Regional ecosystem details for 7.3.20
| Regional ecosystem | 7.3.20 |
|---|---|
| Vegetation Management Act class | Of concern |
| Wetlands | Not a Wetland |
| Biodiversity status | Of concern |
| Subregion | 2, 1, 9, (6), (3), (8), (7), (5), (3.2) |
| Estimated extent1 | Pre-clearing 11000 ha; Remnant 2021 6000 ha |
| Short description | Corymbia intermedia and Syncarpia glomulifera, or C. intermedia and Eucalyptus pellita, or S. glomulifera and Allocasuarina spp., or E. cloeziana, or C. torelliana open forest (or vine forest with these emergents) on alluvial fans at the base of ranges |
| Structure code | Open Forest |
| Description | Corymbia intermedia (pink bloodwood) and Syncarpia glomulifera (turpentine), or C. intermedia and Eucalyptus pellita (red stringybark), or Syncarpia glomulifera and Allocasuarina spp. (sheoaks), or E. cloeziana (Gympie messmate), or C. torelliana (cadaghi) open forest (or vine forests with these species as emergents). Moderate to steep alluvial fans at the base of ranges. Not a Wetland. (BVG1M: 9d). Vegetation communities in this regional ecosystem include: 7.3.20a: Eucalyptus pellita, Corymbia intermedia, C. tessellaris, open forest often with Acacia celsa, A. cincinnata, A. mangium and A. flavescens. Includes small areas dominated by A. crassicarpa. Alluvial fans of the very wet and wet rainfall zones, of the lowlands and foothills. Not a Wetland. (BVG1M: 9d). 7.3.20b: Eucalyptus pellita, Corymbia intermedia, C. tessellaris, open forest often with Acacia celsa, A. cincinnata, A. mangium and A. flavescens, with a very well-developed vine forest understorey. Alluvial fans of the very wet and wet rainfall zones, of the lowlands and foothills. Not a Wetland. (BVG1M: 9d). 7.3.20c: Syncarpia glomulifera, Corymbia intermedia, Eucalyptus pellita, E. tereticornis, open forest often with Acacia celsa and A. mangium. Alluvial fans of the very wet and wet rainfall zones, of the lowlands and foothills. Not a Wetland. (BVG1M: 9d). 7.3.20d: Corymbia intermedia, Syncarpia glomulifera, Lophostemon confertus open forest with Allocasuarina torulosa and Banksia aquilonia. Alluvial fans of the wet to moist rainfall zone, of foothills and lowlands. Not a Wetland. (BVG1M: 9d). 7.3.20e: Corymbia intermedia, Eucalyptus pellita, E. tereticornis, C. tessellaris, C. torelliana, open forest, often with Acacia celsa, A. mangium, Lophostemon suaveolens, and Syncarpia glomulifera. Alluvial fans of the wet and moist rainfall zones, of the lowlands and foothills. Not a Wetland. (BVG1M: 9e). 7.3.20f: Corymbia intermedia, Eucalyptus pellita, E. tereticornis, C. tessellaris, C. torelliana, open forest with a very well-developed vine forest understorey, and often with Acacia celsa, A. mangium, Lophostemon suaveolens, and Syncarpia glomulifera. Alluvial fans of the wet and moist rainfall zones, of the lowlands and foothills. Not a Wetland. (BVG1M: 9e). 7.3.20g: Simple notophyll vine forest with Corymbia torelliana, Eucalyptus tereticornis, C. intermedia, E. pellita, Acacia celsa, A. cincinnata and A. polystachya emergents and co-dominants. Alluvial fans of the moist rainfall zone, of the foothills and lowlands. Not a Wetland. (BVG1M: 9d). 7.3.20h: Acacia mangium and Lophostemon suaveolens open forest with scattered emergent sclerophyll species including Eucalyptus pellita, Corymbia tessellaris and C. intermedia. Alluvial fans of the moist rainfall zone, of the foothills and lowlands. Not a Wetland. (BVG1M: 9e). 7.3.20i: Syncarpia glomulifera, Allocasuarina torulosa and/or A. littoralis open forest and woodland. Alluvial fans of the wet rainfall zone, of the foothills and lowlands. Not a Wetland. (BVG1M: 28e). 7.3.20j: Syncarpia glomulifera, Allocasuarina torulosa and/or A. littoralis open forest and woodland with a very well-developed vine forest understorey. Alluvial fans of the wet rainfall zone, of the foothills and lowlands. Not a Wetland. (BVG1M: 28e). 7.3.20k: Eucalyptus cloeziana open forest. Alluvial fans of foothills and lowlands. Not a Wetland. (BVG1M: 9d). 7.3.20l: Syncarpia glomulifera, Corymbia intermedia, Allocasuarina littoralis woodland, low woodland and open forest with Banksia aquilonia, Acacia flavescens and Xanthorrhoea johnsonii. Alluvial fans of the moist rainfall zone, of the foothills and lowlands. Not a Wetland. (BVG1M: 9d). 7.3.20m: Acacia flavescens, Allocasuarina littoralis and A. torulosa low shrubby open forest to woodland. Alluvial fans of the moist rainfall zone of the foothills and lowlands. Not a Wetland. (BVG1M: 28e). |
| Supplementary description | Stanton and Stanton (2005), A139, A13a, A13av, A13b, A13e, A13f, A16b, A16bv, A16f, A67, A67v, A142, A171; Kemp and Morgan (1999), 36, 37, 40; Kemp et al. (1999), 36, 37, 38; Tracey and Webb (1975), 13a, 13b, 13f, 16b, 16f |
| Protected areas | Girringun NP, Hinchinbrook Island NP, Daintree NP (CYPAL), Ngalba-bulal NP (CYPAL), Tully Gorge NP, Hull River NP, Kuranda NP, Djiru NP, Mount Mackay NP, Girramay NP, Grey Peaks NP, Dinden NP, Dinden West FR, Kuranda West FR, Smithfield CP, Daintree NP, T |
| Special values | 7.3.20: Potential habitat for NCA listed species: Calochilus psednus, Drosera adelae, Scleromitrion polycladum. |
| Fire management guidelines | SEASON: Begin burning after the wet season (April-May), but avoid hot, dry season unless a high intensity fire is required to manage thickening, then undertake storm burn. g: Do not burn deliberately. k: Cool, dry season (June-Sep). INTENSITY: Low, with occasional moderate or high intensity to manage thickening and/or stimulate germination. g: Do not burn deliberately. k: Low to moderate. INTERVAL: 2-5 years. g: Do not burn deliberately. k: 2-5 years. INTERVAL_MIN: 2. INTERVAL_MAX: 100. STRATEGY: Mosaic burn 25-60%. 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 fire mosaic, promote perennial grasses and arrest woody thickening. g: Do not burn deliberately. Mosaic burning in surrounding fire-adapted ecosystems will minimise spread and severity of wildfire during severe weather events. k: 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: In the absence of fire an abundance of rainforest pioneers (e.g., Melastoma spp., Chionanthus ramiflora, Mallotus philippensis, Alyxia spicata and Glochidion spp.) and bracken fern can establish. This development can be rapid (within about 15 years) after which system change is difficult to reverse. Thickening with rainforest species can be detrimental to habitat trees and endangered species (e.g., mahogany glider). Where fire is more common the understorey is usually dominated by tall grasses (e.g., Themeda triandra and Eriachne pallescens), herbaceous plants, lilies and sedges (e.g., Tricoryne anceps, Gonocarpus acanthocarpus, Lomandra longifolia, Dianella caerulea). g: Occasional hot fires in adjoining communities may be required to prevent expansion of rainforest elements. Edges are generally self-protecting but back burning from rainforest edges may be desirable. The occurrence of high biomass grasses in or adjacent to rainforest may detrimentally affect rainforest during fire events associated with dry weather. k: 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. |
| Comments | 7.3.20: Widespread across the bioregion. 7.3.20b: Well-developed vine forest understorey is probably a condition state caused by infrequent burning. |
1 Estimated extent is from version 13 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.
