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Alfred Russel Wallace (8 January 1823 – 7 November 1913) was an English [1] [2] [3] naturalist, explorer, geographer, anthropologist, biologist and illustrator. [4] He independently conceived the theory of evolution through natural selection; his 1858 paper on the subject was published that year alongside extracts from Charles Darwin's earlier writings on the topic.
After turning his attention to biology and completing eight years of work on barnacles, Darwin intensified work on his theory of species in 1854. Alfred Russel Wallace, a naturalist working in Borneo, had a paper on the "introduction" of species published in Annals and Magazine of Natural History. This made guarded comments about evolution, and ...
Human capital is the value that the employees of a business provide through the application of skills, know-how and expertise. [43] It is an organization's combined human capability for solving business problems. Human capital is inherent in people and cannot be owned by an organization.
In addition, Alfred Wallace independently used the concept of the struggle for existence to help come to the same theory of evolution. [3] Later, T.H. Huxley further developed the idea of the struggle for existence. Huxley did not fully agree with Darwin on natural selection, but he did agree that there was a struggle for existence in nature. [4]
The Malay Archipelago is a book by the English naturalist Alfred Russel Wallace which chronicles his scientific exploration, during the eight-year period 1854 to 1862, of the southern portion of the Malay Archipelago including Malaysia, Singapore, the islands of Indonesia, then known as the Dutch East Indies, and the island of New Guinea.
Darwinists such as Alfred Russel Wallace and Edward Bagnall Poulton, and in the 20th century Hugh Cott and Bernard Kettlewell, sought evidence that natural selection was taking place. Wallace noted that snow camouflage, especially plumage and pelage that changed with the seasons, suggested an obvious explanation as an adaptation for concealment.
As proposed by Alfred Russel Wallace, known as the father of zoogeography, phylogenetic affinities can be quantified among zoogeographic regions, further elucidating the phenomena surrounding geographic distributions of organisms and explaining evolutionary relationships of taxa.
1858: Theory of evolution by natural selection – Charles Darwin (discovery about 1840), Alfred Russel Wallace (discovery about 1857–58) – papers published concurrently, 1858. 1862: 109P/Swift–Tuttle , the comet generating the Perseid meteor shower , was independently discovered by Lewis Swift on 16 July 1862, and by Horace Parnell ...