Regional ecosystem details for 10.3.1
| Regional ecosystem | 10.3.1 |
|---|---|
| Vegetation Management Act class | Least concern |
| Wetlands | Not a Wetland |
| Biodiversity status | Of concern |
| Subregion | 1, 3, (2) |
| Estimated extent1 | Pre-clearing 39000 ha; Remnant 2021 26000 ha |
| Short description | Acacia argyrodendron low woodland on alluvial plains |
| Structure code | Low Woodland |
| Description | Acacia argyrodendron low woodland to open forest. Eucalyptus coolabah, Grevillea striata and Atalaya hemiglauca occasionally occur in the canopy. A secondary tree layer dominated by Acacia argyrodendron and Eremophila mitchellii is usually present. An Eremophila mitchellii shrub layer is usually present. Tussock grass ground layer. Occurs on alluvial plains with grey clay and texture contrast soils. Not a Wetland. (BVG1M: 26a). |
| Supplementary description | Turner et al. (1993), W4 |
| Protected areas | Forest Den NP, Moorrinya NP |
| Fire management guidelines | SEASON: Wet to mid-dry season. Avoid late dry (August -September) as intensity will be too high (August -September). INTENSITY: Low. INTERVAL: 6-10 years, but will depend on seasonal conditions and grazing pressure. INTERVAL_MIN: 6. INTERVAL_MAX: 10. STRATEGY: Fire is not generally applied directly to acacia dominated communities, but to surrounding fire-adapted communities in order to create a landscape mosaic of burnt/unburnt areas to mitigate against wildfire. Ensure fires are patchy. ISSUES: Some blackwood communities on sandy soils need fire to maintain diverse grass layer. There is rarely enough fuel load to burn in these ecosystems. Buffel may lead to high fire intensities where ecosystem is heavily infested, with negative consequences for fire sensitive acacias. Blackwood is soft-seeded and fire has no role to play in its germination and regeneration. |
| Comments | 10.3.1: Texture contrast soils subject to pasture degradation and scalding. This regional ecosystem is subject to clearing for pasture development. Understorey largely removed/degraded due to grazing. Most clearing occurs on the clay soils. |
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.
