Sundaland - Human Migrations

Human Migrations

Previously, humans were believed to have migrated southward, from the East Asia mainland to Taiwan and then to the rest of Maritime Southeast Asia. However, recent findings point to the submerged Sundaland as the probable cradle of Asian population: thus the "Out of Sundaland" theory.

A study from Leeds University and published in Molecular Biology and Evolution, examining mitochondrial DNA lineages, suggested that humans had been occupying the islands of Southeast Asia for a longer period than previously believed. Population dispersals seem to have occurred at the same time as sea levels rose, which may have resulted in migrations from the Philippine Islands to as far north as Taiwan within the last 10,000 years. The population migrations were most likely to have been driven by climate change — the effects of the drowning of an ancient continent. Rising sea levels in three massive pulses may have caused flooding and the submerging of the Sunda continent, creating the Java and South China Seas and the thousands of islands that make up Indonesia and the Philippines today.

A 2009 genetic study published by the 2009 Human Genome Organization Pan-Asian SNP Consortium found that Asia was originally settled by humans via a single southern route. The migration came from Africa via India, into Southeast Asia and what are now islands in the Pacific, and then later up to the eastern and northern Asian mainland.

Genetic similarities were found between populations throughout Asia and an increase in genetic diversity from northern to southern latitudes. Although the Chinese population is very large, it has less variation than the smaller number of individuals living in Southeast Asia, because the Chinese expansion occurred very recently, following the development of rice agriculture — within only the last 10,000 years.

Oppenheimer locates the origin of the Austronesians in Sundaland and its upper regions. Genetic research reported in 2008 indicates that the islands which are the remnants of Sundaland were likely populated as early as 50,000 years ago, contrary to a previous hypothesis that they were populated as late as 10,000 years ago from Taiwan.