Regional ecosystem details for 5.7.6
| Regional ecosystem | 5.7.6 |
|---|---|
| Vegetation Management Act class | Least concern |
| Wetlands | Not a Wetland |
| Biodiversity status | No concern at present |
| Subregion | 4, 6.9, (2), (4.5), (6), (5), (4.4) |
| Estimated extent1 | Pre-clearing 96000 ha; Remnant 2021 96000 ha |
| Short description | Acacia cambagei tall shrubland +/- Triodia spp. +/- Senna spp. on scarp footslopes and eroding pediments |
| Structure code | Tall Shrubland |
| Description | Acacia cambagei predominates forming a distinct but discontinuous and groved canopy. Often open stony areas are present. Scattered Capparis anomala and Senna spp. shrubs are locally prominent. The ground layer is sparse to open and usually dominated by Triodia brizoides or T. longiceps. Tussock grasses and forbs are usually present, with their abundance dependent on seasonal conditions. Occurs on lower slopes of scarp retreat zones formed from Tertiary residual material overlying fine grained sediments (land zone 9). Soils predominantly shallow, stony red clays with dense surface gravel or stone. Not a Wetland. (BVG1M: 26a). |
| Supplementary description | Neldner (1991), 26a (19); Boyland (1984), 15a; Wilson and Purdie (1990a), R1 (36); ;Turner et al. (1978), R3 (10) |
| Protected areas | Bladensburg NP, Diamantina NP, Welford NP, Goneaway NP |
| Special values | 5.7.6: Potential habitat for NCA listed species: Eremophila tetraptera. |
| Fire management guidelines | SEASON: Various (storm season / wet season or winter). INTENSITY: Low - 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 spinifex (and other) fuel loads and protect against severe wildfire. Burn with high soil moisture (i.e., after rain/storms) or in winter to reduce Triodia spp. dominance where necessary. ISSUES: To manage the spread of the highly flammable Triodia spp., winter and/or wet/storm season fire can be used. Note some Acacias can be fire sensitive (e.g., A. shirleyi, A. aneura) and may be killed by high intensity fires. Winter burns may favour shrubs over Triodia spp. and thus change the ground layer composition over time. Due to the sparse nature of the spinifex in these ecosystems, there is rarely enough fuel load to burn. |
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.
