EVERYDAY SCIENCE

Detailed explanation-1: -Wallace’s line An imaginary line that runs between the Indonesian islands of Bali and Lombok and represents the separation of the Australian and Oriental faunas.

Detailed explanation-2: -The Wallace and Weber Lines. The Wallace and Weber lines are imaginary dividers used to mark the difference between species found in Australia and Papua New Guinea and Southeast Asia. This is especially apparent when considering the difference in mammals between the two regions.

Detailed explanation-3: -Wallace (1860) suggested a line running between Bali and Lumbok; Borneo and Celebes and between Philippines and Sangi and Talaud. Huxley named it Wallace’s Line. The differences between the fauna of Bali and Lumbok, separated by 15 miles sea was especially emphasized while marking the line.

Detailed explanation-4: -The Wallace Line, which delineates the faunas of Australia and southeast Asia, represents perhaps one of the most distinct biogeographic divisions observed [4], where species west of the line have a predominately Asiatic origin and those to the east show a mixture of Asian and Australian origins.

Detailed explanation-5: -Wallace as the dividing line between Asian and Australian fauna in the Malay Archipelago. Weber’s line is a line of supposed ‘faunal balance’ between the Oriental and the Australasian faunal regions within Wallacea.