Fig. 1
From: Does galvanic cathodic protection by aluminum anodes impact marine organisms?
Average growth rate of P. tricornutum during limit testing of aluminum and the aluminum anode. Diatoms were exposed for 72 h to maximum soluble metal concentrations (n = 3, error bars indicate SE) under natural seawater pH conditions. Significantly different means are marked with different letters (two-tailed unpaired t-test, p < 0.05)