<p>Basal area increments (means ± 1SE) are displayed as a function of tree age (A, C, E, G, I, K, M) and calendar year (B, D, F, H, J, L, N). See also the comparisons among tree species displayed in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0073855#pone-0073855-t003" target="_blank">Table 3</a>.</p