Figure 7. Biomass accounted for by each feeding guild in 200 m depth bands, as a percentage of the biomass accounted for by species for which morphological data were known.

‘Benthic’ refers to species feeding in the benthic environment. If they could be assigned specifically to high or low trophic levels (see Methods for details) then they are listed as ‘Benthic–high’ or ‘Benthic–low’ accordingly. Species that feed on benthic suspension feeders exhibit a distinct isotope signature so are presented as ‘Benthic–suspension.’ ‘Pelagic’ refers to species feeding in the pelagic environment and ‘Pelagic–high’ represents those that could be distinguished as high trophic level.