Regional ecosystem details for 2.3.72
| Regional ecosystem | 2.3.72 |
|---|---|
| Vegetation Management Act class | Least concern |
| Wetlands | Not a Wetland |
| Biodiversity status | Of concern |
| Subregion | 4, (1), (6), (3.8) |
| Estimated extent1 | Pre-clearing 352000 ha; Remnant 2021 340000 ha |
| Short description | Corymbia spp. and Erythrophleum chlorostachys in mixed woodlands on levees in active Quaternary alluvial systems (river deltas) |
| Structure code | Woodland |
| Description | Mixed woodland, including combinations of the species Corymbia bella, Corymbia polycarpa, C. curtipes, C. confertiflora and Erythrophleum chlorostachys. Occasional canopy species include Parinari nonda, Eucalyptus pruinosa and E. leptophleba. A secondary tree layer commonly occurs, including canopy species, Melaleuca spp., Planchonia careya, Lysiphyllum cunninghamii and Terminalia spp. The ground layer is tussock grasses, including Heteropogon contortus, Panicum spp. and Chrysopogon fallax. Occurs on levees in active Quaternary alluvial systems (river deltas). Brown sands and loams. Not a Wetland. (BVG1M: 16b). Vegetation communities in this regional ecosystem include: 2.3.72a: Corymbia bella and C. curtipes woodland, commonly with C. confertiflora and C. polycarpa. A secondary tree layer commonly occurs, including canopy species, Planchonia careya, Lysiphyllum cunninghamii and Terminalia spp. A sparse shrub layer may occur. The ground layer is commonly dominated by Heteropogon contortus. Occurs on levees in active Quaternary alluvial systems (inner zones of river deltas). Brown sands and sandy loam soils. Riverine. (BVG1M: 16b). 2.3.72b: Mixed woodland, including combinations of the species Corymbia polycarpa, C. confertiflora, C. curtipes and Erythrophleum chlorostachys. Occasional canopy species include C. bella, Parinari nonda, Eucalyptus pruinosa and E. leptophleba. A diverse lower tree layer commonly occurs, including Melaleuca spp., Lysiphyllum cunninghamii, Terminalia spp., Planchonia careya and Syzygium eucalyptoides. The ground layer is tussock grasses, including Heteropogon contortus, Panicum spp. and Chrysopogon fallax. Occurs on levees in active Quaternary alluvial systems (outer zones of river deltas). Brown sandy loam and sandy clay loam soils. Not a Wetland. (BVG1M: 16b). |
| Protected areas | Errk Oykangand NP (CYPAL) |
| 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 | 2.3.72: Commonly invaded by *Cryptostegia grandiflora (rubber vine) and *Mesosphaerum suaveolens (hyptis). Subject to degradation from high total grazing pressure, particularly in the wet season. 2.3.72a: Was previously mapped as 2.3.21a and 2.3.21i. Commonly invaded by *Cryptostegia grandiflora (rubber vine) and *Mesosphaerum suaveolens (hyptis). Subject to degradation from high total grazing pressure, particularly in the wet season. 2.3.72b: Was previously mapped as 2.3.21g. Commonly invaded by *Cryptostegia grandiflora (rubber vine) and *Mesosphaerum suaveolens (hyptis). Subject to degradation from high total grazing pressure, particularly in the wet season. |
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.
