Nature conservation

Threatened species

Hunter Valley Weeping Myall (Acacia pendula) Woodland - profile

Indicative distribution


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Key:
known
predicted
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: Hunter Valley Weeping Myall (Acacia pendula) Woodland
Conservation status in NSW: Not listed
Commonwealth status: Critically Endangered
Gazetted date: 01 Aug 2005
Profile last updated: 06 Apr 2022

Description

The ecological community is a low forest to woodland with a canopy dominated by Acacia pendula (weeping myall). It occurs on undulating plains that are associated with a range of grassy woodland communities in the Hunter Valley (NSW). The occurrences of A. pendula in the Hunter region represent a disjunct and easternmost outlier of the species’ distribution.  The stands of Acacia pendula (weeping myall) in the Hunter Valley are disjunct from the main distribution of this species further west, inland of the Great Dividing Range. The nearest major occurrence is on the Liverpool Plains, 100 km to the northwest. It is thought that Hunter Valley stands are a relic from the last glaciation when the Hunter Valley is likely to have been dominated by 'western semi-arid' flora (Tame, 1992a). The ecological community lies on the floor of the Hunter Valley, at elevations of 60 to 150 metres above sea level (ASL). The region comprises sediments of Permian age dissected by unconsolidated alluviums associated with the Hunter River (Nashar, 1964; Tame, 1992a; NSW Department of Mineral Resources, 1999). The southern rim of the Hunter Valley comprises younger sediments forming the Triassic Narrabeen sequence, while the northern rim is largely older Carboniferous sediments and Tertiary basalt flows. Acacia pendula in the Hunter Valley generally, occurs in small stands on heavy, brown clay soils. Peake (2006) suggested that heavy clay soils were the favoured substrate, and that many sites appeared to be located in flood washouts. 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

The ecological community occurs within the Hunter Valley region of NSW, which encompasses the northern part of the Sydney Basin IBRA bioregion and the southern part of the NSW North Coast bioregion (Department of the Environment, 2013).The known stands of the ecological community occur between the localities of Warkworth and Wybong (Umwelt, 2006a; Bell, 2007a; Umwelt, 2008), including a well-documented patch at Jerrys Plains cemetery.

Regional distribution and habitat

Click on a region below to view detailed distribution, habitat and vegetation information.


Recovery strategies

IBRA Bioregion IBRA Subregion Known or predicted Geographic restrictions region
Brigalow Belt SouthLiverpool Range Known None
NSW North CoastEllerston Known None
NSW North CoastTomalla Known None
NSW North CoastUpper Hunter Known None
Sydney BasinHunter Known None
Sydney BasinKerrabee Known None
Sydney BasinYengo Known None