Age-depth model for the Wishart Lake sediment record.

<p>The model was developed using a linear regression model fit to calibrated radiocarbon dates, recent chronological data points derived from the <i>Ambrosia</i> pollen rise (depth 40 cm) and activity of ²¹⁰Pb (lower boundary used, depth 50 cm). Radiocarbon dates (the five lowermost points) are shown with histograms corresponding to the probability distribution of calibrated dates [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0159937#pone.0159937.ref053" target="_blank">53</a>]. Figure generated using <i>clam</i> for R [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0159937#pone.0159937.ref053" target="_blank">53</a>].