Nature conservation

Biodiversity Reform

Mulga Lands - conservation status analysis

This page shows the conservation status of the bioregion, based on protection of landscapes within formal conservation management mechanisms.

Landscape-scale conservation

The Mulga Lands Bioregion is composed of 35 landscapes, all of which are also found in other bioregions, except one, the Paroo-Warrego/Mt Murchison landscape, which is endemic to the NSW area of the bioregion (Mitchell in prep).

The size of landscapes in the bioregion is varied, ranging from the Scopes Alluvial Plains landscape, which occupies the smallest area of the bioregion (6.82 hectares or 0.0001 per cent), to the largest landscape, the Paroo-Warrego Sandplains, which occupies almost 17.31 per cent or 1,134,649 hectares of the bioregion.

Landscapes in the Mulga Lands Bioregion are not comprehensively reserved or conserved, with less than a third achieving representation in the reserve (national parks and nature reserves) system and none achieving greater than 20 per cent or even 10 per cent reservation.

National parks and nature reserves

Eleven of the 36 Mulga Lands landscapes occur in national parks and nature reserves, but all are less than 10 per cent represented in this program. The endemic Paroo-Warrego/Mt Murchison landscape is not included in the reserve system.

Wildlife refuges

Wildlife refuges include 15 landscapes, 9 of which are also included in the reserve system, while 6 are not. The Mid Darling Alluvial Plains landscape has 31 per cent of its bioregional area included in wildlife refuges and the endemic Paroo-Warrego/Mt Murchison landscape has 13.21 per cent of its bioregional area included in wildlife refuges. The wildlife refuge program is important for the conservation of these 2 landscapes, as they are not protected under any of the other surveyed mechanisms.

Conservation and clearing

While a relatively small proportion of the Mulga Lands Bioregion has been cleared of its native canopy (about 16,800 hectares or 0.26 per cent of the bioregional area), this type of clearing is concentrated in 10 of the landscapes, with the majority of clearing occurring in 5 of these. The Paroo-Warrego Channels and Floodouts landscape has had the greatest area cleared, 6,400 hectares or 0.75 per cent of its area, while 2,700 hectares or almost 16 per cent of the Mid Darling Channels and Floodplains landscape has been cleared.

Less than 5 per cent of each of these landscapes occurs in conservation tenures in the bioregion and the Mid Darling Channels and Floodplains landscape has no representation in reserves.

Clearing of the native canopy is not indicated in the one endemic landscape of the bioregion, the Paroo-Warrego/Mt Murchison landscape, but this does not guarantee that the understorey is not undergoing significant degradation.

 

Page last updated: 26 April 2016