Nature conservation

Threatened species

Mount Gibraltar Forest in the Sydney Basin Bioregion - profile

Indicative distribution

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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. ( click here to see geographic restrictions). The information presented in this map is only indicative and may contain errors and omissions.
Scientific name: Mount Gibraltar Forest in the Sydney Basin Bioregion
Conservation status in NSW: Endangered Ecological Community
Commonwealth status: Not listed
Gazetted date: 16 Mar 2001
Profile last updated: 23 Mar 2022


Mount Gibraltar Forest is a variable community, existing as either open forest, woodland or scrub. The floristic composition largely reflects topographic position and aspect. The dominant tree species are Narrow-leaved Peppermint Eucalyptus radiata, Sydney Peppermint E. piperita and Gully Gum E. smithii on the upper slopes, and E. radiata, E. piperita, Brown Barrel E. fastigata and Manna Gum E. viminalis on deeper soils on southern aspects. A shrub or small tree layer dominated by species such as Acacia melanoxylon, Hedycara angustifolia, Notelea venosa and Pittosporum undulatum occurs in the more sheltered areas. Dominant groundlayer species include Stypandra glauca, Dianella caerulea, Dichondra repens and Themeda australis in drier, more exposed sites. In more sheltered sites, fern species such as Blechnum cartilagineum, Doodoa aspera and Pterideum esculentum, and vines such as Eustrephus latifolius and Tylophora barbata are dominant.


Mount Gibraltar Forest is confined to a small number of pockets in the Southern Highlands region. The main occurrence is on Mount Gibraltar near Bowral and Mittagong. Minor occurrences of the community are known from Mount Misery, Mount Flora, Cockatoo Hill and Mount Jellore. Occurs in the Wingecarribee local government area, but may occur elsewhere in the Sydney Basin Bioregion.

Habitat and ecology

  • Restricted to clay soils on microsyenite intrusions in the central parts of the Southern Highlands.
  • Occurs on gentle to steep slopes with correspondingly deep and shallow soils respectively; combined with aspect, these factors contribute to the variability evident in the floral composition of this community.
  • Remnants may provide habitat for the Powerful Owl Ninox strenua, which has been recorded in vegetation adjoining the main remnants of Mount Gibraltar Forest.
  • Disturbed remnants are considered to form part of the community, including where the vegetation would respond to assisted natural regeneration.
  • Has been cleared for agriculture and rural development and most remnants are small and isolated.

Regional distribution and habitat

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Recovery strategies

Activities to assist this species

Information sources

IBRA Bioregion IBRA Subregion Known or predicted Geographic restrictions region
Sydney BasinBurragorang Known Within 12 km of Mittagong
Sydney BasinMoss Vale Known Within 12 km of Mittagong