Enhanced interannual drought resilience in mixed stands: unveiling spatio-temporal complementarity in tree species of the Spanish Northern Plateau

YEAR: calendar yearTREE: number of the sampled treePLOT: number of sample plot (1,3,4,5,6,7). There is no plot nr 2.TYPE: type of the stand composition (MIXED, PURE).CENTER: number of the center of the sample plot, in cases, when the plot was subdivided into subplots. SP: species to which TREE belongs (Jt - Juniperus thurifera; Pp - Pinus pinea; Pt - Pinus pinaster; Qi - Quercus ilex)DBH: diameter of the tree measured at breast height (1.3m) [cm]. For the years before 2021, the DBH were reconstructed, as described in the Article. BA.cm2: Basal Area of the given tree, calculated as (pi * DBH^2)/4 [cm^2].BAI.t: increment of the basal area of a given tree in a given year [cm^2 / year].HEIGHT_2021: height of a given tree measured at the end of the year 2021 [m]. CORED: if increment cores were extracted from a tree (T, NA).DENDROM: if a band dendrometer (T) and continous (automated) dendrometer (T*) were installed on a tree. X.SW: coordinate on x-axis on a carthesian plane; the x = 0 lies on the SW edge of the sample plot [m]. Y.SW: coordinate on y-axis on a carthesian plane; the y = 0 lies on the SW edge of the sample plot [m].R.infl: radius of influence of a given tree, calculated as DBH/100 * 30 [m].ZAi: Zone Area; area of influence of a given tree, calculated as pi * R.infl^2 [m^2].HGCI: sum of competition suffered by a given tree from all its identified neighbours; the competititon between the subject tree and every neighbour was calculated using the Hegyi Competition Index.Jt: competition suffered by a given tree from all Jt neighbours. Qi: competition suffered by a given tree from all Qi neighbours. Pp: competition suffered by a given tree from all Pp neighbours. Pt: competition suffered by a given tree from all Pt neighbours. CIinter: competition suffered by a given tree from all heterospecific neighbours. CIintra: competition suffered by a given tree from all conspecific neighbours. Pre.yr.mm: sum of precipitation during given year [mm].Pre.gs.mm: sum of precipitation during the growing season of a given year (months with Tavg_month >= 8gr.C) [mm].Pre.yr.mm: sum of precipitation during the hydrological season of a given year (October previous year - September current year) [mm].CWB.pm.mm: climatic water balance, calculated as Pre.yr.mm - PET(Penman-Monteith) [mm].CWB.hr.mm: climatic water balance, calculated as Pre.yr.mm - PET(Hargreaves) [mm].CWB.th.mm: climatic water balance, calculated as Pre.yr.mm - PET(Thornthwaite) [mm].DMI: De Martonne Index. resist: resistance to drought, calculated over ring width indices (reference period = 3 years). Formula as described in Lloret et al. 2010.recov: recovery from drought, calculated over ring width indices (reference period = 3 years). Formula as described in Lloret et al. 2010.resil: resilience to drought, calculated over ring width indices (reference period = 3 years). Formula as described in Lloret et al. 2010.rel.resil: relative resilience to drought, calculated over ring width indices (reference period = 3 years). Formula as described in Lloret et al. 2010.rec.period: growth recovery time, as in Thurm et al. 2016.