Estimates of individual life-history traits
Based on the pedigree, we used the number of recruits produced by each individual in each year to calculate all the elements of individual projection matrices and derive some key life-history traits, such as individual expected growth rate and generation time (McGraw & Caswell 1996). To calculate an individual’s generation time, it must have produced a recruit. Thus, only individuals that produced at least one recruit during their lifetime were considered in these analyses of individual life-histories, resulting in a total of 1052 individuals (552 females and 500 males, see Table S1 for more details). From the individual projection matrix, we estimated individual generation time, measured as the weighted mean age at reproduction. As well as the expected individual growth rate, estimated as the dominant eigen value of the individual projection matrix (see Appendix for formulas). We also estimated the first age when an individual produced a recruit (first age), its lifespan, the average number of recruits per year (reproductive rate) and the total number of recruits produced during its life (lifetime reproductive success).