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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The information presented in this map is only indicative and may contain errors and omissions.
Scientific name: Castlereagh Scribbly Gum and Agnes Banks Woodlands of the Sydney Basin Bioregion
Gazetted date:
17 May 2015
Profile last updated:
04 Mar 2024
Description
The Castlereagh Scribbly Gum and Agnes Banks Woodlands ecological community is located in the Sydney Basin Bioregion as defined by version 7 of the Interim Biogeographic Regionalisation of Australia (IBRA v 7, 2012). It occurs primarily in the Castlereagh area in the north-west of the Cumberland Plain (also referred to as the Cumberland sub-region), with
other known occurrences near Holsworthy (some patches at Holsworthy are just outside the Cumberland sub-region), Kemps Creek and Longneck Lagoon (Tozer et al., 2010; NSW
Scientific Committee, 2013). The ecological community occurs mostly in the Cumberland (SYB08) IBRA sub-region, with small occurrences just outside the Cumberland sub-region in the Sydney Cataract (SYB10), Wollemi (SYB04) and Burragorang (SYB09) sub-regions. The Castlereagh Scribbly Gum and Agnes Banks Woodlands ecological community is typically a low woodland, with canopy species reaching an average 15 m in height, but with some trees growing to around 20 m (Benson, 1981; Keith, 2004; Tozer et al., 2010). The ecological community’s understorey has a prominent and diverse mid-layer of sclerophyll shrubs. It typically has a patchy ground cover of sedges and grasses. However, in areas of poorly drained soil there may be less species diversity in the mid layer and the ground layer may contain a high diversity of sedges and grasses (Benson, 1981; Tozer et al., 2010). The isolation of the alluvial deposits in the Hawkesbury-Nepean river valley and differences in the soil characteristics have led to the development of differences in species composition and abundance across the range of the ecological community (Keith, 2004). For example, this is expressed in differing abundance of Melaleuca and Banksia species in the mid stratum. In addition, the Agnes Banks vegetation occurs on aeolian sand and can contain a number of species reminiscent of communities closer to the coast, such as Dillwynia glaberrima, Ricinocarpos pinifolius (wedding bush) and Banksia aemula (wallum). In order to meet the definition of the TEC sites must satisfy condition criteria stipulated in the Listing Advice and/or Conservation Advice. Typically condition is assessed by reference to patch size and vegetation structure thresholds or species composition metrics.
Distribution
Regional distribution and habitat
Click on a region below to view detailed distribution, habitat and vegetation information.
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
0 priority actions
to help recover the Castlereagh Scribbly Gum and Agnes Banks Woodlands of the Sydney Basin Bioregion in New South Wales.
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