Regional ecosystem details for 10.3.17
| Regional ecosystem | 10.3.17 |
|---|---|
| Vegetation Management Act class | Of concern |
| Wetlands | Contains Palustrine |
| Biodiversity status | Endangered |
| Subregion | 2, (1) |
| Estimated extent1 | Pre-clearing 12000 ha; Remnant 2021 9000 ha |
| Short description | Acacia excelsa and Grevillea striata low open woodland on lake-fringing dunes |
| Structure code | Low Open Woodland |
| Description | Acacia excelsa and Grevillea striata low open woodland on lake fringing dunes over a calcrete hardpan adjacent to Lake Galilee and Acacia salicina and Grevillea striata with A. excelsa low open woodland on fringing dunes of Lake Buchanan. Occurs on lake fringing dunes over a calcrete hardpan adjacent to Lake Galilee. Contains Palustrine. (BVG1M: 27c). Vegetation communities in this regional ecosystem include: 10.3.17a: Mixed woodland with a combination of the species: Acacia excelsa, Alectryon oleifolius, Grevillea striata, Geijera parviflora, Ventilago viminalis, Acacia salicina, Atalaya hemiglauca, Eucalyptus brownii and Eucalyptus coolabah. Occurs on dunes fringing Lake Galilee. Occurs on lake fringing dunes over a calcrete hardpan. Not a Wetland. (BVG1M: 27c). 10.3.17b: Acacia salicina and Grevillea striata woodland, commonly with Acacia excelsa and Atalaya hemiglauca. Short mixed ground layer including Tripogon loliiformis, Perotis rara and Fimbristylis dichotoma. Occurs on lake-fringing dunes over a calcrete hardpan. Not a Wetland. (BVG1M: 27c). 10.3.17x1: Acacia stenophylla low woodland with Diplachne fusca dominated ground layer. Occurs on clay plains on bed of Lake Galilee. Palustrine. (BVG1M: 27c). |
| Supplementary description | Gunn et al. (1967), G; Lorimer (1998), Qd1; Thompson and Turpin (in prep), A2c, A2d |
| Special values | 10.3.17: Dunes are specific indicators of past climates and have significant scientific values. Sedgelands are seasonally significant feeding and breeding areas for waterfowl. This ecosystem is habit for Fimbristylis buchananensis, a DEU endemic species. 10.3.17x1: s. |
| Fire management guidelines | SEASON: Wet to mid-dry season. Avoid late dry (August -September) as intensity will be too high (August -September). INTENSITY: Low. INTERVAL: 6-10 years, but will depend on seasonal conditions and grazing pressure. INTERVAL_MIN: 6. INTERVAL_MAX: 10. STRATEGY: These communities generally have sparse ground layer. Will only burn following irregular high rainfall events. Fire is not generally applied directly to acacia dominated communities, but to surrounding fire-adapted communities in order to create a landscape mosaic of burnt/unburnt areas to mitigate against wildfire. Ensure fires are patchy. ISSUES: Acacias are fire sensitive and may be killed by high intensity or too frequent fire. |
| Comments | 10.3.17: Threatening processes include very high total grazing pressure. Widespread soil and pasture degradation. The deep fine sandy topsoil's have very low fertility and are extremely susceptible to wind erosion. 10.3.17a: Largely restricted to on lake-fringing dunes adjacent to Lake Galilee. One other unconfirmed location occurs at Lake Barcoorah. 10.3.17b: Endemic to Lake Buchanan; occurs on lake-fringing dunes. |
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.
