Regional ecosystem details for 9.12.42
| Regional ecosystem | 9.12.42 |
|---|---|
| Vegetation Management Act class | Of concern |
| Wetlands | Not a Wetland |
| Biodiversity status | Endangered |
| Subregion | 3 |
| Estimated extent1 | Pre-clearing 500 ha; Remnant 2021 500 ha |
| Short description | Schizachyrium fragile and Dichanthium sericeum grassland on undulating hills on pre-Cainozoic mafic igneous rocks |
| Structure code | Tussock Grassland |
| Description | Mixed tussock grassland dominated by Schizachyrium fragile (firegrass) and Dichanthium sericeum +/- Sarga sp. +/- Heteropogon contortus (black speargrass). Very sparsely wooded with low trees and shrubs including Corymbia spp., Cochlospermum spp. and Terminalia aridicola (arid peach). Occurs on undulating hills on pre-Cainozoic mafic igneous rocks. Not a Wetland. (BVG1M: 30b). |
| Special values | 9.12.42: A naturally restricted regional ecosystem. |
| Fire management guidelines | INTERVAL: Fire return interval flexible. INTERVAL_MIN: 100. INTERVAL_MAX: 100. STRATEGY: Ground fuels are typically sparse. Burn in association with surrounding country. ISSUES: This is a fire tolerant vegetation community, but will burn rarely owing to sparse fuels. Maintaining a fire mosaic in surrounding landscape will mitigate against wildfires. |
| Comments | 9.12.42: Small outcrops are dominated by Schizachyrium fragile and lower areas are dominated by Dichanthium sericeum. Occurs in a restricted range north of Chillagoe in the north of the bioregion. The naturalised species Mitracarpus hirtus* occurs in this community. Prone to invasion by the weed Themeda quadrivalvis (grader grass). |
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.
