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1 May 2009 Ecological Facilitation May Drive Major Evolutionary Transitions
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Abstract

There is a growing consensus among ecologists that ecological facilitation comprises a historically overlooked but crucial suite of biotic interactions. Awareness of such positive interactions has recently led to substantial modifications in ecological theory. In this article we suggest how facilitation may be included in evolutionary theory. Natural selection based on competition provides a conceptually complete paradigm for speciation, but not for major evolutionary transitions—the emergence of new and more complex biological structures such as cells, organisms, and eusocial populations. We find that the successful theories developed to solve these specific problematic transitions show a consistent pattern: they focus on positive interactions. We argue that facilitation between individuals at different levels of biological organization can act as a cohesive force that generates a new level of organization with higher complexity and thus allows for major evolutionary transitions at all levels of biological hierarchy.

© 2009 by American Institute of Biological Sciences. All rights reserved. Request permission to photocopy or reproduce article content at the University of California Press's Rights and Permissions Web site at www.ucpressjournals.com/reprintinfo.asp.
Zaal Kikvidze and Ragan M. Callaway "Ecological Facilitation May Drive Major Evolutionary Transitions," BioScience 59(5), (1 May 2009). https://doi.org/10.1525/bio.2009.59.5.7
Published: 1 May 2009
JOURNAL ARTICLE
6 PAGES

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