Regional ecosystem details for 1.5.6
| Regional ecosystem | 1.5.6 |
|---|---|
| Vegetation Management Act class | Least concern |
| Wetlands | Not a Wetland |
| Biodiversity status | No concern at present |
| Subregion | 3, 1, (4.2), (4.7), (2.8), (4.3), (2.3), (2) |
| Estimated extent1 | Pre-clearing 313000 ha; Remnant 2021 313000 ha |
| Short description | Atalaya hemiglauca, Ventilago viminalis, Grevillea striata low open woodland on red earth plains |
| Structure code | Low Open Woodland |
| Description | Atalaya hemiglauca, Acacia cambagei, Acacia excelsa, Ventilago viminalis, Grevillea striata, Hakea lorea subsp. lorea, Ehretia saligna, Corymbia terminalis and C. aparrerinja low open woodland. Shrubby understorey includes Acacia spp. and Carissa lanceolata. Occasional Acacia aneura in the west. Areas dominated by Ventilago viminalis in the Camooweal area. Ground cover dominated by Aristida contorta, sometimes forming grasslands. Occurs on outwash plains from ranges of strongly folded pre-Cambrian rocks, usually adjacent to clay plains; red earths and clays. Not a Wetland. (BVG1M: 27b). Vegetation communities in this regional ecosystem include: 1.5.6a: [RE not in use]²: This vegetation community is now mapped as 1.5.15. Aristida contorta annual grasslands, usually with Aristida inaequiglumis, that are bare for most of the year and can be dominated by forbs. Occurs on older alluvium. Not a Wetland. (BVG1M: 31b). 1.5.6b: [RE not in use]²: This vegetation community is now mapped as 4.5.8x1. Aristida latifolia tussock grassland with scattered emergent trees including Atalaya hemiglauca, Grevillea striata, Eucalyptus pruinosa and Corymbia terminalis. Occurs on older alluvium and outwash areas with significant clay content. Not a Wetland. (BVG1M: 31b). 1.5.6c: Mixed low open woodland including Atalaya hemiglauca, Acacia excelsa, Acacia cambagei, Ventilago viminalis, Grevillea striata, Hakea lorea subsp. lorea, Ehretia saligna, Corymbia terminalis and C. aparrerinja. Scattered shrub layer includes Acacia spp. and Carissa lanceolata. Mixed ground layer usually dominated by Aristida contorta, sometimes forming grasslands. Areas of Acacia aneura are occasionally present. Occurs on outwash plains from ranges of strongly folded pre-Cambrian rocks, usually adjacent to clay plains; red earths and clays. Not a Wetland. (BVG1M: 27a). 1.5.6d: Ventilago viminalis low open woodland, often with Atalaya hemiglauca, Eucalyptus pruinosa, Erythrina vespertilio. Sometimes groved with Eulalia aurea grassland in open areas. Occurs on the margins of sandplains adjacent to clays; variety of medium-textured soils. Not a Wetland. (BVG1M: 27a). 1.5.6x1: [RE not in use]²: This vegetation community is now mapped as 1.5.6c. Variable low open woodland which may include Acacia cambagei, Grevillea striata, Atalaya hemiglauca, Acacia excelsa subsp. angusta, Corymbia spp., Eucalyptus spp., Hakea spp. and Owenia spp. with a scattered shrub layer dominated by Carissa lanceolata and a mixed ground layer of tussock grasses often with Triodia pungens. Includes areas of grassland. Soils include sandy loams, red earths and light clays. Occurs on outwash plains from ranges of pre-Cambrian rocks, usually adjacent to clay plains. Not a Wetland. (BVG1M: 26a). 1.5.6x2: [RE not in use]²: This regional ecosystem is now mapped as 1.5.16. Acacia cambagei low woodland with generally sparse ground layer of Triodia longiceps and/or tussock grasses. Bare patches are common. Occurs on older alluvial and residual soils. Not a Wetland. (BVG1M: 26a). |
| Supplementary description | Neldner (1991), 14, 40, 46; Perry et al. (1964), Quamby, Kuridala |
| Protected areas | Wiliyan-ngurru NP |
| Fire management guidelines | SEASON: Storm season to very early dry season. INTENSITY: Low with occasional moderate. INTERVAL: 4 - 10 years. Adjust intervals/frequency according to rainfall-drought cycles, fuel accumulation and previous fire history. c: > 30 years. INTERVAL_MIN: 4. INTERVAL_MAX: 100. STRATEGY: Ensure burns are undertaken across the landscape at a range of frequencies to create a mosaic of times since fire. Apply numerous small burns every year to achieve a mosaic and reduce risks of wildfire across vast areas of the landscape. Maintain burnt areas < 20%. c: Burn in association with surrounding country. Maintain mosaic burning in surrounding country to mitigate against spread of unplanned fire into acacia woodlands. ISSUES: Too frequent fire can promote annual grasses over perennial. Ensure areas with obligate seeders are left so that seed regeneration cycles can be maintained. Mixed shrubby woodlands contain fire-sensitive species and tend to grow in fire-sheltered areas. Sparse ground layer will inhibit the ability to burn. c: Acacia communities need fire for recruitment but make sure they occur at long intervals. Acacia communities are sensitive to high frequency intense fires. Buffel grass invasion can increase the potential for frequent and damaging fires. |
| Comments | 1.5.6: Community of arid landscapes that are usually sparsely vegetated. Occurs in the south and west of the bioregion. Prone to scalding. 1.5.6c: Prone to scalding. |
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.
