Regional ecosystem details for 6.7.9
| Regional ecosystem | 6.7.9 |
|---|---|
| Vegetation Management Act class | Least concern |
| Wetlands | Not a Wetland |
| Biodiversity status | No concern at present |
| Subregion | 10, 8, 11, 9, (7), (5.5), (6), (5.6), (5.9), (4.4), (5.2), (5.8) |
| Estimated extent1 | Pre-clearing 1369000 ha; Remnant 2021 1321000 ha |
| Short description | Acacia aneura +/- A. clivicola +/- Eremophila latrobei tall open shrubland on residuals |
| Structure code | Tall Open Shrubland |
| Description | Acacia aneura tall open shrubland with Corymbia terminalis emerging above the canopy. Grevillea striata is conspicuous in places. There is no well-defined shrub layer, although scattered tall and low shrubs are frequently present. The ground cover is sparse and may be dominated by either grasses or forbs. Occurs on gently undulating to flat plains (slope 0.5 to 2%), formed from undifferentiated superficial Quaternary deposits and Tertiary Glendower formation. Associated soils are shallow, loamy, red earths with silcrete cover. Soils are massive throughout and are neutral to slightly acid, ranging from sandy-loams to clay-loams. Gravel commonly occurs in the lower part of the profile. Where the soils are deeper, hardpans occur. Not a Wetland. (BVG1M: 23b). Vegetation communities in this regional ecosystem include: 6.7.9x50: Acacia sibirica and/or Acacia aneura tall open shrubland. Emergent Corymbia terminalis and Grevillea striata may occur. The ground layer is seasonally variable, with tussock grasses and forbs. Occurs on level sand sheets in the north-west of the bioregion. Red earths. Not a Wetland. (BVG1M: 23b). |
| Supplementary description | Dawson (1974), H2, (LU 51, 52), H3 (LU 56), R2 (LU 90); Boyland (1984), 13a; Neldner (1984), 56 (107); Mills (1980), H4 (LU 24) |
| Protected areas | Welford NP, Currawinya NP, Lake Bindegolly NP, Hell Hole Gorge NP |
| Special values | 6.7.9: Possible habitat for threatened flora species in fire shadows. Potential habitat for threatened fauna species including redthroat (Sericornis brunneus). |
| Fire management guidelines | SEASON: Various (wet season or winter). INTENSITY: Low to moderate. INTERVAL: Fire return interval not relevant. INTERVAL_MIN: 100. INTERVAL_MAX: 100. STRATEGY: Aim to exclude fire by fuel reduction in adjacent vegetation communities where possible. Undertake partial burns when necessary to reduce fuel loads and protect against severe wildfire. Burn with high soil moisture (i.e., after rain/storms) or in winter. ISSUES: Acacia aneura may be killed by high intensity fire. There is rarely enough fuel load to burn in these ecosystems. |
| Comments | 6.7.9: Widespread in the western parts of the bioregion. |
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.
