Regional ecosystem details for 9.3.23
| Regional ecosystem | 9.3.23 |
|---|---|
| Vegetation Management Act class | Of concern |
| Wetlands | Not a Wetland |
| Biodiversity status | Of concern |
| Subregion | 5, 2 |
| Estimated extent1 | Pre-clearing 4000 ha; Remnant 2021 4000 ha |
| Short description | Acacia tephrina open forest on alluvial clay plains |
| Structure code | Open Forest |
| Description | Open forest to woodland of Acacia tephrina (boree). There is no mid layer though isolated individuals of Atalaya hemiglauca (whitewood), Lysiphyllum carronii (Queensland ebony) and Carissa lanceolata (currantbush) can occur. The ground layer is generally sparse and forb dominated. Occurs on gilgaied deep alluvial clays on the Einasleigh River, derived from, but downstream of, basalt areas. Not a Wetland. (BVG1M: 27a). |
| Protected areas | Great Basalt Wall NP |
| Special values | 9.3.23: Significant habitat as drought refuge, wildlife corridors and for arboreal animals. |
| Fire management guidelines | INTERVAL: 10-50 years generally following periods of high rainfall and sufficient grass growth. INTERVAL_MIN: 10. INTERVAL_MAX: 50. STRATEGY: Maintain a landscape mosaic of burnt and unburnt in surrounding country to limit potentially invasive fires. ISSUES: Acacia species are vulnerable to frequent and high intensity fire. Burn surrounding country to mitigate intensity and extent of unplanned fire. Introduced invasive grasses are a threat to fire-sensitive communities. Boree A. tephrina is fire-killed and does not need fire for regeneration. Germination is very occasional and generally follows high rainfall years. |
| Comments | 9.3.23: Occurs on the upper Einasleigh River and pockets in and adjacent to Great Basalt Wall in the central and southern bioregion. Vulnerable to invasion by exotic pasture species Cenchrus ciliaris (buffel grass). Other weeds are Urochloa mosambicensis, Bidens bipinnata (cobbler's peg), Xanthium occidentale (Noogoora burr), Vachellia farnesiana (mimosa) and Bothriochloa pertusa (Indian couch). |
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.
