Fig. 2
Seasonal patterns of daily mean air temperature and daily total precipitation (a), daily total sap flux (F H2O) (b), and mean dissolved [CO2 *] in sap solution at stem base ([CO2 *]base) (c) in a coppiced Quercus pyrenaica stand measured during the growing season in 2012 in two large and two small clones. Daily total sap flux and [CO2 *]base are the mean of four sampled stems per clone (three stems in clone SMALL1). Vertical dashed line on DOY 145 shows the first day on which substantial F H2O was observed. Beginning on this day, daily F H2O and [CO2 *]base were considered for comparison among clonal sizes