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From Formation to Ecosystem: Tansley's Response to Clements' Climax
1Department of Ecology, Evolution and Organismal Biology, Iowa State University, Ames, IA, 50011, USA, valk@iastate.edu.
Journal of the History of Biology
|July 19, 2013
Summary
Arthur Tansley challenged Frederic Clements' climax theory, proposing the ecosystem concept. This new ecological paradigm integrated physical environment factors, replacing Clements' monoclimax theory.
Area of Science:
- Ecology
- Plant Ecology
- Environmental Science
Background:
- Frederic E. Clements proposed a monoclimax theory where regional climate determines the final vegetation stage (climax formation).
- Arthur G. Tansley disagreed, believing multiple environmental factors could create diverse climax formations.
- Clements viewed vegetation as an organic entity with a developmental history.
Purpose of the Study:
- To outline the historical debate between Tansley and Clements regarding ecological succession and climax vegetation.
- To introduce Tansley's ecosystem concept as an alternative to Clements' monoclimax theory.
- To explain how Tansley's concept broadened the understanding of ecological entities.
Main Methods:
- Historical analysis of ecological theories and publications.
- Examination of the intellectual dispute between Tansley and Clements.
- Review of Tansley's conceptualization of the ecosystem.
Main Results:
- Tansley's ecosystem concept was developed in response to Clements' monoclimax theory.
- The ecosystem concept incorporates physical environmental factors (soil, moisture) alongside climate and organisms.
- Tansley's ecosystem concept gained prominence, replacing Clements' monoclimax theory in ecology.
Conclusions:
- Tansley's ecosystem concept offered a more comprehensive view of ecological systems.
- The shift from monoclimax to ecosystem theory marked a significant paradigm change in ecology.
- This conceptual evolution highlighted the importance of integrating abiotic factors in ecological studies.
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