Regional ecosystem details for 11.8.10
| Regional ecosystem | 11.8.10 |
|---|---|
| Vegetation Management Act class | Of concern |
| Wetlands | Not a Wetland |
| Biodiversity status | Of concern |
| Subregion | 10 |
| Estimated extent1 | Pre-clearing 40 ha; Remnant 2021 40 ha |
| Short description | Themeda triandra grassland on Cainozoic igneous rocks |
| Structure code | Tussock Grassland |
| Description | Themeda triandra tussock grassland, with a range of other associated tussock grasses including Heteropogon contortus, Aristida queenslandica var. dissimilis, Bothriochloa ewartiana and Cymbopogon obtectus. Forbs and sedges are also common including Brunoniella australis, Evolvulus alsinoides, Fimbristylis dichotoma and Phyllanthus virgatus. Isolated to scattered trees of Eucalyptus exserta may be present. Occurs on Cainozoic igneous rocks (trachyte). Not a Wetland. (BVG1M: 32b). |
| Supplementary description | Fensham and Holman (1998a) |
| Protected areas | Peak Range NP |
| Special values | 11.8.10: Never grazed by cattle, due to the inaccessibility of the landform. |
| Fire management guidelines | SEASON: Late wet to early dry season when there is good soil moisture. Implement storm burning when there is sufficient fuel. INTERVAL: 2 - 5 years. INTERVAL_MIN: 2. INTERVAL_MAX: 5. STRATEGY: Begin burning soon after the wet season so that fires will carry only a small distance. Patchy burns are preferred. Burn less than 30% in any year. Burn under conditions of good soil moisture and when plants are actively growing. Where woody thickening is an issue, implement burns soon after high rainfall events, before woody seedlings become established. ISSUES: Patchy burning within grasslands provides an appropriate mix of fresh and older tussocks and regenerates associated herbs. Fire can be used to control weed invasions, although there are also risks of promoting weeds. Encroachment of woody-stemmed plants (Acacia/Atalaya) through over-grazing and lack of burning may be a problem. Ensure open grassland plains are maintained; create a patchily burnt landscape. |
| Comments | 11.8.10: This regional ecosystem is restricted to the plateau surface of Lord's Table Mountain, which is a Tertiary basalt mesa that has been protected from weathering because of its resistant trachytic lava cap (Galloway, 1967). Lord's Table Mountain. Naturalised species associated with this regional ecosystem include *Melinis repens. |
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.
