Fig. 3

Number of barnacles recruits after a 5 (i.e., March 2006) and b 12 months (i.e., October 2006) of experiments starting. In March 2006 barnacles were almost only present in the exclusions of the lower high intertidal and hence no statistical analysis could be performed. In October 2006, the number of barnacles was higher in the lower than in the upper high intertidal zone, but no differences among treatment were found (two-way ANOVA on sin transformed data). Different letters indicate differences among heights at P < 0.01. White squares: lower zone; gray squares: upper zone; C controls, EC experimental controls, E exclusions. Rectangles represent 25th and 75th percentiles, bars are 1st and 99th percentiles, and squares within rectangles are the median