Regional ecosystem details for 9.11.13
| Regional ecosystem | 9.11.13 |
|---|---|
| Vegetation Management Act class | Least concern |
| Wetlands | Not a Wetland |
| Biodiversity status | No concern at present |
| Subregion | 3, (2.4), (2) |
| Estimated extent1 | Pre-clearing 30000 ha; Remnant 2021 29000 ha |
| Short description | Eucalyptus cullenii and Corymbia hylandii or C. erythrophloia open woodland on undulating plains and rises |
| Structure code | Open Woodland |
| Description | Open woodland to low open woodland of Eucalyptus cullenii (Cullen's ironbark) and Corymbia hylandii (Hyland's bloodwood) or C. erythrophloia (with C. hylandii codominant in the north and C. erythrophloia codominant in the south) +/- E. leptophleba (Molloy red box) +/- C. dallachiana (Dallachy's gum). A sparse sub-canopy of canopy species can occur. The shrub layer is absent to sparse and includes Planchonia careya (cocky apple), Terminalia spp., Petalostigma banksii (smooth-leaved quinine) and Grevillea mimosoides. The mid-dense ground layer is grassy and dominated by Heteropogon contortus (black speargrass), Sarga plumosum (plume sorghum) and Themeda triandra (kangaroo grass). Occurs on red kandosols derived from limestone on undulating plains and rises. Not a Wetland. (BVG1M: 13a). |
| Protected areas | Chillagoe-Mungana Caves NP |
| Fire management guidelines | SEASON: Early dry season and storm time. Timing of early dry season burns will vary depending on seasonal conditions; it may sometimes commence as early as March. INTENSITY: Low, with occasional moderate. INTERVAL: 2-5 year intervals with longer unburnt patches. Fuel loads tend to reach a maximum after 2-3 years. Ensure burn programs occur after big wet season as fuel loads will be higher than average. INTERVAL_MIN: 2. INTERVAL_MAX: 5. STRATEGY: Burn less than 40% across the landscape in any year. Burning through the early dry season will produce a network of burns that will contain later fires. Fires will only gain in intensity as the dry season progresses. Grass composition can be affected by timing and intensity of fire. Occasional moderate fire will help to reduce overabundant trees that could potentially suppress ground layer vegetation. ISSUES: Leave areas of long unburnt vegetation to maintain a diversity of habitat for wildlife. |
| Comments | 9.11.13: This unit is distinguished from 9.11.3 and 9.11.12 by the origin of its soils and the different subdominant species. This may include some areas mapped as geology TQr with soils derived from transported limestone sediments. Restricted to the Chillagoe and Palmerville area in the north of the bioregion. |
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.
