previously mapped as 2.3.11j. |
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.
