Fig. 2

Change in species (a) δ¹³C, (b) basal area increments (BAI) between drought and non-drought years, and (c) difference in BAI one year post drought and non-drought conditions. Species names are abbreviated using the first three letters of the genus and species name (see Table 1 for full species names). Circles are broadleaved species, while triangles represent conifers. Filled symbols indicate differences that are significantly different from zero, with error bars corresponding to 95% confidence intervals. Note that in panel (a) Quercus ilex was not targeted for isotope analysis in Spain due to difficulties in distinguishing between earlywood and latewood. In panel (c) species from Spain are not shown because for this site the year post-drought coincided with the year that was selected as the non-drought control (see Table 1 for details)