What Was Unique About Wallace Trip From Bali To Lombok?

Why are the faunas of Bali and Lombok so different?

Although the distance between Bali and Lombok is only 35 kilometres, the Lombok Strait is so deep that it has been filled by water for millions of years. Wallace identified the 250m depth of the Lombok Strait as the single most compelling explanation for the differences between Asian and Australian animals.

What is the significance of the Wallace Line?

The Wallace Line is an imaginary boundary that runs between Australia and the Asian islands and the mainland. This boundary marks the point where there is a difference in species on either side of the line.

What did Wallace find on Lombok which was a surprise to him?

But then, “crossing over to Lombok, separated from Bali by a strait less than twenty miles wide, I naturally expected to meet with some of these birds again; but during a stay there of three months I never saw one of them.” Instead, Wallace found a completely different assortment: white cockatoos, three species of

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What did Wallaces line which is located between Bali and Lombok illustrate?

Instead, the forests of Lombok echoed with the loud strangled screams of Australian cockatoos, and honey-eaters flitted through the trees. Wallace’s explanation was that he believed ‘the western part to be a separated portion of continental Asia, the eastern the fragmentary prolongation of a former pacific continent. ‘

Why do many species not cross the Wallace Line?

It can reasonably be concluded it was an ocean barrier preventing species migration because the physical aspects of the separated islands are very similar. Species found only on the Asian side include tigers and rhinoceroses, while marsupials and monotremes are only found on the eastern side of the Line.

What did Wallaces line illustrate?

Wallace’s Line separates an Asian fauna which includes primates, carnivores, elephants, and ungulates from the marsupial fauna of Australia and New Guinea.

What did Darwin and Wallace disagree on?

Darwin argued that human evolution could be explained by natural selection, with sexual selection as a significant supplementary principle. Wallace always had doubts about sexual selection, and ultimately concluded that natural selection alone was insufficient to account for a set of uniquely human characteristics.

What is the significance of the Wallace Line quizlet?

Significance of Wallace line? -It divides two geographic regions that Wallace realized had quite different biota. -a deep-sea trench has kept Asia and Australia separated. -Climate is defined as the prevailing long-term weather conditions in a particular region.

Why is Wallace’s Line significant in biogeography quizlet?

Why is Wallace’s line significant in biogeography? Because Wallace’s line divides two very distinctive faunas that are geographically very close together.

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What was the greatest scientific mystery of Wallace’s time?

His hard-earned records of which animals live where in South America are also lost. These notes contain clues to the question that Wallace risked so much to answer. It was the greatest scientific mystery of his time: where do species come from? But now Wallace’s thoughts must turn to a more urgent concern.

Why is it called Malay Archipelago?

The name was taken from the 19th-century European concept of a Malay race, later based on the distribution of Austronesian languages. Situated between the Indian and Pacific Oceans, the archipelago of over 25,000 islands and islets is the largest archipelago by area and fourth by number of islands in the world.

How did Wallace pay for his explorations?

They financed the trip by collecting specimens and selling them. After a short time exploring together, the two men split up in order to cover more ground. Wallace went north by river, collecting in areas previously unexplored by European naturalists.

What is lydekker line?

Lydekker’s line A line that defines the easternmost extension of oriental animals into the zone of mixing between the Oriental and Australian faunal regions. The corresponding western limit of the zone is known as Wallace’s line, and marks the maximum extent of marsupials (Marsupialia) in that direction.

How is the Wallace Line related to evolution?

Wallace had already accepted evolution when he began his travels in 1848 through the Amazon and Southeast Asia. The patterns he found were compelling evidence for evolution. He was struck, for example, by how rivers and mountain ranges marked the boundaries of many species’ ranges.

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What does biogeography mean?

Biogeography is defined as the study of the distribution of animals and plants in space and time and is widely used to characterise the different biomes on Earth.