Regional ecosystem details for 1.7.1
| Regional ecosystem | 1.7.1 |
|---|---|
| Vegetation Management Act class | Least concern |
| Wetlands | Not a Wetland |
| Biodiversity status | No concern at present |
| Subregion | 2, 1, 3, (4), (2.2), (2.8), (4.3), (2.7), (4.7), (4.2) |
| Estimated extent1 | Pre-clearing 421000 ha; Remnant 2021 420000 ha |
| Short description | Eucalyptus leucophloia low open woodland on silcrete and lateritic surfaces |
| Structure code | Low Open Woodland |
| Description | Low open woodland of Eucalyptus leucophloia and/or Corymbia aspera and/or E. normantonensis over Triodia spp. Occurs on lateritic surfaces and on silcrete. Not a Wetland. (BVG1M: 19a). Vegetation communities in this regional ecosystem include: 1.7.1a: Eucalyptus leucophloia low open woodland. E. normantonensis may occur in the south of the bioregion. Triodia spp. ground layer. Occurs on lateritic surfaces and on silcrete. Not a Wetland. (BVG1M: 19a). 1.7.1b: [RE not in use]²: This vegetation community is now mapped as 1.7.5. Scalds or sparse annual forblands or sparse annual tussock grasslands. Occurs on exposed kaolinite. Not a Wetland. (BVG1M: 24a). 1.7.1c: [RE not in use]²: This vegetation community is now mapped as 1.7.3. Triodia pungens hummock grassland. Occurs on lateritic surfaces and on silcrete. Not a Wetland. (BVG1M: 19a). 1.7.1d: [RE not in use]²: This vegetation community is now mapped as 1.7.4. Triodia brizoides and/or Triodia molesta hummock grassland often with emergent shrubs of Acacia spp., Senna spp. and Eremophila spp. Occurs in scattered patches on eroded plateaus on skeletal soils formed largely on the exposed weathered zone. Not a Wetland. (BVG1M: 24a). 1.7.1e: Eucalyptus leucophloia low open woodland. An Acacia spp. shrub layer may be present. The ground layer is dominated by Triodia pungens. Occurs on silcrete overlying limestone. Not a Wetland. (BVG1M: 19a). 1.7.1f: [RE not in use]²: This vegetation community is now mapped as 1.5.3. Low open woodland to low woodland of Eucalyptus leucophloia, scattered shrub layer of Acacia spp. and a sparse ground layer of Triodia pungens and/or tussock grasses +/- treeless areas. Occurs on small patches of deeper soils on the edge of eroding tertiary surfaces. Not a Wetland. (BVG1M: 19a). 1.7.1g: [RE not in use]²: This vegetation community is now mapped as 1.7.5a. Low open forest of Acacia shirleyi. Occurs on the edge of eroding tertiary surfaces. Not a Wetland. (BVG1M: 24a). 1.7.1h: [RE not in use]²: This vegetation community is now mapped as 1.7.6. Low woodland of Acacia shirleyi with a shrub layer of Acacia shirleyi with a sparse mixed ground layer on red soil plains. Occurs on the edge of eroding tertiary surfaces. Not a Wetland. (BVG1M: 24a). 1.7.1i: [RE not in use]²: This vegetation community is now mapped as 1.9.5b. Open mallee shrubland of Eucalyptus leucophylla with a ground layer of Triodia pungens. Occurs on the edge of eroding tertiary surfaces. Not a Wetland. (BVG1M: 19b). 1.7.1j: [RE not in use]²: This vegetation community is now mapped as 1.7.1a. Low open woodland to low woodland of Eucalyptus leucophloia over a ground layer of Triodia pungens +/- tussock grasses. On limestone around the edge of eroding Tertiary surfaces. Not a Wetland. (BVG1M: 19a). 1.7.1k: [RE not in use]²: This vegetation community is now mapped as 1.9.4c. Low open woodland of Corymbia terminalis with a second tree layer of Ventilago viminalis and Atalaya hemiglauca and with a mixed ground layer dominated by Enneapogon polyphyllus and/or Aristida spp. +/- sink holes. On limestone around the edge of eroding Tertiary surfaces. Not a Wetland. (BVG1M: 19a). 1.7.1x1: [RE not in use]²: This regional ecosystem is now mapped as 1.7.5. Acacia shirleyi low woodland to low open forest. Occurs on laterite. Not a Wetland. (BVG1M: 24a). 1.7.1x2: [RE not in use]²: This regional ecosystem is now mapped as 1.7.6. Acacia shirleyi low woodland with a shrub layer of Acacia shirleyi with a sparse mixed ground layer on red soil plains. Occurs on shallow soils overlying laterite. Not a Wetland. (BVG1M: 24a). 1.7.1x3: [RE not in use]²: This regional ecosystem is now mapped as 1.7.7. Low open woodland of Corymbia capricornia, often with Eucalyptus leucophloia. Mixed shrub layer usually including Grevillea wickhamii. Ground layer of Triodia pungens and Schizachyrium fragile. Occurs on silcrete. Not a Wetland. (BVG1M: 19a). 1.7.1x3a: [RE not in use]²: This vegetation community is now mapped as 1.7.7a. Low open woodland of Corymbia capricornia, often with Eucalyptus leucophloia. Mixed shrub layer usually including Grevillea wickhamii. Ground layer usually dominated Triodia pungens. Occurs on silcrete. Not a Wetland. (BVG1M: 19a). 1.7.1x3b: [RE not in use]²: This vegetation community is now mapped as 1.7.7b. Corymbia capricornia low open woodland often with Eucalyptus miniata, Eucalyptus herbertiana, Eucalyptus leucophloia and/or Corymbia ferruginea with a Petalostigma quadriloculare dominated shrub layer and ground layer of Triodia bitextura and tussock grasses. Occurs on silcrete. Not a Wetland. (BVG1M: 19a). 1.7.1x4: [RE not in use]²: This vegetation community is now mapped as 1.7.1e. Low open woodland of Eucalyptus leucophloia +/- Acacia spp. shrub layer and ground layer of Triodia pungens. Occurs on silcrete overlying limestone. Not a Wetland. (BVG1M: 19a). 1.7.1x5: [RE not in use]²: This vegetation community is now mapped as 1.7.7b. Low woodland of Corymbia capricornia often with Eucalyptus miniata and/or Eucalyptus herbertiana and/or Eucalyptus leucophloia and/or Corymbia ferruginea with a Petalostigma quadriloculare dominated shrub layer and ground layer of Triodia bitextura and tussock grasses. Occurs on silcrete. Not a Wetland. (BVG1M: 19a). |
| Supplementary description | Christian et al. (1954), Yelvertoft, Wonorah; Perry et al. (1964), Torwood; Neldner (1991), 30 |
| Protected areas | Boodjamulla (Lawn Hill) NP, Lawn Hill (Stockyard Creek) RR, Wiliyan-ngurru NP, Lawn Hill (Lilydale) RR, Lawn Hill (Littles Range) RR, Lawn Hill (Widdallion) RR, Lawn Hill (Gregory) RR |
| Special values | 1.7.1: Potential habitat for NCA listed species: Solanum carduiforme, Trachymene glandulosa. |
| Fire management guidelines | SEASON: Storm season to early dry season. INTENSITY: Low to moderate. INTERVAL: 4 - 10 years. Ensure some areas are long (10-20 years) unburnt. Adjust intervals/frequency according to rainfall-drought cycles, fuel accumulation and previous fire history. a: >30 years. INTERVAL_MIN: 4. INTERVAL_MAX: 20. 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%. a: Burn in association with surrounding country. Maintain mosaic burning in surrounding country to mitigate against spread of unplanned fire into acacia woodlands. ISSUES: Rainfall is a major factor affecting spinifex growth, such that a very wet year or a series of wet years may boost the spinifex fuel load leading to the possibility of extensive wildfire in subsequent years. a: 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. |
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.
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.
