Regional ecosystem details for 1.7.2
| Regional ecosystem | 1.7.2 |
|---|---|
| Vegetation Management Act class | Least concern |
| Wetlands | Not a Wetland |
| Biodiversity status | No concern at present |
| Subregion | 1, (2), (3), (4.7) |
| Estimated extent1 | Pre-clearing 63000 ha; Remnant 2021 63000 ha |
| Short description | Eucalyptus pruinosa +/- Eucalyptus leucophloia low open woodland on eroded Tertiary surfaces |
| Structure code | Low Open Woodland |
| Description | Eucalyptus pruinosa low open woodland, often with Eucalyptus leucophloia. A shrub layer of Acacia citriodora may be present. Ground cover of Triodia pungens and tussock grasses. Occurs on eroded Tertiary surfaces. Not a Wetland. (BVG1M: 19c). Vegetation communities in this regional ecosystem include: 1.7.2a: Eucalyptus pruinosa low open woodland, often with Eucalyptus leucophloia. A shrub layer of Acacia citriodora may be present. Ground cover of Triodia pungens and tussock grasses. Occurs on eroded Tertiary surfaces. Shallow red/brown earths overlying ferricrete. Not a Wetland. (BVG1M: 19c). 1.7.2b: [RE not in use]²: This vegetation community is now mapped as 1.5.13. Lysiphyllum cunninghamii low open woodland +/- Eucalyptus pruinosa subsp. pruinosa with scattered shrub layer of Carissa lanceolata and/or Acacia spp. And ground layer of tussock grasses. Occurs on eroded Tertiary surfaces; calcareous red-brown earths. Not a Wetland. (BVG1M: 19c). 1.7.2x1: [RE not in use]²: This vegetation community is now mapped as 1.7.7b. Eucalyptus miniata and/or Corymbia capricornia low open woodland +/- Eucalyptus pruinosa with a dense shrub layer of Acacia calligera and sparse mixed ground layer. Occurs on the edges of sandsheets overlying Tertiary surfaces. Not a Wetland. (BVG1M: 19c). |
| 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. Ensure some areas are long (10-20 years) unburnt. Adjust intervals/frequency according to rainfall-drought cycles, fuel accumulation and previous fire history. 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%. 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. Buffel grass can promote high intensity fire. Fuel loads tend to be higher where there is a mix of tussock and spinifex grasses. |
| Comments | 1.7.2: High total grazing pressure and spread of *Cenchrus pennisetiformis (Cloncurry buffel grass) are leading to changes in structure and floristics of native vegetation. |
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.
