Regional ecosystem details for 2.3.46
| Regional ecosystem | 2.3.46 |
|---|---|
| Vegetation Management Act class | Least concern |
| Wetlands | Riverine |
| Biodiversity status | Of concern |
| Subregion | 3, 8, (1.3), (2), (4.5), (4.3) |
| Estimated extent1 | Pre-clearing 49000 ha; Remnant 2021 48000 ha |
| Short description | Corymbia terminalis, C. aparrerinja +/- Lysiphyllum cunninghamii woodland on river levees in dry, southern parts of the bioregion |
| Structure code | Woodland |
| Description | Corymbia terminalis, C. aparrerinja woodland, commonly with Lysiphyllum cunninghamii. E. microtheca, Acacia cambagei, Grevillea striata, E. pruinosa, E. leucophylla and Atalaya hemiglauca may occur in the canopy. A variable shrub layer commonly occurs, including Acacia spp. and Carissa lanceolata. The ground layer is tussock grasses. Occurs on levees of watercourses extending from drier, southern parts of the Northwest Highlands bioregion. Red to brown sandy loam and silty loam soils. Riverine. (BVG1M: 16b). |
| Fire management guidelines | SEASON: Commence early in dry season as soon as ground fuels can carry fire with fire extinguishing early evening. Continue to mid-dry season. INTENSITY: Low to moderate with occasional high intensity. INTERVAL: 1-5 years, but do not burn the same patches annually. Landscape mosaic should consist of patches with different times since burning. INTERVAL_MIN: 1. INTERVAL_MAX: 5. STRATEGY: Break up continuity of fuel across the landscape so that impact of late-season wildfire is minimised. Wildfire due to dry storms late in the dry season or in the early wet are natural occurrences, but they can burn over a wide area of the landscape with unwanted intensity and frequency. Use broad scale mosaic burning. ISSUES: Overabundant seedlings and saplings can lead to woody thickening if unchecked by fire. A long absence of fire or low intensity fire too early in the season may lead to overabundant seedlings and saplings. If ground fuels are sparse spell pastures prior to planned burns. Weeds such as buffel grass and rubbervine may be an issue for some tussock grass communities because weeds increase fuel loads leading to high intensity fires. Overgrazing can reduce fuel loads and give woody species a competitive advantage. |
| Comments | 2.3.46: Was previously mapped as 2.3.18x1. Subject to degradation from high total grazing pressure and invasion by exotic species, particularly *Cenchrus pennisetiformis. |
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.
