Fig. 8

Mytilus edulis. Relationships between intertidal height at each of the 15 sampling sites in dm below or above mean-tide level (MTL) and parameters of production and recruitment. a Long-term mean somatic production of soft parts in g AFDM m⁻² a⁻¹ with 1 SE (n = 26, the production in the years 1979–2004); numbers or letters indicate the different sampling sites (see Fig. 1). b Long-term mean density of recruits of the 26 cohorts born in 1979 to 2004 as observed in August at an age of ∼3 months (open symbols) and in March at an age of ∼10 months (solid symbols), in n m⁻² with 1 SE (n = 26). c Mean life-time production per March-recruit in g AFDM ind⁻¹ with 1 SE, as realised after the first (month of) March of their life (i.e., excluding the production at spat size). Points for transects 1, 2 and 3 (see Fig. 1) omitted, because of extremely low (on average < 0.1 m⁻²) recruit densities. Means of all cohorts born in the 1979–2002 period, thus n = 24 or less (because of cohorts with 0-recruit numbers at the site in March); numbers indicate numbers of observations