Regional ecosystem details for 10.3.4
| Regional ecosystem | 10.3.4 |
|---|---|
| Vegetation Management Act class | Least concern |
| Wetlands | Contains Palustrine |
| Biodiversity status | Of concern |
| Subregion | 4, 1, 2, (3), (4.5), (11.7), (11.15), (4.4), (11.24), (11.8) |
| Estimated extent1 | Pre-clearing 109000 ha; Remnant 2021 43000 ha |
| Short description | Acacia cambagei low woodland on alluvial plains |
| Structure code | Low Woodland |
| Description | Acacia cambagei low woodland to woodland. A shrub layer dominated by Eremophila mitchellii and Carissa lanceolata usually occurs. Tussock grass ground layer. Occurs on heavy clay and texture contrast soils on alluvial plains. Contains Palustrine. (BVG1M: 26a). Vegetation communities in this regional ecosystem include: 10.3.4a: [RE not in use]²: This vegetation community is now mapped as 10.3.4. Acacia cambagei woodland (western). Eremophila mitchellii usually dominates the very sparse shrub layer or occurs as scattered shrubs to small trees. Psydrax oleifolia and Atalaya hemiglauca are occasionally present. A small shrub layer sometimes occurs dominated by Senna artemisioides with or without suckers of Acacia cambagei or both species may occur as scattered shrubs. The ground layer is often poorly formed except under the canopy where there is usually a very sparse cover of dominants which include Paspalidium caespitosum, Sporobolus actinocladus and Brachyachne convergens. Occurs on alluvial plains (western). Contains Palustrine. (BVG1M: 26a). 10.3.4b: [RE not in use]²: This vegetation community is now mapped as 10.3.4. Acacia cambagei low woodland (eastern). Acacia cambagei dominates the sparse canopy. Eremophila mitchellii dominates the very sparse shrub layer. Shrubs frequently present include Capparis anomala and Carissa lanceolata. The ground layer is very sparse and sometime dominated by graminoids including Paspalidium caespitosum. Occurs on alluvial plains (eastern). Contains Palustrine. (BVG1M: 26a). 10.3.4c: [RE not in use]²: This vegetation community is now mapped as 10.3.4. Acacia cambagei woodland. Acacia cambagei dominates the very sparse canopy. Queensland ebony (Lysiphyllum carronii), yellowwood (Terminalia oblongata) and false sandalwood (Eremophila mitchellii) are commonly present in the very sparse small tree layer. The very sparse shrub layer is usually dominated by Carissa lanceolata or C. ovata. Other species usually present in this layer include Ehretia membranifolia, Atalaya hemiglauca and Capparis lasiantha. The ground layer is usually very sparse but is sometimes mid-dense. Occurs mostly on massive gilgai (eastern). Contains Palustrine. (BVG1M: 26a). 10.3.4d: [RE not in use]²: This vegetation community is now mapped as 10.3.4dx1. Acacia tephrina low woodland. Occurs on alluvial plains. Not a Wetland. (BVG1M: 27a). 10.3.4dx1: [RE not in use]²: This vegetation community is now mapped as 10.4.5x3. Acacia tephrina woodland. Occurs on flat clay plain. Not a Wetland. (BVG1M: 27a). |
| Supplementary description | Gunn et al. (1967), Fu; Turner et al. (1978), W4; Turner et al. (1993), W1 |
| Protected areas | Moorrinya NP, Forest Den NP |
| Special values | 10.3.4: Habitat for endangered species Ammannia robertsii. Larger gilgai may provide ephemeral wetland habitat. Associated with gilgais that may support ephermal wetlands. 10.3.4c: Provides habitat for wetlands species in gilgai depressions. |
| 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: These communities generally have sparse ground layer. Will only burn following irregular high rainfall events. 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: Acacias are fire sensitive and may be killed by high intensity or too frequent fire. |
| Comments | 10.3.4: 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. 10.3.4a: Occurs mostly in subregion 1 with some areas in the south-east on the edge of the boundary in subregion 2. Includes some areas of Acacia cambagei on fine grained sandstones which require further investigation. 10.3.4b: Occurs mostly in subregions 2 and 4 with some small areas in subregion 3. Naturalised species associated with this regional ecosystem include *Cenchrus ciliaris, which may dominate the ground layer. 10.3.4c: Restricted to subregion 3. Naturalised species associated with this regional ecosystem include *Ocimum basilicum and *Malvastrum americanum, which is commonly present to abundant. 10.3.4d: Very rare vegetation community only recorded from two locations in subregion 1. It occurs as a sub-dominant community in a mosaic with Acacia cambagei and grasslands. Further research is required to determine the distribution, condition and comprehensive floristics of this ecosystem. |
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.
