Regional ecosystem details for 9.11.30
| Regional ecosystem | 9.11.30 |
|---|---|
| Vegetation Management Act class | Least concern |
| Wetlands | Not a Wetland |
| Biodiversity status | No concern at present |
| Subregion | 1, 2.6, 2, (2.9) |
| Estimated extent1 | Pre-clearing 18000 ha; Remnant 2021 18000 ha |
| Short description | Acacia leptostachya low woodland with emergents on stony and rocky metamorphic hills |
| Structure code | Low Woodland |
| Description | Low woodland to tall shrubland of Acacia leptostachya (slender wattle) with emergent Eucalyptus spp. or Corymbia spp. The shrub layer is sparse to mid-dense and the ground layer is sparse grassy. Occurs on very stony and rocky hills. Not a Wetland. (BVG1M: 24a). Vegetation communities in this regional ecosystem include: 9.11.30a: Low woodland to tall shrubland of Acacia leptostachya (slender wattle) +/- Erythrophleum chlorostachys (Cooktown ironwood) with emergents of Eucalyptus chartaboma (Queensland flaky-bark) and/or Erythrophleum chlorostachys (Cooktown ironwood) and/or Corymbia pocillum. An open to mid-dense shrub layer of juvenile canopy species, Calytrix spp. and Petalostigma banksii (smooth-leaved quinine) is present. The ground layer is grassy and dominated by Schizachyrium spp. (firegrass). Occurs on rocky hills. Not a Wetland. (BVG1M: 24a). 9.11.30b: Low woodland to tall shrubland of Acacia leptostachya with emergents of Corymbia pocillum or Eucalyptus whitei (White's ironbark). The shrub layer contains scattered shrubs of Petalostigma banksii (smooth-leaved quinine) and Alphitonia spp. The ground layer is a sparse grassy and dominated by Schizachyrium spp. Occurs on steep rocky hills. Not a Wetland. (BVG1M: 24a). |
| Supplementary description | Perry et al. (1964): Belmore ; Perry et al. (1964): Belmore Unit 1; Perry et al. (1964): Leichhardt Unit 1 |
| Protected areas | Littleton NP, Rungulla RR, Littleton RR, Rungulla NP |
| Fire management guidelines | INTERVAL: 10-50 years generally following periods of high rainfall and sufficient grass growth. INTERVAL_MIN: 10. INTERVAL_MAX: 50. STRATEGY: Burn surrounding country to mitigate intensity and extent of unplanned fire. ISSUES: A. leptostachya are obligate seeders and require fire-free intervals of 5-8 years to maintain community. Vulnerable to frequent and high intensity fire. |
| Comments | 9.11.30: The vegetation communities associated with this regional ecosystem are distinguished by different shrub layers. Occurs in the west of the bioregion between Georgetown and Croydon. 9.11.30a: Restricted mainly to hills east of Croydon in the west of the bioregion. 9.11.30b: Occurs in isolated patches south of Georgetown in the west of the bioregion. |
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.
