Regional ecosystem details for 6.3.1
| Regional ecosystem | 6.3.1 |
|---|---|
| Vegetation Management Act class | Least concern |
| Wetlands | Riverine |
| Biodiversity status | Of concern |
| Subregion | 4, 2, 6, (8), (5), (1), (4.4), (11.26), (3) |
| Estimated extent1 | Pre-clearing 30000 ha; Remnant 2021 19000 ha |
| Short description | Eucalyptus camaldulensis woodland on alluvium within Acacia aneura associations |
| Structure code | Woodland |
| Description | Eucalyptus camaldulensis woodland fringing main channels and on adjacent terraces of medium to small drainage lines with narrow alluvial plains. E. populnea is often present and may be locally dominant. Occasional clumps of Melaleuca trichostachya occur along channels. Scattered E. coolabah with Acacia aneura and Eremophila mitchellii tall shrubs may occur on minor flats near the channels. The ground layer is usually sparse and dominated by species such as Arundinella nepalensis, Bothriochloa ewartiana, Chrysopogon fallax and Leptochloa digitata. Occurs along major drainage lines and narrow alluvial plains in Acacia aneura dominated associations, on deep red and brown alluvial clays, and on the smaller streams, on red and brown texture contrast soils. Riverine. (BVG1M: 16a). Vegetation communities in this regional ecosystem include: 6.3.1a: [RE not in use]²: This vegetation community is now mapped as 6.3.3x1. Vegetation ranges from open water +/- aquatics and emergents such as Nymphaea violacea and Nymphoides indica. Often with fringing woodland, commonly Eucalyptus camaldulensis or E. coolabah. Occurs on billabongs on floodplains. Palustrine. (BVG1M: 34d). |
| Supplementary description | Neldner (1984), 12b (24); Mills and Lee (1990), W1 (LU 1) |
| Protected areas | Mariala NP |
| Special values | 6.3.1: High fauna diversity, particularly mammal and bird species. |
| Fire management guidelines | SEASON: n/a. a: Wet season. INTENSITY: n/a. a: Low. INTERVAL: Fire return interval not relevant. INTERVAL_MIN: 100. INTERVAL_MAX: 100. STRATEGY: Manage surrounding country. a: Aim to exclude fire by fuel reduction in adjacent vegetation communities where possible. Undertake partial burns when necessary to reduce fuel loads and protect against severe wildfire. Burn with high soil moisture (i.e., after rain/storms) or in winter when fire is more easily controlled. ISSUES: This community does not need fire. Flood events drive recruitment. Hollow trees are critical habitat. High intensity and extensive fires will degrade vegetation structure and destroy animal habitats. Restrict extent and intensity of fires. a: Rarely enough fuel load to burn. |
| Comments | 6.3.1: Generally occurs on medium to small drainage lines with sandy soils in the eastern parts of the region compared to 6.3.2 which occurs on clay soils in the more western parts and 6.3.3 which occurs on larger river systems. Highly modified structural and floristic composition as a result of high total grazing pressure. Sheet and gully erosion is widespread in the central parts of the region associated with high grazing pressure (Mills and Lee, 1990, 205). |
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.
