Nature conservation

Biodiversity Reform

South Western Slopes - conservation status analysis

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

The numbered landscapes referred to in the text are described briefly in the table at the bottom of the page. These landscapes were identified in the State Conservation Monitoring Project. In this project, a total of 1167 landscapes were described, combining three layers: ruggedness, geology and subregions.

Landscape-scale conservation

There are 109 landscapes in the South Western Slopes, the majority of which are of low to moderate ruggedness (NPWS in prep).

The alluvial, low ruggedness and highly cleared landscape, Landscape 659, dominates the bioregion, occupying 2,170,400.00 hectares or 26.90 per cent of the bioregional area. The majority of the remaining landscapes (93) occupy less than one per cent of the bioregional area.

National parks and nature reserves

Forty-four of the 109 landscapes are represented in the bioregional system of national parks and nature reserves. The range of landscapes included in this system is larger than that encompassed by any of the other conservation tenures. Eleven landscapes have greater than 20 per cent of their bioregional area preserved, with 6 of this group having greater than 30 per cent and 3 having greater than 70 per cent.

In terms of area protected, the largest area protected is 14,637.53 hectares (or 7.30 per cent of its bioregional area) of Landscape 640. This landscape is an area of moderate ruggedness with a dominant geology of sedimentary (mixed grain) occurring in subregion NSS1 - Northern Inland Slopes (NIS), Upper Slopes.

In terms of proportion conserved, the small Landscape 1053 (of less than or equal to 100 ha) is 100 per cent reserved. Only 57.74 hectares (<0.01 per cent) of the dominant landscape is represented in the reserve system and this is the second smallest area reserved (of those landscapes reserved).

Voluntary conservation agreements

Eleven landscapes are represented in VCAs in the bioregion. Only one of these, Landscape 672, is not included in national parks and nature reserves. Although this landscape is only very marginally represented (.25 ha) in the VCA program, it is significantly cleared (97.72 per cent). The area and percentage area of landscapes in VCAs is detailed below:

  • Landscape 672 with 0.25 hectares or <0.01 per cent of its bioregional area;
  • Landscape 659 with 2.43 hectares or <0.01 per cent of its bioregional area;
  • Landscape 637 with 2.56 hectares or <0.01 per cent of its bioregional area;
  • Landscape 610 with 3.64 hectares or <0.01 per cent of its bioregional area;
  • Landscape 686 with 12.11 hectares or 0.01 per cent of its bioregional area;
  • Landscape 628 with 33.86 hectares or 0.10 per cent of its bioregional area;
  • Landscape 614 with 103.48 hectares or 0.02 per cent of its bioregional area;
  • Landscape 635 with 104.45 hectares or 0.02 per cent of its bioregional area;
  • Landscape 684 with 192.80 hectares or 0.18 per cent of its bioregional area;
  • Landscape 668 with 206.90 hectares or 0.02 per cent of its bioregional area; and
  • Landscape 629 with 221.65 hectares or 0.38 per cent of its bioregional area.

 

Wildlife refuges

Thirty-three landscapes are represented in the wildlife refuge program. Eight of these are not included in national parks or nature reserves. The areas and proportions of these 8 landscapes are listed below:

  • Landscape 679 with 13.24 hectares or 0.09 per cent of its bioregional area;
  • Landscape 721 with 71.24 hectares or 0.17 per cent of its bioregional area;
  • Landscape 680 with 0.96 hectares or 0.32 per cent of its bioregional area;
  • Landscape 613 with 172.28 hectares or 0.72 per cent of its bioregional area;
  • Landscape 672 with 569.87 hectares or 1.45 per cent of its bioregional area;
  • Landscape 695 with 212.96 hectares or 4.53 per cent of its bioregional area;
  • Landscape 980 with 491.49 hectares or 7.12 per cent of its bioregional area; and
  • Landscape 725 with 115.85 hectares or 11.59 per cent of its bioregional area.

 

Flora reserve

Thirteen landscapes are represented in flora reserves in the bioregion. Six of these (1066, 1050, 1061, 1042, 1083 and 1074) are not represented in national parks and nature reserves. Significantly, Landscape 1083 has more than 30 per cent of its area included in flora reserves. Landscape 659 does receive some additional representation in flora reserves but its level of conservation is relatively small given its bioregional area. The areas and proportions of landscapes included are:

  • Landscape 1066 with 0.65 hectares or 0.01 per cent of its bioregional area;
  • Landscape 1050 with 27.39 hectares or 0.36 per cent of its bioregional area;
  • Landscape 1061 with 30.27 hectares or 3.78 per cent of its bioregional area;
  • Landscape 659 with 72.11 hectares or <0.01 per cent of its bioregional area;
  • Landscape 610 with 77.65 hectares or 0.01 per cent of its bioregional area;
  • Landscape 674 with 147.48 hectares or 0.13 per cent of its bioregional area;
  • Landscape 640 with 215.65 hectares or 0.11 per cent of its bioregional area;
  • Landscape 668 with 228.61 hectares or 0.03 per cent of its bioregional area;
  • Landscape 1042 with 248.35 hectares or 22.58 per cent of its bioregional area;
  • Landscape 1040 with 538.38 hectares or 8.55 per cent of is bioregional area;
  • Landscape 1083 with 763.20 hectares or 38.16 per cent of its bioregional area;
  • Landscape 1074 with 851.43 hectares or 19.35 per cent of its bioregional area; and
  • Landscape 609 with 1756.98 hectares or 0.30 per cent of its bioregional area.

 

Of those landscapes also represented within the reserve program it is worth noting that 19,958.69 hectares (or .92 per cent of its bioregional area) of Landscape 659 (the dominant landscape in the bioregion) receives greater representation in the wildlife refuges in the bioregion than from any other of the conservation mechanisms surveyed.

Property agreements

Thirty landscapes are represented in property agreements in the South Western Slopes. Of these landscapes, 4 are not also represented in national parks and nature reserves. The area and proportion of these landscapes are listed below:

  • Landscape 672 with 10.05 hectares or 0.03 per cent of its bioregional area;
  • Landscape 676 with 13.73 hectares or 0.03 per cent of its bioregional area;
  • Landscape 721 with 18.68 hectares or 0.05 per cent of its bioregional area; and
  • Landscape 956 with 31.83 hectares or 0.30 per cent of its bioregional area.

 

Conservation and clearing

The South Western Slopes is a highly cleared bioregion. More than 6 million hectares or 85.08 per cent of the bioregion has been cleared. At the landscape scale, 71 landscapes are more than 70 per cent cleared (20 are 100 per cent, 15 between 90 and 99 per cent, 26 between 80 and 89 per cent and 10 are between 70 and 79 per cent cleared).

Many of those landscapes which are 100 per cent cleared are in fact relatively small landscapes, but the areas cleared for landscapes in the groups between 90 and 70 per cent are often substantial. Only 10 landscapes are indicated as being intact and these are nearly all smaller than or equal to 100 hectares. The most cleared landscape in terms of area cleared is the dominant landscape, Landscape 659, with 1,951,400 hectares or 89.91 per cent of its area cleared.

Not surprisingly, conservation of landscapes in the bioregion is not comprehensive, with just over half (61) of the 109 landscapes in the bioregion having some representation in conservation tenures.

Profiles of landscapes referred to above
Landscape numberDescription
609
Landscape 609 is an area of low ruggedness with a dominant geology of sedimentary (mixed grain) occurring in subregion NSS1 - Northern Inland Slopes (NIS), Upper Slopes.
610
Landscape 610 is an area of low ruggedness with a dominant geology of acid igneous intrusives occurring in subregion NSS1 - Northern Inland Slopes (NIS), Upper Slopes.
613
Landscape 613 is an area of low ruggedness with a dominant geology of acid metamorphics occurring in subregion NSS1 - Northern Inland Slopes (NIS), Upper Slopes.
614
Landscape 614 is an area of low ruggedness with a dominant geology of western alluvials (inactive) occurring in subregion NSS1 - Northern Inland Slopes (NIS), Upper Slopes.
628
Landscape 628 is an area of moderate ruggedness with a dominant geology of sedimentary (coarse grain) occurring in subregion NSS1 - Northern Inland Slopes (NIS), Upper Slopes.
629
Landscape 629 is an area of low ruggedness with a dominant geology of sedimentary (coarse grain) occurring in subregion NSS1 - Northern Inland Slopes (NIS), Upper Slopes.
635
Landscape 635 is an area of low ruggedness with a dominant geology of acid volcanics (extrusives) & associated sediments occurring in subregion NSS1 - Northern Inland Slopes (NIS), Upper Slopes.
637
Landscape 637 is an area of low ruggedness with a dominant geology of sedimentary (fine grain-non calcareous) occurring in subregion NSS1 - Northern Inland Slopes (NIS), Upper Slopes.
640
Landscape 640 is an area of moderate ruggedness with a dominant geology of sedimentary (mixed grain) occurring in subregion NSS1 - Northern Inland Slopes (NIS), Upper Slopes.
659
Landscape 659 is an area of low ruggedness with a dominant geology of western alluvials (inactive) occurring in subregion NSS2 - Lower Slopes.
668
Landscape 668 is an area of low ruggedness with a dominant geology of sedimentary (mixed grain) occurring in subregion NSS2 - Lower Slopes.
672
Landscape 672 is an area of low ruggedness with a dominant geology of sedimentary (calcareous) occurring in subregion NSS1 - Northern Inland Slopes (NIS), Upper Slopes.
674
Landscape 674 is an area of low ruggedness with a dominant geology of western floodplains (active) occurring in subregion NSS2 - Lower Slopes.
676
Landscape 676 is an area of low ruggedness with a dominant geology of acid volcanics (extrusives) & associated sediments occurring in subregion NSS2 - Lower Slopes.
679
Landscape 679 is an area of low ruggedness with a dominant geology of inland plain sediments occurring in subregion NSS1 - Northern Inland Slopes (NIS), Upper Slopes.
680
Landscape 680 is an area of low ruggedness with a dominant geology of eastern alluvials occurring in subregion NSS1 - Northern Inland Slopes (NIS), Upper Slopes.
684
Landscape 684 is an area of low ruggedness with a dominant geology of sedimentary (coarse grain) occurring in subregion NSS2 - Lower Slopes.
686
Landscape 686 is an area of moderate ruggedness with a dominant geology of acid volcanics (extrusives) & associated sediments occurring in subregion NSS1 - Northern Inland Slopes (NIS), Upper Slopes.
695
Landscape 695 is an area of moderate ruggedness with a dominant geology of sedimentary (calcareous) occurring in subregion NSS1 - Northern Inland Slopes (NIS), Upper Slopes.
721
Landscape 721 is an area of low ruggedness with a dominant geology of basic/intermediate igneous & associated sediments & metasediments occurring in subregion NSS2 - Lower Slopes.
725
Landscape 725 is an area of high ruggedness with a dominant geology of acid volcanics (extrusives) & associated sediments occurring in subregion NSS1 - Northern Inland Slopes (NIS), Upper Slopes.
956
Landscape 956 is an area of low ruggedness with a dominant geology of sedimentary (mixed grain) occurring in subregion SEH6 - Murrumbateman.
980
Landscape 980 is an area of low ruggedness with a dominant geology of ultra basic igneous intrusives occurring in subregion NSS1 - Northern Inland Slopes (NIS), Upper Slopes.
1040
Landscape 1040 is an area of moderate ruggedness with a dominant geology of acid volcanics (extrusives) & associated sediments occurring in subregion SEH14 - Bondo.
1042
Landscape 1042 is an area of low ruggedness with a dominant geology of acid volcanics (extrusives) & associated sediments occurring in subregion SEH14 - Bondo.
1050
Landscape 1050 is an area of moderate ruggedness with a dominant geology of acid igneous intrusives occurring in subregion SEH14 - Bondo.
1061
Landscape 1061 is an area of low ruggedness with a dominant geology of basic/intermediate igneous & associated sediments & metasediments occurring in subregion SEH14 - Bondo.
1066
Landscape 1066 is an area of low ruggedness with a dominant geology of acid igneous intrusives occurring in subregion SEH14 - Bondo.
1074
Landscape 1074 is an area of low ruggedness with a dominant geology of sedimentary (mixed grain) occurring in subregion SEH14 - Bondo
1083
Landscape 1083 is an area of moderate ruggedness with a dominant geology of sedimentary (mixed grain) occurring in subregion SEH14 - Bondo

Page last updated: 26 April 2016