Regional ecosystem details for 10.3.2
| Regional ecosystem | 10.3.2 |
|---|---|
| Vegetation Management Act class | Least concern |
| Wetlands | Not a Wetland |
| Biodiversity status | Of concern |
| Extent in reserves | This vegetation community is now mapped as 10.3.1 and 10.3.5. |
| Short description | Acacia argyrodendron with or without Eucalyptus cambageana open woodland on alluvial plains (eastern) |
| Structure code | Open Woodland |
| Description | [RE not in use]²: This vegetation community is now mapped as 10.3.1 and 10.3.5. Acacia argyrodendron or Eucalyptus cambageana usually with an understorey of A. argyrodendron dominate the very sparse to sparse canopy layer. The ground layer is very sparse. Occurs on alluvial plains with mostly grey clay soils and some areas of duplex soils in the east. Not a Wetland. (BVG1M: 26a). Vegetation communities in this regional ecosystem include: 10.3.2a: [RE not in use]²: This vegetation community is now mapped as 10.3.1. Acacia argyrodendron dominates the very sparse canopy. A. argyrodendron, A. cambagei, Lysiphyllum carronii, Terminalia oblongata are frequently present as scattered trees but may occasionally form a very sparse sub-canopy. Eremophila mitchellii and Atalaya hemiglauca are frequently present as scattered small trees. Carissa lanceolata usually dominates the very sparse shrub layer. The dominant graminoids are variable including Brachyachne convergens, Dactyloctenium radulans, Bothriochloa ewartiana, Enteropogon acicularis and Fimbristylis dichotoma. Occurs on grey cracking clays sometimes with massive gilgai and texture contrast soils. Not a Wetland. (BVG1M: 26a). 10.3.2b: [RE not in use]²: This vegetation community is now mapped as 10.3.5. Eucalyptus cambageana open woodland to woodland usually with Acacia argyrodendron understorey on alluvium. Eucalyptus cambageana dominates the very sparse to sparse canopy. Acacia argyrodendron is occasionally present in the canopy and is frequently dominant in the very sparse to sparse small sub-canopy layer. Eremophila mitchellii is often present and Terminalia oblongata and Atalaya hemiglauca are occasionally present in the low tree layer. Carissa lanceolata frequently dominates the very sparse shrub layer. Enteropogon ramosus, Tripogon loliiformis, Eulalia aurea, Paspalidium caespitosum, Aristida personata and Sporobolus caroli have been recorded as dominant graminoids in the very sparse to sparse ground layer. Occurs on alluvial plains (eastern). Not a Wetland. (BVG1M: 25a). 10.3.2bx1: [RE not in use]²: This vegetation community is now mapped as 10.3.5. Eucalyptus cambageana dominates the very sparse tree layer usually with very sparse understorey of Acacia argyrodendron, scattered shrubs or very sparse shrub layer, and very sparse ground layer with Chrysopogon fallax, Enchylaena tomentosa, Enteropogon acicularis, Paspalidium caespitosum and Sporobolus caroli present. Occurs on flat to gently undulating terrain with clayey soil. Not a Wetland. (BVG1M: 25a). |
| Supplementary description | Thompson and Turpin (in prep), A10e, E65j |
| 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 | 10.3.2: This ecosystem is subject to clearing for pasture development. Occurrences on texture contrast soils are subject to scalding. There is potential for Parthenium invasion on the heavy clay soils. 10.3.2a: Occurs mostly in subregion 3 with small areas in subregion 2 near Lake Buchanan and near Lake Dunn. |
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.
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.
