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Ocean acidification is predicted to impact ecosystems reliant on calcifying organisms, potentially reducing the socioeconomic benefits these habitats provide. Here we investigate the acclimation potential of stony corals living along a pH gradient caused by a Mediterranean CO 2 vent that serves as a natural long-term experimental setting. We show that in response to reduced skeletal mineralization at lower pH, corals increase their skeletal macroporosity (features> 10 μm) in order to maintain constant linear extension rate, an important criterion for reproductive output. At the nanoscale, the coral skeleton’s structural features are not altered. However, higher skeletal porosity, and reduced bulk density and stiffness may contribute to reduce population density and increase damage susceptibility under low pH conditions. Based on these observations, the almost universally employed measure of coral biomineralization …
Nature Publishing Group
Publication date: 
17 Jul 2015

Paola Fantazzini, Stefano Mengoli, Luca Pasquini, Villiam Bortolotti, Leonardo Brizi, Manuel Mariani, Matteo Di Giosia, Simona Fermani, Bruno Capaccioni, Erik Caroselli, Fiorella Prada, Francesco Zaccanti, Oren Levy, Zvy Dubinsky, Jaap A Kaandorp, Pirom Konglerd, Jörg U Hammel, Yannicke Dauphin, Jean-Pierre Cuif, James C Weaver, Katharina E Fabricius, Wolfgang Wagermaier, Peter Fratzl, Giuseppe Falini, Stefano Goffredo

Biblio References: 
Volume: 6 Pages: 7785
Nature communications