Regional ecosystem details for 12.12.26
| Regional ecosystem | 12.12.26 |
|---|---|
| Vegetation Management Act class | Endangered |
| Wetlands | Not a Wetland |
| Biodiversity status | Endangered |
| Subregion | 5, 6, (7) |
| Estimated extent1 | Pre-clearing 9000 ha; Remnant 2021 1000 ha |
| Short description | Acacia harpophylla open forest on Mesozoic to Proterozoic igneous rocks |
| Structure code | Open Forest |
| Description | Acacia harpophylla +/- semi-evergreen vine thicket +/- Casuarina cristata +/- Eucalyptus populnea. Occurs on Mesozoic to Proterozoic igneous rocks. Lower slopes. Not a Wetland. (BVG1M: 25a). Vegetation communities in this regional ecosystem include: 12.12.26a: Eucalyptus populnea +/- E. tereticornis grassy woodland. Occurs on lower slopes and undulations on Mesozoic to Proterozoic igneous rocks. Not a Wetland. (BVG1M: 17a). |
| Supplementary description | Bean et al. (1998), H1 (in part) |
| Protected areas | Grongah NP |
| Fire management guidelines | INTERVAL: Fire return interval not relevant. INTERVAL_MIN: 100. INTERVAL_MAX: 100. STRATEGY: Do not burn deliberately or light up remnant edges. Planned burns should be used to protect scrubs from fire incursion and to reduce fuel loads in order to prevent the spread of wildfire. Any planned fire lit near the edge of a remnant should be drawn away from remnant perimeter using prevailing wind conditions. ISSUES: This vegetation primarily requires protection from fire, however carefully managed low intensity fires will be useful in buffering remnants from surrounding vegetation and reducing fuel loads, leading to overall protection of the RE from wildfire. Moderate fires in buffer areas may assist in the regeneration of hard-seeded species and occasional high intensity fires may enhance acacia regeneration. Frequent fires may eliminate acacia, casuarina and other obligate seeding species. Remnants can be degraded by wildfire and planned burns on margins as they can allow grasses such as buffel Cenchrus ciliaris and green panic Megathyrsus maximus to penetrate. |
| Comments | 12.12.26: Extensively cleared for cropping. 12.12.26a: Eucalyptus populnea is one of the species characteristics of the broad overlap between the Southeast Queensland and Brigalow Belt bioregions. Confined to western margins of bioregion. Cleared and thinned for grazing and agriculture. Some relatively intact remnants present in road reserves. |
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.
