It was in the year 1863 that Alfred Russel Wallace established the Wallace Line, which is a biogeographical barrier.

The line, which spans over 25,000 islands between Southeast Asia and Australia, was observed to shift species during his voyages.

The line was a significant shift in the species on the Asian side, while the Australian side had a mix of Asian and Australian ancestry.

A new hypothesis suggests that the uneven species distribution along the Wallace Line was caused by drastic climatic fluctuations triggered by tectonic movements around 35 million years ago.

A science study used a computer model to replicate the effects of climate change on animals and found that Asian species were better adapted to the Malay Archipelago.

The primary climatic shifts during this period were not due to continental movements but the influence they exerted on Earth's oceans.

The model showed that the fluctuating climate had disparate impacts on different species, with Southeast Asia and the Malay Archipelago maintaining higher temperatures and greater precipitation.

The researchers aim to use their model to predict the potential effects of contemporary climate change on various species.