Results of the Principal Component Analyses, with the first and second principal component (PC1 and PC2).

<p>The first column shows the dependencies between variable – (A and C) (for detailed values see Tab. S4 in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0075439#pone.0075439.s001" target="_blank">File S1</a>) the second column shows temporal trend PC1 and PC2 axis scores (B and D). Rows show the results of analyses of data sets including: model forcing (A and B), and modeled biomass (C and D), respectively. Vertical lines on PC components time trajectory represents shifts tested by the regime shift analysis. Please note that the scale differs between axes.