Average diet composition (mean prey group mg fish-1 weighted by total estimated abundance per station), in percentages, for mackerel, herring and blue whiting, per year (i.e., from 2005 to 2010) and season (i.e., May and July).
Stations included in this analysis were those within the Atlantic water mass and with spatial overlap between ≥2 predator species (‘Dataset2’, Table 1). Prey group categorisation was simplified into 13 groups (see section 2.5). Nst and Nf are the number of stations and fish samples, respectively. The detailed diet characterization corresponding to each case (i.e. based on 45 prey group categorisations) is presented in Table A.1. Empty stomachs were excluded from this analysis.