Regional ecosystem details for 1.7.7
| Regional ecosystem | 1.7.7 |
|---|---|
| Vegetation Management Act class | Least concern |
| Wetlands | Not a Wetland |
| Biodiversity status | No concern at present |
| Subregion | 3, 4, 1, (2.7), (2.8), (2.2), (2), (4.7) |
| Estimated extent1 | Pre-clearing 575000 ha; Remnant 2021 575000 ha |
| Short description | Corymbia capricornia +/- Eucalyptus leucophloia or E. miniata low open woodland on silcrete |
| Structure code | Low Open Woodland |
| Description | Low open woodland of Corymbia capricornia, commonly with Eucalyptus leucophloia. Eucalyptus miniata, Eucalyptus herbertiana and Corymbia ferruginea are commonly present in the north. Mixed shrub layer usually including Grevillea wickhamii. Ground layer of Triodia spp. and Schizachyrium fragile. Occurs on silcrete. Not a Wetland. (BVG1M: 19a). Vegetation communities in this regional ecosystem include: 1.7.7a: Low open woodland of Corymbia capricornia, often with Eucalyptus leucophloia. Mixed shrub layer usually including Grevillea wickhamii. Ground layer of Triodia pungens and/or Triodia bitextura. Occurs on silcrete. Not a Wetland. (BVG1M: 19a). 1.7.7b: Corymbia capricornia and/or Eucalyptus miniata low open woodland often with Eucalyptus herbertiana, Eucalyptus leucophloia and/or Corymbia ferruginea. Eucalyptus tetrodonta may be present in the far north. A second tree layer of Terminalia canescens may be present. The shrub layer is mixed and includes Petalostigma quadriloculare, Grevillea dryandri, Terminalia canescens and Acacia calligera. Ground layer of Triodia spp. and tussock grasses. Occurs on silcrete and lateritic surfaces. Not a Wetland. (BVG1M: 19a). |
| Protected areas | Boodjamulla (Lawn Hill) NP, Lawn Hill (Stockyard Creek) RR, Lawn Hill (Arthur Creek) RR, Lawn Hill (Littles Range) RR, Lawn Hill (Widdallion) RR, Lawn Hill (Gorge Mouth) RR, Lawn Hill (Lilydale) RR |
| Special values | 1.7.7: Potential habitat for NCA listed species: Ipomoea antonschmidii. |
| 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. 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. Shrub diversity may decline over time since fire. b: Fuel loads tend to be higher where there is a mix of tussock and spinifex grasses. |
| Comments | 1.7.7: This vegetation community was previously mapped as 1.7.1x3. 1.7.7a: This vegetation community was previously mapped as 1.7.1x3a. Widespread in high points in the landscape in the south and centre of the bioregion. 1.7.7b: This vegetation community was previously mapped as 1.7.1x3b. Occurs widely in the north of the bioregion particularly on silcrete or ferricrete capping on and adjacent to Proterozoic sandstone formations. |
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.
