Regional ecosystem details for 10.4.1
| Regional ecosystem | 10.4.1 |
|---|---|
| Vegetation Management Act class | Least concern |
| Wetlands | Not a Wetland |
| Biodiversity status | Of concern |
| Subregion | 1, 3, (2), (4.5), (11.3) |
| Estimated extent1 | Pre-clearing 192000 ha; Remnant 2021 114000 ha |
| Short description | Acacia argyrodendron woodland on Cainozoic lake beds |
| Structure code | Woodland |
| Description | Acacia argyrodendron woodland to open forest, occasionally with Acacia cambagei. There may be a second tree layer of species including A. argyrodendron, Terminalia oblongata, Lysiphyllum carronii, Atalaya hemiglauca, Casuarina cristata and Acacia cambagei. Tussock grass ground layer of Dichanthium sericeum, Panicum decompositum and Aristida latifolia. Occurs on plains and gently undulating downs with deep cracking grey clay soils on Cainozoic lake beds. Not a Wetland. (BVG1M: 26a). Vegetation communities in this regional ecosystem include: 10.4.1x1: [RE not in use]²: This regional ecosystem is now mapped as 10.4.1. Acacia argyrodendron dominates the very sparse tree layer. Carissa ovata or C. lanceolata dominates the very sparse shrub layer and Paspalidium caespitosum and Sporobolus caroli codominate the very sparse ground layer. Occurs on flat to gently undulating clay plain. Contains Palustrine. (BVG1M: 26a). 10.4.1x2: [RE not in use]²: This regional ecosystem is now mapped as 10.4.1. Acacia argyrodendron dominates the very sparse tree layer and Paspalidium caespitosum and Brachyachne convergens codominate the very sparse ground layer. Occurs on flat to gently undulating clay plain. Contains Palustrine. (BVG1M: 26a). 10.4.1x3: [RE not in use]²: This regional ecosystem is now mapped as 10.4.1. Acacia argyrodendron dominates the very sparse low tree layer. Eremophila mitchellii often dominates the very small shrub layer and Dactyloctenium radulans and Iseilema vaginiflorum usually dominate the very sparse ground layer. Occurs on flat to gently undulating clay plain. Contains Palustrine. (BVG1M: 26a). |
| Supplementary description | Thompson and Turpin (in prep), A10a |
| Protected areas | Moorrinya NP, Forest Den NP |
| Special values | 10.4.1x1: Associated with gilgais that may support ephermal wetlands. 10.4.1x2: Associated with gilgais that may support ephermal wetlands. 10.4.1x3: Associated with gilgais that may support ephermal wetlands. |
| 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 | 10.4.1: 10.9.1e is now mapped as part of this RE. Endemic to clay lake bed deposits in Natal Downs, Victoria Downs and Lake Dunn areas. Subject to clearing for pasture development and has undergone significant pasture degradation. There is potential for Parthenium invasion on the heavy 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.
2 Superseded: Revision of the regional ecosystem classification removed this regional ecosystem code from use. It is included in the regional ecosystem description database because the RE code may appear in older versions of RE mapping and the Vegetation Management regulation.
