Regional ecosystem details for 1.3.13
| Regional ecosystem | 1.3.13 |
|---|---|
| Vegetation Management Act class | Least concern |
| Wetlands | Not a Wetland |
| Biodiversity status | No concern at present |
| Subregion | 3, 1, (2), (4.2), (2.2), (2.8), (2.7), (4), (2.3), (4.3), (4.7), (4.1) |
| Estimated extent1 | Pre-clearing 151000 ha; Remnant 2021 150000 ha |
| Short description | Eucalyptus leucophylla woodland on levees and minor drainage lines |
| Structure code | Woodland |
| Description | Woodland of Eucalyptus leucophylla, commonly with Corymbia terminalis, Acacia cambagei, Atalaya hemiglauca and C. aparrerinja with a mixed ground layer of tussock grasses and Triodia spp. Occurs on recent levees of larger watercourses and in-channel deposits of ephemeral streams. Not a Wetland. (BVG1M: 19b). Vegetation communities in this regional ecosystem include: 1.3.13a: Woodland of Eucalyptus leucophylla, commonly with Corymbia terminalis, Acacia cambagei, Atalaya hemiglauca and C. aparrerinja. Occasional canopy species include Corymbia confertiflora, Lysiphyllum cunninghamii and Eucalyptus pruinosa. The ground layer is a mix of tussock grasses and Triodia spp. Occurs on recent levees of larger watercourses and in-channel deposits of ephemeral streams. Not a Wetland. (BVG1M: 19b). 1.3.13b: Eucalyptus leucophylla and Corymbia terminalis and/or C. aparrerinja open forest with a Flueggea virosa dominated shrub layer and Dichanthium fecundum dominated ground layer. Occurs on recent alluvium in valley infill in the north of the bioregion. Not a Wetland. (BVG1M: 19b). |
| Protected areas | Lawn Hill (Stockyard Creek) RR, Boodjamulla (Lawn Hill) NP, Lawn Hill (Widdallion) RR, Lawn Hill (Gregory) RR, Lawn Hill (Gregory River Base) RR, Lawn Hill (Gorge Mouth) RR |
| Special values | 1.3.13: Potential habitat for NCA listed species: Ipomoea antonschmidii, Ptilotus maconochiei. |
| Fire management guidelines | SEASON: Storm season to early dry season. INTENSITY: Low to moderate. INTERVAL: 4 - 10 years. Ensure some areas are long (10-20 years) unburnt. Adjust intervals/frequency according to rainfall-drought cycles, fuel accumulation and previous fire history. INTERVAL_MIN: 4. INTERVAL_MAX: 20. 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. Overgrazing can reduce fuel loads and give woody species a competitive advantage. |
| Comments | 1.3.13: This vegetation community was previously mapped as 1.3.6x1. Subject to high grazing pressure and Cloncurry buffel (Cenchrus pennisetiformis) invasion. 1.3.13a: This vegetation community was previously mapped as 1.3.6x1a. Subject to high grazing pressure and Cenchrus pennisetiformis (Cloncurry buffel) invasion. 1.3.13b: This vegetation community was previously mapped as 1.3.6x1c. Occurs on Lawn Hill map sheet. Subject to high grazing pressure and Cloncurry buffel (Cenchrus pennisetiformis) invasion. |
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.
