Regional ecosystem details for 2.5.22
| Regional ecosystem | 2.5.22 |
|---|---|
| Vegetation Management Act class | Least concern |
| Wetlands | Not a Wetland |
| Biodiversity status | No concern at present |
| Subregion | 3, 2, 5, 8 |
| Estimated extent1 | Pre-clearing 44000 ha; Remnant 2021 43000 ha |
| Short description | Corymbia spp., Eucalyptus pruinosa and Lysiphyllum cunninghamii in mixed woodlands on abandoned levees associated with clay plains |
| Structure code | Woodland |
| Description | Mixed woodland, including combinations of the species Corymbia terminalis, C. curtipes, Eucalyptus pruinosa, C. aparrerinja and Lysiphyllum cunninghamii. Occasional canopy species include C. confertiflora, Grevillea striata, C. grandifolia and C. polycarpa. A sparse, variable shrub layer may occur. The ground layer is tussock grasses, including Bothriochloa decipiens, Dichanthium fecundum and Heteropogon contortus. Occurs on abandoned levees and sand ridges associated with clay plains. Red-brown sandy loam soils. Not a Wetland. (BVG1M: 16b). Vegetation communities in this regional ecosystem include: 2.5.22a: Eucalyptus pruinosa, Corymbia terminalis and C. aparrerinja low woodland to woodland. A sparse, variable shrub layer may occur. The ground layer is tussock grasses, including Dichanthium fecundum, Eulalia aurea and Chrysopogon spp. Occurs on abandoned levees and sand ridges associated with old alluvial clay plains. Red-brown sandy loam soils. Not a Wetland. (BVG1M: 16b). 2.5.22b: Mixed woodland, including combinations of the species Corymbia curtipes, C. terminalis, Lysiphyllum cunninghamii, Eucalyptus pruinosa and C. confertiflora. Occasional canopy species include Grevillea striata, C. grandifolia and C. polycarpa. The ground layer is tussock grasses, including Bothriochloa decipiens and Heteropogon contortus. Contains small areas of Heteropogon contortus, Schizachyrium sp., Aristida spp. and Eragrostis sp. tussock grassland around the fringes. Occurs on abandoned levees and sand ridges associated with Tertiary clay plains. Red-brown sandy loam soils. Not a Wetland. (BVG1M: 16b). 2.5.22c: Corymbia terminalis and/or C. grandifolia subsp. grandifolia woodland, occasionally with Grevillea striata and C. confertiflora. A lower tree layer may occur, including canopy species, Hakea arborescens, Terminalia spp. And Melaleuca nervosa. A shrub layer may occur, including Carissa lanceolata and Flueggea virosa. The ground layer is perennial tussock grasses. Occurs on abandoned levees associated with Tertiary clay plains in the south of the bioregion. Red-brown sandy loam soils. Not a Wetland. (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. |
| Comments | 2.5.22a: Was previously mapped as 2.5.12x2a. 2.5.22b: Was previously mapped as 2.5.12x2b. 2.5.22c: Restricted to an area around the Saxby River, north of Julia Creek. |
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.
