10/10/2023 0 Comments Alfred russel wallace![]() The surviving evidence reveals well over 100 men worked for Wallace during his voyage. In John van Wyhe (2015), sourced from Gould (1869) Wallace’s Standard Wing (Semioptera wallacii), discovered by Ali. The specimens include insects, birds, reptiles, mammals and shells from Singapore, Sarawak in Borneo, Bali, Lombok, Makassar in Sulawesi, Maluku Islands, Papua, Java and Sumatra. Wallace and teams of assistants procured 125,660 natural history specimens between 18. Wallace’s expedition resulted in The Malay Archipelago, one of the classic tales from the history of science. Wallace described Ali, about 15 year old, as “attentive and clean, and could cook very well”.Įxploring the jungles, rivers and mountains, walking and boating for eight years, Wallace was helped by a team of guides, cooks, boat crew, porters and bird shooters and skinners. One of Wallace’s trusted assistants was Ali, a Malay teenager from Sarawak Borneo, or today Malaysia. The works of British naturalist Alfred Russel Wallace in Southeast Asia in the 19th century cannot be separated from the role of a local resident. ![]() This is the second article of the series. He died in 1913 at the age of 90.To mark Wallacea Week, a series of public lectures and exhibition on the Wallacea region of Indonesia, The Conversation presents a series of analysis on biodiversity and history of science in Indonesia. Wallace wrote over 20 books and published more than 700 articles and letters on a wide variety of topics. Several mammal, bird, and fish species are found in abundance on one side of the line and only in small numbers, or not at all, on the other side. ![]() It signifies the unexpected distribution of animals on either side of the line. Wallace’s Line, as it was later named, runs from the Indian Ocean to the Philippine Sea. His research on the geographic distribution of animals provided critical support for his evolutionary theories and led him to draw a boundary line through Southeast Asia that divides Asian and Australian animal groups. During that time, he gathered over 125,000 specimens. Wallace spent eight years studying and collecting biological specimens in Southeast Asia. Though Wallace’s contributions to the study of evolution were considerable, they are often forgotten. The theory of evolution by natural selection became known as Darwin’s theory. In 1859, Darwin published his book On the Origin of Species, which presented his theory of natural selection to a broader audience. The two collaborated on a scientific paper, discussing their evidence for natural selection and evolution. In 1858, he sent Darwin a letter outlining his ideas about evolution. Wallace knew Darwin was working on similar research. Wracked with a fever, he suffered hallucinations, but when the fever broke, the answer came to him-species evolve by adapting to their environment! Then, in 1858, while still in Southeast Asia, he became ill again. However, he could not explain how or why they evolve. By 1855, his observations led him to the conclusion that living things change over long periods of time-they evolve. Wallace’s team and the ship’s crew spent 10 days adrift before being picked up by a passing ship, and all of Wallace’s notes and samples were lost at sea.ĭespite this setback, Wallace set off on another voyage in 1854 to Southeast Asia to collect more samples. But 26 days into their voyage home, his ship caught fire and sank in the Atlantic. After four years in Brazil, Wallace fell ill and decided to return home to England. He traveled to Brazil and various islands of the Malay Archipelago that make up modern-day Indonesia and the Philippines, where he collected thousands of specimens of insects, birds, and other animals. Like fellow naturalist and colleague Charles Darwin, Wallace traveled the world, observing and collecting samples of species. However, what he is best known for is his work on the theory of natural selection. He even weighed in on the debate as to whether or not life could exist on Mars. He has been described variously as a naturalist, a geographer, and a social critic. Alfred Russel Wallace was born in Wales in 1823.
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