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The Indochinese–Sundaic faunal transition at the Isthmus of Kra: an analysis of resident forest bird species distributions by Jennifer B. Hughes; Philip D. Round; David S. Woodruff is a Environmental Science article available to read on EtoBox.

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## Abstract **Aim** To establish the geographical position of the biogeographical transition between Indochinese and Sundaic faunas using distributional data for the best‐documented taxon, the birds. **Methods** Distributional data of 544 resident forest and forest edge bird species of Thailand and the Thai–Malay peninsula were examined at 45 sites spanning 15° of latitude from northern‐most Thailand to the southern peninsular Malaysia. Sites were grouped into 23 degree or half‐degree latitudinal zones and avifaunal similarity coefficients were calculated between each zone. **Results** A Mantel test revealed a significant transition between northern Indochinese and southern Sundaic (Indomalay) avifauna assemblages just north of the Isthmus of Kra (10°30′ N). Northern and southern range limits of 152 species (> 269 species and subspecies combined) lie between 11° and 13° N. **Main conclusions** This transition between zoogeographical subregions is not coincident with the widely recognized transition between floristic provinces which is traditionally placed 400–500 km further south at the Kangar–Pattani line, but is associated with a change from wet seasonal evergreen dipterocarp rai

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Author

Jennifer B. Hughes; Philip D. Round; David S. Woodruff

Publisher

John Wiley and Sons; Wiley (Blackwell Publishing); Blackwell Publishing Inc.; Wiley; JSTOR (ISSN 0305-0270)

Published

2003

Language

EN

Field

Environmental Science (Physical Sciences)