Sediment characterisation at different sites.

<p>A – particle size (log-scaled), B – loss on ignition (250°C), C – loss on ignition (500°C), D – ratio between LOI500 and LOI250 (one outlier, ratio = 5.8 is not shown for reasons of clarity), E – carbonate content (%) and F - redox. Site codes (X-axis): C - Creran, E - Etive, L - Leven, S - Spelve followed by site number (1 or 2). Sample sizes (per site) are shown in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0045159#pone-0045159-t001" target="_blank"><b>Table 1</b></a>.