Wallace's Line

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Related to Wallace's Line: Alfred Russel Wallace

Wal·lace's Line

 (wŏl′ĭ-sĭz) or Wal·lace Line (wŏl′ĭs)
A hypothetical line separating the Oriental and Australasian biogeographic regions and passing between the islands of Borneo and Sulawesi in the north and Bali and Lombok in the south.

[After Alfred Russell Wallace.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Wallace's line

(Biology) the hypothetical boundary between the Oriental and Australasian zoogeographical regions, which runs between the Indonesian islands of Bali and Lombok, through the Macassar Strait, and SE of the Philippines
[C20: named after Alfred Russel Wallace]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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References in periodicals archive ?
Wallace's line became a driving force of ethnological research on Timor.
"Intriguingly, the genetic data suggest that male Denisovans interbred with modern human females, indicating the potential nature of the interactions as small numbers of modern humans first crossed Wallace's Line and entered Denisovan territory," the study authors said.
Professor Alan Cooper of the University of Adelaide in Australia and Professor Chris Stringer of the Natural History Museum in the UK said that this pattern can be explained if the Denisovans had succeeded in crossing the famous Wallace's Line, one of the world's biggest biogeographic barriers which is formed by a powerful marine current along the east coast of Borneo.
Writing in the Pertanika Journal of Tropical Agricultural Science, the team describe how they examined the bats in two regions, West and East of Wallace's line. Using a genetic analysis technique known as 'DNA cytochrome b sequencing', they found that the Western and Eastern groups had a genetic distance of between 26 and 39 per cent.
His realization of the impossibility to understand geographical distribution of animals without taking into consideration all the possible changes which may have taken place in the distribution of land and masses and water converged in the formulation of Wallace's Line, a definite boundary in the Malay Archipelago.
There are six sections: Palaeogeographic background (2 papers), Palaeozoic and Mesozoic geology and biogeography (5), Wallace's Line (6), Plant geography and evolution (5), Non Primates (7), Primates (6), of which three (Morwood, Davidson and Smith) deal specifically with human history.
"Wallace's Line" still snakes across maps of Southeast Asia in zoology texts: these animals (e.g., tigers) above it; these (e.g., kangaroos) below it.