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1 results

  • 7 - Qualitative Emergence from Quantitative Changes

  • John Vandermeer, University of Michigan, Ann Arbor, Ivette Perfecto, University of Michigan, Ann Arbor
  • Book:
    The Dialectical Agroecologist
    Published online:
    31 October 2024
    Print publication:
    14 November 2024, pp 135-152

  • Summary

    In this chapter we use the historical example of the coffee leaf rust pathogen to illustrate various issues of agroecology, emphasizing the ecological concepts of critical transitions, hysteresis, and ecological regime change – an example from basic ecology of the dialectical principle of transition from the quantitative to the qualitative. Beginning with the plantation system and its social and ecological importance, we review the basic ecology of the coffee rust disease and show how the sociopolitical arrangement of the plantation system interpenetrates the biological realities of the pathogen to create conditions for the critical transition.