Phase 2. Estimation of survival rate
Approximately 50 reared recruits and 50 wild recruits will be placed in separate plots of rocky bottom cover by algae (25m2 of surface approximatively in relation with natural density). Each plot will be closed on the edges to prevent sea urchins to leave. The survival rate of both groups will be estimated differentiating the causes of death (e.g. physiological causes or predation). In addition, we will estimate the grazing activity of the two groups by assessing the algal cover before and after the reseeding.





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