Regional ecosystem details for 5.7.11
| Regional ecosystem | 5.7.11 |
|---|---|
| Vegetation Management Act class | Least concern |
| Wetlands | Not a Wetland |
| Biodiversity status | No concern at present |
| Extent in reserves | This regional ecosystem is now mapped as 5.9.5x1. |
| Short description | Fluctuating climax of Atriplex spp., Sclerolaena sp. +/- short grasses, open forbland on mantled pediments with dense silcrete cover |
| Structure code | Open Forbland |
| Description | [RE not in use]²: This regional ecosystem is now mapped as 5.9.5x1. Ephemeral forbs usually predominate with Atriplex spongiosa, Sclerolaena lanicuspis and Sclerolaena glabra being the most abundant. Atriplex fissivalvis, Rhodanthe floribunda, Maireana ciliata and Osteocarpum dipterocarpum are locally abundant, while Gnephosis arachnoidea and Salsola australis occur frequently. Tripogon loliiformis and Sporobolus actinocladus become codominant or dominant in areas where the stone pavement is less dense. Astrebla pectinata and ephemeral forbs become dominant where the stone pavement is absent and in gilgai depressions. Local deposits of windblown sand support ephemeral forbs such as Calotis plumulifera, Gnephosis eriocarpa, Rhodanthe moschata and Polycalymma stuartii. Trees and shrubs are usually absent. Floristic composition varies with seasonal conditions, density of stone pavement and gilgai micro relief. Occurs on flat to gently undulating plains and on benched areas where gilgai micro relief present that are formed on mantled pediments, fresh rock and deeply weathered rock associated with erosion of the Tertiary land surface exposing Cretaceous sediments. Soils deep to moderately deep, desert loams with very dense silcrete, or occasionally ironstone, surface pavement. Red and brown cracking clays occur in gilgai. Not a Wetland. (BVG1M: 31b). |
| Supplementary description | Wilson and Purdie (1990a), P2, minor F4 (60); Neldner (1991), 50 (104); Mills R4 (69) |
| Fire management guidelines | INTERVAL: Fire return interval not relevant. INTERVAL_MIN: 100. INTERVAL_MAX: 100. STRATEGY: Exclude fire. ISSUES: Unlikely to burn due to generally sparse nature. Rarely enough fuel load to burn in any case. |
| Comments | 5.7.11: Occasionally, scattered Acacia sibirica is present. Soils subject to sheet and some gully erosion with associated change in floristic composition (Wilson and Purdie 1990b; P2). |
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.
