Competition–colonization dynamics in experimental bacterial metacommunities

George Livingston (), Miguel Matias, Vincent Calcagno, Claire Barbera, Marine Combe, Mathew A. Leibold and Nicolas Mouquet
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George Livingston: Institut des Sciences de l’Evolution – CNRS UMR 5554 - Université de Montpellier II
Miguel Matias: Institut des Sciences de l’Evolution – CNRS UMR 5554 - Université de Montpellier II
Vincent Calcagno: INRA Sophia-Antipolis 400 Route des Chappes
Claire Barbera: Institut des Sciences de l’Evolution – CNRS UMR 5554 - Université de Montpellier II
Marine Combe: Institut des Sciences de l’Evolution – CNRS UMR 5554 - Université de Montpellier II
Nicolas Mouquet: Institut des Sciences de l’Evolution – CNRS UMR 5554 - Université de Montpellier II

Nature Communications, 2012, vol. 3, issue 1, 1-8

Abstract: Abstract One of the simplest hypotheses used to explain species coexistence is the competition–colonization trade-off, that is, species can stably coexist in a landscape if they show a trade-off between competitive and colonization abilities. Despite extensive theory, the dynamics predicted to result from competition–colonization trade-offs are largely untested. Landscape change, such as habitat destruction, is thought to greatly influence coexistence under competition–colonization dynamics, although there is no formal test of this prediction. Here we present the first illustration of competition–colonization dynamics that fully transposes theory into a controlled experimental metacommunity of two Pseudomonas bacterial strains. The competition–colonization dynamics were achieved by directly manipulating trade-off strength and colonization rates to generate the full range of coexistence conditions and responses to habitat destruction. Our study successfully generates competition–colonization dynamics matching theoretical predictions, and our results further reveal a negative relationship between diversity and productivity when scaling up to entire metacommunities.

Date: 2012
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DOI: 10.1038/ncomms2239

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