The Wallace Line and Evolution of the Species

Now known as the Wallace Line, it is the western edge of a transitional region between Asian and Australian eco-regions. When paired with the Weber Line to the east of Timor (named after the Dutch scientist Max Carl Wilhelm Weber), a region of surprising biodiversity patterns emerges, known as Wallacea.

The patterns of animal species can be clarified by studying the geological history of the region. Looking at a map of water depths, it is clear that the Wallacean islands are situated in, but separate from, the two continents. Dominated by the island of Sulawesi and including Flores, Lombok, Timor and many others, Wallacea’s dry land is surrounded by deep water.

By realizing this Alfred was further convinced of his theory of natural selection and its contributions to the theory of evolution. His theory on Natural Selection mentions the process whereby organism’s that are better adapted to their environment tend to survive and produce more offspring. This is because Natural selection acts on the phenotype (the characteristic of the organism which actually interacts with the environment) which is the key process in the evolution of a population.

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