Size distribution of lineages
The parameter Pareto \(\beta\) describes the slope of the power-law inverse cumulative distribution of the size of lineages (Arnaud-Haond et al., 2007):
\begin{equation} N_{\geq X}=a.X^{-\beta}\nonumber \\ \end{equation}
where \(N_{\geq X}\) is the number of sampled ramets belonging to genets containing X or more ramets in the sample of the population studied, and the parameters a and β are fitted by regression analysis.
Genetic variance apportionment
The Wright (1921, 1969) inbreeding coefficientF IS accounts for intra-individual genetic variation as a departure from Hardy-Weinberg assumptions of the genotyped populations. We computed one F IS value per population and per locus as\(F_{\text{IS}_{l}}=\frac{Q_{w,l}-Q_{b,l}}{1-Q_{b,l}}\), where\(Q_{w,l}\) is the population probability that two homologous alleles taken within individuals are identical at locus l , and\(Q_{b,l}\) is the population probability that two homologous alleles taken between different individuals are identical at locus l . We computed the first four moments of the empiricalF IS distribution obtained from the 10000 independent F IS values per scenario (100 independent loci x 100 replicated simulations), respectively noted\(\text{Mean}\left[F_{\text{IS}}\right],Var\left[F_{\text{IS}}\right],Skew\left[F_{\text{IS}}\right]\ \)and\(\text{Kurt}\left[F_{\text{IS}}\right]\).