Justification of Ecoregion Delineation
The Southwest Australia Savannas ecoregion comprises three IBRA’s: ‘Geraldton Sandplains’, ‘Avon Wheatbelt’, and ‘Yalgoo’ (Thackway and Cresswell 1995). Vegetation includes savanna woodland, mallee scrub, and heath. This region is a transitional zone between mediterranean climates and the central arid regions. A portion falls within the ‘South-west Botanical Province’ Centre of Plant Diversity (Beard 1995), and the southern portion of this ecoregion falls within the ‘South-west Australia’ Endemic Bird Area (Stattersfield et al. 1998).
Beard, J. S. 1995. South-west Botanical Province. Pages 484 – 489 in S. D. Davis, V. H. Heywood and A. C. Hamilton. editors. Centres of Plant Diversity. Volume 2. Asia, Australasia, and the Pacific. WWF/IUCN, IUCN Publications Unit, Cambridge, UK.
Stattersfield, A. J., M. J. Crosby, A. J. Long, and D. C. Wedge. 1998. Endemic Bird Areas of the World. Priorities for biodiversity conservation. BirdLife Conservation Series No. 7. BirdLife International, Cambridge, United Kingdom.
Thackway, R. and I. D. Cresswell. editors. 1995. An Interim Biogeographic Regionalisation for Australia: a framework for establishing the national system of reserves, Version 4.0. Australian Nature Conservation Agency, Canberra.
Prepared by: Angas Hopkins