Regional ecosystem details for 9.7.3
| Regional ecosystem | 9.7.3 |
|---|---|
| Vegetation Management Act class | Least concern |
| Wetlands | Not a Wetland |
| Biodiversity status | No concern at present |
| Subregion | 6, 4, (2), (5), (7.6), (7.5) |
| Estimated extent1 | Pre-clearing 42000 ha; Remnant 2021 42000 ha |
| Short description | Eucalyptus crebra or E. portuensis +/- Corymbia clarksoniana woodland on lateritised surfaces and edges of Tertiary surfaces |
| Structure code | Woodland |
| Description | Woodland of Eucalyptus crebra (narrow-leaved ironbark) (sens. lat.) or E. portuensis (white mahogany) +/- C. clarksoniana (Clarkson's bloodwood) and/or C. intermedia (pink bloodwood). The mid-layer is sparse to dense. The proportions of subdominants may change throughout the community. Occurs on lateritised weathering profiles. Not a Wetland. (BVG1M: 12b). Vegetation communities in this regional ecosystem include: 9.7.3a: Open woodland to woodland of Eucalyptus crebra (narrow-leaved ironbark) +/- Corymbia clarksoniana (Clarkson's bloodwood) +/- E. exserta (Queensland peppermint) +/- C. citriodora subsp. citriodora (lemon-scented gum) +/- E. howittiana (Howit's box). An absent to mid-dense sub-canopy or shrub layer can include Petalostigma pubescens (quinine), Allocasuarina inophloia (stringybark sheoak), Melaleuca nervosa, Grevillea glauca (bushman's clothes peg) and Bursaria incana (prickly pine). The sparse to grassy ground layer often includes Themeda triandra (kangaroo grass) and Heteropogon contortus (black speargrass). Woodlands dominated by E. howittiana with an open understory and a sedge groundcover exist on the edges of some Tertiary plateaus. Occurs on lateritised weathering profiles overlying land zone 11 or 12 geologies and on lateritised edges of granite breakaways and Tertiary plateaus in subregion 6. Not a Wetland. (BVG1M: 12b). 9.7.3b: Woodland of Eucalyptus portuensis (white mahogany) +/- Corymbia trachyphloia (brown bloodwood) +/- C. citriodora subsp. citriodora (lemon-scented gum) +/- C. clarksoniana (Clarkson's bloodwood) +/- C. intermedia (pink bloodwood) +/- E. crebra (narrow-leaved ironbark) +/- E. howittiana (Howit's box). A sparse sub-canopy can contain canopy species +/- Grevillea glauca (bushman's clothes peg). A sparse to mid-dense shrub layer is often present and includes canopy species, Acacia spp. (wattle), Grevillea spp. +/- Pultenaea spp. There is a mid-dense grassy cover of Themeda triandra (kangaroo grass). Occurs on lateritised weathering profiles overlying land zone 11 or 12 geologies and on lateritised edges of granite breakaways and Tertiary plateaus in subregion 6. Not a Wetland. (BVG1M: 12b). 9.7.3c: Woodland to open woodland of Eucalyptus crebra (narrow-leaved ironbark) sens. lat.) +/- Corymbia erythrophloia (red bloodwood) +/- C. dallachiana (Dallachy's gum) +/-C. confertiflora (broad-leaved Moreton Bay ash. The shrub layer varies from absent to open and can include Petalostigma pubescens (quinine), Grevillea glauca (bushman's clothes peg), G. parallela (silver oak) and Bursaria incana (prickly pine) and a grassy ground layer is dominated by Bothriochloa sp. Occurs on low rolling hills. Not a Wetland. (BVG1M: 12b). |
| Protected areas | Girringun NP, Girringun CP |
| Fire management guidelines | SEASON: Early dry season and storm time. Timing of early dry season burns will vary depending on seasonal conditions; it may sometimes commence as early as March. INTENSITY: Low, with occasional moderate. INTERVAL: 2-5 year intervals with longer unburnt patches. Fuel loads tend to reach a maximum after 2-3 years. Ensure burn programs occur after big wet season as fuel loads will be higher than average. INTERVAL_MIN: 2. INTERVAL_MAX: 5. STRATEGY: Burn less than 40% across the landscape in any year. Burning through the early dry season will produce a network of burns that will contain later fires. Fires will only gain in intensity as the dry season progresses. Grass composition can be affected by timing and intensity of fire. Occasional moderate fire will help to reduce overabundant trees that could potentially suppress ground layer vegetation. ISSUES: Leave areas of long unburnt vegetation to maintain a diversity of habitat for wildlife. |
| Comments | 9.7.3: The regional ecosystem 9.7.4 may be closely associated with this regional ecosystem. Occurs adjacent to the Wet Tropics bioregional boundary in the central east of the bioregion. 9.7.3a: Occurs adjacent to the Wet Tropics bioregional boundary in the central east of the bioregion. 9.7.3b: Occurs in a scattered distribution from Princess Hill to Mt. Zero in the central east bioregion. 9.7.3c: Occurs north of Greenvale in the centre of 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.
