Indicative distribution
The areas shown in pink and/purple are the sub-regions where the species or community is known or predicted to occur. They may not occur thoughout the sub-region but may be restricted to certain areas.
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click here to see geographic restrictions).
The information presented in this map is only indicative and may contain errors and omissions.
Scientific name: Eucalyptus dissita
Gazetted date:
17 Nov 2000
Profile last updated:
13 Mar 2023
Description
A small tree 2 - 4 m in height with many slender stems with smooth, pale-green, yellow-brown or grey bark, which is shed in ribbons. Adult leaves are stiff and held erect, glossy green on both sides, and up to 8 cm long and 1.8 cm wide. Juvenile leaves are blue-green and spear-shaped. The spindle-shaped buds are held in clusters of at least eleven. The round gumnuts are 3 - 5 mm wide and 3 - 5 mm long.
Distribution
This mallee is only found in Gibraltar Range National Park on the eastern edge of the New England Tablelands. Found in 4 sub populations totalling 7ha.
Habitat and ecology
- Occurs on gentle slopes, just above the level of permanent water around the edge of high altitude swamps on gravely sand soils over granite.
- Locally dominant, occuring in small dense patches.
- The Eucalyptus dissita floristic assemblage has an open to closed shrubland to woodland structure 1–8 metres high with Eucalyptus dissita dominant and
Eucalyptus acaciiformis, Eucalyptus williamsiana and Eucalyptus olida sometimes present. Taller mid layer shrubs include Allocasuarina rigida subsp. rigida, Leptospermum novae-angliae and Leptospermum arachnoides. In the lower
mid layer, the shrubs Banksia marginata, Leptospermum brevipes and Baeckea omissa are frequent. Sedges such as Lepyrodia leptocaulis, Caustis flexousa, Lepidosperma limicola; grasses Entolasia stricta, Tetrarrhena juncea;
and forbs Goodenia bellidifolia occur commonly in the ground layer. The rare shrubs Grevillea acanthifolia subsp. stenomera, Persoonia rufa and Grevillea acerata occur
frequently in this community.
Regional distribution and habitat
Click on a region below to view detailed distribution, habitat and vegetation information.
Threats
- Appropriate fire regime is unknown. Establishment of appropriate fire regime is being established through post-fire assessment and monitoring.
- Risk of extinction because distribution is restricted.
- Risk of extinction because of small total population size.
- Poor knowledge of the species' abundance and distribution.
- Poor taxonomic knowledge of species
Recovery strategies
Priority actions are the specific, practical things that must be done to recover a threatened species, population or ecological
community. The Office of Environment and Heritage has identified
1 priority actions
to help recover the Gibraltar Mallee in New South Wales.
Activities to assist this species
- Stay on established tracks when visiting national parks to avoid damage to vegetation.
- Manage fire in areas of known habitat to encourage regeneration.
- Identify trackside populations and protect them during track-works.
- Protect high altitude swamps providing potential habitat from clearing or disturbance.
- Undertake research into the fire ecology of the species.
- Maintain viable exsitu seedbank and live collection.
- Monitor population dynamics and threats ofknown populations.
- Notify DPE of any additional populations of Gibraltar Mallee in the area.
Information sources
- Harden, G.J. (ed.) (2002) Flora of New South Wales. Volume 2, Revised Edition. UNSW, Sydney.
- NSW National Parks and Wildlife Service (2003) Threatened Species of the New England Tablelands and North West Slopes of NSW. (NSW NPWS, Coffs Harbour)
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