Regional ecosystem details for 11.3.18
| Regional ecosystem | 11.3.18 |
|---|---|
| Vegetation Management Act class | Least concern |
| Wetlands | Not a Wetland |
| Biodiversity status | No concern at present |
| Subregion | 24, 26, 32, (27), (22), (11), (33), (23), (15), (29), (28), (18), (25), (31), (13.3) |
| Estimated extent1 | Pre-clearing 140000 ha; Remnant 2021 78000 ha |
| Short description | Eucalyptus populnea, Callitris glaucophylla, Allocasuarina luehmannii shrubby woodland on alluvium |
| Structure code | Woodland |
| Description | Eucalyptus populnea and/or E. melanophloia woodland. Other canopy species include Callitris glaucophylla, E. crebra, E. chloroclada and Angophora leiocarpa. A secondary tree or shrub layer may occur, including Allocasuarina luehmannii, Callitris glaucophylla, Geijera parviflora, Eremophila mitchellii and Alstonia constricta. The ground layer is usually dominated by perennial grasses, including Bothriochloa decipiens, Enteropogon acicularis, Triraphis mollis, Eragrostis lacunaria and Aristida spp. Occurs on levees, higher alluvial plains and terraces associated with drainage lines. The soils are mainly deep, uniform red sands, or deep, texture contrast soils with a sandy, thick surface horizon overlying neutral, blocky to massive subsoil's. Small areas occur on red massive earths and alluvial soils. Not a Wetland. (BVG1M: 17a). |
| Supplementary description | Dawson (1987), 12, 15, 18; Galloway et al. (1974), LU63; Mullins (1980), Toombilla, Broadwater; Neldner (1984), 19b (45); Taylor and Grimshaw (1994-95), Goondiwindi MU5A and MU9B |
| Protected areas | Chesterton Range NP, Carnarvon NP, Southwood NP, Lake Broadwater CP |
| Fire management guidelines | SEASON: Late wet to early dry season when there is good soil moisture. Early storm season or after good spring rains. INTENSITY: Low to moderate. INTERVAL: 6 -10 years. INTERVAL_MIN: 6. INTERVAL_MAX: 10. STRATEGY: Restrict to less than 30-60% in any year. Rotate burns in mosaic patches. Maintain fire management of surrounding country so that wildfires will be very limited in extent. Burn under conditions of good soil moisture and when plants are actively growing. ISSUES: Maintaining a fire mosaic will ensure protection of fauna habitats (such as dense stands of A. luehmannii) and mitigate against wildfires. Allocasuarina luehmannii (bull oak) can be both killed by fire and regenerate from seed following fire. Bull oak thickening/creation of whipstick communities may be controlled with planned low intensity burns. Drought index will help deliver required guideline. Jewel butterfly is significant in this community, but the jewel butterfly needs thick leaf litter/mature bull oak; so high intensity fire (or fire that removes the litter layer) could be detrimental to survival. Allocasuarina is also an important food source for glossy-black cockatoo. |
| Comments | 11.3.18: This regional ecosystem is restricted to the southern part of 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.
