Regional ecosystem details for 7.5.2
| Regional ecosystem | 7.5.2 |
|---|---|
| Vegetation Management Act class | Of concern |
| Wetlands | Not a Wetland |
| Biodiversity status | Of concern |
| Subregion | 5, 9.6, 9.4, (6) |
| Estimated extent1 | Pre-clearing 6000 ha; Remnant 2021 6000 ha |
| Short description | Eucalyptus portuensis +/- Corymbia intermedia open forest to woodland of uplands on weathered soils of a remnant surface |
| Structure code | Open Forest |
| Description | Eucalyptus portuensis (white mahogany) +/- Corymbia intermedia (pink bloodwood), open forest to woodland of uplands. Weathered soils of a remnant surface. Not a Wetland. (BVG1M: 9d). Vegetation communities in this regional ecosystem include: 7.5.2a: Eucalyptus portuensis, Corymbia intermedia, E. tereticornis, Lophostemon suaveolens, Syncarpia glomulifera open forest and woodland. Laterite. Not a Wetland. (BVG1M: 9d). 7.5.2b: Eucalyptus portuensis, Corymbia intermedia, E. tereticornis, Lophostemon suaveolens, Syncarpia glomulifera open forest and woodland. Deep weathered soils of basalt origin. Not a Wetland. (BVG1M: 9d). 7.5.2c: Eucalyptus portuensis +/- Corymbia intermedia +/- Corymbia clarksoniana +/- Eucalyptus tereticornis +/- Lophostemon suaveolens tall open forest to woodland with a mid layer of Acacia flavescens, Allocasuarina torulosa, and a grassy ground layer. Weathered soils of a remnant surface. Not a Wetland. (BVG1M: 9d). 7.5.2d: Eucalyptus portuensis, Corymbia intermedia, E. drepanophylla woodland to low woodland with Acacia flavescens and Allocasuarina littoralis. Includes small areas of Themeda triandra grassland. Laterite and weathered soils of a remnant surface. Not a Wetland. (BVG1M: 9d). 7.5.2e: Corymbia intermedia, Eucalyptus platyphylla, Lophostemon suaveolens, E. drepanophylla woodland to low woodland with Melaleuca viridiflora. Laterite. Not a Wetland. (BVG1M: 21a). 7.5.2f: Eucalyptus drepanophylla, Corymbia clarksoniana low woodland with Acacia spp. Laterite. Not a Wetland. (BVG1M: 13c). 7.5.2g: Lophostemon confertus low closed forest to closed forest. Laterite. Not a Wetland. (BVG1M: 28e). 7.5.2h: Grassy open woodland and shrublands. Species present are mostly those of surrounding woodland habitats plus a range of shrub species, commonly Lophostemon grandiflorus, L. confertus, L. suaveolens, Timonius timon var. timon, Ficus rubiginosa and Acacia leptostachya. Areas of shallow soil, with some rock pavement, on hillslopes. Laterite. Not a Wetland. (BVG1M: 28e). |
| Supplementary description | Stanton and Stanton (2005), L15b, X15b, L197, L110, L41, L16m, W16m, L59, Le41-5w, L49; Tracey and Webb (1975), 15b, 16m |
| Protected areas | Girringun NP |
| Fire management guidelines | SEASON: Cool, dry season (June-Sep). d,e,f,g: April-Sep. h: Avoid dry conditions or fires will spread too much. April to July or as early as March, conditions permitting. INTENSITY: Low to moderate. h: Moisture and topography affect severity. Low to high. INTERVAL: 2-5 years. h: 6-10 years with some areas burnt at longer intervals. Fire intervals less than 6 years are too short to allow replenishment of obligate seeders. INTERVAL_MIN: 2. INTERVAL_MAX: 10. 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. h: Mosaic burns will be achieved through use of natural features such as topography and creek-lines. Burn in association with surrounding vegetation. Protection relies on the broad-scale management of surrounding country with numerous small fires throughout the year so that wildfires will be very limited in extent. Fire exclusion and buffering from fire are not necessary. ISSUES: Ignition is most likely during hot, dry season (Oct - Jan). These fires are typically high intensity fires that can be difficult to control. Maintaining a fire mosaic will ensure protection of animal habitats and mitigate against wildfires. d,e,f,g: An occasional moderate severity fire may be used to manage overabundant recruitment of trees. h: Any planned burning should be conducted in association with plans for surrounding vegetation. Often contains obligate seed regenerating species and as such, the application of frequent fire may reduce species richness if the intervals between fire are not sufficient for plants to produce seed (e.g., loss of Banksia plagiocarpa). Too frequent a fire frequency may result in a net loss of nutrients over time from an already nutrient poor system. Burn when water and moisture are present on the ground. |
| Comments | 7.5.2: Central-western parts 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.
