Article ID: CBB001214554

From Formation to Ecosystem: Tansley's Response to Clements' Climax (2014)

unapi

Arthur G. Tansley never accepted Frederic E. Clements' view that succession is a developmental process whose final stage, the climax formation, is determined primarily by regional climate and that all other types of vegetation are some kind of successional stage or arrested successional stage. Tansley was convinced that in a given region a variety of environmental factors could produce different kinds of climax formations. At the heart of their dispute was Clements' organicist view of succession, i.e., the formation was a complex organism with an ontogeny and phylogeny. As early as 1905, Tansley offered an alternative to Clements' complex organism, the quasi-organism, but Clements in private and public rejected this compromise. Tansley and other plant ecologists continued to criticize Clements' theories for the next 20 years, but with no impact on Clements. John Phillips, a South African plant ecologist who was a follower of Clements, published a series of papers in 1934 and 1935 defending Clementsian ecology. These papers were triggered by the publication of a letter by another ecologist working in Africa who claimed that there was a strong correlation between soils and various kinds of climax vegetation, which was contrary to what was predicted by Phillips and Clements. In 1935, Tansley published an attack on Phillips and Clements and their developmental theory of succession. In it, he proposed the concept of the ecosystem as a way to get around Clements' monoclimax theory by making the physical environment (e.g., soil chemistry, soil texture, soil moisture) as important a factor as climate, plants and other organisms in determining the composition and characteristics of ecological entities, i.e., ecosystems. Tansley's ecosystem concept quickly replaced Clements' monoclimax theory as a dominant paradigm in ecology.

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Authors & Contributors
Shaul Bassi
Cristina Baldacci
Dussault, Antoine C.
Lucio De Capitani
Kenneth W. Noe
Death, Carl
Journals
Studies in History and Philosophy of Science Part C: Studies in History and Philosophy of Biological and Biomedical Sciences
Journal of the History of Biology
Water Policy: Official Journal of the World Water Council
Science, Technology and Human Values
History and Philosophy of the Life Sciences
Historical Studies in the Physical and Biological Sciences
Publishers
Wiley-Blackwell
Wetlands
Trent University (Canada)
Yale University Press
University of Georgia Press
University of Chicago Press
Concepts
Biological diversity; biodiversity
Ecology
Environmental sciences
Ecosystem
Environment
Biology
People
Clements, Frederic Edward
Tansley, Arthur George
Gleason, Henry Allan
Odum, Eugene P.
Huxley, Julian Sorell
Stopes, Marie Carmichael
Time Periods
20th century, early
19th century
21st century
20th century
Ancient
20th century, late
Places
United States
France
Mediterranean region
Indonesia
Pacific Ocean
Turkey
Institutions
British Ecological Society
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