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The ‘Wallace Line’, a floral boundary, roughly divides
The Southeast Asian region from the Australian
Russia from North America
Madagascar from the rest of Africa
The Central American region from the South American
Wallace Line is boundary between the Oriental and Australian faunal regions, proposed by the 19th-century British naturalist Alfred Russel Wallace. The line extends (see image) from the Indian Ocean through the Lombok Strait (between the islands of Bali and Lombok), northward through the Makassar Strait (between Borneo and Celebes), and eastward, south of Mindanao, into the Philippine Sea. Although many zoogeographers no longer consider the Wallace Line to be a regional boundary, it does represent an abrupt limit of distribution for many major animal groups. Many fish, bird, and mammal groups are abundantly represented on one side of the Wallace Line but poorly or not at all on the other side.
By: Rakesh Kumar Barik ProfileResourcesReport error
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