Regional ecosystem details for 11.3.22
| Regional ecosystem | 11.3.22 |
|---|---|
| Vegetation Management Act class | Of concern |
| Wetlands | Palustrine |
| Biodiversity status | Endangered |
| Subregion | 25 |
| Estimated extent1 | Pre-clearing 10 ha; Remnant 2021 10 ha |
| Short description | Springs associated with recent alluvia, but also including those on fine-grained sedimentary rocks, basalt, ancient alluvia and metamorphic rocks |
| Structure code | Bare |
| Description | Springs. Associated with recent alluvia, but also including those on fine-grained sedimentary rocks (shale), basalt, ancient alluvia and metamorphic rocks. Palustrine. (BVG1M: 34e). |
| Supplementary description | Habermehl (1982); Wilson, (1995); Fensham (1998b); Fensham and Fairfax (2002); Fensham et al. (2004) |
| Special values | 11.3.22: Habitat for threatened plant species including Eriocaulon carsonii, Myriophyllum artesium and Arthraxon hispidus. |
| Fire management guidelines | INTERVAL: Fire return interval not relevant. INTERVAL_MIN: 100. INTERVAL_MAX: 100. STRATEGY: Depending on position in the landscape, protection depends on broad-scale management of surrounding country, with numerous small fires throughout the year so that wildfires will be very limited in extent. ISSUES: If burning is to occur then implement when water level is deep enough to protect the bases of aquatic plants. Sedges are disadvantaged by repeated fires. Impact of fire on rare and threatened plants associated with mound springs that include Arthraxon hispidus and Dimeria sp. (Salvator Rosa R.J.Fensham RJF3643) should be considered. Boggomosses/springs can bounce back following fire but care should be taken where a dry peat layer has developed (particularly in degraded situations). Fire is an option for control of weeds (possibly in ungrazed situations). If riparian areas need to be burnt to reduce fuel loads then burning should occur when there is good soil moisture and active growth. |
| Comments | 11.3.22: Some of the springs are within the GAB recharge areas. Includes springs in the Dawson River Valley described as 'boggomosses'. Impacted by excavation, pig rooting, stock and feral horse trampling, artificial extraction, inundation by impoundments and the introduction of ponded pastures. |
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.
