Regional ecosystem details for 11.3.5
| Regional ecosystem | 11.3.5 |
|---|---|
| Vegetation Management Act class | Least concern |
| Wetlands | Not a Wetland |
| Biodiversity status | Of concern |
| Subregion | 7, 37, 8, (3), (4), (13), (10), (26), (10.2), (4.4), (9), (10.4), (5), (6.1), (6.3) |
| Estimated extent1 | Pre-clearing 157000 ha; Remnant 2021 47000 ha |
| Short description | Acacia cambagei low woodland on alluvial plains |
| Structure code | Low Woodland |
| Description | Acacia cambagei +/- A. harpophylla low woodland to open forest (sometimes clumped). Eucalyptus coolabah, E. largiflorens or Acacia harpophylla may occur. A secondary tree or shrub layer, dominated by Eremophila mitchellii, commonly occurs. A lower shrub layer may occur, dominated by Senna artemisioides or Acacia cambagei. The ground layer is often poorly formed except under the canopy where there is usually a very sparse cover of dominants which include Paspalidium caespitosum, Sporobolus actinocladus and Brachyachne convergens. Other graminoids frequently present are Bothriochloa ewartiana, Iseilema vaginiflorum, Eragrostis microcarpa and Aristida latifolia. Occurs on levees on alluvial plains which are rarely flooded. Associated soils are often texture contrast with sandy surfaces. Not a Wetland. (BVG1M: 26a). |
| Supplementary description | Gunn et al. (1967), Funnel, Banchory; Galloway et al. (1974), LU73; Gunn and Nix (1977), LU 130, LU 123 |
| Protected areas | Culgoa Floodplain NP, Nairana NP, Epping Forest NP (S), Mazeppa NP, Narrien Range NP |
| Fire management guidelines | INTERVAL: Fire return interval not relevant. INTERVAL_MIN: 100. INTERVAL_MAX: 100. STRATEGY: Protection relies on broad-scale management of surrounding country with numerous small fires throughout the year so that wildfires will be very limited in extent. Protection from fire is necessary. ISSUES: Gidgee is readily killed by fire. Buffel grass invasion may increase risk from fire. High intensity fires will typically kill the overstorey. Grazing may be an option for reducing fuel loads where exotic grass such as buffel have invaded. |
| Comments | 11.3.5: Occurs mainly along north-west margins of bioregion, with some areas on the Culgoa River floodplains (subregion 37). Extensively cleared for pasture. |
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.
