MVG 16 - ACACIA SHRUBLANDS Acacia hillii, Tanami Desert, NT (Photo: D. Keith) Overview The overstorey of MVG 16 is dominated by multi-stemmed acacia shrubs. The most widespread species is Acacia aneura (mulga). Mulga vegetation takes on a variety of structural expressions and is consequently classified partly within MVG 16 where the overstorey is dominated by multi-stemmed shrubs, partly within MVG 6 in accordance with the Kyoto Protocol definition of forest cover in Australia (trees > 2 m tall and crown cover > 20%, foliage projective cover > 10%); and partly within MVG 13 where the woody dominants are predominantly single-stemmed, but with crown cover less than 20%. Occurs where annual rainfall is below 250mm in southern Australia and below 350mm in northern Australia (Hodgkinson 2002; Foulkes et al. 2014). Species composition varies along rainfall gradients, with substrate and rainfall seasonality (Beadle 1981; Johnson and Burrows 1994). Transitions into MVG 13 Acacia woodlands with higher rainfall and varying soil types. Is most commonly found on red earth soils (Hodgkinson 2002). Facts and figures Major Vegetation Group MVG 16 - Acacia Shrublands Major Vegetation Subgroups (number of NVIS descriptions) 20. Stony mulga woodlands and shrublands NSW, NT, QLD, SA, WA 23. Sandplain Acacia woodlands and shrublands NSW, NT, QLD, SA, WA Typical NVIS structural formations Shrubland (tall, mid,) Open shrubland (tall, mid,) Sparse shrubland (tall, mid,) Number of IBRA regions 53 Most extensive in IBRA region Est. pre-1750 and present : Great Victoria Desert
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MVG 16 Acacia Shrublands DRAFT - Department of the Environment · Acacia pyrifolia and Acacia xiphophylla may be regionally abundant in parts of central and western Australia. The
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MVG 16 - ACACIA SHRUBLANDS
Acacia hillii, Tanami Desert, NT (Photo: D. Keith)
Overview
The overstorey of MVG 16 is dominated by multi-stemmed acacia shrubs. The most widespread
species is Acacia aneura (mulga).
Mulga vegetation takes on a variety of structural expressions and is consequently classified
partly within MVG 16 where the overstorey is dominated by multi-stemmed shrubs, partly
within MVG 6 in accordance with the Kyoto Protocol definition of forest cover in Australia
(trees > 2 m tall and crown cover > 20%, foliage projective cover > 10%); and partly within
MVG 13 where the woody dominants are predominantly single-stemmed, but with crown cover
less than 20%.
Occurs where annual rainfall is below 250mm in southern Australia and below 350mm in
northern Australia (Hodgkinson 2002; Foulkes et al. 2014).
Species composition varies along rainfall gradients, with substrate and rainfall seasonality
(Beadle 1981; Johnson and Burrows 1994).
Transitions into MVG 13 Acacia woodlands with higher rainfall and varying soil types.
Is most commonly found on red earth soils (Hodgkinson 2002).
Facts and figures
Major Vegetation Group MVG 16 - Acacia Shrublands
Major Vegetation Subgroups (number of NVIS descriptions)
20. Stony mulga woodlands and shrublands NSW, NT, QLD, SA, WA 23. Sandplain Acacia woodlands and shrublands NSW, NT, QLD, SA, WA