Regional ecosystem details for 7.12.30
| Regional ecosystem | 7.12.30 |
|---|---|
| Vegetation Management Act class | Least concern |
| Wetlands | Not a Wetland |
| Biodiversity status | No concern at present |
| Subregion | 9, 4, 6, 5, (9.6), (7), (9.4), (9.3) |
| Estimated extent1 | Pre-clearing 43000 ha; Remnant 2021 43000 ha |
| Short description | Corymbia citriodora +/- Eucalyptus portuensis woodland to open forest on granite and rhyolite |
| Structure code | Woodland |
| Description | Corymbia citriodora (lemon-scented gum) +/- Eucalyptus portuensis (white mahogany) woodland to open forest. Granite and rhyolite (often coarse-grained red earths and lithosols with much surface rock). Not a Wetland. (BVG1M: 10b). Vegetation communities in this regional ecosystem include: 7.12.30a: Corymbia citriodora, Eucalyptus portuensis, C. intermedia, Syncarpia glomulifera woodland to low woodland to open forest with Callitris intratropica, Acacia calyculata and Xanthorrhoea johnsonii. Uplands and highlands, of the moist and dry rainfall zones. Not a Wetland. (BVG1M: 10b). 7.12.30b: Corymbia citriodora and Eucalyptus granitica, +/- E. reducta, +/- C. abergiana woodland to low open woodland often with Acacia calyculata and Jacksonia sp., and with Themeda triandra in the ground stratum. Rocky granite footslopes and mid-slopes. Not a Wetland. (BVG1M: 10b). 7.12.30c: Eucalyptus portuensis, Corymbia citriodora, Syncarpia glomulifera woodland and shrubland with a shrubby understorey of Lophostemon confertus and S. glomulifera, and a ground stratum of Xanthorrhoea johnsonii. Rocky slopes on rhyolite and granite. Not a Wetland. (BVG1M: 10b). 7.12.30d: Open woodland to open forest (10-20m tall) mosaic with variable dominance, often including Eucalyptus cloeziana, C. citriodora, E. portuensis, E. lockyeri, C. leichhardtii, E. atrata, E. pachycalyx, E. reducta, C. intermedia and E. shirleyi. There is often a very sparse to mid-dense secondary tree layer of C. abergiana and/or C. stockeri. A very sparse to sparse tall shrub layer may be present and can include Acacia flavescens, Persoonia falcata, Bursaria spinosa subsp. spinosa, Allocasuarina inophloia, Petalostigma pubescens and Grevillea glauca. A sparse to dense lower shrub layer may include Jacksonia thesioides, Acacia calyculata, Xanthorrhoea johnsonii and Grevillea glossadenia. The ground layer may be dominated by species such as Themeda triandra, Heteropogon triticeus, Mnesithea rottboellioides, Arundinella setosa, Cleistochloa subjuncea, Eriachne pallescens var. pallescens, Lepidosperma laterale and Xanthorrhoea johnsonii. Rocky slopes on granite and rhyolite. Not a Wetland. (BVG1M: 9d). |
| Supplementary description | Stanton and Stanton (2005), G129, G16i, R16i, R223, G223; Tracey and Webb (1975), 16i |
| Protected areas | Mount Windsor NP, Mount Lewis NP, Paluma Range NP, Ravenshoe FR 1, Baldy Mountain FR, Danbulla NP, Koombooloomba South FR, Millstream Falls NP, Daintree NP (CYPAL), Tumoulin NP, Girringun NP, Davies Creek NP, Dinden West FR |
| Special values | 7.12.30: Potential habitat for NCA listed species: Acacia longipedunculata, Acacia purpureopetala, Acacia tingoorensis, Corymbia rhodops, Diuris oporina, Dodonaea uncinata, Grevillea glossadenia, Homoranthus porteri, Melaleuca sylvana, Micromyrtus delicata, Coleus amoenus, Prostanthera clotteniana, Triplarina nitchaga, Zieria obovata. 7.12.30d: Habitat for several locally restricted and disjunct species. Threatened plant species include Micromyrtus delicata, Melaleuca sylvana, Diuris oporina, Homoranthus porteri, Grevillea glossadenia, Acacia purpureopetala, Corymbia rhodops and Prostanthera clotteniana. Other species of local significance are Eucalyptus lockyeri. |
| Fire management guidelines | SEASON: Cool, dry season (April-Sep). INTENSITY: Low to moderate. INTERVAL: 2-5 years. INTERVAL_MIN: 2. INTERVAL_MAX: 5. STRATEGY: Mosaic burn < 30%. Begin burning early in the fire season, with progressive patch fires burnt through the year. Stop burning when the network of fires and other breaks is sufficient to impede fire spread later in the year. Storm-burning may be used to add further diversity to the fire mosaic. ISSUES: An occasional moderate severity fire may be used to manage overabundant recruitment of trees. Maintaining a fire mosaic will ensure protection of animal habitats and mitigate against wildfires. |
| Comments | 7.12.30: Corymbia citriodora, which is always present, becomes the only tree species in some forests. Fairly low woodland, typically grassy but can be shrubby. Ranges from open woodland citriodora/ironbark on western edge to the woodland/open forest citriodora/acmenoides regional ecosystems further east. Distinguished from 7.12.34 by the dominance of C. citriodora. Central and southern areas are degraded by timber harvesting activities and grazing, which create disturbance and facilitate weed invasion. Poorly represented in protected areas. Mount Windsor Tableland, Mount Carbine Tableland, Lamb Range, Mount Fox and the Kirrama-Oak Hills region. 7.12.30d: 7.12.65d was amalgamated into this RE. Distinguished from other regional ecosystems in the 7.12.30 series by the presence (often dominance) of E. cloeziana. Drier and lower in stature (and more western) than the 7.12.25 series. Also related to the 7.12.57 series but does not contain Syncarpia glomulifera (7.12.57a) and the canopy is taller in stature (>10m tall) than 7.12.57c which is <10m tall. Occurs to the west of Herberton and on the Herberton Range to the NW of Mt. Emerald. The weed Praxelis clematidea is a problem from the Herberton Range south. |
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.
