Regional ecosystem details for 1.11.2
| Regional ecosystem | 1.11.2 |
|---|---|
| Vegetation Management Act class | Least concern |
| Wetlands | Not a Wetland |
| Biodiversity status | No concern at present |
| Subregion | 3, 1, (2), (2.8), (2.7), (4), (2.2), (4.2), (4.3), (2.3), (4.7) |
| Estimated extent1 | Pre-clearing 1245000 ha; Remnant 2021 1239000 ha |
| Short description | Eucalyptus leucophloia low open woodland |
| Structure code | Low Open Woodland |
| Description | Eucalyptus leucophloia low open woodland or low woodland, sometimes with Eucalyptus leucophylla, Corymbia terminalis, Corymbia aparrerinja or Eucalyptus normantonensis usually with a Acacia spp. dominated shrub layer and Triodia spp. and/or tussock grass understorey. Treeless areas common. Occurs on hills and ranges on strongly folded metamorphic pre-Cambrian rocks; soils skeletal, some red earths. Not a Wetland. (BVG1M: 19a). Vegetation communities in this regional ecosystem include: 1.11.2a: Eucalyptus leucophloia low open woodland often with Corymbia terminalis, Corymbia capricornia, Terminalia aridicola and Eucalyptus leucophylla with shrub layer of Acacia spp. and ground layer of Triodia spp. Occurs on steep hills and strike ridges. Not a Wetland. (BVG1M: 19a). 1.11.2d: [RE not in use]²: This vegetation community is now mapped as 1.11.2a. Low open woodland of Eucalyptus leucophloia often with E. leucophylla, Corymbia spp., Terminalia aridicola and/or Brachychiton collinus on rock outcrops with a very sparse shrub layer of Acacia spp. and a sparse to very sparse ground layer of Triodia pungens. Occurs on steep rocky slopes and crests on metamorphosed igneous rocks. Not a Wetland. (BVG1M: 19a). 1.11.2e: [RE not in use]²: This vegetation community is now mapped as 1.11.3a. Low open woodland of Eucalyptus leucophylla and E. leucophloia often with Acacia cambagei and Corymbia terminalis with a sparse ground layer of Triodia pungens and/or Triodia longiceps. Occurs on footslopes and lower slopes, broken by creeks and drainages. Not a Wetland. (BVG1M: 19b). 1.11.2f: [RE not in use]²: This vegetation community is now mapped as 1.11.2a. Low open woodland of Eucalyptus leucophloia and/or Corymbia capricornia and/or Eucalyptus pruinosa subsp. pruinosa and/or Corymbia grandifolia subsp. grandifolia over a ground layer of tussock grasses and Triodia pungens. Low hills in far north of bioregion. Not a Wetland. (BVG1M: 19a). 1.11.2g: [RE not in use]²: This vegetation community is now mapped as 1.11.12. Triodia pungens hummock grassland with emergent trees including Eucalyptus leucophloia, Eucalyptus pruinosa subsp. pruinosa, Corymbia grandifolia subsp. grandifolia, Atalaya hemiglauca and Terminalia canescens. Occurs on hills and ranges on strongly folded metamorphic pre-Cambrian rocks; soils skeletal. Not a Wetland. (BVG1M: 19a). 1.11.2h: Mixed mallee form low open woodland of Eucalyptus melanophloia subsp. nana and/or Eucalyptus normantonensis and/or Eucalyptus gamophylla often with Eucalyptus leucophloia and Corymbia capricornia with mixed shrub layer and Triodia molesta dominated ground layer. Occurs on hills and ranges on strongly folded metamorphic pre-Cambrian rocks; soils skeletal. Not a Wetland. (BVG1M: 19a). 1.11.2i: Eucalyptus normantonensis low open woodland, often with Eucalyptus leucophloia over a Triodia longiceps hummock grass ground layer. Occurs on hills and ranges on strongly folded metamorphic pre-Cambrian rocks; soils skeletal, some red earths. Not a Wetland. (BVG1M: 19d). 1.11.2j: Eucalyptus herbertiana and/or Corymbia capricornia low open woodland with mixed shrub layer and ground layer of Triodia pungens and tussock grasses. Occurs on upper slopes and summits of hills and ranges on strongly folded metamorphic pre-Cambrian rocks, skeletal soils. Not a Wetland. (BVG1M: 19a). 1.11.2x1: [RE not in use]²: This vegetation community is now mapped as 1.7.7a. Low open woodland of Eucalyptus herbertiana and/or Corymbia capricornia, mixed shrub layer and ground layer of Triodia pungens and tussock grasses. Occurs on upper slopes and summits of hills and ranges on strongly folded metamorphic pre-Cambrian rocks, skeletal soils. Not a Wetland. (BVG1M: 19a). 1.11.2x1b: [RE not in use]²: This vegetation community is now mapped as 1.7.7b. Low open woodland of Eucalyptus herbertiana and/or Corymbia capricornia, mixed shrub layer and ground layer of Triodia pungens and tussock grasses. Occurs on hills on Surprise Creek Formation. Not a Wetland. (BVG1M: 19a). 1.11.2x2: [RE not in use]²: This regional ecosystem is now mapped as 1.11.7. Acacia cambagei low woodland. Occurs on hills and ranges of fine grained metamorphic sediments. Not a Wetland. (BVG1M: 26a). 1.11.2x2a: [RE not in use]²: This vegetation community is now mapped as 1.7.5b. Low woodland to open forest of Acacia shirleyi. Occurs on metamorphic hills. Not a Wetland. (BVG1M: 24a). 1.11.2x2b: [RE not in use]²: This vegetation community is now mapped as 1.11.7. Acacia cambagei low woodland with a sparse to very sparse ground layer of tussock grasses and Triodia spp. Occurs on colluvial footslopes. Not a Wetland. (BVG1M: 26a). 1.11.2x2c: [RE not in use]²: This vegetation community is now mapped as 1.11.7. Acacia cambagei low woodland. Occurs on hills and ranges of fine grained metamorphic sediments. Not a Wetland. (BVG1M: 26a). 1.11.2x3: [RE not in use]²: This regional ecosystem is now mapped as 1.11.8. Low open woodland of Corymbia aspera, often with Terminalia aridicola subsp. aridicola, Eucalyptus leucophloia and C. capricornia with a Triodia spp. understorey. Occurs on rock outcrops on hills and ranges on strongly folded siliceous sedimentary and metamorphic pre-Cambrian rocks; skeletal soils. Not a Wetland. (BVG1M: 19a). 1.11.2x4: [RE not in use]²: This regional ecosystem is now mapped as 1.11.8. Terminalia aridicola and/or Corymbia aspera low open woodland to low woodland, often with Brachychiton collinus, Ficus spp., Alphitonia spp. and Trema tomentosa with mid-dense shrub layer of Acacia spp. and/or Calytrix brownii and ground layer of mixed tussock grasses and Triodia spp. Calytrix brownii may be dominant on exposed rock faces. Occurs on rock outcrops on hills and ranges on strongly folded siliceous sedimentary and metamorphic pre-Cambrian rocks. Not a Wetland. (BVG1M: 29b). 1.11.2x5: [RE not in use]²: This regional ecosystem is now mapped as 1.11.9. Eucalyptus odontocarpa open shrubland including occasional Acacia monticola, Acacia retivenea and Grevillea wickhamii. Triodia pungens ground layer. Occurs on siliceous metamorphics on the far west of the Mount Isa Inlier. Not a Wetland. (BVG1M: 19a). 1.11.2x6: [RE not in use]²: This regional ecosystem is now mapped as 1.11.10. Mixed low open woodland including Corymbia terminalis, Atalaya hemiglauca, Eucalyptus leucophylla, Hakea lorea subsp. lorea, Hakea chordophylla, Acacia cambagei and Corymbia aparrerinja with a scattered shrub layer mostly of Senna spp. and Eremophila spp. and very open ground layer of mostly annual species sometimes with Triodia molesta and Triodia brizoides. Occurs on hard metamorphic plains. Not a Wetland. (BVG1M: 19a). 1.11.2x6a: [RE not in use]²: This vegetation community is now mapped as 1.11.10a. Mixed low open woodland including Corymbia terminalis, Atalaya hemiglauca, Hakea lorea subsp. lorea, Hakea chordophylla, Acacia cambagei and Corymbia aparrerinja with a scattered shrub layer mostly of Senna spp. and Eremophila spp. and very open ground layer of mostly annual species sometimes with Triodia molesta and Triodia brizoides. Occurs on hard metamorphic plains. Not a Wetland. (BVG1M: 19a). 1.11.2x6b: [RE not in use]²: This vegetation community is now mapped as 1.11.10b. Mixed low open woodland including Eucalyptus leucophylla, Corymbia terminalis, Corymbia aparrerinja, Atalaya hemiglauca, Grevillea striata, Hakea spp., Acacia excelsa subsp. angusta and Acacia cambagei over a sparse ground layer dominated by short annual grasses and forbs. Treeless areas are common. Occurs on undulating landscapes of metamorphosed igneous rocks. Not a Wetland. (BVG1M: 19a). 1.11.2x7: [RE not in use]²: This regional ecosystem is now mapped in part as 1.11.11 and in part as 1.11.12. Triodia spp. Hummock grassland. Occurs as a minor component of a number of regional ecosystems. Not a Wetland. (BVG1M: 33b). 1.11.2x7a: [RE not in use]²: This vegetation community is now mapped as 1.11.11. Triodia spp. hummock grassland with emergent Eucalyptus leucophloia and/or Eucalyptus leucophylla. Occurs as a minor component of a number of regional ecosystems in the central and southern parts of the bioregion. Not a Wetland. (BVG1M: 33b). 1.11.2x7b: [RE not in use]²: This vegetation community is now mapped as 1.11.12. Triodia pungens hummock grassland with emergent trees including Eucalyptus leucophloia, Eucalyptus pruinosa subsp. pruinosa, Corymbia grandifolia subsp. grandifolia, Atalaya hemiglauca and Terminalia canescens. Occurs as a minor component of a number of regional ecosystems in the north of the bioregion. Not a Wetland. (BVG1M: 33b). 1.11.2x8: [RE not in use]²: This vegetation community is now mapped as 1.7.5b. Low woodland to open forest of Acacia shirleyi. Occurs on metamorphic hills. Not a Wetland. (BVG1M: 24a). |
| Supplementary description | Christian et al. (1954), Yelvertoft, Mount Isa; Neldner (1991), part 16, part 39; Perry et al. (1964), Argylla, Kuridala, Quamby |
| Protected areas | Lawn Hill (Stockyard Creek) RR, Lawn Hill (Widdallion) RR, Lawn Hill (Lilydale) RR, Lawn Hill (Arthur Creek) RR, Boodjamulla (Lawn Hill) NP, Lawn Hill (Gregory) RR, Lawn Hill (Gorge Mouth) RR |
| Special values | 1.11.2: Potential habitat for NCA listed species: Eucalyptus nudicaulis, Ipomoea antonschmidii, Solanum carduiforme, Trachymene glandulosa. |
| Fire management guidelines | SEASON: Storm season to early dry season. INTENSITY: Low to moderate. INTERVAL: 4 - 10 years. Adjust intervals/frequency according to rainfall-drought cycles, fuel accumulation and previous fire history. INTERVAL_MIN: 4. INTERVAL_MAX: 10. STRATEGY: Ensure burns are undertaken across the landscape at a range of frequencies to create a mosaic of times since fire. Apply numerous small burns every year to achieve a mosaic and reduce risks of wildfire across vast areas of the landscape. Maintain burnt areas < 20%. ISSUES: Rainfall is a major factor affecting spinifex growth, such that a very wet year or a series of wet years may boost the spinifex fuel load leading to the possibility of extensive wildfire in subsequent years. Buffel grass can promote high intensity fire. Fuel loads tend to be higher where there is a mix of tussock and spinifex grasses. |
| Comments | 1.11.2a: This RE contains small areas of Eucalyptus normantonensis that are too small to map but occasionally occur in the region centred between Mary Kathleen and Mount Isa. Eucalyptus normantonensis dominated communities that are large enough to be mapped at 1:100,000 scale belong in 1.11.2i. 1.11.2j: Occurs on Lawn Hill 1:250000 map sheet. 1.11.2x4: Key driver of this community is protection from fire provided by exposed rock. The larger the fire refuge the richer the community that develops. 1.11.2x7a: Occurs in the central and southern parts of the bioregion. 1.11.2x7b: Occus in the north 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.
