Estimates of spatial variance at each sea urchin life stage.

Components of variance for MS estimates and variances associated to each source of variation for larvae: s = 4, z = 2, n = 12; for settlers: s = 4, z = 2, n = 3; and for recruits and adults: s = 4, z = 2, n = 20. P = Posidonia oceanica seagrass meadows and R = rocky macroalgal habitats. Larvae data have not habitat associated to habitat because they were collected in the water column.