Table S1 Null allele frequencies and heterozygote deficiency (FIS) per cohort and microsatellite locus. Null allele frequencies were estimated (i) with the indirect method of Kalinowski & Taper (2006) for adult and seedling cohorts, (ii) by direct counting in maternal progeny arrays for seeds (Oddou-Muratorio et al. 2009) or (iii) together with mating system and dispersal parameters using adult-seedlings data in the frame of the seedlings SEMM developed by Chybibki et Burczyk (2010). FIS were estimated following Weir & Cockerham (1984). Microsatellite markers were originally developed by (i) Tanaka et al. (1999), (ii) Pastorelli et al. (2003) and (iii) Asuka et al. (2004).

Table S2 Nested analysis of molecular variation for genetic variation among four beech seedling temporal cohorts, sub-sampled in three spatial plots. 234 seedlings were used for these analyses.

Table S3 Estimation of genetic differentiation among seedling plots and adult not using (No) and using (ENA) the ENA correction for null alleles as described in Chapuis & Estoup (2007).

Table S4 Estimates of between-generation SGS for each seedlings plot: average kinship coefficient between adult-seedling pairs separated by less than 10 m (F1), slope of the regression of pairwise kinship against logarithm of distance with 95% confidence interval (CI).

Appendix S1 AMOVA design.

Appendix S2 Estimation of the seed and pollen dispersal kernel using spatially explicit mating model (SEMM) for established seedlings.

Appendix S3 Estimation of the pollen dispersal kernel using SEMM for maternal progeny arrays.

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