The Interim Biogeographic Regionalisation for Australia (IBRA) is a biogeographic regionalisation of Australia developed by the Australian government's Department of Sustainability, Environment, Water, Population, and Communities. It was developed for use as a planning tool, for example for the establishment of a national reserve system. The first version of IBRA was developed in 1993–94 and published in 1995.
The Tanami Desert is a desert in northern Australia, situated in the Northern Territory and Western Australia.
The Murchison is a loosely defined area of Western Australia located within the interior of the Mid West region. It was the subject of a major gold rush in the 1890s and remains a significant mining district. The Murchison is also included as an interim Australian bioregion. The bioregion is loosely related to the catchment area of the Murchison River and has an area of 281,205 square kilometres (108,574 sq mi).
Esperance Plains, also known as Eyre Botanical District, is a biogeographic region in southern Western Australia on the south coast between the Avon Wheatbelt and Hampton bioregions, and bordered to the north by the Mallee region. It is a plain punctuated by granite and quartz outcrops and ranges, with a semi-arid Mediterranean climate and vegetation consisting mostly of mallee-heath and proteaceous scrub. About half of the region has been cleared for intensive agriculture. Recognised as a bioregion under the Interim Biogeographic Regionalisation for Australia (IBRA), it was first defined by John Stanley Beard in 1980.
Mallee, also known as Roe Botanical District, is a biogeographic region in southern Western Australia. Located between the Esperance Plains, Avon Wheatbelt and Coolgardie bioregions, it has a low, gently undulating topography, a semi-arid mediterranean climate, and extensive Eucalyptus mallee vegetation. It has an area of 73,975.59 square kilometres (28,562.13 sq mi). About half of the region has been cleared for intensive agriculture. Recognised as a region under the Interim Biogeographic Regionalisation for Australia (IBRA), it was first defined by John Stanley Beard in 1980.
The Avon Wheatbelt is a bioregion in Western Australia. It has an area of 9,517,104 hectares. It is considered part of the larger Southwest Australia savanna ecoregion.
Hampton is an interim Australian bioregion located in southeastern coastal Western Australia, with a small portion (4%) extending into adjacent South Australia. It has an area of 1,088,198 hectares. The Hampton bioregion is part of the Coolgardie woodlands ecoregion.
Yalgoo is an interim Australian bioregion located in Western Australia. It has an area of 5,087,577 hectares. The bioregion, together with the Avon Wheatbelt and Geraldton Sandplains bioregions, is part of the larger Southwest Australia savanna ecoregion as classified by the World Wildlife Fund.
New England Tablelands, an interim Australian bioregion, is located mainly in New South Wales, comprising 3,002,213 hectares, of which 2,860,758 hectares or 95.23 per cent of the bioregion lies within New South Wales; and the residual within Queensland. This bioregion is one of the smaller bioregions in NSW, occupying 3.57 per cent of the state.
The Tasmanian Central Highlands is an interim Australian bioregion located in central highlands region of Tasmania, comprising 767,849 hectares.
The Tasmanian Northern Midlands is an interim Australian bioregion located in northern midlands region of Tasmania, comprising 415,445 hectares.
The Tasmanian Northern Slopes is an interim Australian bioregion located in the northern region of Tasmania, comprising 623,103 hectares.
Tasmanian West is an interim Australian bioregion located in the western region of Tasmania, comprising 1,565,077 hectares.
The Tasmanian South East is an interim Australian bioregion located in the south-eastern region of Tasmania, comprising 1,131,822 hectares.
The Tasmanian Southern Ranges is an interim Australian bioregion located in the southern region of Tasmania, comprising 757,228 hectares.
Ben Lomond is an interim Australian bioregion located in the north eastern region of Tasmania, comprising 657,500 hectares.
Furneaux is an interim Australian bioregion that includes the Furneaux Group of more than one hundred islands off the northeast coast of Tasmania, as well as the northeast corner of Tasmania and Wilson's Promontory on the Australian mainland. It covers an area of 537,543 hectares.
The Pacific Subtropical Islands is an interim Australian bioregion which includes Norfolk Island and Lord Howe Island. Its IBRA code is PSI.
Tiwi Cobourg is an interim Australian bioregion located in the Top End of the Northern Territory of Australia. It has an area of 1,010,580 hectares, which includes the Cobourg Peninsula of Arnhem Land, Croker Island, and the Tiwi Islands. The bioregion is part of the Arnhem Land tropical savanna ecoregion.
Gawler is an interim Australian bioregion located in South Australia. It has an area of 12,002,883 hectares. Gawler bioregion is part of the Tirari–Sturt stony desert ecoregion.
