Regional ecosystem details for 11.9.1
| Regional ecosystem | 11.9.1 |
|---|---|
| Vegetation Management Act class | Endangered |
| Wetlands | Not a Wetland |
| Biodiversity status | Endangered |
| Subregion | 15, 11, 10, 6, 16, 26, (21), (19), (20), (24), (27), (25), (10.4), (23), (12), (5), (22), (2), (18), (4.4), (13) |
| Estimated extent1 | Pre-clearing 564000 ha; Remnant 2021 53000 ha |
| Short description | Acacia harpophylla-Eucalyptus cambageana woodland to open forest on fine-grained sedimentary rocks |
| Structure code | Open Forest |
| Description | Eucalyptus cambageana or E. thozetiana and Acacia harpophylla woodland to open forest. Eucalyptus cambageana is commonly codominant with Acacia harpophylla in the open forest, or the open forest may be dominated by A. harpophylla and have scattered emergent Eucalyptus cambageana or E. thozetiana trees. The community has a lower tree/tall shrub layer dominated by species such as Eremophila mitchellii, Carissa ovata and Geijera parviflora, with Terminalia oblongata often present in the north. The ground layer is frequently sparse. Associated with slopes and crests of undulating plains and below low ridges and escarpments formed from Cainozoic to Proterozoic consolidated, fine-grained sediments. Texture contrast soils predominate, often with surface stone or gravel in sub-surface horizons, but other soils such as clays, sandy clay loams and cracking clays may also be present. Not a Wetland. (BVG1M: 25a). |
| Supplementary description | Gunn et al. (1967), Hillalong (3), Humboldt (3), Rutland (5), Skye (4) Wharton (3); Speck et al. (1968), Eurombah (6), Wandoan (5),Womblebank (4); Story et al. (1967), Arcadia (2), Daunia (3,4); Gunn and Nix (1977), LU 34, 46; Turner (1978), Highlands (28 |
| Protected areas | Taunton NP (S), Blackdown Tableland NP, Carnarvon NP, Palmgrove NP (S), Humboldt NP, Blackwater CP, Isla Gorge NP, Homevale NP |
| Special values | 11.9.1: Potential habitat for NCA listed species: Solanum adenophorum, Solanum dissectum, Solanum elachophyllum, Solanum johnsonianum, Xerothamnella herbacea. |
| Fire management guidelines | INTERVAL: Fire return interval not relevant. INTERVAL_MIN: 100. INTERVAL_MAX: 100. STRATEGY: Maintain fire management of surrounding country so that wildfires will be very limited in extent. Frequent fire at the edge of this RE keeps fuel loads low. Protection from fire is necessary. ISSUES: Casuarina cristata is fire sensitive, although germination can be good in bare areas. Brigalow is soft-seeded, so germination is not promoted by fire. Buffel grass invasion will increase risk from fire. High intensity fires will cause damage to overstorey. Grazing may be an option for reducing fuel loads where exotic grass such as buffel have invaded. |
| Comments | 11.9.1: Includes areas of A. harpophylla/E. mitchellii scattered trees with much bare ground and severe sheet or gully erosion (Gunn et al. 1967, Wharton land unit 5), Turner et al 1978, land unit 28, 29). Extensively cleared for cropping and pasture. This regional ecosystem has been subject to periodic canopy dieback due to drought in parts of central Queensland. |
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.
