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A strong Madagascan rainforest MDE and no equatorward increase in species richness: re-analysis of ‘The missing Madagascan mid-domain effect’, by Kerr J.T., Perring M. & Currie D.J. (Ecology Letters 9:149–159, 2006)


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By reanalysing inaccurately presented data of Kerr et al. (2006), we refute their claims that area-corrected species richness of endemic Madagascan birds and mammals increases toward the Equator and is best explained by environmental factors, and that the rainforest mid-domain effect (MDE) Lees et al. (1999) demonstrated is artefactual.

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