Regional ecosystem details for 10.3.21
| Regional ecosystem | 10.3.21 |
|---|---|
| Vegetation Management Act class | Of concern |
| Wetlands | Not a Wetland |
| Biodiversity status | Endangered |
| Extent in reserves | This vegetation community is now mapped as 10.3.17b. |
| Short description | Acacia salicina and Grevillea striata low open woodland on sandy alluvial plains |
| Structure code | Low Open Woodland |
| Description | [RE not in use]²: This vegetation community is now mapped as 10.3.17b. Acacia salicina and Grevillea striata dominate the very sparse canopy. Corymbia plena present on deeper sands. Acacia salicina and Grevillea striata dominate the very sparse canopy. The ground layer is dominated by species including Eriachne mucronata, Fimbristylis dichotoma and Sphaeromorphaea australis. Occurs on sandy alluvial deposits overlying old lake bed clays. Not a Wetland. (BVG1M: 27c). |
| Supplementary description | Lorimer (1998), Ql7; Thompson and Turpin (in prep), A2 |
| Special values | 10.3.21: Part of habitat complex associated with Lake Buchanan, seasonally significant for water bird nesting and feeding. Habitat for threatened flora species including Lawrencia buchananensis. Fimbristylis buchananensis which is a DEU endemic has been recorded in this ecosystem. Habitat for Calotis sp. (Lake Buchanan J.Kemp+ 3384H). Also habitat for poorly known species Pterocaulon intermedium. |
| 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 | 10.3.21: Endemic to Lake Buchanan. Subject to very high total grazing pressure. Widespread soil and pasture degradation. The deep sandy topsoil's have very low fertility and are highly prone to drying out. These factors greatly limit the duration, quality and quantity of native annual pasture. |
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.
2 Superseded: Revision of the regional ecosystem classification removed this regional ecosystem code from use. It is included in the regional ecosystem description database because the RE code may appear in older versions of RE mapping and the Vegetation Management regulation.
