About the Authors

Ulrich Sommer

usommer@geomar.de

Affiliation Marine Ecology, GEOMAR Helmholtz Centre of Ocean Research Kiel, Kiel, Germany

Carolin Paul

Affiliation Marine Ecology, GEOMAR Helmholtz Centre of Ocean Research Kiel, Kiel, Germany

Maria Moustaka-Gouni

Affiliation School of Biology, Aristotle University of Thessaloniki, Thessaloniki, Greece

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: US CP MMG. Performed the experiments: CP US. Analyzed the data: US MMG CP. Contributed reagents/materials/analysis tools: US CP MMG. Wrote the paper: US CP MMG.