Regional ecosystem details for 12.9-10.10
| Regional ecosystem | 12.9-10.10 |
|---|---|
| Vegetation Management Act class | Of concern |
| Wetlands | Not a Wetland |
| Biodiversity status | Endangered |
| Subregion | 2 |
| Estimated extent1 | Pre-clearing 10 ha; Remnant 2021 0 ha |
| Short description | Melaleuca nodosa low open forest on sedimentary rocks |
| Structure code | Low Open Forest |
| Description | Melaleuca nodosa low open forest or thicket, usually with Melaleuca sieberi and emergent Eucalyptus spp. Occurs on Cainozoic and Mesozoic sediments in coastal areas. Not a Wetland. (BVG1M: 21b). |
| Supplementary description | Bean et al. (1998), C6b |
| Fire management guidelines | SEASON: Late summer to mid-winter (after rain). INTENSITY: Planned and occasional unplanned burns (typically of higher intensity) influence the ecology of melaleuca ecosystems. INTERVAL: Heath 8-12 years, Sedge 12-20 years, Mixed grass/shrub 6-20 years. INTERVAL_MIN: 6. INTERVAL_MAX: 20. STRATEGY: Aim for a 25-70% burn mosaic (in association with surrounding ecosystems, as melaleuca ecosystems often just occur in patches or along natural drainage lines). Fires may, depending on the conditions and type of vegetation, burn areas larger than just the melaleuca ecosystem. Ensure secure boundaries from non fire-regime adapted ecosystems. Consider the needs of melaleuca ecosystems based on understorey (i.e., heath dominated, sedge dominated or mixed grass/shrub) when planning burns. High soil moisture (or presence of water on the ground) is required, as avoidance of peat-type fires must be maintained. ISSUES: Fire regimes for melaleuca ecosystems require further fire research. Melaleuca forests are fire-adapted, but too high an intensity or frequent fire will slow or prevent regeneration and lead to lower species richness (since these communities contain obligate seed regenerating species that require sufficient fire intervals to produce seed). High intensity fires may kill trees and lead to whipstick regeneration. Too frequent fire may result in a net loss of nutrients over time from an already nutrient poor system. Fire associations are significantly influenced by understorey composition. Melaleuca communities with a heath understorey should burn in a similar way to coastal heath (8-12 years). Sedge understorey communities will burn in association with the surrounding ecosystems (so will often burn with them but sometimes not, such that these communities have a slightly less fire frequency). Mixed understorey communities burn in a similar way to dry sclerophyll, in association with the surrounding dry sclerophyll, though somewhat less frequently due to the additional moisture present in melaleuca communities. |
| Comments | 12.9-10.10: Localised occurrences on other geologies in particular granite (e.g. Rodd's Peninsula). Patches often too small to map. Some Melaleuca nodosa dominated areas are an early sucessional stage of a disturbed Eucalyptus dominated regional ecosystem. These are usually mapped as non-remnant of the pre-clearing regional ecosystem. Habitat is being cleared or impacted by rural residential development in some areas. |
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.
