Regional ecosystem details for 10.4.3
| Regional ecosystem | 10.4.3 |
|---|---|
| Vegetation Management Act class | Of concern |
| Wetlands | Contains Palustrine |
| Biodiversity status | Of concern |
| Subregion | 3, 2 |
| Estimated extent1 | Pre-clearing 2000 ha; Remnant 2021 1000 ha |
| Short description | Acacia harpophylla and/or Eucalyptus cambageana open woodland on Cainozoic lake beds |
| Structure code | Woodland |
| Description | Acacia harpophylla and/or Eucalyptus cambageana woodlands. Occurs on clay and texture contrast soils. Gently undulating downs and plains on Cainozoic lake deposits. Contains Palustrine. (BVG1M: 25a). Vegetation communities in this regional ecosystem include: 10.4.3a: [RE not in use]²: This vegetation community is now mapped as 10.4.2. Acacia harpophylla dominates the very sparse tree layer with Eucalyptus cambageana emergents or Eucalyptus cambageana. Acacia harpophylla dominates the very sparse to sparse canopy. Eucalyptus cambageana is occasionally an emergent. Lysiphyllum carronii and Eucalyptus brownii occur occasionally in the canopy. Eremophila mitchellii occurs as scattered large shrubs or small trees. Carissa lanceolata or C. ovata usually dominate the very sparse shrub layer. Eremophila deserti is often present and sometimes a dominant shrub. Sporobolus actinocladus, Paspalidium caespitosum, Bothriochloa ewartiana and/or Eragrostis lacunaria may occur as dominant graminoids in the ground layer. Occurs on Cainozoic lake beds. Not a Wetland. (BVG1M: 25a). 10.4.3b: [RE not in use]²: This vegetation community is now mapped as 10.4.3. Eucalyptus cambageana woodland, occasionally with Acacia harpophylla. A second tree layer dominated by Acacia harpophylla commonly occurs. Tussock grass dominated ground layer. Occurs on Cainozoic clay plains. Not a Wetland. (BVG1M: 25a). |
| Supplementary description | Gunn et al. (1967), Bl, D, Du, Hu, Mo, So; Thompson and Turpin (in prep), A11a, E65g |
| Special values | 10.4.3: Associated with gilgais that may support ephermal wetlands. |
| Fire management guidelines | INTERVAL: Fire return interval not relevant. INTERVAL_MIN: 100. INTERVAL_MAX: 100. STRATEGY: Do not target for fires. Control fuel loads in the surrounding vegetation. Can tolerate only very early dry season fires, under mild conditions, that trickle along the ground layer. Brigalow scrubs tend to act as fire breaks owing to sparse ground vegetation. ISSUES: Brigalow is soft-seeded, so germination is not promoted by fire. Brigalow is only tolerant of low intensity fires trickling underneath, and can be damaged or killed by moderate to high intensity fires. Exotic grasses, such as Buffel grass, carry intense fires into these communities and can cause tree deaths. Control of fuel loads in the surrounding vegetation is important. |
| Comments | 10.4.3: This ecosystem is subject to clearing for pasture development. There is potential for Parthenium invasion on the heavy clay soils. 10.4.3a: Occurs mostly central parts of subregion 2 in the vicinity of Lake Galilee and further south. |
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.
