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Ecosystem: Term introduced by ecological botanist Sir Arthur George Tansley (1871-1955) in 1935 to include. "... the whole system... including not only the organism-complex, but also the whole complex of physical factors forming what we call the environment...". He meant it to be the basic unit of ecology. To some, ecosystems are individuals with strong emergent properties. A. G. Tansley. The Use and Abuse of Vegetational Concepts and erms//Ecology, Vol. 16, No. 3. (Jul., 1935), pp. 284-307 http://eesc.columbia.edu/courses/ees/life/lectures/lect02.html
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