Regional ecosystem details for 2.3.12
| Regional ecosystem | 2.3.12 |
|---|---|
| Vegetation Management Act class | Least concern |
| Wetlands | Palustrine |
| Biodiversity status | Of concern |
| Subregion | 2, 8, (3) |
| Estimated extent1 | Pre-clearing 14000 ha; Remnant 2021 14000 ha |
| Short description | Eucalyptus microtheca and/or Excoecaria parvifolia open woodland on seasonally flooded plains/depressions with numerous distributary channels |
| Structure code | Open Woodland |
| Description | Eucalyptus microtheca and/or Excoecaria parvifolia open woodland, occasionally with Atalaya hemiglauca. The ground layer commonly includes Oryza spp., Eleocharis spp. and Flemingia pauciflora. Occurs in large, seasonally flooded plains/depressions with numerous distributary channels. Cracking clay soils. Palustrine. (BVG1M: 34d). Vegetation communities in this regional ecosystem include: 2.3.12a: [RE not in use]²: This vegetation community has been amalgamated into 2.3.12. Eucalyptus microtheca and/or Excoecaria parvifolia open woodland, occasionally with Atalaya hemiglauca. The ground layer commonly includes Oryza spp., Eleocharis spp. and Flemingia pauciflora. Occurs in large, seasonally flooded plains/depressions with numerous distributary channels. Cracking clay soils. Palustrine. (BVG1M: 34d). 2.3.12x1: [RE not in use]²: This regional ecosystem is now mapped as 2.3.43. Mixed tussock grassland including combinations of the species Sporobolus mitchellii, Elytrophorus spicatus, Oryza sp., Juncus sp. and Ipomoea diamantinensis. Small areas of Chenopodium auricomum dwarf shrubland may occur. Occurs on seasonally inundated Quaternary alluvial plains. Cracking clay soils. Not a Wetland. (BVG1M: 32a). |
| Supplementary description | Perry et al. (1964), Balbarini |
| Special values | 2.3.12: Seasonal wetlands of regional significance as water bird feeding and breeding sites. 2.3.12a: Seasonal wetlands of regional significance as water bird feeding and breeding sites. |
| Fire management guidelines | SEASON: Early to mid-dry season. INTENSITY: Low to moderate. INTERVAL: 3-5 years. INTERVAL_MIN: 3. INTERVAL_MAX: 5. STRATEGY: Burn less than 30% in any year. Buffer as indicated by fuel build-up in surrounding vegetation. Use mosaic burning of swamp to maintain structure. Some standing water must be present. ISSUES: Sedges are disadvantaged by repeated high intensity fires. Low intensity fires help to maintain open structure. Mosaic helps protect animal habitat and food. Can be burnt when water level is deep enough to protect bases of sedges. |
| Comments | 2.3.12: Was previously partly mapped as 2.3.12a. Threatening processes are the dry season impacts of high total grazing pressure leading to habitat loss. Risk of invasion by introduced ponded pasture species. 2.3.12a: Subject to degradation from high total grazing pressure, particularly in the dry season. 2.3.12x1: Threatening processes associated with potential expansion of intensive agriculture in the area. |
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.
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.
