formerly had a wider range. Native birds include the malleefowl (Leipoa ocellata) and western grasswren (Amytornis textilis). A subspecies of purple-backed fairywren, Malurus assimilis bernieri, is found only on Bernier and Dorre islands, and the black and white fairy wren (Malurus leucopterus leucopterus), a subspecies of white-winged fairywren, is found only on Dirk Hartog Island. The sandhill frog (Arenophryne rotunda) is a limited-range species found in the Edel subregion and the northern Geraldton Sandplains bioregion. Land use The predominant land use is livestock pasturing on natural vegetation. Protected areas 12.53% of the Yalgoo bioregion is in protected areas. Much of the Edel subregion is within the Shark Bay World Heritage area. 32.28% of the subregion is protected, and protected areas include Shark Bay Marine Park, Dirk Hartog Island National Park, Zuytdorp Nature Reserve, and Toolonga Nature Reserve. Only 3.56 of the Tallering subregion is in protected areas. References Further reading Thackway, R and I D Cresswell (1995) An interim biogeographic regionalisation for Australia : a framework for setting priorities in the National Reserves System Cooperative Program Version 4.0 Canberra : Australian Nature Conservation Agency, Reserve Systems Unit, 1995. Biogeography of Western Australia IBRA regions Mediterranean forests, woodlands, and scrub in Australia Southwest Australia Mallee Woodlands and Shrublands