Erratum to: Mar Biol (2013) 160:2103–2112 DOI 10.1007/s00227-012-2090-7

Unfortunately, Fig. 4 was incorrectly published in both online and print version of the article. The corrected figure is given below.

Fig. 4
figure 4

Skeletal mMg/Ca in new structures formed by Corallina elongata in the control treatment (pCO2 of 380 µatm; N = 7) and in the elevated pCO2 treatments (550, 750 and 1,000 µatm; N = 9)