Comparison of the spawner abundance estimated by ABC models for the different sampling schemes studied, each sampling scheme being repeated several times. Each point corresponds to one of the 100 values provided by the model to calculate the estimate as a distribution, presented here as a boxplot. The horizontal red line corresponds to the estimate obtained with a daily sampling scheme. For all sampling schemes (except the daily nest count and the "every other day" scheme which only has two possibilities) we calculated seven summary statistic sets corresponding to all the different possibilities of field campaigns (count every other week and weekly count with a fixed 7 days step) for non-random sampling schemes. For random ones, we kept the same number of sets (seven) even if they have many more possible combinations, in order to be consistent across the sampling schemes. Coloured boxes correspond to the range of spawner's abundance estimated within each sampling scheme and allow to visualize the interval between the lowest and highest estimate.