*Correspondence: Sönke Hohn, Systems Ecology Group, Theoretical Ecology and Modelling, Leibniz Center for Tropical Marine Ecology, Fahrenheitstraße 6, 28359 Bremen, Germany e-mail: soenke.hohn@ zmt-bremen.de Ocean acidification due to rising atmospheric pCO2 slows down coral calcification and impedes reef formation, with deleterious consequences for the diversity of reef ecosystems. Such intera...