Regional ecosystem details for 4.3.2
| Regional ecosystem | 4.3.2 |
|---|---|
| Vegetation Management Act class | Least concern |
| Wetlands | Riverine |
| Biodiversity status | No concern at present |
| Subregion | 4, 2, 6, 3, 1, 7, (5), (1.1), (9.5), (1.3), (2.5), (5.4), (1.2), (10.4), (11.26), (2.3) |
| Estimated extent1 | Pre-clearing 102000 ha; Remnant 2021 101000 ha |
| Short description | Eucalyptus camaldulensis and/or E. coolabah woodland on fringing larger drainage lines |
| Structure code | Woodland |
| Description | Eucalyptus camaldulensis and/or E. coolabah fringing woodland to low woodland. Acacia cyperophylla var. cyperophylla (in the west) and other shrubs may occur. The ground layer is dominated by perennial tussock grasses, including Bothriochloa ewartiana, Eulalia aurea, Arundinella nepalensis, Leptochloa digitata and Themeda avenacea. Other ground layer species include Aristida latifolia, Chrysopogon fallax, Enteropogon acicularis, Sporobolus mitchellii and Cyperus victoriensis. Occurs on fringes of channels and inter-channel flats of larger drainage lines. Soils are variable and include deep, loose coarse sands, silty clays, sandy clay loams and gravelly loams. Riverine. (BVG1M: 16a). Vegetation communities in this regional ecosystem include: 4.3.2a: Mixed low woodland, with combinations of the species Eucalyptus coolabah, E. camaldulensis, Acacia cambagei, Lysiphyllum gilvum, E. leucophylla and A. aneura. Corymbia terminalis and C. aparrerinja may occur in the canopy. Occurs on fringes of minor watercourses in erosional landscapes with a mixture of coarse and fine grained parent materials. Southwestern Downs subregion. Riverine. (BVG1M: 16a). 4.3.2b: Eucalyptus microtheca, Eucalyptus camaldulensis low woodland, occasionally with Acacia cambagei and Corymbia terminalis. A variable shrub layer may occur. The ground layer is predominantly tussock grasses. Occurs on fringes of minor watercourses extending from the west edge of the Northwest Highlands bioregion with a mixture of coarse and fine grained parent materials. Riverine. (BVG1M: 16a). 4.3.2c: Eucalyptus camaldulensis and/or E. coolabah woodland. Lower trees include Melaleuca spp. and Lysiphyllum spp. The ground layer is sparse tussock grasses. Occurs on fringes of major watercourses in the east of the bioregion. Riverine. (BVG1M: 16a). |
| Supplementary description | Neldner (1991), 1b (59); Wilson and Purdie (1990a), A2, W2 (74) |
| Protected areas | Bladensburg NP, Lark Quarry CP |
| Special values | 4.3.2: Ecosystem of high fauna diversity. 4.3.2a: Vegetation community of high fauna diversity. 4.3.2b: Vegetation community of high fauna diversity. |
| Fire management guidelines | SEASON: Wet to early dry season when soil is moist. INTENSITY: Low. INTERVAL: Burn surrounding vegetation at intervals compatible with fuel availability, seasonal conditions and grazing pressure. INTERVAL_MIN: 100. INTERVAL_MAX: 100. STRATEGY: Burning in areas surrounding riparian vegetation can be used to reduce fuel loads and reduce impact of wildfire (e.g., on habitat trees for fauna). These fires can be allowed to trickle into fringing riparian vegetation. ISSUES: Riparian vegetation is critical refuge for fauna. Fire can be used to manage seedlings and saplings of woody weeds (e.g., parkinsonia, mimosa bush and noogoora burr), but mature plants may be fire resistant and top kill will result in resprouting. |
| Comments | 4.3.2: Naturalised species associated with this regional ecosystem include *Malvastrum americanum. Highly modified floristic and structural composition due to total grazing pressure. Disturbed sandy areas are often invaded by introduced weeds. Scattered *Vachellia farnesiana shrubs (Ht1-2m) occur frequently. 4.3.2a: Was previously mapped as 4.3.4d. Naturalised species associated with this regional ecosystem include *Malvastrum americanum. Highly modified floristic and structural composition due to total grazing pressure. Disturbed sandy areas are often invaded by introduced weeds. Scattered *Vachellia farnesiana shrubs (Ht1-2m) occur frequently. 4.3.2b: Naturalised species associated with this regional ecosystem include *Malvastrum americanum. Highly modified floristic and structural composition due to total grazing pressure. Disturbed sandy areas are often invaded by introduced weeds. Scattered *Vachellia farnesiana shrubs (Ht1-2m) occur frequently. 4.3.2c: Highly modified floristic and structural composition due to total grazing pressure. Disturbed sandy areas are often invaded by introduced weeds. |
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.
