Western Australian mulga shrublands

The Western Australian Mulga shrublands is a deserts and xeric shrublands ecoregion of inland Western Australia.[2] It is one of Australia's two mulga ecoregions, characterized by dry woodlands of mulga trees (Acacia aneura and related species) interspersed with areas of grassland and scrub. [3][4][5]

Western Australian Mulga shrublands
Acacia aneura habit.jpg
Mulga tree (Acacia aneura) in mulga shrubland.
Ecoregion AA1310.svg
Location of the Western Australian Mulga shrublands ecoregion.
Biomedeserts and xeric shrublands
Area461,958 km2 (178,363 sq mi)
StateWestern Australia
Coordinates26°30′S 119°15′E / 26.5°S 119.25°E / -26.5; 119.25Coordinates: 26°30′S 119°15′E / 26.5°S 119.25°E / -26.5; 119.25
Conservation statusVulnerable
Protected14,900 km² (3%)[1]

Location and descriptionEdit

This is a hot, dry area with little rainfall.

The region consists of the Gascoyne and Murchison bioregions of the Interim Biogeographic Regionalisation for Australia (IBRA).[6][7]

The IBRA regions, with Gascoyne in red
The IBRA regions, with Murchison in red

Flora and faunaEdit

The predominant vegetation is mulga trees, a type of acacia adapted to the hot, dry climate by means of long tap roots. In some areas the mulga trees are surrounded by Eriachne grassland.

Wildlife of the region includes birds such as emus, Australian bustards and honeyeaters.

Most of the area is uninhabited but there is some mining activity and some sheep grazing, both of which cause damage to native habitats.

Protected areasEdit

Protected areas in the ecoregion include Collier Range National Park.

External linksEdit

  • "Western Australian Mulga shrublands". Terrestrial Ecoregions. World Wildlife Fund.


  1. ^ Eric Dinerstein, David Olson, et al. (2017). An Ecoregion-Based Approach to Protecting Half the Terrestrial Realm, BioScience, Volume 67, Issue 6, June 2017, Pages 534–545; Supplemental material 2 table S1b. [1]
  2. ^ "Western Australian Mulga shrublands". Terrestrial Ecoregions. World Wildlife Fund.
  3. ^ "Map of Ecoregions 2017". Resolve. Retrieved August 20, 2021.
  4. ^ "Western Australian Mulga shrublands". Digital Observatory for Protected Areas. Retrieved August 20, 2021.
  5. ^ "Western Australian Mulga shrublands". The Encyclopedia of Earth. Retrieved August 20, 2021.
  6. ^ Environment Australia. "Revision of the Interim Biogeographic Regionalisation for Australia (IBRA) and Development of Version 5.1 - Summary Report". Department of the Environment and Water Resources, Australian Government. Archived from the original on 2006-09-05. Retrieved 2007-01-31. Cite journal requires |journal= (help)
  7. ^ IBRA Version 6.1 data