Regional ecosystem details for 10.3.27
| Regional ecosystem | 10.3.27 |
|---|---|
| Vegetation Management Act class | Least concern |
| Wetlands | Not a Wetland |
| Biodiversity status | Of concern |
| Subregion | 4, (2), (11.26), (1), (11.15), (11.24), (11.7), (11.8), (4.4), (4.5) |
| Estimated extent1 | Pre-clearing 159000 ha; Remnant 2021 64000 ha |
| Short description | Eucalyptus populnea woodland to open woodland on alluvial plains |
| Structure code | Woodland |
| Description | Eucalyptus populnea dominates the very sparse tree layer occasionally with understorey of Archidendropsis basaltica. Occurs on alluvial plains with sandy duplex soils and sometimes clayey soils. Not a Wetland. (BVG1M: 17a). Vegetation communities in this regional ecosystem include: 10.3.27a: Eucalyptus populnea woodland, occasionally with Acacia harpophylla and Lysiphyllum carronii. Mixed tussock grass ground layer. Occurs on alluvial plains. Contains Palustrine. (BVG1M: 17a). 10.3.27b: [RE not in use]²: This vegetation community is now mapped as 10.3.27a. Archidendropsis basaltica dominates the very sparse canopy. Eucalyptus populnea may be present as an emergent or in the canopy. Eremophila mitchellii is occasionally present in the tall shrub layer. Carissa ovata usually dominates the shrub layer when present. The ground layer varies from very sparse to sparse. Occurs on alluvial plains (southern). Not a Wetland. (BVG1M: 27a). 10.3.27c: Eucalyptus populnea open woodland. Occurs on closed depressions on or adjacent to floodplains. Palustrine. (BVG1M: 17a). |
| Supplementary description | Thompson and Turpin (in prep), E17B |
| Protected areas | Cudmore RR, Cudmore (Limited Depth) NP |
| Special values | 10.3.27a: Only known record for the new species Eragrostis jerichoensis is from this regional ecosystem. |
| Fire management guidelines | SEASON: Wet to mid-dry season while soil retains moisture. INTENSITY: Low to occasional moderate. INTERVAL: Interval will depend on need for burning, seasonal conditions and grazing pressure. Approximately 5-10 years. Do not burn during drought years. Concentrate burning during wet years. INTERVAL_MIN: 5. INTERVAL_MAX: 10. STRATEGY: Most of the vegetation communities will be difficult to burn. Patchy burns are preferred. Mosaic 50-80% of area targeted. Burn under conditions of good soil moisture and when plants are actively growing. Burns during dry periods may leave areas of soil exposed, leading to erosion. ISSUES: Grazing can impact heavily and combined with low rainfall fuel loads will be low making burning difficult. Can be advantageous to burn in year following good rains to manage currant bush and false sandalwood. |
| Comments | 10.3.27: Eucalyptus brownii intergrades with E. populnea in some areas including near Barcaldine. Further investigation is required to determine the extent of the vegetation communities on clays and texture contrast soils and to provide comprehensive species lists for these communities. Threatening processes include increase in salinity due to clearing of recharge areas, clearing for pasture development, and woody weed invasion due to high total grazing pressures and absence of fire. This ecosystem is subject to sheet erosion and scalding. The clayey subsoils have a very low permeability are often sodic. It is suggested that ground cover be kept dense to slow the rate of water flow which helps prevent channelling of the flow and thereby minimises erosion. Overgrazing reduces competition from pasture species and tends to increase the cover of false sandalwood and current bush. 10.3.27b: This ecosystem is only known from a few locations south of Barcaldine. It mostly occurs as small patches in a mosaic with 10.3.27a. Many of these patches are unmappable at 1:100 000 scale mapping. |
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.
