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. 2015 Oct 15;10(10):e0140394. doi: 10.1371/journal.pone.0140394

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© 2015 Roleda et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Fig 4 — (a) Chlorophyll a, and (b) Biogenic silica (both n = 6, ± SE) of (c) Benthic diatom assemblage in culture tanks. The pH treatments were the same as in Fig 2. a) and b) The main effects of pH and diurnal variation, as well as their interaction were not significantly different (ANOVA, P > 0.05).