Regional ecosystem details for 3.3.33
| Regional ecosystem | 3.3.33 |
|---|---|
| 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 3.5.39x1. |
| Short description | Thryptomene oligandra and Melaleuca viridiflora woodland on sides of depressions |
| Structure code | Woodland |
| Description | [RE not in use]²: This regional ecosystem is now mapped as 3.5.39x1. Thryptomene oligandra (thryptomene) dominates the sparse to mid-dense canopy (5-14m tall) often in association with Melaleuca viridiflora (broad-leaved teatree), Neofabricia mjoebergii (yellow teatree) and Grevillea pteridifolia (golden grevillea). Corymbia clarksoniana (Clarkson's bloodwood) and Eucalyptus tetrodonta (Darwin stringybark) are sometimes present as part of an emergent layer (8-15m tall). Acacia torulosa (northern lancewood) and Syzygium eucalyptoides subsp. eucalyptoides may occur as emergent trees but more frequently form part of the canopy. Asteromyrtus symphyocarpa (liniment tree), Jacksonia thesioides (broombush) and smaller individuals of canopy species make up a sparse to mid-dense sub-canopy layer (3-8m tall). A sparse shrub layer (0.5-4m tall) is present where Styphelia ruscifolia, Neofabricia mjoebergii, Thryptomene oligandra, Alyxia spicata (chain fruit) and Pandanus spp. (screw palm) occur at the highest densities. The diverse ground layer is sparse. Schizachyrium spp. (fire grass), Thaumastochloa spp., Eriocaulon spp. and Ectrosia spp. (hare's foot grass) often dominate this layer. Occurs on sides of longitudinal drainage depressions. Not a Wetland. (BVG1M: 28c). |
| Supplementary description | Neldner and Clarkson (in prep), 110 |
| Special values | 3.3.33: High diversity of plant species due to seepage from higher in landscape. |
| Fire management guidelines | SEASON: Early to mid-dry season, with occasional storm burn or late dry season burn of limited area. INTENSITY: High, but low to moderate are more likely during the early to mid-dry season. INTERVAL: 1-5 years. INTERVAL_MIN: 1. INTERVAL_MAX: 5. STRATEGY: A mosaic of early dry season fires will prevent extensive wildfires in the late dry season and preserve areas for later storm-burning. Storm time and late dry season burns are used to maintain suitable vegetation structure. Burn less than 30% in any year. ISSUES: Lack of fire or low intensity burns can lead to overabundant broad-leaved ti-tree. High intensity fires may be difficult to achieve because of low fuel availability and accumulation rates and typically moister conditions. High intensity fires around storm time will promote a better developed ground layer. Active burning early in the dry season creates a mosaic to minimise the spread of wildfire late in the dry season. Early burns will usually burn with low intensity and will not control broad-leaved ti-tree. |
| Comments | 3.3.33: Widespread across the south of the bioregion. |
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.
