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Related Experiment Video

Updated: Apr 15, 2026

Daily Transfers, Archiving Populations, and Measuring Fitness in the Long-Term Evolution Experiment with Escherichia coli
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Experimental evolution gone wild.

M Scheinin1, U Riebesell2, T A Rynearson3

  • 1GEOMAR Helmholtz Centre for Ocean Research Kiel, Düsternbrooker Weg 20, Kiel, Germany Tvärminne Zoological Station, University of Helsinki, J. A. Palménin tie 260, Hanko, Finland.

Journal of the Royal Society, Interface
|April 3, 2015
PubMed
Summary
This summary is machine-generated.

Marine diatoms rapidly evolved in response to elevated carbon dioxide (CO2) levels. This study demonstrates in situ experimental evolution to understand microbial adaptation to global change.

Keywords:
Skeletonemacarbon dioxidediatom evolutionexperimental evolutionin situ mesocosmsocean acidification

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Area of Science:

  • Marine microbial ecology
  • Evolutionary biology
  • Oceanography

Background:

  • Marine microbes, like diatoms, possess high evolutionary potential due to large populations and rapid division rates.
  • They are crucial in biogeochemical cycles and can adapt to environmental changes such as ocean acidification.

Purpose of the Study:

  • To measure the evolutionary response of the marine diatom Skeletonema marinoi to CO2 enrichment.
  • To pioneer the use of in situ mesocosms for experimental evolution studies in marine microbial communities.

Main Methods:

  • Experimental evolution of Skeletonema marinoi within CO2-enriched mesocosms deployed in situ.
  • Monitoring population growth rates of evolved diatom lineages under elevated CO2 conditions.

Main Results:

  • A significant evolutionary increase in population growth rate (1.3-fold) was observed in Skeletonema marinoi lineages evolved under high CO2.
  • This indicates a substantial adaptive evolutionary response to increased CO2 levels.

Conclusions:

  • In situ experimental evolution in mesocosms is a viable approach to study marine microbial adaptation.
  • Marine diatoms can rapidly evolve in response to global change, highlighting the dynamic nature of marine ecosystems.