Biodiversity publications archive

Refugia for biological diversity in arid and semi-arid Australia

Biodiversity Series, Paper No. 4
S.R. Morton, J. Short and R.D. Barker, with an Appendix by G.F. Griffin and G. Pearce
Biodiversity Unit
Department of the Environment, Sport and Territories, 1995

10. Refugia in Western Australia (continued)

10.5. Reference number WA5

Refuge area: Islands of Exmouth Gulf

Biogeographic region: Carnarvon

Type of refuge: Islands

Lat./Long. 22°25’S / 114°11’E; 22°08’S / 114°10’E

Quality of refuge: Significant (3)

Area (km²): <100

Chief refuge value

Islands free of foxes and cats and of human influence.

General description

Includes Roberts, Simpson and Doole Islands; Doole Island is 350 ha, and Simpson Island is 60 ha.

ANZECC-listed species

The Shark Bay mouse Pseudomys fieldi (E) was reintroduced to Doole Island (22° 28' S / 114° 10' E) in 19932.

Regional endemics

None identified.

Relict species

Tunney's Rat Rattus tunneyi present on Simpson and Roberts Islands – retreated from southern coastal areas from Geraldton to Karratha1, 3.

Other significant species

Macropus robustus on Simpson Island4.

Key threats

Introduced species, particularly predators such as the fox and cat.

Land tenure

Doole Island recently became a Nature Reserve; status of other islands is unknown.

Key references

1. Start and McKenzie (1992/3)

2. Speldewinde et al. (1994)

3. Kitchener and Vicker (1981)

4. Burbidge (1989)