Regional ecosystem details for 3.3.18
| Regional ecosystem | 3.3.18 |
|---|---|
| Vegetation Management Act class | Least concern |
| Wetlands | Not a Wetland |
| Biodiversity status | No concern at present |
| Extent in reserves | This regional ecosystem is now mapped as 3.3.20. |
| Short description | Corymbia clarksoniana +/- C. dallachiana woodland on alluvial plains |
| Structure code | Woodland |
| Description | [RE not in use]²: This regional ecosystem is now mapped as 3.3.20. Corymbia clarksoniana (Clarkson's bloodwood) dominates the sparse to mid-dense canopy (18-25m tall). Corymbia dallachiana (Dallachy's gum) or C. papuana (ghost gum) and Erythrophleum chlorostachys (Cooktown ironwood) are frequent subdominant trees. Lophostemon suaveolens (swamp mahogany) and Melaleuca dealbata (paperbark) are also sometimes present. M. nervosa (teatree) is a consistent sub-canopy tree but a number of other species are often present in this layer (6-18m tall). The sparse shrub layer (0.5-2m tall) is composed of a variety of species particularly Erythrophleum chlorostachys and Alphitonia pomaderroides (soapwood). The ground layer is sparse to dense and dominated by the grasses Heteropogon triticeus (giant speargrass), H. contortus (black speargrass), Themeda triandra (kangaroo grass) and Panicum spp. (native panic). Occurs on alluvial plains. Not a Wetland. (BVG1M: 9e). |
| Supplementary description | Neldner and Clarkson (in prep), 61 |
| Fire management guidelines | SEASON: Commence planned burns early in the dry season, after the wet season when dry enough to burn. Use occasional storm burns but generally avoid periods of extremely hot, dry conditions. INTENSITY: Low to moderate with occasional high during storm burns. INTERVAL: 1-3 years. INTERVAL_MIN: 1. INTERVAL_MAX: 3. STRATEGY: Apply a mosaic across the landscape at a range of intervals to create varying stages of post-fire response. Burn 30-60% at the property level. ISSUES: To mitigate against the impact of late dry season fires, commence burning early in the season and continue through the dry to break up continuity of fuels across the landscape. These communities require particular management attention due to issues of grazing, weed invasion, rapid fuel accumulation, poor access and woody thickening. Fuel can reach maximum accumulation in 2 years. |
| Comments | 3.3.18: Normanby, Kennedy and Stewart Rivers in the south-east of the bioregion. Often heavily infested with weeds, including Mesosphaerum suaveolens* and Crotalaria goreensis*. However, most of the biodiversity in the ground layer is still maintained. |
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.
2 Superseded: Revision of the regional ecosystem classification removed this regional ecosystem code from use. It is included in the regional ecosystem description database because the RE code may appear in older versions of RE mapping and the Vegetation Management regulation.
